阅读说明：本技术 一种闭环式静电监测与消除系统 (Closed-loop static monitoring and eliminating system ) 是由 孙卫星 杨庆瑞 罗先军 李鹏 于 2019-10-21 设计创作，主要内容包括：一种闭环式静电监测与消除系统,属静电消除领域。其沿待消电产品的运行路线,在导轨上方,依次设置第一静电监测装置、第一静电消除装置、第二静电监测装置、第二静电消除装置和第三静电监测装置；第一静电监测装置监测待消电产品对象的初始静电压；第一静电消除装置对待消电产品对象进行首次静电消除；第二静电监测装置监测待消电产品对象的剩余静电压；第二静电消除装置对待消电产品对象进行再次静电消除；第三静电监测装置监测待消电产品对象的残余静电压。其通过在每个静电消除装置的前、后位置分别设定一个静电监测装置,采用闭环式反馈模式,自动对待消电产品对象进行静电监测和静电消除功能；亦可对静电消除装置的消电能力进行监测或评判。(A closed loop static monitoring and eliminating system belongs to the static eliminating field. The static electricity eliminating device is characterized in that a first static electricity monitoring device, a first static electricity eliminating device, a second static electricity monitoring device, a second static electricity eliminating device and a third static electricity monitoring device are sequentially arranged above a guide rail along the running route of a product to be eliminated; the first static monitoring device monitors the initial static voltage of a product object to be discharged; the first static elimination device is used for eliminating static of a product object to be eliminated for the first time; the second static monitoring device monitors the residual static voltage of the object of the product to be discharged; the second static elimination device is used for eliminating static of the product object to be eliminated again; the third static electricity monitoring device monitors the residual static voltage of the object of the electric product to be discharged. The static electricity monitoring and eliminating functions of a product object to be eliminated are automatically carried out by respectively setting a static electricity monitoring device at the front position and the rear position of each static electricity eliminating device and adopting a closed loop feedback mode; the power consumption of the static electricity eliminating device can be monitored or judged.)

1. A closed loop type static monitoring and eliminating system comprises a static eliminating device, a static monitoring device and a movable object of a product to be eliminated, which is positioned on a guide rail, and is characterized in that:

a first static electricity monitoring device, a first static electricity eliminating device, a second static electricity monitoring device, a second static electricity eliminating device and a third static electricity monitoring device are sequentially arranged above the guide rail along the running route and the running direction of a product object to be eliminated on the guide rail;

the first static monitoring device is used for monitoring the initial static voltage of a product object to be discharged;

the first static elimination device is used for eliminating static of a product object to be eliminated for the first time;

the second static monitoring device is used for monitoring the residual static voltage of the product object to be discharged;

the second static elimination device is used for eliminating static of the product object to be eliminated again;

the third static monitoring device is used for monitoring the residual static voltage of the product object to be discharged;

the first static monitoring device and the first static eliminating device are arranged in a correlated mode, and linkage control is achieved; the second static monitoring device and the second static eliminating device are arranged in a correlation mode, and linkage control is achieved;

when the to-be-destaticized product object moves along the guide rail, the to-be-destaticized product object sequentially passes through the first static monitoring device to the third static monitoring device, the first static monitoring device controls the first static destaticizing device to output a first destaticizing capacity corresponding to the initial static voltage according to the initial static voltage of the to-be-destaticized product object, and the first static destaticizing device performs first static destaticizing on the to-be-destaticized product object;

then the second static monitoring device monitors the residual static voltage of the product object to be discharged after the first static elimination, and if the residual static voltage of the product object to be discharged is lower than a preset threshold value, the second static elimination device is in standby; if the residual static voltage of the to-be-eliminated product object is higher than the preset threshold value, the second static monitoring device controls the second static eliminating device to output static eliminating capacity corresponding to the residual static voltage value according to the residual static voltage of the to-be-eliminated product object, and the second static eliminating device carries out static elimination on the to-be-eliminated product object again;

and finally, monitoring whether the residual static voltage of the to-be-discharged product object meets the process specification requirement or not by the third static monitoring device, if so, releasing the residual static voltage, and if not, outputting an alarm signal.

2. The closed loop static electricity monitoring and eliminating system as claimed in claim 1, wherein said first, second and third static electricity monitoring devices, said first and second static electricity eliminating devices, are each provided with an independent IP address;

the first, second and third static electricity monitoring devices and the first and second static electricity eliminating devices are respectively in communication connection with a control computer through a wired or wireless local area network.

3. The closed loop static electricity monitoring and eliminating system as claimed in claim 1, wherein the input terminals of said first, second and third static electricity monitoring devices are electrically connected to the output terminal of the integrated power supply, respectively, and are in communication connection with the control computer through the communication module in the integrated power supply;

and the power supply input ends of the first and second static elimination devices are respectively and correspondingly connected with the power supply output end of the integrated power supply.

4. The closed loop static electricity monitoring and eliminating system as claimed in claim 1, wherein said closed loop static electricity monitoring and eliminating system is configured to perform the static electricity monitoring and eliminating function for the object to be eliminated automatically by performing the linkage control of one static electricity sensing device and one static electricity eliminating device in a one-to-one correspondence manner in the closed loop feedback mode.

5. The closed-loop static electricity monitoring and eliminating system as claimed in claim 1, wherein the closed-loop static electricity monitoring and eliminating system employs at least two static electricity monitoring processes for the object to be eliminated, and controls the next static electricity eliminating capability according to the result of each static electricity monitoring process, so as to automatically eliminate the static electricity for the object to be eliminated for a plurality of times.

6. A static electricity monitoring and eliminating system demonstration apparatus operating on the closed loop static electricity monitoring and eliminating system principle of claim 1, characterized by:

the static monitoring and eliminating system demonstration device is also provided with a fourth static sensing device, a fifth static sensing device, a test flat plate which can move along the guide rail in a controlled manner, a high-voltage generator, a guide rail PLC controller and an integrated power supply;

the fourth static sensing device and the fifth static sensing device or the integrated power supply are respectively provided with independent IP addresses; the fourth and fifth static sensing devices or the integrated power supply are respectively connected with the control computer through a wired or wireless local area network;

the control computer is an industrial touch screen computer, and system monitoring software is installed in the industrial touch screen computer and used for displaying the working state of the equipment on line and monitoring the working conditions of each static sensing device and each static eliminating device;

the vertical installation heights of the fourth static sensing device and the fifth static sensing device from the test panel are different, so that the monitoring accuracy or the consistency of the static voltage values of the plurality of static sensors under the same static voltage can be verified under different monitoring distances on the premise that the static voltage values of the surface of the target object are the same;

the test flat plate is used for simulating a product object to be consumed, and can reciprocate along the guide rail and stay at a certain position of the guide rail or stay at a certain preset position for a preset time under the control of the PLC;

the high voltage generator is used for applying initial static voltage to the test flat plate which moves to the head end or the tail end of the guide rail; the initial static voltage comprises a positive voltage or a negative voltage;

the guide rail PLC controller is used for controlling the movement speed or the movement range of the test flat plate on the guide rail, enabling the test flat plate to move to a certain set position, and continuing to move to other set positions after the test flat plate is static at the set position for a preset time;

the integrated power supply is used for supplying power to each static sensing device and each static eliminating device, and simultaneously, the working state and the working parameters of each device are transmitted to system monitoring software in a control computer in real time through a wired or wireless network.

7. The static electricity monitoring and elimination system demonstration device according to claim 6 wherein the fourth and fifth static electricity sensing means are mounted at a vertical mounting height from the test plate which is not equal to the vertical mounting height of the first through third static electricity sensing means from the test plate.

8. The closed loop static monitoring and elimination system of claim 6, wherein said closed loop static monitoring and elimination system operates as follows:

a) the head and the tail ends of the guide rail are respectively provided with a positive high-voltage conductive plug and a negative high-voltage conductive plug, and the positive high-voltage conductive plug and the negative high-voltage conductive plug are respectively and correspondingly connected with a positive high-voltage output end and a negative high-voltage output end of a high-voltage power supply and are used for respectively applying positive voltage and negative voltage to the test flat plates moved to the head and the tail ends of the guide rail; meanwhile, a static monitoring device is respectively arranged above the head and tail end positions of the guide rail;

b) respectively setting a plurality of preset positions along the length direction of the guide rail, respectively setting two sets of static electricity elimination devices above two preset positions, and respectively setting a static electricity monitoring device above the front preset position and the rear preset position of each set of static electricity elimination device;

c) respectively arranging a static monitoring device above at least two adjacent preset positions in the length direction of the guide rail, wherein the two sets of static monitoring devices are different from the vertical installation height of the test flat plate;

d) establishing corresponding association relation for each static monitoring device and each static eliminating device through an IP address in system monitoring software; and the static monitoring devices positioned at the front and back positions of each set of static eliminating device and the corresponding static eliminating devices establish corresponding control association relations; the control association relationship at least comprises: along the moving direction of the test flat plate, the static monitoring output signal of the static monitoring device positioned in front of each static eliminating device is used for controlling the operation starting control of the static eliminating device positioned in the rear position of the static monitoring device;

e) the guide rail PLC controller controls the test flat plate to move; when the system monitoring software initially runs, the test flat plate is positioned at the first position of the head end of the guide rail, and the test flat plate is electrically contacted with the positive high-voltage output end of the high-voltage power supply, so that the test flat plate is positively charged;

the electrostatic sensor at the first position of the head end of the guide rail monitors the electrostatic voltage on the flat plate, transmits a monitoring signal to the industrial touch screen computer, and displays the electrostatic voltage monitored by the electrostatic sensor on monitoring software; if the monitored static voltage exceeds a set alarm threshold value, the first-end static sensor outputs a red alarm signal;

f) the guide rail PLC controller controls the test flat plate to move, each static sensing device arranged at the second position, the third position and the fourth position respectively monitors the static voltage on the test flat plate at the corresponding position and transmits a monitoring signal to the industrial touch screen computer, and if the static voltage monitored by the static sensor at a certain position exceeds a set alarm threshold value, the corresponding static sensor outputs a red alarm signal;

g) when the test panel moves to the fourth position, the static voltage monitored by the corresponding static sensing device exceeds a threshold value, an alarm signal is transmitted to the industrial touch screen computer, and linkage control exists between the static sensing device and the second static eliminating device, so that the industrial touch screen computer starts the second static eliminating device to work to eliminate static charges on the test panel;

h) when the test flat plate moves to the sixth position, because the second static eliminating device eliminates the static charge on the test flat plate, the static sensing device corresponding to the position cannot monitor the static charge on the flat plate or the static voltage value is lower than the set static threshold value;

i) when the test flat plate moves to the eighth position, the test flat plate is electrically contacted with the negative high-voltage output end of the high-voltage power supply, so that the test flat plate is charged with negative static electricity; the static sensing device corresponding to the position monitors that the test flat plate has negative static electricity and exceeds a set threshold value, so that an alarm signal is transmitted to the industrial touch screen computer, and the test flat plate makes return motion under the control of the guide rail PLC;

j) when the test panel with negative static electricity moves back to the seventh position, the corresponding static electricity sensing device monitors that the static voltage exceeds the threshold value at the previous position, the alarm signal is transmitted to the industrial touch screen computer, and the static electricity sensing device 6 and the second static electricity eliminating device are in linkage control, so that the monitoring system starts the ion fan to work to eliminate the negative charge on the test panel.

k) When the test panel is de-electrified by the ion fan and moves to a sixth position, the corresponding static sensing device monitors that the negative charges on the test panel are eliminated;

l) the test plate then passes through the fifth, fourth, third and second positions in sequence and after a set dwell time at each position, returns to the initial first position.

9. The closed loop electrostatic monitoring and elimination system or the electrostatic monitoring and elimination system demonstration device as claimed in claim 6, wherein the electrostatic monitoring and elimination system demonstration device monitors the electrostatic voltage of the test panel by installing at least two electrostatic monitoring devices with different vertical installation heights from the test panel on the moving path of the test panel, and judges and verifies the monitoring accuracy of a plurality of electrostatic monitoring devices under the same electrostatic voltage at a plurality of different monitoring distances by comparing the actual measurement values of the electrostatic monitoring devices;

the static monitoring and eliminating system demonstration device is characterized in that at least two sets of static eliminating devices are arranged on a moving path of the test flat plate, and the static eliminating effects of the static eliminating devices are compared to judge and verify the static eliminating performance of each static eliminating device or each set of static eliminating device;

the static monitoring and eliminating system demonstration device is used as a static monitoring and eliminating demonstration device and plays a role in technical demonstration.

10. The static electricity monitoring and eliminating system demonstration device according to claim 6, wherein the testing flat plate comprises an upper square stainless steel metal flat plate and a lower square stainless steel metal flat plate which have the same structure and size, the lower flat plate is installed and fixed on a sliding platform of the guide rail, and the upper flat plate and the lower flat plate are isolated by a polytetrafluoroethylene cylinder in an insulating way and are supported and fixed;

the bottom of the upper flat plate is respectively fixed with a conductive end at the front end and the rear end of the central line position of the motion direction of the test flat plate, and the conductive ends are of a hollow columnar structure and are used for contacting positive and negative high-voltage conductive plugs arranged at the head end and the tail end of the guide rail;

the positive and negative high-voltage conductive plugs are respectively arranged at the head and the tail ends of the guide rail and respectively and correspondingly electrically connected with the positive and negative high-voltage output ends of the high-voltage power supply.

Technical Field

The invention belongs to the field of static elimination, and particularly relates to an active static elimination system.

Background

With the continuous improvement of the production line on the requirements of electrostatic protection, the online electrostatic monitoring and instant elimination of products become more and more standard requirements.

For example, in a liquid crystal panel production line, there are cases where the same type (same structure size) of liquid crystal panel flows through various process operation devices, and in order to eliminate the static electricity of the liquid crystal panel on the production line in time, it is necessary to perform online static electricity monitoring and eliminate the static electricity in time for the product.

At present, there are several brands of static monitoring instruments in the market, such as handheld static voltage monitoring meters, static sensors, etc., which can be used for monitoring and feeding back the static charge on the surface of an object, and there are also many devices for eliminating the static charge on the surface of an object, such as various types of ion fans, ion bars, etc.

At present, networking technologies of computer local area networks are mature, various industrial personal computers, wireless communication modules, smart phones and the like have network connection capacity, and various wired or wireless local area network networks can be conveniently established in a mode of setting different IP addresses for various devices.

However, the existing apparatus for static electricity monitoring and the equipment for eliminating the static electricity on the surface of the object must be connected or transmitted with a special signal transmission line (usually a special coaxial shielding signal line) configured by the manufacturer. The method does not have a universal connection mode which is convenient for network connection and a unified and standard data exchange mode, and is very difficult to establish a static monitoring signal transmission system or a static monitoring-static eliminating system in a production field, and various signal lines and control cables in the field have huge laying workload and large one-time investment cost.

Meanwhile, based on the difference in the manufacturing process or the monitoring method, the monitoring effect of two existing static monitoring instruments or the static eliminating effect of static eliminating equipment on the surfaces of two objects can be compared only in equipment manufacturers, which is generally impossible in the production field, and this also brings great inconvenience to the use units of the static eliminating devices, and the monitoring effect or the eliminating effect of the static monitoring devices or the static eliminating devices on the site cannot be monitored or compared for users, and it is inconvenient for the use units to judge whether the functions of the installed static monitoring devices or the static eliminating devices are partially lost or the capability of the installed static monitoring devices or static eliminating devices is reduced in the production field.

Disclosure of Invention

The invention aims to provide a closed loop type static monitoring and eliminating system. Setting an independent IP address for each static monitoring device or static eliminating device, and establishing a corresponding association relation for each static monitoring device and each static eliminating device through the IP address; the static electricity monitoring device is respectively arranged at the front position and the rear position of the static electricity eliminating device, a closed loop feedback mode is adopted, one static electricity sensing device and one static electricity eliminating device correspondingly carry out linkage control one by one, and the static electricity monitoring and static electricity eliminating functions are automatically carried out on a product object to be eliminated; the electricity eliminating capability of the static electricity eliminating device can be monitored or judged; the static monitoring devices are arranged at different vertical distances, and the monitoring accuracy of the static monitoring devices under the same static voltage at different monitoring distances is judged and verified by comparing the measured values of the static monitoring devices on the same charged object, so that the performance of each static monitoring device is compared and judged.

The technical scheme of the invention is as follows: the closed-loop static monitoring and eliminating system comprises a static eliminating device, a static monitoring device and a movable object of a product to be eliminated, which is positioned on a guide rail, and is characterized in that:

a first static electricity monitoring device, a first static electricity eliminating device, a second static electricity monitoring device, a second static electricity eliminating device and a third static electricity monitoring device are sequentially arranged above the guide rail along the running route and the running direction of a product object to be eliminated on the guide rail;

the first static monitoring device is used for monitoring the initial static voltage of a product object to be discharged;

the first static elimination device is used for eliminating static of a product object to be eliminated for the first time;

the second static monitoring device is used for monitoring the residual static voltage of the product object to be discharged;

the second static elimination device is used for eliminating static of the product object to be eliminated again;

the third static monitoring device is used for monitoring the residual static voltage of the product object to be discharged;

the first static monitoring device and the first static eliminating device are arranged in a correlated mode, and linkage control is achieved; the second static monitoring device and the second static eliminating device are arranged in a correlation mode, and linkage control is achieved;

when the to-be-destaticized product object moves along the guide rail, the to-be-destaticized product object sequentially passes through the first static monitoring device to the third static monitoring device, the first static monitoring device controls the first static destaticizing device to output a first destaticizing capacity corresponding to the initial static voltage according to the initial static voltage of the to-be-destaticized product object, and the first static destaticizing device performs first static destaticizing on the to-be-destaticized product object;

then the second static monitoring device monitors the residual static voltage of the product object to be discharged after the first static elimination, and if the residual static voltage of the product object to be discharged is lower than a preset threshold value, the second static elimination device is in standby; if the residual static voltage of the to-be-eliminated product object is higher than the preset threshold value, the second static monitoring device controls the second static eliminating device to output static eliminating capacity corresponding to the residual static voltage value according to the residual static voltage of the to-be-eliminated product object, and the second static eliminating device carries out static elimination on the to-be-eliminated product object again;

and finally, monitoring whether the residual static voltage of the to-be-discharged product object meets the process specification requirement or not by the third static monitoring device, if so, releasing the residual static voltage, and if not, outputting an alarm signal.

Furthermore, the first, second and third static electricity monitoring devices, the first and second static electricity eliminating devices are respectively provided with independent IP addresses; the first, the second and the third static electricity monitoring devices, the first and the second static electricity eliminating devices are respectively connected with the control computer through a wired or wireless local area network in a communication way.

Specifically, the input ends of the first, second and third static monitoring devices are respectively electrically connected with the output end of the integrated power supply and are in communication connection with the control computer through a communication module in the integrated power supply; and the power supply input ends of the first and second static elimination devices are respectively and correspondingly connected with the power supply output end of the integrated power supply.

The closed loop type static monitoring and eliminating system disclosed by the invention adopts a closed loop type feedback mode, one static sensing device and one static eliminating device carry out linkage control in a one-to-one correspondence manner, and the static monitoring and static eliminating functions are automatically carried out on a product object to be eliminated.

The closed loop type static monitoring and eliminating system provided by the invention has the advantages that static monitoring is carried out on a product object to be eliminated at least twice, the next static eliminating capability is controlled according to the static monitoring result each time, and static elimination is automatically carried out on the product object to be eliminated for multiple times.

The invention also provides a static monitoring and eliminating system demonstration device which works by adopting the closed-loop static monitoring and eliminating system principle, and is characterized in that:

the static monitoring and eliminating system demonstration device is also provided with a fourth static sensing device, a fifth static sensing device, a test flat plate which can move along the guide rail in a controlled manner, a high-voltage direct-current power supply, a guide rail PLC controller and an integrated power supply;

the fourth static sensing device, the fifth static sensing device or the integrated power supply are respectively provided with independent IP addresses; the fourth static sensing device, the fifth static sensing device or the integrated power supply are respectively connected with the control computer through a wired or wireless local area network;

the control computer is an industrial touch screen computer, and system monitoring software is installed in the industrial touch screen computer and used for displaying the working state of the equipment on line and monitoring the working conditions of each static sensing device and each static eliminating device;

the vertical installation heights of the fourth static sensing device and the fifth static sensing device from the test panel are different, so that the monitoring accuracy of the plurality of static sensors under the same static voltage or the consistency of the monitored static voltage values under the same static voltage can be verified under different monitoring distances on the premise that the static voltage values on the surface of the target object are the same;

the test flat plate is used for bearing an object of a product to be discharged, and can reciprocate along the guide rail and stay at a certain position of the guide rail or stay at a certain preset position for a preset time under the control of the PLC;

the high-voltage direct-current power supply is used for applying initial static voltage to a product object to be eliminated, which moves to the head end or the tail end of the guide rail; the initial static voltage comprises a positive voltage or a negative voltage;

the guide rail PLC controller is used for controlling the movement speed or the movement range of the test flat plate on the guide rail, enabling the test flat plate to move to a certain set position, and continuing to move to other set positions after the test flat plate is static at the set position for a preset time;

the integrated power supply is used for supplying power to each static sensing device and each static eliminating device, and simultaneously, the working state and the working parameters of each device are transmitted to system monitoring software in a control computer in real time through a wired or wireless network.

Specifically, the vertical installation heights of the fourth electrostatic sensing device and the fifth electrostatic sensing device from the test flat plate are not equal to the vertical installation heights of the first to third electrostatic sensing devices from the test flat plate.

The closed loop type static monitoring and eliminating system operates according to the following modes:

a) the head and the tail ends of the guide rail are respectively provided with a positive high-voltage conductive plug and a negative high-voltage conductive plug, and the positive high-voltage conductive plug and the negative high-voltage conductive plug are respectively and correspondingly connected with a positive high-voltage output end and a negative high-voltage output end of a high-voltage direct-current power supply and are used for respectively applying positive voltage and negative voltage to the test flat plates moved to the head and the tail ends of the guide rail; meanwhile, a static monitoring device is respectively arranged above the head and tail end positions of the guide rail;

b) respectively setting a plurality of preset positions along the length direction of the guide rail, respectively setting two sets of static electricity elimination devices above two preset positions, and respectively setting a static electricity monitoring device above the front preset position and the rear preset position of each set of static electricity elimination device;

c) respectively arranging a static monitoring device above at least two adjacent preset positions in the length direction of the guide rail, wherein the vertical installation heights of the two static monitoring devices from the test flat plate are unequal;

d) establishing corresponding association relation for each static monitoring device and each static eliminating device through an IP address in system monitoring software; and the static monitoring devices positioned at the front and back positions of each set of static eliminating device and the corresponding static eliminating devices establish corresponding control association relations; the control association relationship at least comprises: along the moving direction of the test flat plate, the static monitoring output signal of the static monitoring device positioned in front of each static eliminating device is used for controlling the operation starting control of the static eliminating device positioned in the rear position of the static monitoring device;

e) the guide rail PLC controller controls the test flat plate to move; when the system monitoring software initially runs, the test flat plate is positioned at the first position of the head end of the guide rail, and the test flat plate is electrically contacted with the positive high-voltage output end of the high-voltage direct-current power supply, so that the test flat plate is positively charged;

the electrostatic sensor at the first position of the head end of the guide rail monitors the electrostatic voltage on the flat plate, transmits a monitoring signal to the industrial touch screen computer, and displays the electrostatic voltage monitored by the electrostatic sensor on monitoring software; if the monitored static voltage exceeds a set alarm threshold value, the first-end static sensor outputs a red alarm signal;

f) the guide rail PLC controller controls the test flat plate to move, each static sensing device arranged at the second position, the third position and the fourth position respectively monitors the static voltage on the test flat plate at the corresponding position and transmits a monitoring signal to the industrial touch screen computer, and if the static voltage monitored by the static sensor at a certain position exceeds a set alarm threshold value, the corresponding static sensor outputs a red alarm signal;

g) when the test panel moves to the fourth position, the static voltage monitored by the corresponding static sensing device exceeds a threshold value, an alarm signal is transmitted to the industrial touch screen computer, and linkage control exists between the static sensing device and the first static eliminating device, so that the industrial touch screen computer starts the first static eliminating device to work to eliminate static charges on the test panel;

h) when the test flat plate moves to the sixth position, because the first static eliminating device eliminates the static charge on the test flat plate, the static sensing device corresponding to the position cannot monitor the static charge on the flat plate or the static voltage value is lower than the set static threshold value;

i) when the test flat plate moves to the eighth position, the test flat plate is electrically contacted with the negative high-voltage output end of the high-voltage direct-current power supply, so that the test flat plate is charged with negative static electricity; the static sensing device corresponding to the position monitors that the test flat plate has negative static electricity and exceeds a set threshold value, so that an alarm signal is transmitted to the industrial touch screen computer, and the test flat plate makes return motion under the control of the guide rail PLC;

j) when the test panel with negative static electricity moves back to the seventh position, the corresponding static electricity sensing device monitors that the static voltage exceeds the threshold value at the previous position, the alarm signal is transmitted to the industrial touch screen computer, and the static electricity sensing device 6 is in linkage control with the second static electricity eliminating device, so that the monitoring system starts the second static electricity eliminating device to work to eliminate the negative charge on the test panel.

k) When the test panel is de-electrified by the ion fan and moves to a sixth position, the corresponding static sensing device monitors that the negative charges on the test panel are eliminated;

l) the test plate then passes through the fifth, fourth, third and second positions in sequence and after a set dwell time at each position, returns to the initial first position.

Furthermore, the static monitoring and eliminating system demonstration device is characterized in that at least two static monitoring devices with unequal vertical installation heights away from the test flat plate are arranged on the moving path of the test flat plate to monitor the static voltage of the test flat plate, and the monitoring accuracy of the plurality of static monitoring devices under the same static voltage at a plurality of different monitoring distances is judged and verified by comparing the measured values of the static monitoring devices;

the static monitoring and eliminating system demonstration device is characterized in that at least two sets of static eliminating devices are arranged on a moving path of the test flat plate, and the static eliminating effects of the static eliminating devices are compared to judge and verify the static eliminating performance of each static eliminating device or each set of static eliminating device;

the static monitoring and eliminating system demonstration device is used as a static monitoring and eliminating demonstration device and plays a role in technical demonstration.

Specifically, the test flat plate comprises an upper square stainless steel flat plate and a lower square stainless steel flat plate which have the same structure and size, the lower flat plate is fixedly arranged on a sliding platform of the guide rail, and the upper flat plate and the lower flat plate are isolated by polytetrafluoroethylene cylinders in an insulating way and are supported and fixed;

the bottom of the upper flat plate is respectively fixed with a conductive end at the front end and the rear end of the central line position of the motion direction of the test flat plate, and the conductive ends are of a hollow columnar structure and are used for contacting positive and negative high-voltage conductive plugs arranged at the head end and the tail end of the guide rail;

the positive and negative high-voltage conductive plugs are respectively arranged at the head and the tail ends of the guide rail and respectively and correspondingly electrically connected with the positive and negative high-voltage output ends of the high-voltage direct-current power supply.

Compared with the prior art, the invention has the advantages that:

1. an independent IP address is set for each static monitoring device or static eliminating device, and a corresponding incidence relation is established for each static monitoring device and each static eliminating device through the IP address, so that each system component has networking capability, a static monitoring and eliminating system capable of meeting customer requirements is conveniently constructed in a local area network building mode on a production site, and the system is good in expandability;

2. a closed loop feedback mode is adopted, the static sensing devices and the static eliminating devices correspondingly carry out linkage control one by one, and the static monitoring and static eliminating functions are automatically carried out on the objects of the products to be eliminated; the static electricity eliminating device can also monitor or judge the electricity eliminating capacity of the static electricity eliminating device, thereby enhancing the self-judging capacity and the static electricity eliminating effect of the whole static electricity monitoring and eliminating system, being beneficial to a user to judge or judge whether the functions of each monitoring and static electricity eliminating part are normal or not, reducing the workload of field service of manufacturers, and shortening the time or period of solving problems and processing faults on site;

3. the static monitoring devices are arranged at different vertical distances, and the measured values of the static monitoring devices on the same charged object are compared to judge and verify the monitoring accuracy of the static monitoring devices under the same static voltage at different monitoring distances, so that the comparison and judgment of the performance of the static monitoring devices are facilitated;

4. the method adopts a logic control mode of multiple static monitoring and multiple static elimination, and carries out static voltage monitoring once again on a to-be-eliminated product object after being subjected to static elimination, automatically determines whether the static elimination needs to be carried out again according to the static monitoring result every time, automatically controls the static elimination capacity of the next time, carries out multiple static elimination on the to-be-eliminated product object, and realizes intelligent automatic monitoring and static elimination in the true sense.

Drawings

FIG. 1 is a schematic diagram of a basic structure of a closed-loop static electricity monitoring and eliminating system according to the present invention;

FIG. 2 is an electrical schematic diagram of the closed loop static monitoring and elimination system of the present invention;

FIG. 3 is a schematic layout of a mechanical structure according to a first embodiment of the present invention;

FIG. 4 is a schematic layout of the mechanical structure of the second embodiment of the present invention;

FIG. 5 is a schematic view showing the positional relationship between the conductive terminals and the positive and negative high voltage conductive plugs;

FIG. 6a is a schematic diagram illustrating a logic control flow of an ion bar according to an embodiment;

FIG. 6b is a schematic logic flow diagram of an ion blower according to an embodiment;

FIG. 7a is a schematic view of a logic control flow of the ion bar according to the second embodiment;

FIG. 7b is a schematic logic control flow chart of the ion blower according to the second embodiment;

FIG. 8a is a schematic diagram of the logic control flow of the ion bar according to the third embodiment;

fig. 8b is a schematic logic control flow diagram of the ion blower according to the third embodiment.

In the figure, 1 is a guide rail, 1a is a head end of the guide rail, 1b is a tail end of the guide rail, 1c is a guide rail sliding platform, 2 is a test flat plate, 2a and 2b are conductive ends, 3 is a first static electricity monitoring device, 4 is a first static electricity eliminating device, 5 is a second static electricity monitoring device, 6 is a second static electricity eliminating device, 7 is a third static electricity monitoring device, 8 is a control computer, 9 is a centralized power supply, 10 is a high-voltage direct-current power supply, and 11 is a guide rail PLC controller;

① for position 1, ② for position 2, …, ⑧ for position 8, ⑨ for position 9;

CGQn is an electrostatic sensor (n is a natural number, the same below) numbered n, XCQn is an electrostatic eliminator (n is a natural number) numbered n, + HV is a positive high-voltage conductive plug, and-HV is a negative high-voltage conductive plug.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

In fig. 1, the technical solution of the present invention provides a closed loop type static electricity monitoring and eliminating system, which includes a static electricity eliminating device, a static electricity monitoring device, and a movable object (or called a test plate, which is denoted by reference numeral 2 in fig. 1, the same applies below) of a product to be eliminated, which is located on a guide rail, and is characterized in that:

along the running route and running direction of a product object to be destaticized on the guide rail 1, a first static electricity monitoring device 3, a first static electricity destaticizing device 4, a second static electricity monitoring device 5, a second static electricity destaticizing device 6 and a third static electricity monitoring device 7 are arranged above the guide rail in sequence;

the first static monitoring device is used for monitoring the initial static voltage of the product object 2 to be discharged;

the first static elimination device is used for eliminating static of a product object to be eliminated for the first time;

the second static monitoring device is used for monitoring the residual static voltage of the product object to be discharged;

the second static elimination device is used for eliminating static of the product object to be eliminated again;

the third static monitoring device is used for monitoring the residual static voltage of the object of the product to be discharged.

The first static monitoring device and the first static eliminating device are arranged in a correlated mode, and linkage control is achieved;

the related setting and the realization of linkage control here mean that: the signal output end of the first static monitoring device is correspondingly connected with the control signal input end of the first static eliminating device, so that the first static monitoring device can control the starting of the first static eliminating device, or can control the starting of the first static eliminating device and control the static eliminating capacity output by the first static eliminating device.

Similarly, the second static electricity monitoring device and the second static electricity eliminating device are arranged in a related mode, and linkage control is achieved;

when a product object to be destaticized (represented by a test flat plate 2 in the figure) moves along the guide rail (an example of moving from right to left is given in the figure), the product object to be destaticized sequentially passes through the first static monitoring device to the third static monitoring device, the first static monitoring device controls the first static destaticizing device to output a first destaticizing capacity corresponding to the initial static voltage according to the initial static voltage of the product object to be destaticized, and the first static destaticizing device performs first static destaticizing on the product object to be destaticized.

Then the second static monitoring device monitors the residual static voltage of the product object to be discharged after the first static elimination, and if the residual static voltage of the product object to be discharged is lower than a preset threshold value, the second static elimination device is in standby; and if the residual static voltage of the to-be-eliminated product object is higher than the preset threshold value, the second static monitoring device controls the second static eliminating device to output static eliminating capacity corresponding to the residual static voltage value according to the residual static voltage of the to-be-eliminated product object, and the second static eliminating device carries out static elimination on the to-be-eliminated product object again.

And finally, monitoring whether the residual static voltage of the to-be-eliminated product object meets the process specification requirements or not by a third static monitoring device, if the residual static voltage meets the specifications, releasing the residual static voltage, if the residual static voltage exceeds the standards, outputting an alarm signal, and sending out an alarm of an acoustic or optical signal by an acoustic and optical alarm device.

Furthermore, the first, second and third static electricity monitoring devices, the first and second static electricity eliminating devices are respectively provided with independent IP addresses; the first, the second and the third static electricity monitoring devices, the first and the second static electricity eliminating devices are respectively connected with the control computer through a wired or wireless local area network.

Further, the static monitoring device is a static monitoring head and/or a static sensor, and the first static eliminating device and the second static eliminating device can be ion bars and/or ion fans.

In fig. 2, the signal output terminals of the first, second and third static electricity monitoring devices 3, 5 and 7 are respectively connected with a control computer 8;

the power input ends of the first and second static elimination devices 4 and 6 are respectively and correspondingly connected with the power output end of the integrated power supply.

Through the arrangement of the module structure, two independent closed-loop feedback units are formed between the first static monitoring device and the first static eliminating device and between the second static monitoring device and the second static eliminating device; the two closed-loop feedback units form a complete closed-loop feedback system and an operating mode from the whole system.

The closed loop type static monitoring and eliminating system adopts a closed loop type feedback mode, one static sensing device and one static eliminating device correspondingly carry out linkage control one by one, and the static monitoring and static eliminating functions are automatically carried out on a product object to be eliminated.

According to the closed-loop static monitoring and eliminating system, static monitoring is performed on a product object to be eliminated at least twice, the capacity of next static elimination is controlled according to the result of each static monitoring, and multiple times of static elimination are automatically performed on the product object to be eliminated.

In fig. 3, in order to meet the above requirement, the present invention further provides a static electricity monitoring and eliminating system demonstration apparatus operating according to the principle of the closed loop static electricity monitoring and eliminating system, and the invention is characterized in that:

on the basis of the hardware structure and the working mode of the closed-loop static monitoring and eliminating system, the static monitoring and eliminating system demonstration device is further provided with a fourth static sensing device (marked by CGQ2 in the figure), a fifth static sensing device (marked by CGQ3 in the figure), a test flat plate 2 (namely the to-be-eliminated product object) capable of controlled movement along the guide rail 1, a high-voltage direct-current power supply 10, a guide rail PLC (programmable logic controller) 11 and an integrated power supply 9.

The fourth static sensing device, the fifth static sensing device or the integrated power supply are also respectively provided with independent IP addresses; the fourth static sensing device, the fifth static sensing device or the integrated power supply are respectively connected with the control computer 8 through a wired or wireless local area network.

The control computer is an industrial touch screen computer, and system monitoring software is installed in the industrial touch screen computer and used for displaying the working state of the equipment on line and monitoring the working conditions of each static sensing device and each static eliminating device.

The vertical installation heights of the fourth electrostatic sensing device and the fifth electrostatic sensing device from the test panel are different, and the fourth electrostatic sensing device and the fifth electrostatic sensing device are used for verifying the monitoring accuracy or the consistency of the electrostatic voltage values of the plurality of electrostatic sensors under the same electrostatic voltage under different monitoring distances on the premise that the electrostatic voltage values of the surface of the target object are the same.

The test flat plate 2 is positioned on a guide rail sliding platform 1c which can move along the guide rail and is used for bearing an electric product object to be eliminated, and the test flat plate can reciprocate along the guide rail and stay at a certain position of the guide rail or stay at a certain preset position for a preset time under the control of the guide rail PLC 11.

The high-voltage direct-current power supply is used for applying initial static voltage to a product object to be eliminated, which moves to the head end or the tail end of the guide rail; the initial static voltage includes a positive voltage or a negative voltage.

The guide rail PLC is used for controlling the movement speed or the movement range of the test flat plate on the guide rail, enabling the test flat plate to move to a certain set position, and after the test flat plate is static at the set position for a preset time, continuing to move to other set positions.

The integrated power supply is used for supplying power to each static sensing device and each static eliminating device, and simultaneously transmitting the working state and the working parameters of each device to system monitoring software in the control computer in real time through a wired or wireless network.

Specifically, the vertical mounting heights of the fourth electrostatic sensing device and the fifth electrostatic sensing device from the test panel are not equal to the vertical mounting heights of the first to third electrostatic sensing devices from the test panel.

Regarding the problem of monitoring the same electrostatic voltage value on the surface of the object by the electrostatic sensor at different monitoring distances in the technical scheme, the following is further explained:

1. the same charged target object is monitored by the electrostatic sensors of the same type at different monitoring distances, and the accuracy of monitoring the parameter of the electrostatic voltage on the surface of the object by the sensors can be verified.

2. The electrostatic sensor monitors the same electrostatic voltage value of different charged target objects at different monitoring distances, and can verify the accuracy of the sensor in monitoring the parameter of the electrostatic voltage on the surface of the object.

The application background according to the above monitoring scheme is as follows:

in the production line of the liquid crystal panel, the situation that the same type (same structure size) of liquid crystal panel flows through various process operation devices exists, and the mounting distance of the electrostatic sensor (namely, the monitoring distance, the distance between the electrostatic sensing head and the target object) is inevitably determined according to the space mounting requirement of the process operation devices; in more complex situations, there is a practical situation that the same production line is used for producing liquid crystal panels of different types (different structural sizes).

The reason for implementing the above monitoring scheme is as follows:

the same kind of liquid crystal panel should generate substantially the same electrostatic voltage value through the same process, and should obtain substantially the same static electricity removing effect (i.e., substantially the same residual electrostatic voltage) after passing through the same static electricity remover. The mounting heights of the electrostatic sensors may be different, so that the electrostatic sensors are required to have consistent monitoring results for target objects carrying the same electrostatic voltage value at different monitoring distances in order to ensure the consistency of the electrostatic voltage monitoring (alarm) standards and facilitate better control of production quality.

The monitoring scheme has the following advantages:

in technical principle, objects with the same surface static voltage value do not necessarily carry the same static charge, i.e. the capacitance of the objects is different. Static charges on the surface of an object can radiate an electrostatic field outwards, and zero potential is formed at a grounding conductor existing at or near infinity; therefore, the electrostatic field formed by the electrostatic charge is weaker the farther away from the electrostatic charge, i.e. the electrostatic voltage value monitored by the electrostatic sensor is smaller (in this patent, the electrostatic sensor is essentially monitoring the electrostatic field formed by the electrostatic charge on the surface of the object).

The electrostatic sensor in the patent realizes different target objects under different monitoring distances by setting different monitoring coefficients (amplification coefficients) for different monitoring distances and adopting a method of an electronic element with higher resolution, but the electrostatic voltage values monitored by the sensor are consistent as long as the surface electrostatic voltage values are the same.

The monitoring result has consistency, uniqueness and repeatability, has strong operability and convenience for electrostatic control in the production process of products, and has good practical application effect.

As shown in fig. 3, the closed loop static monitoring and eliminating system according to the technical solution of the present invention operates and works as follows:

a) positive and negative high-voltage conductive plugs (shown as + HV and-HV in figure 3) are respectively arranged at the head end 1a and the tail end 1b of the guide rail, and are respectively and correspondingly connected with the positive and negative high-voltage output ends of the high-voltage direct-current power supply 10 and used for respectively applying positive and negative voltages to the test flat plate 2 moved to the head end and the tail end of the guide rail; meanwhile, a static monitoring device (marked as CGQ1 and CGQ6 in the figure) is respectively arranged above the head end position and the tail end position of the guide rail and used for monitoring the initial values of positive voltage and negative voltage on the test flat plate 2 positioned at the head end position and the tail end position of the guide rail, and the two static monitoring devices can also play a role in detecting whether the positive high voltage output and the negative high voltage output of the high-voltage direct-current power supply 10 are normal or not;

b) a plurality of predetermined positions (position 1 to position 9 are represented by ① to ⑨ in the figure, the same applies below) are respectively set along the length direction of the guide rail, two sets of static elimination devices (a first static elimination device is represented by XCQ1 and a second static elimination device is represented by XCQ2 in the figure) are respectively arranged above two predetermined positions ( positions ⑤ and ⑦ in the figure), and one static monitoring device (reference numerals are represented by CGQ4, CGQ5 and CGQ6 in the figure) is respectively arranged above the front and rear predetermined positions ( positions ④, ⑥ and ⑧ in the figure) of each set of static elimination device.

The rightmost static monitoring device CGQ6 in the figure has two functions at the same time: firstly, whether the residual static electricity or the static voltage value on the test panel 2 is lower than a set alarm threshold value after the second static electricity eliminating device XCQ2 is powered off is monitored; secondly, after the high-voltage direct-current power supply 10 applies negative voltage to the test flat plate 2 moved to the tail end position of the guide rail, the high-voltage direct-current power supply is used for monitoring an initial negative voltage value on the test flat plate 2 positioned at the tail end position of the guide rail;

the static electricity monitoring device CGQ6 can also be respectively arranged by adopting two static electricity monitoring devices CGQ6 ' and CGQ6 ', wherein one static electricity monitoring device CGQ6 ' is used for monitoring whether the residual static electricity or static voltage value on the test panel 2 is lower than a set alarm threshold value after being de-electrified by the second static electricity eliminating device XCQ2, and the other static electricity monitoring device CGQ6 ' is used for monitoring the negative voltage initial value on the test panel 2 positioned at the tail end position of the guide rail, in this case, the static electricity monitoring device CGQ6 ' is arranged above the position ⑧, and the static electricity monitoring device CGQ6 ' is arranged at the position ⑧ ' between the position ⑦ and the position ⑧ (not shown in the figure);

c) in the length direction of the guide rail, respectively arranging a static monitoring device (at the position 2 and the position 3 in the figure) above at least two adjacent preset positions, wherein the two static monitoring devices (marked as CGQ2 and CGQ3 in the figure) have unequal vertical installation heights from the test flat plate 2 (actually, in the figure 3, the static monitoring devices marked as CGQ1 to CGQ6 have unequal vertical installation heights from the test flat plate 2, and can complete the same monitoring data verification function);

d) in system monitoring software, establishing corresponding association relation for each static monitoring device and each static eliminating device through an IP address; and the static monitoring devices positioned at the front and back positions of each set of static eliminating device and the corresponding static eliminating devices establish corresponding control association relations; the control association relationship at least comprises: along the moving direction of the test flat plate, the static monitoring output signal of the static monitoring device positioned in front of each static eliminating device is used for controlling the operation starting control of the static eliminating device positioned in the rear position of the static monitoring device;

e) when the system monitoring software initially runs, the test flat plate is positioned at a first position (represented by ① in the figure, the same applies below) of the head end 1a of the guide rail, and the test flat plate is electrically contacted with a positive high-voltage output end + HV of the high-voltage direct-current power supply, so that the test flat plate is positively charged;

the electrostatic sensor at the first position of the head end of the guide rail monitors the electrostatic voltage on the flat plate, transmits a monitoring signal to the industrial touch screen computer, and displays the electrostatic voltage monitored by the electrostatic sensor on monitoring software; if the monitored static voltage exceeds a set alarm threshold value, the head end static sensor CGQ1 outputs a red alarm signal;

f) the guide rail PLC controller controls the test flat plate to move, the test flat plate sequentially passes through each preset position, each static sensing device arranged on the positions respectively monitors the static voltage on the test flat plate at the corresponding position, monitoring signals are transmitted to the industrial touch screen computer, and if the static voltage monitored by the static sensor at a certain position exceeds a set alarm threshold value, the corresponding static sensor outputs a red alarm signal;

g) when the test panel moves to the position 4, because the static voltage monitored by the corresponding electrostatic sensing device No. 4 (marked as CGQ4 in the figure) exceeds the threshold value and an alarm signal is transmitted to the industrial touch screen computer, and there is linkage control between the electrostatic sensing device 4 and the first static eliminating device (marked as XCQ1 in the figure, for example, an ion bar), the industrial touch screen computer (monitoring system) starts the electrostatic eliminating device to work, and eliminates the static charge on the test panel;

h) when the test flat plate moves to the position 6, the static electricity sensing device No. 5 (marked as CGQ5) corresponding to the position cannot monitor the static electricity on the flat plate or the static voltage is lower than a set alarm threshold value because the static electricity on the test flat plate is eliminated by the first static electricity eliminating device (marked as XCQ 1);

i) when the test flat plate 2 moves to the position 8, the test flat plate is electrically contacted with a negative high-voltage output end-HV of the high-voltage direct-current power supply, so that the test flat plate is charged with negative static electricity; the static sensing device CGQ6 corresponding to the position monitors that the test flat plate has negative static electricity and exceeds a set threshold value, so that an alarm signal is transmitted to the industrial touch screen computer, and the test flat plate makes return motion under the control of the guide rail PLC;

j) when the test panel with negative static electricity moves back to the position 7, the static voltage exceeds the threshold value and is detected by the corresponding static sensing device CGQ6 No. 6 at the previous position, an alarm signal is transmitted to the industrial touch screen computer, and the static sensing device CGQ6 No. 6 and the second static eliminating device (taking the ion fan as an example, the label is XCQ2) are controlled in a linkage mode, so that the monitoring system starts the ion fan to work, and the negative charge on the test panel is eliminated.

k) When the test panel is moved to the position 6 after being de-electrified by the ion fan, the corresponding static electricity sensing device CGQ5 monitors that the negative charges on the test panel are eliminated or the static voltage is lower than a set alarm threshold value;

l) subsequently, the test plate passes through the 5 th, 4 th, 3 rd and 2 nd positions in sequence and after dwelling at each position for a set time, returns to the initial 1 st position.

Furthermore, the static monitoring and eliminating system demonstration device is characterized in that at least two static monitoring devices (taking No. 2 and No. 3 static sensors as examples in the figure, and marked as CGQ2 and CGQ3 in the figure) which are not equal to the vertical installation height of the test flat plate are arranged on the moving path of the test flat plate to monitor the static voltage of the test flat plate, and the actual measurement values of the two static monitoring devices are compared to judge and verify the monitoring accuracy of a plurality of static monitoring devices under the same static voltage under a plurality of different monitoring distances.

The static monitoring and eliminating system demonstration device provided by the invention has the advantages that at least two sets of static eliminating devices are arranged on the moving path of the test flat plate, and the static eliminating effect of each set of static eliminating devices is compared to judge and verify the static eliminating performance of each static eliminating device or each set of static eliminating device.

Meanwhile, the static monitoring and eliminating system demonstration device provided by the invention can be used as a static monitoring and eliminating demonstration device and can also play a technical demonstration role.

In fig. 5, the test flat plate 2 comprises an upper square stainless steel flat plate and a lower square stainless steel flat plate with the same structure and size, the lower flat plate is installed and fixed on a sliding platform 1c of the guide rail, and the upper flat plate and the lower flat plate are isolated by polytetrafluoroethylene cylinders in an insulating way and are supported and fixed;

at the bottom of the upper flat plate, a conductive end 2a and a conductive end 2b are respectively fixed at the front end and the rear end of the central line position in the motion direction of the test flat plate, and the conductive ends are of a hollow columnar structure and are used for contacting positive and negative high-voltage conductive plugs (the negative high-voltage conductive plug-HV is taken as an example in the figure) arranged at the head end and the tail end of the guide rail;

as shown in fig. 3 and 5, the positive and negative high-voltage conductive plugs are respectively disposed at the head end 1a and the tail end 1b of the guide rail, and are respectively and electrically connected to the positive and negative high-voltage output ends of the high-voltage direct-current power supply.

The implementation of the technical scheme brings the advantages that:

in technical principle, objects with the same surface static voltage value do not necessarily carry the same static charge, i.e. the capacitance of the objects is different. Static charges on the surface of an object can radiate an electrostatic field outwards, and zero potential is formed at a grounding conductor existing at or near infinity; therefore, the farther the electrostatic field formed by the electrostatic charge is from the electrostatic charge, the weaker the field strength is, that is, the smaller the electrostatic voltage value monitored by the electrostatic sensor is (in the technical scheme of the patent, the electrostatic sensor is essentially monitoring the electrostatic field formed by the electrostatic charge on the surface of the object).