阅读说明：本技术 用于举升机的pcb智能控制装置 (PCB intelligent control device for lifter ) 是由 刘立峰 于 2020-03-30 设计创作，主要内容包括：用于举升机的PCB智能控制装置。本发明公开了一种PCB智能控制装置,包括PCB继电器模块、PCB主控模块,以及安装在举升机的升降平台上的光电传感单元,其中,所述光电传感单元用于检测两侧升降平台的高度差数据,并将所述高度差数据发送给PCB主控模块,所述PCB主控模块判定所述高度差数据是否超出设定的阈值,并在超出设定的阈值时,切断电源开关,所述PCB继电器模块在检测到电源关闭时,对举升机动作执行元件进行相应控制。本发明解决了原有的控制装置对举升机无法进行有效的智能控制的问题。(A PCB intelligent control device for machine of lifting. The invention discloses a PCB intelligent control device, which comprises a PCB relay module, a PCB main control module and a photoelectric sensing unit arranged on a lifting platform of a lifter, wherein the photoelectric sensing unit is used for detecting height difference data of the lifting platforms at two sides and sending the height difference data to the PCB main control module, the PCB main control module judges whether the height difference data exceeds a set threshold value or not, and cuts off a power switch when the height difference data exceeds the set threshold value, and the PCB relay module correspondingly controls an action executive element of the lifter when detecting that a power supply is turned off. The invention solves the problem that the original control device can not carry out effective intelligent control on the lifter.)

1. The utility model provides a PCB intelligent control device for machine of lifting which characterized in that includes: PCB relay module, PCB host system to and install the photoelectric sensing unit on the lift platform of machine of lifting, wherein, photoelectric sensing unit is used for detecting both sides lift platform's difference in height data, and will difference in height data send for PCB host system, PCB host system judges whether difference in height data surpasss the threshold value of settlement, and when surpassing the threshold value of settlement, cuts off switch, PCB relay module carries out corresponding control to the machine action executive component that lifts when detecting that the power is closed.

2. The PCB intelligent control device of claim 1, wherein the PCB relay module comprises a plurality of sets of relays encapsulated and fixed on a PCB base plate, each set of relays comprises a plurality of normally open contacts and a plurality of normally closed contacts, and an interlocking mechanism is formed among the plurality of sets of relays.

3. The PCB intelligent control device of claim 2, wherein the PCB main control module is configured to, when detecting that the detection signal exceeds the set threshold, perform filtering and anti-shaking processing on the detection signal, and switch off the power contact switch of the button if the detection signal is determined to still exceed the set threshold.

4. The PCB intelligent control device of claim 1, wherein the PCB main control module is integrated with a power conversion interface, a TTL level interface, an input/output interface, a programmable main control MCU chip, and a display screen, wherein the power conversion interface is used for converting AC to DC power to supply power to the PCB main control module and the PCB relay module, the TTL level interface is connected with peripheral equipment to obtain relevant information of the equipment, the main control MCU chip is used for operating data, and the display screen is used for displaying current operating status data.

5. The PCB intelligent control device of claim 4, wherein the PCB master control module is further integrated with a wireless communication chip for sending the running state data and the fault data of the equipment to a cloud server.

6. The PCB intelligent control device of claim 2 or 3, wherein the PCB relay module comprises an input end and an output end with a plurality of terminals, the input end of the relay module is connected with a control button, the power supply of the control button is controlled by a controllable contact switch of the PCB main control module, and the output end of the relay module is connected with a control coil of a component to be controlled.

7. The PCB intelligent control device of claim 1, wherein the photoelectric sensing unit comprises a reflector and a photoelectric sensor respectively arranged at the end parts of the lifting platforms at two sides, a light spot emitted by the photoelectric sensor is over against the center of the reflector, or scattered light emitted by the light spot sensor can at least completely cover the reflector.

8. The PCB intelligent control device of claim 6, wherein a transparent cover is mounted outside the relay, and the bottom of the relay is inserted into the hole on the PCB base plate through a pin and then is fixed by soldering tin.

9. The PCB intelligent control device of claim 6, wherein the PCB main control module sets the lifter to perform an operation of ascending for a distance and then descending after detecting a descending command triggered by the lifter.

10. The PCB intelligent control device of claim 7, wherein the height difference data is expanded by setting a delay time for the PCB master control module.

Technical Field

The invention belongs to electronic equipment, and particularly relates to an intelligent control device for a PCB (printed circuit board).

Background

At present, the lifting machine plays a vital role in automobile maintenance. At present, the common lifters on the market include letter shear lifters, double-column lifters, gantry lifters, four-column lifters, and the like.

At present, the domestic lifter industry uses a control system consisting of various relays or PCB (printed circuit board), the working principle of a common relay is that a plurality of relays are connected by wires according to a pre-designed schematic diagram, and the control purpose is achieved through the suction sequence and action of the relays. A single PCB integrated circuit realizes the control of the lifter with the function similar to a relay circuit through a gate logic circuit.

At present, the control of the lifting machine is not intelligent enough, a plurality of problems exist in the operation process of equipment, for example, the wiring of a PCB relay is complicated, a control panel is solidified and cannot be expanded, the lifting inclination of the lifting machine cannot be effectively monitored, and the intelligent degree is not high.

Disclosure of Invention

Based on the above defects in the prior art, the present invention provides an intelligent PCB control device for a lifting machine, so as to solve the problem that the original control device cannot perform effective intelligent control on the lifting machine.

The technical scheme adopted by the invention is as follows:

the utility model provides a PCB intelligent control device, includes PCB relay module, PCB host system to and install the photoelectric sensing unit on the lift platform of machine of lifting, wherein, the photoelectric sensing unit is used for detecting the difference in height data of both sides lift platform, and will the difference in height data is sent for PCB host system, PCB host system judges whether the difference in height data surpasss the threshold value of settlement, and when surpassing the threshold value of settlement, cut off switch, PCB relay module is when detecting the power and close, and the control is waited to control equipment and is stopped the operation.

Further, the PCB relay module comprises a plurality of groups of relays which are packaged and fixed on the PCB bottom plate, each group of relays comprises a plurality of normally open contacts and a plurality of normally closed contacts, and an interlocking mechanism is formed among the relays.

Furthermore, when the PCB main control module detects that the detection signal exceeds the set threshold value, the PCB main control module performs filtering and anti-shaking processing on the detection signal, and if the detection signal is determined to still exceed the set threshold value range, the power contact switch of the button is switched off.

Furthermore, a power conversion interface, a TTL level interface, an input/output interface, a programmable main control MCU chip and a touch screen are integrated on the PCB main control module, the power conversion interface supplies an ac to dc power to supply power to the PCB main control module and the PCB relay module, the TTL level interface is connected to a peripheral device to obtain related information of the device, the main control MCU chip is used for performing operation processing on data, and the display screen displays current operating state data and fault data.

Further, a wireless communication chip is integrated on the PCB main control module and used for sending the running state data and the fault data of the equipment to a cloud server. The wireless communication chip is preferably a WiFi chip.

Further, PCB relay module is including input and the output that has a plurality of terminals, relay module's input connection control button, control button's power supply by PCB host system's controllable contact switch control, relay module's output is connected and is waited to control the control coil of components and parts.

Furthermore, the photoelectric sensing unit comprises a reflector and a photoelectric sensor which are respectively arranged at the end parts of the lifting platforms at the two sides, and the photoelectric sensor is opposite to the center of the reflector.

Furthermore, the external installation of relay has the translucent cover, the relay bottom is inserted the trompil on the PCB bottom plate through the contact pin after, through soldering tin welded fastening.

Furthermore, after the PCB main control module detects that the lifting machine triggers a descending instruction, the PCB main control module sets that the lifting machine firstly ascends for a short distance and then executes descending operation.

Furthermore, the height difference data is expanded by setting time delay for the PCB main control module.

Compared with the prior art, the PCB intelligent control device provided by the invention has the following technical effects:

1. the PCB intelligent control device disclosed by the invention detects whether the height difference of the platforms at two sides exceeds the range through the photoelectric switch arranged on the lifting platform of the lifter, further confirms whether the height difference exceeds the range through filtering processing and anti-shaking, cuts off the power supply of the button after the height difference exceeds the range, closes the motor through the coil breakpoint of the lifting motor contactor controlled by the PCB relay module due to the cut-off of the power supply, and cuts off the control coil of the bidirectional electromagnetic valve through the interlocking of the relay contact, so that any operation carried out through the button fails under the condition, and the safety of the system is greatly improved.

2. According to the PCB intelligent control device disclosed by the invention, a plurality of groups of relays with a plurality of normally open normally closed contacts are integrated on a specially designed PCB base plate, so that the maintenance problem caused by excessive wiring is solved, the overall size is reduced, the problems that a plug-in relay is easy to fall off and the like are solved, the relay body is transparent, the internal action is clear and visible, and the fault diagnosis by maintenance personnel is facilitated.

Drawings

Fig. 1 is a schematic diagram of a PCB intelligent control device in an embodiment of the present invention.

Fig. 2 is a schematic installation diagram of the photoelectric sensing unit in the embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a PCB relay module in an embodiment of the present invention.

Fig. 4 is a circuit connection diagram of a relay in the embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 2, an intelligent PCB control device disclosed in an embodiment of the present invention includes a PCB relay module, a PCB main control module, and a photoelectric sensing unit installed on a lifting platform of a lifter, where the photoelectric sensing unit is installed on the lifting platform and is configured to detect height difference data of the lifting platforms on two sides and send the height difference data to the PCB main control module, the PCB main control module determines whether the height difference data exceeds a set threshold according to the received height difference data, and if the height difference data does not exceed the set threshold, it indicates that the height difference data is within a safety range, and if the height difference data exceeds the set threshold, it indicates that the platform has a tilt risk, then the PCB main control module actively turns off a power switch, and when the PCB relay module detects that a power supply is turned off, the relay controls a valve or a coil of a corresponding action execution element to stop working.

As a preferred embodiment of the present invention, when the PCB main control module detects that the detected signal exceeds the set threshold, the PCB main control module performs filtering and anti-shaking processing on the detected signal, and then turns off the power contact switch of the button if the detected signal still exceeds the set threshold, because the signal may be unstable when the machine is in motion, through the filtering processing and the software anti-shaking processing, it is able to more accurately judge whether an abnormality occurs, and it is able to implement early prevention for car damage and people injury.

The PCB relay module, the PCB main control module and the photoelectric sensing unit of the present invention will be described in detail below.

Referring to fig. 2, the lifting machine has two lifting platforms 1 for supporting a vehicle, wherein the lifting platforms are two rectangular platforms capable of fixing the vehicle, and the two rectangular platforms respectively have a pair of rectangular surfaces oppositely arranged, and two pairs of adjacent rectangular surfaces, wherein the rectangular surfaces oppositely arranged are long rectangular surfaces, i.e., surfaces along the length direction of the vehicle, and the two adjacent rectangular surfaces are short rectangular surfaces, i.e., surfaces along the width direction of the vehicle.

But on the embodiment ground, install reflector panel 11 and photoelectric sensor 12 respectively on two adjacent short rectangular surfaces, photoelectric sensor 12 aims at the central point of reflector panel 11 and puts, and photoelectric sensor 12 sends the signal, and reflector panel 11 receives the back, reflects back the reflected signal, because the photoelectric sensor transmission is parallel light signal, when photoelectric sensor can't receive the signal of reflection, say that the elevating platform 1 of both sides has appeared the error slope promptly, and the error slope has surpassed the range that photoelectric sensor can receive, sends the feedback signal of shutting down for PCB main control module promptly, PCB main control module receives the feedback signal after, cuts off the power, and PCB relay module is when no power, and the machine that lifts stops to continue to go up and down simultaneously. The PCB main control module and the photoelectric sensor can be in wired connection or wireless connection.

In order to facilitate the installation of the reflector 11 and the photosensor 12, in an implementation scheme, the cross section of the reflector is L-shaped, one surface of the L-shape serves as a rectangular reflecting surface, half of the height of the reflector is allowed to be the height deviation of the platforms on two sides, and the other surface serves as a mounting surface and is fixed on the side end surface of the platform through screws. The photoelectric sensor can be set to be cylindrical, the emission is a point light source, the outer wall surface of the sensor is sleeved with a mounting bracket, the section of the mounting bracket is L-shaped, one side of the mounting bracket is provided with a circular hole for accommodating the sensor, and the other side of the mounting bracket is used as a mounting surface and fixed on the other side end surface of the platform. It should be noted that the shape of the photosensor is not limited to a cylindrical shape and a rectangular shape, and the light emitting form of the photosensor may be laser light and infrared light, and may have 2 forms of visible light and invisible light, which is not limited herein. In addition, a light spot sensor can be arranged to emit scattered light of a sector surface, the scattered light can at least completely cover the opposite rectangular reflector in an initial state, the wider the covering surface is, the larger the allowable error height is, when the scattered light cannot cover the reflector, or the reflector exceeds one half of the surface and is not covered, so that the situation that the heights of the lifting platforms on the two sides are greatly deviated is shown.

Referring to fig. 3, the PCB relay module includes a PCB base plate including an input terminal 21, an output terminal 22, and a plurality of sets of encapsulated relays 23 disposed between the input terminal and the output terminal. The input end and the output end of the PCB bottom plate both comprise a plurality of wiring terminals arranged side by side, the wiring terminals of the input end 21 are connected with external control contacts, for example, an external power supply can be connected, control button contacts (such as an ascending button, a descending button, a locking button, a master-slave machine switching button and the like) or contacts of other external control systems, the power supply of all the buttons is controlled by a controllable contact power switch of a PCB main control module, when the external control system happens, the main control module cuts off a button power supply to enable all the buttons to be invalid, the wiring terminals of the output end 22 are connected with components to be controlled, for example, a gas circuit electromagnetic valve coil of a lifting machine, a coil of an oil circuit electromagnetic valve, a control coil of a two-way electromagnetic valve, a control coil of a motor contactor and the like, and the wiring terminals are.

Every group relay 23 includes a plurality of normally open contacts and a plurality of normally closed contact, in this embodiment, with four group relays, four groups the relay sets up side by side, and every group relay is two normally open contacts, and two normally closed contacts are the example, and the corresponding control of input and output is realized to the contact interlocking mechanism between the multiunit relay, and the output activation that corresponds the difference is realized at last through 4 group relay normally open after the input of difference is put through, mutual interlocking between the normally closed contact, finally reaches functions such as rising, decline, the locking of controlling equipment waiting to control respectively. The multiple sets of relays include current relays and delay relays. The interlocking among the relays is realized by wiring from the PVB base plate, and the relays are connected with the input terminals and the output terminals through lines. Wherein, the relay bottom is inserted the trompil on the PCB bottom plate through the contact pin after, through soldering tin welded fastening.

According to the traditional relay on the conventional PCB, due to the fact that the structure of the relay is few, the same current contacts are few, and more sets of relays are required to be matched together when the same function is realized under the condition that the number of the relay contacts is few, so that synchronous interlocking of multiple sets of contacts is not easy to realize. The PCB relay module comprises an input end and an output end, wherein the input end of the relay module is connected with a control button, the power supply of the control button is controlled by a controllable contact switch of the PCB main control module, and the output end of the relay module is connected with a control coil of a component to be controlled.

In addition, the traditional relays on the PCB base plate are basically black or relays with other colors, and when the relays have faults, a professional is required to judge the faults.

Be provided with the LED pilot lamp on the input or output line of relay, the pilot lamp sets up in the translucent cover, makes things convenient for the operator to the judgement of abnormity, and operating personnel accessible pilot lamp observes the action sequence and makes unusual preliminary judgement.

The operation of the relay according to the present invention will be described with reference to fig. 4.

Four groups of relays K1, K2, K3 and K4 are arranged between the input end J1 and the output end J2. K1, K2, K3 and K4 are two normally open two normally closed contacts, and K4 is a time delay relay.

The pins 9 and 10 of the input end J1 are connected with the normally open contact of the button 1, the K1 relay coil is electrified after the button is triggered, the AC2 and the AC-2 contact are closed, thus the pins 1 and 2 of the J1 are communicated with the pins 11 and 12 of the J2, the pin 1 and 2 of the J1 in the circuit are connected with the AC24V, the pin 11 and 12 of the J2 are connected with the control coil of the motor AC contactor, the pin 24V reaches the pin 3 or the pin 5 of the J2 after the other group of normally open contacts of the K1 are closed (for example, determined by a son-mother knob K2 of a lifter), the two-way electromagnetic valve is triggered, and the button 1 can control the motor contactor and the two-way electromagnetic valve, so that the motor is controlled. 3 of input J1, 4 the normally open contact of pin connection knob 2, K3 relay coil gets electric after the knob triggers, 2 group normally closed contact (B, C) switch to 2 normally open contact (A, D), thereby switch output J2 3, 4 and 7, 8 these 2 way solenoid valve control of this output J2 reach 5, 6 and 9, 10 these 2 way solenoid valve control, thereby realize the switching between the gas circuit of master and slave machine and the two-way valve, knob 2 is with regard to the switching of control master and slave machine. The 5, 6 pins of input J1 connect the normally open contact of button 3, and K2 relay coil gets electric after the button triggers, and 2 group normally open contact switch-ons, 1 pin of J2 gets electric like this, and 3 pins or 5 pins (for example by the primary and secondary knob K2 decision of machine of lifting) of J2 get electric to control oil return solenoid valve and two-way solenoid valve, thereby realize that the machine of lifting descends to safe latched position locking. Pins 7 and 8 of an input end J1 are connected with 1 group of normally open contacts of a button 4, pins 8 and 11 are connected with the other group of normally open contacts of the button 4 (pin 8 is a common point of pin 7 and pin 11), after the button is triggered, a coil of a K4 relay is electrified (can be a software delay of a delay relay or a series controller), at the moment, a 24V (24V) of a pin 11 of an input end J1 reaches a coil of the K1 through a normally closed contact of the K4 (delay connection and no action at the moment), a lifter rises (the same principle as that of triggering of an ascending button), after the delay of a delay relay K4 (software delay is adopted), the normally closed contact controls a K1 coil to be powered off and stop rising, 2 groups of normally open contacts are connected, one group of the normally closed contacts triggers the K2 so as to trigger descending locking, and the other group of pins 7 or 9 (determined by a knob K2 of the lifter) reaching an output end J2 to, the safety is opened, the locking is released, so that the lifting machine descends but is not locked, and the button 4 enables the lifting machine to ascend firstly and descend after the delay time is reached. Pins 13 and 14 of the input terminal J1 are connected with the filter rectification power supply 25, and 1 group of direct current 24V rectification filter power supplies are provided for the outside.

The PCB main control module is integrated with a power conversion interface, a TTL level interface, an input/output interface, a programmable main control MCU chip, a display screen and a wireless communication chip, wherein the power conversion interface supplies AC to DC power to supply power to the PCB main control module and the PCB relay module, the TTL level interface is connected with peripheral equipment to acquire relevant information of the equipment, the main control MCU chip is used for operating data, the MCU chip is a chip with PLC (programmable logic control) function and integrated with an OLED screen to realize man-machine interaction with the main control module, the display screen provides a visual interface to display current operating state data and also fault data, the wireless communication chip is used for sending the operating state data and the fault data of the equipment to a cloud server, and the wireless communication chip preferably selects a WiFi chip, other modules such as GSM modules may also be used.

The lifting button is pressed, the main control module detects that no abnormal alarm exists outside, the button is powered on, the lifting machine access supplies power to a coil of the main contactor of the lifting machine, so that the motor works, meanwhile, the coil of the bidirectional electromagnetic valve is also switched on through contact interlocking among different relays, and the lifting machine rises.

When a fault occurs, the fault code, the fault time and the customer information are uploaded to the cloud server in real time through the WiFi chip on the PCB main control module, and the server-side software pushes mails and short messages to service personnel in charge of the customer to know the situation at the first time and provide technical support after receiving the data.

In order to improve the safety, after the PCB main control module detects a descending instruction triggered by the lifting machine, the lifting machine is set to ascend for a short distance first, and then the safety lock is guaranteed to be opened and then descend. The one-key descending operation is realized by adopting a mode of automatically ascending for a certain time and then descending after a descending button is pressed, the operation is realized by a software logic algorithm, and the ascending time can be set in a PCB intelligent module through the operating button and displayed on an OLED screen. The anti-roll function can be fully implemented during the raising, lowering and locking processes.

Since the height of the reflector is the error range, in some cases, in order to expand the allowable error range, the height difference data is expanded by setting a delay for the PCB main control module, so that the error range can be expanded. Wherein, the time delay can be realized by programming the chip.

The running process data of the lifter, such as the running time of the motor (acquired through the contact closing time of the main contactor) and the lifting times (acquired through an additionally installed mechanical switch) and other data information are uploaded to the cloud end in real time through the PCB intelligent module, if the network is interrupted, the accumulated value of the process data can be stored in the FLASH of the PCB main control module, and the process data is uploaded after the network replies.

Other functions of protecting operators, such as a foot-pressing prevention function and highest position limitation for protecting the car roof from being damaged, can be realized through the logic operation of the PCB main control module, and the function modules are also preset in the PCB main control module and are selected to be started or not through a matched operation interface. More function expansion can also be realized by programming the PCB main control module.

The PCB-based main control module disclosed by the invention can be connected with different interfaces according to practical application, is suitable for sharing a plurality of elevators in the current market, reduces repeated development and design cost, is easy to expand complex functions, can be realized by adding peripheral sensors and programming, increases the stability through software filtering and anti-shaking, can realize advanced prevention on the conditions of vehicle damage and people injury, performs cloud analysis on process operation data, and provides data support for advanced preventive detection and maintenance. The system of the invention also enables intelligent interconnection to be widely applied in the automobile aftermarket.

The specific working process of the invention is as follows:

the photoelectric sensor arranged on one side of a lifting platform of the lifting machine and a reflector plate corresponding to the photoelectric sensor on the other side of the lifting platform detect whether the height difference of 2 platforms exceeds the range at the moment of a lifting or descending stage, if the PCB main control module detects the out-of-range, the power supply of a button is cut off after filtering waves and anti-shaking confirm that the out-of-range does occur indeed, the coil breakpoints of a lifting motor contactor controlled by a PCB relay module are caused by the cut-off of the power supply to turn off a motor, and then a control coil of a bidirectional electromagnetic valve is cut off by interlocking contacts of a relay, so that any operation carried out by the button is disabled under the condition, even if the lifting button is still pressed at the moment, the condition that an operator carelessly falls to cause property loss and casualty accidents, and the lifting, the descending and locking buttons are disabled at the moment, preventing further malfunction. At the moment, the PCB main control module controls the acousto-optic alarm to give out a side-tipping alarm, an alarm code and a reset operation prompt are also displayed on an OLED screen integrated with the PCB main control module, and an operator can continue to perform subsequent operation after resetting until the elevator returns to the lowest position and resets to start a new operation cycle.

Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.