Self-resetting device and detection method for electric shock and dead halt of suction dryer

文档序号：1240797 发布日期：2020-08-18 浏览：9次中文

阅读说明：本技术 一种吸干机晃电死机自复位装置及检测方法 (Self-resetting device and detection method for electric shock and dead halt of suction dryer ) 是由李洪东吉宏宇郑吉彪李傲高巍王学双石东凯左桐瑀刘俊伯李泽民于 2020-04-02 设计创作，主要内容包括：本发明属于电源质量检测技术领域,具体涉及一种吸干机晃电死机自动恢复装置及检测方法；复位装置包括电源电压晃电检测系统和吸干机晃电死机恢复系统；电源电压晃电检测系统包括电压传感器、PLC可编程控制器和显示器；吸干机晃电死机恢复系统包括吸干机状态检测电路、吸干机状态指示输出电路；检测方法包括步骤：1、电源电压晃电检测系统检测；2、进行吸干机运行状态检测；3、通过PLC可编程控制器输出信号来控制吸干机电路板状态指示灯,指示吸干机运行状态；4、对晃电导致的死机现象进行自动复位；本发明在出现晃电情况后,系统自动进行诊断,并自动断电复位,避免了由于晃电导致试验室压缩空气停止供应的情况发生,保证试验室设备的正常运行。(The invention belongs to the technical field of power supply quality detection, and particularly relates to an automatic recovery device and a detection method for electric shock and dead halt of a suction drier; the reset device comprises a power supply voltage interference detection system and a suction drier interference dead halt recovery system; the power supply voltage interference detection system comprises a voltage sensor, a PLC (programmable logic controller) and a display; the electric shock and crash recovery system of the suction dryer comprises a suction dryer state detection circuit and a suction dryer state indication output circuit; the detection method comprises the following steps: 1. detecting by a power supply voltage interference detection system; 2. detecting the running state of the sucking dryer; 3. the circuit board state indicator lamp of the suction dryer is controlled by the output signal of the PLC to indicate the running state of the suction dryer; 4. automatically resetting the dead halt phenomenon caused by the electricity interference; according to the invention, after the electricity interference condition occurs, the system automatically diagnoses and automatically powers off and resets, so that the condition that the supply of compressed air in the test chamber is stopped due to the electricity interference is avoided, and the normal operation of the test chamber equipment is ensured.)

1. The utility model provides a inhale dry quick-witted electricity of shaking and crash from resetting means which characterized in that: the system comprises a power supply voltage interference detection system and a suction drier interference and dead halt recovery system;

the power supply voltage interference detection system comprises a voltage sensor, a PLC (programmable logic controller) and a display;

the voltage sensor is connected with the PLC in an RS485 communication mode, and the display is communicated with the PLC through RS485 communication;

the electric shock and dead halt recovery system of the suction dryer comprises a suction dryer state detection circuit and a suction dryer state indication output circuit;

the sucking machine state detection circuit is used for connecting the collected signals to an input interface of a PLC (programmable logic controller), and an output interface of the PLC is connected with a sucking machine state indication output circuit.

2. The electric dazzling and dead halt self-resetting device of the suction drier according to claim 1, which is characterized in that:

the suction drier state detection circuit mainly comprises a photoelectric coupler, a current-limiting resistor R1 and a power supply;

the sucking dryer state indicating output circuit mainly comprises a current limiting resistor R2 and a sucking dryer circuit board state indicating lamp;

the anode of the input end of the photoelectric coupler is connected to a control circuit of the anode of the circuit board state indicator lamp of the suction dryer, and the cathode of the input end of the photoelectric coupler is connected with the GND of the control board of the suction dryer;

the collector of the output end of the photoelectric coupler is connected to VCC of a power supply of the PLC through a current-limiting resistor R2, the emitter of the output end of the photoelectric coupler is connected to the input end of the PLC, and the common end of the input of the PLC is connected to GND of the power supply of the PLC;

the common end of the PLC is connected with VCC of a power supply, the output interface of the PLC is connected with the anode of the circuit board state indicator lamp of the suction dryer through a current-limiting resistor R2, and the cathode of the circuit board state indicator lamp of the suction dryer is connected with GND of the power supply of the PLC.

3. The self-resetting detection method for the electric shock and death of the suction drier as claimed in claim 1, characterized by comprising the following steps:

firstly, detecting by a power supply voltage interference detection system;

secondly, collecting the on and off of a circuit board state indicator lamp of the suction dryer, detecting the running state of the suction dryer, and analyzing the current running state of the suction dryer;

thirdly, a circuit board state indicator lamp of the suction dryer is controlled by a PLC output signal to indicate the running state of the suction dryer;

and finally, after the running state of the sucking drying machine is analyzed, the dead halt phenomenon caused by the electric shock is automatically reset.

4. The self-resetting detection method for the electric shock and death of the suction drier according to claim 3, characterized in that:

the power supply voltage interference detection system carries out detection and specifically comprises the following steps:

step 1: powering up a power supply voltage interference detection system;

step 2: detecting whether the voltage is larger than the rated voltage by 380V-10%;

and 3, step 3: judging whether the voltage of a power supply voltage interference detection system is within the range of 380V +/-10%;

and 4, step 4: if the voltage fluctuation range of the power supply voltage interference detection system is within the range of 380V +/-10%, the PLC considers that the system voltage is normal, and then the step 3 is returned to for continuous judgment; and if the voltage fluctuation range of the power supply voltage interference detection system is not within the range of 380V +/-10%, the PLC considers that the interference phenomenon occurs in the system, and the interference times are + 1.

5. The self-resetting detection method for the electric shock and death of the suction drier according to claim 3, characterized in that:

the circuit board state indicator lamp of the suction dryer is turned on and off to collect, the running state of the suction dryer is detected, and the current running state of the suction dryer is analyzed, wherein the specific contents are as follows:

collecting the on and off of a circuit board state indicator lamp of the suction dryer, analyzing the current running state of the suction dryer, actually converting a level signal for controlling the circuit board state indicator lamp of the suction dryer into a 24V level signal which can be identified by a PLC (programmable logic controller), and connecting the signal to the input end of the PLC;

the controller needs to judge whether the state signal of the suction dryer can be received or not, and if the state signal of the suction dryer cannot be received, the phenomenon that the suction dryer is subjected to electric shock and dead halt is indicated;

if the signal received by the controller is a square wave signal, the controller indicates that the suction dryer is in a standby state at present, the suction dryer is in a normal state, and the phenomenon of electric shock and dead halt does not occur;

if the signal received by the controller is always high level, the controller indicates that the suction dryer is in a running state at present, the suction dryer is in a normal state, and the phenomenon of electricity shaking and dead halt does not occur.

6. The self-resetting detection method for the electric shock and death of the suction drier according to claim 3, characterized in that:

the circuit board state indicating lamp of the suction drier is controlled by the output signal of the PLC to indicate the running state, and the specific content is as follows:

the PLC is used for processing the signals received by the suction dryer, and the output port of the PLC is connected with a corresponding current-limiting resistor R2 in series to control a circuit board state indicator lamp of the suction dryer for indicating the current state of the suction dryer.

7. The self-resetting detection method for the electric shock and death of the suction drier according to claim 3, characterized in that:

after the running state of the sucking drier is analyzed, the dead halt phenomenon caused by the electric shock is automatically reset; the specific contents are as follows:

if the controller judges that the power supply voltage interference detection system has interference phenomenon and the suction machine has dead halt phenomenon, the PLC can judge that the suction machine has dead halt caused by interference; at the moment, the main power supply contactor of the drying machine is disconnected, and after receiving a contactor disconnection signal, the main power supply contactor is electrified again, so that the automatic power-off reset of the drying machine is realized.

Technical Field

The invention belongs to the technical field of power supply quality detection, and particularly relates to an automatic recovery device and a detection method for electric shock and dead halt of a suction drier.

Background

A power assembly test room is provided with a multi-minnik suction dryer, the phenomenon of electricity shaking and dead halt often occur, a check valve in the suction dryer can not be opened due to dead halt, compressed air generated by a compressor can not be supplied to equipment of the test room, and a test can not be normally carried out.

In order to prevent the phenomenon of electric shock and dead halt, a UPS (uninterrupted Power supply) can be used, but the limit of the load capacity is met, and a high-power USP (Universal Power supply) is high in price, large in size and inconvenient to install on site. The existing power interference resetting device can only monitor whether the outer net is powered on or not, and can not know whether the suction drier is halted or not, and can not perform an accurate resetting function.

Disclosure of Invention

Dominnik dry absorption machine, the phenomenon of dying of death appears under the condition of shaking electricity, through monitoring electric network voltage, judge whether shaking electricity, judge whether dying of death through detecting the state signal that the dry absorption machine was examined, whether the dry absorption machine takes place the condition of shaking electricity and dying of death, if the condition of shaking electricity and dying of death takes place, through the contactor of control responsible for power-on, make its outage, make it power-on again at interval 3S clock, can realize that the dry absorption machine shakes the electricity and dies from resetting function, the compressed air that has avoided the compressor to produce can not supply the equipment of laboratory, the condition that can't normally carry out the test takes place.

The technical scheme of the invention is as follows:

the current working state of the suction dryer is judged to be a dead halt state, a standby state or a running state by detecting a state indicator lamp of the suction dryer and the current voltage of the suction dryer. If the suction drier is in a dead halt state, the suction drier is automatically reset in an automatic power-off and restarting mode.

The invention combines the voltage monitoring device with the state detection circuit, utilizes the PLC programmable controller to analyze and control, and displays the current state through the touch screen.

A self-reset device for the electric shock and dead halt of a suction dryer comprises a power supply voltage electric shock detection system and a suction dryer electric shock and dead halt recovery system;

the power supply voltage interference detection system comprises a voltage sensor, a PLC (programmable logic controller) and a display;

the voltage sensor is connected with the PLC in an RS485 communication mode, and the display is communicated with the PLC through RS485 communication;

the electric shock and dead halt recovery system of the suction dryer comprises a suction dryer state detection circuit and a suction dryer state indication output circuit;

The suction dryer state detection circuit in the technical scheme mainly comprises a photoelectric coupler, a current-limiting resistor R1 and a power supply;

the sucking dryer state indicating output circuit mainly comprises a current limiting resistor R2 and a sucking dryer circuit board state indicating lamp;

A self-reset detection method for electric shock and dead halt of a suction drier comprises the following steps:

firstly, detecting by a power supply voltage interference detection system;

thirdly, a circuit board state indicator lamp of the suction dryer is controlled by a PLC output signal to indicate the running state of the suction dryer;

and finally, after the running state of the sucking drying machine is analyzed, the dead halt phenomenon caused by the electric shock is automatically reset.

In the technical scheme, the power supply voltage interference detection system carries out detection and specifically comprises the following steps:

step 1: powering up a power supply voltage interference detection system;

step 2: detecting whether the voltage is larger than the rated voltage by 380V-10%;

and 3, step 3: judging whether the voltage of a power supply voltage interference detection system is within the range of 380V +/-10%;

The circuit board state indicator lamp of the suction dryer is turned on and off to collect, the running state of the suction dryer is detected, and the current running state of the suction dryer is analyzed, wherein the specific contents are as follows:

The circuit board state indicating lamp of the suction drier is controlled by the output signal of the PLC to indicate the running state, and the specific content is as follows:

After the running state of the sucking drier is analyzed, the dead halt phenomenon caused by the electric shock is automatically reset; the specific contents are as follows:

The invention has the beneficial technical effects that:

the existing power-off reset device can only monitor whether the outer net is powered off or not, cannot know whether the suction drier is dead or not, and cannot perform an accurate reset function; the system automatically diagnoses and automatically powers off and resets after the electric power interference occurs in the electric power interference self-resetting device of the suction dryer, thereby avoiding the condition that compressed air in a test chamber stops being supplied due to the electric power interference and ensuring the normal operation of the equipment in the test chamber.

Drawings

FIG. 1 is a block diagram of a self-resetting device for a power-on and power-off of a suction dryer according to the present invention;

FIG. 2 is a schematic diagram of input and output circuits of a power supply voltage interference detection system and a dry absorption machine interference and dead halt recovery system;

FIG. 3 is a flow chart of a self-resetting detection method for electric shock and dead halt of the suction dryer;

Detailed Description

The invention will be further explained with reference to the accompanying drawings:

the method comprises the steps of collecting the on and off of a circuit board state indicator lamp of the suction dryer, and analyzing the current running state of the suction dryer; the circuit board state indicator lamp of the original suction drier is controlled by the output signal of the PLC, and is used for indicating the running state; after the running state of the sucking drier is analyzed, the dead halt phenomenon caused by the electric shock is automatically reset.

the power supply voltage interference detection system comprises a voltage sensor, a PLC (programmable logic controller) and a display;

the voltage sensor is arranged at the position of a power supply of the drying machine and is connected with the PLC in an RS485 communication mode, and the display is communicated with the PLC through the RS485 communication mode to display the current voltage value in real time.

The electric shock and crash recovery system of the suction dryer comprises a suction dryer state detection circuit and a suction dryer state indication output circuit;

the suction dryer state detection circuit is used for connecting the collected signals to an input interface of the PLC, and an output interface of the PLC is connected with the suction dryer state indication output circuit.

The suction drier state detection circuit mainly comprises a photoelectric coupler, a current-limiting resistor R1 and a power supply; disconnecting a control circuit of the circuit board state indicator lamp of the original suction dryer, connecting the anode of the input end of a photoelectric coupler to a control circuit of the anode of the circuit board state indicator lamp of the original suction dryer, and connecting the cathode of the input end of the photoelectric coupler to GND (ground) of a control board of the suction dryer; the collector of the output end of the photoelectric coupler is connected to VCC of a power supply of the PLC through a current-limiting resistor R2, the emitter of the output end of the photoelectric coupler is connected to the input end of the PLC, and the common end of the input of the PLC is connected to GND of the power supply of the PLC.

The sucking drier state indicating output circuit mainly comprises a current limiting resistor R2 and a sucking drier circuit board state indicating lamp; the common end of the PLC is connected with VCC of a power supply, the output interface of the PLC is connected with the anode of the circuit board state indicator lamp of the suction dryer through a current-limiting resistor R2, and the cathode of the circuit board state indicator lamp of the suction dryer is connected with GND of the power supply of the PLC.

A self-reset detection method for electric shock and dead halt of a suction drier comprises the following steps:

firstly, a power supply voltage interference detection system carries out detection, and the method specifically comprises the following steps:

step 1: powering up a power supply voltage interference detection system;

step 2: detecting whether the voltage is larger than the rated voltage by 380V-10%;

and 3, step 3: judging whether the voltage of a power supply voltage interference detection system is within the range of 380V +/-10%;

Secondly, collecting the on and off of a circuit board state indicator lamp of the suction dryer, detecting the running state of the suction dryer, and analyzing the current running state of the suction dryer; the specific contents are as follows:

detecting whether the voltage is larger than the rated voltage by 380V-10%;

Thirdly, a circuit board state indicator lamp of the suction drier is controlled by a PLC output signal to indicate the running state; the specific contents are as follows:

the PLC processes the received signals of the suction dryer, and the corresponding R2 is connected in series through the output port of the PLC to control the circuit board state indicator lamp of the suction dryer for indicating the current state of the suction dryer.

Finally, after the running state of the sucking dryer is analyzed, the dead halt phenomenon caused by the electricity shaking is automatically reset; the specific contents are as follows:

Referring to fig. 1, the self-resetting device for the electric shock and the dead halt of the suction dryer of the invention takes a Programmable Logic Controller (PLC) as a core controller, collects the power supply voltage of the suction dryer through a voltage sensor and judges whether the electric shock occurs or not; acquiring a state signal of the suction dryer to judge whether the suction dryer is halted or not through the running state detection of the suction dryer, and if the electric shock halt condition occurs, enabling the suction dryer to realize an automatic power-off reset function through a suction dryer electric shock halt recovery system; and displaying the electricity shaking times of the drying machine and the fault record thereof on a display screen by utilizing an RS485 communication mode. In fig. 1, DI denotes a digital input interface, and DO denotes a digital output interface.

Referring to fig. 2, the anode of the circuit board state indicator of the suction dryer is connected to the anode input pin of the photoelectric coupler of the state detection circuit of the suction dryer, the GND of the circuit board of the suction dryer is connected to the GND of the state detection circuit of the suction dryer, and when the circuit board state indicator of the suction dryer emits light, the collection of the state signals of the suction dryer can be realized through the collection circuit.

The output end of the PLC is connected with a current resistor in series to control a circuit board state indicator lamp of the dryer, so that the circuit board state indicator lamp can change according to the change of a state signal of the dryer.

The running state detection of the dryer is used for acquiring a state signal of the dryer to judge whether the dryer is halted, if the electricity shaking halt occurs, the power supply contactor of the dryer is disconnected, and the power supply contactor of the dryer is pulled in for 3 seconds, so that the dryer realizes the power-off self-resetting function. And simultaneously, the current state of the power supply contactor of the drying machine is detected through the operation feedback point of the power supply contactor of the drying machine.

Referring to fig. 3, a self-resetting detection method for electric shock and dead halt of a suction dryer comprises the following steps:

a self-reset detection method for electric shock and dead halt of a suction drier comprises the following steps:

the power supply voltage interference detection system is electrified, 2 seconds of delay are carried out, the power supply voltage is detected, whether the fluctuation range of the power supply voltage is within 380V +/-10% or not is judged, and if the fluctuation range of the power supply voltage is within 380V +/-10%, the power supply voltage is continuously detected; if the fluctuation range of the power supply voltage exceeds 380V +/-10%, the electricity shaking times are plus 1, whether the operation state signal of the suction dryer can be received within 2S or not is judged, and if the normal operation of the suction dryer is detected, whether the fluctuation range of the power supply voltage is within 380V +/-10% or not is continuously detected; if the operation of the dryer is detected to be stopped, starting a power-off self-reset program, delaying for 3S, judging whether a running state signal of the dryer can be received in 2S, and if not, alarming and stopping; if the normal operation of the suction dryer is detected, whether the fluctuation range of the power supply voltage is within 380V +/-10% is continuously detected, and the operation is continuously carried out.

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