CN216434718U - A safety monitoring device for pump operation - Google Patents

Abstract

The utility model relates to a pump class operation safety monitoring device, include: the system comprises a microcontroller U1, an AD converter U2, an operational amplifier unit, a digital temperature sensor U4, a wireless network-to-serial port module M1, a solid state relay SSR1, a pump power supply interface J1, a linear vibration sensor S and a power supply module M2; the utility model discloses a pump class operation safety monitoring device circuit. The utility model discloses shell temperature rise and vibration when device circuit built-in treater can gather pump class device operation in real time carries out the integrated analysis according to given data, judges the current state of pump class device, gives status data and early warning information, prevents that pump class device from taking trouble operation to cause the conflagration.

Description

A safety monitoring device for pump operation

technical field

The utility model belongs to the technical field of safety monitoring circuits, in particular to a circuit of a pump operation safety monitoring device.

Background technique

Pumps are an integral component of numerous applications in laboratories and factory floors. However, due to the relatively bad use environment, the temperature of the casing increases, the friction increases, and the vibration increases. The consequence of the vicious circle is that the motor coil catches fire at high temperature or causes a displacement accident due to severe vibration. Therefore, the operating state of the pump device is the safe operation of the system. key influencing factors.

At present, the existing solutions basically use the mechanical counterweight as the vibration limit switch and the bimetal as the temperature detection switch, which cannot monitor the temperature and vibration signals linearly, and cannot perform remote monitoring.

Utility model content

The purpose of the utility model is to provide a circuit of a pump operation safety monitoring device to overcome the above-mentioned defects of the battery management system. The utility model designs a circuit of a pump operation safety monitoring device, which can monitor the vibration amplitude of the pump device and the temperature rise of the casing in real time, and make predictions according to the given data to judge the safety state of the pump device. The data is forwarded to the upper computer for centralized management, which improves the equipment security level of the laboratory and production workshop.

The technical scheme adopted by the present invention to achieve the above purpose is: a pump operation safety monitoring device, comprising: a microcontroller U1, an AD converter U2, an operational amplifier unit, a digital temperature sensor U4, and a wireless network to serial port module M1 , solid state relay SSR1, pump power supply interface J1, linear vibration sensor S, power module M2;

The microcontroller U1 is connected with the AD converter U2, the digital temperature sensor U4, the wireless network to serial port module M1, and the solid state relay SSR1;

The AD converter U2 is connected to the operational amplifier unit and the linear vibration sensor S in sequence;

The solid state relay SSR1 is connected to the pump power supply interface J1 and the power supply module M2 in sequence.

The operational amplifier unit includes an operational amplifier U3A and an operational amplifier U3B connected in sequence;

The reverse input terminal of the operational amplifier U3B is grounded through the resistor R1, and is also connected to the output terminal of the operational amplifier U3B through the resistor R2. The forward input terminal of the operational amplifier U3B is connected to the positive pole of the linear vibration sensor S, and the linear vibration sensor S negative ground;

The reverse input terminal of the operational amplifier U3A is connected to the output terminal of the operational amplifier U3B through the resistor R3, and the reverse input terminal of the operational amplifier U3A is also connected to the output terminal of the operational amplifier U3A through the parallel resistor R4 and the capacitor C1. The positive input terminal of the operational amplifier U3A is grounded;

The output end of the operational amplifier U3A is connected to the analog input end of the AD converter U2 through the resistor R5.

The IO port of the micro-controller U1 is connected with the data port of the AD converter U2; the first IO pin and the second IO pin of the micro-controller U1 are respectively connected with the conversion completion terminal BUSY of the AD converter U2, the conversion Begin end RC connection.

The communication port of the microcontroller U1 is connected to the communication port of the wireless network to serial port module M1.

The third IO pin of the microcontroller U1 is connected to the output end of the digital temperature sensor U4, the power supply end of the digital temperature sensor U4 is connected to the power supply, and is also connected to the output end of the digital temperature sensor U4 through the resistor R6.

The fourth IO pin of the microcontroller U1 is connected to one end of the coil of the solid-state relay SSR1, and the other end of the coil is connected to the power supply; Firewire connection.

The protection ground terminal and the neutral line terminal of the pump power supply interface J1 are respectively connected with the protection ground terminal and the negative power supply input terminal of the power supply module M2.

The power supply positive input terminal of the power supply module M2 is connected to the live wire of the commercial power supply, and the positive voltage output terminal and the negative power supply output terminal of the power supply module M2 are used as power supplies to supply power to the safety monitoring device.

The positive voltage output terminal of the power supply module M2 is respectively connected with the power supply terminal of the microcontroller U1, the power supply terminal of the AD converter U2, the power supply terminal of the digital temperature sensor U4, the power supply terminal of the wireless network to serial port module M1, and the power supply terminal of the solid state relay SSR1. The power output terminal is grounded.

The utility model has the following beneficial effects and advantages:

1. The present utility model uses a linear vibration sensor to monitor the vibration signal, and the AD converter performs analog-to-digital conversion on the vibration signal, and the signal is fed back to the microcontroller.

2. The utility model uses a digital temperature sensor to monitor the temperature of the casing, and feeds it back to the microprocessor through the data bus.

3. The utility model adopts the wireless network to serial port module to send the real-time monitoring data to the upper computer for centralized data management and alarm monitoring.

4. The utility model can perform simple connection on the basis of not destroying the existing wiring structure, so that the pump device has the capability of remote safety monitoring.

Description of drawings

Figure 1 is a circuit diagram of a pump operation safety monitoring device.

Detailed ways

The present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 1, where U1 is a microcontroller, U2 is an AD converter, U3A and U3B are operational amplifiers, U4 is a digital temperature sensor, M1 is a wireless network to serial port module, and M2 is an AC220 to 5V power supply module. SSR1 is a solid state relay, J1 is a pump power supply interface, S is a linear vibration sensor, C1 is a feedback capacitor, R1, R2, R3 and R4 are feedback resistors, R5 is a matching resistor, and R6 is a pull-up resistor.

The utility model includes a microcontroller U1, an AD converter U2, operational amplifiers U3A, U3B, a digital temperature sensor U4, a wireless network to serial port module M1, an AC220 to 5V power supply module M2, a solid state relay SSR1, a pump power supply interface J1, and a linear vibration Sensor S, feedback resistors R1, R2, R3 and R4, matching resistor R5, pull-up resistor R6, and feedback capacitor C1.

The microcontroller U1 controls the turn-on and turn-off of the input end of the solid-state relay SSR1, and then controls the turn-on and turn-off of the pump power supply interface J1 through the output end of the solid state relay SSR1.

The vibration signal generated by the linear vibration sensor S is amplified by the operational amplifier U3B in the first stage, and then amplified by the operational amplifier U3A in the second stage, and then enters the AD converter U2 for analog-to-digital conversion. The digital signal converted by the AD converter U2 Feedback to microcontroller U1.

The digital temperature signal converted by the digital temperature sensor U4 is fed back to the microcontroller U1.

The data to be transmitted is connected to the wireless network to serial port module M1 through the serial interface by the microcontroller U1, and forwarded to the upper computer.

The AC220 live wire is connected to the first port of the AC220 to 5V power supply module M2, and is connected to the second port of the solid state relay SSR1 at the same time. The first port of the solid state relay SSR1 is connected to the first port of the pump power supply interface J1. The AC220 neutral line is connected to the second port of the AC220 to 5V power supply module M2, and is also connected to the third port of the pump power supply interface J1. The AC220 protective ground wire is connected to the third port of the AC220 to 5V power supply module M2, and is also connected to the second port of the pump power supply interface J1. The fourth port of the AC220 to 5V power supply module M2 outputs 5V power supply and is connected to all 5V power supply ports of the system. The fifth port of the AC220 to 5V power supply module M2 outputs 0V power supply and is connected to all power supply return ports of the system.

The second port of the linear vibration sensor S is connected to the power return port. The first port of the linear vibration sensor S is connected to the fifth pin of the operational amplifier U3B. The first port of the feedback resistor R1 is connected to the power return port. The second port of the feedback resistor R1 is connected to the sixth pin of the operational amplifier U3B, and is also connected to the first port of the feedback resistor R2. The second port of the feedback resistor R2 is connected to the seventh pin of the operational amplifier U3B, and is also connected to the first port of the feedback resistor R3. The second port of the feedback resistor R3 is connected to the second pin of the operational amplifier U3A, simultaneously connected to the first port of the feedback resistor R4, and simultaneously connected to the first port of the feedback capacitor C1. The second port of the feedback resistor R4 is connected to the first pin of the operational amplifier U3A, simultaneously connected to the second port of the feedback capacitor C1, and simultaneously connected to the first port of the matching resistor R5.

The second port of the matching resistor R5 is connected to the VIN pin of the AD converter U2. The AGND1 pin, AGND2 pin, DGND pin, and CS pin of the AD converter are respectively connected to the power supply return port. The VDIG pin, VANA pin and BYTE pin of the AD converter are respectively connected to the 5V power supply port. The D0 to D15 pins of the AD converter are connected to the 37th pin to the 30th pin and the 18th pin to the 25th pin of the microprocessor U1, respectively. The BUSY pin of the AD converter is connected to the 12th pin of the microprocessor U1. The RC pin of the AD converter is connected to the 13th pin of the microprocessor U1.

The second pin of the wireless network to serial port module M1 is connected to the fifth pin of the microprocessor U1. The third pin of the wireless network to serial port module M1 is connected to the seventh pin of the microprocessor U1.

The second pin of the digital temperature sensor U4 is connected to the third pin of the microprocessor U1 and is connected to the first port of the pull-up resistor R6. The second port of the pull-up resistor R6 is connected to the 5V power supply port.

The fourth port of the solid state relay SSR1 is connected to the 5V power supply port. The third port of the solid state relay SSR1 is connected to the 40th pin of the microprocessor U1.

Example 1

A pump operation safety monitoring device circuit, U1 adopts STC series STC12C5A60S2 microcontroller, U2 adopts ADS8505 digital-to-analog converter, U3A, U3B adopts AD8066 operational amplifier, U4 adopts DS18B20 single bus digital temperature sensor, M1 adopts USR-C215B wireless Network to serial port module, M2 selects HLK-PM01 220 to 5V power supply module, C1 selects 100pF, R1 selects 1KΩ, R2 selects 10KΩ, R3 selects 2KΩ, R4 selects 10KΩ, R5 selects 100Ω, R6 selects the value 10KΩ.

After the linear vibration sensor S monitors the vibration signal, after two-stage amplification by the operational amplifiers U3A and U3B, the matching resistor R5 enters the AD converter U2, and the converted data is fed back to the microcontroller U1. After the temperature signal is detected by the numerical temperature sensor, it is fed back to the microcontroller U1 through the data bus. The microcontroller U1 compares the data with the given data. If the monitoring result exceeds the given range, the data will be sent to the host computer through the wireless network to serial port module M1 for alarm display and archiving, and the host computer will configure the information according to the unified configuration information. Control whether the pump device needs to be powered off. If necessary, send a power off command. The wireless network to serial port module M1 forwards the command to the microprocessor U1 through the serial port. The microprocessor U1 will control the solid state relay SSR1 to stop the output, and then control the The pump power supply interface J1 is disconnected from the AC220 live wire, so that the pump device stops running.

The built-in processor of the device circuit of the utility model can collect the temperature rise and vibration of the casing when the pump device is running in real time, analyze the given data, judge the current state of the pump device, provide status data and early warning information, and prevent the pump device Operation with faults causes fire.

Claims (9)

1. a pump operation safety monitoring device, is characterized in that, comprises: microcontroller U1, AD converter U2, operational amplifier unit, digital temperature sensor U4, wireless network transfers serial port module M1, solid state relay SSR1, pump power supply interface J1, linear vibration sensor S, power module M2; The microcontroller U1 is connected with the AD converter U2, the digital temperature sensor U4, the wireless network to serial port module M1, and the solid state relay SSR1; The AD converter U2 is connected to the operational amplifier unit and the linear vibration sensor S in sequence; The solid state relay SSR1 is connected to the pump power supply interface J1 and the power supply module M2 in sequence. 2. A kind of pump operation safety monitoring device according to claim 1, is characterized in that, described operational amplifier unit comprises operational amplifier U3A and operational amplifier U3B connected in sequence; The reverse input terminal of the operational amplifier U3B is grounded through the resistor R1, and is also connected to the output terminal of the operational amplifier U3B through the resistor R2. The forward input terminal of the operational amplifier U3B is connected to the positive pole of the linear vibration sensor S, and the linear vibration sensor S negative ground; The reverse input terminal of the operational amplifier U3A is connected to the output terminal of the operational amplifier U3B through the resistor R3, and the reverse input terminal of the operational amplifier U3A is also connected to the output terminal of the operational amplifier U3A through the parallel resistor R4 and the capacitor C1. The positive input terminal of the operational amplifier U3A is grounded; The output end of the operational amplifier U3A is connected to the analog input end of the AD converter U2 through the resistor R5. 3. a kind of pump operation safety monitoring device according to claim 1 is characterized in that, the IO port of described microcontroller U1 is connected with the data port of AD converter U2; The IO pin and the second IO pin are respectively connected to the conversion completion terminal BUSY and the conversion start terminal RC of the AD converter U2. 4 . The pump operation safety monitoring device according to claim 1 , wherein the communication port of the microcontroller U1 is connected to the communication port of the wireless network to serial port module M1 . 5 . 5. a kind of pump operation safety monitoring device according to claim 1, is characterized in that, the 3rd IO pin of described microcontroller U1 is connected with the output end of digital temperature sensor U4, and described digital temperature sensor U4 The power supply terminal of the device is connected to the power supply, and is also connected to the output terminal of the digital temperature sensor U4 through the resistor R6. 6. a kind of pump operation safety monitoring device according to claim 1, is characterized in that, the 4th IO pin of described microcontroller U1 is connected with one end of the coil of solid state relay SSR1, and the other end of coil is connected with power supply; The two contacts of the solid state relay SSR1 are respectively connected with the live wire of the mains power supply and the live wire end of the pump power supply interface J1. 7 . The pump operation safety monitoring device according to claim 1 , wherein the protection ground terminal and the neutral line terminal of the pump power supply interface J1 are respectively connected with the protection ground terminal and the power supply negative input terminal of the power supply module M2 . 8 . connect. 8. a kind of pump operation safety monitoring device according to claim 1, is characterized in that, the power supply positive input end of described power supply module M2 is connected with mains power live wire, and the positive voltage output end of power supply module M2 and negative power supply The output terminal is used as a power supply to supply power to the safety monitoring device. 9 . The pump operation safety monitoring device according to claim 1 , wherein the positive voltage output terminal of the power module M2 is respectively connected to the power supply terminal of the microcontroller U1 , the power supply terminal of the AD converter U2 , the digital temperature The sensor U4 power supply terminal, the wireless network to serial port module M1 power supply terminal, the solid state relay SSR1 power supply terminal are connected, and the negative power output terminal is grounded.

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