CN216434718U

CN216434718U - Pump operation safety monitoring device

Info

Publication number: CN216434718U
Application number: CN202123013432.0U
Authority: CN
Inventors: 王祯鑫; 李海洋
Original assignee: Dalian Institute of Chemical Physics of CAS
Current assignee: Dalian Institute of Chemical Physics of CAS
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-05-03
Anticipated expiration: 2031-12-03

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

Pump operation safety monitoring device

Technical Field

The utility model belongs to the technical field of the safety monitoring circuit, specifically speaking is a pump class operation safety monitoring device circuit.

Background

Pump-type devices have numerous applications in laboratories and factory workshops and are indispensable components. However, the use environment is relatively severe, so that the temperature of the shell is increased, the friction and the vibration are aggravated, and the consequence of vicious circle is that a fire disaster is caused by high-temperature fire of the motor coil or an accident occurs due to displacement caused by severe vibration, so that the operation state of the pump device is a key influence factor for the safe operation of the system.

At present, in the existing scheme, a mechanical balance weight is basically used as a vibration amplitude limiting switch, a bimetallic strip is used as a temperature detection switch, temperature and vibration signals cannot be monitored linearly, and remote monitoring cannot be carried out.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pump class operation safety monitoring device circuit to overcome above-mentioned battery management system's defect. The utility model relates to a pump class operation safety monitoring device circuit can real-time supervision pump class device vibration amplitude, shell temperature rise to judge in advance according to given data, judge pump class device safe state, forward real-time data to the host computer through the wireless network module simultaneously and carry out centralized management, improve the equipment security level of laboratory and workshop.

The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: a pump operation safety monitoring device comprises: 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 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 SSR 1;

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

the SSR1 is connected with the pump power supply interface J1 and the power supply module M2 in sequence.

The operational amplifier unit comprises an operational amplifier U3A and an operational amplifier U3B which are connected in sequence;

the reverse input end of the operational amplifier U3B is grounded through a resistor R1 and is also connected with the output end of the operational amplifier U3B through a resistor R2, the positive input end of the operational amplifier U3B is connected with the positive pole of the linear vibration sensor S, and the negative pole of the linear vibration sensor S is grounded;

the inverting input end of the operational amplifier U3A is connected with the output end of the operational amplifier U3B through a resistor R3, the inverting input end of the operational amplifier U3A is also connected with the output end of the operational amplifier U3A through a resistor R4 and a capacitor C1 which are connected in parallel, and the positive input end of the operational amplifier U3A is grounded;

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

The IO port of the microcontroller U1 is connected with the data port of the AD converter U2; the first IO pin and the second IO pin of the microcontroller U1 are connected to a conversion completion terminal BUSY and a conversion start terminal RC of the AD converter U2, respectively.

And a communication port of the microcontroller U1 is connected with a communication port of the wireless network to serial port module M1.

The third IO pin of microcontroller U1 is connected with digital temperature sensor U4's output, digital temperature sensor U4's supply terminal is connected with the power, still is connected with digital temperature sensor U4's output through resistance R6.

A fourth IO pin of the microcontroller U1 is connected with one end of a coil of the SSR1, and the other end of the coil is connected with a power supply; two contacts of the solid-state relay SSR1 are respectively connected with a live wire of a mains supply and a live wire end of a pump power supply interface J1.

And the protective ground end and the zero line end of the pump power supply interface J1 are respectively connected with the protective ground end and the power supply negative input end of the power module M2.

The positive power supply input end of the power supply module M2 is connected with a live wire of a mains supply, and the positive voltage output end and the negative power output end of the power supply module M2 serve as power supplies for the safety monitoring device.

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

The utility model has the following beneficial effects and advantages:

1. the utility model discloses a linear vibration sensor monitors vibration signal, carries out analog-to-digital conversion to vibration signal by the AD converter to with signal feedback to microcontroller.

2. The utility model discloses a digital temperature sensor monitors the shell temperature to feed back to microprocessor through data bus.

3. The utility model discloses a wireless network changes serial port module and sends real-time supervision data to the host computer, carries out data centralized management and alarm monitoring.

4. The utility model discloses can carry out simple connection on the basis of not destroying current wiring structure, make pump class device have long-range safety monitoring ability.

Drawings

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

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

As shown in fig. 1, 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, M2 is an AC220 to 5V power 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 discloses a microcontroller U1, AD converter U2, operational amplifier U3A, U3B, digital temperature sensor U4, wireless network changes serial port module M1, AC220 changes 5V power module M2, solid state relay SSR1, pump power supply interface J1, linear vibration sensor S, feedback resistance R1, R2, R3 and R4, matching resistance R5, pull-up resistance R6, feedback electric capacity C1 constitutes.

The microcontroller U1 controls the input end of the solid-state relay SSR1 to be switched on and off, and further controls the pump power supply interface J1 to be switched on and off through the output end of the solid-state relay SSR 1.

The vibration signal generated by the linear vibration sensor S is subjected to primary amplification by an operational amplifier U3B, and then subjected to secondary amplification by a computational amplifier U3A, and then enters an AD converter U2 for analog-to-digital conversion, and the digital signal converted by the AD converter U2 is fed back to the microcontroller U1.

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

The microcontroller U1 connects the data to be transmitted to the wireless network to serial port module M1 through a serial interface and transfers the data to the upper computer.

The AC220 live line is connected to a first port of the AC220 to 5V power module M2 while being connected to a second port of the solid state relay SSR 1. The first port of the solid state relay SSR1 is connected to a first port of the pump power interface J1. The AC220 neutral is connected to a second port of the AC220 to 5V power module M2, while being connected to a third port of the pump power interface J1. The AC220 protection ground is connected to the third port of the AC220 to 5V power module M2, while being connected to the second port of the pump power interface J1. The fourth port of the AC 220-to-5V power supply module M2 outputs 5V power supply and is connected to all 5V power supply ports of the system, and the fifth port of the AC 220-to-5V power supply module M2 outputs 0V power supply and is connected to all power 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 5 th pin of the operational amplifier U3B. A first port of the feedback resistor R1 is connected to the power supply return port. The second port of the feedback resistor R1 is connected to the 6 th 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 7 th 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 2 nd pin of the operational amplifier U3A, and also connected to the first port of the feedback resistor R4, and also connected to the first port of the feedback capacitor C1. The second port of the feedback resistor R4 is connected to the 1 st pin of the operational amplifier U3A, and also connected to the second port of the feedback capacitor C1, and also 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 connected to the power return port, respectively. The VDIG pin, the VANA pin, and the BYTE pin of the AD converter are connected to the 5V power supply port, respectively. The pins D0 to D15 of the AD converter are connected to the pins 37 to 30 and 18 to 25 of the microprocessor U1, respectively. The BUSY pin of the AD converter is connected to the 12 th pin of the microprocessor U1. The RC pin of the AD converter is connected to pin 13 of the microprocessor U1.

The 2 nd pin of the wireless network to serial port module M1 is connected to the 5 th pin of the microprocessor U1. The No. 3 pin of the wireless network serial port module M1 is connected to the No. 7 pin of the microprocessor U1.

The 2 nd pin of the digital temperature sensor U4 is connected to the 3 rd pin of the microprocessor U1 and to the first port of the pull-up resistor R6. The second port of pull-up resistor R6 is connected to the 5V supply port.

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

Example 1

A pump operation safety monitoring device circuit is characterized in that an STC series STC12C5A60S2 microcontroller is adopted in U1, an ADS8505 digital-to-analog converter is adopted in U2, an AD8066 operational amplifier is adopted in U3A and U3B, a DS18B20 single-bus digital temperature sensor is adopted in U4, a USR-C215B wireless network to serial port module is adopted in M1, an HLK-PM 01220 to 5V power supply module is adopted in M2, the C1 is selected to be 100pF, the R1 is selected to be 1 Komega, the R2 is selected to be 10 Komega, the R3 is selected to be 2 Komega, the R4 is selected to be 10 Komega, the R5 is selected to be 100 omega, and the R6 is selected to be 10 Komega.

After the linear vibration sensor S monitors a vibration signal, the vibration signal is amplified by two stages of operational amplifiers U3A and U3B and enters an AD converter U2 through a matching resistor R5, and the converted data is fed back to a microcontroller U1. After the numerical temperature sensor monitors a temperature signal, the temperature signal is fed back to the microcontroller U1 through a data bus. Microcontroller U1 compares data and given data, if the monitoring result surpassed the given scope, then send data to the host computer through wireless network commentaries on classics serial module M1 and report to the police and show and file to whether unified configuration information control pump class device need carry out the outage processing by the host computer, if need send the outage instruction, wireless network commentaries on classics serial module M1 passes through the serial ports with the instruction and forwards microprocessor U1, microprocessor U1 will control solid state relay SSR1 and stop the output, and then control pump power supply interface J1 and AC220 live wire disconnect-connection, make pump class device stop the operation.

The utility model discloses shell temperature rise and vibration when device circuit embeds treater can gather pump class device operation in real time carries out the 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.

Claims

1. A pump operation safety monitoring device is characterized by comprising: 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;

2. The device as claimed in claim 1, wherein the operational amplifier unit comprises an operational amplifier U3A and an operational amplifier U3B connected in series;

3. The pump operation safety monitoring device according to claim 1, wherein the IO port of the microcontroller U1 is connected to the data port of the AD converter U2; the first IO pin and the second IO pin of the microcontroller U1 are connected to a conversion completion terminal BUSY and a conversion start terminal RC of the AD converter U2, respectively.

4. The device as claimed in 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. The device as claimed in claim 1, wherein the third IO pin of the microcontroller U1 is connected to the output terminal of the digital temperature sensor U4, and the power supply terminal of the digital temperature sensor U4 is connected to the power supply and further connected to the output terminal of the digital temperature sensor U4 through a resistor R6.

6. The pump operation safety monitoring device according to claim 1, wherein a fourth IO pin of the microcontroller U1 is connected to one end of a coil of the SSR1, and the other end of the coil is connected to a power supply; two contacts of the solid-state relay SSR1 are respectively connected with a live wire of a mains supply and a live wire end of a pump power supply interface J1.

7. The device as claimed in claim 1, wherein the protection ground and the neutral line of the pump power supply interface J1 are respectively connected to the protection ground and the negative power supply input of the power module M2.

8. The pump operation safety monitoring device of claim 1, wherein the positive power supply input terminal of the power module M2 is connected to the live line of the mains power supply, and the positive voltage output terminal and the negative power output terminal of the power module M2 are used as power supplies for supplying power to the safety monitoring device.

9. The device for monitoring the operation safety of pumps as claimed in claim 1, wherein the positive voltage output end of the power module M2 is respectively connected with the power supply end of the microcontroller U1, the power supply end of the AD converter U2, the power supply end of the digital temperature sensor U4, the power supply end of the wireless network serial-to-serial module M1 and the power supply end of the solid state relay SSR1, and the negative power output end is grounded.