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Electromagnetic flowmeter control system and control method based on 485 communication

A technology of electromagnetic flowmeter and control system, which is applied in general control system, control/regulation system, computer control, etc. It can solve the problems of inability to control equipment, data analysis and processing of electromagnetic flowmeter, and easy to cause accidents, etc., to achieve The effect of saving raw materials and cost

Pending Publication Date: 2018-03-16
ZHONGHUAN TIG
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current serial communication of the magnetic flowmeter can only display the specific data received and sent, and cannot further analyze and process the data of the specific electromagnetic flowmeter. Problems such as running out of filling liquid cannot be judged and reminded in time. At the same time, only on-site data can only be viewed and the equipment can not be further controlled. It is easy to waste manpower, material resources and raw material costs, and it is more likely to cause accidents

Method used

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  • Electromagnetic flowmeter control system and control method based on 485 communication
  • Electromagnetic flowmeter control system and control method based on 485 communication

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Embodiment Construction

[0008] The content of the present invention will be described in more detail below in conjunction with the accompanying drawings.

[0009] Such as figure 1 As shown, an electromagnetic flowmeter control system based on 485 communication includes a computer host (model) and a controller. The controller is bidirectionally connected with the valve of the electromagnetic flowmeter through a 4-20mA analog signal.

[0010] Such as figure 2 As shown, the control method includes the following steps,

[0011] 1) Turn on the machine, automatically detect the available serial port and select the serial port, which cannot be changed again after selection, and at the same time automatically detect line faults, alarm in real time, and run with one button after the alarm is restored;

[0012] 2) Set the liquid density parameters, the current filling amount, and the valve opening. After the setting is completed, the valve will be opened automatically;

[0013] 3) Determine whether the te...

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Abstract

The invention relates to an electromagnetic flowmeter control system and control method based on 485 communication. The control system is in bidirectional connection with a controller for a computer through a serial port line and a 485 bus, an electromagnetic flowmeter is in unidirectional connection with the controller, the controller is in bidirectional connection with a valve of the electromagnetic flowmeter through a 4-20 mA analog signal, a parameter is set on the electromagnetic flowmeter control system, a control instruction is sent to the controller according to a 485 communication protocol format, the control instruction is sent to the valve through the controller, and real-time data of the electromagnetic flowmeter is fed back to the electromagnetic flowmeter control system through the controller. The real-time data and the set parameter are compared in real time, the valve is automatically switched on within a specified range, one-key type normal operation is performed, or else a real-time alarm is made, and the valve is automatically switched off. The electromagnetic flowmeter control system has the advantages that under the unmanned conditioned, when the temperature exceeds a boundary and the setting of the parameter is automatically finished, and the valve is switched off automatically, and the electromagnetic flowmeter control system and control method based on 485 communication is safe, saves raw materials and reduces cost; a real-time alarm is made, the adoption of emergency measures is facilitated, and one-button type running is performed after recovery.

Description

technical field [0001] The invention relates to an electromagnetic flowmeter control system, in particular to an electromagnetic flowmeter control system and a control method based on 485 communication. Background technique [0002] With the advent of the information age, all areas of modern society are inseparable from the processing, monitoring and control of data. The current serial communication of the magnetic flowmeter can only display the specific data received and sent, and cannot further analyze and process the data of the specific electromagnetic flowmeter. Problems such as running out of filling liquid cannot be judged and reminded in time. At the same time, only on-site data can only be viewed and the equipment can not be further controlled. It is easy to waste manpower, material resources and raw material costs, and it is more likely to cause accidents. Therefore, it is an inevitable trend of technological development to provide a device that can judge and proc...

Claims

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Application Information

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IPC IPC(8): G05B19/048
CPCG05B19/048
Inventor 彭讷陈会庆牟柯臣皇甫晓蓉
Owner ZHONGHUAN TIG
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