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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  • Abstract
  • 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...

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 that the computer is bidirectionally connected to the controller through the serial port line and the 485 bus, and the electromagnetic flowmeter is connected to the controller in one direction. The analog signal is bidirectionally connected to the valve of the electromagnetic flowmeter, and the parameters are set on the control system of the electromagnetic flowmeter, and the control command is sent to the controller according to the 485 communication protocol format, and then the control command is sent to the valve through the controller, and the electromagnetic flowmeter’s The real-time data is fed back to the electromagnetic flowmeter control system through the controller, and the real-time data is compared with the set parameters in real time. Within the specified range, the valve will automatically open and operate normally with one button. Otherwise, a real-time alarm will be issued and the valve will automatically close. The beneficial effect is that when the temperature exceeds the limit, the setting parameters are automatically completed, and the valve is automatically closed, which is safe and saves raw materials and costs; real-time alarms are convenient for emergency measures, and one-button operation 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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