Control method of instrument valve-controlled motor and motor state control machine

Abstract

The invention relates to an instrument valve control motor control method and a motor status control machine. The method comprises the steps that an external action command is received, and motor status switching is controlled according to the external action command; the instrument communication serial port status is detected continuously, and a serial port status detection signal is output; the serial port status detection signal is received, and a motor is controlled to keep or switch the status according to the serial port status detection signal; the valve in-place status is monitored continuously, and a valve in-place status monitoring signal is output; a valve in-place status monitoring signal is received, and the motor is controlled to keep or switch the status according to the valve status monitoring signal. The motor status control machine comprises corresponding modules achieving the above-mentioned functions. By means of the control method and the status control machine, the motor can be controlled accurately, and then the stable, efficient and precise valve control function is achieved.

Description

technical field [0001] The invention relates to the field of automatic control. More specifically, the present invention relates to a control method of an instrument valve-controlled motor and a motor state control machine. Background technique [0002] Photoelectric direct reading water meters generally use small DC motors to drive the opening and closing of their valves. The water meter MCU controls the rotation of the DC motor (forward and reverse directions) and stops by generating different control signals to achieve the purpose of operating the valve. [0003] In the process of valve control, the MCU must timely and accurately identify whether the valve action is in place, not only to ensure that the valve can be opened and closed correctly, but also to prevent the motor from continuing to operate after the valve action is in place, resulting in waste of electric energy, or even burning the motor and control. circuit. At present, three methods are commonly used in t...

AI Technical Summary

Problems solved by technology

This method cannot detect the valve state in real time, so when the motor is in place and the action time is uncertain, such as the size of the water flow through the valve changes, the valve has rust, and the electrical characteristics of the motor circuit change, the normal opening and closing of the valve will not be completed.

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