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

A state control and control method technology, which is applied in the control of instrument valve-controlled motors and the field of motor state control machines, can solve the problems of unable to detect the valve state in real time, and cannot complete the normal opening and closing of the valve, so as to achieve the effect of precise valve control function

Active Publication Date: 2019-07-30
SHENZHEN CLOU ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Such as figure 1 As shown, the present invention provides a method for controlling a meter valve-controlled motor. In this embodiment, the meter is a photoelectric direct-reading remote water meter. The method includes the following steps:

[0072] 101. Receive an external action command, and control the state transition of the motor according to the external action command, for example, receive an external action command, and control the motor from the "idle" state to the "standby" state;

[0073] 102. Continuously detect the status of the water meter communication serial port, and output a serial port status detection signal, for example, in the motor "standby" state, continuously detect the status of the water meter communication serial port, and output a serial port status detection signal;

[0074] 103. Receive the serial port state detection signal, and control the motor to maintain or switch the state according to the serial port state detection signal. For examp...

Embodiment 2

[0078] Such as figure 2 As shown, on the basis of embodiment 1, in further embodiment 2, the control method of the instrument valve-controlled motor of the present invention also includes, in "receiving the valve in-position state monitoring signal, and controlling the motor to maintain or After the step of "changing the state", it may also include, 106, controlling the motor to maintain its converted state according to the set time signal, and then further controlling the motor to change the state. Specifically, when the valve in-position state monitoring signal indicates that the valve is in place, after the control motor changes from the "acting" state to the "end" state, in the "end" state of the motor, the control motor continues to operate until the motor maintains " After 200ms-300ms, it will turn to "idle" state. Preferably, in the "end" state of the motor, the motor is controlled to keep moving until the motor remains in the "end" state for 230ms-270ms, more prefera...

Embodiment 3

[0080] Such as image 3 As shown, on the basis of embodiment 2, in further embodiment 3, the control method of the instrument valve control motor of the present invention also includes, 201 continuously monitors the valve action time, and outputs the valve action time signal, and 202 receives the valve action Time signal, and control the motor to maintain or switch state according to the valve action time signal; at the same time, 301 continuously monitors the motor current signal and outputs the motor current signal, 302 receives the motor current signal, and controls the motor to maintain or switch state according to the motor current signal. Specifically, when the motor is in the "action" or "end" state, the valve action time is continuously monitored, and the valve action time signal is output, and the valve action time signal is received, and the motor is controlled to maintain or switch the state according to the valve action time signal. If the valve action time does no...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P7/00F16K31/04
CPCF16K31/04H02P7/00
Inventor 邓政策
Owner SHENZHEN CLOU ELECTRONICS
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