Method and device for detecting drive circuit of electromagnetic induction device

Abstract

The invention discloses a method and device for detecting a drive circuit of an electromagnetic induction device. The method comprises the steps of: firstly, acquiring drive waveform output from a drive circuit on a control panel of a to-be-detected machine to an electromagnetic induction device; then calculating a theoretical action position of the electromagnetic induction device based on the drive waveform; comparing the calculated theoretical action position with a set position which is input on the control panel of the to-be-detected machine in advance; if the theoretical action position is in accordance with the set position, judging the drive circuit is in a normal state; and otherwise, judging the drive circuit is in fault. The detecting method and the detecting device of the invention are particularly suitable for performing performance detection on drive circuits of electromagnetic induction devices such as an electronic expansion valve and a stepping motor, not only can realize an open degree of the electronic expansion valve and the real-time display of the action position of the stepping motor, thereby further finishing exact detection on abnormal condition of the drive circuit, but also can serve as a test platform tool of control software to set the drive control of a fixed-point open degree rapidly so as to finish the functional verification of the control software.

Description

technical field [0001] The invention belongs to the technical field of electronic circuit testing, and in particular relates to a method and a device for testing a driving circuit of an electromagnetic induction device such as an electronic expansion valve or a stepping motor. Background technique [0002] In the current air-conditioning products, the electronic expansion valve and the stepper motor are indispensable and important components in the air-conditioning system. In the process of producing and testing air-conditioning products, it is necessary to test the performance of various functional circuits and actuators on the air-conditioning circuit board. However, for the detection of electronic expansion valves and stepping motors in air-conditioning products, there is still a lack of an intuitive and effective detection method. Taking the electronic expansion valve as an example for illustration, in the process of driving and controlling the electronic expansion valv...

AI Technical Summary

Problems solved by technology

However, for the detection of electronic expansion valves and stepping motors in air-conditioning products, there is still a lack of an intuitive and effective detection method

Taking the electronic expansion valve as an example to illustrate, in the process of driving and controlling the electronic expansion valve, the current opening of the electronic expansion valve cannot be reflected intuitively.

If there is a problem, it is impossible to know whether it is the problem of the electronic expansion valve itself or the problem of the drive circuit used to control the action of the electronic expansion valve, which brings great trouble to the solution of the problem.

[0003] At the same time, in the new product development and debugging stage, the system personnel need to adjust the opening of the electronic expansion valve to test some parameters for a thorough investigation. Due to the lack of special valve adjustment tools, this also causes inconvenience to the development of the system

Moreover, for software designers, after writing the control software of the electronic expansion valve, there is also a lack of a suitable test platform for secondary testing of the written control software

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