Automatic detection system of electric changeover valve of refrigerator

An electric switching and automatic detection technology, which is applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of low efficiency of detection methods, inability to quickly and intuitively and accurately judge electric switching valves, etc., so as to facilitate whether it is working normally, The effect of easy operation

Active Publication Date: 2014-03-26
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Abstract
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Problems solved by technology

[0002] The traditional method of detecting the electric switching valve of the refrigerator is to apply the normal working conditions of the electric switching valve, inject compressed air into its input end, and use the hand to sense whether there is compressed air flowing out of the output port of the electric switching valve. This detection method is inefficient and cannot Quickly and intuitively and accurately judge whether the electric switching valve is working normally

Method used

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  • Automatic detection system of electric changeover valve of refrigerator

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Embodiment Construction

[0015] The automatic detection system of the electric switching valve of the refrigerator in the present invention is designed to quickly, accurately and conveniently detect the working state of the electric switching valve of the refrigerator.

[0016] The automatic detection system of refrigerator electric switching valve is composed of MCU, power supply, drive amplifier and state detection circuit.

[0017] The MCU in the refrigerator electric switching valve automatic detection system is mainly responsible for generating the waveform to control the normal operation of the refrigerator electric switching valve. The state information of the reed switch on the output port of the switching valve; it is responsible for comparing the collected state with the control command issued. If it is consistent with the expected control, the electric switching valve is working normally, otherwise there is a fault, and the judgment result will be displayed on the on the information display...

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Abstract

The invention provides an automatic detection system of an electric changeover valve of a refrigerator. The automatic detection system is characterized by comprising a MCU, a driving amplifier, a power supply and a detection circuit. The power supply is connected with the driving amplifier and the MCU. The input end of the detection circuit is connected with an output port of the electric changeover valve, and the output end of the detection circuit is connected with the MCU. Compared with traditional detection modes, the automatic detection system is convenient to operate and can quickly detect a working state of the electric changeover valve of the refrigerator and display a detection result on an information display screen of the MCU, and an operator can intuitively check whether the electric changeover valve normally works or not.

Description

technical field [0001] The invention relates to the field of system testing, in particular to the field of automatic detection of electric switching valves of refrigerators. Background technique [0002] The traditional method of detecting the electric switching valve of the refrigerator is to apply the normal working conditions of the electric switching valve, inject compressed air into its input end, and use the hand to sense whether there is compressed air flowing out of the output port of the electric switching valve at the output end. This detection method is inefficient and cannot Quickly and intuitively and accurately judge whether the electric switching valve is working normally. Contents of the invention [0003] In order to solve the above problems, the present invention provides an automatic detection system for electric switching valves of refrigerators, which is characterized in that it includes an MCU, a drive amplifier, a power supply, and a detection circui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
Inventor 卢兴旺王文娟
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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