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Monitoring method and system for AC contactor

An AC contactor and monitoring system technology, applied in general control systems, control/regulation systems, instruments, etc., can solve problems affecting the operation stability of household appliances or control systems, AC contactors with faults, etc., to reduce long-term The effect of running with faults, reducing workload and improving stability

Active Publication Date: 2018-01-16
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a monitoring method and system for an AC contactor. In the prior art, the operating status of the AC contactor cannot be known in time, resulting in long-term faulty operation of the AC contactor, which affects the operation of household appliances or control systems. stability problem

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  • Monitoring method and system for AC contactor
  • Monitoring method and system for AC contactor
  • Monitoring method and system for AC contactor

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] An embodiment of the present invention provides a monitoring system for an AC contactor. In this embodiment, an AC contactor in an air-conditioning system is used as an example for illustration. The structure of the AC contactor is the same as the existing structure, and here No longer. refer to figure 1 and figure 2 , figure 1 It is a monitoring system for three-phase AC contactors, figure 2 It is a monitoring system for a single-phase AC contact...

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Abstract

The invention provides a monitoring method and system of an AC contactor. The monitoring system comprises a current detection device, a voltage detection device, a contact detection device and a controller; the current detection device is used to detect a current flowing through a contact of the AC contactor; the voltage detection device is used to detect a voltage of the contact when the contact is disconnected; the contact detection device is used to detect connection and disconnection of the contact to obtain the frequency of the connection and the frequency of the disconnection of the contact; and the controller is connected with the current detection device, the voltage detection device and the contact detection device, the controller obtains current state information of the AC contactor according to the voltage of the contact when the contact is disconnected, the current flowing through the contact before the contact is disconnected, the frequency of the connection and the frequency of the disconnection of the contact and historical test data, and the current state information is displayed to a user, so the user can timely know a state of the AC contactor, a fact that the AC contactors works in a fault state for a long term is reduced, and stability of the system is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioners, and more specifically, to a monitoring method and system for an AC contactor. Background technique [0002] The AC contactor is an automatic control device, which is used to control the on and off of the load circuit or the large-capacity control circuit. Because the AC contactor has the advantages of remote operation, frequent operation and large control capacity, the AC contactor has been widely used in various automatic control circuits and household appliances. [0003] However, since the user cannot know the status of the AC contactor when using household appliances or control systems, once the fault of the AC contactor is not discovered in time, the AC contactor will run with a fault for a long time, which will bring safety hazards to the user , It will also affect the stability of the operation of household appliances or control systems. Contents of the invention [0004] In v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/048
CPCG05B19/048
Inventor 吴超徐金辉奚明耀郑志威林肖纯赵曼
Owner GREE ELECTRIC APPLIANCES INC
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