Control circuit and control method capable of performing power failure self-detection

A technology for power failure and control circuit, applied in power test, circuit device, emergency power arrangement and other directions, can solve the problem of no switching power supply self-test, and achieve the effect of facilitating after-sales maintenance and improving maintenance efficiency

Pending Publication Date: 2019-11-15
深圳数联天下智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a control circuit and method for self-detecting power supply failures in view of the problem that the existing controller does not have the problem of self-detection of its own switching power supply

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  • Control circuit and control method capable of performing power failure self-detection
  • Control circuit and control method capable of performing power failure self-detection
  • Control circuit and control method capable of performing power failure self-detection

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Embodiment Construction

[0023] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.

[0024] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" an...

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Abstract

The invention provides a control circuit and a control method capable of performing power failure self-detection. The circuit comprises a switching power supply circuit, a controller, a communicationdevice, an abnormality control circuit, a standby power supply circuit and a first detection circuit. The switching power supply circuit is electrically connected with a power supply, the abnormalitycontrol circuit, the first detection circuit and a voltage switching circuit. The voltage switching circuit is electrically connected with the standby power supply circuit and the controller. The controller is electrically connected with the first detection circuit and the abnormality control circuit. The communication device is electrically connected with the switching power supply circuit and the standby power supply circuit. The controller is in communication connection with a user terminal through the communication device. The abnormality control circuit is electrically connected with thepower supply and the standby power supply circuit. The first detection circuit is used for detecting first output end voltage of the switching power supply circuit and outputting the first voltage. The controller determines a working state of the switching power supply circuit according to the first voltage, and outputs high level or low level. The abnormality control circuit controls on and off of the power supply circuit based on the first voltage and high level/low level.

Description

technical field [0001] The present application relates to the technical field of home appliances, in particular to a control circuit and method for self-detecting power failure. Background technique [0002] In the home appliance industry, with the progress of the times, the intelligent control of home appliances is becoming more and more popular. The intelligent control of home appliances is realized through its internal controller. The controller in the home appliance is powered by its own switching power supply. [0003] At present, there is no fault detection for the switching power supply of the controller of the traditional household appliances. Once the switching power supply of the controller fails, the controller cannot work normally, and it is impossible to give a clear indication of the status of the controller. Users can only take the initiative to contact the after-sales service to report for repairs, and the after-sales service can only be repaired based on e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/40G01R31/42H02J9/06H02M1/00
CPCG01R31/40G01R31/42H02J9/06H02M1/00Y02B70/10Y02B70/30Y04S20/20
Inventor 刘国涛
Owner 深圳数联天下智能科技有限公司
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