Alternating current load detection circuit, detection method thereof and household appliance

A technology of AC load and detection circuit, applied in the field of fault diagnosis, can solve the problem of difficult fault judgment of AC load, achieve real-time fault detection, and realize the effect of fault detection.

Pending Publication Date: 2021-07-23
GREE ELECTRIC APPLIANCES INC
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide an AC load detection circuit, a detection method thereof, and a home appliance for the problem that it is difficult to judge the fault of the AC load during use.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Alternating current load detection circuit, detection method thereof and household appliance
  • Alternating current load detection circuit, detection method thereof and household appliance
  • Alternating current load detection circuit, detection method thereof and household appliance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Preferred embodiments of the application are shown in the accompanying drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the application more thorough and comprehensive.

[0028] see figure 1 , an AC load detection circuit, comprising: an AC load 10; a freewheeling diode 20, the first end of the AC load 10 is connected to the cathode of the freewheeling diode 20, and the second end of the AC load 10 is connected to the live wire L of an external AC power supply, continued The anode of the current diode 20 is connected to the neutral line N of the external AC power supply; the switch device 30, the first end...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to an alternating current load detection circuit, a detection method thereof and a household appliance. When an alternating current load does not have a fault and the alternating current load detection circuit operates normally, in a positive half cycle of an external alternating current power supply, the alternating current power supply flows into the alternating current load through a live wire and then flows into a first end of a switching device through the alternating current load; and the current flows back to the zero line through the second end of the switching device, so that the switching device outputs a first level signal to the controller. When the external alternating current power supply works in a negative half cycle, the alternating current power supply flows into the fly-wheel diode through the zero line, then flows into the alternating current load through the fly-wheel diode and flows back to the live wire, and at the moment, the switching device has no power supply input and outputs another level signal to the controller. Finally, the controller judges according to the level signal received in real time, so that information about whether the alternating-current load has a fault or not can be directly obtained, and fault detection of the alternating-current load is realized.

Description

technical field [0001] The present application relates to the technical field of fault diagnosis, in particular to an AC load detection circuit, a detection method thereof, and household appliances. Background technique [0002] An AC load is a device that converts AC power into other forms of energy in an AC circuit. With the rapid development of science and technology, AC loads are more and more widely used in people's daily life, such as the heat pipes in electric water heaters commonly used in daily life, and the shaded pole motors commonly used in some household appliances, etc. Great convenience came. [0003] However, during the use of these AC loads, short circuit or open circuit faults often occur due to improper use or device aging, so that the home appliances cannot operate normally. During use, the user cannot know the working status of the AC load, and it is difficult to realize the fault judgment of the AC load. Contents of the invention [0004] Based on ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01R31/52G01R31/54
CPCG01R31/52G01R31/54
Inventor 陈育新黄展毅杨伟生苗娇娇
Owner GREE ELECTRIC APPLIANCES INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap