Self-locking protection circuit and air conditioner

A self-locking protection and circuit technology, applied in emergency protection circuit devices, multiple input and output pulse circuits, electrical components, etc., can solve the problems of high failure rate and poor reliability of protection circuits, and improve safety and reliability. , to ensure the effect of reliability

Active Publication Date: 2019-11-19
HISENSE (SHANDONG) AIR CONDITIONING CO LTD
View PDF8 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the protection circuits in the prior art generally have the problems of high failure rate and poor reliability

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
  • Self-locking protection circuit and air conditioner
  • Self-locking protection circuit and air conditioner
  • Self-locking protection circuit and air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0018] figure 2 It is a schematic diagram of the structure of the self-locking protection circuit provided by the present invention. reference figure 2 As shown, the self-locking protection circuit of this embodiment includes: a sampling circuit, a comparator, a self-locking module, an unlocking control module, and an output module. Among them, the sampling circuit is connected to the input terminal of the comparator, and the sampling ...

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 provides a self-locking protection circuit, comprising a sampling circuit, a comparator, a self-locking module, an unlocking control module and an output module, wherein the sampling circuit is connected with the input end of the comparator, and the sampling circuit is used for acquiring current / voltage parameters in the main circuit; the first end of the self-locking module is connected with the input end of the comparator, and the second end of the self-locking module is connected with the output end of the comparator, and the unlocking control module is connected with the first end of the self-locking module; and the output module is connected with the output end of the comparator and the second end of the self-locking module, and the output module outputs a fault signal,and the fault signal is transmitted to a software control unit and / or a hardware control unit of the main circuit. The air conditioner provided by the invention is provided with the self-locking protection circuit, and when the protection circuit breaks down, the level of the fault signal is overturned while the self-locking module locks the level of the fault signal, and after the fault is removed, the unlocking control module unlocks the locked level of the fault signal, so that the reliability of the protection circuit and the safety of the air conditioner are ensured.

Description

Technical field [0001] The invention relates to the technical field of circuit protection, in particular to a self-locking protection circuit and an air conditioner. Background technique [0002] In electrical products, various protection circuits are usually required, such as PFC protection circuits, temperature protection circuits, etc. Figure 1A , Figure 1B It is a schematic diagram of the structure of a protection circuit in the prior art. Figure 1A , Figure 1B It is for the positive and negative logics, sampled by the sampling circuit and input to the input of the comparator. The threshold Vref is preset in advance. When the sampled value Vin reaches Vref, the output level Vo of the comparator output is reversed and the fault signal Fo Input to the software control unit MCU (Microcontroller Unit, Microcontroller Unit) and / or hardware control unit of the main circuit, thereby realizing the circuit protection function. However, the protection circuit of the prior art general...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H03K5/22H02H7/12
CPCH03K5/22H02H7/12
Inventor 孙江涛陈建兵张明磊鹿红伟
Owner HISENSE (SHANDONG) AIR CONDITIONING CO LTD
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