Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Current detecting device and method

A current detection device and current technology, applied in the field of power electronics, can solve problems such as lack of detection means, and achieve the effect of reducing types

Inactive Publication Date: 2012-07-04
HUAWEI TECH CO LTD
View PDF4 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of serialization of products, the range of detected current values ​​continues to increase, but the existing technology can only detect currents within a certain range of current values ​​through the same board, and lacks effective detection methods for different current value ranges. current detection

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
  • Current detecting device and method
  • Current detecting device and method
  • Current detecting device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] 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 creative efforts fall within the protection scope of the present invention.

[0033] An embodiment of the present invention provides a current detection device, such as figure 1 As shown, it includes: a current sensor 1, which is used to induce the current to be measured on the primary side of the current sensor to the secondary coil of the current sensor through mutual inductance; the first to Nth load units L1, L2, .. ., LN, N is a natural number of 2 or more, wherein, the two ends of the first load unit L1 are respectively electrically co...

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 discloses a current detecting device and method, relating to the field of power electronics. According to the invention, the purpose that one manufactured board is used for detecting current values of different ranges is achieved; the kinds of the manufactured boards are reduced; and therefore, the cost of production, management and maintenance is reduced. The current detecting device comprises a current sensor, a first to an Nth loading units, a controller and an AD(Analog-to-Digital) detecting unit, wherein N is a natural number of 2 or more than 2; the controller is used for respectively controlling switching on or switching off of first to the Nth switching units when the value of detected current belongs to different detecting ranges so that the first to the Nth resistance units form loads adapting to the detecting ranges; the detecting ranges are divided according to the value of the detecting current; and the AD detecting unit is used for sampling the voltage of the loads formed by the first to the Nth resistance units to obtain a load voltage value and computing to obtain the value of current to be detected according to the load voltage value.

Description

technical field [0001] The invention relates to the field of power electronics, in particular to a current detection device and method. Background technique [0002] At present, in the power system, in order to achieve precise control, it is usually necessary to detect the current of the equipment to obtain the measured value, and then the controller adjusts the relevant parameters according to the measured value of the current. In the current detection scheme, the method of resistance sampling is usually used to convert the current signal into a voltage signal, and then pass it to an analog-to-digital (AD) conversion interface for sampling, so as to obtain the measured value of the current. With the development of serialization of products, the range of detected current values ​​continues to increase, but the existing technology can only detect currents within a certain range of current values ​​through the same board, and lacks effective detection methods for different cur...

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): G01R15/08G01R19/25
Inventor 李习东王荣亮
Owner HUAWEI TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com