Current sensor and multi-flux balancing control circuit thereof

A technology of current sensor and balance control, applied in the direction of voltage/current isolation, shielding device, etc., can solve the problems of low current detection accuracy, high cost, complex structure, etc.

Active Publication Date: 2018-11-02
AEROSPACE SCI & IND SHENZHEN GROUP
View PDF7 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a current sensor and its multi-flux balance control circuit, which aims to solve the problem of low current detection accuracy, complex structure, high cost and inability to realize wide-band current detection in existing current sensors. The problem

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 sensor and multi-flux balancing control circuit thereof
  • Current sensor and multi-flux balancing control circuit thereof
  • Current sensor and multi-flux balancing control circuit thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0016] see figure 1 , is a block diagram of a multi-flux balance control circuit for a current sensor provided by an embodiment of the present invention. For ease of description, only the parts related to the embodiments of the present invention are shown, and the details are as follows:

[0017] like figure 1 As shown, a multi-flux balance control circuit 1 of a current sensor 100 is connected with the excitation module 2 in the current sensor 100, used to balance the disturbance magnetic field generated by the excitation module 2, and realize the current Id in the circuit to be measured. Detec...

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 sensor and a multi-flux balancing control circuit thereof. According to the current sensor and multi-flux balancing control circuit thereof, the multi-flux balancingcontrol circuit comprising an exciting flux balancing module and an AC-DC flux balancing module is adopted in the current sensor, the exciting flux balancing module generates an exciting compensationmagnetic field according to a detected interfering magnetic field, magnetic flux of a magnetic field, formed by superimposing the exciting compensation magnetic field and the interfering magnetic field, passing through a plane perpendicular to its magnetic induction lines is zero; the AC-DC flux balancing module generates an AC-DC compensating magnetic field according to a detected A flux signal and a DC magnetic bias signal output by means of an excitation module, and magnetic flux of a magnetic field, formed by superimposing the AC-DC compensating magnetic field, a DC magnetic bias magneticfield and an AC magnetic field, passing through a plane perpendicular to its magnetic induction lines is zero, thereby eliminating the magnetic field interference generated by the excitation module, realizing precise detection of the alternating current and the direct current, improving the current detection precision of the sensor, and reducing the production cost of the sensor.

Description

technical field [0001] The invention relates to the field of current detection, in particular to a current sensor and a multi-magnetic flux balance control circuit thereof. Background technique [0002] A current sensor is a sensor that can sense the current to be measured, convert large current or micro current into small current and voltage signals that are easy to measure, and isolate and output analog or digital signals. [0003] Existing magnetically modulated current sensors generally include an excitation module and a DC flux balance module. The excitation module is used to generate the target excitation magnetic field to detect the DC bias magnetic field generated by the current to be measured passing through the current sensor, and output a DC bias signal corresponding to the DC bias magnetic field; the DC magnetic flux balance module according to the DC bias The magnetic signal generates a DC bias compensation magnetic field, and compensates the DC bias magnetic f...

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): G01R15/18G01R15/20G01R1/18
CPCG01R1/18G01R15/18G01R15/20
Inventor 田新良付伟
Owner AEROSPACE SCI & IND SHENZHEN GROUP
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