Check patentability & draft patents in minutes with Patsnap Eureka AI!

Power frequency TMR current sensor with temperature compensation

A technology of current sensor and temperature compensation, which is applied in the direction of the magnitude/direction of the magnetic field and the use of digital measurement technology to measure, etc. It can solve the problems of temperature drift and inaccurate measurement, and achieve the effect of improving measurement accuracy and measurement ability

Pending Publication Date: 2022-05-13
国网四川省电力公司营销服务中心 +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These sensors containing electronic components work for a long time, due to temperature changes, the electronic components of the sensor's internal circuit will experience temperature drift, resulting in inaccurate measurement

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
  • Power frequency TMR current sensor with temperature compensation
  • Power frequency TMR current sensor with temperature compensation
  • Power frequency TMR current sensor with temperature compensation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0080] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0081] In the embodiment of the present invention, such as figure 1 As shown, a power frequency TMR current sensor with temperature compensation is provided, which can include a balance coil, and the balance coil is non-contact coupled to a wire to be detected to balance the magnetic field formed by the wire, wherein it can also include:

[0082] A magnetic sensor, the magnetic sensor is arranged in the balance coil, and the magnetic sensor includes a pair of differential output interfaces for outputting differential cur...

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 power frequency TMR current sensor with temperature compensation, which comprises a balance coil, a magnetic sensor, a temperature sensor and a temperature compensation circuit, the balance coil is coupled to a wire to be detected in a non-contact manner to balance a magnetic field formed by the wire, the magnetic sensor is arranged in the balance coil, and the temperature compensation circuit is arranged in the temperature sensor. The temperature sensor is arranged in the magnetic sensor and is used for detecting the temperature of the magnetic sensor; and the temperature drift adjusting unit is connected with the temperature sensor and is used for adjusting the power supply of the magnetic sensor according to the temperature of the magnetic sensor. According to the power frequency TMR current sensor with temperature compensation provided by the invention, temperature drift adjustment is carried out on the non-contact magnetic sensor, so that temperature compensation of the non-contact magnetic sensor is realized, the current measurement precision can be improved, and the power frequency current measurement capability is improved.

Description

technical field [0001] The invention relates to the technical field of power measurement, in particular to a power frequency TMR (Tunnel Magnetoresistance tunnel magnetoresistance) current sensor with temperature compensation. Background technique [0002] Electric parameter measurement technology is one of the key technologies of power metering, and it is also the basis of the energy Internet perception layer. With the transformation of the power grid to intelligence and digitalization, traditional contact electrical parameter measurement equipment gradually shows shortcomings in measurement accuracy, reliability and adaptability. [0003] The non-contact current sensor is an interface device between high and low voltage that uses the magnetic field generated by the current to detect the current value in the state of electrical insulation. The non-contact current sensor can well overcome the contact The defect of insufficient adaptability of current measuring equipment. E...

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): G01R19/25G01R33/02
CPCG01R19/25G01R33/02
Inventor 李福超程志炯刘苏婕刘鹍周一飞李琪林龙兆芝罗睿希李文婷王睿晗
Owner 国网四川省电力公司营销服务中心
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com