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Hall current sensor testing device and method

A Hall current and testing device technology, applied in the field of testing, can solve the problems of not being able to automatically complete the linearity test of the Hall sensor and low accuracy, and achieve the effect of improving test accuracy and work efficiency

Inactive Publication Date: 2019-11-22
CASIC DEFENSE TECH RES & TEST CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional Hall current sensor test method is to connect the Hall sensor to a single instrument through manual wiring, and manually adjust the test parameters. The accuracy is low and the linearity test of the Hall sensor cannot be completed automatically.

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  • Hall current sensor testing device and method

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0029] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are to distinguish two entities with the same name but different parameters or parameters that are not the same, see "first" and "second" It is only for the convenience of expression, and should not be construed as a limitation on the embodiments of the present invention, which will not be described one by one in the subsequent embodiments.

[0030] A Hall current sensor testing device provided by the invention includes a PCB wiring board, a current source, a host computer, a data acquisition card and a voltage source.

[0031] The PCB wiring board is used to fix the Hall current sensor, establish the elec...

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Abstract

The invention discloses a Hall current sensor testing device and method. The Hall current sensor testing device comprises: a PCB wiring board; a current source electrically connected with the Hall current sensor through the PCB wiring board and providing a test current for the Hall current sensor; a voltage source electrically connected with the Hall current sensor through the PCB wiring board andproviding a working voltage for the Hall current sensor; a data acquisition card electrically connected with the Hall current sensor through the PCB wiring board and used for acquiring a second signal output by the Hall current sensor; and an upper computer electrically connected with the current source and the data acquisition card, and configured to send a first signal to the current source tocontrol the output of the test current, and acquire the second signal from the data acquisition card. According to the invention, automatic testing and linearity calculation of the Hall current sensorcan be performed automatically.

Description

technical field [0001] The invention relates to the field of testing, in particular to a testing device and method for a Hall current sensor. Background technique [0002] The Hall current sensor is based on the magnetic balance Hall principle. According to the Hall effect principle, the current is passed through the control current terminal of the Hall element, and a magnetic field with a magnetic induction intensity of B is applied in the normal direction of the Hall element plane. Then In the direction perpendicular to the current and magnetic field (that is, between the Hall output terminals), a potential will be generated, which is called the Hall potential, and its magnitude is proportional to the product of the control current and the magnetic induction. [0003] Since the magnetic circuit has a good linear relationship with the output of the Hall device, the voltage signal output by the Hall device can indirectly reflect the magnitude of the measured current, making ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/02
CPCG01R35/02
Inventor 乔秀铭吕乐谷成赵慧婷
Owner CASIC DEFENSE TECH RES & TEST CENT