Calibration method and device of current sensor

A current sensor and calibration method technology, applied in the field of sensors, can solve the problems of low calibration accuracy of current sensors, achieve rapid automation of the calibration process, and improve calibration accuracy

Pending Publication Date: 2021-07-30
BEIJING HYPERSTRONG TECH
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Problems solved by technology

[0004] The embodiment of the present application provides a calibration method and device for a current sensor to solve the problem of low calibration accuracy of the current sensor

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  • Calibration method and device of current sensor
  • Calibration method and device of current sensor
  • Calibration method and device of current sensor

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Embodiment Construction

[0036] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

[0037] The current sensor calibration method in the prior art is manual calibration. For example, for a shunt-type current sensor, the shunt is equivalent to a resistor. At a certain temperature, when the shunt-type current sensor has no current input, there is no voltage at both ends of the shunt. When the current is input, the voltage at both ends of the shunt It has a linear proporti...

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Abstract

The invention provides a calibration method and device of a current sensor. The method comprises: according to a current value range and a working temperature range of a to-be-calibrated current sensor, determining a plurality of groups of different test data of the current sensor, each group of test data comprising an input test current value and a test temperature; according to each group of test data, setting the working temperature of the to-be-calibrated current sensor and inputting a current value to the to-be-calibrated current sensor; obtaining an output current value of the to-be-calibrated current sensor; acquiring calibration parameters of the to-be-calibrated current sensor according to the multiple groups of test data and the output current value corresponding to each group of test data; and finally, storing the calibration parameters in the to-be-calibrated current sensor. Therefore, the calibration process of the to-be-calibrated current sensor can be quickly and automatically carried out, and the calibration precision is improved.

Description

technical field [0001] The embodiments of the present application relate to the technical field of sensors, and in particular, to a calibration method and device for a current sensor. Background technique [0002] At present, current sensors are widely used in new energy vehicles and energy storage fields, and their demand is large, the application current range is wide, and the demand accuracy is high. The calibration efficiency and calibration accuracy of the current sensor will have a greater impact on its application. [0003] At present, the calibration method of the current sensor is to calibrate manually. For example, for a shunt-type current sensor, the shunt is equivalent to a resistor. At a certain temperature, when the shunt-type current sensor has no current input, there is no voltage at both ends of the shunt. When the current is input, the voltage at both ends of the shunt It has a linear proportional relationship with the current. By inputting some current v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00
CPCG01R35/005
Inventor 盖亮何志超陈元璐陈喆吕喆
Owner BEIJING HYPERSTRONG TECH
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