Current sensor calibration system and method

Abstract

The invention provides a current sensor calibration system and method. The system comprises a current source, a processor and a calibrated current sensor connected between the current source and the processor. Each to-be-calibrated current sensor is used for being connected in series with the current source and the calibrated current sensor and is also connected with the processor. The processor is used for providing current signals. The calibrated current sensor is used for detecting a current signal of the current source to obtain a standard value. The to-be-calibrated current sensor is usedfor detecting a current signal of the current source to obtain a to-be-calibrated value. The processor is used for acquiring the standard value and the to-be-calibrated value, calibrating the to-be-calibrated value according to the standard value to obtain a calibration parameter corresponding to the to-be-calibrated current sensor, and storing the calibration parameter into the to-be-calibratedcurrent sensor to finish the calibration process of the to-be-calibrated sensor. The calibration process is not limited by the type of the to-be-calibrated current sensor, and the system and the method can be suitable for any type of current sensor and are high in applicability.

Description

technical field [0001] The present application relates to sensor technology, in particular to a current sensor calibration system and method. Background technique [0002] Current sensors are widely used in various smart devices that require current detection. Especially for some devices that require high control accuracy, the detection accuracy of current sensors also has high requirements. In order to ensure the accuracy and precision of the current sensor, the current sensor is generally calibrated. [0003] There are two common current detection principles for current sensors: 1. Based on the shunt connected in series to the circuit, current measurement is performed by measuring its partial voltage; 2. Based on the principle of the Hall effect, the cable is passed through the Hall element (magnetic ring) ) to measure its electromagnetic induction potential for current measurement. In related technologies, most of the current sensors are calibrated by relying on the cur...

AI Technical Summary

Problems solved by technology

In related technologies, most of the current sensors rely on the current detection principle of the current sensor to calibrate the current sensor, so that the applicability of the calibration method is limited, and only sensors with the same working principle can be calibrated

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