改进的非接触式电流测量方法

Improved Contactless Current Measurement Method

霍尔传感技术目前在非接触式电流测量产品中应用广泛,但霍尔传感器中铁磁材料存在的磁滞效应和磁损耗限制了其使用范围和测量精度。通过应用微处理器中软件计算方法补偿霍尔传感器中硬件电路的误差,降低了硬件成本,提高了霍尔传感器的测量精度。

Hall sensor technology is widely used in non-contact current measurement products.However,due to the hysteresis effect and magnetic loss of ferromagnetic materials in Hall sensor,the application range and measurement accuracy of Hall sensor are limited.In this paper,the software calculation method of microprocessor is used to compensate the error of hardware circuit in Hall sensor,which reduces the hardware cost and improves the measurement accuracy of Hall sensor.