根据高梯度磁力分离技术原理设计了一种铁磁性磨粒监测器。通过实验确定了磁滤器的合适参数，并验证了其重复性；设计确定了合适的霍尔传感器及后续处理电路。 According to the principle of high gradient magnetic separation technology, a ferromagnetic abrasive particle monitor is designed. The parameters of the magnetic filter were determined experimentally and the repeatability was verified. The suitable Hall sensor and subsequent processing circuit were designed.