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介绍了一种利用霍尔效应实现位移测量的新型传感器，实验研究表明：在3mm的量程范围内精度可以达到0．01mm．应用这种传感器，可以实现钢管、钢棒、钢丝绳等细长构件的直径动态连续测量．
A new type of sensor that uses Hall effect to measure displacement is introduced. The experimental research shows that the accuracy can reach 0.01mm in the range of 3mm. Application of this sensor, you can achieve the steel pipe, steel bar, wire rope and other slender components of the dynamic continuous measurement of diameter.