关键词：开关型霍尔传感器；工程实现；差动放大电路 [gap=439]Key words：Hall switch sensor；engineering realization；circuit of differential amplifier
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双极性开关型霍尔传感器则无须判别磁体极性，具有很大的灵活性和方便性。
Bipolar Hall Switch Sensor magnet polarity is no need to distinguish, with great flexibility and convenience.
介绍集成开关型霍尔传感器的优点、特性测量及其在物理实验和自动化监测中的应用。
This article introduced the advantages of the integrated Hall switch sensor, special characteristic of measuring and its application in the physical experiment and automation supervision.
提出了在弹簧振子作简谐振动时，利用集成开关型霍尔传感器测量振动周期，以进一步测量物体惯性质量的方法。
The method to measure body's inertial mass is proposed by measuring period of vibration with the integrated hall switch sensor, when spring oscillator is in situation of simple harmonic vibration.
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