Piezoelectric acceleration sensor performance and parameters and piezoresistive acceleration sensor performance and parameters, including sensitivity, frequency response, precision error. However, there is great difference between the two properties, such as piezoelectric acceleration sensor is capacitive, high impedance, and the piezoresistive acceleration sensor is resistive, low impedance; piezoelectric acceleration sensor in the frequency range is narrow, the constant acceleration of piezoelectric acceleration sensor output signal is usually not, its frequency response range 2 ~ 270Hz; smaller error of piezoelectric acceleration sensor, usually about half the piezoresistive acceleration sensor.
Range of application range of piezoelectric acceleration sensor as piezoresistive acceleration sensor range. At present, the piezoelectric acceleration sensor are mostly used for vibration measurement equipment, through the vibration reflects whether the normal operation of equipment, machinery, to detect the fault, to ensure the safe operation of.
The acceleration sensor described above applies only to the linear motion, but the rotary motion not using the sensor. Usually, objects in the rotary motion acceleration not only size, and direction to change, so the rotary motion tend to use the speed sensor, after passing through a differential circuit, the output signal of the acceleration, or by other sensors.
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