Acceleration sensor can transform vibration and impact into electric signals. Based on the theory of positive piezoelectric effect of piezoelectric quartz crystal and piezoelectric ceramic, piezoelectric acceleration sensor is high frequency acceleration sensor. After amplified and transformed by charge amplifier, the signal of high-resistance charge signal could be inputted into data acquisition system to measure vibration and impact. The output cable must be low-noise coaxial cable because the output signal is weak to micromicro level. Piezoelectric acceleration sensor features small size, light weight, high frequency response, large range of measurement and temperature, large resistance to overloading which is used in industries such as military, automobile, road and bridge detection and applied to realize safty control, collision test, earthquake detection, construction and enviroment monitoring, vibration measurement, geological exploration, vibration measure and analyse of railway, bridge and dam, vibration monitoring of highrise building. |
