The dynamic vibration information is gained from acceleration meter, and then by FFT analysis, the frequency information of vibration is used as the training specimen of neural network.

In molding process the maximum value of acceleration of the molding table has been tested by means of piezoelectric accelerometer, electrical charge amplifier and peak volt meter.

A portable vehicle braking test meter is introduced, which appies the technology of intelligent data processing and whose detect component is silicon capacitate acceleration sensor.