The bureau puts the examination ultrasonic sensor circuit design

The shelf depreciation examination is the guarantee and a maintenance electrical power system normal operation important measure. The existing bureau puts in the examination method, the electromagnetism examination and the ultrasonic sensor wave examination are two kinds have the superiority examination method. In view of the ultrasonic wave examination law in the sensor sensitivity low flaw, uses low noise amplifier (LNA) and the logarithm detection technology, designed one kind of examination sensitivity high, the available battery power supply bureau has put the examination ultrasonic sensor, and to its performance and so on sensitivity, gain has made the test.