and the Cymbal array receiver. Piezoelectric ceramic disc transducer adopts the thickness direction of polarization of the piezoelectric material, PZT - 5 Cymbal array receiver by 8 ~ 16 of Cymbal transducer, of two metl rings and rubber gasket. Range of the present invention is more than 35 m, frequency band width up to 10 KHZ, high-speed mobile remote target can be detected.
Porn ceramic is the feature of low fever, small amplitude, low capacitance, low fever can make ceramic damping is small,