Medium hole radial composite piezoelectric ceramic wave detector

The utility model relates to a medium-hole radial composite piezoelectric ceramic detector, composed of a glass reinforced plastic casing, an upper cover, a base, crystal bases, crystals, an electrode plate, a leading-wire and a cable. The inner surface of the glass reinforced plastic casing is provided with the electrode plate, and the piezoelectric ceramic crystals are distributed along the radial circumference in a multilayer mode and are separated by the crystal bases. The upper and lower crystal bases are respectively connected with the upper cover and the base, and the electrode plate is connected with the cable through the leading wire. The utility model has the advantages of small outer diameter, short residual vibration, low Q value, width frequency band, high low-frequency sensitivity, simple manufacture and low cost. A plurality of detector arrays can be combined, the one-sending and multi-receiving can be achieved, and the utility model can receive horizontal non-directional sound wave.