发明名称 |
Piezoelectric borehole microphone for seismic signals - has twin piezoceramic discs locked in borehole by wedge contact pieces |
摘要 |
<p>The piezoelectric microphone for measuring mechanical vibrations consists of a twin assembly of piezoceramic discs with rounded contact pieces bonded to them on both sides. One of the contact pieces is split to form two wedges. The microphone can be wedged diametrally at a desired spot in a borehole by applying a pull one one wedge and a push on the other by rods, extending to outside the borehole. This creates a simple, yet robust borehole microphone of high sensitivity which is free from the limited frequency range and parasitic resonance of geophones and from the vibration suppression of hydrophones.</p> |
申请公布号 |
DE2133529(B2) |
申请公布日期 |
1980.02.07 |
申请号 |
DE19712133529 |
申请日期 |
1971.07.06 |
申请人 |
BERGWERKSVERBAND GMBH, 4300 ESSEN |
发明人 |
HEUSINGER, PETER-PAUL, DIPL.-PHYS., 4300 ESSEN;PRETTIN, WILLI, DIPL.-ING., 4320 HATTINGEN |
分类号 |
B06B1/06;G01V1/52;(IPC1-7):G01V1/40;G01V1/16 |
主分类号 |
B06B1/06 |
代理机构 |
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