公开(公告)号：US3832762A

公开(公告)日：1974-09-03

申请号：US42788173

申请日：1973-12-26

Applicant: TEXAS INSTRUMENTS INC

Inventor： JOHNSTON R ,  SULLIVAN L

IPC: B06B1/06 ,  G01V1/20 ,  B01J17/00

CPC classification number: G01V1/201 ,  B06B1/0603 ,  Y10T29/42

Abstract: A seismic cable having minimum response to speed changes is provided. The cable includes a plurality of miniature seismic pressure sensitive detectors coupled one to another in such a manner so as to minimize through cancellation undesired electrical disturbance resulting from speed changes. Each detector includes transducers of the ceramic piezoelectric crystal type having matched geometric and physical property parameters. Each ceramic piezoelectric crystal is provided with metal electrodes such as, for example, gold, nickel, platinum, or rhodium which, in addition to being corrosion resistant and inactive as to the constituents in the ceramic material, are insoluble in liquids encountered by the detector in its use environment to avoid dendrite type growth of the metal through minute cracks developing in the ceramic which causes short circuits in the piezoelectric element.

Abstract translation: 提供对速度变化具有最小响应的地震电缆。 电缆包括多个以这样的方式彼此耦合的微型地震压力敏感检测器，以便通过消除由速度变化引起的不期望的电气干扰来最小化。 每个检测器包括具有匹配的几何和物理性质参数的陶瓷压电晶体类型的换能器。 每个陶瓷压电晶体都设置有金属电极，例如金，镍，铂或铑，除了对陶瓷材料中的组分具有耐腐蚀性和无活性性外，它们不溶于检测器遇到的液体 在其使用环境中通过在陶瓷中发生微小的裂纹来避免金属的枝晶型生长，导致压电元件短路。