覆盖开关是地震勘探的重要设备,但是,目前国内外所用的覆盖开关全都是有触点的机械开关,由于它存在缺点甚多,就不大适应当前数字化的要求。 无触点覆盖开关是根据新设计的“场效应管矩阵网络”来实现的。由于它克服了机械开关的缺点,所以曾得到野外人员的欢迎。 Cover switch is an important equipment for seismic exploration. However, the cover switches used at home and abroad are all mechanical contacts with contacts. Because of its disadvantages, it is not suitable for the current digital requirements. Non-contact covered switch is based on the newly designed “FET matrix network” to achieve. Because it overcomes the shortcomings of the mechanical switch, it has been welcomed by field staff.