强震与微震观测系统的研究

Research on the system of strong earthquake observation and slight earthquake observation

本系统采用动圈型换能器(属于速度型换能器)加电子反馈形成在0.05Hz^50Hz的加速度仪特性,大大减小了甚低频率的影响,而其线性及动态范围也能满足实际使用的要求,避免了位移型换能器在低频段的较大误差,在地震观测中取得较好的效果。

The dynamic accelerator-type apparatus applied in the system, comes into being an accelerator-characteristics from 0.05Hz to 50Hz by electronic feeding back, enormously decrease the effects of super low frequency interference and the linear and dynamic ranges can satisfy the actual functions, avoid obviously the errors of displacement-type apparatus in low frequencies, acquire the satisfactory effects. This system can carry out simultaneously the observation of strong earthquake and slight earthquake in one observation well deep in rock. The digital collection and the digital transmission are carried out in the slight observation apparatus. The system provides a collating methods in a lump through an electronic power equivalent to a natural power. The system can give different length records according to different accidents. The apparatus can automatically work and can be controlled by manual work.