可存储采集站的设计

A Design of A Storage Data Acquisition Unit

随着高分辨率地震勘探的不断发展，对地震仪器的道数和采样率的要求越来越高。由于大线传输速率的限制，这两者不能同时兼顾，为解决这一矛盾，开发研制了可存储数据的采集站，其特点是：放地后，野外数据先暂存在采集站中，待采集结束后再分时读取数据。系统测试表明，该采集站存放数据，取出数据完全正确，大大提高了朱祥率，可广泛应用于高分辨率的勘探中。

篧ith the developInent of the high-resolution seisnic exPlorati0n, the higher mpiast of hath charmel number andSaInPle rate is reqUired for seisndc instIUInnt. But they are lindtal by the line bossion rate. F0r solving this prob-lem, we devefoP a Stoop DAU (Data AcqUisihon Unit). The seisndc data can be tempodrily stored in the DAU thershot and can be ProCessed in the mariner of tbe-share, i. e., fongr data pmeessing tiIne can make the channl nuInberand Samle rate increase. This PaPer ndnly describo the exPanSion of data RAM in the DAU.