地震数据采集无线同步技术研究

Study of wireless synchronization seismic data acquisition technology

针对地震勘探中时间同步问题和其他数据采集领域的采集同步问题,设计并完善基于GPS授时技术的同步技术方案,利用GPS授时信号全方位、实时性、连续性和高精度的特点,以GPS的PPS信号为基准来校准本地时钟,采用单片机和无线通信技术实现数据采集同步。通过对无线遥测各道地震数据进行同步处理,解决了当地震勘探仪采集的道数增多时数据采集和存储的实时性问题,特别是解决了未来数字式检波器中独立同步和分时处理等关键问题。

In order to solve the time synchronization problem of seismic exploration and other areas, a synchronization technology project based on the GPS time dissemination is designed, which uses the real-time, continuity and high-precision PPS signal as the benchmark to calibrate the local clock, and makes use of the wireless communication and single chip microprocessor to achieve the data collection synchronization. By synchronizing the seismic data collected by wireless remote sensing, the problem of real-time in collection and storing process has been solved when the data collected by the local seismic explorers become larger. Especially, the key problems of independence synchronization and time-sharing processes existing in future digital seismic detectors can be solved.