• 责任者：Li Huailiang (Key Subject Laboratory of National Defense for Nuclear Waste and Environmental Safety ; Southwest University of Science and Technology ; Mianyang 621010 ; China) ; Tuo Xianguo
• 刊名：Chinese Journal of Geophysics
• 出版年：2013
• 卷期：56(11)
• 关键词：数字地震仪 ; digital seismographs ; 遥测地震仪 ; telemetric seismographs
• 页码：p.3673-3682
• 图表：9 illus., 3 tables, 21 refs.
• 分类号：1600
• issnNo：ISSN0001-5733
• isbnNo：CN11-2074/P

     A portable wireless telemetry shallow digital seismograph which is completely independently developed is introduced in this paper.It takes wireless ad hoc network as the core of the system,based on double ARM and FPGA platforms.The multi-function IP soft core driver mode and embedded operating system are adopted to improve the integration level and to reduce the size of the equipment in the aspect of hardware.A dynamic and configurable signal conditioning unit is designed to ensure the dynamic range and fidelity of the system.And the technology of parallel double buffer including the circulation pre-acquisition and storage is applied to realize strictly multichannel parallel acquisition under the condition of uncertain transmission delay.This paper analyzes wireless radio and wireless Ethernet in details,which is suitable for seismic data transmission,and the corresponding networking scheme and key technical difficulties.The problems of acquisition synchronization and non-uniform sampling to distributed wireless signal acquisition station are solved.Twelve parallel acquisition channels are integrated to each signal acquisition station,which can reach 18-bit resolution with a 4 k sampling rate,and its parameters can be configured remotely.The field quality control function is integrated in the software that is suitable for engineering exploration in complicated environments.The size and weight of this equipment are reduced,and the complexity of construction layout is decreased since various additional accessories are removed.In doing so,the environmental adaptability and exploration efficiency of the equipment are greatly improved.