The Design of Acquisition System of Compact Seismic Recorder

Abstract

At present, seismic exploration, as a commonly used geophysical method has been widely applied in the field of resource exploration. Combined with the special application environment, based on the techniques of 24bit Δ- ΣA/D, multi-channel seismograph acquisition system is realized by the 24bit Δ- Σ conversion chip CS5340; design the related circuits with FPGA, reading and caching the serial output data of D/A and converting to parallel dataflow, realizing the data transmit to ARM; On the basis of hardware design, we complete the design of the acquisition system monitoring and control software, use the C language designed acquisition software and trigger control software, realize the various instructions of the host via the Ethernet port (Ethernet) transmit to the ARM and complete of the data collection. Last, the prototype has been finished, and the primary test results are given