Seismic Geophone Tester Circuit Design

The oil industry has been an important offshoot of the national economy, then theexploration and exploitation of oil are particularly important. Oil exploration technology wealways inseparable from seismic exploration method and geophone direct impact on the resultsof exploration data, it is necessary for the detector to be tested. In this paper, moving-coilgeophone impedance test accuracy studies and circuit design.Firstly, the existing research methods geophone tester theory, the traditionalimpedance test methods and experimental analysis, calculated with reference to resistance tochange and error correction circuit under test, improve test accuracy. Research geophonetester structures, an overall block diagram of the instrument design. On this basis, this paperuses S3C6410processor and seismic data acquisition dedicated chipset (CS3302, CS5373a,CS5378) designed a data acquisition circuit, the choice of256Mb SDRAM and1Gb NANDFLASH and design can be inserted SD memory card interface memory circuit, the choice of4.3-inch four-wire resistive touch screen for human-computer interaction and design ofhigh-speed mini-USB interface and RS232serial port for program download and datatransfer, designed lithium-ion batteries and battery charging circuit from the adapter from theswitch circuit. Finally, make experiments to verify the accuracy of the impedance test,tomake a comparison, and on the part of the circuit to make PCB system board.The circuitdesign is ideal for high-capacity, low-power, high-precision, portable and other characteristicsof modern geophone tester.