Low Power Design For Integrative Refraction Seismic Instrument

With the long-term rapid development of social and economic, China’scomprehensive national strength has increased gradually, especially the industry as apioneer in the development of various industries. However, the ensuing need to face isthe depletion of shallow mineral resources, it is difficult to satisfy the needs of rapidindustrial development. How to solve the contradiction between resources anddevelopment, becoming one of the problems need to face by the Seismic exploration,but it also becomes a driving force for the rapid development of the Seismicinstruments. The most effective way to solve this problem is to develop seismicdetection technology and related equipment to provide the necessary scientific andtechnological support for the exploration and development of deep resources. Becauseof the field operations characteristics of Seismic exploration instruments and theintegration of multiple functions, the demand of battery-powered seismic instrumentsconsumption indicators have become increased.This paper is for low-power design of the integrative refraction seismograph dataacquisition system. According to the principle of power consumption constitutesselect low voltage, low power consumption and adjustable devices which have varietyof operating modes to build hardware circuits. The hardware framework is based onAT91RM9200processor of embedded Linux system as the center, Its real powermanagement controller monitors the changes in the operation load of the system todynamically adjust the operating frequency, reducing power consumption of theprocessor’s execution, so as to realize the system performance and powerconsumption of computing optimal control; The power supply modules of system is amulti-voltage and dynamic power management technology, according to the actualoperation of the system to control the power supply situation of each module, and onthis basis, according to the work needs of the system, adjust the different workingstatus of each module running in different periods, thereby reducing the averagepower consumption of the system as a whole; Finally, coordinating software with theoverall framework of dynamic power management.After the low-power design of integrative refraction seismic instrument, testing thepower consumption of the system, the test results show that：the average powerconsumption of system have be effectively reduced by the design method, the averagepower consumption is less than2.5W in the time window mode, and the design goalis achieved. In the long-term continuous operation mode, with different loadschanging when the system is running, the total power consumption also changes, thuseffectively reducing the average power consumption.