Design Of Collection And Transmission System For Earthquake

Earthquake has long caused a great loss to the country's economic construction and people's lives and property. The most economical and effective method to mitigate the earthquake damage is accurate, real-time prediction of earthquakes'time and place.The establishment of real-time, stable and wide range of signal collection and transmission of earthquake monitoring network is the basis for earthquake prediction. Conventional earthquake data transmission has such drawbacks as low efficiency, high cost and slow data transmission. With the development of communication, network and computer technology, especially the full maturity of GPRS network, the establishment of a real-time earthquake signals collection and transmission system based on GPRS has become an excellent program.After the analysis of the advantages of GPRS communication technology, an earthquake monitoring system based on GPRS technology is proposed, an overall framework of the system is designed, working principle of the various parts of the system is introduced and at the same time its hardware and software is designed in detail. The monitoring system consists mainly of two parts: earthquake data acquisition terminal and the monitoring center. Data acquisition terminal is modularized and consists of the main controller module, data acquisition module, GPRS module, GPS module, data storage module and the local human-computer interaction module, etc. The microcontroller STM32F103VCT6 with ARM Cortex-M3 core and Siemens GPRS module MC39i is the core of the data collection terminal, the main purpose of which is to realize data acquisition and GPRS wireless transmission. As for the software of the data collection terminal, TCP/IP protocol stack is embedded in the main controller, and signal acquisition, SD card memory, GPS data reception, human-computer interaction is designed. A PC with fixed IP address plays the role of monitoring center, of which the software was programmed by Windows sockets in VC ++6.0 environment, is responsible for data reception, preservation and analysis. The system power was a DC uninterruptible power supply based on solar panels.Experimental results show that the data collection and transmission control system can achieve the real time, stable, low-power wireless data monitoring, which makes it has a good reference value in the application of earthquake monitoring system .