Design Of Based On Embedded Avalanche Hazard Monitoring System

This article studied on the top of the mountain when large amounts of snowcollapsed the avalanche disasters, cause the low frequency vibration below the rate ofmountain land, the vibration frequency is low, vibration displacement and accelerationvalue is small and easily overlooked, so in order to accurately measure the lowfrequency micro displacement acceleration values, so as to realize the real-timemonitoring of vibration the avalanche disaster situation, need three axis accelerationmeasurement method of low frequency and high accuracy rate.Therefore, this article proposes a three shaft frequency displacement accelerationsensor model SCA610-CAHH1G,32bit low power, high performance LPC2378processor as the core, using a12bit ADC ARM7processor built in, to ensure theaccuracy of measurement, can meet the requirement of measuring micro accelerationof low-frequency vibration. Using the method combining software and hardware, theembedded real-time operating system uC/OS-II as the software platform, to realize themeasurement of three axis displacement and acceleration of the low-frequencyvibration. The collected data through the A/D conversion by the system aftertreatment with avalanche alarm threshold value judgments, if the acquisition ofacceleration value is larger than the threshold value of avalanche alarm whenabnormal signal through the ZigBee module will be sent to the avalanche mountainhighway alarm system makes the LED red yellow lamp light, to the hill of pedestriansand vehicles to avalanche warning. The system can be effective on avalanche hazardreal-time monitoring and prompt to road safety, the highway traffic safety, has veryimportant significance to protect people’s lives and property safety. The system includes two parts: the front-end monitoring module, alarm moduleof mountain highway. The front-end monitoring module for three axis accelerometerdata acquisition and processing system, is located in the side of the road near the topof the mountain, which is the real-time acquisition of accelerometer value changes,the collected acceleration value judgment, monitoring whether the avalanche disasters,when acceleration collected value no abnormal phenomenon intervals by the GPRSmodule to the remote control center sends acceleration sensor to the normal vibrationmountain value, convenient in the future research of avalanche hazard results forreference. At the same time, the GPRS module is also receiving the remote controlcommand center, according to the instructions for the corresponding system settings.The terminal monitoring module to the avalanche disaster occurs, the ZigBeetransmission module and alarm module sends the abnormal signal hill road, Hill Roadalarm module through the ZigBee transmission module receives and analyzes theabnormal signal value, indicating the red and yellow LED headlights flashingalternately, in this way to pedestrians and vehicles to avalanche warning, at the sametime the front-end monitoring module transmits the monitoring site site name, anavalanche current system time and vibration acquisition of outliers together throughthe GPRS module to send data to remote control center display, so as to provideinformation for subsequent rescue. The power module supplies power for the wholesystem, the battery is to ensure that in the rainy day of the entire system can runnormally, and the solar energy plate of the charging controller provides Everfountpower to charge the storage battery, this system is suitable for road safety real-timemonitoring on large amount of snowfall and nobody tube avalanche disaster usuallyregion.