CAJ | 학술논문

为了让驾驶员及时获得不良天气下高速公路车辆限速信息，设计了基于ZigBee和GSM的高速公路自适应限速系统。系统中MSP430对气象数据进行处理，并根据限速准则计算出当前天气条件下的限速信息，若判断和上1 min计算的值不同则通过GSM网络更新路边装置限速信息。当车辆行驶至路边装置的ZigBee网络范围内时就会收到限速信息，若限速信息发生变化则车载装置液晶显示并语音播报。测试结果表明：在路边装置ZigBee网络范围内车载装置能够正常接收到限速信息。
위료양가사원급시획득불량천기하고속공로차량한속신식，설계료기우ZigBee화GSM적고속공로자괄응한속계통。계통중MSP430대기상수거진행처리，병근거한속준칙계산출당전천기조건하적한속신식，약판단화상1 min계산적치불동칙통과GSM망락경신로변장치한속신식。당차량행사지로변장치적ZigBee망락범위내시취회수도한속신식，약한속신식발생변화칙차재장치액정현시병어음파보。측시결과표명：재로변장치ZigBee망락범위내차재장치능구정상접수도한속신식。
In order to let drivers acquire highway speed limit information,we design the adaptive speed limit system of highway based on ZigBee and GSM. MSP430 microcontroller deals with meteorological data and calculates speed limit information on the highway in current weather condition according to speed limit formula.If it is different from the value calculated in last minute,speed limit information of roadside devices will be updated by GSM network. Vehi-cle will receive speed limit information when driving to the scope of ZigBee network of roadside device,if information is changed,vehicle-mounted device will display it on LCD screen and broadcast recording. Test result shows that:ve-hicle-mounted devices can receive speed limit information normally in the scope of ZigBee network of roadside device.