CAJ | 학술논문

基于超声波测距的定位技术以其精度高、范围广和性能稳定等优点,在无线传感器网络中广泛应用。为了实现较大范围的高精度定位,采用TDOA的测距技术设计了满足远距离测量和二维全向测距的六元超声波传感器阵列系统,实现了无锚节点的无线传感器网络中节点的高精度定位和实时监控。测距实验结果表明,该系统的测量距离最远为16 m,平均测距误差为0.14%；定位实验结果表明,10个节点可以在3 min内完成全部组网和定位,平均定位误差约为23.74 cm。
기우초성파측거적정위기술이기정도고、범위엄화성능은정등우점,재무선전감기망락중엄범응용。위료실현교대범위적고정도정위,채용TDOA적측거기술설계료만족원거리측량화이유전향측거적륙원초성파전감기진렬계통,실현료무묘절점적무선전감기망락중절점적고정도정위화실시감공。측거실험결과표명,해계통적측량거리최원위16 m,평균측거오차위0.14%；정위실험결과표명,10개절점가이재3 min내완성전부조망화정위,평균정위오차약위23.74 cm。
For the high accuracy,wide range and stable performance,the ultrasonic positioning technology is becom-ing an important research point in wireless sensor networks. This paper presents a six-element array ultrasonic sensor system which meets long distance measurements and 2D omnidirectional ranging based on TDOA technology. It also implements high-precision positioning and real-time monitoring in a anchor-free WSN. The ranging experi-ment result shows that the furthest distance measurement is 16 meters and the average distance measurement error is 0.14 %;The positioning experiment result shows that 10 nodes can complete networking and positioning in 3 min, the average positioning error is 23.74 cm.