传感技术学报
傳感技術學報
전감기술학보
Chinese Journal of Sensors and Actuators
2015年
9期
1328-1334
,共7页
在线测量%TOF三维成像%Peer-to-PeerMESH自组网%体积小%低功耗设计
在線測量%TOF三維成像%Peer-to-PeerMESH自組網%體積小%低功耗設計
재선측량%TOF삼유성상%Peer-to-PeerMESH자조망%체적소%저공모설계
online measurement%TOF 3D imaging%Peer-to-Peer MESH network%small in size%low power consump?tion design
为提高现有的潮汐及水位仪器(如浮子式、超声波式、雷达式水位计)在线测量的实时性和稳定性,减小仪器的体积、成本和功耗,设计了一种基于TOF(Time of Flight,即飞行时间法)三维成像测距并结合XBEE MESH技术的无线网络测量系统.传感节点使用准直的850 nm红外LED发射光源,采用ARM+CPLD控制和提取EPC610 TOF成像芯片的有效测量数据并进行实时校正和计算,单个测量节点能实现1 m~7 m范围内误差±1.25 cm,测量速率为500次/秒的高速测量,其尺寸只有2.5 cm×2.5 cm大小.无线网络部分采用Peer-to-Peer MESH自组织网络结构,采用无线模块主动唤醒传感器,同步和异步休眠相结合的控制形式大大降低了功耗.
為提高現有的潮汐及水位儀器(如浮子式、超聲波式、雷達式水位計)在線測量的實時性和穩定性,減小儀器的體積、成本和功耗,設計瞭一種基于TOF(Time of Flight,即飛行時間法)三維成像測距併結閤XBEE MESH技術的無線網絡測量繫統.傳感節點使用準直的850 nm紅外LED髮射光源,採用ARM+CPLD控製和提取EPC610 TOF成像芯片的有效測量數據併進行實時校正和計算,單箇測量節點能實現1 m~7 m範圍內誤差±1.25 cm,測量速率為500次/秒的高速測量,其呎吋隻有2.5 cm×2.5 cm大小.無線網絡部分採用Peer-to-Peer MESH自組織網絡結構,採用無線模塊主動喚醒傳感器,同步和異步休眠相結閤的控製形式大大降低瞭功耗.
위제고현유적조석급수위의기(여부자식、초성파식、뢰체식수위계)재선측량적실시성화은정성,감소의기적체적、성본화공모,설계료일충기우TOF(Time of Flight,즉비행시간법)삼유성상측거병결합XBEE MESH기술적무선망락측량계통.전감절점사용준직적850 nm홍외LED발사광원,채용ARM+CPLD공제화제취EPC610 TOF성상심편적유효측량수거병진행실시교정화계산,단개측량절점능실현1 m~7 m범위내오차±1.25 cm,측량속솔위500차/초적고속측량,기척촌지유2.5 cm×2.5 cm대소.무선망락부분채용Peer-to-Peer MESH자조직망락결구,채용무선모괴주동환성전감기,동보화이보휴면상결합적공제형식대대강저료공모.
In order to improve the real-time performance and stabilityof the existing tide and water level measuring instrument,such as float type,ultrasonic,radar level gauge,reduce the size,the cost and power consumption of the instrument,this paper describes the design of a wireless sensor network system based on TOF(Time of Flight) three-dimensional imaging and XBEE MESH Technology. The sensor nodeuses 850 nm focused infrared LED as emission source,the ARM + CPLD architecture to control and extract the effective measurement data of EPC610 TOF imaging chip for real-time correction and calculation. A single measurement node can achieve an er-ror of± 1.25 cm at the range of 1 m~7 m,high-speed measurement rate at 500 times/sec and its size is only 2.5 cm× 2.5 cm. The wireless network uses Peer-to-Peer MESH self-organizing technology,using the wireless module to awaken the sensoractively and the combination of synchronous and asynchronous sleep mode ,thus greatly reduced the power consumption.
