基于CC2530模块的超声波室内定位系统  

An indoor positioning system using ultrasonic wave based on CC2530 module

作　　者：张小龙[1] 郑晟[1] 田建艳[1] 王芳[1] 李哲[1] 

机构地区：[1]太原理工大学信息工程学院,太原030024

出　　处：《黑龙江畜牧兽医》2016年第2期102-105,共4页Heilongjiang Animal Science And veterinary Medicine

基　　金："863"国家高技术研究发展计划项目(2013AA102306)

摘　　要：为了研究猪只运动轨迹与行为之间的关系,试验设计了一种基于CC2530模块的超声波室内定位系统。该系统利用CC2530强大的无线通信功能构建发射与接收节点,利用超声波信号与射频信号传播速度的不同,通过到达时间差法(TDOA)测量发射与接收节点之间的距离,并利用相交园弦线法进行定位计算;为了减小定位误差,引入一元线性回归拟合TDOA与距离的关系,提高了测距的精度;并引入距离滤波算法,减小了定位出现较大误差的概率。结果表明:该定位系统定位精度在3 cm左右。To study the relationship between motion trajectory and behaviors of pigs, an indoor positioning system using ultrasonic wave based on CC2530 module was designed in the test. Transmitting node and receiving node were constructed using the powerful wireless communication function, the distance between the transmitting node and receiving node was measured through the method of arrival time difference （TDOA） u- sing the difference of propagation velocity between ultrasonic signal and radio frequency signal, and then a method of intersectant circle chord was used for positioning calculation. A linear regression method was introduced to fit the relationship TDOA and distance in order to reduce the positioning en＇or, which improved the accuracy of distance measurement. Meanwhile, a distance -filtering algorithm was also introduced to re- duce the probability of a larger error in the positioning. The results showed that the positioning accuracy of the system is about 3 cm.

关 键 词：CC2530 定位系统 到达时间差 相交圆弦线法 定位精度 一元线性回归方程 距离滤波 

分 类 号：S828[农业科学—畜牧学]