一种用于农田激光定位的激光接收器的设计  

Design of a laser receiver used for farmland laser location

作　　者：罗亚辉[1,2] 蒋蘋[1,2] 胡文武[1] 吴畏[1] 

机构地区：[1]湖南农业大学工学院,湖南长沙410128 [2]湖南省现代农业装备工程技术研究中心,湖南长沙410128

出　　处：《湖南农业大学学报（自然科学版）》2013年第5期549-553,共5页Journal of Hunan Agricultural University(Natural Sciences)

基　　金：国家科技支撑计划项目(2011BAD20B08);湖南省科学技术厅项目(2013NK2004);湖南省教育厅重点项目(12A063)

摘　　要：为研制适于南方水田小面积作业的小型农机定位系统,设计了一套用于农田激光三点定位系统的激光接收器。激光接收器通过靶标随动机构实时调整接收靶的回转角度,确保其有效接收激光发射源发射的信号;为准确识别靶标上的激光光斑中心,建立了基于算术平均值滤波算法、中值滤波算法和α–β滤波算法的激光光斑预处理算法。将激光接收器安装在插秧机上进行激光接收动态试验,结果表明,当插秧机在距离激光发射器约100 m处以5、12、20 cm/s速度运动时,激光接收器均能准确接收激光发射器发射的激光信号,并识别着靶信息,实时反映出插秧机的运动状态。To develop a small agricultural machine location system for small paddy fields in the south of China, we have designed a laser receiver for farmland laser ＆ three point location system. The laser receiver adjusts its receiving target rotation angle in real time through the servo mechanism, to ensure that it can effectively receive the signal transmitted from the laser emission source. Meanwhile, in order to accurately identify the laser spot center of the target, we have studied, the laser spot preprocessing algorithms based on the arithmetic mean filter algorithm, median filter algorithm and α-β filter algorithm. The laser receiver was fixed on the transplanter and tested dynamically. The result shows that the laser receiver can receive and recognize the laser signal accurately when the transplanter moves at different speeds such as 5,12,20 cm/s in the distance of 100 m, in the meantime, it can reflect the moving state of the transplanter in real time.

关 键 词：双激光源 农机定位系统 激光接收器 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]