A NOVEL LASER RECEIVER USED FOR LASER-CONTROLLED LAND LEVELING SYSTEM
Laser receiver was a key component of the laser-controlled land leveling system. In order to obtain better quality in laser signal detecting, operating range, stability and noise deduction, a novel design of a laser receiver based on integrated IC was developed. Red organic glasses were used as the in-light window, which could greatly reduce the background light into the laser receiver. Interference filters were also used at the laser receiver to further reduce the background light. Photo-electric cells were used to transform light signal into electrical signal. The low-noise pre-amplifier and main amplifier based on integrated amplifier was used to amplify the weak electrical signal effectively. The wave shaping circuit was employed to achieve better signal conditioning from spike pulse signal to digital TTL signal. The widening circuit was used to stretch the pulse width in order to be processed by the follow-up circuit more easily. Field experiments were carried out. The results show that the receiver work stable within 150m for all directions. The vertical operating ranger is 28.4cm which allows an accuracy of 2cm in land leveling.
Laser-controlled Land Leveling Laser Receiver Pre-amplifier Circuit Wave Shaping Circuit Widening Circuit
Xingfu Xie Gang Liu Xiaozhe Lang Qingkuan Meng
Key Laboratory of Modern Precision Agriculture System Integration Research,ChinaAgricultural Univers Key Laboratory of Modern Precision Agriculture System Integration Research,China Agricultural Univer
国际会议
北京
英文
1-6
2009-10-14（万方平台首次上网日期，不代表论文的发表时间）