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首页> 外文会议>2011 International Conference on Electric Information and Control Engineering >High-precision infrared pulse laser ranging for active vehicle anti-collision application
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High-precision infrared pulse laser ranging for active vehicle anti-collision application

机译：用于主动车辆防撞应用的高精度红外脉冲激光测距

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摘要

In this work, a high-precision infrared pulse laser ranging system based on FPGA and microcontroller Atmel16 is proposed for active vehicle anti-collision application, and the key technologies of this system including optical device, laser receiver component, and time-of-flight stretching component are studied deeply based on the principle of the pulse laser time-of-flight measurement. The light energy transmission is analyzed in detail to choose the proper transmitted and receiver laser diode. Specially, the method of the time stretching based on the charge and discharge of the high-precision capacitor using the constant-current sources is adopted to realize the measurement of time-off-light. The practical running of system prototype and test results show that the precision is ±0.1m, the repetition rate is 1 kHz, and the distance measurement range is up to 60 m from 1.5 m. So, this system can accurately detect the distance between the cars, and can efficiently avoid traffic accident, therefore, this system has greatly practical and economic value.
机译：在这项工作中，提出了一种基于FPGA和微控制器Atmel16的高精度红外脉冲激光测距系统，用于有源车辆防碰撞应用，以及该系统的关键技术，包括光学装置，激光接收器组件和飞行时间基于脉冲激光运动时间测量的原理深度研究拉伸部件。详细分析光能传输以选择适当的发送和接收器激光二极管。特别地，采用了使用恒流源的高精度电容器的充电和放电的时间拉伸的方法来实现时间脱光的测量。系统原型和测试结果的实际运行表明，精度为±0.1米，重复率为1 kHz，距离测量范围距离距离为1.5米。因此，该系统可以准确地检测汽车之间的距离，并且可以有效地避免交通事故，因此，该系统具有很大的实用性和经济价值。

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