脉冲式激光测距仪计时系统设计与实现

摘要

激光测距技术被广泛应用于扫描成像、模式识别、目标跟踪等领域,快速、高精度的测距计时是其实现的基础.为满足上述领域的应用需要,对脉冲式激光测距的高速计时技术进行了研究.采用基于数字式内插测量方法以及高精度时间间隔测量芯片和数据处理芯片,设计并实现了激光测距仪的计时模块与数据传输模块.试验结果表明,该计时系统具有较高的测量精度,可实现测距信号的高速计算以及将测距数据快速传递至上位机的功能,对模式识别、跟踪目标等领域相关功能的实现具有应用价值.%The technology of laser distance measurement is widely applied in scan imaging, pattern recognition, and target tracking areas, while its foundation is the fast speed and high precise distance measurement and timing. To satisfy the applicable demands in above areas, the high speed timing technology of pulsed laser finding is researched. By adopting the data processing chip and the high precision time interval measuring chip based on digital interpolation method, the timing module and data transmission module for laser range finder is designed and implemented. The test results reveal that the timing system possesses higher measurement accuracy, and is able to implement high speed calculation for distance measuring signals and high speed transmission of the distance measuring data to host computer, it features applicable value for implementing corresponding functions in pattern recognition and target tracking areas.