面向车载激光雷达光源应用的窄脉冲驱动技术

The Short Pulse Driving Technology For Vehicle Lidar Light Source Application

随着目前车载激光雷达技术发展日渐成熟,为了提高探测精度及探测距离,对激光光源的窄脉冲、高峰值光功率指标要求也随之提高。提出了一种针对激光光源的窄脉冲驱动技术,包括理论分析、参数仿真、试验验证。具体从电路原理进行参数分析,并通过理论建模进行不同参数下的仿真,从仿真结果确定各元器件参数及选型,经过多轮试验验证并优化电路布线及布局,最终实现了窄脉冲驱动。经过装机验证,该窄脉冲驱动技术可以驱动激光光源实现窄脉冲(3ns)、高峰值光功率(80W)光电指标,整机装机应用后,可以提高整机的探测精度及探测距离。

With the development of current vehicle-mounted lidar technology increasingly mature,in order to improve the detection accuracy and detection distance,the laser light source of short pulse,peak value of the light power index requirements are also increased.The short pulse driving technique for laser light source is proposed,including theoretical analysis,parameter simulation and experimental verification.Parameters were analyzed from the circuit principle,and simulation under different parameters was conducted through theoretical modeling.Parameters and selection of components were determined from the simulation results.After multiple rounds of tests,the circuit wiring and layout were optimized,and finally the short pulse driver was realized.After installation,the short pulse driver technology can drive the laser light source to achieve short pulse (3ns) and high peak power (80W) photoelectric index.Combined with the application of the whole machine,the detection accuracy and detection distance of the whole machine can be improved.