基于单片机的激光测距系统设计

Design of laser range system based on single chip microcomputer

为了减小测距误差,提出一种基于单片机的激光测距系统设计方法,首先基于三角测量原理构成测距传感器,以进行实时测量与检测,并对目标激光信号进行小波变换和二进小波变换;然后利用Lipschitz指数检测出激光信号的奇异点位置,并采用正交调制技术对激光光强的幅度进行调制,最后对激光测距目标物体的两路正交信号进行混频和低通滤波处理,消除激光测距系统的附加相移,实现目标物体的激光测距。实验结果表明,该方法能够减小测距误差,满足了实际测量需要。

In order to reduce the measurement error, this paper puts forward a design method of laser ranging system based on single chip. Achieve real-time measurement and detection based on the triangulation principle of sensors. And do the wavelet transform and binary wavelet transform of target laser signal. Then, detect the singularity of the laser signal by the Lipschitz index. Modulate the laser intensity amplitude by the orthogonal modulation technology. Finally process the two orthogonal signals of laser ranging objects through mixing and low-pass filtering to eliminate ad- ditional phase shift of laser rangefinder and realize the laser ranging. The experimental results show that this method can reduce the ranging error and meet the needs of actual measurement.