Ma Hongbin, Luo Yuan, He Yan, Pan Shiguang, Ren Lihong, Shang Jianhua
School of Information Science and Technology, Donghua University, Shanghai 201620, China.
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China.
Sensors (Basel). 2022 Mar 10;22(6):2146. doi: 10.3390/s22062146.
A short-range, compact, real-time pulsed laser rangefinder is constructed based on pulsed time-of-flight (ToF) method. In order to reduce timing discrimination error and achieve high ranging accuracy, gray-value distance correction and temperature correction are proposed, and are realized with a field programmable gate array (FPGA) in a real-time application. The ranging performances-such as the maximum ranging distance, the range standard deviation, and the ranging accuracy-are theoretically calculated and experimentally studied. By means of these proposed correction methods, the verification experimental results show that the achievable effective ranging distance can be up to 8.08 m with a ranging accuracy of less than ±11 mm. The improved performance shows that the designed laser rangefinder can satisfy on-line ranging applications with high precision, fast ranging speed, small size, and low implementation cost, and thus has potential in the areas of robotics, manufacturing, and autonomous navigation.
基于脉冲飞行时间（ToF）方法构建了一种短程、紧凑、实时脉冲激光测距仪。为了减少定时鉴别误差并实现高精度测距，提出了灰度值距离校正和温度校正，并在实时应用中通过现场可编程门阵列（FPGA）实现。对最大测距距离、距离标准偏差和测距精度等测距性能进行了理论计算和实验研究。通过这些提出的校正方法，验证实验结果表明，可实现的有效测距距离可达8.08 m，测距精度小于±11 mm。性能的提升表明，所设计的激光测距仪能够满足高精度、快速测距速度、小尺寸和低实现成本的在线测距应用，因此在机器人技术、制造和自主导航等领域具有潜力。
