| 一种激光雷达探测模块控制电路的设计和制作 |
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| 引用本文： | 冯 攀∗,张站业,丁红波. 一种激光雷达探测模块控制电路的设计和制作[J]. 大气与环境光学学报, 2022, 17(4): 465-475 |
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| 作者姓名： | 冯 攀∗ 张站业 丁红波 |
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| 作者单位： | 1.安徽新闻出版职业技术学院, 安徽 合肥 230601;2.中国科学院合肥物质科学研究院安徽光学精密机械研究所, 中国科学院大气光学重点实验室,安徽 合肥 230031;3.中国科学技术大学, 安徽 合肥 230026 |
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| 基金项目： | Supported by Anhui Provincial Higher Education Provincial Quality Project (安徽省高等学校省级质量工程, 2019jyxm0774), Key Researchand Development Program of Anhui Province (安徽省重点研究与开发计划, 202004b11020012) |
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| 摘 要： | 传统上使用机械旋钮调节光电倍增管 (PMT) 增益的方法不仅存在需要人为依据经验手动操作、准确性差等弊端, 而且 PMT 增益易受温度影响, 需要根据环境温度动态调整 PMT 的高压, 这些局限性都不利于其在激光雷达系统中的应用。为了便于对 PMT 进行增益调节并保持 PMT 增益的稳定, 设计了可用于激光雷达系统的 PMT 控制电路板, 该电路可使用计算机实现增益调节和高压的温度自适应调节, 从而精简了信号探测系统的结构与体积, 提升了信号的稳定性。本工作采用内置高压电源的 H10721-20 型 PMT, 并基于 STM32 单片机结合数模转换器 (DAC) 和外围电路完成控制电路板的设计并进行实际制作。进一步对使用电位器调节的 PMT 和利用所提出的控制方法进行调节的 PMT 进行了高压稳定性的对比实验, 并对使用 PMT 控制电路板的米散射激光雷达的性能进行了测试。实验结果表明所提出的控制方法可实现更稳定的 PMT 增益控制, 设计的 PMT 控制电路板具有良好的可靠性。
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| 关 键 词： | 激光雷达 光电倍增管 增益控制 数模转换器 |
| 收稿时间： | 2021-05-06 |
| 修稿时间： | 2022-07-01 |
Design and fabrication of control circuit for lidar PMT detection module |
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| FENG Pan∗,ZHANG Zhanye,DING Hongbo. Design and fabrication of control circuit for lidar PMT detection module[J]. Journal of Atmospheric and Environmental Optics, 2022, 17(4): 465-475 |
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| Authors: | FENG Pan∗ ZHANG Zhanye DING Hongbo |
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| Affiliation: | 1.Anhui Vocational College of Press and Publishing, Hefei 230601, China;2.Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, HFIPS,Chinese Academy of Sciences, Hefei 230031, China;3.University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | The traditional method of adjusting the gain of photomultiplier tube (PMT) with mechanical knobs notonly has disadvantages of manual operation based on experience and poor accuracy, but also has a disadvantagethat the gain of PMT is susceptible to temperature and the high voltage of PMT needs to be dynamically adjustedaccording to the ambient temperature. These limitations are not conducive to its application in lidar system. In orderto adjust the gain of PMT easily and keep the stability of PMT gain, the control circuit board of PMT applicable tolidar system is designed to realize gain regulation and high-voltage temperature self-adaptive adjustment by computer, thus simplifying the structure and volume of the signal detection system and improving the stability of the signal.In this work, H10721-20 type PMT with built-in high voltage power supply is used, and the corresponding controlcircuit board based on STM32 single chip microcomputer, digital-to-analogue converter and peripheral circuit isdesigned and manufactured. Further, the high voltage stability of PMT controlled by potentiometer is comparedwith that of PMT adjusted by the control method proposed in this work, and then the performance of Mie scatteringlidar using the designed PMT control circuit board is tested. The experimental results show that the control methodproposed in this work can achieve more stable PMT gain control, which indicates that the designed PMT controlcircuit board has good reliability. |
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| Keywords: | lidar photomultiplier tube gain control digital-to-analogue converter |
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