Design of control system for 1470-nm high-power semiconductor laser lipolysis device

Ning-ning DONG; Jin-jiang CUI; Jian-gen XU; Jie XU

doi:10.3788/OPE.20182608.1896

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Design of control system for 1470-nm high-power semiconductor laser lipolysis device

Laser Spectroscopy | 更新时间：2020-08-13

- Design of control system for 1470-nm high-power semiconductor laser lipolysis device
- Optics and Precision Engineering Vol. 26, Issue 8, Pages: 1896-1903(2018)
- 作者机构：
  
  中国科学院苏州生物医学工程技术研究所, 江苏苏州 215163
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20182608.1896
  CLC： TN248.4
- Received：23 April 2018，
  
  Accepted：23 May 2018，
  
  Published：25 August 2018
- 稿件说明：
移动端阅览
Ning-ning DONG, Jin-jiang CUI, Jian-gen XU, et al. Design of control system for 1470-nm high-power semiconductor laser lipolysis device[J]. Optics and precision engineering, 2018, 26(8): 1896-1903.
DOI：

Ning-ning DONG, Jin-jiang CUI, Jian-gen XU, et al. Design of control system for 1470-nm high-power semiconductor laser lipolysis device[J]. Optics and precision engineering, 2018, 26(8): 1896-1903. DOI： 10.3788/OPE.20182608.1896.

摘要

为了实现大功率激光溶脂仪安全、稳定的输出，设计了1 470 nm大功率半导体激光溶脂的控制系统。对该控制系统所采用的驱动模块、温控模块、主控模块和人机交互模块等进行了研究。首先，采用FPGA实现恒流源的数字控制，功率反馈闭环实现恒功率控制，以提供1 470 nm大功率激光器和弱激光红光指示的驱动，单片机负责实现RS232的协议解析。采用数字模拟PID混合控制，根据NTC的反馈对TEC进行驱动实现激光器温度控制。设计了基于ARM Cortex-M3架构的STM32F系列微处理器主控模块和人机交互模块，实现了相关数据的输出显示与存储、触摸屏驱动及响应以及各接口控制。最后，利用MDK平台编写控制软件并对整机控制系统进行联调和测试。实验结果表明：整机输出功率与设置功率的偏差小于2%，安全性能符合国家医用电气安全通用标准的要求。该系统能够满足1 470 nm大功率半导体激光溶脂仪的稳定可靠、安全性高、抗干扰能力强等要求。

Abstract

A control system for 1470-nm high-power semiconductor laser lipolysis was designed to realize safe and stable operation. The driving module

temperature control module

main control module

and man-machine interaction module of the control system were studied. First

a field-programmable gate array and a power feedback loop were used to realize a digitally controlled constant current source and constant power control

respectively

to drive the 1470-nm high-power laser and weak laser red indicator. SCM was responsible for the implementation of RS232 protocol analysis. Second

the digital analog proportional-integral-derivative control was used to drive a thermoelectric cooler according to the feedback of the negative temperature coefficient to realize the temperature control of the laser. Then

the microprocessor-based master control module and human-computer interaction module were designed to realize the display and storage of the output data and the driving of the touch screen. Finally

the Microcontroller Development Kit platform was used to carry out intermodulation and testing of the whole machine control system. The experimental results show that the deviation between the output power and the set power is less than 2%

and the safety performance of the entire device conforms to the national standard of medical electrical safety. The proposed control system can satisfy the requirements of 1470-nm high-power semiconductor laser lipolysis and ensure high safety and strong antijamming and stabilization.

关键词

Keywords

references

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