基于PWM的红外理疗仪器实时温度控制系统设计

Design of real time temperature control system for infrared physiotherapy instrument based on PWM

摘要:

针对传统电控理疗仪器在温度控制精度方面的不足，提出一种基于PWM的红外理疗仪器实时温度控制系统设计。在分析PWM红外温控技术原理的基础上设计了系统的硬件构成，主要包括单片机微处理器、加热模块、温度控制器、直流稳压电源、数码显示器等部分；与硬件结构相匹配给出了理疗仪器实时温控系统的软件工作流程，系统基于PWM技术进行红外信号采样和脉冲宽度调节，实现对红外理疗仪器温度的精准控制。实验结果表明，提出温控系统设计的温度控制偏差低于1.36%，红外信号幅值的输出也更为稳定。

Abstract:

Aiming at the deficiency of temperature control precision of traditional electric-controlled physiotherapy instrument, a real-time temperature control system of infrared physiotherapy instrument based on PWM is proposed. On the basis of analyzing the principle of PWM infrared temperature control technology, the hardware structure of the system is designed, which mainly includes microcontroller, heating module, temperature controller, DC regulated power supply, digital display and so on. Sampling and pulse width adjustment can realize accurate adjustment and control of the temperature of physiotherapy instrument. The experimental results show that the deviation of temperature control system is less than 1.36%, and the performance of infrared signal amplitude is more stable.