CAJ | 학술논문

光热治疗对生物组织温度的准确性和稳定性具有较高要求，针对该应用设计了基于ARM处理器和嵌入式Linux操作系统的LED光热治疗系统。系统包括光源模块、测温模块、LED驱动模块、微处理器模块及人际交互模块。根据光热治疗的实际需要采用积分分离PID算法提高了治疗中组织温度的控制品质。选用离体组织样品进行光热治疗模拟实验，实验结果表明系统温度控制具有较低的调节时间和超调量，稳态误差为±0．5℃，能较好满足光热治疗对温度控制的要求。
광열치료대생물조직온도적준학성화은정성구유교고요구，침대해응용설계료기우ARM처리기화감입식Linux조작계통적LED광열치료계통。계통포괄광원모괴、측온모괴、LED구동모괴、미처리기모괴급인제교호모괴。근거광열치료적실제수요채용적분분리PID산법제고료치료중조직온도적공제품질。선용리체조직양품진행광열치료모의실험，실험결과표명계통온도공제구유교저적조절시간화초조량，은태오차위±0．5℃，능교호만족광열치료대온도공제적요구。
In photothermal therapy the request for accuracy and stability of biological tissues＇ temperature is very high. For the application, this paper presents the design of a LED photothermal therapeutic system based on ARM processor and embedded Linux operating system. The system includes light source module, infrared thermometer module, LED drive module, microprocessor modtde and interpersonal interaction module. According to practical need, the control quality of tissue temperature is enhanced using the integral separation PID algorithm. The vitro tissue sample is selected in the photothermal therapy experiment. The experimental results show that the settling time and peak overshoot of the temperature control system arelow, and the steady - state error is ±0.5℃ The design can meet the requirement of temperature control in the photothermal therapy.