手术室高频电刀灼伤风险热报警传感控制器设计

摘要

目的:为了避免手术室中高频电刀灼伤的风险,进行热报警传感控制器设计.方法:在Visual DSP平台下进行控制器的系统开发,提出一种基于多线程温度反馈调节的手术室高频电刀灼伤风险热报警传感控制方法.首先分析控制器的功能技术指标,构建控制器的总体构架模型;然后设计控制器的温度反馈调节控制律,采用模糊比例-积分-微分(proportion-integral-derivative,PID)控制算法进行热报警传感控制改进.其次对控制器的硬件进行模块化设计,对温度热传感AD模块、基线漂移抑制模块、高压调节模块、中断模块以及报警通信模块电路进行设计,并对软件流程进行设计.最后通过系统仿真试验进行性能测试.结果:采用该控制器进行手术室高频电刀灼伤风险热报警传感控制,负载性能较好,高频基线基本在零电平上,达到了补偿要求;且抗干扰能力较强,精确度高,实现了多线程温度调节和过热中断,提高了高频电刀的安全控制能力.结论:该控制器性能较好,在手术室高频电刀灼伤风险报警方面具有一定的实用性.%Objective To design a thermal alarm sensing controller to avoid burns by the high-frequency electric knife in the operating room. Methods The system development of the controller was executed under Visual DSP, and a thermal alarm sensing control method based on multi-thread temperature feedback regulation was proposed for eliminating the risk of the burns by the high-frequency electric knife in the operating room. The functional and technical indexes of the controller were analyzed to construct its overall framework model, the control law was designed for the temperature feedback control of the controller, and proportion-integral-derivative (PID) control algorithm was applied to the improvement of the controller. Modular design was involved in the controller hardware which was composed of the temperature sensing AD module, baseline drift suppression module, high voltage adjust module, interrupt module and alarm communication circuit. Software process was designed, and then simulation experiment was carried out to test the performances of the controller. Results The controller gained advantages in high loading performance and high-frequency baseline at zero level to realize compensation, and was gifted with high anti-interference ability and precision when fulfilling the safety control of the high-frequency electric knife by multi-thread temperature regulation and overheating interrupt. Conclusion The controller behaves well in the alarm against the burns by the high-frequency electric knife in the operating room.