Design of thermal alarm sensing controller of high-frequency electric knife against risk of burns
10.7687/j.issn1003-8868.2017.11.010
- VernacularTitle:手术室高频电刀灼伤风险热报警传感控制器设计
- Author:
bang Qin WANG
1
;
hua Xiao LU
;
xuan Li YANG
Author Information
1. 宁夏第五人民医院器械科
- Keywords:
operation room;
high-frequency electric knife;
burn risk;
thermal alarm;
sensing;
controller
- From:
Chinese Medical Equipment Journal
2017;38(11):10-14,19
- CountryChina
- Language:Chinese
-
Abstract:
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.
