一种电子输液报警器的研制

Development of electronic infusion alarm system

目的:针对现有医用输液报警器的一些实际应用缺陷,研制一种新型成本低廉、安全可靠的电子输液报警器。方法:该报警器包括传感模块、控制模块、报警模块及直流电源模块;采用集成运算放大器放大悬臂梁传感器输出的电压信号,由NE555定时器来控制报警时机,报警时的液体质量设置为输液瓶与瓶中液体总质量的10%。结果:该装置可以在剩余液体质量为总质量10%左右时报警,并且针对目前市面常见的3种输液瓶,设计有3个不同的挡位。结论:整个装置原理易懂,便于医护人员装配使用与维护;成本较低,可较好地满足广大人群的医疗需求,并且体积小,耗电少,便于医院固定使用,可在各型医院、诊所推广使用。

Objective To develop an electronic infusion alarm system with low cost and high safety and reliability.Methods The system was composed of modules of sensor, control, alarm and DC power supply. The integrated operational amplifier was used to amplify the voltage signals from the cantilever sensor, and NE555 timer controlled the system give out alarm when 10% liquid remained in the bottle. Results The system could alarm when 10% liquid remained in the bottle, and three gears were designed for the common infusion bottles in the market. Conclusion The system is easy to operate and maintain, and thus can be popularized in all hospitals and clinics.