超声波空气探测器的应用研究

Application research on ultrasound air detector

检测输血管路中是否存在气泡对病人的安全非常重要,而输血管路要求空气探测器和管内流体是非接触的.基于这种要求,对几种空气探测方法进行了分析和比较,超声波探测器相对其他探测方法具有可靠性高、抗干扰能力强的特点和优点.只要计算出合适的超声波发射频率,通过逻辑运算电路,超声波空气探测器就能准确地探测输血管路中气泡的有无.

Detecting the air bubble in pipe of blood transfusion is very import ant to the safety of patients.There is a constraint condition that the liquid in pipe of blood transfusion can not be touched with air detector. According to th is kind of request,several air detecting methods were analyzed and compared in this article. The conclusion is that the ultrasound detector is more reliable an d has more capacities for anti-interference than other methods.As long as the r ight transmitting frequency is calculated,the ultrasound air detector can exact ly detect the air bubble in pipe of blood transfusion by logical operation circu it.