The pressuresensor can be an elastic air bag, and the elastic air bag can be compressed when struck in order to generate air current to impact an air-controlled sounder to sound.
这种压力传感装置之一是一弹性气囊，它受到击打时被压缩，产生气流冲击一个气控发声器，发出声音。
2
The standard medical stethoscope (9) can replace the pulse soundsensor (3), and the blood pressure can be measured by human.