Dual ultrasonic detection device

A dual ultrasonic detection device, comprising:

• a housing having a detection chamber therein for containing a liquid to be measured;
• a first ultrasonic reflector disposed on a rigid side wall of the detection chamber and configured to reflect an ultrasonic signal;
• a first ultrasonic detector disposed on a side wall of the detection chamber and opposite to the first ultrasonic reflector, and configured to obtain a first flight time corresponding to an ultrasonic wave transmitted to the first ultrasonic reflector and reflected back;
• a second ultrasonic reflector disposed on an elastic side wall of the detection chamber and configured to reflect an ultrasonic signal, wherein a distance of an outward expansion of the elastic side wall is related to a pressure exerted by the liquid to be measured on the outward expansion;
• and
• a second ultrasonic detector disposed on the side wall of the detection chamber and opposite to the second ultrasonic reflector, and configured to obtain a second flight time corresponding to an ultrasonic wave transmitted to the second ultrasonic reflector and reflected back.