Two-line digital ultrasonic wave sensor

The invention relates to a dual-wire digital ultrasonic sensor. Wherein, the anode of sensor emitter is connected to the output of driving module; the input of driving module is connected to the control signal wire A of sensor; two end of echo amplify circuit are connected to two ends of driving module; the earth cord B and the control signal wire A are connected to an energy storage module; saidsensor emitter, driving module, echo amplify circuit and the energy storage module are packed integrated while the control signal wire A and earth cord B are guided out to connect the controller. Theinvention uses generate wires in lower cost, therefore, compared to digital sensor with three or four wires, it can save the cost.