ultrasonic transducer

Ultrasonic Sensor Module Technical Specification 1,Product synopsisDYP-ME007 ultrasonic sensor is non-contactdistance measurement module, whichis also compatible with electronic brick.It’s designed for easy modular projectusage with industrial performance. 2,Product principle Ultrasonic ranging module DYP-ME007 provides 3cm - 400cm non-contact measurement function, the ranging accuracy can reach to 3mm. The modules includes ultrasonic transmitters, receiver and control circuit. The basic principle of work: l Using IO trigger for at least 10us high level signal, l The Module automatically sends eight 40 kHz and detect whether there is a pulse signal back. l IF the signal back, through high level , time of high output IO duration is the time from sending ultrasonic to returning. Test distance = (high level time×velocity of sound (340M/S) /2 3,Features Detecting range: 3cm-4cmBest in 30 degree angleElectronic brick compatible interface5VDC power supplyBreadboard friendlyDual transducerArduino library ready 4,Specifications Supply voltage5 vGlobal Current Consumption15 mAUltrasonic Frequency40k HzMaximal Range400 cmMinimal Range3 cmResolution1 cmTrigger Pulse W idth10 μsOutline Dimension43x20x15 mm5,Sequence chartThe DYP-ME007 Timing diagram is shown below. You only need to supply a short 10uS pulse to the trigger input to start the ranging. The DYP-ME007 will send out an 8 cycle burst of ultrasound at 40khz and raise its echo line high. It then listens for an echo, and as soon as it detects one it lowers the echo line again. The echo line is therefore a pulse whose width is proportional to the distance to the object. By timing the pulse it is possible to calculate the range in inches/centimeters or anything else. If nothing is detected then the DYP-ME007 will lower its echo line anyway after about 36mS