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Χαρακτηριστικά προιόντος:
Ultrasonic ranging module HC - SR04 provides 2cm - 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:
(1) Using IO trigger for at least 10us high level signal,
(2) The Module automatically sends eight 40 kHz and detect whether there is a pulse signal back.
(3) 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,
Προδιαγραφές |
Working voltage: |
5V |
Working Current: |
15mA |
Working Frequency: |
40Hz |
Max Range: |
4m |
Min Range: |
2cm |
Measuring Angle: |
15 degree |
Rectifier: |
Non-Synchronous Rectification |
Trigger Input Signal: |
10uS TTL pulse |
Echo Output Signal: |
Input TTL lever signal and the range in proportion |
Size: |
45*20*15mm |
Eπιπρόσθετες φωτογραφίες: |
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