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Главная » Датчики и сенсоры » Расстояние и движение

HC-SR04 Ultrasonic Sensor Distance Measuring Module

Рейтинг: 5.0/19
2.38 AZN
  • Артикул:
  • Наличие: 11
  • Единица: шт.
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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:

Using IO trigger for at least 10us high level signal,
The Module automatically sends eight 40 kHz and detect whether there is a pulse signal back.
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
Wire connecting direct as following:
1. 5V Supply
2. Trigger Pulse Input
3. Echo Pulse Output
4. GND

If you are sourcing a ultrasonic ranging module , the HC-SR04 is good choose . Its stable performance and high ranging accuracy  make it a popular module in electronic market .

Compared to the Shape IR ranging module , HC-SR04 is more inexpensive than it . But it has the same ranging accuracy and longer ranging distance.

More details:
power supply :5V DC
quiescent current : <2mA
effectual angle: <15°
ranging distance : 2cm – 500 cm
resolution : 0.3 cm

There are 4 pins out of the module : VCC , Trig, Echo, GND . So it’s a very easy interface for controller to use it ranging. The all process is : pull the Trig pin to high level  for more than 10us impulse , the module start ranging ; finish ranging , If you find an object in front , Echo pin will be high level , and based on the different distance, it will take the different duration of high level. So we can calculated the distance easily :

Distance = ((Duration of high level)*(Sonic :340m/s))/2 

HC-SR04 Ultrasonic sensor

Добавил: mehri1982, Пн, 2018-11-19

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  • 1 AZN = 54.052 Рубль
  • 10 AZN = $5.872
  • 10 AZN = 5.484 Евро
  • 1 AZN = 19.066 TL
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