Label:Yes
4,Test distance = ((Duration of high level)*(Sonic :340m/s))/2.
1,This module can accurately measure distance using the principle of ultrasonic ranging. Can compete with ultrasonic ranging modules such as SRF05 and SRF02. Ultra close blind spot (2cm(0.79in)), this module fully accommodates GH-311 anti-theft module
5,This product has a simple usage method. If a control port sends a high level of more than 10US, you can wait for the high level output at the receiving port As soon as there is an output, the timer can be turned on to start counting. When this port becomes low, the timer value can be read, which is the time for this distance measurement and the distance can be calculated By continuously measuring the cycle, you can move the measured values
3,HC-SR04 Power Supply : 5V DC; Quiescent Current : <2mA,; Effectual Angle: <15° ; Detection Distance : 2cm(0.79in)~450 cm(177.17 in); Resolution : 0.3 cm(0.12 in)
2,The HC-SR04 ultrasonic sensor can send eight 40 kHz and detect whether there is any pulse signal back.If it back, a high level signal will be outputed by IO, and the duration of the signal is the time from sending ultrasonic to returning
Specification:
Operating Voltage: DC5V
Static Current: <2mA
Level Output: High 5V, Low 0V
Sensing Angle: ≤15°
Detecting Distance: 2cm(0.79in)-450cm(177.17in)
Blind spot: minimum 2cm(0.79in)
Accuracy: 0.3cm(0.12in)
Wiring: VCC, trig(control terminal), echo(reception terminal), out(empty), GND
Size:18*12mm(0.71*0.47in)
Color: blue
Module Working Principle:
1. Adopt IO trigger through supplying at least 10us sequence of high level signal.
2. The module automatically send eight 40khz square waves and automatically detect whether receive the returning pulse signal.
3. If there is signals returning, output high level through IO, the duration time of high level is the time of that from the ultrasonic transmitting to receiving. Measuring distance = (high level time * sound velocity (340M/S) / 2.
Package list:
5 x Ultrasonic Ranging Module
Note:
1. The module should be inserted in the circuit before power-on, which avoid producing high level of misoperation; If not, then power again.
2. The TRIP pin is an internal pull-up 10K resistor. Pull down the TRIP pin by the IO port of the microcontroller and give a pulse signal of 10us or more.
3. The OUT pin is the switch output pin when the module is used as the anti-theft module. The distance measuring module does not need this pin!
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