1. Description
the stability of the module performance, measure the distance accurately. Can and foreign SRF05, SRF02 ultrasonic distance measuring module and other comparable. Module precision, blind spots (2cm) super close, stable ranging success is to market this product in accordance with the strong!
2 main technical parameters
1: Voltage: DC5V
2: Static current: less than 2mA
3: level output: 5V high
4: level output: the end of 0V
5: Induction Angle: not more than 15 degrees
6: Detection distance: 2cm-450cm
7: High precision: up to 0.3cm
Wiring, VCC, trig (control side), echo (receiving end), GND
This product uses the method: a control port more than send a 10US high, you can wait for the high output at the receiving port has an output on a timer can start counting, when this port goes low can read timing. the value of this time of the ranging time before calculating the distance. this constant cycle of measurement, you can reach the value of the mobile measurement
Works
(1) The IO trigger ranging to at least 10us high signal; and
(2) module automatically sends eight 40khz square wave and automatically detect whether a signal return;
(3) the signal returned by a high IO output, high duration is
Ultrasonic time from launch to return. Test distance = (high level time * sound velocity (340M / S)) / 2;
