Waterproof Ultrasonic Obstacle Sensor
This ultrasonic sensor is very similar to the ultrasonic sensors which are found in cars. This Waterproof Ultrasonic Obstacle Sensor shows some important constructional advantages over the conventional sensors. It comes in two separate parts one being the transducer which is the sensing element and the other being the control board.
- Operating voltage: DC 5V
- Quiescent current: 5mA
- Total current work: 30mA
- Acoustic emission frequency: 40khz
- Farthest distance: 4.5m
- Blind: 25cm
- Wiring: + 5V (positive power supply)
Trig (control side) RX
Echo (the receiver) TX
- Module size: 41mm * 28.5mm
- Distance measurement accuracy: ± 1cm
- Angle: less than 50 degrees
- Working temperature: -10 ~ 70 °
- Storage temperature: -20 ~ 80 °
- Product color: PCB board is blue
- Small size, easy to use.
- Low voltage, low power consumption.
- High measurement accuracy
- Strong anti-interference
- Integrated closed water with a line probe for wet, harsh measurement occasions.
- obstacle avoidance, automatic control.
- Objects close, it is perceived.
- Traffic control.
- security, industrial control.
- Artificial intelligence, teaching, and research.
The basic working principle:
- Turn on TRIG Pin to 5V for at least 10uS
- The module will then automatically send 8 40KHz tones and automatically detect when the signal return after reflecting back from the object
- Upon detecting the signal, a high-level signal is outputted through the IO Pin ECHO. By keeping track of the time duration between transmitting and receiving the signal, the distance can be calculated. Distance = (Time to Receive Reflected Signal * speed of sound (340M/S)) /2
This module uses the simple method, a control port with a 10US above high level, can wait for high-level output at the receiving port. An output can drive the timer, when this port is low can read the timer value, this time for the location of the time can be calculated distance. So constantly cycle test, that can achieve the measurement of the value of your mobile.
Datasheet: Waterproof Ultrasonic Obstacle Sensor