Ads by Google
.
Ultrasonic sensor
1.TU-001 Ultrasonic sensor consists of a single transmit & receiving sensor, working with the application circuit, it can detect moving or static obstacle, and the distance value can be set, if the detected distance less than this setting value, it will output a digital signal to turn on the LED, otherwise it will output a digital signal to turn off the LED. This digital signal can control a relay, buzzer directly, or connected to a alarm system to active a alarm or action also.
2. Applications
Alarm system, proximity switch etc.
3. Parameters
ITEMS | PARAMETER | TOLERANCE | NOTE |
VOLTAGE | 1.Low voltage version DC 5-7V 2. Normal voltage version DC 8-16V |
|
|
FREQUENCY | 40KHZ | ±1KHz |
|
WORKING CURRENT | 20mA |
|
|
DETECTING RANGE | 0.2---1.0M | ±2cm |
|
SIGNAL OUTPUT
| 0 OR 1 |
| Digital/Switch Signal |
4. Function
A. Input Pin assignment:
Pin1: Vcc, Pin2: LE , Pin3: Gnd
B. To set the alert distance
After connecting Vcc and Gnd to power, Keeping the sensor aiming at the obstacle and to be a fixed distance, then connecting the LE wire to Vcc, the LED will flash three times , at last remove the blue wire from Vcc.
The system will remember this setting value to a EEPROM chip.
C. Detecting obstacle
If the system detects a distance less than this setting value, it will output a digital signal to turn on the LED, otherwise it will output a digital signal to turn off the LED.
This digital signal can control a relay, buzzer directly, or connected to a alarm system to active a alarm or action also.
special mini ultrasonic sensor, useful sensors