Sensor - Sharp GP2 - Afstand sensor

Hardware

Informatie (ENG)

IR Sensors work by using a specific light sensor to detect a select light wavelength in the Infra-Red (IR) spectrum. By using an LED which produces light at the same wavelength as what the sensor is looking for, you can look at the intensity of the received light. When an object is close to the sensor, the light from the LED bounces off the object and into the light sensor. This results in a large jump in the intensity, which we already know can be detected using a threshold.

Since the sensor works by looking for reflected light, it is possible to have a sensor that can return the value of the reflected light. This type of sensor can then be used to measure how “bright” the object is. This is useful for tasks like line tracking.

Sharp sensor:	Interface:	Meetafstand:
GP2Y0A21YK0F	Analoog	10~80cm
GP2Y0A41SK0F	Analoog	4~30cm
GP2Y0D805Z0F	Analoog	0.5~5cm
GP2Y0D810Z0F	Analoog	2~10cm
GP2Y0A02YK	Analoog	20~150cm
GP2D120	Analoog	4~30cm

Pinout

Arduino

Sluit de module aan volgens onderstaand overzicht:

Script #1

// Sharp IR GP2Y0A41SK0F Distance Test
// http://tinkcore.com/sharp-ir-gp2y0a41-skf/

#define sensor A0 // Sharp IR GP2Y0A41SK0F (4-30cm, analog)

void setup() {
  Serial.begin(9600); // start the serial port
}

void loop() {
  
  // 5v
  float volts = analogRead(sensor)*0.0048828125;  // value from sensor * (5/1024)
  int distance = 13*pow(volts, -1); // worked out from datasheet graph
  delay(1000); // slow down serial port 
  
  if (distance <= 30){
    Serial.println(distance);   // print the distance
  }
}

// Sharp IR GP2Y0A41SK0F Distance Test

// http://tinkcore.com/sharp-ir-gp2y0a41-skf/

#define sensor A0 // Sharp IR GP2Y0A41SK0F (4-30cm, analog)

void setup() {

Serial.begin(9600); // start the serial port

}

void loop() {

// 5v

float volts = analogRead(sensor)*0.0048828125; // value from sensor * (5/1024)

int distance = 13*pow(volts, -1); // worked out from datasheet graph

delay(1000); // slow down serial port

if (distance <= 30){

Serial.println(distance); // print the distance

}

Bron: instructables.com

Script #2

/*
 *	created		2013-07-29
 *	by		lisper
 *	function	test gp2d120x
 *
 */

//connect gp2d120x to A1
#define pin A1

void setup () {
        Serial.begin (9600);
        pinMode (pin, INPUT);
}

void loop () {
        uint16_t value = analogRead (pin);
        double distance = get_gp2d120x (value);
        Serial.println (value);
        Serial.print (distance);
        Serial.println (" cm");
        Serial.println ();
        delay (500);
}

//return distance (cm)
double get_gp2d120x (uint16_t value) {
        if (value < 16)  value = 16;
        return 2076.0 / (value - 11.0);
}

* created 2013-07-29

* by lisper

* function test gp2d120x

//connect gp2d120x to A1

#define pin A1

void setup () {

Serial.begin (9600);

pinMode (pin, INPUT);

}

void loop () {

uint16_t value = analogRead (pin);

double distance = get_gp2d120x (value);

Serial.println (value);

Serial.print (distance);

Serial.println (" cm");

Serial.println ();

delay (500);

}

//return distance (cm)

double get_gp2d120x (uint16_t value) {

if (value < 16) value = 16;

return 2076.0 / (value - 11.0);

}

Bron: dfrobot.com

Afmetingen

Schema

GP2Y0D810Z0F
GP2Y0D805Z0F

GP2Y0A60SZLF

Teardown

GEEN GEGEVENS

Datasheet

GP2Y0A21YK0F datasheet

Fritzing

GP2Y0A21YK0F