Sharp GP2D12 14

Sharp GP2D12

.With the introduction of the GP2D12 line of Sharp detectors, a new approach was developed that not only gives object detection at a longer range than the previous method, but also offers range information.This new rangers offer much better immunity to ambient lighting conditions because of the new method of ranging.

This sensor use triangulation and a small linear CCD array to compute the distance and/or presence of objects in the field of view.  The basic idea is this: a pulse of IR light is emitted by the emitter.  This light travels out in the field of view and either hits an object or just keeps on going.  In the case of no object, the light is never reflected and the reading shows no object.  If the light reflects off an object, it returns to the detector and creates a triangle between the point of reflection, the emitter, and the detector.

General Description

The Sharp GP2D12 is an analog distance sensor that uses infrared to detect an object between 10 cm

and 80 cm away. The GP2D12 provides a non-linear voltage output in relation to the distance an object

is from the sensor and interfaces easily using any analog to digital converter.

Features

• High immunity to ambient light and color of object

• No external control circuitry required

• Sensor includes convenient mounting holes

• Compatible with all BASIC Stamp® and SX microcontrollers.