Analog distance sensors

Analog distance sensors

Reflective sensors

Reflective sensors, also called reflection sensors, are photoelectric sensors in which the light beam sent by the sensor is reflected by a reflector placed at a certain distance (depending on the specific sensor). Interruption of this light beam by an object causes a change in the sensor's output signal. The reflector of such a sensor may be a passive element - a mirror or an active receiver. Often the transmitting element is an LED diode, while the receiver is a phototransistor. Noteworthy are miniature analogue distance sensors with analogue output from Pololu's QTR-L-1A series operating in the infrared band. The sensor consists of a transmitter and receiver measuring 7.6 x 8.9 x 3.1mm and weighing just 0.2g. Equipped with an analogue output, depending on the distance between the transmitter and receiver, as well as the colour of the obstacle placed between them, it generates an appropriate voltage value at its output. The sensor is ideal for vehicle and robotic systems where the ability to follow a path as a track is required.

Contactless sensors

Analogue output distance sensors, in which the sensor reacts by changing its input signal when approaching an obstacle, are proximity sensors. They will be a great solution for you when you want your robot or other vehicle to detect an object in its path and be able to determine its distance relative to it. Botland offers you Sharp analogue distance sensors GP2Y series, which work in ranges from 2 to 15 cm up to the range of 100 to 550 cm! If you need accurate measurements, choose the HSDL series sensor, which detects obstacles at a distance of 0 to 60 mm.