Grove Infrared Reflective Sensor v1.2

Reference: SEEED 101020174

5 Items

PRODUCT DETAILS

Description

Grove - Infrared Reflective Sensor v1.2 can be used for the detection of proximity and color of objects. The reflective photosensor - RPR-220 used in this module consists of an infrared light emitting diode and a high –sensitivity phototransistor. Light-colored objects directly in front of the sensor will reflect more infrared light as well as generate more current in the phototransistor than an object with dark-colored surfaces, this can tell from a built-in indicator LED which will turn red with sufficient flow of current. Also, the intensity of the reflective light increases as the object getting closer. You can adjust the potential-meter on the back of the board if you want to detect a specific object (eg. Blackline) at a certain distance.

Application

This sensor is widely used in applications such as:

Line-following robots
Rotary speed detection
Auto-data logging on utility meters or other situations where color or distance contrast is sharp.

Feature

Panel-mounting Grove interface
Digital output: 0 or VCC
Built-in indicator LED
Threshold adjustable via potentiometer
Power supply: 3.5 – 5.5V DC
Reflective Photosensor: RPR-220
Effective working distance: 4-15mm
Minimum detectable width for monochrome lines: 10mm
Connector: 4 pin Buckled Grove interface
Dimension: 20mm*20mm

What is the difference between the IR distance sensor and the ultrasonic distance sensor?

IR distance sensor	Ultrasonic Sensor
What it does	Measure distance through reflected light waves	Measure distance through reflected sound waves
How it measures	Triangulation: Angle of a reflected IR beam is measured	Time taken between transmitting and receiving sound waves are recorded
Human Relationship	Invisible to the naked eye	Unhearable
Object Requirements	Suitable to be used to measure complex objects	Not suitable to measure objects with complex surfaces