Qti Sensor
Qti Sensor
Qti Sensor

Qti Sensor

Parallax Inc. | A-000000-00220
Compact emitter/receiver infrared sensor for mobile robots to navigate and follow lines on the ground. DISCONTINUED ARTICLE.
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The Qti infrared sensor

This compact QTI infrared sensor is ideal for mobile robots that have to follow a line on the ground, to solve a maze, to distinguish the edge of a sumo ring or to navigate around obstacles. The QTI sensor consists of an infrared emitter and an infrared receiver. It can distinguish the dark areas with low reflectivity such as a black line on the ground and the white areas with high reflectivity.

The infrared Qti sensor can be connected in two ways:

  • Digital connection: for fast binary black/white line following
  • Analog connection : able to measure different shades of gray

What does QTI stand for?

  • Q: Charge
  • T: Transfer
  • I: Infrared

When your microcontroller measures the time it takes for the QTI's capacitor to decay, it's measuring a rate of charge transfer through an infrared phototransistor. This rate indicates how much infrared is reflecting off a nearby surface.

Technical specifications of the Qti infrared sensor

Functional and technical specifications of the QTI infrared sensor are as follows:

  • Digital or analog outputs
  • No-contact surface sensing
  • Unfocused for sensing diffused surfaces
  • Daylight filter on sensor
  • Easy to interface with any Parallax microcontroller
  • Power: 5V
  • Dimensions : 31.7 x 9.4 mm
  • Operating temp range: de -40°C à +85°C
The Qti Infrared sensor is ROHS compliant
The Qti Infrared sensor is ROHS compliant
Documentation technique du capteur infrarouge Qti
Technical documentation of the Qti infrared sensor
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