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Infrared Speed Sensor Module

../_images/07_speed_sensor_module.png

The Infrared Speed Sensor Module is an IR counter that has an IR transmitter and receiver. If any obstacle is placed between these sensors, a signal is sent to the microcontroller. The module can be used in association with a microcontroller for motor speed detection, pulse count, position limit, etc.

Pinout

  • VCC: This is the positive power supply(3.3V or 5V) input from the main control.

  • GND: Ground connection.

  • OUT: Digital output. When the speed sensor is obstructed, it outputs a high level; when unobstructed, it outputs a low level.

Principle

The speed sensor module is mainly used to detect changes in rotational speed or velocity. When an object passes by the H2010 sensor, it generates a pulse signal. The integrated LM393 comparator inside the module compares this pulse signal with a preset threshold, producing a stable high-level output signal.

The Infrared Speed Sensor Module has 1 H2010 photocell, which consists of a phototransistor and an infrared light emitter packaged in a 10 cm wide black plastic housing.

../_images/07_speed_sensor_module_2.png

When operating, the infrared light-emitting diode continuously emits infrared light (invisible light), and the photosensitive triode will conduct if it receives it.

../_images/07_speed_sensor_module_3.png

Schematic diagram

../_images/07_speed_sensor_module_schematic.png

Example