SPEED MEASURING SENSOR 

The Speed Measuring Sensor is an electronic device designed to detect and measure the rotational or linear speed of moving objects. It converts physical motion into electrical signals that can be processed by microcontrollers, PLCs, or other control systems, making it ideal for robotics, motor control, vehicle monitoring, industrial automation, and tachometer applications.

Common sensor types include Hall Effect sensors for detecting magnets on rotating shafts, optical sensors that use light interruption, and magnetic or proximity sensors that sense metal targets.

The sensor works by detecting changes caused by a moving object (e.g., a magnet passing near a Hall sensor or an optical encoder being interrupted). It produces electrical pulses proportional to the motion, which are read by a microcontroller or counter circuit. The speed is calculated using the pulse frequency and the known distance per pulse.

Technical Specifications (Typical)

• Operating Voltage: 3.3 V – 5 V DC (module dependent)

• Output Type: Digital pulses (some modules may offer analog output)

• Detection Method: Hall effect, optical, or magnetic

• Detection Range: Millimeters to centimeters (rotational or linear speed)

• Response Time: Fast, suitable for real-time measurements

• Interface: Direct connection to microcontrollers such as Arduino, ESP32, ESP8266, Raspberry Pi

Applications

• Motor speed measurement and control

• Vehicle speed sensing

• Tachometers and RPM monitoring

• Industrial automation and conveyor systems

• Robotics and drone speed monitoring

• Educational and DIY electronics projects

This sensor is compact, reliable, and easy to integrate, providing precise speed measurements for a wide variety of projects and applications.