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ELECTRONICS

Vehicle Speed Checker for Highways Using 8051 and IR Sensors

A worked electronics example, rendered live. Open it in the AI editor and adapt it to your own case.

UPDATED 2026-09-11
TYPECircuit
USE-CASEHighway Speed Checker
EXAMPLEVehicle Speed Checker for Highways Using 8051 and IR Sensors
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CASE ANALYSIS

Scenario

A highway monitoring station needs to detect vehicle speed between two infrared sensor pairs and display it on an LCD.

Key decisions

  • Use IR sensor pairs 1 and 2 to capture entry and exit time
  • Use AT89S52 to compute speed from the sensor time difference
  • Use I2C LCD for clean readout and 7805 regulator for stable 5V

When to reuse this

Reuse when designing a microcontroller-based highway speed checker or similar time-of-flight sensor projects.

← See more highway speed checker examples
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