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Project

Vehicle Detection by Means of Inductive Loop

Rating:

1

Author: Val Gretchev

Last Updated: 2016-02-17

Package Version: 1.0.0.0

Category: Measurement

Downloaded: 854 times

Followed by: 3 users

License: MIT license  

This project implements a loop oscillator circuit and a buried loop coil to detect large metal objects (such as a car). External components are kept to a minimum and oscillator frequency detection is done in software. This project uses a mikromedia plus for STM32 board with shield but any other fast MPU board should work.

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DOWNLOAD LINK RELATED COMPILER CONTAINS
mikroC PRO for ARM
  • lib
  • src
  • exa
  • hlp
  • hex
  • sch
  • pcb
  • doc

Project Blog

Vehicle detection by means of inductive loops in the pavement is not new. This technique has been used for many years and is still in use today.

Applications include sensing cars in left turn lanes to provide advanced green arrow signaling for left turns. Another application is counting cars on a highway for flow control or general road maintenance. Some lesser applications include garage door openers and parking lot security systems.

Schematic of Loop Oscillator

Schematic of Loop Oscillator

This circuit is required in making a working loop detector.

View full image

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