Low-cost modular devices for on-road vehicle detection and characterisation

TL;DR

This paper presents an economical, low-computation modular vehicle detection system using ultrasonic sensors, capable of accurately measuring vehicle speed and length through collaborative multi-angle modules.

Contribution

It introduces a modular, low-cost vehicle detection system that reduces computational requirements while maintaining accuracy through sensor collaboration.

Findings

Speed relative error reduced to 1-5 with multiple modules

Modules collaborate to improve measurement accuracy

System is economical and suitable for urban environments

Abstract

Detecting and characterising vehicles is one of the purposes of embedded systems used in intelligent environments. An analysis of a vehicle characteristics can reveal inappropriate or dangerous behaviour. This detection makes it possible to sanction or notify emergency services to take early and practical actions. Vehicle detection and characterisation systems employ complex sensors such as video cameras, especially in urban environments. These sensors provide high precision and performance, although the price and computational requirements are proportional to their accuracy. These sensors offer high accuracy, but the price and computational requirements are directly proportional to their performance. This article introduces a system based on modular devices that is economical and has a low computational cost. These devices use ultrasonic sensors to detect the speed and length of vehicles. The measurement accuracy is improved through the collaboration of the device modules. The experiments were performed using multiple modules oriented to different angles. This module is coupled with another specifically designed to detect distance using previous modules speed and length data. The collaboration between different modules reduces the speed relative error ranges from 1 to 5, depending on the angle configuration used in the modules.