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Vol. 126, Issue 3, March 2011, pp.74-84

 

Bullet

 

Development of a Simple Traffic Sensor and System with Vehicle Classification Based on PVDF Film Element

 
D. R. SANTOSO, ABDURROUF, L. NURRIYAH

Dept. of Physics, Brawijaya University, Jl. Veteran Malang, 65145, Indonesia

Tel.: +62-341-575833, fax: +62-341-575834

E-mail: dieks@ub.ac.id

 

 

Received: 20 December 2010   /Accepted: 17 March 2011   /Published: 29 March 2011

 

Abstract: In this paper, piezoelectric sensor system for measuring traffic flow with vehicle classification is proposed and investigated. Sensing element is made of PVDF film, which on both sides plastered with sheets of metal electrodes for making electrical connections. This sensor will generate electric voltage when subjected to mechanical pressure by the wheels of the vehicle. The signal conditioning is required to make sensor output voltage in the range of 0-5 Volts. To classify the types of vehicles crossing the sensor, three-level comparator is used, with specifications of a low voltage reference for motorcycles, medium voltage reference for a family vehicle, and a high voltage reference for buses, trucks and the like. Output of the comparators are already a logic '0' or '1' is then processed by a microcontroller based data acquisition system that the output shows the number and type of vehicles that crossed the road in the form of digital code. These data then transmitted to a control centre that was built based on a PC. At the control centre, traffic data tabulated in the form of measurement database and stored for further analysis.

 

Keywords: PVDF film, Traffic sensor, Vehicle identification

 

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