Research Of The Traffic Monitoring System Based On The Pressure-sensitivity Of CFRM

This work is a part of the project Study of Electrical Property and TestingMethods of Smart Concrete for Traffic Monitoring System, supported by the NationalNatural Science Foundation. Our workgroup presents the work principle and schemedesign of a traffic monitoring system which including monitoring vehicle speed andvehicle weight. A serial of experiments about material, sample and signal collectionand procession have done. A simple frame of the traffic monitoring system has beenbuilt up. It makes a solid foundation for carbon fiber reinforced material applying intraffic monitoring system.Based on the foundation, this paper makes the traffic monitoring system moreperfect. First of all, a better smart material was worked out. We use CFRM withproper nano-carbon black to replace CFRC. The pressure sensitivity of the materialincreases, and the mechanics property is assured. Then, comprehensive investigatesand information gathering have done. The design is modified, and it is more effectiveand practical. Third, real-time signal collection is completed. It makes the trafficmonitoring system automatic. At last, the programs of vehicle speed monitoring,vehicle weight monitoring and traffic flow statistic are finished. The main parts arespeed calculating, weight calculating, traffic flow calculating and vehicle judging.CFRM can be used not only as structural material to prolong the road life, butalso as functional material, for its sensitivity property, to monitor speed, weight andtraffic flux. The system is low cost but multifunctional greatly. Beside this, thisresearch also has great academically valuable.