Experimental Study Of Carbon Fiber Composites For The Detection Of Traffic Violation In Crossing The Line

With economic development and national power continued strong, accelerating China's modernization process, transport networks become complicated increasingly, ever-increasing traffic flow to the transport network will bring more heavy pressure to transport system. The traffic situation worsening, which is almost a common problem for all cities, national government departments pay more attention to the dilemma from traffic violations. Improving the technology of traditional cement-based and resin-based functional materials, the development of an effective monitoring of traffic load in the new multi-function composite sensor parts, to expand its applications and promote its integration into the structural and functional material, it has a wide range of engineering significance to raise the intelligent level of traffic monitoring. In this paper, research and innovations include the following:1. We research the intrinsic sensors of cement-based composite material, which is made of carbon fiber, carbon black, graphite composite conductive phase, and analyze the static and dynamic sensing characteristics under traffic loads. The results show that it has better sensor stability, but low sensitivity coefficient.2. We research the intrinsic sensors of resin-based composite with continuous carbon fiber ribbon processed with the relevant method, and analyze the static (time-linearity, dispersion, the average hysteresis and repeatability, sensitivity) and dynamic sensing data, characteristics under traffic loads. The results show that:under the standard conditions, the ribbon resin-based sensors can be real, effective and reliable in monitoring the signal of pulsating load, and can qualitatively determine the size of the load; The shorter the time interval of continuous pulse load, the better the characteristics of the sensor are, such as the linearity, reliability and stability.3. With the simulation experiments of monitoring the crossing line of traffic violations with the ribbon resin-based sensors, the traffic load of the laboratory simulation shows that the dynamic response can be accurately tested by the sensor, and it can also monitor traffic flow (including pedestrian and vehicular traffic) qualitatively. Also, we can analyze the load characteristics through the sensor voltage response curves.4. Finding a reasonable load loading forms, we use ANSYS finite element analysis software to simulate the voltage distribution of the ribbon resin-based sensors' response and analyse the size of strain and stress under the moving load. Comparing theoretical and experimental results, we can verify the accuracy of the calculation parameters, and it provides a basis for further experimental and theoretical research.