The static weighing of AMN-107 vehicles in highways has several disadvantages, including being time consuming, expensive, and dangerous on heavily travelled roads.The concept of Weigh-In-Motion (WIM) was introduced more selleck chemical than fifty years ago [1]. WIM is the process by which the static weights of vehicles are determined by measuring wheel Inhibitors,Modulators,Libraries load while the vehicles are in motion. There are several advantages of weighing vehicles while they are in motion rather than at rest [2], which include savings in time and cost, and being safer to operate on busy roads.Traditional highway WIM systems tended to use weighing devices set in Inhibitors,Modulators,Libraries the road in one lane [3]. Many such systems Inhibitors,Modulators,Libraries are still in use, including some developed in recent years.
Wear and tear is severe, often resulting in a short lifespan.
Unless the approach pavement is particularly Inhibitors,Modulators,Libraries smooth, these systems Inhibitors,Modulators,Libraries are often inaccurate because the devices are subject to large load fluctuations depending on vehicle speed, vehicle suspension characteristics and road roughness [4]. Inhibitors,Modulators,Libraries Many new technologies such as Multi-sensor WIM [7], Fiber-optic WIM [8-10] and Capacitive sensor WIM [11] were developed for improving accuracy and longer lifespan. Unfortunately, although the current WIM technologies offer many advantages, they still suffer from high installation and maintenance costs and low accuracy. Bridge-WIM [5-6, 20-21] could supply vehicle weight data rapidly and at a low cost, but it is hard to obtain separate axle weights as the bridge is under stress from the moment the vehicle enters the span.
A novel sensor system is proposed for measuring wheel loads of vehicles on highways.
The proposed approach Inhibitors,Modulators,Libraries is based on the concept of monitoring strain response in the surface of rigid pavement affected by the moving vehicular loads. Multiple embedded Inhibitors,Modulators,Libraries concrete strain sensors are deployed in a freeway lane to directly measure the dynamic strain response of the pavement. The strain response is related to the instantaneous, dynamic wheel load on the pavement Carfilzomib by the passage of vehicles in the vicinity of the strain sensor. The measurements can be processed to filter out noise and extract important features of the dynamic load.
Batimastat The relation between pavement response and the dynamic load can be obtained through calibration using a known wheel load vehicle.
The article is organized by the following selleck chemical Cabozantinib parts: Section 1 �C Introduction; Section 2 �C Description of the measurement method; Section LCL161? 3 �C Experimental test bench; Section 4 �C Experimental results and analysis; Section 5 �C Conclusion.2.?Description of the methodologyCurrent WIM systems are mainly based on three types of sensors: bending plate, piezoelectric and single load cells. All three sensors must be located in the path of the vehicle. The sensors register the vertical dynamic tire forces provided by the passing vehicles.