2 edition of Tests of a proposed on-board axle weighing system. found in the catalog.
Tests of a proposed on-board axle weighing system.
J. G.B Wood
1989 by Transport and Road Research Laboratory, Vehicles Group, Vehicles and Environment Division in Crowthorne, Berks .
Written in English
|Series||Research report / Transport and Road Research Laboratory -- 227, Research report (Transport and Road Research Laboratory) -- 227.|
Axle weighers help avoid overloading, increase fuel economy, reduce wear and improve safety. No, there is no sensor for a spring that I'm aware of. Repeatability test As any instrument, also weighing instruments may suffer from repeatability issues. For many uses such as at police over the road truck weigh stations or temporary road intercepts weighbridges have been largely supplanted by simple and thin electronic weigh cellsover which a vehicle is slowly driven.
Currently, such systems are used only for preselection of vehicles suspected of being overloaded, which are next directed to static scale weighing stations. The zero may be checked between each location to see that it has not changed. Strain gauges are used to measure the flexure in bending plates and the deformation in load cells. These signals are used as triggering inputs to start and stop the measurement to initiate totaling gross vehicle weight of each vehicle.
For WIM systems certain specific conditions apply. Contact us with your requirements. Below picture is a general illustration of unlinearity. Typically, the whole measurement range is calibrated and the calibration is performed in the location where the instrument is being used. For those interested in more detailed and scientific explanations, references to these detailed reports are included.
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Currently, such systems are used only for preselection of vehicles suspected of being overloaded, which are next directed to static scale weighing stations. Then the load is placed again, and so on. The weighing instrument should be at a horizontal level, especially for small and accurate weighing instruments.
This paper presents a detailed analysis of this phenomenon and describes the properties of polymer, quartz and bending plate load sensors. A Share article:.
While some industrial weighing instruments are very large ones that measure, for example, mass of trucks. Linearity In a weighing test, using multiple points through the measurement range of the instrument helps to reveal any issues with linearity.
Slight gradients and surface unevenness would reduce the accuracy by a further 50 kg per axle. Below picture is a general illustration of unlinearity. This should encourage efficient vehicle usage whilst reducing avoidable road wear. And then there are the numerous camera connectivity options as well.
Resources and Help A New Strategy for Dynamic Weighing in Motion of Railway Vehicles Abstract: Weighing-in-motion WIM systems automatically perform the dynamic weighing of railway vehicles while the trains are running on the lines through a reasonable number of measurement points placed along the track.
The studies were conducted in two ways: at roadside Weigh-in-Motion sites and at a laboratory using a climate chamber.
Strain transducers are used in Bridge WIM systems. Axle weighing helps ensure that vehicles are safely loaded to their rated capacity and to avoid the many problems associated with imbalance and overloading.
Figure 1 shows a diagram and a photo of a WIM system. A great deal of research has been carried out on the subject of traffic loading on bridges, both short-span,    including an allowance for dynamics,    and long-span.
Communications[ edit ] Variety of communication methods need to be installed on the measurement system. Finally, the test load is placed again to location 1 to check that Tests of a proposed on-board axle weighing system. book indication has not drifted from the earlier indication in location 1.
Four such weighing units were used with one under each of the trucks wheels. The pavement temperature influence on the weighing error was experimentally investigated as well as a non-uniform temperature distribution along and across the Weigh-in-Motion site.
A feasibility study of methods of on-board weighing concluded that the most promising method would be to measure the vertical shear strain in the axle between the suspension and the wheel. Click to expand– This code applies to all types of weighing devices other than automatic bulk-weighing systems, belt-conveyor scales, and automatic weighing systems.
The code comprises requirements that generally apply to all weighing devices, and specific requirements that are applicable only to certain types of weighing devices. Abstract: Weighing-in-motion (WIM) systems automatically perform the dynamic weighing of railway vehicles while the trains are running on the lines through a reasonable number of measurement points placed along the track.
Such intelligent systems may overcome disadvantages in terms of costs and traffic management, which are typical of conventional static weighing systems. Axtec's years of experience in axle weighing help you get the very most from your fleet, ensuring maximum return from every journey, without risking overloads.
From the world's most accurate dynamic weighbridges to the simplicity of on-board axle load indicators or the flexibility of portable weighpads.
Axtec has the answer.Cardinal Scale - Designed for non-legal-for-trade portable axle pdf applications such as pdf Cardinal's CWL and series mobile wheel weighers, the USA-made A weight indicator features axle weighing software, traffic control mode to automatically capture accumulative axle weights without the driver having to leave the truck (when connected to a remote display with traffic lights.May 21, · DOT scale I 10 W CA Banning weigh station,DOT,scale, scale house, I,Banning,DOT inspection, California, Weigh Station, Interstate Study on heavy vehicle on-board weighing Rapp Trans AG Among other ebook, Member States would ebook required to carry out a minimum number of vehicle checks, using either weighing systems built into the road or by means of on-board sensors in vehicles which communicate remotely with roadside inspectors.
These measurements would allow the.