Axle load measuring device, axle load instrumentation system, and monitoring method of measurement precision
A measuring device and weight measurement technology, which is applied in the directions of measuring devices, weighing, instruments, etc., can solve the problems such as the decrease of the measurement accuracy of the axle load measuring device, and achieve the effect of saving cost and time.
Active Publication Date: 2010-06-16
ORMON CORP
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- Application Information
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Problems solved by technology
That is, as time goes by, the measurement accuracy of the axle load measuring device gradually decreases
Method used
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Embodiment Construction
[0043] Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. Figure 1 shows the composition of the axle load measuring device. This axle load measuring device 1 is composed of the following: a loop coil 5 for detecting that the vehicle 3 has entered the measurement field R; a loop coil 6 for detecting that the vehicle 3 has exited from the measurement field R; 3 axle load gauges 7 a to 7 c in the measurement range R between 6 ; and the calculation control unit 2 installed on the roadside. In addition, the number of axle load gauges 7 is not limited to three, and it is preferable to install three or more. In this embodiment, the case where the number of axle load gauges 7 is three is demonstrated. When the vehicle 3 passes through the loop coils 5 and 6 embedded in the travel road 4, the inductance of the loop coils 5 and 6 changes, and the vehicle detection unit 21 of the calculation control unit 2 detects the movement of ...
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To determine to give notice that the measurement accuracy of an axle load measuring instrument is beyond permissible limits or lowered without running a test vehicle whose axle load is known. This axle load measuring instrument 1 measures the number of axles of a running vehicle 3, its wheel base, its axle load on each axle, and its total weight. The number of axles of a specific vehicle, the upper and lower limit values of its wheel base, and the lower limit value of front axle load, are previously stored in a storage part 23. These data are compared with measurement values such as the wheelbase of the running vehicle 3 to determine whether the running vehicle 3 falls under the specific vehicle. If the running vehicle 3 falls under the specific vehicle, the moving average value of total-weight measurement values is compared with the total-weight upper and lower limit values of the specific vehicle stored in the storage part 23. If the average value does not fall within a range defined by the upper and lower limit values, an arithmetic and control part 20 transmits, from a communication part 25 to a higher-rank device 8, a message to the effect that the weight measurement values of the specific vehicle stands outside an allowable range.
Description
technical field [0001] The present invention relates to a countermeasure against the decrease in measurement accuracy of an axle load measuring device for measuring the vertical force applied to a road surface by an axle of a vehicle, that is, the axle load. Background technique [0002] In order to obtain information on road maintenance and traffic restrictions, measurement data such as the total weight of large vehicles measured by an axle load measuring device is collected by a host device, and statistical processing is performed on the collected data. The axle load measuring device measures the vertical force (axle load) applied to the road surface by the axles of the traveling vehicle from the axle load gauge buried on the road, and adds the axle loads of each axle to obtain the total weight. In addition, there are load plate type and rod type axle load gauges. The load plate type axle load gauge detects the entire axle load of the driving vehicle with a load plate wide...
Claims
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IPC IPC(8): G01G19/03
Inventor 上田忠一渡边五大
Owner ORMON CORP