Vehicle weighing device based on geomagnetic sensor and vehicle detection method

Abstract

The invention discloses a vehicle weighing device based on a geomagnetic sensor and a vehicle detection method. The weighing device comprises a geomagnetic sensor arranged on the ground and a signal processing module. The geomagnetic sensor is arranged behind a weighbridge. The weighbridge is triggered to read data after the geomagnetic sensor senses that a vehicle passes through the weighbridge;the geomagnetic sensor uses the magnetic field detection principle of a three-axis magnetoresistive sensor to extract the magnetic field distribution characteristics of a container truck, and the signal processing module performs vehicle detection; and when it is detected that the vehicle completely passes, the weighbridge is triggered to upload data to the signal processing module, and the signalprocessing module displays the data. Accurate weighing of a container is achieved, the container truck out-of-gate weighing accuracy is improved, and therefore the out-of-gate efficiency is improved.

Description

technical field [0001] The invention relates to a vehicle weighing device and a vehicle detection method, in particular to a vehicle weighing device and a vehicle detection method based on a geomagnetic sensor. Background technique [0002] According to the requirements of customs supervision, when the container terminal picks up the container and leaves the gate, it needs to be weighed by the weighbridge to prevent smuggled goods from being carried in the container. Weighing on the floor scale requires the truck to stop completely on the floor scale to ensure the accuracy of the weighing, but the current weighing cannot determine whether the vehicle is completely parked on the floor scale, resulting in inaccurate weighing. When the weight of the suitcase does not meet the customs requirements, the truck It is necessary to return to the site for additional work, which will affect the efficiency of gate exit. [0003] At present, the automatic exit gate system mainly uses th...

AI Technical Summary

Problems solved by technology

Weighing on the floor scale requires the truck to stop completely on the floor scale to ensure the accuracy of the weighing, but the current weighing cannot determine whether the vehicle is completely parked on the floor scale, resulting in inaccurate weighing. When the weight of the suitcase does not meet the customs requirements, the truck It is necessary to return to the site for additional work, which will affect the efficiency of gate exit

[0003] At present, the automatic exit gate system mainly uses the camera to identify the container and trigger the weighbridge to read the data, but it cannot judge whether the parking position is accurate

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