Moving gantry type measuring system and method for vehicle-mounted material volume

Abstract

The invention relates to a moving gantry type measuring system and method for vehicle-mounted material volume. The moving gantry type measuring system for vehicle-mounted material volume comprises a visual calibration device used for calibrating the compartment length D of a trunk to be tested and the height h1 of a bottom plate of a compartment, an area scanning device located above the compartment and vertical to the compartment and used for scanning material in the compartment, and an upper computer which is connected to the visual calibration device and the area scanning device and used for obtaining the compartment width W and average clear height of material according to a scanning signal of the area scanning device and the height h1 of the bottom plate of the compartment and for calculating the total volume V of material together with the compartment length D. The moving gantry type measuring system and method for vehicle-mounted material volume have following beneficial effects: compared with a visual measuring method, the moving gantry type measuring system and method are immune to external factors; measurement stability and high measurement precision are obtained; cost is low; and compared with an artificial measurement method, a measurement process is automated without influence of human factors so that high precision is achieved.

Description

technical field [0001] The invention relates to a volume measurement system and method, in particular to a mobile gantry type vehicle-mounted material volume measurement system and method. Background technique [0002] For the wood-based panel industry, it is necessary to purchase a large amount of shavings, wood chips and other debris as processing raw materials for the production of wood-based panels. The purchase of raw materials is mostly transported by large trucks, and the actual weight of the raw materials is used as the basis for settlement based on the weight measured by the weighbridge minus the empty weight of the truck during the transaction. The problem with this transaction method is that the raw materials are often artificially doped with various sundries, such as metals, stones, etc., thereby increasing the load capacity and causing greater losses to the buyer. Therefore, in order to prevent the seller from adulterating and cheating on the raw materials, whe...

AI Technical Summary

Problems solved by technology

The problem with this transaction method is that the raw materials are often artificially doped with various sundries, such as metals, stones, etc., thereby increasing the load capacity and causing greater losses to the buyer.

[0003] For the volume measurement of vehicle-mounted materials in the above-mentioned application occasions, the general volume estimation measurement method cannot be used due to large errors. At present, more accurate measurement methods include: 1. Image-based volume measurement method, which uses stereo vision imaging. The obtained image is processed to obtain the distance information of the feature points on the surface of the material, and three-dimensional reconstruction is performed to calculate the volume of the material. This method has high measurement accuracy, but the disadvantage is that the cost is high. In addition, the weather changes lead to changes in light intensity. Man-made shadows will affect the acquisition and processing of images, resulting in larger errors in measurement results and unstable measurement systems; Second, the manual measurement method based on ranging sensors, which uses ranging sensors and uses manual measurement methods to measure Multiple feature points are measured in three-dimensional coordinates, and the volume value is calculated through three-dimensional modeling. This method has a low cost, but the measurement cycle is long, and the measurement accuracy has a lot to do with human operation factors; 3. Ultrasonic cross-sectional scanning method, this method Similar to the principle of using ultrasound to measure the volume of human organs in medicine, the measurement accuracy is high, but the cost is high, and the unevenness of the material and the difference in the medium will affect the reflection effect of the ultrasound, thereby affecting the measurement accuracy.

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