Belt conveyor material moisture content on-line detection method and device

Abstract

The invention relates to a belt conveyor material moisture content on-line detection method and device. The method includes: firstly, utilizing an image acquisition device for image acquisition of a material at the starting position of a belt conveyor weighing section according to a preset frequency; secondly, judging whether the sum of material advancing distance corresponding to the acquired material image meets the belt conveyor weighing section length requirement, if so, controlling a material weighing apparatus in terms of acquiring the actual weight of the material on the belt conveyor weighing section, and according to the pixel point information corresponding to the material surface in the acquired material image and a calibrated material dry base density, calculating the dry baseweight of the material on the weighing section; and according to the actual weight and the dry base weight, calculating the material moisture content. The method and device provided by the invention achieve calculation of the material dry base weight by acquiring the material image, and the actual mass of the material is directly measured by a contact-type weighing apparatus. Therefore, the detection result cannot be limited to moisture content detection at the material surface area and is not easily interfered by the external environment.

Description

technical field [0001] The invention relates to the technical field of on-line detection of materials, in particular to an on-line detection method and device for the moisture content of materials in belt conveyors. Background technique [0002] Belt conveyor, referred to as belt conveyor, as a material transportation device, has been widely used in various industries such as metallurgy, coal and chemical industry. For example, in sintering production, firstly, various materials with different components are sent to the mixer through a belt conveyor, then, according to the moisture content of each material, an appropriate amount of water is added to the mixer for mixing, and finally, The mixed materials are sent to the sintering machine for material sintering. Since the moisture content of the mixture during the sintering production process will directly affect the granulation effect of the sintering ore, the real-time collection and analysis of the moisture data in the mat...

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Problems solved by technology

[0004] However, the above-mentioned detection probe 02 is installed above the conveyor belt 01 to directly detect the moisture content of the material 03, and can only detect the moisture content of the material 03 in a small area close to the surface, and cannot detect the moisture content of materials of all thicknesses, and the detection results are accurate In addition, the above-mentioned detection methods are easily interfered by external light and steam, etc., have high requirements on the detection environment, and poor detection stability

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