Infrared vision based detection and alarm method for longitudinal adhesive tape tearing
A technology of longitudinal tearing and tape, applied in the direction of conveyor control device, conveyor objects, transportation and packaging, etc., can solve the problems of tape damage, tape repair and replacement that consume a lot of manpower and financial resources, lack of real-time and accuracy, etc. Achieve the effect of avoiding tearing, reducing maintenance and replacement tape costs, and avoiding tear damage
Active Publication Date: 2014-07-09
TAIYUAN UNIV OF TECH
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Problems solved by technology
The defect of above-mentioned technology is lack of real-time and accuracy
At the same time, the common feature of all current technologies is that after the tape is torn, the detection device reacts
The key problem of these methods is: the early warning and processing actions of all detection devices are made after the accident, and the tape will always be damaged to a certain extent
Moreover, the maintenance and replacement of the adhesive tapes requires a lot of manpower and financial resources, and it will also cause the entire mine to stop production for several hours.
Therefore, the existing device can only reduce the loss caused by the accident, and cannot completely avoid the tearing damage of the adhesive tape
Method used
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[0031] Such as figure 1 As shown, the infrared camera (German OPTRIS thermal imaging camera PI160+) is vertically installed directly above the transport tape (target tape), and the transport material from the surface of the tape is exactly the focal length of the camera. Using optical means, by installing and adjusting the lens, it is determined that the focal length of the camera is 1 meter and the field of view is 90°. Assuming that the conveying speed of the tape is 2m / s, at the speed of one picture per second, it can be ensured that there is no missing part on the tape. The specific shooting frequency is reset by the corresponding tape transport speed.
[0032] In the first 5 to 10 minutes after the equipment is started, use the self-learning function to store the correct color information. At this stage, staff must be present to monitor to prevent impurities from passing through. When the correct color information is stored, it enters the monitoring mode for the substa...
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The invention relates to an infrared vision based detection and alarm method for longitudinal adhesive tape tearing and belongs to the technical field of automatic detection. The infrared vision based detection and alarm method for longitudinal adhesive tape tearing can be widely applied to belt-type conveyors used by industrial and mining enterprises in coal mines, power plants, wharfs and the like. The infrared vision based detection and alarm method for longitudinal adhesive tape tearing is realized by imaging target adhesive tape in real time via a CCD (charge coupled device), analyzing an image and alarming. The infrared vision based detection and alarm method has the advantages that deficiencies in an existing adhesive tape tearing detection method are overcome, actions can be taken when a danger source occurs on the adhesive tape and before the danger source damages the adhesive tape, tearing damage of the adhesive tape is completely avoided, cost on maintenance and replacement of the adhesive tape and economic loss caused by long-time production halt can be reduced to a great extent.
Description
technical field [0001] The invention relates to a detection and early warning method for preventing longitudinal tearing of transport belts, belonging to the technical field of automatic detection, and the method can be widely used on belt conveyors used by coal mines, power plants, docks and other factories and mines. Background technique [0002] Longitudinal tearing of the belt is one of the three catastrophic accidents of the belt conveyor (longitudinal tearing, transverse tearing, fire). The entire conveyor belt is scrapped, and production cannot be resumed for a long time, causing serious economic losses. The main reason for the longitudinal tear of the belt conveyor is that the coal is mixed with metal foreign objects such as angle steel, channel steel, steel fiber, and screws, which are stuck between the conveyor belt and the coal bunker, piercing the conveyor belt to form a longitudinal tear. [0003] At present, the existing longitudinal tear protection devices in...
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IPC IPC(8): B65G43/02
Inventor 乔铁柱王晓超靳宝全王峰王跃龙景毅
Owner TAIYUAN UNIV OF TECH
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