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Device and method for detecting falling of coal conveying belt patrolling person

A detection device and belt technology, applied in the direction of conveyor control devices, transportation and packaging, conveyors, etc., can solve problems such as complex distribution of equipment, endangering personal safety of personnel, and hazards to the safe operation of equipment along the line

Inactive Publication Date: 2020-07-31
浙江浙能温州发电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complex distribution of equipment on the coal conveying site and the intersecting pipelines, inspection personnel are sometimes required to climb over the coal conveying belt, or even walk on the passage above the coal conveying belt
At the same time, there are often installation and maintenance operations at the coal conveying site. Occasional patrol inspections or workers accidentally falling on the running coal conveying belt. If the equipment cannot be effectively detected and the equipment is shut down in an emergency, it may affect the safe operation of the equipment along the line. Harm, even endanger the personal safety of personnel

Method used

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  • Device and method for detecting falling of coal conveying belt patrolling person
  • Device and method for detecting falling of coal conveying belt patrolling person
  • Device and method for detecting falling of coal conveying belt patrolling person

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The fall detection device for inspection personnel on the coal conveying belt includes a set of signal acquisition devices respectively located at the head and tail of the belt 1, and also includes a drop detection controller for belt inspection personnel for signal transmission with the signal acquisition device; among them, the signal acquisition device Including an inline laser 2 and a digital camera 3; the inline laser 2 is connected to the belt patrol personnel drop detection controller through a control signal line; the digital camera 3 is connected to the belt patrol personnel drop detection controller Connect via Ethernet cable.

Embodiment 2

[0028] On the basis of Embodiment 1, the fall detection controller of the belt inspection personnel includes a main controller and a video acquisition module respectively connected to the main controller, a laser start-stop control module, a liquid crystal touch module, a belt speed detection module and The power supply module; the inline laser 2 and the digital camera 3 are both connected to the main controller; the belt speed detection module is connected to an external coal conveyor belt speed detector. The digital camera 3 is sequentially connected to the main controller through the Ethernet interface circuit and the magnetic couple isolation circuit; the linear laser 2 is sequentially connected to the main controller through the laser interface circuit and the optocoupler isolation circuit; the liquid crystal touch module and the external coal delivery The belt speed detectors are all connected to the main controller through the serial interface. The liquid crystal touch ...

Embodiment 3

[0031] A machine vision and laser-based method for detecting the fall of inspection personnel on a coal conveyor belt, using the above-mentioned drop detection device for inspection personnel on a coal conveyor belt, the specific detection method is as follows:

[0032] 1) Install a set of signal acquisition devices at 1.5m-2.0m above the head and tail of belt 1;

[0033] Among them, the inline laser 2 is vertically installed above the belt 1, and its laser vertical line is vertically projected on the surface of the belt 1; the angle between the lens axis of the digital camera 3 and the laser vertical line of the inline laser 2 is at 45°- Between 75°, it is used to collect the image of the belt 1; the inline laser 2 is a 150mw green laser inline laser 21;

[0034] 2) At time T0, the digital camera 3 installed at the head of belt 1 transmits the collected image of belt 1 to the drop detection controller of the belt inspection personnel; at time T1, the coal material originally ...

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Abstract

The invention relates to a device and method for detecting falling of a coal conveying belt patrolling person. The device for detecting falling of the coal conveying belt patrolling person comprises signal acquisition devices located on the head and the tail of a belt correspondingly and further comprises a belt patrolling person falling detection controller, wherein the belt patrolling person falling detection controller and the signal acquisition devices are in signal transmission. Each signal acquisition device comprises a linear laser unit and a digital camera. The linear laser units are connected with the belt patrolling person falling detection controller through control signal lines. The digital cameras are connected with the belt patrolling person falling detection controller through Ethernet lines. When the person falls on the coal conveying belt, laser rays irradiate the surface of the human body, the morphological characteristics of laser bands are changed, when the person runs to the tail of the belt along with the belt, the belt patrolling person falling detection controller carries out contrastive analysis on the laser bands at a T0 moment and a T1 moment, when errorsexceed an alarming threshold value, a belt conveyor stop instruction is sent, and an image of the T1 moment is displayed on a liquid crystal display.

Description

technical field [0001] The invention relates to a fall detection device and method for inspection personnel on a coal conveyor belt. Background technique [0002] In the coal handling system of thermal power plants, front-line inspectors need to conduct daily inspections in accordance with the equipment maintenance process. However, due to the complex distribution of coal conveying site equipment and intersecting pipelines, inspection personnel are sometimes required to climb over the coal conveying belt, or even walk on the passage above the coal conveying belt. At the same time, there are often installation and maintenance operations at the coal conveying site. Occasional patrol inspections or workers accidentally falling on the running coal conveying belt. If the equipment cannot be effectively detected and the equipment is shut down in an emergency, it may affect the safe operation of the equipment along the line. harm, or even endanger the personal safety of personnel....

Claims

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Application Information

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IPC IPC(8): B65G43/00B65G43/06B65G15/32
CPCB65G15/32B65G43/00B65G43/06B65G2203/0266B65G2203/0291
Inventor 刘为民杨勇王杰杨明花金崇伟陈立新陈国权夏兴丁
Owner 浙江浙能温州发电有限公司
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