A video linkage monitoring device for preventing runaway vehicles from running away in mine hoists

Abstract

The utility model belongs to the technical field of safety monitoring of mine hoists, and specifically relates to a video linkage monitoring device for preventing runaway cars of mine hoists. It includes a camera arranged near the barrier of the anti-runaway car control system, the camera is electrically connected to the industrial switch, the industrial switch is electrically connected to the image processing computer, the image processing computer is electrically connected to the programmable controller; the roller on the hoist is provided with an encoder, the encoder is electrically connected to the programmable controller; the programmable controller is electrically connected to the hoist electric control system and the anti-runaway car control system respectively; the programmable controller and the touch screen are electrically connected to the industrial switch. The utility model can monitor the anti-runaway car control system and the running status of the mine car in real time, realizes visualization, synchronous linkage, cost minimization and intelligence, effectively avoids the expansion of faults, reduces production losses, improves equipment safety and reliability, can realize unmanned operation, and has strong compatibility, with good economic and social benefits.

Description

Technical Field

[0001] The utility model belongs to the technical field of safety monitoring of mine hoists, and in particular relates to a video linkage monitoring device for preventing runaway vehicles from running away from a mine hoist. Background Art

[0002] Inclined shaft hoist is an important part of the inclined shaft hoisting and transportation system of coal mines. However, due to improper operation and maintenance, wear and aging of wire ropes, sudden impact of system operation, improper human operation and other reasons, the inclined shaft hoisting and transportation system of coal mines is prone to runaway accidents caused by wire rope breakage and mine car uncoupling, which is a weak link in coal mine safety production. Coal mine runaway accidents are serious hazards. In addition to damaging facilities, they can also cause serious consequences such as casualties. Therefore, Article 387 of the "Coal Mine Safety Regulations" stipulates that when using a string car to hoist in an inclined shaft, it is necessary to "install a runaway protection device in the inclined shaft that can prevent vehicles with broken ropes or unhooking during operation", that is, an anti-runaway control system.

[0003] Under normal working conditions, the anti-runaway control system can effectively intercept runaway mine cars (or people-carrying vehicles, hereinafter referred to as mine cars) to avoid major casualties and property losses. However, there may also be problems of secondary accidents caused by failures of the anti-runaway control system itself. For example, when the elevator is operating normally, the car barrier in the anti-runaway control system is not raised in time, causing a passive accident in which the mine car collides with the car barrier. Or, when a runaway accident occurs in the elevator, the car barrier fails to fall into place as instructed to intercept the mine car. If the driver is unable to effectively know the status of the car barrier in the inclined shaft in real time and fails to take emergency measures, it will eventually cause serious personal accidents and major property losses.

[0004] In order to solve these problems, the current anti-runaway control system is generally equipped with a video monitoring system, that is, a camera is installed at the barrier, and a display is installed in the winch room of the hoist, so that the driver can view the status of the barrier through the video screen. Usually, there are many barriers, so there are many video screens. Multiple video screens are displayed on one screen, which is dazzling. The driver can easily make mistakes and fail to achieve the expected effect. The more serious problem is that it greatly distracts the driver's attention. The driver's attention should be on the control of the hoist. Due to the distraction of attention, it may cause the driver to operate incorrectly and cause an accident, which is not worth the loss. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a video linkage monitoring device for preventing runaway vehicles from running away in a mine hoist.

[0006] The purpose of the utility model is to be achieved by adopting the following technical solutions. According to the utility model, a video linkage monitoring device for preventing runaway vehicles from a mine hoist is provided, which includes a camera arranged near the barrier of the anti-runaway vehicle control system, the camera is electrically connected to an industrial switch, the industrial switch is electrically connected to an image processing computer, the image processing computer is electrically connected to a programmable controller; an encoder is arranged on the drum of the hoist, the encoder is electrically connected to the programmable controller; the programmable controller is electrically connected to the hoist electric control system and the anti-runaway vehicle control system respectively; the programmable controller and the touch screen are both electrically connected to the industrial switch.

[0007] Furthermore, the camera is an infrared night vision camera.

[0008] Furthermore, the camera is a camera on a video monitoring system configured for the anti-runaway car control system, and a hard disk recorder of the video monitoring system is connected to an industrial switch.

[0009] Furthermore, a data transmission component electrically connected to the camera is provided on the camera, and the data transmission component is electrically connected to the industrial switch.

[0010] Furthermore, an encoder is installed on the main shaft head of the non-driving end of the roller, and the encoder is an incremental photoelectric encoder.

[0011] Furthermore, the touch screen, image processing computer, programmable controller, and industrial switch are all arranged in a control box, and the control box, drum, and hoisting machine electrical control system operating console are arranged in a winch room.

[0012] Furthermore, a steel wire rope is led out from the drum into the inclined shaft, and a mine car is arranged at the end of the steel wire rope; a track is laid at the bottom of the inclined shaft, and the mine car runs on the track.

[0013] Furthermore, a car barrier is set at a certain interval in the inclined shaft, and the car barrier is installed on the track.

[0014] Compared with the prior art, the utility model is beneficial in that:

[0015] 1. The utility model can monitor the anti-runaway control system and the running status of the mine car in real time, realize visualization, synchronous linkage, cost minimization and intelligence, effectively avoid the expansion of faults, reduce production losses, and improve equipment safety and reliability.

[0016] 2. The utility model can realize unattended operation, realize intelligent mine production, save human resource costs, and has strong compatibility and good economic and social benefits.

[0017] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of an embodiment of a video linkage monitoring device for preventing runaway vehicles from running away for a mine hoist according to the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the interior of the control box.

[0020] [Reference Signs]

[0021] 1-car barrier, 2-camera, 3-data transmission component, 4-track, 5-mine car, 6-wire rope, 7-drum, 8-hoisting machine electronic control system operating table, 9-control box, 10-winch room, 11-encoder, 12-touch screen, 13-image processing computer, 14-programmable controller, 15-industrial switch. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model is an embodiment of a video linkage monitoring device for preventing runaway vehicles from a mine hoist, as shown in FIG. Figure 1 to Figure 2 The device is set in the inclined shaft and is improved by using the existing mine hoist and anti-runaway control system.

[0024] A winch room 10 (i.e., the hoisting machine electrical control room) is set at the top of the inclined shaft, and a drum 7, a hoisting machine electrical control system operating table 8, and a control box 9 are set in the winch room 10. A touch screen 12, an image processing computer 13, a programmable controller 14, and an industrial switch 15 are set in the control box 9.

[0025] The main shaft head of the non-driving end of the drum 7 is equipped with an encoder 11, which is an incremental photoelectric encoder for collecting and detecting the running speed of the mine car and the position in the shaft. The signal of the encoder 11 is connected to the programmable controller 14. The signal collected by the encoder 11 is sent to the programmable controller 14, and the calculated speed and calculated position of the mine car 5 in the shaft are obtained after calculation and processing by the programmable controller 14. The method by which the programmable controller 14 obtains the calculated speed and calculated position of the mine car 5 through the encoder 11 is a prior art and will not be repeated here.

[0026] The steel wire rope 6 is led out from the drum 7 into the inclined shaft. The drum 7 is used to reel in or release the steel wire rope 6. A mine car 5 is arranged at the end of the steel wire rope 6.

[0027] A track 4 is laid at the bottom of the inclined shaft, and the mine car 5 runs on the track 4 under the traction of the wire rope 6.

[0028] A car barrier 1 is set at a certain distance in the inclined shaft. As a part of the anti-runaway control system, the car barrier 1 is installed on the track to intercept the runaway mine car. The specific number of car barriers 1 shall be implemented in accordance with the requirements of the "Safety Regulations for Coal Mines" or the "Safety Regulations for Metal and Non-metal Mines".

[0029] A camera 2 is installed near each barrier 1. The camera 2 is an infrared night vision camera. In this embodiment, the camera 2 is installed obliquely above the barrier 1 to collect the status information of the barrier 1 and the status of the mine car when it reaches the camera monitoring area and the running speed of the mine car in real time to achieve visualization. The number of cameras 2 is set according to the number of barriers 1. In this embodiment, the cameras 2 are set one by one with the barriers 1.

[0030] The camera 2 is provided with a data transmission component 3, which is electrically connected to the camera 2 and the industrial switch 15, and is used to connect the video image captured by the camera 2 to the industrial switch 15. The device can also use the existing video surveillance system without the need to additionally set up the camera 2, and connect the video signal from the hard disk recorder of the existing video surveillance system to the industrial switch, thereby minimizing the cost as much as possible.

[0031] The video signal of camera 2 is connected from the hard disk recorder of the original video surveillance system by means of the original video surveillance system, and the video surveillance system already equipped with the anti-runaway control system is used, that is, the old anti-runaway control system is upgraded and reconstructed. If the anti-runaway control system is newly installed and the video surveillance system is not configured, only a new camera needs to be configured, that is, it is used for the newly installed anti-runaway control system, thereby improving the system compatibility.

[0032] The signal input end of the image processing computer 13 is electrically connected to the industrial switch 15. Since the video image signal of the camera 2 is connected to the industrial switch 15 through the data transmission component 3, the image processing computer 13 can collect the video signal of the camera 2 by connecting the image processing computer 13 to the industrial switch 15. The image processing computer 13 receives the video of the mine car 5 captured by the camera 2 through the industrial switch 15, and uses a computer vision algorithm to analyze the displacement of the mine car 5 between different frames to deduce the current speed of the mine car, thereby determining whether the speed of the mine car exceeds the set speed. The method of the image processing computer 13 using a computer vision algorithm to analyze and determine the displacement of an object between different frames to deduce the current speed of an object is a prior art and will not be repeated here.

[0033] The signal output end of the image processing computer 13 is connected to the programmable controller 14, which is used to transmit the mine car speed obtained by the computer vision algorithm analysis to the programmable controller 14. The signal output end of the programmable controller 14 is electrically connected to the hoist electric control system and the anti-runaway control system. After receiving the output signal of the mine car 5 overspeed sent by the image processing computer 13, the programmable controller 14 compares it with the speed signal collected by the encoder 11: if both are overspeeding, it is determined that the hoist is overspeeding, and the programmable controller 14 sends the hoist overspeed signal to the hoist electric control system operation console 8, and promptly controls the hoist electric control system to decelerate and then stop the mine car 5; if the image processing computer 13 sends the output signal of the mine car 5 overspeeding and the signal obtained by the encoder 11 is not overspeeding, it is determined that the mine car 5 is broken or unhooked, and the programmable controller 14 sends the mine car runaway signal to the hoist electric control system operation console 8, and promptly controls the hoist electric control system to decelerate and then stop the mine car 5. At the same time, it sends the runaway signal to the anti-runaway control system, notifying the anti-runaway control system to drop each car barrier 1 in front of the downward direction to stop the car, so as to realize the intelligent monitoring of the mine car speed. The method in which the programmable controller 14 compares two speed values ​​and issues instructions according to the speed values ​​is a prior art and will not be described in detail here.

[0034] After the anti-runaway control system is installed and before it is put into operation, the image processing computer 13 receives multiple pictures of the barrier 1 in various places taken by the camera 2 during the lifting, lowering and rising and lowering process through the industrial switch 15 as samples and stores them in the database; after the operation, the video signal of the barrier 1 of the camera 2 is collected, the collected video signal is preprocessed, the specific features of the barrier 1 here are extracted, and the extracted features are compared with the barrier 1 samples in the database using the machine learning algorithm to determine whether the state of the barrier 1 is normal; if the image processing computer 13 analyzes the video image and finds that the state of the barrier 1 is abnormal, it sends an alarm signal to the programmable controller 14. The method of the image processing computer 13 using the machine learning algorithm to compare the video taken in real time with the video stored in the database and compare and determine whether they are the same or close is a prior art and will not be repeated here.

[0035] After receiving the alarm signal of abnormal state of the barrier sent by the image processing computer 13, the programmable controller 14 sends a signal to the elevator electronic control system operating console 8, timely controls the operation of the elevator electronic control system (including the drum 7 and the mine car 5), and then stops the operation of the mine car, realizing intelligent monitoring of the barrier state.

[0036] The programmable controller 14 is electrically connected to the industrial switch 15; the touch screen 12 is electrically connected to the industrial switch 15, so that the touch screen 12 is connected to the programmable controller 14 through the industrial switch 15. The programmable controller 14 receives the signal of the encoder 11, calculates the position and speed of the mining car 5 in the shaft, and displays it on the touch screen 12.

[0037] The programmable controller 14 communicates with the touch screen 12, and the normal main screen of the touch screen 12 displays the calculated position and calculated speed of the mine car 5 in the shaft. The programmable controller 14 controls the display screen of the touch screen 12 according to the calculated position of the mine car 5 in the shaft. When the mine car 5 has not reached the position of the car barrier 1, the touch screen 12 displays the hoist operation parameter screen, such as the speed of the hoist (m / s), the position of the mine car in the shaft (m), etc.; when the mine car 5 is about to reach the corresponding car barrier 1 position, the touch screen 12 pops up to display the video screen shot by the camera 2 at the corresponding car barrier 1, and after the mine car 5 successfully leaves the car barrier 1 for a distance, the video screen of the camera 2 at the car barrier 1 is automatically turned off, and the touch screen 12 continues to display the hoist operation parameter screen, realizing the synchronous linkage of the position of the mine car 5-car barrier 1-video screen. The method of the programmable controller 14 controlling the touch screen 12 to display the screen is a prior art and will not be repeated here.

[0038] The working principle of the utility model of a mine hoist anti-runaway video linkage monitoring device is as follows:

[0039] The mine hoist anti-runaway runaway video linkage monitoring device and the anti-runaway runaway control system have been installed. The mine hoist anti-runaway runaway video linkage monitoring device must first obtain the basic information of the anti-runaway runaway control system and the mine hoist system, including video image samples of each car barrier 1 and the rated speed, winding diameter coefficient, communication parameters, etc. of the hoist; the method for obtaining the rated speed, winding diameter coefficient, communication parameters, etc. of the hoist is that the programmable controller 14 establishes communication with the hoist electronic control system operating console 8, and then reads from the hoist electronic control system. The reading method is a prior art and will not be repeated here.

[0040] After the signal of the encoder 11 installed on the main shaft head at the non-drive end of the drum 7 is connected to the programmable controller 14, when the hoist electronic control system controls the operation of the mine car, the programmable controller 14 calculates the running speed (calculated speed) and the position (calculated position) of the mine car 5 in the shaft. Since the mine car 5 is wound and moved by the hoist drum 7 under the drag of the wire rope 6 and the hook connection, when the wire rope 6 is not broken and the hook is not unhooked, the calculated speed and calculated position of the mine car 5 are the same as the actual speed and actual position of the mine car 5. However, when the wire rope 6 is broken or unhooked, that is, the mine car runs away, the calculated speed and calculated position of the mine car 5 are different from the actual speed and actual position of the mine car 5.

[0041] The programmable controller 14 communicates with the touch screen 12 in real time. The programmable controller 14 controls the display screen of the touch screen 12 according to the calculated position of the mine car 5 in the shaft. When the mine car 5 has not reached the position of the car barrier 1, the touch screen 12 displays the elevator operation parameter screen, such as the speed of the elevator (m / s), the position of the mine car in the shaft (m), etc.; when the mine car 5 is about to reach the corresponding car barrier 1 position, the touch screen 12 pops up and displays the video screen of the camera 2 at the corresponding car barrier 1, and after the mine car 5 successfully leaves the car barrier 1 for a distance, the video screen of the camera 2 at the car barrier 1 is automatically closed, and then the touch screen 12 continues to display the elevator operation parameter screen.

[0042] At the same time, the image processing computer 13 uses a machine learning algorithm to analyze and process the video of the camera 2 at the corresponding car barrier 1. When it is found that the state of the car barrier 1 is not right, it immediately sends a signal to the programmable controller 14. The programmable controller 14 outputs an alarm signal to the hoist electronic control system operating console 8, and then controls the mine car 5 to immediately slow down and stop running in the shaft; when the calculated position of the mine car 5 has not reached the car barrier 1 and the corresponding camera 2 has captured the mine car 5, it means that the mine car 5 has run away, and the image processing computer 13 sends a runaway signal to the programmable controller 14, and the programmable controller 14 sends a command to the anti-runaway control system to drop the front car barrier 1 to stop the car.

[0043] In addition, the image processing computer 13 can also analyze the displacement of the mine car 5 between different frames through a computer vision algorithm to deduce the current actual speed of the mine car 5, and transmit it to the programmable controller 14. The programmable controller 14 compares the actual speed with the calculated speed. When the actual speed exceeds the calculated speed (generally set to 10% of the rated speed of the hoist) or the actual speed exceeds 26.5% of the rated speed of the hoist, it is determined that a mine car runaway accident has occurred, and the programmable controller 14 notifies the anti-runaway control system to lower the front barrier 1 to stop the car. Based on the above technology, unattended operation can be achieved.

[0044] The system structure of the utility model can also be applied to anti-runaway control systems of various structural forms, and the structural form is the same as that in the above-mentioned embodiment.

[0045] The utility model can solve the following problems: first, visualization, the anti-runaway control system is equipped with a video monitoring system, or an independent video monitoring system is installed in the shaft, the camera 2 of the video monitoring system takes real-time pictures of the status of each barrier 1 and displays it on a display observable by the driver; second, synchronization and linkage, that is, the video monitoring system is synchronously linked with the position of the mine car 5, and the video screen of the corresponding barrier 1 is automatically popped up on the touch screen 12 within a certain distance before the mine car 5 reaches the barrier 1, and serves as the main screen of the touch screen to remind the driver to pay attention, thereby realizing the linkage between the video monitoring and the mine car 5; third, cost minimization, that is, the original video monitoring of the anti-runaway control system can be used The system does not need to repeatedly add cameras in the shaft, and only needs to connect the original video monitoring system to the industrial switch 15 of the device; fourth, it has strong compatibility, that is, the device can adapt to various forms of anti-runaway control system barriers and video monitoring systems; fifth, it is intelligent, that is, the background of the video monitoring system (image processing computer 13) has an image recognition function to identify whether the barrier 1 is correctly dropped or raised at each moment, and at the same time has the function of monitoring the speed of the mine car 5. When the barrier 1 is found to be in an abnormal state, it will automatically alarm to slow down and stop the hoist, or when it is found that the mine car is seriously speeding, the barrier 1 will be put down in time to block the runaway car to avoid accidents.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A video linkage monitoring device for preventing runaway vehicles from occurring in a mine hoist, characterized in that: It includes a camera arranged near the barrier of the anti-runaway control system, the camera is electrically connected to the industrial switch, the industrial switch is electrically connected to the image processing computer, the image processing computer is electrically connected to the programmable controller; an encoder is arranged on the roller of the elevator, the encoder is electrically connected to the programmable controller; the programmable controller is electrically connected to the elevator electronic control system and the anti-runaway control system respectively; the programmable controller and the touch screen are both electrically connected to the industrial switch.

2. A video linkage monitoring device for preventing runaway vehicles from running away when a mine hoist is described in claim 1, characterized in that: The camera is an infrared night vision camera.

3. The video linkage monitoring device for preventing runaway vehicles from running away when a mine hoist is described in claim 1, characterized in that: The camera is a camera on a video monitoring system configured for the anti-runaway car control system, and the hard disk recorder of the video monitoring system is connected to an industrial switch.

4. The video linkage monitoring device for preventing runaway vehicles from running away of a mine hoist according to claim 1 is characterized in that: The camera is provided with a data transmission component electrically connected to the camera, and the data transmission component is electrically connected to the industrial switch.

5. The video linkage monitoring device for preventing runaway vehicles from running away of a mine hoist according to claim 1 is characterized in that: An encoder is installed on the main shaft head of the non-driving end of the roller, and the encoder is an incremental photoelectric encoder.

6. The video linkage monitoring device for preventing runaway vehicles from running away of a mine hoist according to claim 1, characterized in that: The touch screen, image processing computer, programmable controller and industrial switch are all arranged in the control box, and the control box, drum and hoisting machine electric control system operating table are arranged in the winch room.

7. The video linkage monitoring device for preventing runaway vehicles from running away of a mine hoist according to claim 1 is characterized in that: A steel wire rope is led out from the drum into the inclined shaft, and a mine car is arranged at the end of the steel wire rope; a track is laid at the bottom of the inclined shaft, and the mine car runs on the track.

8. The video linkage monitoring device for preventing runaway vehicles from running away of a mine hoist according to claim 7 is characterized in that: A car barrier is set at a certain interval in the inclined shaft, and the car barrier is installed on the track.

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