Detection system for deviation of main conveying belt of coal mine

Abstract

The utility model provides a coal mine main conveying belt deviation detection system which comprises image acquisition devices, processing devices and a controller, the image acquisition devices are installed above a main conveying belt area of a coal mine main conveying belt, and the number of the image acquisition devices is multiple; the processing device is connected with the plurality of image acquisition devices, receives video data acquired by the image acquisition devices, and outputs a main conveying belt deviation alarm signal; the controller is connected with the processing equipment, and the controller receives an alarm signal output by the processing equipment; the controller is connected with a belt frequency converter of a coal mine main conveying belt. According to the utility model, the processing equipment is used for processing data acquired by the image acquisition equipment to judge whether the main conveying belt deviates, and if the main conveying belt deviates, the controller is used for controlling the belt frequency converter to regulate the speed or stop, so as to detect the deviation of the main conveying belt of the coal mine.

Description

Technical Field

[0001] The utility model relates to the field of personnel detection, in particular to a detection system for deviation of a main transport belt of a coal mine. Background Art

[0002] The main conveyor belt of a coal mine is one of the most important equipment in coal mine production. It is responsible for transporting coal from the mining face to the ground or other processing sites. The working principle of the main conveyor belt of a coal mine is to drive the roller to rotate through the driving device, so that the belt can produce continuous movement to realize the transportation of coal. During the transportation process, the tensioning device can maintain the appropriate tension of the belt to ensure the stable transportation of the belt.

[0003] Since the normal operation of the main transport belt of a coal mine is of great significance to ensuring the smooth production of coal mines, in a mining environment, the main belt used to transport coal is called the main transport belt of a coal mine. The main transport belt of a coal mine is long and runs fast to meet the needs of moving large amounts of coal.

[0004] In order to eliminate hidden dangers, a variety of safety measures need to be taken around the main transport belt of a coal mine, including: (1) setting up safety fences or guardrails to isolate the working area of ​​the main transport belt of a coal mine from the personnel activity area; (2) installing safety warning signs around the working area of ​​the main transport belt of a coal mine to remind personnel to pay attention to the area above the main transport belt; (3) using cameras and monitoring systems to monitor the belt working area in real time.

[0005] Although the above-mentioned measures can jointly ensure the safety of the main transport belt transportation in coal mines, it is very easy for the belt to deviate during use, and the detection measures need to be further improved. Utility Model Content

[0006] The purpose of the utility model is to provide a detection system for the deviation of the main transport belt of a coal mine. The data collected by the image acquisition device is processed by the processing equipment to determine whether the main transport belt is deviated. If the main transport belt is deviated, the belt frequency converter is controlled by the controller to adjust the speed or stop the belt to detect the deviation of the main transport belt of the coal mine.

[0007] The technical solution to achieve the purpose of this utility model is as follows:

[0008] The utility model provides a detection system for deviation of the main transport belt of a coal mine, comprising:

[0009] An image acquisition device, wherein there are multiple image acquisition devices, and the multiple image acquisition devices are installed above the main transport belt area of ​​the main transport belt of the coal mine;

[0010] A processing device, each of which is connected to a plurality of the image acquisition devices, receives video data transmitted by the image acquisition devices, processes the video data and outputs an alarm signal of deviation of the main transport belt;

[0011] A controller is connected to the processing device, and receives an alarm signal output by the processing device; the controller is connected to a belt frequency converter of a main transport belt of a coal mine.

[0012] As a further limitation of the present invention, a plurality of the image acquisition devices are located above the main transport belt area of ​​the main transport belt of the coal mine and are sequentially distributed along the main transport belt of the coal mine, so that a plurality of the image acquisition devices are installed at different positions above the main transport belt area of ​​the main transport belt of the coal mine;

[0013] The plurality of image acquisition devices output the acquired video data to the processing device.

[0014] As a further limitation of the present utility model, the image acquisition device is installed directly above the main transport belt of the coal mine, and the image acquisition device captures the rollers on both sides of the main transport belt of the coal mine and outputs them to the processing device as video data;

[0015] The processing device receives the video data and determines whether the main conveyor belt is deviating.

[0016] As a further limitation of the present utility model, the image acquisition device is an AI camera;

[0017] The AI ​​camera is installed on the roof of the coal mine through a hanger. The camera head of the AI ​​camera is installed tilted downward. The AI ​​camera is located above the main transport belt of the coal mine.

[0018] As a further limitation of the present utility model, it also includes a fill light;

[0019] The fill-in light is located above the belt roller of the main transport belt of the coal mine, and the fill-in light is suspended on the roof of the coal mine through a hanger.

[0020] As a further limitation of the present utility model, an angle less than 180° is formed between the AI ​​camera and the hanger, and the AI ​​camera avoids the belt rollers of the main transport belt of the coal mine and is located above the main transport belt of the coal mine.

[0021] As a further limitation of the present invention, it also includes:

[0022] The sound and light warning device is connected to the processing device, and the sound and light warning device receives the alarm signal of the processing device and alarms according to the alarm signal.

[0023] As a further limitation of the present invention, it also includes:

[0024] Relay, the relay coil of the relay is connected to the controller, and the controller controls the relay coil to turn on the auxiliary normally open contact of the relay; the relay coil is connected to the sound and light warning device, triggering the sound and light warning device to make a sound and light alarm.

[0025] As a further limitation of the present invention, it also includes:

[0026] A storage module is connected to the image acquisition device and the processing device, and the storage module stores the video data acquired by the image acquisition device and the data processed by the processing device.

[0027] Compared with the prior art, the beneficial effects of the utility model are:

[0028] The utility model processes the data collected by the image acquisition device through the processing device to judge whether the main transport belt is deviated. If the main transport belt is deviated, the belt frequency converter is controlled by the controller to adjust the speed or stop, thereby improving the deviation detection of the main transport belt in the coal mine. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The utility model provides a detection system principle framework for the deviation of the main transport belt of a coal mine Figure 1 ;

[0030] Figure 2 The utility model provides a detection system principle framework for the deviation of the main transport belt of a coal mine Figure 2 ;

[0031] Figure 3 The utility model provides a schematic diagram of a detection system for deviation of a main transport belt in a coal mine. DETAILED DESCRIPTION

[0032] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0033] See also Figure 1The embodiment of the utility model discloses a detection system for deviation of the main transport belt of a coal mine, including: an image acquisition device, a processing device and a controller. There are multiple image acquisition devices, and the multiple image acquisition devices are installed above the main transport belt area of ​​the main transport belt of the coal mine. The processing device is connected to the multiple image acquisition devices, the processing device receives the video data acquired by the image acquisition device, the processing device outputs an alarm signal of deviation of the main transport belt, the controller is connected to the processing device, the controller receives the alarm signal output by the processing device; the controller is connected to the belt inverter of the main transport belt of the coal mine.

[0034] In practical applications, the processing device of the embodiment of the utility model processes the video data after accessing the video data of the image acquisition device, detects whether the main transport belt is deviated, and sends the result of whether it is deviated to the controller and the sound and light warning device through the modbus-tcp protocol.

[0035] See also Figure 2 , after receiving the alarm signal of the processing device, the controller of the embodiment of the utility model performs the following two operations according to the pre-settings: 1. Output a 24v control signal to control the relay coil of the relay to turn on the auxiliary normally open contact, control the 127v power supply to be turned on, and trigger the sound and light warning device to sound and light alarm. 2. Send the deceleration instruction to the belt inverter through the modbus-tcp protocol. After receiving the signal from the controller, the belt inverter performs frequency conversion speed regulation or shutdown. The relay of the embodiment of the utility model is an electrical control device, which is an electrical appliance that causes a predetermined step change in the controlled quantity in the electrical output circuit when the change in the input quantity (excitation quantity) reaches the specified requirements. The embodiment of the utility model controls the 127v voltage output by controlling the 24v voltage input. The relay of the embodiment of the utility model can control the on and off of the circuit through electromagnetic attraction or electrothermal effect to realize the start and stop of the sound and light warning device. The relay includes a relay coil and a relay contact, and the relay contact is preferably an auxiliary normally open contact. The controller outputs a 24v alarm signal, controls the relay coil to turn on the auxiliary normally open contact, controls the AC 127v power supply to be turned on, and triggers the sound and light warning device to sound and light alarm. In addition, the processing device is connected to the upper monitoring and storage module, and the upper monitoring and storage module performs upper computer warning and data storage.

[0036] The embodiment of the utility model discloses a detection system for deviation of the main transport belt of a coal mine. In actual use, it is preferred that multiple image acquisition devices are distributed above the main transport belt of the coal mine; the multiple image acquisition devices are installed at different positions above the main transport belt of the coal mine; the image acquisition devices send the acquired video data to a processing device.

[0037] Multiple image acquisition devices of the embodiment of the utility model are installed along the transportation path of the main transportation belt of the coal mine. In actual application, the processing equipment of the embodiment of the utility model can select the edge computing terminal of the model Edge AI 300 manufactured by Xi'an Xingzhou Zhiyi Intelligent Technology Co., Ltd. The edge computing terminal of the embodiment of the utility model adopts the YOLO series target detection algorithm YOLOV5 as the main deep learning model for video data processing. The above-mentioned YOLO series target detection algorithm extracts target features through a convolutional neural network, and finally outputs an N*N*(ClassNum+5) feature matrix after a series of convolutional layers and pooling layers, where N is the number of grids divided by the final output feature map. The confidence and coordinate frame (x, y, w, h) position of each category are calculated by the 5-dimensional vector of the feature matrix. The controller of the embodiment of the utility model can adopt a plc programmable controller, and the plc programmable controller preferably adopts a plc programmable controller of model DVP12SE11R produced by Shenzhen Xinzhiyun Information Technology Co., Ltd.

[0038] Furthermore, the image acquisition device of the embodiment of the utility model is preferably an AI camera; the AI ​​camera is installed on the roof of the coal mine through a hanger, the camera head of the AI ​​camera is installed tilted downward, and the AI ​​camera is located above the main transport belt of the coal mine; the AI ​​camera collects video data of the main transport belt in real time. The AI ​​camera of the embodiment of the utility model is preferably a mining intrinsically safe camera KBA12 (D), which mainly includes an image acquisition module, a communication transmission module, and a voice processing module, and the image acquisition module is connected to the communication transmission module and the voice processing module respectively.

[0039] The processing device of the embodiment of the utility model determines whether the main transport belt is deviated; the processing device outputs an alarm signal of the main transport belt being deviated.

[0040] Please continue reading Figure 1 and Figure 2 The utility model discloses a detection system for deviation of the main transport belt of a coal mine, which includes, in addition to an image acquisition device, a processing device and a controller, an acoustic and light warning device. The acoustic and light warning device is connected to the processing device, receives an alarm signal from the processing device, and alarms according to the alarm signal.

[0041] See also Figure 3 The utility model discloses a detection system for deviation of the main transport belt of a coal mine, which includes, in addition to an image acquisition device, a processing device and a controller, a fill light, which is located above the belt roller of the main transport belt of the coal mine and is suspended on the roof of the coal mine through a hanger. Figure 3 , Figure 3An angle less than 180° is formed between the AI ​​camera and the hanger. The AI ​​camera avoids the belt rollers of the main transport belt of the coal mine and is located above the main transport belt of the coal mine.

[0042] Please continue reading Figure 1 and Figure 2 The utility model discloses a coal mine main transport belt deviation detection system, which includes, in addition to an image acquisition device, a processing device, a controller and an audio-visual warning device, also a storage module. The storage module is connected to the image acquisition device and the processing device, and the storage module stores video data acquired by the image acquisition device and data processed by the processing device.

[0043] For example, the processing device of the embodiment of the utility model and the sound and light warning device exchange data through the modbus-tcp protocol. The IP address of the warning device is 192.168.12.123, the port is 502, and the communication protocol uses the Modbus-tcp edge server to write the data of the PLCM105 point (regional intrusion alarm point) in real time. The processing device obtains the real-time video data of the image acquisition device through the RTSP protocol (real-time streaming protocol), and then performs data processing. The controller and the belt inverter exchange data through the modbus-tcp protocol. The IP address of the belt inverter is 192.168.12.124, the port is 502, and the communication protocol uses Modbus-tcp to write the deceleration instruction to the PLCM200 point (belt speed) of the belt inverter in real time. When the controller receives the alarm signal, the controller provides 127V main power supply to the warning device, and the sound and light warning device performs a sound and light alarm. The controller outputs a 24v alarm signal, and the controller controls the relay coil of the relay to conduct the auxiliary normally open contact, controls the 127v power supply to be connected, and triggers the early warning device to sound and light alarm. The processing device and the controller use the MQTT (asynchronous communication message protocol built on the TCP / IP protocol stack) protocol for data exchange. Please continue to refer to Figure 2 , Figure 2 The upper-level monitoring and storage modules are consistent with the conventional monitoring and storage modules. The upper-level monitoring is preferably a computer on the ground, and the storage module stores the video data and the data processed by the processing device. When the processing device detects that the belt is running off track, it transmits the alarm data to the MQTT server of the upper-level monitoring and storage module. Figure 2 The middle and upper-level monitoring and storage modules immediately receive the alarm data transmitted by the MQTT server, and perform upper-level monitoring, storage module early warning and data storage.

[0044] The embodiment of the utility model processes the data collected by the image acquisition device through the processing device to determine whether the main transport belt is deviated. If the main transport belt is deviated, the belt inverter is controlled by the controller to adjust the speed or stop, thereby improving the deviation detection of the main transport belt in the coal mine.

[0045] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

[0046] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0047] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A detection system for deviation of the main transport belt of a coal mine, characterized in that: include: An image acquisition device, wherein there are multiple image acquisition devices, and the multiple image acquisition devices are installed above the main transport belt area of ​​the main transport belt of the coal mine; A processing device, each of which is connected to a plurality of the image acquisition devices, receives video data transmitted by the image acquisition devices, processes the video data and outputs an alarm signal of deviation of the main transport belt; A controller is connected to the processing device, and receives an alarm signal output by the processing device; the controller is connected to a belt frequency converter of a main transport belt of a coal mine.

2. A coal mine main transport belt deviation detection system according to claim 1, characterized in that: A plurality of the image acquisition devices are located above the main transport belt area of ​​the main transport belt of the coal mine and are sequentially distributed along the main transport belt of the coal mine, so that the plurality of the image acquisition devices are installed at different positions above the main transport belt area of ​​the main transport belt of the coal mine; The plurality of image acquisition devices output the acquired video data to the processing device.

3. A coal mine main transport belt deviation detection system according to claim 1, characterized in that: The image acquisition device is installed just above the main transport belt of the coal mine, and the image acquisition device captures the rollers on both sides of the main transport belt of the coal mine and outputs them to the processing device as video data; The processing device receives the video data and determines whether the main conveyor belt is deviating.

4. A coal mine main transport belt deviation detection system according to claim 1, characterized in that: The image acquisition device is an AI camera; The AI ​​camera is installed on the roof of the coal mine through a hanger. The camera head of the AI ​​camera is installed tilted downward. The AI ​​camera is located above the main transport belt of the coal mine.

5. A coal mine main transport belt deviation detection system according to claim 4, characterized in that: Also includes fill light; The fill-in light is located above the belt roller of the main transport belt of the coal mine, and the fill-in light is suspended on the roof of the coal mine through a hanger.

6. A coal mine main transport belt deviation detection system according to claim 5, characterized in that: An angle less than 180° is formed between the AI ​​camera and the hanger. The AI ​​camera avoids the belt rollers of the main transport belt of the coal mine and is located above the main transport belt of the coal mine.

7. A coal mine main transport belt deviation detection system according to claim 1, characterized in that: Also includes: The sound and light warning device is connected to the processing device, and the sound and light warning device receives the alarm signal of the processing device and alarms according to the alarm signal.

8. A coal mine main transport belt deviation detection system according to claim 7, characterized in that: Also includes: A relay, wherein a relay coil of the relay is connected to the controller, and the controller controls the relay coil to conduct an auxiliary normally open contact of the relay; The relay coil is connected to the sound and light warning device to provide the sound and light warning device with sound and light alarm.

9. A coal mine main transport belt deviation detection system according to claim 1, characterized in that: Also includes: A storage module is connected to the image acquisition device and the processing device, and the storage module stores the video data acquired by the image acquisition device and the data processed by the processing device.

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