Coal mine underground safety monitoring system and method based on dust prevention and control records

Abstract

A coal mine underground safety monitoring system based on dust prevention and control records comprises mobile terminals which are distributed to underground personnel to carry in a one-to-one correspondence mode, and each mobile terminal comprises a positioning module, a marking module and a prompting module; the wireless communication subsystem is used for constructing an underground wireless communication network, and the mobile terminal is accessed to the underground wireless communication network; the video monitoring subsystem is used for shooting working state videos of underground personnel, and the video monitoring subsystem is accessed to an underground wireless communication network; and the central control subsystem is used for generating a prompt instruction for controlling the prompt module according to the personnel position data and the working state video in the underground wireless communication network and based on the personnel position data and the working state video. According to the invention, the underground dust prevention and control condition of the underground personnel can be monitored in real time, and timely reminding is carried out when the dust prevention and control behavior of the underground personnel is improper.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mine dust protection, in particular to a coal mine underground safety monitoring system and method based on dust prevention and control records. Background Art

[0002] Coal mine dust has three characteristics: high concentration, small particle size, and high free silica content, which can cause serious damage to personnel. In order to achieve the prevention and control of coal mine dust, it is necessary to carry out from multiple directions at the same time, including dust suppression, stable operation of ventilation system, and individual protection of personnel. Although the treatment of equipment and environment can effectively reduce the dust concentration in the environment, it cannot completely eliminate dust. Therefore, personal dust prevention and control is a more effective means to ensure individual safety. At present, personal dust prevention and control mainly adopts the method of wearing protective equipment including masks and face masks. However, because these protective equipment can cause many physiological discomforts, such as poor breathing and stuffiness, many personnel are not very motivated. Especially for underground personnel, although there is a ventilation system to supply air, the dust content underground is still very high, and the threat to underground personnel is also greater. Therefore, it is necessary to focus on the dust protection of underground personnel. In the prior art, the dust protection measures of underground personnel are mainly checked and reminded when going down the mine, and the actual effect is very limited. Summary of the invention

[0003] In order to address the deficiencies in the prior art, the present invention provides a coal mine underground safety monitoring system and method based on dust control records, which can monitor the dust control situation of underground personnel in real time, and promptly remind underground personnel when their dust control behavior is inappropriate; mark underground personnel after they have engaged in inappropriate dust control measures so that other personnel around them can remind them in subsequent work processes, allowing underground personnel to correct inappropriate dust control behaviors in a timely manner and improve the safety of underground personnel.

[0004] In order to achieve the above object, the specific scheme adopted by the present invention is:

[0005] A coal mine underground safety monitoring system based on dust prevention and control records, comprising:

[0006] A mobile terminal is assigned to the underground personnel one by one, and includes a positioning module, a marking module and a prompting module. The positioning module is used to collect the personnel position data of the underground personnel, the marking module is used to give a prompting mark to the underground personnel, and the prompting module is used to send an audible and visual prompting signal;

[0007] A wireless communication subsystem, used to construct an underground wireless communication network, wherein the mobile terminal is connected to the underground wireless communication network;

[0008] A video monitoring subsystem, used to capture the working status video of underground personnel, the video monitoring subsystem is connected to the underground wireless communication network;

[0009] The central control subsystem is used to generate prompt instructions for controlling the prompt module based on the personnel position data and the working status video from the underground wireless communication network and based on the personnel position data and the working status video.

[0010] Preferably, the wireless communication subsystem includes a plurality of wireless communication nodes, two adjacent wireless communication nodes are wirelessly connected, and the mobile terminal is wirelessly connected to one of the wireless communication nodes during movement underground.

[0011] Preferably, the video surveillance subsystem includes a plurality of surveillance cameras, and the surveillance cameras are wirelessly connected to at least two of the wireless communication nodes.

[0012] A method for underground safety monitoring of coal mines based on dust prevention and control records, based on the above-mentioned underground safety monitoring system of coal mines based on dust prevention and control records, the method comprises the following steps:

[0013] Deploy and initialize the system, and distribute the mobile terminals one by one to the underground personnel;

[0014] Monitor underground personnel based on a preset monitoring cycle;

[0015] In the previous monitoring cycle, the positioning module is used to collect the dynamic position of the underground personnel, and the video monitoring subsystem is used to collect the dynamic video of the underground personnel;

[0016] The central control subsystem uses the wireless communication subsystem to obtain the dynamic position and the dynamic video, and evaluates the dust prevention and control behavior of underground personnel based on the dynamic position and the dynamic video;

[0017] If the evaluation result of the dust prevention and control behavior evaluation does not meet the preset evaluation safety standard, the prompt module is controlled to send a risk warning signal to the underground personnel, and a risk warning mark corresponding to the underground personnel is generated and sent to the mobile terminal;

[0018] In the next monitoring cycle, the risk warning mark is sent to the marking module, and a warning instruction is issued to a plurality of the mobile terminals based on the relative positions of the mobile terminals.

[0019] Preferably, when the positioning module is used to collect the dynamic position of the underground personnel, the collection is performed based on a preset collection frequency.

[0020] Preferably, the specific method for evaluating the dust prevention and control behavior of underground personnel based on the dynamic position and the dynamic video includes:

[0021] Selecting some key personnel from all underground personnel according to the affiliation relationship between the dynamic position and the pre-set risk area;

[0022] Extracting a portion containing a person of key concern from the dynamic video, and performing frame analysis to obtain a dynamic image;

[0023] Identify the dynamic image to obtain the coverage of the protective measures;

[0024] An assessment result of the dust prevention and control behavior assessment is generated based on the difference between the coverage of the protection measures and the preset standard coverage.

[0025] Preferably, the method for extracting the portion containing the key persons from the dynamic video is: extracting the video segment containing the key persons based on the portable identity tags of the underground personnel.

[0026] Preferably, the prompt instruction includes personnel information corresponding to the underground personnel.

[0027] Preferably, within a plurality of consecutive monitoring cycles, if all the assessment results of the underground personnel do not meet the assessment safety standard, the central control subsystem generates work adjustment data corresponding to the underground personnel.

[0028] The present invention can monitor the dust prevention and control situation of underground personnel in real time, and promptly remind underground personnel when their dust prevention and control behaviors are inappropriate; further, underground personnel are marked after they have engaged in inappropriate dust prevention and control behaviors, so that other personnel around them can remind them in the subsequent work process, so that the underground personnel can correct the inappropriate dust prevention and control behaviors in time, thereby improving the safety of underground personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a structural block diagram of the system of the present invention;

[0031] Figure 2 is a flow chart of the method of the present invention. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] like Figure 1 As shown, a coal mine underground safety monitoring system based on dust prevention and control records includes a wireless communication subsystem, a video monitoring subsystem, a central control subsystem and multiple mobile terminals.

[0034] The mobile terminal is assigned one by one to the underground personnel to carry. The mobile terminal includes a positioning module, a marking module and a prompt module. The positioning module is used to collect the personnel location data of the underground personnel, the marking module is used to assign prompt marks to the underground personnel, and the prompt module is used to send out sound and light prompt signals.

[0035] The wireless communication subsystem is used to construct an underground wireless communication network, and the mobile terminal is connected to the underground wireless communication network.

[0036] The video monitoring subsystem is used to capture the working status of underground personnel. The video monitoring subsystem is connected to the underground wireless communication network.

[0037] The central control subsystem is used to generate prompt instructions for controlling the prompt module based on the personnel position data and work status video from the underground wireless communication network and the personnel position data and work status video.

[0038] When using the present invention to monitor the underground personnel for dust prevention and control, firstly, the mobile terminal is assigned to the underground personnel to carry. When the underground personnel carry the mobile terminal and move underground, the mobile terminal is connected to the wireless communication network constructed by the wireless communication subsystem. When the position of the underground personnel changes, the positioning module is used to collect the dynamic position of the underground personnel, and it is sent to the central control subsystem through the wireless communication network. On the other hand, the video monitoring subsystem is used to shoot the working status video of the underground personnel, and it is also sent to the central control subsystem through the wireless communication network. After obtaining the dynamic position and working status video of the underground personnel, the central control subsystem determines whether the area where the underground personnel is located is an area with a large amount of dust based on the dynamic position, and evaluates the dust prevention and control behavior of the underground personnel in combination with the protective measures of the underground personnel reflected in the working status video. If the dust protection measures of the underground personnel are unqualified, a prompt is issued to the underground personnel through the control prompt module, and the unqualified prevention and control behavior of the underground personnel is recorded. In the subsequent work process, a reminder mark is assigned to the underground personnel through the control mark module. During the movement of the underground personnel, if the mobile terminal finds that other mobile terminals close to itself are assigned reminder marks, a reminder is issued through its own reminder module to remind several underground personnel in close positions to remind each other and correct dust prevention and control behaviors in time to improve the safety of underground personnel.

[0039] The present invention can monitor the dust prevention and control situation of underground personnel in real time, and promptly remind underground personnel when their dust prevention and control behaviors are inappropriate; further, underground personnel are marked after they have engaged in inappropriate dust prevention and control behaviors, so that other personnel around them can remind them in the subsequent work process, so that the underground personnel can correct the inappropriate dust prevention and control behaviors in time, thereby improving the safety of underground personnel.

[0040] The specific structure of the wireless communication subsystem is as follows: the wireless communication subsystem includes multiple wireless communication nodes, two adjacent wireless communication nodes are wirelessly connected, and the mobile terminal is wirelessly connected to one of the wireless communication nodes during the underground movement. The wireless communication nodes can communicate based on existing communication technologies, such as WIFI technology. Considering that underground equipment requires extremely high safety, all wireless communication nodes need to be explosion-proof to avoid safety accidents caused by internal current. The positioning module of the mobile terminal can achieve positioning based on the wireless communication network, and the appropriate indoor positioning technology can be selected based on the wireless communication technology adopted by the wireless communication network. All of them are mature existing technologies and will not be described here.

[0041] The specific structure of the video surveillance subsystem is as follows: the video surveillance subsystem includes multiple surveillance cameras, and the surveillance cameras are wirelessly connected to at least two wireless communication nodes. Surveillance cameras are mature existing technologies and will not be described in detail here. Considering that the transmission of videos consumes a lot of resources, in order to ensure the security of video transmission and avoid video loss during transmission, a surveillance camera is connected to at least two wireless communication nodes, which can be transmitted along different communication links to ensure the security of video data.

[0042] like Figure 2 As shown, the present invention further provides a method for underground safety monitoring of coal mines based on dust control records. Based on the above-mentioned underground safety monitoring system of coal mines based on dust control records, the method includes S1 to S6.

[0043] S1. Deploy and initialize the system, and assign the mobile terminals to the underground personnel one by one. When initializing the system, it is necessary to assign a device code to each wireless communication node, surveillance camera, and mobile terminal to facilitate the determination of the specific location of the device or the corresponding underground personnel.

[0044] S2. Monitor underground personnel based on a preset monitoring cycle.

[0045] S3. In the previous monitoring cycle, the positioning module is used to collect the dynamic position of the underground personnel, and the video monitoring subsystem is used to collect the dynamic video of the underground personnel. Considering that the position of the underground personnel is not static when working underground, but will change constantly, if the positioning is performed uninterruptedly, the amount of dynamic position data generated will be too large, which will cause the wireless communication network to be overloaded and will also generate a higher load in the subsequent processing process. Therefore, when the positioning module is used to collect the dynamic position of the underground personnel, the collection is performed based on the preset collection frequency. By periodically collecting the dynamic position, the amount of dynamic position data can be significantly reduced, thereby reducing the communication and processing load.

[0046] S4. The central control subsystem uses the wireless communication subsystem to obtain the dynamic position and dynamic video, and evaluates the dust prevention and control behavior of the underground personnel based on the dynamic position and dynamic video. The specific method of evaluating the dust prevention and control behavior of the underground personnel based on the dynamic position and dynamic video includes S41 to S44.

[0047] S41. Select some key personnel from all underground personnel based on the affiliation between the dynamic position and the pre-set risk area. The risk area refers to an area with a large amount of dust. The actual situation of each mining area is different, and the location of the risk area is also different, which needs to be determined according to the actual situation. The possibility of underground personnel staying in the risk area for a long time is greatly increased. Therefore, it is necessary to first screen the underground personnel based on whether the dynamic position is in the risk area, and select some underground personnel who have stayed in the risk area for a long time as key personnel. Considering that the lighting conditions underground are poor and dust will contaminate the clothes and cameras of underground personnel, in order to better determine the identity of underground personnel, the method of extracting the part containing key personnel from the dynamic video is: extracting the video clip containing key personnel based on the portable identity tag of the underground personnel. The portable identity tag can be in bright colors to facilitate distinction from the surrounding environment, thereby facilitating the rapid determination of the identity of the underground personnel.

[0048] S42, extracting the part containing the key persons from the dynamic video, and performing frame analysis to obtain a dynamic image. The dynamic video can be processed using an existing image processing algorithm based on a neural network, which is a mature existing technology and will not be described in detail here.

[0049] S43. Recognize the dynamic image to obtain the coverage of the protective measures. The coverage of the protective measures is used to characterize the coverage of the face of the underground personnel by the protective measures such as masks or face shields worn by the underground personnel, and is mainly used to determine whether the mouth and nose are correctly covered. The recognition method can also use an image recognition method based on a neural network, which is also a mature existing technology and will not be repeated here.

[0050] S44. Generate an assessment result of the dust control behavior assessment based on the difference between the coverage of the protective measures and the preset standard coverage. If the coverage of the protective measures reaches the standard coverage, it means that the protective measures of the underground personnel are in place; otherwise, it means that the protective measures of the underground personnel are inappropriate and need to be corrected in time.

[0051] S5. If the evaluation result of the dust prevention and control behavior evaluation does not meet the preset evaluation safety standard, the control prompt module sends a risk warning signal to the underground personnel, generates a risk warning mark corresponding to the underground personnel, and sends it to the mobile terminal. Specifically, if it is found during the monitoring process that the dust protection measures of the underground personnel are inappropriate, a prompt will be directly issued to them, and the underground personnel will be marked.

[0052] S6. In the next monitoring cycle, the risk warning mark is sent to the marking module, and a prompt instruction is issued to several mobile terminals based on the relative position of the mobile terminal. For underground personnel who have been marked because of improper dust prevention and control behavior, other personnel need to pay special attention to them and remind them to take dust protection measures in the subsequent work process. In order to facilitate the identification of the underground personnel who need to be lifted, the prompt instruction includes the personnel information corresponding to the underground personnel, and the personnel information is consistent with the information recorded in the portable identity tag.

[0053] Furthermore, if all the assessment results of underground personnel do not meet the assessment safety standards in multiple consecutive monitoring cycles, the central control subsystem generates work adjustment data corresponding to the underground personnel. If there are underground personnel who have improper dust prevention and control measures in multiple consecutive monitoring cycles, their work content needs to be adjusted through work adjustment data or they need to be reprimanded.

[0054] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0055] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A coal mine underground safety monitoring system based on dust prevention and control records, characterized in that: include: A mobile terminal is assigned to the underground personnel one by one, and includes a positioning module, a marking module and a prompting module. The positioning module is used to collect the personnel position data of the underground personnel, the marking module is used to give a prompting mark to the underground personnel, and the prompting module is used to send an audible and visual prompting signal; A wireless communication subsystem, used to construct an underground wireless communication network, wherein the mobile terminal is connected to the underground wireless communication network; A video monitoring subsystem, used to capture the working status video of underground personnel, the video monitoring subsystem is connected to the underground wireless communication network; The central control subsystem is used to generate prompt instructions for controlling the prompt module based on the personnel position data and the working status video from the underground wireless communication network and based on the personnel position data and the working status video.

2. A coal mine underground safety monitoring system based on dust prevention and control records as claimed in claim 1, characterized in that: The wireless communication subsystem includes a plurality of wireless communication nodes, two adjacent wireless communication nodes are wirelessly connected, and the mobile terminal is wirelessly connected to one of the wireless communication nodes during movement underground.

3. A coal mine underground safety monitoring system based on dust prevention and control records as claimed in claim 2, characterized in that: The video monitoring subsystem includes a plurality of monitoring cameras, and the monitoring cameras are wirelessly connected to at least two of the wireless communication nodes.

4. A method for underground safety monitoring in coal mines based on dust prevention and control records, characterized in that: Based on a coal mine underground safety monitoring system based on dust prevention and control records as described in any one of claims 1 to 3, the method comprises the following steps: Deploy and initialize the system, and distribute the mobile terminals one by one to the underground personnel; Monitor underground personnel based on a preset monitoring cycle; In the previous monitoring cycle, the positioning module is used to collect the dynamic position of the underground personnel, and the video monitoring subsystem is used to collect the dynamic video of the underground personnel; The central control subsystem uses the wireless communication subsystem to obtain the dynamic position and the dynamic video, and evaluates the dust prevention and control behavior of underground personnel based on the dynamic position and the dynamic video; If the evaluation result of the dust prevention and control behavior evaluation does not meet the preset evaluation safety standard, the prompt module is controlled to send a risk warning signal to the underground personnel, and a risk warning mark corresponding to the underground personnel is generated and sent to the mobile terminal; In the next monitoring cycle, the risk warning mark is sent to the marking module, and a warning instruction is issued to a plurality of the mobile terminals based on the relative positions of the mobile terminals.

5. A method for underground coal mine safety monitoring based on dust control records as claimed in claim 4, characterized in that: When the positioning module is used to collect the dynamic position of the underground personnel, the collection is performed based on a preset collection frequency.

6. A method for underground safety monitoring in coal mines based on dust prevention and control records as claimed in claim 4, characterized in that: The specific method for evaluating the dust prevention and control behavior of underground personnel based on the dynamic position and the dynamic video includes: Selecting some key personnel from all underground personnel according to the affiliation relationship between the dynamic position and the pre-set risk area; Extracting a portion containing a person of key concern from the dynamic video, and performing frame analysis to obtain a dynamic image; Identify the dynamic image to obtain the coverage of the protective measures; An assessment result of the dust prevention and control behavior assessment is generated based on the difference between the coverage of the protection measures and the preset standard coverage.

7. A method for underground coal mine safety monitoring based on dust prevention and control records as claimed in claim 6, characterized in that: The method for extracting the portion containing the key persons from the dynamic video is: extracting the video segment containing the key persons based on the identity tags carried by the underground personnel.

8. A method for underground safety monitoring in coal mines based on dust prevention and control records as claimed in claim 4, characterized in that: The prompt instruction includes personnel information corresponding to the underground personnel.

9. A method for underground safety monitoring in coal mines based on dust prevention and control records as claimed in claim 4, characterized in that: In a plurality of consecutive monitoring cycles, if all the evaluation results of the underground personnel do not meet the evaluation safety standard, the central control subsystem generates work adjustment data corresponding to the underground personnel.

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