A coal mine precise positioning intelligent control system and control method

Abstract

The present invention discloses a coal mine precise positioning intelligent management and control system and management method. The coal mine precise positioning intelligent management and control system includes: an underground positioning system for collecting real-time information about underground personnel in restricted areas and reporting the restricted number of people in the restricted areas and the actual number of people in the restricted areas at the current moment in real time; and an above-ground monitoring system for receiving the underground personnel information in the restricted areas uploaded by the underground positioning system and viewing the real-time data of underground personnel in the restricted areas in real time. The present invention provides a coal mine precise positioning intelligent management and control system and management method. The system utilizes precise positioning to accurately control the location information of underground personnel, comprehensively judge whether personnel are overtime or overcrowded, and ensure the safety of underground personnel.

Description

Technical Field

[0001] The present invention relates to a coal mine precise positioning intelligent management and control system and a management and control method. Background Art

[0002] Currently, the personnel management system plays a crucial role in coal mining and is an integral part of coal mine safety. If personnel management system optimization technology is not in place, and overstaffing and overtime are not strictly managed, accidents can seriously impact mine safety. Therefore, research on intelligent control of precise positioning systems is of great practical significance.

[0003] Although many domestic companies have launched personnel positioning systems, most of them are limited to basic personnel management, and there is no further expansion and development of applications based on basic data and the needs of coal mines. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide a coal mine precise positioning intelligent management and control system and management method, which uses precise positioning to accurately control the location information of underground personnel, comprehensively judge personnel overtime and overcrowding, and ensure the safety of underground personnel.

[0005] In order to solve the above technical problems, the technical solution of the present invention is:

[0006] The present invention provides a coal mine precise positioning intelligent management and control system, which includes:

[0007] An underground positioning system, which is used to collect information about underground personnel in restricted areas in real time, and to report the number of people in the restricted area and the actual number of people in the restricted area at the current moment in real time;

[0008] The uphole monitoring system is used to receive the underground personnel information in the restricted area uploaded by the downhole positioning system, and to view the real-time data of the underground personnel in the restricted area in real time.

[0009] Furthermore, the downhole positioning system includes downhole identification cards, downhole card reading substations and downhole communication ring networks;

[0010] The underground identification card is worn by underground personnel and is used to send signals to the underground card reading substation;

[0011] The underground card reading substation is used to receive the signal sent by the underground identification card and determine the position of the underground identification card;

[0012] The underground card reading substation communicates with the surface monitoring system through the underground communication ring network.

[0013] Furthermore, the underground positioning system also includes an underground large screen and an underground broadcast. The underground large screen is used to display the restricted number of people in the restricted area and the actual number of people in the restricted area at the current moment in real time. The underground broadcast is used to broadcast the actual number of people in the restricted area at the current moment in real time.

[0014] Furthermore, the well monitoring system includes a client, a web terminal, a mobile APP and a server;

[0015] The server receives the underground identification card location information uploaded by the underground card reading substation through the underground communication ring network. The server is used to make real-time statistics on the number of underground personnel in the restricted area, and to issue timeout and overcrowding alarm prompts and record the number of people who have exceeded the time limit; surface personnel can view the real-time data of underground personnel in the restricted area through the client, web and mobile app.

[0016] Another aspect of the present invention provides a control method for a coal mine precise positioning intelligent control system, which comprises:

[0017] Step S1: According to the regulations of the relevant safety department on personnel limits in key areas, a specified number of people is set in the underground working area of ​​the coal mine, and corresponding underground card reading substations are installed in the working area, and underground personnel wear underground identification cards;

[0018] Step S2: Generate a two-dimensional map based on the underground working area of ​​the coal mine where the underground card reading substation is installed, and set the regional entrance of the working area in the two-dimensional map according to the actual situation underground. The regional entrance serves as a boundary for judging whether underground personnel have entered the working area;

[0019] Step S3: Through communication between the underground identification cards worn by underground personnel and the underground card reading substation, statistical analysis is performed on the real-time number of personnel entering the work area and the personnel distribution, to determine whether there is overcrowding and timeout in the current work area;

[0020] Step S4: If the current working area is found to have overcrowded and overtime personnel, an alarm is issued.

[0021] Furthermore, step S3 specifically includes the following steps:

[0022] When underground personnel wearing underground identification cards enter the work area, the underground card reading substation at the work area entrance obtains the underground identification card information, counts the number of people entering the work area and the time, and determines overcrowding based on the number of people entering the work area. At the same time, it determines overtime based on the length of time the underground personnel have worked in the work area.

[0023] Obtain the position of the underground identification card in the working area tunnel to determine the distribution of underground personnel in the working area.

[0024] Furthermore, the overcrowding determination based on the number of people entering the work area specifically includes the following steps:

[0025] Step S301: Get the number of workers in the current work area, and then determine whether the shift is limited; if so, get the rated number of people in the current shift in the work area, and then proceed to step S302; if not, get the rated number of people in the work area, and then proceed to step S302;

[0026] Step S302: Determine whether the number of people in the work area is greater than the rated number; if so, proceed to step S303; if not, proceed to step S304;

[0027] Step S303: Determine whether there is an overcrowding alarm in the work area. If not, generate a regional overcrowding alarm. If so, determine whether the number of people in the current work area exceeds the maximum number of people for the regional overcrowding alarm. If the number of people in the current work area exceeds the maximum number of people for the regional overcrowding alarm, modify the maximum number of people for the regional overcrowding alarm.

[0028] Step S304: determine whether there is an overcrowding alarm in the work area. If so, save the overcrowding alarm in the work area as a historical record and cancel the real-time area overcrowding alarm.

[0029] Furthermore, obtaining the position of the underground identification card in the working area tunnel specifically includes the following steps:

[0030] Step S311: The two downhole card reading substations obtain two pieces of real-time downhole identification card information from the downhole identification card, and determine whether the two downhole card reading substations that have received the two pieces of real-time downhole identification card information correspond to the same lane; if so, proceed to step S312; if not, proceed to step S313;

[0031] Step S312: Determine whether the check time of the two real-time downhole identification card information is within 5 seconds and the distance between the two downhole card reading substations is no more than 20 meters; if so, determine the direction of the downhole identification card and the starting point of the roadway relative to the two downhole card reading substations, and map the position of the downhole identification card in the roadway; if not, continue to map the current downhole identification card to the roadway position based on the direction of the downhole identification card and the starting point of the roadway;

[0032] Step S313, determine whether the real-time downhole identification card information has been mapped to the lane. If so, continue to map the current downhole identification card to the lane position in the direction of the downhole identification card and the lane starting point; if not, default to mapping the current downhole identification card to the lane position in the same direction as the downhole identification card and the lane starting point.

[0033] Furthermore, in step S312, determining the directions of the underground identification card and the tunnel starting point relative to the two underground card reading substations specifically includes the following steps:

[0034] Step S3121: Determine the directionality of the downhole identification card

[0035] Known conditions:

[0036] The latest underground card reading substation is substation 1, and the distance between the underground identification card and substation 1 is d1;

[0037] The last underground card reading substation is substation 2, and the distance between the underground identification card and substation 2 is d2;

[0038] The distance between substation 1 and substation 2 is d;

[0039] The conditions for judging whether the underground identification card is on the inner side of substation 1 are:

[0040] (d1>d2&&d1>d) || (d>d1&&d>d2);

[0041] If the condition that the underground identification card is on the inner side of substation 1 is not met, it means that the underground identification card is on the outer side of substation 1;

[0042] Step S3122: Determine the directionality of the lane starting point

[0043] Known conditions:

[0044] The latest underground card reading substation is substation 1, and the distance between the tunnel starting point and substation 1 is e1;

[0045] The last underground card reading substation is substation 2, and the distance between the starting point of the tunnel and substation 2 is e2;

[0046] The distance between substation 1 and substation 2 is d;

[0047] The conditions for determining that the starting point of the lane is inside the substation 1 are:

[0048] (e1>e2&&e1>d) || (d>e1&&d>e2);

[0049] If the condition that the lane start point is inside the substation 1 is not met, it means that the lane start point is outside the substation 1;

[0050] Step S3123: Calculate the position of the underground identification card in the tunnel

[0051] When the underground identification card and the starting point of the roadway are in the same direction, the distance between the underground identification card in the roadway and the starting point of the roadway is:

[0052] Distance1= e1-d1;

[0053] When the underground identification card and the starting point of the tunnel are in opposite directions, the distance between the underground identification card in the tunnel and the starting point of the tunnel is:

[0054] Distance2 = e1+d1.

[0055] Furthermore, step S4 specifically includes the following steps:

[0056] If the real-time personnel statistics of the current working area show that there is an overcrowding and timeout, the large screen underground will display the restricted number of people in the restricted area and the actual number of people in the restricted area at the current moment in real time, and the underground radio will broadcast the actual number of people in the restricted area at the current moment and the alarm situation in real time. In order to draw the attention of relevant management personnel to the overcrowding and timeout situation in the coal mine, when key areas are overcrowded or underground personnel are overcrowded and timeout, relevant management personnel will receive alarm information push through the client, web and mobile app.

[0057] The above-mentioned technical solution is adopted. In order to achieve precise management and control of personnel underground in coal mines, the present invention carries out intelligent management and control of the precise positioning system according to the provisions of the personnel's underground working hours, and realizes the dual-prevention linkage management of accurate early warning and information push for overcrowding and personnel timeout in key work areas. The entire mine and area of ​​Tangkou Coal Mine are divided and confirmed, and the setting and judgment rules of mine timeout and overcrowding are obtained. Then, multi-level early warning of timeout and overcrowding is carried out through the precise location of personnel, realizing the full process of data visualization, advanced prevention and control, early warning prompts, information push, and information closed loop to ensure the refined management of underground personnel. Compared with similar technologies, the present invention is unique in concept, simple and easy to implement, and has good market demand and promotion and application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 This is a principle block diagram of the coal mine precise positioning intelligent management and control system of the present invention;

[0059] Figure 2 This is a flow chart of the present invention for determining overcrowding based on the number of people entering the work area;

[0060] Figure 3 This is a flow chart of obtaining the position of an underground identification card in a working area lane of the present invention;

[0061] Figure 4 A schematic diagram of the logic for determining whether an underground identification card is inside or outside the latest card reading substation according to the present invention;

[0062] Figure 5 A schematic diagram of the logic for determining whether the tunnel starting point is inside or outside the latest underground card reading substation according to the present invention;

[0063] Figure 6 It is a two-dimensional map of the underground working area of ​​the present invention. DETAILED DESCRIPTION

[0064] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0065] Example 1

[0066] like Figure 1 As shown, this embodiment provides a coal mine precise positioning intelligent management and control system, which includes:

[0067] The underground positioning system is used to collect information about underground personnel in restricted areas in real time, and to report the number of people in the restricted area and the actual number of people in the restricted area at the current moment in real time;

[0068] The surface monitoring system is used to receive the underground personnel information in the restricted area uploaded by the downhole positioning system, and to view the real-time data of underground personnel in the restricted area in real time.

[0069] Specifically, the downhole positioning system of this embodiment includes a downhole identification card, a downhole card reading substation and a downhole communication ring network;

[0070] The underground identification card is worn by underground personnel and is used to send signals to the underground card reading substation;

[0071] The underground card reading substation is used to receive the signal sent by the underground identification card and determine the location of the underground identification card;

[0072] The underground card reading substation communicates with the surface monitoring system through the underground communication ring network.

[0073] Specifically, the underground positioning system of this embodiment also includes an underground large screen and an underground broadcast. The underground large screen is used to display the restricted number of people in the restricted area and the actual number of people in the restricted area at the current moment in real time, and the underground broadcast is used to broadcast the actual number of people in the restricted area at the current moment in real time.

[0074] Specifically, the well monitoring system of this embodiment includes a client, a web terminal, a mobile APP and a server;

[0075] The server receives the underground identification card location information uploaded by the underground card reading substation through the underground communication ring network. The server is used to conduct real-time statistics on the number of underground personnel in the restricted area, and to issue timeout and overcrowding alarm prompts and record the number of people who have exceeded the time limit; surface personnel can view the real-time data of underground personnel in the restricted area through the client, web and mobile app.

[0076] Example 2

[0077] This embodiment provides a control method for a coal mine precise positioning intelligent control system, which includes:

[0078] Step S1: According to the regulations of the relevant safety department on personnel limits in key areas, a specified number of people is set in the underground working area of ​​the coal mine, and corresponding underground card reading substations are installed in the working area, and underground personnel wear underground identification cards;

[0079] Step S2: Generate a two-dimensional map based on the underground working area of ​​the coal mine where the underground card reading substation is installed, such as Figure 6 As shown, the regional entrance of the working area is set in the two-dimensional map according to the actual situation underground, and the regional entrance serves as the boundary for judging whether the underground personnel have entered the working area;

[0080] Step S3: Through communication between the underground identification cards worn by underground personnel and the underground card reading substation, statistical analysis is performed on the real-time number of personnel entering the work area and the personnel distribution, to determine whether there is overcrowding and timeout in the current work area;

[0081] Step S4: If the current working area is found to have overcrowded and overtime personnel, an alarm is issued.

[0082] Specifically, step S3 includes the following steps:

[0083] When underground personnel wearing underground identification cards enter the work area, the underground card reading substation at the work area entrance obtains the underground identification card information, counts the number of people entering the work area and the time, and determines overcrowding based on the number of people entering the work area. At the same time, it determines overtime based on the length of time the underground personnel have worked in the work area.

[0084] Obtain the position of the underground identification card in the working area tunnel to determine the distribution of underground personnel in the working area.

[0085] Specifically, if Figure 2 As shown, overcrowding is determined based on the number of people entering the work area, specifically including the following steps:

[0086] Step S301: Get the number of workers in the current work area, and then determine whether the shift is limited; if so, get the rated number of people in the current shift in the work area, and then proceed to step S302; if not, get the rated number of people in the work area, and then proceed to step S302;

[0087] Step S302: Determine whether the number of people in the work area is greater than the rated number; if so, proceed to step S303; if not, proceed to step S304;

[0088] Step S303: Determine whether there is an overcrowding alarm in the work area. If not, generate a regional overcrowding alarm. If so, determine whether the number of people in the current work area is higher than the maximum number of people for the regional overcrowding alarm. If the number of people in the current work area is higher than the maximum number of people for the regional overcrowding alarm, modify the maximum regional overcrowding number for the regional overcrowding alarm. Set the number of people for the overcrowding alarm to 10. If the number of people in the work area reaches 11, determine whether an overcrowding alarm has been issued for the work area at this time. If no alarm has been issued, generate a regional overcrowding alarm. If an overcrowding alarm already exists for the work area, modify the maximum regional overcrowding number for the regional overcrowding alarm. For example, 11 people is a mild overcrowding alarm, 13 people is a moderate overcrowding alarm, and 15 people is a severe overcrowding alarm.

[0089] Step S304: Determine whether an overcrowding alarm has occurred for the work area. If so, save the work area overcrowding alarm as a historical record and cancel the real-time regional overcrowding alarm. For example, if the number of people in the overcrowding alarm is set to 10, then if the number of people in the work area is initially 11, an overcrowding alarm will occur. However, if the number of people in the work area decreases to 9, no alarm should occur. Therefore, the real-time regional overcrowding alarm needs to be canceled and the last work area overcrowding alarm needs to be saved as a historical record.

[0090] Specifically, if Figure 4 、 6 As shown, obtaining the position of the underground identification card in the working area tunnel specifically includes the following steps:

[0091] Step S311: In this embodiment, the downhole card reading substations are arranged in pairs. The two downhole card reading substations obtain two pieces of real-time downhole identification card information from the downhole identification card. Each of the two downhole card reading substations receives one piece of information. Then, it is determined whether the two downhole card reading substations that received the two pieces of real-time downhole identification card information correspond to the same lane. If so, the process proceeds to step S312; if not, the process proceeds to step S313.

[0092] Step S312: Determine whether the check time of the two real-time downhole identification card information is within 5 seconds and the distance between the two downhole card reading substations is no more than 20 meters; if so, determine the direction of the downhole identification card and the starting point of the roadway relative to the two downhole card reading substations, and map the position of the downhole identification card in the roadway; if not, continue to map the current downhole identification card to the roadway position based on the direction of the downhole identification card and the starting point of the roadway;

[0093] Step S313, determine whether the real-time downhole identification card information has been mapped to the lane. If so, continue to map the current downhole identification card to the lane position in the direction of the downhole identification card and the lane starting point; if not, default to mapping the current downhole identification card to the lane position in the same direction as the downhole identification card and the lane starting point.

[0094] The function of the zone port is to determine the entrance and exit of the working area: if a non-zone port card reader receives an underground identification card, it is considered that the underground identification card has entered the zone; if an underground identification card arrives at a zone port card reader from the zone, it is considered that the underground identification card has left the zone. If no zone port is set, then any underground identification card detected by a card reader in the working area is considered to have entered the zone; a underground identification card originally in the zone is considered to have left the zone if it is detected by any card reader outside the zone.

[0095] Specifically, in step S312, determining the directions of the underground identification card and the tunnel starting point relative to the two underground card reading substations specifically includes the following steps:

[0096] Step S3121: Determine the directionality of the downhole identification card

[0097] like Figure 4 As shown in the figure, the logic for judging whether the underground identification card is inside or outside the latest card reading station is:

[0098] Known conditions:

[0099] The latest underground card reading substation is substation 1, and the distance between the underground identification card and substation 1 is d1;

[0100] The last underground card reading substation is substation 2, and the distance between the underground identification card and substation 2 is d2;

[0101] The distance between substation 1 and substation 2 is d;

[0102] The conditions for judging whether the underground identification card is on the inner side of substation 1 are:

[0103] (d1>d2&&d1>d) || (d>d1&&d>d2);

[0104] If the condition that the underground identification card is on the inner side of substation 1 is not met, it means that the underground identification card is on the outer side of substation 1;

[0105] Step S3122: Determine the directionality of the lane starting point

[0106] like Figure 5 As shown in the figure, the logic for determining whether the tunnel starting point is inside or outside the latest underground card reading station is:

[0107] Known conditions:

[0108] The latest underground card reading substation is substation 1, and the distance between the tunnel starting point and substation 1 is e1;

[0109] The last underground card reading substation is substation 2, and the distance between the starting point of the tunnel and substation 2 is e2;

[0110] The distance between substation 1 and substation 2 is d;

[0111] The conditions for determining that the starting point of the lane is inside the substation 1 are:

[0112] (e1>e2&&e1>d) || (d>e1&&d>e2);

[0113] If the condition that the lane start point is inside the substation 1 is not met, it means that the lane start point is outside the substation 1;

[0114] Step S3123: Calculate the position of the underground identification card in the tunnel

[0115] When the underground identification card and the starting point of the roadway are in the same direction, the distance between the underground identification card in the roadway and the starting point of the roadway is:

[0116] Distance1= e1-d1;

[0117] When the underground identification card and the starting point of the tunnel are in opposite directions, the distance between the underground identification card in the tunnel and the starting point of the tunnel is:

[0118] Distance2 = e1+d1.

[0119] Specifically, step S4 includes the following steps:

[0120] If the real-time personnel statistics of the current working area show that there is an overcrowding and timeout, the large screen underground will display the restricted number of people in the restricted area and the actual number of people in the restricted area at the current moment in real time, and the underground radio will broadcast the actual number of people in the restricted area at the current moment and the alarm situation in real time. In order to draw the attention of relevant management personnel to the overcrowding and timeout situation in the coal mine, when key areas are overcrowded or underground personnel are overcrowded and timeout, relevant management personnel will receive alarm information push through the client, web and mobile app.

[0121] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A control method for a coal mine precise positioning intelligent control system, characterized in that: The coal mine precise positioning intelligent management and control system includes: An underground positioning system, which is used to collect information about underground personnel in restricted areas in real time, and to report the number of people in the restricted area and the actual number of people in the restricted area at the current moment in real time; An uphole monitoring system, which is used to receive information about underground personnel in restricted areas uploaded by the downhole positioning system and to view real-time data of underground personnel in restricted areas; The control method of the coal mine precise positioning intelligent control system includes: Step S1: Set a specified number of people in the underground working area of ​​the coal mine, install corresponding underground card reading substations in the working area, and require underground personnel to wear underground identification cards; Step S2: Generate a two-dimensional map based on the underground working area of ​​the coal mine where the underground card reading substation is installed, and set the regional entrance of the working area in the two-dimensional map according to the actual situation underground. The regional entrance serves as a boundary for judging whether underground personnel have entered the working area; Step S3: Through communication between the underground identification cards worn by underground personnel and the underground card reading substation, statistical analysis is performed on the real-time number of personnel entering the work area and the personnel distribution, to determine whether there is overcrowding and timeout in the current work area; Step S4: If the real-time personnel in the current working area are found to be overcrowded and overtime, an alarm is issued; The step S3 specifically includes the following steps: When underground personnel wearing underground identification cards enter the work area, the underground card reading substation at the work area entrance obtains the underground identification card information, counts the number of people entering the work area and the time, and determines overcrowding based on the number of people entering the work area. At the same time, it determines overtime based on the length of time the underground personnel have worked in the work area. Obtain the location of the underground identification card in the working area tunnel to determine the distribution of underground personnel in the working area; The overcrowding judgment based on the number of people entering the work area specifically includes the following steps: Step S301: Get the number of workers in the current work area, and then determine whether the shift is limited; if so, get the rated number of people in the current shift in the work area, and then proceed to step S302; if not, get the rated number of people in the work area, and then proceed to step S302; Step S302: Determine whether the number of people in the work area is greater than the rated number; if so, proceed to step S303; if not, proceed to step S304; Step S303: Determine whether there is an overcrowding alarm in the work area. If not, generate a regional overcrowding alarm. If so, determine whether the number of people in the current work area exceeds the maximum number of people for the regional overcrowding alarm. If the number of people in the current work area exceeds the maximum number of people for the regional overcrowding alarm, modify the maximum number of people for the regional overcrowding alarm. Step S304: determine whether there is an overcrowding alarm in the work area. If so, save the overcrowding alarm in the work area as a historical record and cancel the real-time area overcrowding alarm.

2. The control method of the coal mine precise positioning intelligent control system according to claim 1, characterized in that: The downhole positioning system includes downhole identification cards, downhole card reading substations and downhole communication ring networks; The underground identification card is worn by underground personnel and is used to send signals to the underground card reading substation; The underground card reading substation is used to receive the signal sent by the underground identification card and determine the position of the underground identification card; The underground card reading substation communicates with the surface monitoring system through the underground communication ring network.

3. The control method of the coal mine precise positioning intelligent control system according to claim 2, characterized in that: The underground positioning system also includes an underground large screen and an underground broadcast. The underground large screen is used to display the restricted number of people in the restricted area and the actual number of people in the restricted area at the current moment in real time. The underground broadcast is used to broadcast the actual number of people in the restricted area at the current moment in real time.

4. The control method of the coal mine precise positioning intelligent control system according to claim 2, characterized in that: The well monitoring system includes a client, a web terminal, a mobile APP and a server; The server receives the underground identification card location information uploaded by the underground card reading substation through the underground communication ring network. The server is used to make real-time statistics on the number of underground personnel in the restricted area, and to issue timeout and overcrowding alarm prompts and record the number of people who have exceeded the time limit; surface personnel can view the real-time data of underground personnel in the restricted area through the client, web and mobile app.

5. The control method of the coal mine precise positioning intelligent control system according to claim 1, characterized in that: The method of obtaining the position of the underground identification card in the working area tunnel specifically includes the following steps: Step S311: The two downhole card reading substations obtain two pieces of real-time downhole identification card information from the downhole identification card, and determine whether the two downhole card reading substations that have received the two pieces of real-time downhole identification card information correspond to the same lane; if so, proceed to step S312; if not, proceed to step S313; Step S312: Determine whether the check time of the two real-time downhole identification card information is within 5 seconds and the distance between the two downhole card reading substations is no more than 20 meters; if so, determine the direction of the downhole identification card and the starting point of the roadway relative to the two downhole card reading substations, and map the position of the downhole identification card in the roadway; if not, continue to map the current downhole identification card to the roadway position based on the direction of the downhole identification card and the starting point of the roadway; Step S313, determine whether the real-time downhole identification card information has been mapped to the lane. If so, continue to map the current downhole identification card to the lane position in the direction of the downhole identification card and the lane starting point; if not, default to mapping the current downhole identification card to the lane position in the same direction as the downhole identification card and the lane starting point.

6. The control method of the coal mine precise positioning intelligent control system according to claim 5, characterized in that: In step S312, determining the directions of the underground identification card and the tunnel starting point relative to the two underground card reading substations specifically includes the following steps: Step S3121: Determine the directionality of the downhole identification card Known conditions: The latest underground card reading substation is substation 1, and the distance between the underground identification card and substation 1 is d1; The last underground card reading substation is substation 2, and the distance between the underground identification card and substation 2 is d2; The distance between substation 1 and substation 2 is d; The conditions for judging whether the underground identification card is on the inner side of substation 1 are: (d1>d2&&d1>d) || (d>d1&&d>d2); If the condition that the underground identification card is on the inner side of substation 1 is not met, it means that the underground identification card is on the outer side of substation 1; Step S3122: Determine the directionality of the lane starting point Known conditions: The latest underground card reading substation is substation 1, and the distance between the tunnel starting point and substation 1 is e1; The last underground card reading substation is substation 2, and the distance between the starting point of the tunnel and substation 2 is e2; The distance between substation 1 and substation 2 is d; The conditions for determining that the starting point of the lane is inside the substation 1 are: (e1>e2&&e1>d) || (d>e1&&d>e2); If the condition that the lane start point is inside the substation 1 is not met, it means that the lane start point is outside the substation 1; Step S3123: Calculate the position of the underground identification card in the tunnel When the underground identification card and the starting point of the roadway are in the same direction, the distance between the underground identification card in the roadway and the starting point of the roadway is: Distance1= e1-d1; When the underground identification card and the starting point of the tunnel are in opposite directions, the distance between the underground identification card in the tunnel and the starting point of the tunnel is: Distance2 = e1+d1.

7. The control method of the coal mine precise positioning intelligent control system according to claim 1, characterized in that: The step S4 specifically includes the following steps: If the real-time personnel statistics of the current working area show that there is an overcrowding and timeout, the large screen underground will display the restricted number of people in the restricted area and the actual number of people in the restricted area at the current moment in real time, and the underground radio will broadcast the actual number of people in the restricted area at the current moment and the alarm situation in real time. In order to draw the attention of relevant management personnel to the overcrowding and timeout situation in the coal mine, when key areas are overcrowded or underground personnel are overcrowded and timeout, relevant management personnel will receive alarm information push through the client, web and mobile app.

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