CN111550289A - Method, management server and system suitable for coal face area limitation - Google Patents
Method, management server and system suitable for coal face area limitation Download PDFInfo
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Abstract
The embodiment of the invention discloses a method, a management server and a system suitable for coal face area limitation, wherein the method comprises the following steps: acquiring positioning monitoring information; generating a real-time position information table T4 of the positioning card of the restricted area according to the positioning monitoring information; obtaining the number P of real-time positioning personnel in the limited area according to the table T4; acquiring the number H of statistical personnel sent by an infrared counting sensor; zone restriction is implemented according to P and H. According to the embodiment of the invention, the base station monitoring information is resolved and subjected to multiple logic judgment, and the personnel data is subjected to statistical analysis from different angles according to the combination mode of the judgment result and the statistical result of the infrared sensor, so that the regional limitation of the coal face is realized, the problem of the number statistical error of the existing regional limitation system is solved, and the problems of potential safety hazard caused by the implementation of the limited personnel journey and the obstruction of normal production of a roadway are solved.
Description
Technical Field
The invention relates to the technical field of coal face area limit analysis, in particular to a method, a management server and a system suitable for coal face area limit.
Background
In the coal mining process, disasters such as rock burst are often accompanied, so that the risk of accidents caused by crowd death and crowd injury is prevented and controlled from the source, the national coal mine safety supervision agency issues 'limit personnel regulations (trial) for single-shift operation under a coal mine', and the production of over-workers is avoided. It is therefore highly desirable to perform work surface area restriction in a certain manner.
Although the traditional regional personnel limitation mode mainly based on manual guard needs to invest manpower into the underground, the mode is simple, the manpower investment further increases the number of underground operation persons, the original purpose of the personnel limitation is violated, and the deviation of the manual guard is easy to generate.
The people-limiting system based on modern science and technology is roughly divided into an active person-limiting system and a passive person-limiting system, and although the problem of manpower input is effectively avoided, some unsolved problems exist.
The principle of the active personnel limiting system adopting the laser technology is that the personnel limiting door can be automatically opened when and only when a person wearing the laser emitting device passes through the personnel limiting door with the laser detector, so that a compliance person enters a personnel limiting area; the person without authority can not open the gate of the person, so that the person can not enter the person limiting area to achieve the purpose of limiting persons.
The principle of the passive type personnel limiting system adopting the underground personnel positioning technology is that two groups of positioning base stations are arranged in front of each other in a roadway, the personnel entering and exiting are judged according to the sequence of the personnel monitored by the two groups of positioning base stations, then the number of the personnel entering a personnel limiting area and wearing personnel positioning cards is counted, and personnel limiting measures are taken after the number of the personnel wearing the cards exceeds the limited number of the personnel, so that the purpose of limiting personnel is achieved.
However, both of the above two systems can achieve zone restriction under ideal conditions, but are not ideal in specific applications.
The former limit personnel implementation mainly depends on the opening and closing of a 'limit personnel door', a door of an underground roadway installation frame structure is needed, and the field construction needs professional technicians, so that the technical difficulty is high; in addition, the underground roadway is narrow, and the installation of the personnel limiting door can generate great influence on the production environment of the roadway, so that the vehicle passing and the material transportation are hindered; the main working mode of the personnel-limiting door is that the authorized passing is monitored by a single person, people cannot pass through the door quickly under the condition of numerous personnel, and when the emergency situation needing emergency evacuation is met, the personnel cannot evacuate efficiently; in addition, if the laser emitting device worn by a person or the electric control system of the personnel-limiting door breaks down, the laser detection personnel-limiting door cannot be normally opened, so that the escape passage is blocked. Obviously, the active type passenger limiting system engineering controlled by the passenger limiting door has great potential safety hazard when the normal production of the roadway is blocked.
The latter method mainly depends on the sequence of people monitored by two groups of base stations to judge the entering and exiting of people, however, when people linger or linger between the two groups of base stations, the people cannot be judged to enter or leave, the judgment is fuzzy, and the people counting deviation in the people limiting area is formed; in addition, the system mainly determines the number of people in the limited area by counting the number of the personnel locator cards in the limited area, and if the personnel do not wear the locator cards to enter the limited area, the error is caused in the number counting of the personnel in the limited area. Obviously, the method for judging the entering and exiting of the personnel according to the sequence monitored by the base station and the passive personnel limiting system which only simply counts the number of the positioning cards in the personnel limiting area and limits the personnel have statistical errors.
Disclosure of Invention
In view of the foregoing defects in the prior art, an object of the embodiments of the present invention is to provide a method, a management server, and a system suitable for coal face area limitation.
In order to achieve the above object, in a first aspect, an embodiment of the present invention provides a method for coal face area limitation, including:
acquiring positioning monitoring information;
generating a positioning card real-time monitoring information table T1 according to the positioning monitoring information;
calculating the positioning card real-time monitoring information table T1 through a position calculating service to obtain a positioning card real-time position information table T2;
generating an access judgment area locator card information cache table T3;
generating a limit person area locator card real-time position information table T4 according to the locator card real-time position information table T2 and the access judgment area locator card information cache table T3;
obtaining the number P of real-time positioning personnel in the limited area according to the real-time position information table T4 of the positioning card in the limited area;
acquiring the number H of statistical personnel sent by an infrared counting sensor;
and realizing regional limitation according to the real-time positioning personnel number P and the statistical personnel number H of the limitation region.
As an embodiment of the present application, the generating of the entry/exit determination area locator card information cache table T3 specifically includes:
setting an access judgment area judgment combination set M [ [ positioning equipment ID, access judgment area ID ] ]ina configuration file of a position calculation service;
setting the subscript of an element of the access judging area judging combination set M as i, and traversing the current positioning equipment ID of the positioning card in the area corresponding to M [ i ] [1 ];
if the current positioning equipment ID of the positioning card is equal to M [ i ] [0], adding or updating the data record item of the positioning card in the access judgment area positioning card information cache table T3;
the data entries in the access determination area locator card information cache table T3 are traversed, and the data entries in the access determination area locator card information cache table T3 that are not updated due to time-out are deleted.
As a specific implementation manner of the present application, generating a restricted area locator card real-time location information table T4 specifically includes:
deleting the data entry in the access judgment area locator card information cache table T3 in the locator card real-time location information table T2 to generate the member area locator card real-time location information table T4.
Further, the method further includes dynamically updating the access determination area locator card information cache table T3, specifically including:
s41, obtaining the latest update time of the current locator card in the access judgment area locator card information cache table T3, and calculating the time difference delta d between the latest update time of the locator card and the current time;
s42, if the time difference delta d is larger than 120 seconds, judging that the current personnel leaves the access judging area, and entering the step S44;
s43, if the time difference delta d is larger than 10 seconds and the current locator card enters the people limiting area from the access judgment area, judging that the current person leaves the access judgment area, and entering the step S44;
s44, delete the data entry of the current locator card in the access determination area locator card information cache table T3.
Further, the method further includes dynamically updating the restricted area locator card real-time location information table T4, specifically including:
s51, judging whether the current personnel enter the limited area, if yes, adding or updating the data record item of the locator card of the current personnel in the real-time locator card position information table T4 of the limited area; if not, judging whether a data record item of the personnel locator card exists in the real-time location information table T4 of the personnel locator card, if so, deleting the data record item of the locator card of the current personnel in the real-time location information table T4 of the personnel locator card, and if not, not needing operation;
and S52, judging whether the current person leaves the restricted area, if so, deleting the data record item of the locator card of the current person in the restricted area locator card real-time position information table T4.
Specifically, the step of judging whether the current person enters the person-restricted area specifically includes:
acquiring the latest generation time of the positioning card real-time position information table T2, and calculating the time difference delta T between the latest generation time and the current time;
setting a detection time period delta T of the positioning card real-time position information table T2;
if the time difference delta T is less than delta T, the data record item of the positioning card in the positioning card real-time position information table T2 is not traversed; if the delta T is larger than or equal to the delta T, traversing the data record item of the positioning card in the positioning card real-time position information table T2;
acquiring the latest updating time of the positioning card in the positioning card real-time position information table T2, and calculating the time difference deltas between the latest updating time and the current time;
if the time difference Δ s is less than 240 seconds and the locator card is not in the access determination area locator card information cache table T3, it is determined that the locator card of the person is in the restricted area.
Specifically, the step of judging whether the current person leaves the limited area specifically includes:
acquiring the latest updating time of the real-time position information table T4 of the positioning card in the limited area, and calculating the time difference delta q between the latest updating time and the current time;
if the time difference delta q is greater than 30 seconds and the current locator card is in the access judgment area locator card information cache table T3, judging that the current person leaves the restricted person area;
and if the delta q is more than 10 hours, judging that the current person leaves the passenger limiting area overtime.
Further, the area limitation is realized according to the real-time positioning personnel number P and the statistical personnel number H of the limitation area, and the method specifically comprises the following steps:
if P is H, the number R of the real-time personnel in the limited area is H;
if P ≠ H, then the number of real-time people in the restricted area R? H, simultaneously triggering an alarm program, and sending an alarm instruction without a card to the monitoring terminal and the intelligent substation;
if the real-time personnel number R of the limited area is larger than a preset limited value L, triggering an alarm program, and sending an over-personnel alarm instruction to the monitoring terminal and the intelligent substation;
and if the real-time personnel number R in the limited area is less than or equal to a preset limited value L, sending a prompt instruction of 'normal passing' to the intelligent substation.
In a second aspect, an embodiment of the present invention provides a management server, including a processor, an input device, an output device, and a memory, where the processor, the input device, the output device, and the memory are connected to each other, where the memory is used to store a computer program, and the computer program includes program instructions, and the processor is configured to call the program instructions to execute the method of the first aspect.
In a third aspect, an embodiment of the present invention provides a system suitable for a coal face area limitation, including a locator card, a locator base station, an intelligent substation, an infrared counting sensor, a management server, an underground large screen, an underground alarm, a monitoring terminal, and a portable audible and visual alarm, where the locator card is in wireless communication with the locator base station, the intelligent substation is in communication with the locator base station, the infrared counting sensor, and the management server, the management server is in communication with the underground large screen, the underground alarm, and the monitoring terminal is in wireless communication with the portable audible and visual alarm, where the management server is as described in the second aspect.
According to the embodiment of the invention, the base station monitoring information is resolved and subjected to multiple logic judgment, and the personnel data is subjected to statistical analysis from different angles according to the combination mode of the judgment result and the statistical result of the infrared sensor, so that the regional limitation of the coal face is realized, the problem of the number statistical error of the existing regional limitation system is solved, and the problems of potential safety hazard caused by the implementation of the limited personnel journey and the obstruction of normal production of a roadway are solved.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below.
FIG. 1 is a network topology diagram of a system suitable for coal face area restriction provided by an embodiment of the invention;
FIG. 2 is a schematic flow chart diagram of a method for coal face area delimitation provided by an embodiment of the present invention;
FIG. 3 is a flow chart of a method of area restriction work;
FIG. 4 is a schematic diagram of a positioning base station layout;
fig. 5 is a schematic structural diagram of a management server according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a system suitable for coal face area restriction. As shown, the system mainly comprises:
positioning a card: the system is worn by a person in the well and used for wireless communication with a positioning base station to generate ranging information;
power supply: providing power for the whole system equipment;
positioning a base station: the positioning gateway is connected with the positioning card and is responsible for carrying out wireless communication with the positioning card to generate ranging information and transmitting the ranging information to the positioning gateway;
positioning the gateway: the intelligent substation is connected with the positioning base station and is responsible for executing networking instructions sent by the intelligent substation, returning data according to transmission instructions sent by the intelligent substation, receiving positioning information sent by the positioning base station and transmitting the positioning information to the intelligent substation;
the intelligent substation: the management server is connected with the switch and the positioning gateway, receives the real-time positioning information sent by the positioning gateway, records the real-time positioning information and forwards the real-time positioning information to the management server through the switch; receiving data and instructions returned by the management server, namely displaying the data on an underground large screen for underground personnel to check, triggering an alarm and prompting the personnel to forbid entering a personnel-limiting area through the underground large screen and a loudspeaker after the intelligent substation receives the alarm instruction; after the intelligent substation receives the prompt instruction, the intelligent substation prompts personnel to pass through an underground large screen and a loudspeaker;
an infrared counting sensor: is connected with the intelligent substation; counting the number of personnel by analyzing the human body infrared image, sending personnel data entering a personnel limitation area to a management server through an intelligent substation and a switch, and assisting the management server to detect the actual number of the personnel in the personnel limitation area;
an optical fiber sensor: the conversion from the underground twisted pair network to the optical fiber network is realized;
the switch: the underground intelligent substation is communicated with an aboveground management server;
a management server: connecting the switch and the area personnel limiting system terminal; monitoring and acquiring monitoring information sent by an intelligent substation from the underground through a switch and resolving the monitoring information to generate a positioning card real-time position information table, further generating an input judgment area positioning card information cache table and a limiting area positioning card real-time position information table, obtaining area limiting data and limiting judgment results by judging the information tables and infrared statistical data, and then sending data and judgment result instructions to an area limiting system terminal and the underground intelligent substation;
regional personnel limiting system terminal: connecting with a management server; receiving data and instructions sent by a management server, displaying the data on a system terminal screen for ground personnel to check, and triggering sound-light alarm and sending alarm content to monitoring personnel after the monitoring terminal receives the alarm instruction;
large screen in pit: is connected with the intelligent substation; the method comprises the steps of receiving and displaying the information of a limit person sent by an intelligent substation on a screen, receiving and displaying alarm information sent by the intelligent substation on the screen, and broadcasting the alarm content through a loudspeaker in a voice mode;
an underground alarm: is connected with the intelligent substation; executing an alarm instruction sent by the intelligent substation for sending an alarm signal;
portable audible-visual annunciator: and the wireless receiving alarm instruction is used for sending an alarm signal to scenes such as ground offices and the like and flashing.
Based on the above system, with reference to fig. 2 and fig. 3, the method for limiting the coal face area provided by the embodiment of the present invention has the following processes:
s101, the management server acquires positioning monitoring information.
Specifically, a "limit area" is first defined on the mining work plan, and a limit value L is set. And then adopt the underground positioning technology, deploy regional limit personnel equipment and system, include: the system comprises a positioning card, a positioning base station, a positioning gateway, an intelligent substation, a power supply, an infrared counting sensor, an alarm, an underground large screen, an optical fiber converter, a switch, a management server and an area limit system terminal.
Further, an "access decision area" is defined at the entrance of the "restroom", wherein the "access decision area" must be covered by the positioning gateway signal at the entrance of the restroom. And the positioning gateway sends the received positioning monitoring information to the intelligent substation, and the intelligent substation sends the positioning monitoring information to the management server through the switch.
The underground positioning technology specifically comprises the following steps:
the method comprises the following steps: setting topological network lines of roadway paths according to a mine excavation engineering plan to form a topological network diagram;
step two: setting a coordinate position for installing a positioning base station on a topological network diagram of a roadway path;
step three: according to the coverage range of wireless signals of the positioning base stations, setting a reasonable positioning base station combination which can be matched with each other for positioning calculation;
step four: establishing a wireless information transmission and distance measurement network by using an ultra-wideband wireless communication technology, and detecting the distance between a positioning card and a positioning base station to form a positioning card ranging information packet;
step five: and the coordinate value of the positioning card is calculated through a positioning card ranging information packet, the coordinate position of the positioning base station, a reasonable positioning base station combination and a topological network diagram of a roadway path.
The layout of the topological network lines is similar to the conducting wires of a roadway, namely the lines are positioned in the middle of the roadway as much as possible; the intersection point of the topological network lines is a space coordinate point, and an elevation value is configured to form a space line network, namely, the elevation value z can be configured besides a plane coordinate value (x, y).
The reasonable positioning base station combination consists of two positioning base stations, and the following conditions are required to be met simultaneously:
(1) the paths of the two positioning base stations are communicated, and the communicated paths simultaneously meet the sight line intercommunication;
(2) the two positioning base stations are within the respective optimal ranging ranges of each other.
And marking the positioning base station into the topological network diagram according to the actual field installation condition. The positions of the positioning base stations in the topological network diagram do not need to be measured accurately, and the coordinate positions are close. The road section of the positioning card needing accurate positioning requires the communication of the paths between the adjacent positioning base stations, the communication of the visual lines is simultaneously satisfied on the communicated paths, and the adjacent positioning base stations are in the respective optimal ranging range (the optimal ranging range is determined according to the factory index of the ranging chip adopted by the positioning base station) to form a reasonable positioning base station combination. The reasonable positioning base station combination is a preset positioning base station set which can be mutually combined to carry out positioning card position calculation and consists of two positioning base stations. If the positioning base station of a certain positioning card is detected not to belong to the same reasonable positioning base station combination, the positioning card position can not be solved in a mutually matched mode. Selection of reasonable positioning base station combination as shown in fig. 4, a total of A, B, C, D, E, F positioning base stations are installed at an intersection, wherein the reasonable base station combination is the set (a, B), (a, F), (C, F) and (C, D). If the positioning card P is located at the intersection of the roadway paths and is simultaneously detected by the positioning base stations A, B, C, E and F, the actual situation is that the sight lines of the positioning card P and the positioning base station C are not communicated, and radio signals have refraction and diffraction phenomena, so that the distance measurement from P to C is not accurate; the paths between the positioning card P and the positioning base station E are not communicated, so that a blocking phenomenon exists, radio signals are easy to be unstable, and the distance measurement from P to E is not accurate; although the positioning card P can be monitored by the positioning base station B, the distance measurement error from P to B becomes large because the positioning card P is not within the optimal distance measurement range of B; therefore, two positioning base stations with communicated paths and communicated sight lines are set as a reasonable positioning base station combination, and the two positioning base stations are required to be in respective optimal ranging ranges, namely, the positioning base station sets (A, B), (A, F), (C, F) and (C, D) are the reasonable positioning base station combination. The positioning algorithm provided by the invention can select a reasonable positioning base station set (A, F) from the positioning base station sets (A, B, C, E, F) to calculate the position P point of the positioning card, namely, the positioning base stations A and F are selected from all reasonable positioning base station combinations (A, B), (A, F), (C, F) and sets (C, D) to be the optimal reasonable positioning base station combination of the positioning card P, so that the position calculation accuracy of the positioning card is greatly improved.
The positioning card ranging information packet is a ranging information unit from a single positioning card to a plurality of positioning base stations, and the elements of the ranging information packet comprise a positioning card number, a base station number, a distance from the positioning base station and the ranging value credibility of the positioning base station. Assuming that the locator card c is detected by n base stations at the same time, the locator card ranging information packet mainly includes [ locator card number c, 1 base station number, distance from 1 base station, 1 base station ranging value reliability … n base station number, distance from n base station, n base station ranging value reliability ].
The method for resolving the space coordinate value of the positioning card is named as a space-sphere-line intersection positioning method (SLPP-ASR for short) on a near-straight-line path, and specifically comprises the following steps of taking a positioning base station as a sphere center, taking the distance from the positioning base station to the positioning card as a radius to form a space sphere, forming an intersection set by an external spherical surface of the space sphere and a topological network line, dividing into three conditions according to the number of the positioning base stations which detect the positioning card at the same time to resolve the coordinate value of the positioning card, and if no solution or the resolving fails, failing to resolve the coordinate value of the positioning card:
(1) the locator card is detected by 1 location base station: when the spherical surface of the space sphere and the topological network line have no intersection point, the coordinate position of the positioning base station is a coordinate value of the positioning card; when the number of intersection points of the spherical surface of the space sphere and the topological network line is 1, the position of the intersection point is a coordinate value of the locator card; when the number of intersection points of the spherical surface of the space sphere and the topological network line is more than 1, obtaining a set JA of the intersection points, if the positioning card is successfully positioned by the two positioning base stations, forming a positioning card inertia trend vector V0 by the coordinate points of the two positioning base stations, if the positioning card inertia trend vector V0 is not formed, determining the position of the positioning base station as a positioning card coordinate value, otherwise, sequentially extracting the points in the set JA, calculating a vector V1 formed by the points and the positioning base stations, forming a point set SD by the points of which the orientation amounts V0 and V1 tend to be parallel, and determining the point closest to the positioning card coordinate value positioned by the two positioning base stations in the point set SD as a positioning card coordinate value;
(2) the locator card is detected by two location base stations: the positioning card is detected by a positioning base station A and a positioning base station B, and if the pairing combination formed by the positioning base stations A and B does not accord with the preset reasonable positioning base station combination, no solution is available; if the pairing combination formed by the positioning base stations A and B conforms to the preset reasonable positioning base station combination, the distance from the positioning base station A to the positioning card is the intersection point of the spherical surface of the space sphere S1 formed by the radius and the topological network line to form a point set SA, the distance from the positioning base station B to the positioning card is the intersection point of the spherical surface of the space sphere S2 formed by the radius and the topological network line to form a point set SB, and if one of the set SA or SB is empty, no solution exists; otherwise, forming a space line segment set SAB from the point of the set SA to the point of the set SB, if the distance from the locator card to the locating base station A is Lca, the distance from the locator card to the locating base station B is Lcb, and the distance Lab between the locating base stations A and B, if (Lab-Lca-Lcb) > -0.001, namely when the space spheres S1 and S2 are separated or tangent, the midpoint of the shortest line segment in the space line segment set SAB is the coordinate value of the locator card; otherwise, when the space spheres S1 and S2 intersect, if the midpoint of all the line segments in the line segment set SAB, which are parallel to the line segment AB formed by the two positioning base stations, forms the selectable solution point set SR, the point with the shortest distance to the positioning base stations a and B is the coordinate value of the positioning card, otherwise, the position is determined as a solution-free position;
(3) the locator card is detected by more than two location base stations: every two positioning base stations are paired to form a pairing set PAB, and if no combination in the set PAB is a preset reasonable positioning base station combination, the position of the positioning base station closest to the positioning card is a coordinate value of the positioning card; otherwise, extracting a set MPAB in the middle of the paired positioning base stations from the combined set PAB according to whether the positioning card is in the middle of the paired positioning base stations, and solving by the method of the condition (2) until any paired base station in the set MPAB is successfully solved; if the solution is failed, the position of the positioning base station closest to the positioning card is the coordinate value of the positioning card.
S102, the management server generates a locator card real-time monitoring information table T1 according to the positioning monitoring information, and the table T1 is resolved by the position resolving service to generate a locator card real-time position information table T2.
The locator card real-time location information table T2 is generated and maintained by a "location calculation service", and reference may be made to the foregoing description for the location calculation service, which is not described herein again.
S103, the management server creates an entry/exit determination area locator card information cache table T3 and stores it in the cache table.
Specifically, the generation process of table T3 is as follows:
(1) setting an access judgment area judgment combination set M in a configuration file of a position calculation service, wherein each element in the combination set consists of a positioning equipment ID and an access judgment area ID, namely M [ [ positioning equipment ID, access judgment area ID ] ];
(2) setting the subscript of the element of M as i, and traversing the current positioning equipment ID of the positioning card in the corresponding area of M [ i ] [1 ];
(3) if the current positioning equipment ID of the positioning card is equal to M [ i ] [0], adding or updating the data record item of the positioning card in the table T3; if not, no operation is needed;
(4) by traversing the data entries in table T3, the data entries in table T3 that have not been updated by the timeout are deleted.
S104, the management server generates a limit person area locator card real-time position information table T4 according to the locator card real-time position information table T2 and the access judgment area locator card information cache table T3.
Specifically, the generation process of table T4 is as follows: the locator card data entry in table T3 is deleted from the resolved table T2 to generate table T4.
And S105, the management server obtains the number P of the real-time positioning personnel of the limited area according to the real-time position information table T4 of the positioning card of the limited area.
Specifically, the number P of real-time positioning persons in the limited area can be known according to the positioning card data entry in the table T4.
And S106, the management server acquires the number H of the statistical personnel sent by the infrared counting sensor.
As described above, the infrared counting sensor analyzes the human body infrared image to obtain the number H of the statistical personnel, and the number H of the statistical personnel is transmitted to the management server through the intelligent substation and the switch.
And S107, the management server positions the number P of the persons in real time according to the restricted area and counts the number H of the persons to limit the area.
Specifically, step S7 specifically includes:
if P is H, the number R of the real-time personnel in the limited area is H;
if P ≠ H, then the number of real-time people in the restricted area R? H, simultaneously triggering an alarm program, and sending an alarm instruction without a card to the monitoring terminal and the intelligent substation by the management server to prompt a person without the card to enter a limit area; the method can effectively reduce the condition that people counting in the limited area is inaccurate after the conditions of card loss, card leakage and card non-wearing are generated.
If the real-time personnel number R of the limited area is larger than L, an alarm program is triggered, and the management server sends an over-personnel alarm instruction to the monitoring terminal and the intelligent substation;
and if the real-time personnel number R in the limited area is less than or equal to L, the management server sends a prompt instruction of 'normal passing' to the intelligent substation.
Furthermore, after the alarm program of the regional personnel limiting system is started, the adopted alarm prompt types include but are not limited to voice broadcast, buzzing and flashing of an audible and visual alarm, high-brightness and flashing of large-screen alarm information monitored underground and on the well, pushing of a short message early warning mobile phone and the like.
Further, the method for limiting the coal face area further includes dynamically updating the access determination area locator card information cache table T3, and specifically includes:
s41, obtaining the latest update time of the current locator card in the access judgment area locator card information cache table T3, and calculating the time difference delta d between the latest update time of the locator card and the current time;
s42, if the time difference Δ d is greater than 120 seconds, determining that the current person leaves the access determination area (i.e. the person holding the card leaves the access determination area in fig. 3), and proceeding to step S44;
s43, if the time difference delta d is larger than 10 seconds and the current locator card enters the people limiting area from the access judgment area, judging that the current person leaves the access judgment area, and entering the step S44;
s44, delete the data entry of the current locator card in the access determination area locator card information cache table T3.
Further, the method for limiting the coal face area further includes dynamically updating the real-time position information table T4 of the limiting area locator card, and specifically includes:
s51, judging whether the current personnel enter the limited area, if yes, adding or updating the data record item of the locator card of the current personnel in the real-time locator card position information table T4 of the limited area; if not, judging whether a data record item of the personnel locator card exists in the real-time location information table T4 of the personnel locator card, if so, deleting the data record item of the locator card of the current personnel in the real-time location information table T4 of the personnel locator card, and if not, not needing operation;
and S52, judging whether the current person leaves the restricted area, if so, deleting the data record item of the locator card of the current person in the restricted area locator card real-time position information table T4.
Wherein, whether judging present personnel and entering into the limit personnel district specifically includes:
acquiring the latest generation time of the positioning card real-time position information table T2, and calculating the time difference delta T between the latest generation time and the current time;
setting a detection time period delta T of the positioning card real-time position information table T2;
if the time difference delta T is less than delta T, the data record item of the positioning card in the positioning card real-time position information table T2 is not traversed; if the delta T is larger than or equal to the delta T, traversing the data record item of the positioning card in the positioning card real-time position information table T2;
acquiring the latest updating time of the positioning card in the positioning card real-time position information table T2, and calculating the time difference deltas between the latest updating time and the current time;
if the time difference Δ s is less than 240 seconds and the locator card is not in the access determination area locator card information cache table T3, it is determined that the locator card of the person is in the restricted area.
Wherein, judging whether current personnel leave the limited personnel district specifically includes:
acquiring the latest updating time of the real-time position information table T4 of the positioning card in the limited area, and calculating the time difference delta q between the latest updating time and the current time;
if the time difference Δ q is greater than 30 seconds and the current locator card is in the access determination area locator card information cache table T3, determining that the current person leaves the restricted area (i.e., the card holder leaves the restricted area in fig. 3);
and if the delta q is more than 10 hours, judging that the current person leaves the passenger limiting area overtime.
It should be noted that, in conjunction with the flowchart in fig. 3, those skilled in the art should understand that since the location monitoring information is changing continuously, therefore: (1) after the table T3 is generated, real-time dynamic update is required, and the specific update process is as described above; (2) table T3 is subtracted from table T2 to obtain table T4, and after table T4 is generated, table T2 needs to perform real-time dynamic update, and table T4 itself also performs real-time dynamic update, where a specific update process is as described above; (3) in calculating the real-time location personnel data P of the restricted area, the latest table T4 is used.
Note that, in the determination conditions of fig. 3, no operation is required unless otherwise specified. For example, it is determined whether the current locator ID of the locator card is equal to M [ i ] [0], if so, the locator card data entry in table T3 is added or updated, and if not, no operation is required; and judging whether the delta d is more than 10 seconds, if so, entering the personnel limiting area from the access judging area by the positioning card, and if not, not needing to operate.
As can be seen from the above description, the method for limiting persons in a coal face area provided in the embodiment of the present invention combines a positioning base station and an area in a mutual matching manner according to a specific rule, and then, with the assistance of an infrared counting sensor, performs calculation and multiple logic judgment on monitoring information of the base station, and performs statistical analysis on personnel data from different angles according to a combination manner of a judgment result and a statistical result of the infrared sensor, thereby realizing limiting persons in the coal face area, solving the problem of error in counting the number of people in the existing area limiting system, and simultaneously solving the problems of potential safety hazards and blocking normal production of a roadway due to implementation of limiting personnel processes.
Further, the system suitable for limiting the number of people in the coal face area, provided by the embodiment of the invention, overcomes the problem of people counting error of the existing system, is realized without a door structure, thoroughly solves the problems of potential safety hazard and obstruction of normal production of a roadway of the existing system caused by the implementation of the limit engineering, and belongs to a practical area limit method and system for mass-making and light-weight deployment of mine enterprises and minimum interference to the production environment of the mining face.
Based on the same inventive concept, the embodiment of the invention provides a management server. As shown in fig. 3, the generating means may include: one or more processors 101, one or more input devices 102, one or more output devices 103, and memory 104, the processors 101, input devices 102, output devices 103, and memory 104 being interconnected via a bus 105. The memory 104 is used for storing a computer program comprising program instructions, the processor 101 being configured for invoking the program instructions for performing the methods of the above-described method embodiment parts.
It should be understood that, in the embodiment of the present invention, the processor 101 may be a Central Processing Unit (CPU).
The input device 102 may include a keyboard or the like, and the output device 103 may include a display (LCD or the like), a speaker, or the like.
The memory 104 may include read-only memory and random access memory, and provides instructions and data to the processor 101. A portion of the memory 104 may also include non-volatile random access memory. For example, the memory 104 may also store device type information.
In a specific implementation, the processor 101, the input device 102, and the output device 103 described in the embodiment of the present invention may execute the implementation manner described in the embodiment of the method for limiting a coal face area provided in the embodiment of the present invention, and details are not described here again.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A method for coal face area restraint, comprising:
acquiring positioning monitoring information;
generating a positioning card real-time monitoring information table T1 according to the positioning monitoring information;
calculating the positioning card real-time monitoring information table T1 through a position calculating service to obtain a positioning card real-time position information table T2;
generating an access judgment area locator card information cache table T3;
generating a limit person area locator card real-time position information table T4 according to the locator card real-time position information table T2 and the access judgment area locator card information cache table T3;
obtaining the number P of real-time positioning personnel in the limited area according to the real-time position information table T4 of the positioning card in the limited area;
acquiring the number H of statistical personnel sent by an infrared counting sensor;
and realizing regional limitation according to the real-time positioning personnel number P and the statistical personnel number H of the limitation region.
2. The method of claim 1, wherein the step of generating the access decision zone locator card information cache table T3 specifically comprises:
setting an access judgment area judgment combination set M [ [ positioning equipment ID, access judgment area ID ] ]ina configuration file of a position calculation service;
setting the subscript of an element of the access judging area judging combination set M as i, and traversing the current positioning equipment ID of the positioning card in the area corresponding to M [ i ] [1 ];
if the current positioning equipment ID of the positioning card is equal to M [ i ] [0], adding or updating the data record item of the positioning card in the access judgment area positioning card information cache table T3;
the data entries in the access determination area locator card information cache table T3 are traversed, and the data entries in the access determination area locator card information cache table T3 that are not updated due to time-out are deleted.
3. The method of claim 1, wherein generating the restricted area locator card real-time location information table T4 specifically comprises:
deleting the data entry in the access judgment area locator card information cache table T3 in the locator card real-time location information table T2 to generate the member area locator card real-time location information table T4.
4. The method of claim 1, further comprising dynamically updating said access decision zone locator card information cache table T3, including:
s41, obtaining the latest update time of the current locator card in the access judgment area locator card information cache table T3, and calculating the time difference delta d between the latest update time of the locator card and the current time;
s42, if the time difference delta d is larger than 120 seconds, judging that the current personnel leaves the access judging area, and entering the step S44;
s43, if the time difference delta d is larger than 10 seconds and the current locator card enters the people limiting area from the access judgment area, judging that the current person leaves the access judgment area, and entering the step S44;
s44, delete the data entry of the current locator card in the access determination area locator card information cache table T3.
5. The method according to claim 1, wherein the method further comprises dynamically updating the restricted area locator card real-time location information table T4, specifically comprising:
s51, judging whether the current personnel enter the limited area, if yes, adding or updating the data record item of the locator card of the current personnel in the real-time locator card position information table T4 of the limited area; if not, judging whether a data record item of the personnel locator card exists in the real-time location information table T4 of the personnel locator card, if so, deleting the data record item of the locator card of the current personnel in the real-time location information table T4 of the personnel locator card, and if not, not needing operation;
and S52, judging whether the current person leaves the restricted area, if so, deleting the data record item of the locator card of the current person in the restricted area locator card real-time position information table T4.
6. The method of claim 5, wherein the determining whether the current person enters the restricted area specifically comprises:
acquiring the latest generation time of the positioning card real-time position information table T2, and calculating the time difference delta T between the latest generation time and the current time;
setting a detection time period delta T of the positioning card real-time position information table T2;
if the time difference delta T is less than delta T, the data record item of the positioning card in the positioning card real-time position information table T2 is not traversed; if the delta T is larger than or equal to the delta T, traversing the data record item of the positioning card in the positioning card real-time position information table T2;
acquiring the latest updating time of the positioning card in the positioning card real-time position information table T2, and calculating the time difference deltas between the latest updating time and the current time;
if the time difference Δ s is less than 240 seconds and the locator card is not in the access determination area locator card information cache table T3, it is determined that the locator card of the person is in the restricted area.
7. The method of claim 5, wherein determining whether the current person leaves the restricted area comprises:
acquiring the latest updating time of the real-time position information table T4 of the positioning card in the limited area, and calculating the time difference delta q between the latest updating time and the current time;
if the time difference delta q is greater than 30 seconds and the current locator card is in the access judgment area locator card information cache table T3, judging that the current person leaves the restricted person area;
and if the delta q is more than 10 hours, judging that the current person leaves the passenger limiting area overtime.
8. The method according to any one of claims 1 to 7, wherein the area limitation is realized according to the real-time positioning personnel number P and the statistical personnel number H of the limitation area, and specifically comprises the following steps:
if P is H, the number R of the real-time personnel in the limited area is H;
if P ≠ H, then the number of real-time people in the restricted area R? H, simultaneously triggering an alarm program, and sending an alarm instruction without a card to the monitoring terminal and the intelligent substation;
if the real-time personnel number R of the limited area is larger than a preset limited value L, triggering an alarm program, and sending an over-personnel alarm instruction to the monitoring terminal and the intelligent substation;
and if the real-time personnel number R in the limited area is less than or equal to a preset limited value L, sending a prompt instruction of 'normal passing' to the intelligent substation.
9. A management server comprising a processor, an input device, an output device and a memory, the processor, the input device, the output device and the memory being interconnected, wherein the memory is configured to store a computer program comprising program instructions, the processor being configured to invoke the program instructions to perform the method of claim 8.
10. A system suitable for a coal face area limiter comprises a positioning card, a positioning base station, an intelligent substation, an infrared counting sensor, a management server, an underground large screen, an underground alarm, a monitoring terminal and a portable audible and visual alarm, wherein the positioning card is in wireless communication with the positioning base station, the intelligent substation is in communication with the positioning base station, the infrared counting sensor and the management server respectively, the management server is in communication with the underground large screen, the underground alarm and the monitoring terminal respectively, and the monitoring terminal is in wireless communication with the portable audible and visual alarm, and the management server is as claimed in claim 9.
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