Electronic access control method and system based on mining electro-hydraulic control system

Abstract

The invention provides an electronic access control method and system based on a mining electro-hydraulic control system, and belongs to the technical field of electronic access control. The problem that an existing underground electronic access control system is low in recognition rate is solved. The technical scheme for solving the technical problem is as follows: based on an electro-hydraulic control system, a controller, a multifunctional signal lamp, a computer personnel management and analysis platform, a positioning identification card and an Ethernet which are matched with the system are adopted to provide an electronic access control method, and accurate positioning of the positioning card can be realized through two UWB base stations in front of and behind a door; the electronic access control lock realizes acquisition of personnel position information, can effectively prevent personnel misjudgment, accurately judges the state of personnel entering and exiting a door, counts the identity and number of personnel entering and exiting the door, and finally realizes automatic control and access control data management of the electronic access control lock; the method is applied to underground electronic access control.

Description

Technical Field

[0001] The invention provides an electronic access control method and system based on a mine electric-hydraulic control system, belonging to the technical field of electronic access control. Background Art

[0002] Coal mines are divided into comprehensive mining faces, heading faces, transportation faces, etc., and the underground environment is complicated and the personnel structure is complex. It is difficult to accurately manage the work area, which will inevitably cause some production safety accidents. With the intelligent transformation of coal mines in recent years, in order to better manage the personnel in each area and prevent non-regional staff from breaking in, more and more electronic access control systems are applied to mines. At present, most mines use intelligent electronic access control systems including face recognition, fingerprint unlocking, password unlocking, card unlocking, UWB technology, etc. For the existing coal mine application environment, the access control system has the following 4 shortcomings;

[0003] 1. The functions are relatively traditional and single, requiring personnel to perform effective feature recognition and contact operations;

[0004] 2. The working environment in coal mines is harsh, and faces and fingers can easily cause blurred recognition features, which will cause the access control system to be unable to perform effective recognition;

[0005] 3. Card swipe and password are easy to lose or forget;

[0006] 4. UWB signals are easily blocked, which can easily lead to misjudgment of personnel, and the cost of deploying UWB systems is relatively high;

[0007] 5. It is difficult to save and display electronic access control management data, and rebuilding the management system is relatively time-consuming, labor-intensive and costly. Summary of the invention

[0008] In order to solve the above technical problems, the present invention proposes an electronic access control method and system based on a mine electro-hydraulic control system. The purpose is to provide an electronic access control method based on the electro-hydraulic control system, using a system-matching controller, a multi-function signal light, a computer personnel management and analysis platform, a positioning identification card, and an Ethernet network. It overcomes the defects of the current electronic access control in coal mines, realizes the collection of personnel location information, can effectively prevent personnel misjudgment, accurately judge the status of personnel entering and leaving the door, count the identity and number of people entering and leaving the door, and finally realize the automatic control of electronic access control locks and access control data management.

[0009] The technical solution adopted by the present invention is: an electronic access control method based on a mine electro-hydraulic control system, comprising the following steps:

[0010] Step 1: Install multifunctional signal lights with built-in UWB base stations on the front and back of the door where the electronic access control lock is installed to obtain the location information of the identification card. The multifunctional signal lights are connected to the controller of the electro-hydraulic control system, and the controller uploads the location information of the identification card to the PC.

[0011] Step 2: The PC switches the corresponding mode of the personnel door entry and exit judgment algorithm according to the online status of the uploaded multi-function signal light to judge the door entry and exit status of the person carrying the identification card. The modes include single-light mode and dual-light mode. Under normal circumstances, the dual-light mode is used by default to judge the door entry and exit status of the person. The judgment rules of the dual-light mode are as follows:

[0012] Assuming that the staff with identification card x has not entered the door, calculate the distance a1 between the identification card x and the signal light in front of the door, and the distance b1 between the identification card x and the signal light behind the door. Using the distances a1, b1 and the fixed installation distance c between the two multifunctional signal lights in front and behind the door, obtain the angle α1 between a1 and b1. After the staff with identification card x enters the door, calculate the distance a2 between the identification card x and the signal light in front of the door, and the distance b2 between the identification card x and the signal light behind the door. Combined with the fixed installation distance c, obtain the angle α2 between a2 and b2.

[0013] When a person enters the UWB recognition area with an identification card, the following entry conditions are determined based on the location information:

[0014] 1) If α1<90°, the person is on the side of the signal light in front of the door and is far away from the door;

[0015] 2) If α1 is closer to 90°, the person is closer to the door and is about to cross the door;

[0016] 3) If α2>90°, the person is close to the signal light behind the door and is in the state of stepping into the door;

[0017] 4) If α2<90°, and the smaller α2 is, the farther the person is from the signal light behind the door, it is considered to be far away from the door.

[0018] 5) The PC side counts the change in the angle from the signal light α1 in front of the door to the signal light α2 behind the door to determine whether someone has entered the door:

[0019] When α completes the changes from α1 less than 90°→α1 close to 90°→α2 greater than 90°→α2 less than 90°, it is considered that the staff member has completed the door entry state change. In the door crossing state, the electronic access control lock is remotely opened;

[0020] 6) The PC side counts the change in the angle between the signal light α2 behind the door and the signal light α1 in front of the door to identify whether a person has left the door:

[0021] When α completes the changes from α2 less than 90°→α2 close to 90°→α1 greater than 90°→α1 less than 90°, it is considered that the staff member has completed the exit state change. In the cross-door state, the electronic access control lock is remotely opened;

[0022] When one of the multi-function signal lights is abnormal and only one multi-function signal light is online, the single-light mode is used to realize the door entry and exit judgment, and the door entry and exit status of the person is judged by the distance between the identification card and the multi-function signal light;

[0023] Step 3: The PC end records and manages the identity of each person and the status and number of people entering and leaving the door through the judgment results in the dual-light mode or single-light mode;

[0024] Step 4: The PC will project the identity of each person, the status of entering and leaving the door, and the number of people on the LED display screen, and display the working status of the electronic access control lock in real time.

[0025] Further, the single light mode includes a single front door multifunctional signal light mode and a single rear door multifunctional signal light mode. In the single light mode, the distance between the identification card and the front door signal light is d1, the distance between the identification card and the rear door signal light is d2, the threshold for the front door signal light to judge the door in and out is n, the tolerance for the front door signal light to judge the door in and out is ε1, the threshold for the rear door signal light to judge the door in and out is m, and the tolerance for the rear door signal light to judge the door in and out is ε2;

[0026] The judgment basis of the single front door multi-function signal light mode is:

[0027] 1) If d1>>n, it is recorded as the state of personnel away from the door;

[0028] 2) If d1 is close to n+ε1, it is in the state of crossing the gate;

[0029] 3) If d1 goes from n+ε1 to n and then to n+ε1, it is in the cross-gate state;

[0030] 4) If d1>>n, it is in the state of being away from the door;

[0031] The judgment basis of the single rear door multi-function signal light mode is:

[0032] 1) If d2>>m, record it as the person is away from the door;

[0033] 2) If d2 is close to m+ε2, it is in the state of crossing the gate;

[0034] 3) If d2 goes from m+ε2 to m, and then to m+ε2, it is in the cross-gate state;

[0035] 4) If d2>>m, it is in the state of being far away from the door;

[0036] 5) PC side counts the changes of d to identify the person entering the door:

[0037] The PC database does not find the last entry record of the person. If d completes the above four status changes, it is considered that the staff member has completed the entry status change. When in the cross-door state, the electronic access control lock is remotely opened; if d only completes the first two status changes, it is considered that the entry operation has not been completed and he is just staying in front of the door;

[0038] 6) The PC side counts the changes in d to identify whether a person has left the house:

[0039] If the PC database does not find the last entry record of the person, and d completes the above four state changes, it is considered abnormal data. If it is found that the person has the last entry record, and d completes the above four state changes, it is considered to be going out. In the cross-door state, the electronic access control lock is remotely opened; when there is an entry record, d only completes the first two state changes above, it is considered that the exit operation has not been completed and the person is just staying behind the door.

[0040] Furthermore, in dual-light mode, personnel entering the door are subject to abnormal judgment processing, and the basis is as follows:

[0041] If only the first two states, i.e., changes from α1 less than 90° to α1 close to 90°, are detected, it is considered that the person has not entered the door but is just staying in front of the door; if only the last two states, i.e., changes from α2 less than 90° to α2 greater than 90°, are detected, and the database does not find a record of the person entering the door and not leaving the door last time, it is considered to be abnormal data; if a record of the person entering the door and not leaving the door last time is found, and only the last two states, i.e., changes from α2 less than 90° to α2 greater than 90°, are detected, it is considered that the person is staying behind the door and is still in the state of entering the door.

[0042] Furthermore, in dual-light mode, when a person leaves the house, an abnormal judgment is made based on the following:

[0043] If only the first two states, i.e., changes from α2 less than 90° to α2 close to 90°, are detected, it is considered that the person has not gone out but is just staying behind the door; if only the last two states, i.e., changes from α1 less than 90° to α1 greater than 90°, are detected, and the database does not find a record of the person entering the door and not going out last time, it is considered to be abnormal data; if a record of the person entering the door and not going out last time is found, and only the last two states, i.e., changes from α1 less than 90° to α1 greater than 90°, are detected, it is considered that the person has gone out.

[0044] Furthermore, the switching between different modes is achieved by detecting the online status of the multifunctional signal light.

[0045] An electronic access control system based on a mine electro-hydraulic control system, comprising:

[0046] Multifunctional signal light: installed in front and behind the underground door, with built-in UWB base station, used to obtain the location information of the identification card carried by the staff and measure the distance between the two;

[0047] Identification card: used to locate personnel;

[0048] Controller: It uses an electro-hydraulic control system controller to collect the location information of the personnel identification card identified by the multi-function signal light, and report the location information of the personnel identification card to the PC end, which can configure and control the switch of the electronic access lock;

[0049] Electronic access locks;

[0050] PC terminal: The PC terminal is embedded with an electronic access control management platform, in which a computer program of the electronic access control method is pre-written to judge the status of people entering and leaving the door;

[0051] The electronic access control management platform can issue whitelist door opening permissions to the controller, and obtain the position change information of the identification card relative to the multi-function signal lights in front and behind the door through the personnel location information uploaded by the controller;

[0052] LED display screen: used to display the electronic access control status, number of people entering and leaving the door, and employee information.

[0053] Furthermore, the controller is provided with a sound alarm module for prompting illegal intrusion.

[0054] Furthermore, the multifunctional signal light prompts the current judgment mode of the electronic access control lock by using different signal lights.

[0055] Furthermore, at least one multifunctional signal light is provided at the front and rear of the door respectively.

[0056] Furthermore, the controller performs self-identification of the installation position of the multifunctional signal light through an addressing method.

[0057] The beneficial effects of the present invention compared to the prior art are as follows: the access control method and system based on the mine electro-hydraulic control system provided by the present invention can effectively reduce the equipment deployment cost, well meet the current use environment of electronic access control in coal mines, efficiently realize the location information, door entry and exit status, identity and number of management personnel, and can accurately and automatically control the electronic switch access lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] The present invention will be further described below in conjunction with the accompanying drawings:

[0059] Figure 1 A schematic diagram of a system structure for implementing the method of the present invention;

[0060] Figure 2A schematic diagram of the controller identifying the installation position of the signal light in the method of the present invention;

[0061] Figure 3 This is a schematic diagram of the algorithm for judging whether a person enters or leaves a door on the PC side. DETAILED DESCRIPTION

[0062] like Figures 1 to 3 As shown, the present invention provides an electronic access control method and system based on a mine electro-hydraulic control system, which adopts an existing mine electro-hydraulic control system. The hardware equipment involved in the system includes a PC, a controller, a multi-function signal light 1, a multi-function signal light 2, an identification card, an electronic access control lock and an LED display screen.

[0063] The PC end is an electronic access control management platform, which is responsible for processing the location information uploaded by the controller using the personnel entry and exit judgment algorithm of the present invention, realizing the judgment and statistics of personnel entry and exit, having the function of remotely controlling the electronic access control lock switch, temporarily authorizing personnel to pass, having the function of issuing whitelist door opening authority to the controller, having the function of controlling the LED display screen to display the number of personnel entering and exiting the door and the status of the electronic access control lock in real time, and at the same time, the electronic access control management platform also saves all the personnel information entering and exiting the door, realizing the all-weather management of the access control system. The PC end obtains the position change information of the identification card relative to the two multifunctional signal lights through the personnel location information uploaded by the controller, and uses the personnel entry and exit judgment algorithm of the present invention to identify the current front and rear positions of the identification card at the door, which can accurately count the status and number of personnel entering and exiting the door, and prevent personnel misjudgment.

[0064] The controller is an electro-hydraulic control system controller, which is responsible for collecting the location information of multi-function signal light 1, multi-function signal light 2 and identification card through the 485 serial port, and actively uploading the location information to the electronic access control management platform on the PC side for processing using the Ethernet network of the electro-hydraulic control system. The controller will also control the switch of the electronic access control lock and the sound alarm prompts for illegal intruders according to the issued white list permissions. The controller realizes self-identification of the installation position of the two multi-function signal lights through the addressing method, and modifies the switch duration and logic through parameter configuration to adapt to different electronic access control locks on the market.

[0065] The logic of the controller controlling the electronic access lock is as follows:

[0066] 1. The controller can configure whether the parameters are associated with the whitelist authorization. If so, the controller can determine the switch status of the electronic access lock based on the list authority information;

[0067] 2. When there is illegal intrusion, the controller can sound an alarm and notify the indicator light of the multi-function signal lamp to alarm, which serves as an audible and visual alarm prompt;

[0068] 3. The controller can be configured with parameters to match the electronic access lock to achieve effective logical control of the electronic access lock.

[0069] The two multifunctional signal lights are supporting equipment for the controller. They act as the base station of the identification card, are responsible for UWB distance measurement with the identification card, and also have light alarm prompts.

[0070] The identification card is a supporting device for the electro-hydraulic control system and is used as a symbol for personnel identification.

[0071] The LED display screen is a display terminal device used to broadcast the electronic access control status, the number of people entering and leaving the door, and the information of employees.

[0072] The electronic access lock is a control terminal that receives the switching electrical signal output by the controller to automatically open and close the door.

[0073] The process of the controller self-identifying the installation positions of the two multi-function signal lights through the addressing method is as follows:

[0074] The two modifiable parameters added inside the controller are:

[0075] 1. Multi-function signal light 1 position: the first signal light role connected to the controller;

[0076] 2. Multi-function signal light 2 position: The second signal light role connected to the controller.

[0077] Configuration range (1-2), 1 means installed in front of the door, set to the front door signal light role, referred to as the front door signal light, 2 means installed behind the door, set to the back door signal light role, referred to as the back door signal light, the controller is connected in series with two levels of multi-function signal lights, such as Figure 2 As shown, follow the arrow direction to cascade, controller to multi-function signal light 1, multi-function signal light 1 to multi-function signal light 2, the installation position of the two multi-function signal lights shall be subject to the actual location on site. After installation, Figure 3 As shown, the controller can easily identify that the two multifunctional signal lights are installed in front of and behind the door by modifying the signal light position number, and assign roles to the two multifunctional signal lights to set the relative position coordinate system of the door and the two multifunctional signal lights.

[0078] Based on the connection of the above hardware devices, the implementation steps of the electronic access control method of the present invention are as follows:

[0079] Step 1: The PC side switches to single front door signal light mode, single rear door signal light mode or dual light mode according to the online status of the uploaded multi-function signal light. In different modes, the multi-function signal light will use different signal light prompts to facilitate viewing the current mode and prompt the operator. Under normal circumstances, the default is dual light mode. The dual light mode is based on the distance calculation of the two multi-function signal lights, which can more accurately obtain the location of personnel and avoid misjudgment of door entry and exit statistics. At the same time, when the dual light mode fails, this switching of single and dual light modes can ensure that the control of the electronic access control system can be used normally even if one multi-function signal light is damaged. Even if the multi-function signal lights before and after the door are damaged, resulting in the inability to obtain location information, the PC side can also directly remotely control the electronic access control lock to a fixed normally open or normally closed state (configurable) to play an emergency braking role. The PC side also promptly controls the LED display screen to broadcast the fault condition, promptly reminding the staff to replace the equipment, thereby increasing the robustness of the system.

[0080] Step 2: When the staff with identification card x has not entered the door, the distance a1 between the identification card x and the signal light in front of the door, and the distance b1 between the identification card x and the signal light behind the door can be calculated through the UWB technology of the electro-hydraulic control system. The angle α1 between a1 and b1 is calculated by using the distances a1, b1 and the fixed installation distance c between the two multi-function signal lights in front and behind the door through the following formula (cosine theorem). After the staff with identification card x enters the door, the distance a2 between the identification card x and the signal light in front of the door, and the distance b2 between the identification card x and the signal light behind the door can be calculated through the UWB technology of the electro-hydraulic control system. Combined with the fixed installation distance c, the angle α2 between a2 and b2 is calculated.

[0081] Configurable parameters for single door mode: 1. The threshold n for judging the door entry and exit by the door signal light; 2. The door entry and exit tolerance ε1 of the door signal light (configured according to the actual deployment on site):

[0082] The configurable parameters of the single-door mode are: 1. The threshold m for judging the door entry and exit by the signal light behind the door; 2. The door entry and exit tolerance ε2 of the signal light behind the door (configured according to the actual deployment on site).

[0083]

[0084] The specific logic of door entry and exit judgment is as follows:

[0085] When a person enters the UWB recognition area, the following entry conditions can be determined based on the location information:

[0086] 1. Under normal circumstances, both multi-function signal lights are online, that is, the dual-light mode is used to judge the door in and out, and the judgment basis is:

[0087] 1) If α1<90°, the person is on the side of the signal light in front of the door and is far away from the door;

[0088] 2) If α1 is closer to 90°, the person is closer to the door and is about to cross the door;

[0089] 3) If α2>90°, the person is close to the signal light behind the door and is in the state of stepping into the door;

[0090] 4) If α2<90°, and the smaller α2 is, the farther the person is from the signal light behind the door, it is considered to be far away from the door.

[0091] 5) The PC side counts the change in the angle from the signal light α1 in front of the door to the signal light α2 behind the door to determine whether someone has entered the door:

[0092] Less than 90°→close to 90°→greater than 90°→less than 90°, α completes these four angle changes (1→4), and it is considered that the staff member has completed the door entry state change. When in the door crossing state, the electronic access control lock is remotely opened; the door entry algorithm has abnormal judgment processing. If only the first two states (1→2) are detected, it is considered that the person has not entered the door, but just stayed in front of the door; if only the last two states (4→3) are detected, and the database does not find the record of the person entering the door and not leaving the door last time, it is considered to be abnormal data. If the record of the person entering the door and not leaving the door last time is found, and only the last two states (4→3) are detected, it is considered that the person is staying behind the door and is still in the door entry state;

[0093] 6) The PC side counts the change in the angle between the signal light α2 behind the door and the signal light α1 in front of the door to identify whether a person has left the door:

[0094] Less than 90°→close to 90°→greater than 90°→less than 90°, α completes these four angle changes (4→1), and it is considered that the staff member has completed the change of the exit state. When in the cross-door state, the electronic access control lock is remotely opened; the exit algorithm has abnormal judgment processing. If only the first two states (4→3) are detected, it is considered that the person has not left the door, but just stayed behind the door; if only the last two states (1→2) are detected, and the database does not find the record of the person entering the door and not leaving the door last time, it is considered to be abnormal data. If the record of the person entering the door and not leaving the door last time is found, and only the last two states (1→2) are detected, it is considered that the person has left the door.

[0095] 2. In the case of abnormal signal lights, only one multi-function signal light is online, that is, the single-light mode is used to realize the door entry and exit judgment. Assume that the distance between the identification card and the multi-function signal light 1 is d1, and the distance between the identification card and the multi-function signal light 2 is d2. The judgment basis is:

[0096] Judgment basis of single front door multi-function signal light mode:

[0097] 1) If d1>>n, it is recorded as the state of personnel away from the door;

[0098] 2) If d1 is close to n+ε1, it is in the state of crossing the gate;

[0099] 3) If d1 goes from n+ε1 to n and then to n+ε1, it is in the cross-gate state;

[0100] 4) If d1>>n, it is in the state of being away from the door;

[0101] Judgment basis of single rear door multi-function signal light mode:

[0102] 1) If d2>>m, record it as the person is away from the door;

[0103] 2) If d2 is close to m+ε2, it is in the state of crossing the gate;

[0104] 3) If d2 goes from m+ε2 to m, and then to m+ε2, it is in the cross-gate state;

[0105] 4) If d2>>m, it is in the state of being far away from the door;

[0106] 5) PC side counts the changes in d to identify people entering the door:

[0107] The PC database does not find the last entry record of the person. If d completes the above four state changes (1→4), it is considered that the staff member has completed the entry state change. When in the cross-door state, the electronic access control lock is remotely opened; if d only completes the above first two state changes (1→2), it is considered that the entry operation has not been completed and he is just staying in front of the door;

[0108] 6) PC side counts the changes in d to identify whether a person has left the house:

[0109] If the PC database does not find the last entry record of the person, and d completes the above four state changes (1→4), it is considered abnormal data. If the last entry record of the person is found, and d completes the above four state changes (1→4), it is considered to be going out. In the cross-door state, the electronic access control lock is remotely opened; when there is an entry record, d only completes the first two state changes above, and it is considered that the exit operation has not been completed, and the person is just staying behind the door.

[0110] Step 3: The electronic access control management platform on the PC uses the above algorithm to record and manage the identity of each person and the status and number of people entering and leaving the door;

[0111] Step 4: The PC will project the identity of each person, the status of entering and leaving the door, and the number of people on the LED display screen, and display the working status of the electronic access control lock in real time.

[0112] Due to obstruction, the multi-function signal lights in front and behind the door cannot effectively measure the distance with the identification card and obtain the distances a and b. In this case, the PC uses multiple sampling in a time period to obtain effective value judgment, increase data exception processing, and abnormal data is not used as a basis for judging the door entry and exit.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electronic access control method based on a mine electro-hydraulic control system, characterized in that: The following steps are involved: Step 1: Install multifunctional signal lights with built-in UWB base stations on the front and back of the door where the electronic access control lock is installed to obtain the location information of the identification card. The multifunctional signal lights are connected to the controller of the electro-hydraulic control system, and the controller uploads the location information of the identification card to the PC. Step 2: The PC switches the corresponding mode of the personnel door entry and exit judgment algorithm according to the online status of the uploaded multi-function signal light to judge the door entry and exit status of the person carrying the identification card. The modes include single-light mode and dual-light mode. Under normal circumstances, the dual-light mode is used by default to judge the door entry and exit status of the person. The judgment rules of the dual-light mode are as follows: Assume that when the staff with identification card x has not entered the door, calculate the distance a1 between the identification card x and the signal light in front of the door, and the distance b1 between the identification card x and the signal light behind the door. Use the distances a1, b1, and the fixed installation distance c between the two signal lights in front and behind the door to obtain the angle α1 between a1 and b1. After the staff with identification card x enters the door, calculate the distance a2 between the identification card x and the signal light in front of the door, and the distance b2 between the identification card x and the signal light behind the door. Combined with the fixed installation distance c, obtain the angle α2 between a2 and b2. When a person enters the UWB recognition area with an identification card, the following entry conditions are determined based on the location information: 1) If α1<90°, the person is on the side of the signal light in front of the door and is far away from the door; 2) If α1 is closer to 90°, the person is closer to the door and is about to cross the door; 3) If α2>90°, the person is close to the signal light behind the door and is in the state of stepping into the door; 4) If α2<90°, and the smaller α2 is, the farther away the person is from the signal light behind the door, it is considered to be far away from the door; 5) The PC side counts the change in the angle between the signal light α1 in front of the door and the signal light α2 behind the door to determine whether someone has entered the door: When α completes the changes from α1 less than 90°→α1 close to 90°→α2 greater than 90°→α2 less than 90°, it is considered that the staff member has completed the door entry state change. In the door crossing state, the electronic access control lock is remotely opened; 6) The PC side counts the change in the angle between the signal light α2 behind the door and the signal light α1 in front of the door to identify whether a person has left the door: When α completes the changes from α2 less than 90°→α2 close to 90°→α1 greater than 90°→α1 less than 90°, it is considered that the staff member has completed the exit state change. In the cross-door state, the electronic access control lock is remotely opened; When one of the multi-function signal lights is abnormal and only one multi-function signal light is online, the single-light mode is used to realize the door entry and exit judgment, and the door entry and exit status of the person is judged by the distance between the identification card and the multi-function signal light; Step 3: The PC end records and manages the identity of each person and the status and number of people entering and leaving the door through the judgment results in the dual-light mode or single-light mode; Step 4: The PC will project the identity of each person, the status of entering and leaving the door, and the number of people on the LED display screen, and display the working status of the electronic access control lock in real time.

2. The electronic access control method based on the mine electro-hydraulic control system according to claim 1 is characterized in that: The single-light mode includes a single front-door multifunctional signal light mode and a single rear-door multifunctional signal light mode. In the single-light mode, the distance between the identification card and the front-door signal light is d1, the distance between the identification card and the rear-door signal light is d2, the threshold for the front-door signal light to judge the door in and out is n, the tolerance for the front-door signal light to judge the door in and out is ε1, the threshold for the rear-door signal light to judge the door in and out is m, and the tolerance for the rear-door signal light to judge the door in and out is ε2; The judgment basis of the single front door multi-function signal light mode is: 1) If d1>>n, it is recorded as the person is away from the door; 2) If d1 is close to n+ε1, it is in the state of crossing the gate; 3) If d1 goes from n+ε1 to n and then to n+ε1, it is in the cross-gate state; 4) If d1>>n, it is in the state of being away from the door; The judgment basis of the single rear door multi-function signal light mode is: 1) If d2>>m, record it as the person is away from the door; 2) If d2 is close to m+ε2, it is in the state of crossing the gate; 3) If d2 goes from m+ε2 to m, and then to m+ε2, it is in the cross-gate state; 4) If d2>>m, it is in the state of being away from the door; 5) PC side counts the changes of d to identify the person entering the door: The PC database does not find the last entry record of the person. If d completes the above four status changes, it is considered that the staff member has completed the entry status change. When in the cross-door state, the electronic access control lock is remotely opened; if d only completes the first two status changes, it is considered that the entry operation has not been completed and he is just staying in front of the door; 6) PC side counts the changes of d to identify whether a person has left the house: If the PC database does not find the last entry record of the person, and d completes the above four state changes, it is considered abnormal data. If it is found that the person has the last entry record, and d completes the above four state changes, it is considered to be going out. In the cross-door state, the electronic access control lock is remotely opened; when there is an entry record, d only completes the first two state changes above, it is considered that the exit operation has not been completed and the person is just staying behind the door.

3. The electronic access control method based on the mine electro-hydraulic control system according to claim 1 is characterized in that: In dual-light mode, there is abnormal judgment and processing when a person enters the door, and the basis is as follows: If only the first two states, i.e., changes from α1 less than 90° to α1 close to 90°, are detected, it is considered that the person has not entered the door but is just staying in front of the door; if only the last two states, i.e., changes from α2 less than 90° to α2 greater than 90°, are detected, and the database does not find a record of the person entering the door and not leaving the door last time, it is considered to be abnormal data; if a record of the person entering the door and not leaving the door last time is found, and only the last two states, i.e., changes from α2 less than 90° to α2 greater than 90°, are detected, it is considered that the person is staying behind the door and is still in the state of entering the door.

4. The electronic access control method based on the mine electro-hydraulic control system according to claim 1 is characterized in that: In dual-light mode, when a person leaves the house, there is an exception judgment and processing, and the basis is as follows: If only the first two states, i.e., changes from α2 less than 90° to α2 close to 90°, are detected, it is considered that the person has not gone out but is just staying behind the door; if only the last two states, i.e., changes from α1 less than 90° to α1 greater than 90°, are detected, and the database does not find a record of the person entering the door and not going out last time, it is considered to be abnormal data; if a record of the person entering the door and not going out last time is found, and only the last two states, i.e., changes from α1 less than 90° to α1 greater than 90°, are detected, it is considered that the person has gone out.

5. The electronic access control method based on the mine electro-hydraulic control system according to any one of claims 1 to 4, characterized in that: The switching of different modes is achieved by detecting the online status of the multifunctional signal light.

6. An electronic access control system based on a mine electro-hydraulic control system, characterized in that: include: Multifunctional signal light: installed in front and behind the underground door, with built-in UWB base station, used to obtain the location information of the identification card carried by the staff and measure the distance between the two; Identification card: used to locate personnel; Controller: It uses an electro-hydraulic control system controller to collect the location information of the personnel identification card identified by the multi-function signal light, and report the location information of the personnel identification card to the PC end, which can configure and control the switch of the electronic access lock; Electronic access locks; PC terminal: the PC terminal is embedded with an electronic access control management platform, in which a computer program of the electronic access control method according to any one of claims 1 to 5 is pre-written to judge the status of personnel entering and leaving the door; The electronic access control management platform can issue whitelist door opening permissions to the controller, and obtain the position change information of the identification card relative to the multi-function signal lights in front and behind the door through the personnel location information uploaded by the controller; LED display screen: used to display the electronic access control status, number of people entering and leaving the door, and employee information.

7. The electronic access control system based on the mine electric-hydraulic control system according to claim 6 is characterized by: The controller is provided with a sound alarm module for prompting illegal intrusion.

8. The electronic access control system based on the mine electric-hydraulic control system according to claim 7 is characterized by: The multifunctional signal light uses different signal lights to indicate the current judgment mode of the electronic access control lock.

9. The electronic access control system based on the mine electro-hydraulic control system according to claim 6 is characterized by: At least one multifunctional signal lamp is respectively arranged at the front and rear of the door.

10. The electronic access control system based on the mine electric-hydraulic control system according to claim 6 is characterized by: The controller self-identifies the installation location of the multi-function signal light through the addressing method.

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