UWB wireless positioning security check door

Abstract

The invention discloses a UWB wireless positioning security check door, which comprises a security check door main body, an attendance check door base station, a biological information acquisition module, a switch module and a gate machine, and is characterized in that the attendance check door base station is composed of a plurality of mainboards and a positioning module; the positioning module, the biological information acquisition module, the switch module and the gate are all connected with the main board, the positioning module is used for acquiring UWB-RSSI data of identification cards carried by personnel, the biological information acquisition module is used for acquiring personnel biological information, the main board is used for processing the acquired data and performing uniqueness comparison, the switch module is used for data interaction, and the gate is connected with the main board. And the gate controls personnel to pass according to the comparison result of the main board. Compared with a traditional exciter attendance checking scheme, the UWB wireless positioning security check door has the advantages that the detection accuracy is extremely high and reaches 99%; through combination of the UWB-RSSI positioning technology and biological information dual verification, personnel identities can be accurately identified, cheating behaviors such as multi-card sharing and card punching by others are effectively avoided, and reliable guarantee is provided for attendance management of mine personnel.

Description

Technical Field

[0001] This invention belongs to the technical field of cross-integration of UWB wireless positioning, security inspection equipment and mine personnel attendance management, and specifically relates to a UWB wireless positioning security gate. Background Technology

[0002] Ultra Wideband (UWB) is a wireless carrier communication technology that uses nanosecond-level non-sinusoidal narrow pulses to transmit data. By transmitting extremely low-power signals over a wide frequency spectrum, UWB can achieve data transmission rates of hundreds of Mbit / s to several Gbit / s within a range of about 10 meters. UWB has very low transmit power; communication equipment can achieve communication with less than 1mW of transmit power. This low transmit power significantly extends the system's operating time. UWB has strong anti-interference capabilities. It uses time-hopping spread spectrum signals, resulting in a large processing gain. During transmission, it disperses weak radio pulse signals across a wide frequency band, with output power even lower than the noise generated by ordinary equipment. During reception, it recovers the signal energy, generating spreading gain during despreading. UWB has an extremely wide bandwidth, exceeding 1 GHz and reaching several GHz. Ultra-wideband systems have large capacities and can operate simultaneously with narrowband communication systems without interference.

[0003] In the field of personnel attendance management and safety inspection in mines, existing technical solutions have certain limitations. With industry development, the requirements for personnel uniqueness detection are becoming increasingly stringent, and traditional solutions are no longer sufficient to meet practical needs. Currently common actuator-based attendance solutions and UWB-TOF / TDOA / PDOA / AOA solutions have many shortcomings. The following is a comparison of the problems of these two solutions and the solutions proposed in this invention: Currently, commonly used attendance systems using actuators can only detect the presence of identification cards, failing to verify the uniqueness of personnel. This makes them prone to cheating behaviors such as multiple cards being used together and proxy attendance. Furthermore, their detection range is limited and signal coverage is uneven, potentially leading to some personnel being missed. Our solution employs UWB-RSSI positioning technology combined with biometric data collection to achieve dual verification of personnel uniqueness. By strategically deploying the antenna matrix, we expand the detection range and ensure uniform signal coverage.

[0004] UWB-TOF / TDOA / PDOA / AOA solutions are significantly affected by multipath effects, and their positioning accuracy drops significantly in densely populated or obstructed environments. Furthermore, their high system complexity and cost hinder large-scale deployment. This paper addresses multipath effects by utilizing the UWB-RSSI algorithm, which can distinguish multipath paths with short pulses and reduces fluctuations through energy integration. A multi-module integrated design further reduces system complexity and cost.

[0005] The industry's requirements for personnel uniqueness verification are becoming increasingly stringent, and traditional solutions are no longer adequate for the new safety management needs. This invention aims to address the shortcomings of existing technologies by providing a high-precision, highly reliable, and cost-effective security inspection solution to meet the evolving needs of mine personnel attendance management and security inspection. Summary of the Invention

[0006] To address the problems raised in the background technology described above, the purpose of this invention is to provide a UWB wireless positioning security gate. UWB wireless positioning technology, with its high precision and high anti-interference characteristics, provides reliable technical support for personnel positioning; security inspection equipment is the basic hardware for ensuring safety checks; and the attendance management of mine personnel is crucial for the efficient and orderly operation of mines. In this comprehensive field, the core technology of this invention focuses on wireless signal detection, which can accurately capture and analyze relevant signals, while simultaneously achieving deep integration of biometric information and positioning data, thereby providing a more scientific and accurate solution for mine personnel attendance and safety management.

[0007] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows: A UWB wireless positioning security gate includes a security gate body, an attendance gate base station, a biometric information acquisition module, a switch module, and a turnstile. The attendance gate base station is composed of multiple motherboards and positioning modules. The positioning module, biometric data acquisition module, switch module, and gate are all connected to the motherboard. The positioning module is used to collect UWB-RSSI data of the identification card carried by the personnel. The biometric data acquisition module is used to collect the personnel's biometric information. The motherboard is used to process the collected data and perform uniqueness comparison. The switch module is used for data interaction. The gate controls the passage of personnel based on the comparison result of the motherboard.

[0008] Further specifying, the motherboard includes multiple radio frequency modules, each radio frequency module is externally connected to a set of antennas, the antennas are set on the main body of the security gate, the multiple antennas form an antenna matrix, the antenna matrix is ​​divided into multiple areas to expand the detection range and ensure uniform signal coverage.

[0009] Further specifying, the security gate body is equipped with either an iris scanner or a facial recognition camera, and the biometric information collection module is communicatively connected to the iris scanner or facial recognition camera to collect facial information of personnel.

[0010] Furthermore, the motherboard and the positioning module are connected via a bus for data transmission.

[0011] Furthermore, the switch module interacts with the bioinformatics acquisition module via a network to transmit the data acquired by the bioinformatics acquisition module to the motherboard.

[0012] Further, it also includes a grating module, which includes multiple grating sensors. These multiple grating sensors are respectively located at the front, back, and middle of the main body of the security gate, and are used to trigger biometric information acquisition and UWB-RSSI data acquisition.

[0013] Further, it also includes an audible and visual alarm, which is connected to the motherboard. When an abnormal situation occurs, such as multiple cards, no card being carried, or the identification card having low power, the motherboard controls the audible and visual alarm to sound an alarm.

[0014] Further, it also includes a voice broadcast module and a warning light module. The warning light module includes a warning light strip. A solid green light on the warning light strip indicates that the security gate is working normally and that passage is permitted when no one is inside or when someone is inside and has passed the detection. A solid yellow light on the warning light strip indicates that someone is inside the security gate and a uniqueness detection is being performed. A solid red light indicates an abnormal detection. An abnormal detection indicates that the infrared detection shows multiple people, biometric identification has failed, or the uniqueness detection is abnormal. When the infrared detector detects multiple people inside the door, biometric recognition fails, or a stranger is detected, or the uniqueness detection is abnormal, the warning light bar turns red and flashes, and the built-in speaker of the voice broadcast module broadcasts the abnormality. The identification card has a power reporting function. When the power of the identification card is less than 3.7V, the main board controls the voice broadcast module to broadcast a voice message, the light strip to issue a warning, and controls the gate to lock.

[0015] Furthermore, the motherboard uses the UWB-RSSI algorithm to process the data collected by the positioning module.

[0016] Further, it also includes a relay, which is connected to the main board. The main board controls the gate through the relay output and realizes the opening and closing actions of the gate through two level changes.

[0017] The beneficial effects of this invention are: Compared to traditional attendance systems using actuators, the UWB wireless positioning security gate of this invention boasts an extremely high detection accuracy rate of 99%. By combining UWB-RSSI positioning technology with dual biometric verification, it can accurately identify personnel, effectively preventing cheating behaviors such as sharing multiple cards and proxy clocking, thus providing reliable protection for attendance management in mines.

[0018] This invention has the ability to make a rapid judgment in 1 second. When personnel pass through the security gate, it can quickly collect biometric information and UWB-RSSI data, perform comparative analysis, and quickly give the detection results, which greatly improves the efficiency of personnel passage and meets the needs of rapid passage of large numbers of personnel in mines.

[0019] This invention uses a unified identification card to achieve universal card usage. Personnel only need to carry one identification card to use in different security gates and attendance scenarios, which is convenient and quick, reducing management costs and personnel burden; and it can reuse the identification card terminals currently in use in the mine, without the need to purchase additional equipment.

[0020] It is also equipped with an audible and visual alarm device, which can promptly issue an alarm when abnormal situations such as multiple cards, no card being carried, or low battery of the identification card occur, reminding staff to take action and enhancing the timeliness and effectiveness of safety management. The identification card has a power reporting function, and the system can detect the power of the identification card in real time. When the power is below 3.7V, it will issue a voice broadcast and light bar warning, lock the gate, and mark the location of the low-power card for timely handling, ensuring the safety of underground operations.

[0021] This invention is applicable to various scenarios, such as wellhead attendance, multi-channel parallel detection, low-power card interception, human body obstruction anti-interference, and direct gate control. It has strong versatility and adaptability and can meet the actual needs of different mines. Attached Figure Description

[0022] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings; Figure 1 This is a schematic diagram of the structure of an embodiment of a UWB wireless positioning security gate according to the present invention; Figure 2 This is a schematic diagram of the isometric structure of an embodiment of a UWB wireless positioning security gate according to the present invention; Figure 3 This is a flowchart illustrating the architecture of an embodiment of a UWB wireless positioning security gate according to the present invention. Figure 4 This is a diagram of the mainboard module of an embodiment of a UWB wireless positioning security gate according to the present invention; Figure 5 This is a voice configuration diagram of an embodiment of a UWB wireless positioning security gate according to the present invention; Figure 6 This is a flowchart illustrating the steps of an embodiment of a UWB wireless positioning security gate according to the present invention; Figure 7 This is a flowchart illustrating the detection process of an embodiment of a UWB wireless positioning security gate according to the present invention. Figure 8 This is a system module connection diagram of an embodiment of a UWB wireless positioning security gate according to the present invention; The symbols of the main components are explained as follows: Security gate body 1, sound and light alarm 11, warning light strip 12, antenna 13, grating sensor 14, iris scanner 15, positioning module 101, biometric information acquisition module 102, motherboard 103, switch module 104, turnstile 105. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0025] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0026] like Figure 1 and Figure 2 As shown, a UWB wireless positioning security gate of the present invention includes a security gate body 1, an attendance gate base station, a biometric information acquisition module 102, a switch module 104, and a gate 105. The attendance gate base station is composed of multiple motherboards 103 and positioning modules 101. The security gate body 1 has a total of four interfaces (power interface, network cable interface, fiber optic interface, and signal interface). The power interface is used for mains power access, the network cable interface is used for network data transmission, the fiber optic interface is used for fiber optic data transmission, and the signal interface is used for relay signal transmission. The security gate body 1 is made of cold-rolled steel, with dimensions of 1m×1m×2m and a weight of ≤100KG. The positioning module 101, biometric information acquisition module 102, switch module 104, and gate 105 are all connected to the motherboard 103. The positioning module 101 is used to collect UWB-RSSI data of the identification card carried by the personnel. The biometric information acquisition module 102 is used to collect the personnel's biometric information. The motherboard 103 is used to process the collected data and perform uniqueness comparison. The switch module 104 is used for data interaction. The gate 105 controls the passage of personnel according to the comparison result of the motherboard 103.

[0027] In the practical application of this embodiment, the motherboard 103 includes multiple radio frequency modules, each radio frequency module is externally connected to a set of antennas 13, the antennas 13 are disposed on the security gate body 1, the multiple antennas 13 form an antenna matrix, the antenna matrix is ​​divided into multiple areas to expand the detection range and ensure uniform signal coverage.

[0028] like Figure 2 As shown, the mainboard 103 is connected to 12 positioning modules 101. Four positioning modules 101 form a group, and there are three groups in total. The four positioning modules 101 in each group are distinguished by a code number. Each group of four positioning modules 101 shares a 485 bus. Each security gate body 1 is equipped with two mainboards 103, with a total of 24 radio frequency modules. Each module is connected to an external antenna 13. like Figure 3 As shown, this solution uses an STM32F151 motherboard and a DW1000 RF module. After personnel enter the main body 1 of the security gate, the antenna 13 of the RF module reads the RSSI information of the positioning tags inside and outside the gate within the signal coverage area, and transmits the data to the motherboard 103 through the 485 bus. After being aggregated and processed by the motherboard 103, the data is uploaded to the server.

[0029] In the practical application of this embodiment, the security gate body 1 is equipped with either an iris scanner 15 or a face recognition camera. The biometric information collection module 102 is communicatively connected to the iris scanner 15 or the face recognition camera to collect facial information of personnel.

[0030] In the practical application of this embodiment, the motherboard 103 and the positioning module 101 are connected via a 485 bus to realize data transmission.

[0031] In the practical application of this embodiment, the switch module 104 interacts with the bioinformation acquisition module 102 via the network to transmit the data acquired by the bioinformation acquisition module 102 to the motherboard 103.

[0032] The switch module 104 typically has three 100Mbps optical ports and five 100Mbps electrical ports. Through the switch module, data from the face recognition camera or iris scanner, attendance gate base station, and voice broadcast module can be exchanged with the upper-level server. In this system, the security gate body 1 generally uses five 100Mbps electrical ports.

[0033] In the practical application of this embodiment, a grating module is also included. The grating module includes multiple grating sensors 14, which are respectively located at the front, back and middle of the security gate body 1, and are used to trigger biometric information acquisition and UWB-RSSI data acquisition.

[0034] In the practical application of this embodiment, an audible and visual alarm 11 is also included. The audible and visual alarm 11 is connected to the motherboard 103. When an abnormal situation occurs, such as multiple cards, no card, or low battery of the identification card, the motherboard 103 controls the audible and visual alarm 11 to sound an alarm.

[0035] In practical applications of this embodiment, a voice broadcast module and a warning light module are also included. The warning light module includes a warning light strip 12. A solid green light on the warning light strip 12 indicates that the security gate body 1 is working normally and that passage is permitted when no one is inside the gate or when someone is inside and has passed through the detection. A solid yellow light on the warning light strip 12 indicates that someone is inside the security gate body 1 and a uniqueness detection is being performed. A solid red light indicates a detection anomaly. An anomaly indicates that the infrared detection shows multiple people, biometric identification has failed, or the uniqueness detection is abnormal. The alarm content can be configured through the upper-level software. Other alarm types and settings are summarized as follows: Figure 4 As shown.

[0036] When the infrared detector detects multiple people inside the door, biometric recognition fails, or a stranger is detected, or the uniqueness detection is abnormal, the warning light strip 12 turns red and flashes, and the built-in speaker of the voice broadcast module broadcasts an abnormality. Among them, the uniqueness detection indicates that a person is carrying multiple cards, not carrying a card, carrying the wrong card, or a card with low battery. The identification card has a power reporting function. When the power of the identification card is less than 3.7V, the main board 103 controls the voice broadcast module to broadcast a voice message, the light strip to issue a warning, and controls the gate 105 to lock.

[0037] In the practical application of this embodiment, the motherboard 103 uses the UWB-RSSI algorithm to process the data collected by the positioning module 101.

[0038] In practical applications of this embodiment, a relay is also included. The relay is connected to the main board 103. The main board 103 controls the gate 105 through the relay output and realizes the opening and closing actions of the gate 105 through two level changes.

[0039] The working principle and functions of this solution are as follows: 1. Unique identification of person and card: Determine whether the identification card is inside the door by using location data, compare the information of the identification card inside the door with the information of the collected face, and compare the two parts of information; The specific logic is as follows: Each attendance base station has 12 radio frequency modules coded from 0 to 11, and the antennas 13 of these 12 radio frequency modules are positioned on the product. The space inside and around the door is divided into four areas: in front of the door, behind the door, inside the door, and outside the door by 24 antennas. When personnel enter the door wearing identification cards, all positioning data received by the security gate body 1 from the moment of entry to the two seconds prior to the entry point is collected while biometric information is being collected. It is stipulated that if more than 50% of the data within the two seconds is from inside the door, the identification card is actually located inside the door. Assuming the collected biometric information is converted into personnel identification information A based on the entered information, and the access card is converted into personnel identification information B based on the entered information, if information A and information B match, then the identification card worn by the person is considered to be their own identification card. Based on the comparison of information A and information B, the following situations exist: If A=B and there are no other identification cards / people inside the door, the uniqueness test passes. If A≠B and there are no other identification cards / people inside the door, it is determined that the wrong card was brought; if A=B and there are other identification cards inside the door, it is determined that one person is carrying multiple cards; if A=B or A≠B and there are other people inside the door, it is determined that there are multiple people inside the door; if there is A but no B, it is determined that the positioning card was not carried. When there are multiple people inside the door: The optical grating module is used to detect whether there are multiple people inside the door. There are three sets of infrared emitters: front, inside, and back. In a complete door passage process, the three sets of optical grating modules should complete a signal on / off cycle in sequence. Based on the on / off status of the three sets of optical grating modules, the following judgments can be made: If the three sets of optical grating modules should complete a signal on / off cycle in sequence: then the person inside the door is considered normal. If the signal on / off cycle is completed at the front of the door, and then the signal inside the door is disconnected, and the signal at the front of the door is disconnected again: then there are multiple people inside the door. (The main structure of the security gate is designed so that only one person is allowed to be detected inside the door at a time).

[0040] 2. Direct Control of the Turnstile: The attendance gate base station directly controls the turnstile 105 via a relay output. From the data link perspective, after the attendance system determines that the underlying logic meets the opening requirements, it sends an opening command to the attendance gate base station. The attendance gate base station then changes the level of its output twice to open and close the turnstile 105. 3. Low battery alarm function: The identification card has its own power reporting function. When the system analyzes that the power of the identification card inside the door is <3.7V, the system issues a broadcast command to warn that the identification card is in a low battery state.

[0041] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A UWB wireless positioning security gate, characterized in that: It includes a security gate body (1), an attendance gate base station, a biometric information collection module (102), a switch module (104), and a turnstile (105). The attendance gate base station is composed of multiple motherboards (103) and a positioning module (101). The positioning module (101), bio-information acquisition module (102), switch module (104), and gate (105) are all connected to the motherboard (103). The positioning module (101) is used to collect UWB-RSSI data of the identification card carried by the personnel. The bio-information acquisition module (102) is used to collect the personnel's bio-information. The motherboard (103) is used to process the collected data and perform uniqueness comparison. The switch module (104) is used for data interaction. The gate (105) controls the passage of personnel according to the comparison result of the motherboard (103).

2. The UWB wireless positioning security gate according to claim 1, characterized in that: The motherboard (103) includes multiple radio frequency modules, each of which is connected to a set of antennas (13). The antennas (13) are set on the main body (1) of the security gate. The multiple antennas (13) form an antenna matrix, which is divided into multiple areas to expand the detection range and ensure uniform signal coverage.

3. The UWB wireless positioning security gate according to claim 1, characterized in that: The security gate body (1) is equipped with either an iris scanner (15) or a face recognition camera. The biometric information collection module (102) is communicatively connected to the iris scanner (15) or the face recognition camera to collect facial information of personnel.

4. The UWB wireless positioning security gate according to claim 1, characterized in that: The motherboard (103) and the positioning module (101) are connected via a 485 bus for data transmission.

5. A UWB wireless positioning security gate according to claim 1, characterized in that: The switch module (104) interacts with the bioinformatics acquisition module (102) via a network to transmit the data acquired by the bioinformatics acquisition module (102) to the motherboard (103).

6. A UWB wireless positioning security gate according to claim 1, characterized in that: It also includes a grating module, which includes multiple grating sensors (14), which are respectively located in front of, behind and in the middle of the security gate body (1) to trigger biometric information collection and UWB-RSSI data collection.

7. A UWB wireless positioning security gate according to claim 1, characterized in that: It also includes an audible and visual alarm (11), which is connected to the motherboard (103). When an abnormal situation occurs, such as multiple cards, no card, or low battery of the identification card, the motherboard (103) controls the audible and visual alarm (11) to sound an alarm.

8. A UWB wireless positioning security gate according to claim 1, characterized in that: It also includes a voice broadcast module and a warning light module. The warning light module includes a warning light strip (12). A green light on the warning light strip (12) indicates that the main body (1) of the security gate is working normally and that it is safe to pass through when there is no one inside the gate or when there is someone inside the gate and the detection has passed. A yellow light on the warning light strip (12) indicates that there is someone inside the main body (1) of the security gate and a uniqueness detection is being performed. A red light on the warning light indicates an abnormality in the detection. An abnormality in the detection indicates that the infrared detection shows that there are multiple people, the biometric information recognition has failed, or the uniqueness detection is abnormal. When the infrared detector detects multiple people inside the door, or when biometric identification fails, or when a stranger is detected, or when the uniqueness detection is abnormal, the warning light strip (12) turns red and flashes, and the built-in speaker of the voice broadcast module broadcasts the abnormality. The identification card has a power reporting function. When the power of the identification card is <3.7V, the main board (103) controls the voice broadcast module to broadcast the voice, the light strip to issue a warning, and controls the gate (105) to lock.

9. A UWB wireless positioning security gate according to claim 1, characterized in that: The motherboard (103) uses the UWB-RSSI algorithm to process the data collected by the positioning module (101).

10. A UWB wireless positioning security gate according to claim 1, characterized in that: It also includes a relay, which is connected to the main board (103). The main board (103) controls the gate (105) through the relay output and realizes the opening and closing actions of the gate (105) through two level changes.

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