Integrated security check gate PLC control system

Abstract

The invention relates to the technical field of security check equipment, in particular to an integrated security check gate PLC control system which comprises a first security check door and a second security check door, and each security check door integrates a plurality of functional modules. All the modules are dispatched and controlled to be opened and closed in a unified mode through the PLC, the first security check door and the second security check door work cooperatively, and intelligent switching of boarding security check modes is achieved. Compared with an existing security check system, the system is high in integration level, modules work cooperatively, multiple boarding security check modes are switched intelligently, maintenance is convenient, and the passing efficiency and the humanized service level are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of security inspection equipment, and more particularly, to an integrated security inspection gate PLC control system. Background Art

[0002] In the field of public safety, security gates serve as core equipment for crowd control and security inspections. Their performance directly affects the safety and traffic efficiency of transportation hubs, large venues, and other places. Traditional security gate systems generally have the following core pain points, which restrict their application effectiveness in complex scenarios:

[0003] 1. Insufficient system integration

[0004] Early security inspection equipment employed a decentralized architecture, with independent deployment of functional modules such as security inspection, identity recognition, gate control, and alarm display. This resulted in bulky systems and complex wiring. Modules communicated via non-standardized protocols, resulting in high data exchange latency and low collaboration efficiency.

[0005] 2. Rigid Scenario Adaptability

[0006] Existing systems lack real-time perception and intelligent response capabilities for dynamic scenarios. When passenger flow fluctuates, security checkpoints cannot automatically adjust, often leading to channel congestion due to untimely manual intervention. In emergencies, the system cannot quickly switch to emergency mode, and emergency evacuation instructions are delayed, potentially delaying escape time. For special groups (such as people with disabilities and children), traditional gates lack differentiated service mechanisms, resulting in a poor access experience and difficulty meeting humane service requirements.

[0007] 3. The system is not maintainable

[0008] Traditional security gates mostly adopt a single-device, single-module design; at the same time, when the smart device needs to be upgraded, it must be shut down to achieve it, which limits the equipment maintenance to non-operating hours.

[0009] To address the above problems, it is necessary to develop a security gate control system that is highly integrated, can intelligently adapt to multiple scenarios, and has strong maintainability. Summary of the Invention

[0010] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide an integrated security gate PLC control system.

[0011] To achieve the above object, the present invention provides the following technical solutions:

[0012] The integrated security gate PLC control system includes a first security gate and a second security gate. The first security gate includes a sensor module, a security detection module, an identity recognition module, a central control module, a communication module, a display and alarm module, and a power management module; the second security gate includes a sensor module, a security detection module, an identity recognition module, a central control module, a gate execution module, a communication module, and a power management module.

[0013] Sensor module, collecting multi-source information in security inspection scenarios;

[0014] Security inspection module, which performs security inspections on people and items passing through the security gate;

[0015] Identity recognition module, which identifies the people passing through the security gate;

[0016] The central control module receives and processes signals from sensors and other modules, and controls the switching of boarding security inspection modes;

[0017] The gate execution module controls the passage of personnel according to the central control module;

[0018] Display and alarm module, the display screen is used to display prompt information, and the alarm device emits sound and light signals;

[0019] Communication module, which realizes connection with external management system and receives control instructions and parameter setting information issued by the management center;

[0020] The power management module provides stable power supply for the entire system.

[0021] Furthermore, in the sensor module, the installation and information exchange process of various sensors is as follows:

[0022] Crowd flow sensor: Installed near the security gate, it is used to monitor the flow of people passing through the security inspection area in real time. It uses infrared sensing and video image analysis technology to transmit the detected traffic flow data to the central control module;

[0023] Emergency identification sensors: including smoke sensors, fire alarm sensors, and emergency buttons, are used to detect sudden emergencies and can be manually triggered through the emergency button. When an emergency is detected, the signal is immediately transmitted to the central control module;

[0024] Special Population Detection Sensor: This sensor is used to identify special groups such as children and people with disabilities passing through security gates. Using a high-definition camera equipped with a wide-angle lens and deep learning algorithms, it captures facial features, height ratios, and body movements in real time. It then uses AI models to identify groups such as children (based on height thresholds and facial features) and the visually impaired (using tools such as canes and guide dogs), and sends identification signals to the central control module.

[0025] Furthermore, the multiple boarding security inspection modes built into the PLC controller in the central control module include: normal boarding security inspection mode, fast boarding security inspection mode, emergency pass mode, special group boarding security inspection mode, temporary exemption from inspection pass mode, and equipment maintenance mode.

[0026] Furthermore, the normal boarding security check mode, the specific process is as follows:

[0027] When the crowd flow sensor detects that the crowd flow is at a normal level and the emergency sensor and special crowd detection sensor do not send a signal, the system switches to the normal boarding security mode; the central control module conducts a comprehensive analysis and judgment of the results of the identity recognition module and the security detection module, and sends a gate door control instruction to the gate actuator module.

[0028] Furthermore, the fast boarding security check mode has the following specific process:

[0029] When the pedestrian flow sensor detects that the pedestrian flow reaches a preset threshold, the central control module automatically switches to the fast boarding security inspection mode; in this mode, the load balancing mode is adopted, and the two security gates carry business at the same time. The first security gate closes the security detection module, and the second security gate closes the identity recognition module. The central control module of the second security gate conducts a comprehensive analysis and judgment of the identity information recognition and security detection results.

[0030] Furthermore, the emergency passage mode has the following specific process:

[0031] When the emergency recognition sensor sends a signal, the central control module immediately switches to emergency access mode. At this point, the gate remains open, the first and second security gates are in standby mode, allowing personnel to evacuate quickly. At the same time, the alarm device sounds an alarm, and the display screen displays emergency prompts and evacuation guidance information.

[0032] Furthermore, the specific process of the boarding security check mode for special groups is as follows:

[0033] When the special crowd detection sensor detects a special crowd, the central control module switches to special crowd boarding security mode. In this mode, the gate opening time is extended to facilitate the smooth passage of special crowds, and a friendly reminder message is displayed on the display to remind nearby people to provide assistance.

[0034] Furthermore, the temporary inspection-free passage mode has the following specific process:

[0035] This mode is activated by receiving instructions from an external management center via the communication module. When special customers or personnel require access, the management center encrypts and transmits their names to the PLC control system via a dedicated management platform, creating a dynamic exemption database. Furthermore, different exemption permission levels are set based on personnel type and task requirements.

[0036] Furthermore, when the temporary inspection-free passage mode is activated, the specific steps are as follows:

[0037] 1. The identity recognition module compares the personnel identity information and exemption validity period with the exemption database through face recognition or ID scanning;

[0038] 2. After the comparison is successful, the system automatically determines the level of inspection exemption authority and adjusts the working mode of the security inspection module;

[0039] 3. After receiving the release instruction, the gate execution module opens a special inspection-free channel, and the display and alarm module displays the inspection-free passage prompt.

[0040] Furthermore, the equipment maintenance mode, the specific process is as follows:

[0041] If a module fails or requires an upgrade, the central control module switches to device maintenance mode, with the display indicating device maintenance and guiding personnel through the missing security checkpoints. In this mode, if the first security gate's security detection module, identification module, central control module, sensor module, or power management module fails or requires an upgrade, the corresponding module on the second security gate will be activated to maintain smooth security operations.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] 1. Integrating multiple functional modules such as security inspection, identity recognition, gate control, and display alarms into one system, and centrally managing and controlling them through a PLC controller, it reduces the system size and wiring complexity, and reduces installation and maintenance costs. At the same time, the dual security gates work together to avoid the risk of physical failure of a single device.

[0044] 2. By combining the PLC controller with information from multiple sensors, the boarding security inspection mode can be switched intelligently and flexibly, adapting to different passenger flows, emergency situations, needs of special groups, and equipment maintenance requirements, further improving the efficiency of the security inspection gate and the level of humanized service. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1This is the framework diagram of the integrated security gate PLC control system. DETAILED DESCRIPTION

[0046] Example 1, refer to Figure 1 The integrated security gate PLC control system of this embodiment includes a first security gate and a second security gate. The first security gate includes a sensor module, a security detection module, an identity recognition module, a central control module, a communication module, a display and alarm module, and a power management module; the second security gate includes a sensor module, a security detection module, an identity recognition module, a central control module, a gate execution module, a communication module, and a power management module.

[0047] The sensor module acquires multi-source information in security inspection scenarios, including pedestrian flow sensors, emergency identification sensors, and special population identification sensors. These sensors are connected to the central control module of the first security inspection gate via cables.

[0048] Crowd flow sensor: Installed near the security gate, it is used to monitor the flow of people passing through the security inspection area in real time. It uses infrared sensing and video image analysis technology to transmit the detected traffic flow data to the central control module;

[0049] Emergency identification sensors: including smoke sensors, fire alarm sensors, and emergency buttons, are used to detect sudden emergencies and can be manually triggered through the emergency button. When an emergency is detected, the signal is immediately transmitted to the central control module;

[0050] Special population detection sensors: These sensors are used to identify special populations, such as children and people with disabilities, passing through security gates. Using a high-definition camera equipped with a wide-angle lens and deep learning algorithms, they capture facial features, height ratios, and body movements in real time. Using AI models, they identify groups such as children (based on height thresholds and facial features) and the visually impaired (using assistive tools such as canes and guide dogs), and then send identification signals to the central control module.

[0051] The security inspection module, which includes metal detectors, X-ray security inspection machines, and liquid detectors, is used to conduct security inspections on people and their belongings passing through the security gates. Each security inspection device is connected to the central control module via a standardized communication protocol, and the detected signals are transmitted to the central control module in real time for analysis and processing;

[0052] The identity recognition module transmits the identification information to the central control module, which then analyzes it in conjunction with the security inspection results. This module integrates an ID reader and a facial recognition camera to verify personnel identity information. The ID reader can recognize a variety of documents, including ID cards, visas, passports, and boarding passes. It uses OCR text recognition and image processing technology for high accuracy and speed. The facial recognition camera identifies the person currently undergoing security inspection. If the identity matches the ID reader's identification, the real-time ticket purchase information is searched for that person's information.

[0053] The central control module, with a high-performance PLC controller at its core, receives signals from various sensors and input devices, performs logical processing and calculations, and sends control instructions to the actuators. The central control modules for the first and second security gates are connected to the same physical storage device, achieving data synchronization by reading and writing shared memory. The PLC controller also has built-in control programs for multiple boarding security modes, automatically switching between different boarding security modes based on sensor information.

[0054] The gate execution module, including the gate motor, transmission mechanism and gate body, controls the opening and closing status of the gate according to the instructions of the central control module to realize the passage control of personnel;

[0055] The display and alarm module is equipped with a display screen and an alarm device. The display screen is used to display security check prompt information, identity verification results, security check results, and the current boarding security check mode to personnel. When the alarm device detects an abnormal situation, such as prohibited items or identity information discrepancies, it will emit an audible and visual alarm signal and prompt personnel to go to the second security gate for processing.

[0056] The communication module uses multiple communication methods such as Ethernet and wireless networks to connect with external management systems. For example, it exchanges data with the security management center systems at airports and train stations, uploads security information to the management center, and receives control instructions and parameter setting information from the management center, including remote setting instructions for boarding security mode.

[0057] The power management module provides a stable power supply for the entire system and has power monitoring and protection functions. When power supply abnormalities occur, such as overvoltage, undervoltage, short circuit, etc., the power supply will be cut off in time to protect the safety of system equipment.

[0058] During the system operation, the central control module combines the information from the sensor module to control and switch the boarding security inspection mode. The specific implementation process of each mode is as follows:

[0059] Normal boarding security mode: When the crowd flow sensor detects that the crowd flow is at a normal level and there is no emergency sensor and special crowd detection sensor signal, the system is in normal boarding security mode, the first security gate is in working state, and the second security gate is in standby state. At this time, when a person approaches the first security gate, the identity recognition module first identifies the person and transmits the information to the central control module. At the same time, the items carried by the person are security checked, and the test results are transmitted to the central control module. The central control module conducts a comprehensive analysis and judgment of the identity information and security test results: If there are no abnormalities, it sends a door opening command to the gate actuator module, the gate door opens, and people are allowed to pass at a normal speed. At the same time, the successful passage information and normal boarding security mode are displayed on the display screen of the display and alarm module;

[0060] Fast Boarding Security Check Mode: When the passenger flow sensor detects a significant increase in passenger flow, reaching a pre-set threshold, the central control module automatically switches to Fast Boarding Security Check Mode. In this mode, load balancing is adopted, with both security gates carrying traffic simultaneously. The first security gate shuts down its security detection module, while the second gate shuts down its identity recognition module. The central control module of the second security gate conducts a comprehensive analysis and judgment of the identity information recognition and security detection results, using the same judgment logic as in the normal boarding security check mode. Simultaneously, the display screen prompts the user to enter Fast Boarding Security Check Mode, reminding them to pass quickly.

[0061] Emergency Pass Mode: When an emergency recognition sensor sends a signal (such as a fire), the central control module immediately switches to emergency pass mode. At this time, the gate remains open, the first and second security gates are in standby mode, allowing personnel to evacuate quickly. At the same time, the alarm device sounds an alarm, and the display screen displays emergency prompts and evacuation guidance information. The system uploads the emergency situation to the external management system through the communication module, notifying staff to respond promptly.

[0062] Special crowd boarding security check mode: When the special crowd detection sensor detects a special crowd, the central control module switches to the special crowd boarding security check mode. In this mode, the gate opening time is extended to facilitate the smooth passage of special crowds. At the same time, the display screen shows a friendly reminder message to remind people around to provide assistance;

[0063] Temporary inspection-free passage mode: This mode is activated by receiving instructions from an external management center (such as the airport command center or security management department) through the communication module. When special customer groups or personnel (personnel performing special tasks; personnel required for internal work, such as airport emergency maintenance personnel, aviation dispatch personnel, etc.) need to pass, the management center will encrypt and transmit the list information of these personnel to the PLC control system through a dedicated management platform, and create a dynamic inspection-free database. Each inspection-free personnel will be set with a specific inspection-free time limit, and regular maintenance and updates will be carried out. At the same time, different inspection-free authority levels will be set according to personnel type and task requirements: Level 1 inspection-free, no carry-on baggage inspection and body scanning required, Level 2 inspection-free, no carry-on baggage inspection required but must pass through the personal security inspection gate, Level 3 inspection-free, no personal security inspection required, and only carry-on baggage inspection required.

[0064] When the temporary inspection-free passage mode is activated, the system executes the following control logic:

[0065] 1. The identity recognition module compares the personnel identity information and exemption validity period with the exemption database through rapid face recognition or document scanning;

[0066] 2. After the comparison is successful, the system automatically determines the exemption permission level and adjusts the working mode of the security inspection module (such as turning off the X-ray machine scan and the liquid detector);

[0067] 3. After receiving the release instruction, the gate execution module opens a dedicated inspection-free channel, and the display and alarm module displays the inspection-free passage prompt;

[0068] Equipment Maintenance Mode: When a module fails or requires an upgrade, the central control module switches to equipment maintenance mode. The display screen displays equipment maintenance and guides personnel to the missing security checkpoints. In this mode, if the security detection module, identity recognition module, central control module, sensor module, or power management module of the first security gate fails or requires an upgrade, the corresponding module of the second security gate will be activated to maintain the smooth operation of security inspection services. The specific process is as follows, taking the failure of the identity recognition module of the first security gate as an example:

[0069] 1. Fault Detection and Information Recording: The fault monitoring system built into the first security gate monitors the operating status of the identity recognition module in real time. If the identity recognition module fails to execute a service N times in a row, the system immediately determines that it is in a faulty state. At this time, the first security gate stores the fault information (including detailed data such as fault type, occurrence time, and number of consecutive failures) in a structured format in a designated area of ​​shared memory. At the same time, starting with the user who failed the first execution, the information of all subsequent users who have not completed security checks is consolidated into a queue of people to be checked and stored in shared memory, providing a data foundation for subsequent processing.

[0070] 2. Fault response and business transfer: The central control module of the second security gate polls the shared memory at a set frequency to monitor fault information in real time. Upon detecting fault information from the identity recognition module of the first security gate, the central control module quickly activates its own corresponding identity recognition module and loads the queue data of personnel to be inspected. By analyzing the personnel information in the queue, such as ID numbers, it accurately determines the list of personnel to be inspected. According to the principle of first-in-first-out (first-in-queue personnel are inspected first, and manual arrangements can be made on-site based on the background list), identity recognition and subsequent security inspections are carried out in an orderly manner to ensure uninterrupted security inspection work.

[0071] 3. Fault repair and business handover: After the first security gate completes the fault repair, the last person's information who has not performed business is stored in the queue of people to be inspected. The fault information in the shared memory is cleared, and the identity recognition module is activated to take over the identity recognition business again.

[0072] 4. Business return and module shutdown: After the second security gate completes all business in the queue of personnel to be inspected, it checks whether the fault information of the first security gate in the shared memory has been cleared. If the fault information has been cleared, the second security gate shuts down the emergency activated identity recognition module and resumes normal working mode;

[0073] Through the detailed introduction of the above embodiments, the integrated security gate PLC control system of the present invention integrates multiple functional modules such as security detection, identity recognition, gate control, display alarm, etc. into one system, and performs unified management and control through the PLC controller, which reduces the volume and wiring complexity of the system and reduces the installation and maintenance costs; at the same time, through the unified control of the PLC controller, the intelligent and flexible switching of the boarding security inspection mode is realized, which can adapt to different passenger flow, emergency situations, special population needs and equipment maintenance needs, and further improve the passage efficiency and humanized service level of the security gate.

[0074] The above formulas are all dimensionless and numerically calculated, and the preset parameters in the formulas are set by technicians in this field according to actual conditions.

[0075] The above embodiments can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via wired or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that contains one or more available media sets. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state drive.

[0076] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0077] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0078] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0079] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0080] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0081] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. Integrated security gate PLC control system, characterized by: The system comprises: Sensor module: collects multi-source information in security inspection scenarios; Security inspection module: performs security inspection on people and items passing through the security gate; Identity recognition module: Identify the identity of people passing through the security gate; Central control module: Receives and processes signals from sensors and other modules, and controls the switching of boarding security inspection modes; Display and alarm module: The display screen is used to display prompt information, and the alarm device emits sound and light signals; Gate execution module: controls the passage of personnel according to the central control module.

2. The integrated security gate PLC control system according to claim 1 is characterized in that: The boarding security check modes built into the PLC controller in the central control module include: Normal boarding security check mode, fast boarding security check mode, emergency pass mode, special group boarding security check mode, temporary inspection-free pass mode, equipment maintenance mode.

3. The integrated security gate PLC control system according to claim 2 is characterized in that: Normal boarding mode, the specific process is as follows: When the crowd flow sensor detects that the crowd flow is at a normal level and the emergency sensor and special crowd detection sensor do not send a signal, the system switches to the normal boarding security mode; the central control module conducts a comprehensive analysis and judgment of the results of the identity recognition module and the security detection module, and sends a gate door control instruction to the gate actuator module.

4. The integrated security gate PLC control system according to claim 2 is characterized in that: The specific process of the fast boarding security check mode is as follows: When the pedestrian flow sensor detects that the pedestrian flow reaches a preset threshold, the central control module automatically switches to the fast boarding security inspection mode; in this mode, the load balancing mode is adopted, and the two security gates carry business at the same time. The first security gate closes the security detection module, and the second security gate closes the identity recognition module. The central control module of the second security gate conducts a comprehensive analysis and judgment of the identity information recognition and security detection results.

5. The integrated security gate PLC control system according to claim 2 is characterized in that: Temporary exemption mode includes the following processes: Create a dynamic inspection-free database: When special customer groups or personnel need to pass, the management center encrypts and transmits the list of these personnel to the PLC control system through a dedicated management platform and creates a dynamic inspection-free database; Temporary exemption steps: (1) The identity recognition module compares the personnel identity information and exemption validity period with the exemption database through face recognition or ID scanning; (2) After the comparison is successful, the system automatically determines the level of inspection exemption authority and adjusts the working mode of the security inspection module; (3) After receiving the release instruction, the gate execution module opens a special inspection-free channel, and the display and alarm module displays the inspection-free passage prompt.

6. The integrated security gate PLC control system according to claim 2 is characterized in that: Device maintenance mode, the specific process is as follows: In this mode, if the security detection module, identity recognition module, central control module, or sensor module of the first security door fails or needs to be upgraded, the corresponding modules of the second security door will be activated.

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