Intelligent security system for office area

Abstract

The invention provides an office area intelligent security system. The office area intelligent security system comprises an intelligent monitoring module used for monitoring personnel behavior data and fire safety data of an office area in real time; the intrusion detection module is used for detecting illegal intrusion behaviors at the entrance and exit of the office area; the central control module is used for analyzing and processing the personnel behavior data, the fire safety data and the illegal intrusion data, sending out a personnel abnormity prompt when the personnel behavior data is abnormal, sending out a fire extinguishing prompt when the fire safety data is abnormal, and generating an illegal intrusion signal when an illegal intrusion behavior is confirmed; when a person abnormity prompt is received, the abnormal person is marked, and a monitoring notification is sent to the security platform; when a fire extinguishing prompt is received, a fire extinguishing program is started, and fire extinguishing is completed; when an illegal intrusion signal is received, an illegal intrusion picture is recorded, alarms of different levels are sent out, and the security performance and efficiency of an office area are improved through automatic monitoring and operation of various modules.

Description

Technical Field

[0001] The present invention relates to the technical field of fire safety, and particularly to an intelligent security system for office areas. Background Art

[0002] With the rapid development of technologies such as the Internet of Things and artificial intelligence, traditional security systems have been difficult to meet the security requirements of modern office areas. Most traditional security systems provide security through smoke detectors and manual patrols. However, this manual-dependent method is prone to false alarms and missed alarms, and cannot monitor and capture abnormal personnel in a timely manner.

[0003] Therefore, how to improve the security performance of office areas by means of intelligence has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] The present invention provides an intelligent security system for office areas to solve the defect that the security of office areas in the prior art relies on manual work with poor effects.

[0005] In a first aspect, the present invention provides an intelligent security system for office areas, including: an intelligent monitoring module, a fire warning and extinguishing module, an intrusion detection module, a central control module, a communication module, and a user interaction module; The intelligent monitoring module is used to monitor the personnel behavior data and fire safety data of the office area in real time; The intrusion detection module is used to detect illegal intrusion behaviors at the entrances and exits of the office area; The central control module is used to analyze and process the personnel behavior data, the fire safety data, and the illegal intrusion data. When the personnel behavior data is abnormal, a personnel anomaly prompt is issued. When the fire safety data is abnormal, a fire extinguishing prompt is issued. When the illegal intrusion behavior is confirmed, an illegal intrusion signal is generated; The communication module is used to mark abnormal personnel and send a monitoring notice to the security platform when receiving the personnel anomaly prompt; The fire warning and extinguishing module is used to start the fire extinguishing procedure and complete fire extinguishing when receiving the fire extinguishing prompt; The user interaction module is used to record the illegal intrusion picture and issue different levels of alarms when receiving the illegal intrusion signal.

[0006] According to an intelligent security system for office areas provided by the present invention, the central control module is specifically used for: Collect video information within a preset time period, and screen the picture information of all pictures in the video information whose change amplitude of personnel behavior characteristics exceeds a preset value; Determine the abnormal behavior index of the personnel in the picture information as follows: ; Wherein, A represents the abnormal behavior index of the personnel, is the weight of each behavior characteristic, is the behavior characteristic value extracted through image analysis, is the normalization function of the characteristic value, represents the number of items of the behavior characteristics.

[0007] According to an intelligent security system for an office area provided by the present invention, the central control module is specifically further configured to: Determine the real-time monitored temperature, smoke concentration and harmful gas concentration in the fire safety data; Input the real-time monitored temperature, the smoke concentration and the harmful gas concentration into the fire risk index model, and output the fire risk index; When the fire risk index exceeds the index critical value, start the fire warning and extinguishing module to extinguish the fire; The fire risk index model is: ; Wherein, F represents the fire risk index, α , β and γ represent the weight coefficients, and α + β + γ = 1, T represents the real-time monitored temperature, C represents the smoke concentration, G represents the harmful gas concentration, represents the temperature threshold, represents the smoke concentration threshold, represents the harmful gas concentration threshold.

[0008] According to an intelligent security system for an office area provided by the present invention, the central control module is specifically further configured to: Identify the intrusion behavior characteristics of the illegal intrusion behavior; Input the intrusion behavior characteristics into the intrusion risk index model to obtain the intrusion risk index; When the intrusion risk index is within the preset range, generate an illegal intrusion signal; The intrusion risk index model is: ; Wherein, I represents the intrusion risk index, Indicates the weights of various intrusion behavior characteristics, Indicates the intrusion feature values extracted through behavior analysis, Indicates the normalization function of the feature values.

[0009] According to an intelligent security system for office areas provided by the present invention, the central control module is specifically further configured to: Based on the personnel behavior anomaly index, fire risk index, and intrusion risk index, generate a comprehensive security index as follows: ; Wherein, S represents the comprehensive security index, A Indicates the personnel behavior anomaly index, F Indicates the fire risk index, I Indicates the intrusion risk index, a , b And c Are weight coefficients, and a + b + c = 1, e Is the natural constant.

[0010] According to an intelligent security system for office areas provided by the present invention, the central control module is specifically further configured to: When the comprehensive security index is greater than the preset security index value, issue a traffic ban instruction; The intelligent monitoring module determines the positions of abnormal personnel, fire anomalies, and illegal intrusion positions through the traffic ban instruction; When the position of the abnormal personnel is the elevator or indoors, control the corresponding elevator door or indoor door to remain closed; When the fire anomaly position is at a high level, control the elevator equipment to stop running; When the illegal intrusion position is the access control, control the corresponding access control and the office area gate to close.

[0011] According to an intelligent security system for office areas provided by the present invention, the intelligent monitoring module is further configured to: Establish a connection with the access control system and identify each person undergoing access control identification; When the person is not recognized by the access control system, record the action trajectory and time of the person.

[0012] According to an intelligent security system for office areas provided by the present invention, the central control module is further configured to: Statistically analyze the personnel anomaly alerts, fire extinguishing alerts, and illegal intrusion signals within a preset time period; Visually display the personnel anomaly alerts, fire extinguishing alerts, and illegal intrusion signals so that the management personnel can optimize the intelligent security system.

[0013] An intelligent security system for an office area provided by the present invention, the fire warning and extinguishing module is further configured to: When receiving the fire extinguishing prompt, determine the fire warning level; When the fire warning level exceeds the primary threshold, send a primary warning message through the broadcast system and mobile terminals in the office area to prompt people to pay attention; When the fire warning level exceeds the intermediate threshold, automatically activate the audible and visual alarm device and notify relevant personnel by text message and email; When the fire warning level exceeds the high threshold, trigger an emergency evacuation instruction and guide the evacuation of people through the intelligent guidance system.

[0014] An intelligent security system for an office area provided by the present invention, the fire warning and extinguishing module is further configured to: When the fire warning level exceeds the high threshold, release inert gas to suppress the flame, start water spraying extinguishing in non-electrical fire areas, and start dry powder extinguishing in electrical fire areas.

[0015] An intelligent security system for an office area provided by the present invention includes: an intelligent monitoring module, a fire warning and extinguishing module, an intrusion detection module, a central control module, a communication module, and a user interaction module; the intelligent monitoring module is used to monitor the personnel behavior data and fire safety data in the office area in real time; the intrusion detection module is used to detect illegal intrusion behaviors at the entrances and exits of the office area; the central control module is used to analyze and process the personnel behavior data, fire safety data, and illegal intrusion data, and when the personnel behavior data is abnormal, issue a personnel abnormality prompt, and when the fire safety data is abnormal, issue a fire extinguishing prompt, and when an illegal intrusion behavior is confirmed, generate an illegal intrusion signal; the communication module is used to mark the abnormal personnel and send a monitoring notice to the security platform when receiving the personnel abnormality prompt; the fire warning and extinguishing module is used to start the fire extinguishing procedure and complete fire extinguishing when receiving the fire extinguishing prompt; the user interaction module is used to record the illegal intrusion picture and issue warnings at different levels when receiving the illegal intrusion signal. Through the automatic monitoring and operation of multiple modules and in a collaborative manner, the automatic and efficient security control of the office area is completed, improving the security performance and efficiency of the office area. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of the intelligent security system for the office area provided by this embodiment. Detailed implementation manners

[0018] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0019] Figure 1 It is a schematic structural diagram of the intelligent security system for the office area provided by this embodiment.

[0020] As Figure 1 shown, the intelligent security system for the office area provided by the embodiment of the present invention includes: an intelligent monitoring module 1, a fire warning and extinguishing module 2, an intrusion detection module 3, a central control module 4, a communication module 5 and a user interaction module 6; the intelligent monitoring module 1 is used to monitor the personnel behavior data and fire safety data in the office area in real time; the intrusion detection module 3 is used to detect illegal intrusion behaviors at the entrances and exits of the office area; the central control module 4 is used to analyze and process the personnel behavior data, fire safety data and illegal intrusion data, and when the personnel behavior data is abnormal, issue a personnel abnormality prompt, when the fire safety data is abnormal, issue a fire extinguishing prompt, and when an illegal intrusion behavior is confirmed, generate an illegal intrusion signal; the communication module 5 is used to mark the abnormal personnel and send a monitoring notice to the security platform when receiving the personnel abnormality prompt; the fire warning and extinguishing module 2 is used to start the fire extinguishing procedure and complete fire extinguishing when receiving the fire extinguishing prompt; the user interaction module 6 is used to record the illegal intrusion picture and issue alarms at different levels when receiving the illegal intrusion signal.

[0021] In a specific implementation process, the intelligent monitoring module 1 uses high-definition cameras to cover key areas, which can also be public areas for full-round and dead-angle-free coverage to ensure clear monitoring images can be provided. The fire warning and extinguishing module 2 includes various sensors to detect smoke concentration, temperature information, gas concentration information, etc. through the sensors. At the same time, the extinguishing module uses automatic spraying, including various different extinguishing methods such as water or foam. The intrusion detection module 3 mainly includes infrared sensors, motion induction sensors, etc. to detect illegal intrusion and detect broken glass at the same time to ensure that illegal intrusion information can be detected in a timely manner. The central control module 4 serves as the brain of the entire system, executes different decisions, and controls the communication module 5 and the user interaction module 6 to perform corresponding actions according to the information of the intelligent monitoring module 1, the fire warning and extinguishing module 2, and the illegal intrusion module to ensure comprehensive and accurate security protection for the office area.

[0022] The specific action process is as follows: The intelligent monitoring module 1 monitors the personnel behavior data and fire safety data at each location in real time, and the intrusion detection module 3 monitors the illegal intrusion behavior at the entrances and exits of the office area. When abnormal personnel behavior or abnormal fire data is detected, it indicates that there may be potential safety hazards at this time. At this time, the communication module 5 reports the abnormal personnel to the security platform for manual confirmation. In case of abnormal fire, it can be verified again through the fire warning and extinguishing module 2. When a fire is confirmed, extinguishing is carried out in a timely manner. After determining the illegal intrusion behavior, the user interaction module 6 can automatically or manually record the entire process of the picture and issue warnings at different levels to ensure the safety of the office area.

[0023] Among them, the central control module 4 is specifically used for: collecting video information within a preset time period, and screening the picture information of all pictures in the video information whose change amplitude of personnel behavior characteristics exceeds the preset value; determining the personnel behavior abnormality index in the picture information, such as (1): (1) Among them, A represents the personnel behavior abnormality index, is the weight of each behavior characteristic, is the behavior characteristic value extracted through image analysis, is the normalization function of the characteristic value, represents the number of items of behavior characteristics.

[0024] Then determine the real-time monitored temperature, smoke concentration, and harmful gas concentration in the fire safety data; input the real-time monitored temperature, smoke concentration, and harmful gas concentration into the fire risk index model, and output the fire risk index; when the fire risk index exceeds the index critical value, the fire warning and extinguishing module 2 is started for extinguishing; the fire risk index model is (2): (2) Wherein, F represents the fire risk index, α , β and γ represent the weight coefficients, and α + β + γ = 1, T represents the real-time monitored temperature, C represents the smoke concentration, G represents the concentration of harmful gases, represents the temperature threshold, represents the smoke concentration threshold, represents the concentration threshold of harmful gases.

[0025] Then, identify the intrusion behavior characteristics of the illegal intrusion behavior; input the intrusion behavior characteristics into the intrusion risk index model to obtain the intrusion risk index; when the intrusion risk index is within the preset range, generate an illegal intrusion signal; the intrusion risk index model is (3): (3); Wherein, I represents the intrusion risk index, represents the weight of each intrusion behavior characteristic, represents the intrusion characteristic value extracted through behavior analysis, represents the normalization function of the characteristic value.

[0026] Finally, based on the personnel behavior anomaly index, the fire risk index, and the intrusion risk index, generate a comprehensive security index, as shown in (4): (4); Wherein, S represents the comprehensive security index, A represents the personnel behavior anomaly index, F represents the fire risk index, I represents the intrusion risk index, a , b and c are the weight coefficients, and a + b + c = 1, e is the natural constant.

[0027] When the comprehensive security index is greater than the preset security index value, a traffic ban instruction is issued; the intelligent monitoring module 1 determines the positions of abnormal personnel, fire abnormalities, and illegal intrusions through instructions; when the position of abnormal personnel is in the elevator or indoors, the corresponding elevator door or indoor door is controlled to remain closed; when the fire abnormality position is at a high level, the elevator equipment is controlled to stop running; when the illegal intrusion position is at the access control, the corresponding access control and the office area gate are controlled to close.

[0028] Specifically, by combining artificial intelligence to quantify personnel behavior, fire safety, and illegal intrusion, the comprehensive security index is finally obtained, which can more reasonably manage the security of the office area. Compared with a single index, it is more scientific.

[0029] Furthermore, the intelligent monitoring module 1 in this embodiment is also used to: establish a connection with the access control system and identify each person who undergoes access control identification; when the person is not recognized by the access control system, record the person's action trajectory and time. Count the personnel abnormality prompts, fire extinguishing prompts, and illegal intrusion signals within a preset time period; visually display the personnel abnormality prompts, fire extinguishing prompts, and illegal intrusion signals to enable the management personnel to optimize the intelligent security system.

[0030] Specifically, through the linkage with the access control system, it is also possible to better avoid abnormal markings during personnel updates and reduce the probability of false alarms. Moreover, focusing on the personnel not recognized by the access control system can also specifically monitor key personnel and reduce the occurrence of security risks. And the visual display method can ensure that the management personnel clearly understand the abnormal personnel and behaviors, and then make more reasonable management behaviors to ensure the safety of the office area.

[0031] Furthermore, the fire warning and extinguishing module 2 in this embodiment is also used to: when receiving a fire extinguishing prompt, determine the fire warning level; when the fire warning level exceeds the primary threshold, send a primary warning message through the office area's broadcast system and mobile terminal to prompt personnel to pay attention; when the fire warning level exceeds the intermediate threshold, automatically activate the audible and visual alarm device and notify relevant personnel by text message and email; when the fire warning level exceeds the high threshold, trigger an emergency evacuation instruction and guide personnel to evacuate through the intelligent guidance system. When the fire warning level exceeds the high threshold, release inert gas to suppress the flame, start water spraying extinguishing in non-electrical fire areas, and start dry powder extinguishing in electrical fire areas.

[0032] Specifically, by issuing different instructions according to different fire warning levels, it avoids the panic caused by a one-size-fits-all approach. At the same time, different extinguishing methods are used for different areas, ensuring the minimum economic loss and security risks during the extinguishing process.

[0033] Identify abnormal behaviors (such as wandering, item leaving, gathering, etc.) through AI algorithms to enhance threat detection capabilities. Achieve precise identity verification, support blacklist alarm and VIP personnel identification. The system can continuously optimize the algorithm based on historical data to improve the detection accuracy. Combine multi-sensor data such as video, infrared, temperature and humidity, and air quality to provide more comprehensive security protection. Realize the intelligent linkage of systems such as access control, monitoring, and fire protection to improve the overall response efficiency. The intelligent security system for the office area covers multiple modules such as video surveillance, access control management, intrusion detection, fire warning, environmental monitoring, alarm and emergency response, etc. Through AI-driven intelligent analysis, multi-modal fusion technology, the combination of edge computing and cloud computing, mobile management, data-driven decision support, and high reliability and security design, it jointly improves the intelligent level and management efficiency of the system, providing comprehensive and efficient security protection for the office area. It not only improves the security and management efficiency of the office area, but also reduces the operation cost, improves the employee experience, and provides a more comprehensive and efficient security solution for the enterprise.

[0034] Compared with traditional security systems, the present invention has the following advantages: 1. Intelligence and automation Traditional security systems: Rely on manual monitoring and operation, and are prone to missed alarms and false alarms caused by human negligence or fatigue.

[0035] Intelligent security system: Realize automatic monitoring, behavior analysis and anomaly detection through AI technology, reducing human intervention. Support automatic alarm and emergency response to improve the processing efficiency.

[0036] 2. Real-time monitoring and early warning Traditional security systems: Monitoring data usually needs to be viewed manually, cannot be analyzed in real time, and the response speed is slow.

[0037] Intelligent security system: Real-time monitor the office area, and combine AI algorithms to automatically identify abnormal behaviors (such as intrusion, fire, item leaving, etc.). Early warning of potential risks and shorten the response time.

[0038] 3. Multi-system integration and linkage Traditional security systems: Each subsystem (such as video surveillance, access control, fire protection) usually operates independently and lacks linkage.

[0039] Intelligent security system: Integrate subsystems such as video surveillance, access control management, intrusion detection, and fire warning into one platform for unified management. Support intelligent linkage, such as intrusion detection triggering the camera to turn and record, and fire warning triggering the automatic unlocking of the access control, etc.

[0040] 4. Data analysis and decision support Traditional security systems: Have limited data recording and analysis capabilities and are difficult to provide in-depth decision support.

[0041] Intelligent security system: Identifies potential risks through big data analysis and optimizes security strategies. Provides visual reports to help management understand the security situation and make scientific decisions.

[0042] 5. Mobility and remote management Traditional security system: Has a fixed management method and cannot achieve remote monitoring and operation.

[0043] Intelligent security system: Supports mobile apps and remote control. Managers can view the security status and handle problems anytime, anywhere. Improves management flexibility and response speed.

[0044] 6. High precision and low false alarm rate Traditional security system: Has a relatively high false alarm rate and is easily triggered by environmental interference (such as animals, light changes).

[0045] Intelligent security system: Through AI algorithms and sensor fusion technology, improves detection accuracy and reduces the false alarm rate. The adaptive learning function can continuously optimize the algorithm and enhance the system accuracy.

[0046] 7. Cost - effectiveness Traditional security system: Relies on a large number of personnel, with relatively high operating costs.

[0047] Intelligent security system: Automated management reduces the dependence on security personnel and lowers labor costs. Preventive maintenance and energy - saving optimization further reduce operating costs.

[0048] 8. User experience Traditional security system: Has a poor user experience. For example, the access control system may require manual card - swiping, which is inefficient.

[0049] Intelligent security system: Supports contactless access (such as face recognition), improving employee convenience. Provides transparent management. Employees can view the security status through the system, enhancing their sense of security.

[0050] 9. Scalability and flexibility Traditional security system: Has poor scalability and is difficult to adapt to new requirements or technology upgrades.

[0051] Intelligent security system: Adopts a modular design, can flexibly expand functions according to requirements. Supports software upgrades to adapt to future technological developments.

[0052] 10. Emergency response ability Traditional security system: Emergency response relies on manual operation, with low efficiency.

[0053] Intelligent security system: Automatically detects abnormal situations and activates emergency response plans, shortening the response time. Supports a multi - level alarm mechanism to ensure that problems are handled in a timely manner.

[0054] Furthermore, this embodiment includes a multi-modal data acquisition module: By deploying high-definition cameras, infrared sensors, sound sensors, environmental sensors, and intelligent access control devices in the office area, multi-modal data is collected in real time, including video streams, audio streams, environmental data, and access control records. The collected video streams, audio streams, environmental data, and access control records are preprocessed, including denoising, normalization, and time alignment, and key features are extracted using feature extraction algorithms (such as convolutional neural network CNN, recurrent neural network RNN), such as (5): (5) where V is video data, A is audio data, and E is environmental data, are the extracted video, audio, and environmental features respectively.

[0055] The extracted video, audio, and environmental features are passed through a fusion algorithm of the attention mechanism to generate a comprehensive feature vector, such as (6)(7): (6) (7) where, are the attention weights of each modal feature, is a trainable parameter matrix.

[0056] Using long short-term memory network LSTM or variational autoencoder VAE, anomaly detection and behavior analysis are performed on the comprehensive feature vector, such as (8): (8) where, is the anomaly probability, when it triggers an alarm, is a preset threshold.

[0057] Finally, based on historical data and real-time data, combined with the anomaly probability, a dynamic risk score is calculated using a Bayesian network or a Markov model, such as (9): (9) where, is the time decay factor, γ is the decay coefficient, T is the time window; According to the dynamic risk score, response strategies are automatically generated, including triggering an alarm, locking the access control, notifying the security personnel, and optimizing the response strategies through a reinforcement learning model, such as (10): (10) where, s is the current state, aFor the actions taken, r For immediate rewards, γ For the discount factor, η For the learning rate.

[0058] Furthermore, the multi-modal data, feature vectors, anomaly detection results, and risk assessment results are stored in a distributed database through the big data storage and analysis module, and historical data mining and pattern recognition are carried out using big data analysis techniques. And through the visualization and user interaction module 6, the status of the security system, warning information, and risk assessment results are displayed in real time.

[0059] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative efforts.

[0060] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the essence of the above technical solution, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An intelligent security system for office areas, characterized in that: include: Intelligent monitoring module, fire warning and extinguishing module, intrusion detection module, central control module, communication module and user interaction module; The intelligent monitoring module is used to monitor the personnel behavior data and fire safety data of the office area in real time; The intrusion detection module is used to detect illegal intrusions at the entrances and exits of the office area; The central control module is used to analyze and process the personnel behavior data, the fire safety data and the illegal intrusion data, and when the personnel behavior data is abnormal, issue a personnel abnormality prompt, when the fire safety data is abnormal, issue a fire extinguishing prompt, and when the illegal intrusion behavior is confirmed, generate an illegal intrusion signal; The communication module is used to mark abnormal personnel and send a monitoring notification to the security platform when receiving abnormal personnel prompts; The fire warning and fire extinguishing module is used to start the fire extinguishing program and complete the fire extinguishing when receiving the fire extinguishing prompt; The user interaction module is used to record illegal intrusion images and issue different levels of alarms when receiving the illegal intrusion signal.

2. The office area intelligent security system according to claim 1, characterized in that: The central control module is specifically used for: Collect video information within a preset time period, and filter out image information of all frames in which the variation of the behavior characteristics of personnel in the video information exceeds a preset value; Determine the abnormal behavior index of the person in the picture information as follows: ； in, A Indicates the abnormal behavior index of personnel, is the weight of each behavioral feature, is the behavioral feature value extracted through image analysis, is the normalization function of the eigenvalue, The number of items that represent the behavior characteristics.

3. The office area intelligent security system according to claim 2, characterized in that: The central control module is also specifically used for: Determine the real-time monitoring temperature, smoke concentration and harmful gas concentration in the fire safety data; Inputting the real-time monitored temperature, the smoke concentration and the harmful gas concentration into a fire risk index model, and outputting a fire risk index; When the fire risk index exceeds the critical value, the fire warning and extinguishing module is activated to extinguish the fire; The fire risk index model is: ； in, F represents the fire risk index, α , β and γ represents the weight coefficient, and α + β + γ =1, T Indicates real-time monitoring of temperature. C Indicates smoke density. G Indicates the concentration of harmful gases. Indicates the temperature threshold, Indicates the smoke concentration threshold, Indicates the harmful gas concentration threshold.

4. The office area intelligent security system according to claim 3, characterized in that: The central control module is also specifically used for: Identify the intrusion behavior characteristics of the illegal intrusion behavior; Inputting the intrusion behavior characteristics into the intrusion risk index model to obtain an intrusion risk index; When the intrusion risk index is within a preset range, generating an illegal intrusion signal; The invasion risk index model is: ； in, I represents the intrusion risk index, Represents the weight of each intrusion behavior feature, Represents the intrusion feature value extracted through behavioral analysis, Represents the normalization function of the eigenvalues.

5. The office area intelligent security system according to claim 4, characterized in that: The central control module is also specifically used for: Based on the abnormal personnel behavior index, fire risk index and intrusion risk index, a comprehensive safety index is generated as follows: ； Among them, S represents the comprehensive safety index, A Indicates the abnormal behavior index of personnel, F represents the fire risk index, I represents the intrusion risk index, a , b and c is the weight coefficient, and a + b + c =1, e is a natural constant.

6. The office area intelligent security system according to claim 5, characterized in that: The central control module is also specifically used for: When the comprehensive safety index is greater than a preset safety index value, a prohibition instruction is issued; The intelligent monitoring module determines the location of abnormal personnel, abnormal fire fighting location and illegal intrusion location through the execution instruction; When the abnormal person is located in an elevator or indoors, the corresponding elevator door or indoor door is controlled to remain closed; When the fire abnormality position is a high floor, the elevator equipment is controlled to stop running; When the illegal intrusion location is a door access control, the corresponding door access control and office area door are controlled to be closed.

7. The office area intelligent security system according to claim 1, characterized in that: The intelligent monitoring module is also used for: Establish a connection with the access control system and identify each person who performs access control identification; When the person is not recognized by the access control system, the movement track and time of the person are recorded.

8. The office area intelligent security system according to claim 7, characterized in that: The central control module is also used for: Statistics on abnormal personnel alerts, fire extinguishing alerts and illegal intrusion signals within a preset time period; The personnel abnormality prompts, fire extinguishing prompts and illegal intrusion signals are displayed visually to enable managers to optimize the smart security system.

9. The office area intelligent security system according to claim 1, characterized in that: The fire warning and extinguishing module is also used for: Upon receiving the fire extinguishing reminder, determining the fire warning level; When the fire warning level exceeds the primary threshold, primary warning information is sent through the broadcasting system and mobile terminals in the office area to remind personnel to pay attention; When the fire warning level exceeds the intermediate threshold, the sound and light alarm equipment is automatically activated, and relevant personnel are notified via SMS or email; When the fire warning level exceeds the high-level threshold, an emergency evacuation command is triggered, and personnel are guided to evacuate through the intelligent guidance system.

10. The office area intelligent security system according to claim 9, characterized in that: The fire warning and extinguishing module is also used for: When the fire warning level exceeds the high threshold, inert gas is released to suppress the flame, water spraying is started in non-electrical fire areas, and dry powder fire extinguishing is started in electrical fire areas.

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