Security and protection monitoring terminal and system for construction site

Abstract

The invention belongs to the technical field of construction site security and protection, and particularly relates to a construction site security and protection monitoring terminal, which comprises a monitoring terminal and a background management system, and is characterized in that the monitoring terminal is in communication connection with the background management system; the monitoring terminal comprises an appearance scanning punch-card machine, a plurality of site monitoring devices and at least one inspection robot; the appearance scanning punch-card machine is arranged at an entrance of a construction site and is used for inputting appearance data of entering personnel and realizing a punch-card function, and the appearance data comprises physical features and wearing features and distinguishes functional identities of the personnel; according to the invention, through multi-terminal cooperation of the scanning punch-card machine, the site monitoring equipment and the inspection robot, all-directional management and control of accurate identification of construction site personnel identities, monitoring of operation behavior characteristics, early warning of potential safety hazards and traceable whole-course data are realized.

Description

Technical Field

[0001] This invention relates to the field of construction site security technology, specifically to construction site security monitoring terminals and systems. Background Technology

[0002] Construction sites are characterized by complex environments and frequent personnel movement, presenting high-risk operational scenarios such as working at heights and hot work. They also involve safety management requirements related to material storage and the management of visitors. Existing construction site monitoring systems primarily employ a single-camera monitoring model, which suffers from blind spots, delayed identification of safety violations, difficulty in accurately matching personnel identities, and untimely alert responses.

[0003] For example, traditional monitoring cannot automatically identify violations such as construction workers not wearing safety belts or protective equipment, requiring real-time manual inspections, which can easily lead to safety accidents due to human negligence; there is a lack of full tracking of outsiders after they enter the site, making it easy for them to accidentally enter dangerous areas; fire hazards in material storage areas are difficult to warn of in the early stages, and manual inspections are inefficient. It is for these reasons that we have proposed a construction site security monitoring terminal and system. Summary of the Invention

[0004] The purpose of this invention is to provide a security monitoring terminal and system for construction sites to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a construction site security monitoring terminal, comprising a monitoring terminal and a back-end management system, wherein the monitoring terminal is communicatively connected to the back-end management system; the monitoring terminal comprises an appearance scanning card reader, multiple site monitoring devices, and at least one inspection robot; The appearance scanning and attendance machine is set up at the entrance of the construction site to record the appearance data of the personnel entering the site and realize the attendance function. The appearance data includes physical characteristics and clothing characteristics, and distinguishes the personnel's job identity. Site monitoring equipment is distributed throughout the construction site, forming a comprehensive monitoring network with no blind spots, used to monitor the operational behavior of construction personnel and the smoke and fire situation in material storage areas; Inspection robots are used to conduct mobile inspections of blind spots in surveillance and areas with potential safety hazards; The back-end management system is used to receive and analyze data from monitoring terminals to achieve feature recognition, alert linkage, and key monitoring. The monitoring terminal is also equipped with edge computing nodes and device linkage gateways, forming a four-layer architecture of terminal acquisition - edge analysis - cloud management - device linkage; the edge computing nodes are deployed locally at the construction site and are responsible for real-time processing of high-definition images and sensor data acquired by the monitoring terminal. The device linkage gateway supports seamless integration with existing access control systems, fire protection systems, and broadcasting systems at the construction site, enabling multi-system collaborative response.

[0006] Preferably, the inspection robot includes a body, a drive unit, and a data acquisition device. The body houses a battery and an integrated control box, which includes a robot control module, a storage module, and a network communication module. The drive unit includes four symmetrically distributed drive wheels and a corresponding drive motor for each drive wheel. Each drive motor is controlled individually or synchronously. A viewfinder is located on the top of the camera body. An adjustment mechanism is provided between the viewfinder and the camera body. The adjustment mechanism includes a support frame, a connector, and an electric telescopic rod. The support frame is located near the top surface of the camera body, and two fixing blocks are installed on the camera body near the bottom of the support frame. The bottom of the support frame is located on the opposite side of the two fixing blocks, and locking bolts are provided on the outside of the fixing blocks to be screwed onto the support frame for fixation.

[0007] Preferably, a connector is rotatably provided on the top of the support frame. The connector is L-shaped, with one end installed on the support frame and the other end fixed to the rear side of the viewfinder. An electric telescopic rod is provided in the middle of the support frame. The top of the electric telescopic rod is connected to the bottom of the viewfinder. The telescopic rod can be extended and retracted to tilt the viewfinder forward and backward. At the same time, the rear connector rotates synchronously and assists in supporting the viewfinder. The viewfinder includes a depth camera, an infrared thermal imager, a fill light, and a microphone; the inspection robot has a built-in autonomous control system, which can record construction site data and monitor the use of large materials, and also has a communication function to connect with the backend. Commands can be sent to the inspection robot remotely via an APP, and remote communication can be achieved with personnel in the construction site.

[0008] Preferably, the appearance scanning attendance machine includes an image acquisition module, an identity recognition module, an attendance module, and a data transmission module; the image acquisition module collects personnel appearance data, the identity recognition module distinguishes personnel identities by comparing them with a preset functional identity database, the attendance module records attendance data, and the data transmission module synchronizes appearance data, identity information, and attendance data to the back-end management system.

[0009] Preferably, the site monitoring equipment is equipped with a high-definition image acquisition unit and a feature analysis unit. The feature analysis unit communicates with the construction personnel operation specification feature database preset by the back-end management system. The construction personnel operation specification features include safety belt fastening standards, welding mask wearing standards, and other safety protection equipment wearing standards and operation behavior standards. When the feature analysis unit detects that the construction personnel have not taken the preset safety operation, the warning mechanism is triggered. The warning mechanism includes on-site lighting warning and remote linkage warning. On-site lighting warning is realized through the warning lights integrated into the site monitoring equipment, and remote linkage warning is realized through the back-end management system to push the warning information to the customized APP of the on-site safety officer and relevant personnel.

[0010] Preferably, the back-end management system establishes a personnel identification model based on appearance data to accurately match the identity of the actual operators; for habitual violators who repeatedly violate regulations, they are automatically marked as key monitoring targets, increasing the monitoring frequency and data analysis intensity of their areas; The back-end management system identifies and marks the identities of registered visitors and tracks their movements throughout the process using site monitoring equipment. When a visitor is detected approaching a dangerous area or moving around in a disorderly manner, an alert mechanism is triggered and information is sent to the back-end management system.

[0011] Preferably, the site monitoring equipment deployed in the material storage area has a built-in smoke and fire recognition model. It identifies flame and smoke characteristics by collecting images in real time. When smoke and fire are detected, it triggers a high-level warning, including keeping the on-site warning light on, triggering the alarm to sound, and pushing the warning information to the back-end management system and relevant personnel's APP.

[0012] Preferably, the back-end management system is equipped with a large-capacity storage module to store attendance data, monitoring images, inspection data and warning information. The stored data is retained for no less than 90 days and supports multi-dimensional retrieval and traceability. The functional identity database includes preset appearance data and identity information of construction workers, safety officers, and external visitors. It supports adding, modifying, and deleting identity data, and the data transmission process uses an encryption protocol to ensure security.

[0013] Preferably, the inspection robot is equipped with a high-definition camera, an infrared sensor, a path planning module, and a communication module; the path planning module supports preset inspection routes or autonomous path planning, and the high-definition camera and infrared sensor are used to collect image and temperature data of the inspection area and transmit them to the back-end management system for analysis. When the inspection robot detects violations, abnormal temperatures, or safety hazards, it triggers an alert mechanism in the backend management system via the communication module, and simultaneously pushes relevant data to the safety officer's APP.

[0014] This invention aims to solve the technical problems of existing construction site monitoring systems, such as incomplete monitoring, inaccurate identification, untimely warnings, and low management efficiency. It provides a multi-terminal collaborative system integrating a scanning and attendance machine, site monitoring, and inspection robots. Through features such as feature recognition, linked warnings, and key monitoring, it achieves comprehensive safety management of construction sites. Compared with existing technologies, this invention has the following beneficial effects: This invention achieves comprehensive management and control at construction sites through multi-terminal collaboration involving scanning time clocks, site monitoring equipment, and inspection robots. This includes accurate identification of personnel, monitoring of operational behavior characteristics, early warning of safety hazards, and full data traceability. Compared to existing technologies, its advantages are: 1) Multi-terminal coverage without blind spots, combining fixed monitoring and mobile inspection to eliminate monitoring blind spots; 2) AI-powered feature recognition identifies violations and fire hazards, replacing manual real-time inspections and improving recognition efficiency and accuracy; 3) The combination of on-site warnings and remote APP linkage ensures timely and efficient safety intervention; 4) Implement differentiated monitoring strategies for key personnel and visitors to achieve precise risk control; 5) Data storage and traceability functions provide data support for safety management and effectively reduce the incidence of safety accidents at construction sites. Attached Figure Description

[0015] Fig. 1 This is a schematic diagram of the inspection robot of the present invention; Fig. 2 This is a schematic diagram of the construction site layout for this invention; Fig. 3 This is a system logic block diagram of the present invention.

[0016] In the picture: 1. Camera body, 2. Drive wheel, 3. Display screen, 4. Support frame, 5. Locking bolt, 6. Connector, 7. Electric telescopic rod, 8. Viewfinder. Detailed Implementation

[0017] The technical solutions of 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0019] Example: Please see Figs. 1-3 The present invention provides the following technical solution: The construction site security monitoring terminal and system includes a monitoring terminal and a back-end management system. The monitoring terminal and the back-end management system are connected for communication. The monitoring terminal consists of an appearance scanning card reader, a fixed-position site monitoring device, and a mobile inspection robot. The three components establish wireless or wired communication links with the back-end management system to achieve real-time data transmission and command interaction.

[0020] Structure and Function of the Appearance Scanning Time-Taking Machine: The appearance scanning time-taking machine is installed at the entrance of the construction site and integrates an image acquisition module, an identity recognition module, a time-taking module, and a data transmission module. The image acquisition module is used to record the appearance data of the personnel entering the site, including physical features and clothing characteristics. The identity recognition module has a built-in functional identity database. By comparing the collected appearance data with the preset data in the database, it automatically distinguishes the functional identity of the personnel (including construction workers, administrators, visitors, etc.). The time-taking module is used to record the entry time and exit time of personnel, generate attendance data, and synchronize it to the back-end management system.

[0021] The appearance scanning attendance machine also includes a biometric data collection unit and a safety equipment detection module. The biometric data collection unit includes fingerprint / facial recognition and is used to store a unique biometric identifier for each person, forming a dual identity verification with appearance data to avoid the risk of proxy attendance. The safety equipment detection module uses image recognition technology to automatically detect whether the personnel entering the site are wearing basic protective equipment such as safety helmets and work clothes as required. Those who do not meet the requirements are prohibited from attendance and the rectification prompt is pushed to the APP.

[0022] The functional identity database has built-in subcategories, including high-altitude workers, hot work workers, special equipment operators, supervisors, and visitors. Visitors include construction workers and government inspectors. Corresponding permission area whitelists are configured for different identities, such as allowing visitors to only enter the office area and follow designated tour routes.

[0023] The fixed-position site monitoring equipment supports 4K ultra-high-definition resolution, is equipped with an infrared fill light module, has a night vision distance of ≥50 meters, and a 360-degree panoramic rotating pan-tilt unit with a horizontal rotation range of 0-360 degrees and a vertical rotation range of -15 degrees-90 degrees. It can automatically adjust the monitoring angle according to the backend command to track target personnel or events.

[0024] Layout and Functions of Site Monitoring Equipment: Multiple site monitoring devices are evenly distributed throughout the construction site's work areas, material storage areas, hazardous areas, and passageways, forming a comprehensive, blind-spot-free monitoring network. Each monitoring device is equipped with a high-definition image acquisition unit and a feature analysis unit. The feature analysis unit communicates with the pre-set database of construction personnel operation specifications in the back-end management system. These specifications include safety equipment wearing standards (such as safety belt fastening and welding mask wearing) and operational behavior standards. When a construction worker is detected in their designated area, the feature analysis unit compares their operational behavior with the pre-set operation specifications in real time. If any violation of safety procedures is detected, an alert mechanism is triggered.

[0025] The feature analysis unit has the functions of identifying abnormal behavior trajectories and recognizing compliance standards for equipment operation. It analyzes data such as the movement speed and dwell time of construction personnel, and automatically identifies abnormal behaviors such as prolonged lingering in restricted areas, rapid running away, escaping from gatherings of multiple people, and violating regulations on work. It also identifies tower crane operator gesture specifications, welding machine usage procedures, etc., and judges whether the equipment operation meets safety requirements through image comparison.

[0026] Supports simultaneous multi-target identification; a single device can simultaneously detect the actions of more than 10 people, accurately distinguishing violations by different individuals. Each site monitoring device integrates temperature and humidity sensors, dust sensors, and noise sensors to collect real-time construction environment data. When the dust concentration exceeds 0.5 mg / m³... 3 When the noise exceeds 85dB(A), an environmental warning will be automatically triggered, and the information will be pushed to the management personnel's APP. At the same time, the on-site spraying equipment will be linked to start dust suppression operations.

[0027] The warning mechanism is implemented through on-site warnings and remote linkage warnings. On-site warnings are achieved through warning lights integrated into the site monitoring equipment. When a violation is detected, the warning lights automatically illuminate to alert on-site personnel. Remote linkage warnings are achieved through a back-end management system. The back-end management system pushes violation warning information in real time to the customized APP of on-site safety officers, violators, and relevant management personnel, enabling timely intervention and adjustments. Violation information includes, but is not limited to, the identity of the violator, the violation, the location of the violation, the time of the violation, and on-site images.

[0028] Key monitoring functions: The back-end management system establishes a personnel identification model based on the physical and clothing characteristics collected by the image acquisition module and site monitoring equipment to accurately match the identity of the actual operators; for habitual violators who repeatedly violate regulations, the system automatically marks them as key monitoring targets, increasing the monitoring frequency and data analysis intensity of the area where the person is located, and eliminating security risks in advance; for external visitors, after the back-end management system marks their identity, it tracks their movement trajectory throughout the entire process through site monitoring equipment. When it detects that an external visitor is approaching a dangerous area or moving around in a disorderly manner, it immediately triggers an alarm mechanism and pushes information to the back-end management system.

[0029] The alerts are responded to in a tiered manner, with alert messages divided into three levels based on the severity of the violation: Level 1 warning, minor violation, such as failure to wear gloves and safety helmet as required: A notification will be sent to the violator and the team safety officer via the APP, requiring them to rectify the situation and upload photos of the rectification within 15 minutes; Level 2 warning, such as not wearing a safety belt or welding mask while working at height: push notification to the project safety manager, team safety officer and the person in violation via APP, and simultaneously link the on-site broadcast system to broadcast a warning notice, requiring immediate work stoppage and rectification; Level 3 warning (serious violation / emergency, such as fire, excessive gas): Push to all management personnel's APP, trigger the fire protection system to activate sprinkler / alarm devices, shut off the power in the relevant area, and issue an emergency evacuation notice through the broadcast system.

[0030] The back-end management system establishes a risk rating model based on data such as the number of violations, the type of violation, and the timeliness of rectification, classifying risks into three categories: low risk, medium risk, and high risk. High-risk personnel (≥3 violations or 1 serious violation within 30 days): In addition to increasing the monitoring frequency, the system will automatically restrict their access to high-risk work areas. They can only have their access restored after completing safety training and passing the assessment. Medium-risk personnel (1-2 violations within 30 days): Weekly safety warning text messages will be sent, and safety officers will conduct regular one-on-one safety training. For low-risk personnel, if there are 1-2 violations in the past two months, the safety officer will conduct a key spot check once a week. If there are no violations for more than three consecutive weeks, the risk personnel rating will be cancelled.

[0031] Full-process management of visitors: Before entry: External personnel must submit an access application in advance through the APP by the construction party's contact person, specifying the reason for the visit, the time, and the accompanying personnel. After the background review is approved, a temporary access QR code will be generated. Upon entry: The appearance scanning card reader scans the QR code and collects appearance data, simultaneously generating a temporary electronic pass that includes the permitted area. Upon departure: The time clock automatically records the departure time and simultaneously deletes the temporary access permission. Personnel who do not leave on time will trigger an alert and push information to the accompanying personnel and the security officer's APP.

[0032] Fire monitoring function: The site monitoring equipment deployed in the material storage area has a built-in smoke and fire recognition model in its feature analysis unit. By collecting images of the material storage area in real time, it can identify features such as flames and smoke. When smoke and fire are detected, a high-level warning is immediately triggered, including the on-site warning light staying on, the on-site alarm sounding, and the fire warning information being pushed to the back-end management system and relevant personnel's APP. At the same time, the on-site images and timestamps are recorded.

[0033] Structure and function of the inspection robot: The inspection robot is a battery-powered mobile terminal equipped with a high-definition camera, infrared sensor, path planning module and communication module; the inspection robot plans its own path based on the inspection route preset by the back-end management system or based on real-time monitoring data, and conducts mobile inspections of monitoring blind spots, high-risk areas and areas with potential safety hazards in the construction site; during the inspection, the high-definition camera and infrared sensor collect environmental images and temperature data in real time, and transmit them to the back-end management system for analysis. If violations, abnormal temperatures or other safety hazards are detected, an alarm mechanism is immediately triggered.

[0034] Data storage and traceability functions: The back-end management system is controlled by hierarchical permissions, including different roles such as super administrator, safety administrator, equipment administrator, team safety officer, and ordinary user. Different roles can only view and operate data within their corresponding permission scope. For example, ordinary users can only view their own attendance and violation records, while safety administrators can view the entire site monitoring data and warning information. The back-end management system is equipped with a large-capacity storage module to store attendance data from the appearance scanning time clock, monitoring images and analysis results from the site monitoring equipment, inspection data from the inspection robot, and all warning information. The stored data is retained for no less than 90 days and supports retrieval and tracing by personnel identity, time, location, event type, and other dimensions.

[0035] The storage module uses an encrypted hard drive, and all data is stored in an encrypted manner to prevent data tampering; a data backup mechanism is established, and local backup and cloud backup are performed automatically every day. The backup data is kept in three versions to prevent data loss due to hardware failure.

[0036] Supports operation log auditing, recording all user logins, data queries, command issuance, and other operations. Logs are retained for no less than 180 days to facilitate the traceability of data operation behavior. The data transmission module uses the AES-256 encryption protocol to encrypt attendance data, biometric data, and appearance data during transmission. It also supports local data backup and cloud synchronization to prevent data loss or leakage.

[0037] The monitoring terminal is also equipped with edge computing nodes and device linkage gateways, forming a four-layer architecture of terminal acquisition, edge analysis, cloud management, and device linkage. The edge computing nodes are deployed locally on the construction site and are responsible for processing high-definition images and sensor data collected by the monitoring terminal in real time, reducing the transmission pressure on the cloud and keeping the response latency of key functions such as violation identification and smoke detection within 500ms. The device linkage gateway supports seamless integration with the existing access control system, fire protection system, and broadcasting system on the construction site, enabling multi-system collaborative response and improving the efficiency of the closed-loop safety management system.

[0038] The inspection robot comprises a body 1, a drive unit, and a data acquisition device, which is a viewfinder 8. The body 1 houses a battery and an integrated control box, which includes a robot control module, a storage module, and a network communication module. The drive unit consists of four symmetrically distributed drive wheels 2 and a corresponding drive motor for each drive wheel 2. Each drive motor can be controlled individually or synchronously. Driving, rotation, and reversing are achieved by controlling the drives on both sides, meeting the daily needs of construction sites. A viewfinder 8 is provided on the top of the camera body 1. An adjustment mechanism is provided between the viewfinder 8 and the camera body 1. The adjustment mechanism includes a support frame 4, a connector 6, and an electric telescopic rod 7. The support frame 4 is located near the top surface of the camera body 1, and two fixing blocks are installed on the camera body 1 near the bottom of the support frame 4. The bottom of the support frame 4 is located on the opposite side of the two fixing blocks, and a locking bolt 5 is provided on the outside of the fixing blocks and screwed onto the support frame 4 for fixation. The support frame 4 can rotate back and forth on the fixing blocks to adjust the tilt angle. A connector 6 is rotatably mounted on the top of the support frame 4. The connector 6 is L-shaped, with one end mounted on the support frame 4 and the other end fixed to the rear side of the viewfinder 8. An electric telescopic rod 7 is provided in the middle of the support frame 4. The top of the electric telescopic rod 7 is connected to the bottom of the viewfinder 8. The viewfinder 8 is tilted back and forth by the extension and retraction of the electric telescopic rod 7. At the same time, the rear connector 6 rotates synchronously and assists in supporting the viewfinder 8. The viewfinder 8 includes a depth camera, an infrared thermal imager supplement light, and a microphone, enabling more accurate environmental modeling and spatial monitoring; in addition, the infrared thermal imager can also inspect for abnormal overheating of electrical equipment. The inspection robot has a built-in autonomous control system and can record and update construction site information. It is used to monitor the use of large materials and also has a communication function that connects to the backend. Commands can be sent to the inspection robot remotely via an APP to control its movement. It can also communicate remotely with personnel on the construction site. The display screen 3 on the inspection robot can also be used for remote video communication, enhancing the interactivity between management and the site.

[0039] The inspection robot integrates laser SLAM, visual SLAM, and GPS / BeiDou dual-mode positioning. In areas of the construction site without satellite signal, it uses laser and visual SLAM to build a map in real time. In open outdoor areas, it corrects its position through satellite positioning with a positioning accuracy of ≤0.5 meters. It supports dynamic map updates. When the location of materials or the layout of equipment in the site changes, the robot automatically updates the environmental map by collecting images, without the need for manual recalibration of the path.

[0040] Three inspection modes are preset: routine inspection, key inspection, and emergency inspection. The routine mode conducts a full-coverage inspection according to the optimal route set in the background. The key mode targets areas with repeated violations and high-risk equipment, such as high-voltage distribution boxes and flammable and explosive material areas, and automatically increases the inspection frequency. The emergency mode prioritizes planning the shortest route to the incident area when a fire or gas exceeding the standard warning is received.

[0041] The inspection robot is equipped with ultrasonic sensors, millimeter-wave radar, and collision detection sensors, forming a 360-degree obstacle avoidance range without blind spots. It can identify dynamic obstacles, such as moving construction workers and moving engineering vehicles, as well as static obstacles, such as temporarily stacked pipes and tools. Obstacles smaller than 0.3 meters will automatically detour, and obstacles larger than 0.3 meters will be pushed to the administrator's APP for confirmation and processing in real time.

[0042] Equipped with a 20Ah high-capacity lithium battery, it provides ≥8 hours of battery life on a single charge and supports fast charging mode. It has a built-in power monitoring module that automatically triggers a low power warning when the remaining power is ≤20%, plans the optimal route back to the charging dock, or reminds staff to charge or replace the battery in time. It also supports battery health monitoring, recording the number of charge and discharge cycles and cycle life. When the battery capacity decays to 80% of the rated capacity, it pushes a replacement reminder.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or basic characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of the invention is defined by the appended claims rather than the foregoing description. Therefore, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0044] Example 1: Application of Security Monitoring System at Large-Scale Petrochemical Construction Sites Project Background: A large-scale petrochemical construction site covers an area of ​​approximately 800 acres and includes six high-risk areas such as a tank area, a hot work area, and a pipe gallery installation area. It employs over 1,200 workers daily, involved in more than 10 types of specialized operations including high-altitude work, hot work, and special equipment operation. Approximately 50-80 external personnel visit daily, including equipment suppliers, government regulators, and third-party testing agencies. The core risks are fire, leakage of toxic and harmful gases, falls from heights, and violations of hot work regulations. A comprehensive and highly responsive security monitoring system is urgently needed to ensure construction safety.

[0045] Monitoring terminal deployment: Appearance scanning attendance machine: At least two units are deployed at each of the three main entrances to the east, west and south of the construction site. The machine integrates fingerprint and facial recognition modules, safety equipment detection modules, and is linked to the access control system. The built-in functional identity database contains 12 subdivided identities, among which hot work personnel and special equipment operators are separately configured with a "high-risk area access whitelist".

[0046] Fixed-position site monitoring equipment: A total of 68 units are deployed, with one unit every 50 meters in the tank area and hot work area. It supports 4K ultra-high definition, infrared supplementary lighting, and night vision distance of 60 meters. It integrates sensors for temperature, humidity, dust, noise, and toxic gases such as hydrogen sulfide and methane, and is linked to the on-site sprinkler system and gas alarm device. All equipment achieves no blind spots through 360-degree panoramic pan-tilt-zoom, and a single device can simultaneously support the recognition of 15 people's operating behavior.

[0047] Inspection robots: 8 units are deployed, 6 of which are used for routine inspections and 2 are dedicated to key inspections of the tank area and pipe gallery installation area; equipped with laser SLAM, GPS / BeiDou dual-mode positioning, integrated infrared thermal imager and gas sensor, preset routine inspection routes cover the entire construction site, and in key inspection mode, high-risk areas are covered once every 2 hours.

[0048] Backend management system configuration: Hierarchical access control settings: 1 super administrator, 5 security administrators, 3 equipment administrators, 12 team safety officers, and more than 1,200 ordinary users. Security administrators can view all monitoring data and warning information in real time, while ordinary users can only view their personal attendance and violation records.

[0049] Data storage: Equipped with a 2TB encrypted hard drive, supporting local and cloud dual backups, retaining monitoring images, attendance data, violation records, etc. for 180 days, and supporting multi-dimensional retrieval by work area, violation type, and time.

[0050] System operation process: Personnel Entry Management: Construction workers: Through dual verification of fingerprint and facial recognition, the safety equipment detection module automatically detects the wearing of safety helmets, flame-retardant work clothes, and protective shoes. If the standards are met, an attendance record is generated and synchronized to the backend. For high-altitude workers, special operation certificates are additionally verified, and the system automatically matches them to the whitelist of permitted areas.

[0051] External personnel: The construction party's contact person submits an access application on the APP 24 hours in advance, specifying the purpose of the visit, accompanying persons, and planned route. After the background review is approved, a temporary QR code is generated. Upon entry, the QR code is scanned and appearance data is collected to generate a temporary electronic pass that only allows entry into the office area and designated equipment area. The background tracks the movement trajectory in real time.

[0052] Violation monitoring and warning response: Routine violation handling: A construction worker in the utility tunnel installation area was working at height without wearing a safety belt. The fixed monitoring equipment detected the violation in real time and triggered a level two warning. The information was immediately pushed to the project safety manager, the team safety officer, and the violator's APP. The on-site broadcast also announced, "Violation of high-altitude operation in the No. 3 utility tunnel area. Please stop work immediately for rectification." The safety officer arrived at the scene within 5 minutes to supervise the rectification.

[0053] Emergency Response: A small fire broke out at a hot work site in the tank area due to improper operation. The smoke and fire recognition model of the fixed monitoring equipment triggered a level 3 warning. The system immediately pushed the information to the APP of all management personnel, and linked the fire protection system to start the sprinkler system, shut off the power in the tank area, and broadcast an emergency evacuation notice. The inspection robot automatically planned the shortest path to the incident area, transmitted on-site images in real time, and assisted in directing the rescue.

[0054] Risk personnel management: A hot work operator was found to have committed three violations within 30 days, including two instances of not wearing a welding mask and one instance of entering an unauthorized tank area. The system marked him as a high-risk person and automatically restricted his access to all high-risk areas. After the person completed four hours of specialized safety training and passed the assessment, his access privileges were restored in the background, and the monitoring frequency of his work area was increased.

[0055] Two construction workers were each found to have committed minor violations within 30 days, such as not wearing protective gloves. They were marked as medium-risk personnel, and the system sent weekly safety warning text messages. The team's safety officer conducted one-on-one safety training.

[0056] Within six months of system operation, the violation rate for high-altitude operations decreased by 82%, the violation rate for hot work operations decreased by 78%, and no major safety accidents such as fires or gas leaks occurred; incidents of unauthorized entry of outsiders into high-risk areas decreased from an average of 12 per month to 0; the recurrence rate of violations by high-risk personnel after training was only 3%, data traceability efficiency improved by 90%, and safety management costs were significantly reduced.

[0057] Example 2: Application of Security Monitoring System at Medium-Sized Residential Building Construction Sites Project Background: A medium-sized residential building construction site consists of 12 18-story residential buildings, covering an area of ​​approximately 300 acres. There are more than 600 construction workers on a daily basis. The core operations are scaffolding erection, rebar tying, and concrete pouring. High-frequency risk points include working at heights without wearing safety belts, illegal material stacking, and non-standard temporary power supply. External personnel mainly consist of supervisors and homeowner visitors. It is necessary to balance routine safety management with improving construction efficiency.

[0058] Monitoring terminal deployment: Exterior scanning attendance machine: At least 2 units are deployed at the main entrance, integrating facial recognition and QR code scanning functions. The safety equipment detection module focuses on detecting the wearing of safety helmets and safety belts. The functional identity database includes 6 types of identities, such as construction personnel, supervisors, and owner visitors. Supervisors have access to all work areas, excluding scaffolding areas, while owner visitors are only allowed to enter the model rooms and office areas.

[0059] Fixed-position site monitoring equipment: 32 units deployed, including 2 units in the scaffolding area of ​​each building, and 4 units each in the material storage area and temporary power supply area. Supports 4K resolution, infrared illumination, night vision distance of 55 meters, and integrates temperature, humidity, and dust sensors. When the dust concentration exceeds 0.5 mg / m³... 3 The automatic linkage spray system reduces dust; a single unit can simultaneously support the operation behavior recognition of 12 people.

[0060] Inspection robots: 4 units are deployed, using laser SLAM and visual SLAM positioning. The preset regular inspection routes cover all work areas, and the key inspection mode automatically increases the inspection frequency for Building 3 and Building 7.

[0061] Backend management system configuration: Hierarchical access control settings: 1 super administrator, 2 safety administrators, 1 equipment administrator, and 8 team safety officers. Safety administrators can view monitoring data for the entire construction site, while team safety officers can only view data for the area under their team's responsibility.

[0062] Data storage: Equipped with a 1TB encrypted hard drive, local and cloud backup, data retention for 90 days, and supports quick retrieval by name and violation time.

[0063] System operation process: Daily operation monitoring: One construction worker was working on the scaffolding area on the 5th floor of Building 3 without wearing a safety belt. The fixed monitoring equipment immediately triggered a level 2 warning. The system pushed the information to the project safety manager, the team safety officer, and the violator's APP, and also broadcast a warning notice on site. The violator stopped work on the spot to rectify the situation. After the worker uploaded photos of the rectification, the system lifted the warning. The entire rectification process was recorded and saved.

[0064] During a routine inspection, the inspection robot discovered that the steel bars in the material storage area were stacked beyond the safety boundary, triggering a level one warning. The warning was then sent to the team safety officer and material manager's APP, requiring rectification within 15 minutes. The safety officer can view the rectification progress in real time through the APP, and upload on-site photos for archiving after rectification is completed.

[0065] Management of visitors: Homeowner visitors submit their visit requests via the sales office's app, specifying the visit time and accompanying personnel. Once approved, a temporary QR code is generated. Upon entry, visitors scan the QR code and have their appearance data collected. The system tracks their movement in real time, and if a visitor attempts to approach the scaffolding area, an alert is immediately triggered, sending a notification to the accompanying personnel and safety officer's app. The accompanying personnel then promptly guide the visitor back to the designated route.

[0066] Risk personnel and equipment management: A steelworker violated regulations twice within 30 days, once by not wearing a safety helmet and once by improperly operating temporary electricity. The system marked him as a medium-risk worker, sending him a safety warning text message every week, and the team's safety officer conducting one-on-one safety training once a week. After four consecutive weeks without violations, the system automatically canceled the medium-risk rating.

[0067] When the inspection robot detects a damaged and overheated cable in the temporary power supply area during emergency inspection mode, it immediately triggers a level-two warning, pushes information to the electrician and safety administrator's APP, and simultaneously shuts down the power in the area. After the electrician arrives and repairs the cable, he uploads photos of the repair via the APP, and the system records the rectification results.

[0068] Within four months of system operation, the number of violations related to high-altitude operations decreased from 18 to 3 per month, the violation rate of material stacking decreased by 65%, and the response time for temporary power outages was shortened from an average of 40 minutes to 10 minutes. The efficiency of inspections by supervisors increased by 40%, and the complaint rate from owners and visitors was 0, achieving coordinated advancement of safety management and construction progress.

[0069] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A construction site security monitoring terminal, characterized in that, It includes a monitoring terminal and a back-end management system, with the monitoring terminal communicating with the back-end management system; the monitoring terminal includes an appearance scanning and attendance machine, multiple site monitoring devices, and at least one inspection robot. The appearance scanning and attendance machine is set up at the entrance of the construction site to record the appearance data of the personnel entering the site and realize the attendance function. The appearance data includes physical characteristics and clothing characteristics, and distinguishes the personnel's job identity. Site monitoring equipment is distributed throughout the construction site, forming a comprehensive monitoring network with no blind spots, used to monitor the operational behavior of construction personnel and the smoke and fire situation in material storage areas; Inspection robots are used to conduct mobile inspections of blind spots in surveillance and areas with potential safety hazards; The back-end management system is used to receive and analyze data from monitoring terminals to achieve feature recognition, alert linkage, and key monitoring. The monitoring terminal is also equipped with edge computing nodes and device linkage gateways, forming a four-layer architecture of terminal acquisition - edge analysis - cloud management - device linkage; the edge computing nodes are deployed locally at the construction site and are responsible for real-time processing of high-definition images and sensor data acquired by the monitoring terminal. The device linkage gateway supports seamless integration with existing access control systems, fire protection systems, and broadcasting systems at the construction site, enabling multi-system collaborative response.

2. The construction site security monitoring terminal according to claim 1, characterized in that: The inspection robot includes a body (1), a drive unit and a data acquisition unit. The body (1) is equipped with a battery and an integrated control box. The integrated control box includes a robot control module, a storage module and a network communication module. The drive unit includes four symmetrically distributed drive wheels (2) and a drive motor corresponding to each drive wheel (2). Each drive motor is controlled individually or synchronously. A viewfinder (8) is provided on the top of the camera body (1). An adjustment mechanism is provided between the viewfinder (8) and the camera body (1). The adjustment mechanism includes a support frame (4), a connector (6), and an electric telescopic rod (7). The support frame (4) is located near the top surface of the camera body (1). Two fixing blocks are installed on the camera body (1) near the bottom of the support frame (4). The bottom of the support frame (4) is located on the opposite side of the two fixing blocks. A locking bolt (5) is provided on the outside of the fixing block and screwed onto the support frame (4) for fixation.

3. The construction site security monitoring terminal according to claim 2, characterized in that: A connector (6) is rotatably mounted on the top of the support frame (4). The connector (6) is L-shaped, with one end mounted on the support frame (4) and the other end fixed to the rear side of the viewfinder (8). An electric telescopic rod (7) is provided in the middle of the support frame (4). The top of the electric telescopic rod (7) is connected to the bottom of the viewfinder (8). The viewfinder (8) can be tilted back and forth by the extension and retraction of the electric telescopic rod (7). At the same time, the rear connector (6) rotates synchronously and assists in supporting the viewfinder (8). The viewfinder (8) includes a depth camera, an infrared thermal imager fill light and a microphone; the inspection robot has a built-in autonomous control system, which can record the construction site and monitor the use of large materials, and also has a call function to connect with the backend. It can send instructions to the inspection robot remotely through the APP and communicate remotely with the personnel in the construction site.

4. The background management system for the construction site security monitoring terminal according to claim 1, characterized in that: The appearance scanning attendance machine includes an image acquisition module, an identity recognition module, an attendance module, and a data transmission module. The image acquisition module collects personnel appearance data, the identity recognition module distinguishes personnel identities by comparing them with a preset functional identity database, the attendance module records attendance data, and the data transmission module synchronizes appearance data, identity information, and attendance data to the back-end management system.

5. The background management system for the construction site security monitoring terminal according to claim 4, characterized in that: The site monitoring equipment is equipped with a high-definition image acquisition unit and a feature analysis unit. The feature analysis unit communicates with the pre-set database of construction personnel operation specifications in the background management system. The construction personnel operation specifications include safety belt fastening standards, welding mask wearing standards, and other safety protection equipment wearing standards and operation behavior standards. When the feature analysis unit detects that the construction personnel have not taken the preset safety operation, the warning mechanism is triggered. The warning mechanism includes on-site lighting warning and remote linkage warning. On-site lighting warning is realized through the warning lights integrated into the site monitoring equipment, and remote linkage warning is realized through the back-end management system to push the warning information to the customized APP of the on-site safety officer and relevant personnel.

6. The background management system for the construction site security monitoring terminal according to claim 5, characterized in that: The back-end management system establishes a personnel identification model based on appearance data to accurately match the identity of the actual operators; for habitual violators who repeatedly violate regulations, they are automatically marked as key monitoring targets, increasing the monitoring frequency and data analysis intensity of their areas; The back-end management system identifies and marks the identities of registered visitors and tracks their movements throughout the process using site monitoring equipment. When a visitor is detected approaching a dangerous area or moving around in a disorderly manner, an alert mechanism is triggered and information is sent to the back-end management system.

7. The background management system for the construction site security monitoring terminal according to claim 1, characterized in that: The site monitoring equipment deployed in the material storage area has a built-in smoke and fire recognition model. It identifies flame and smoke characteristics by collecting images in real time. When smoke and fire are detected, it triggers a high-level warning, including keeping the on-site warning light on, triggering the alarm to sound, and pushing the warning information to the back-end management system and relevant personnel's APP.

8. The background management system for the construction site security monitoring terminal according to claim 1, characterized in that: The back-end management system is equipped with a large-capacity storage module for storing attendance data, monitoring images, inspection data and warning information. The data retention period is no less than 90 days, and it supports multi-dimensional retrieval and traceability. The functional identity database includes preset appearance data and identity information of construction workers, safety officers, and external visitors. It supports adding, modifying, and deleting identity data, and the data transmission process uses an encryption protocol to ensure security.

9. The background management system for the construction site security monitoring terminal according to claim 2, characterized in that: The inspection robot is equipped with a high-definition camera, infrared sensor, path planning module, and communication module; The path planning module supports preset inspection routes or autonomous path planning. High-definition cameras and infrared sensors are used to collect image and temperature data of the inspection area and transmit them to the back-end management system for analysis. When the inspection robot detects violations, abnormal temperatures, or safety hazards, it triggers an alert mechanism in the backend management system via the communication module, and simultaneously pushes relevant data to the safety officer's APP.

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