Safety management (monitoring) system for construction personnel of railway tunnels, highway tunnels, and urban subways
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Chapter 1 Overview
1.1 System background
With the rapid development of the country’s economy, my country’s tunnel construction is changing with each passing day. As urban subways, railway tunnels, and highway tunnels have improved route technical indicators, shortened distances and travel time, and increased operational efficiency, the country is constantly increasing the construction of tunnels; however, the construction cost of tunnels is high and the operation and management are relatively complicated. Therefore, all places attach great importance to the construction of tunnels and dare not take it lightly.
The current remote information management system is often only the management of administrative and technical documents, and cannot obtain construction information in real time, let alone a comprehensive, timely and accurate grasp of the information of the construction site and construction personnel, which has led to many accidents. . For this reason, governments at all levels attach great importance to the safety of production in engineering construction and adopt a series of measures to continuously strengthen safety in production. How to change the current lagging management mode of safety supervision during tunnel construction and realize the modernization, informatization, and intelligence of management has become an important topic for managers to study.
Therefore, advanced management methods such as disaster prevention, accident rescue, and information management will be an inevitable choice for the safe construction of tunnels. In response to the above situation, the company puts forward the “Tunnel Construction Personnel Safety Management (Monitoring) System”, which provides a brand-new safety management concept and strong guarantee for the safe construction of the tunnel.
1.2 System introduction
The tunnel construction personnel safety management (monitoring) system integrates the functions of tunnel construction personnel attendance, regional positioning, video surveillance, LED screen display, safety warning, alarm for foreign personnel without card, post-disaster first aid, daily management and other functions. It is also a domestic technology leader. Stable operation and professional design of tunnel construction site monitoring system. With the help of this system, management personnel can easily and quickly grasp the distribution status of on-site construction personnel, equipment and the movement trajectory of each personnel and equipment, which facilitates more reasonable scheduling management and safety monitoring management. When an accident occurs, rescuers can quickly understand the location of relevant personnel based on the data and graphics provided by the system, and take corresponding rescue measures in time to improve the efficiency of emergency rescue work. The realization of this scientific and technological achievement has promoted the safe production and daily management of tunnel construction to a new level.
The system can not only realize attendance or positioning alone, but also realize two functions of attendance and positioning at the same time. Moreover, we have designed two versions of the system software, an installation version and a network version, which can be used for on-site monitoring and remote monitoring, which greatly meets the different needs of different users.
Chapter 2 System Design
The safety management (monitoring) system of tunnel construction personnel mainly includes: video monitoring system, LED large-screen display system, alarm system for foreign personnel without card, and attendance positioning system.
2.1 Video surveillance system
The wireless network video monitoring system includes front-end video capture equipment, network video codec, WiFi wireless transmission equipment, and back-end monitoring and receiving client software. The former is installed at the main monitoring points of the tunnel to perform signal collection and transmission, and the latter software is mainly installed on the computer in the monitoring room. Monitoring and management. Such as: video, pan-tilt, zoom, recording, voice, alarm linkage and other functions, users with management rights can also set, download, and perform real-time on-demand video recording at any point; the system can also be monitored through a PC browser .
It can be seen that the wireless network monitoring system uses surveillance cameras to monitor the various video points of the tunnel construction site in real time for 24 hours. For some key video points, the video motion detection function and alarm function can be activated. The system automatically recognizes, triggers, and records according to the image movement (there is a pre-recording mechanism, and the pre-recording time can be advanced by more than 20 seconds); at the same time, the system will image, Real-time data such as sound and alarm are transmitted to the computer desktop of the monitoring room. The manager can freely switch the video of any front-end monitoring point through local monitoring, remote IE monitoring, WEB web client and other methods, and can intuitively understand and grasp the construction video monitoring points The real-time situation, so as to achieve timely and accurate supervision of it anytime, anywhere.
The video capture and transmission equipment in this system mainly uses spherical pan-tilt cameras.
Through the video monitoring system, you can grasp the construction situation in the tunnel in time in the monitoring room. In addition, even if you are not on the construction site, you can realize real-time monitoring and management of the site through remote monitoring, and cooperate with the video capture function.
2.2 LED large screen display system
The large LED screen is installed near the tunnel entrance to display the information of the construction personnel in real time, so that the management is advanced and transparent. The displayed content includes: tag number, name, time, total number of people, etc., so that leaders and supervisors do not need to enter the tunnel or check the computer in the monitoring room to know the situation of the tunnel construction personnel in time. With the LED large-screen display system, not only can the information of the construction personnel in the various areas of the cave be visualized, intuitively, and clearly reflected. Moreover, various welcome slogans and promotional slogans can also be displayed on the big screen when the tunnel is opened; in normal times, the construction staff can be reminded to pay attention to construction safety through the big screen, and can be warm in time when there are severe weather such as high temperature and frost. hint. These can fully reflect the humanization, modernization and scientific management of the tunnel construction project department.
Recommended size of LED display: 1.92*1.28㎡, different sizes can also be customized according to user needs.
2.3 Alarm system for outsiders without card
The system has two implementation options:
1. Highway tunnels and railway tunnels are suitable for using card readers with alarm function to realize the alarm function for people without a card. The card reader has an infrared alarm function. When outsiders or construction workers without a card enter the tunnel alone, the card reader will trigger an alarm after being sensed by infrared, so as to notify the administrator in time. However, when the person without a card and the person carrying the card enter together, the card reader will not alarm.
Special for highway tunnels and railway tunnels
2. The safety management system for urban subway construction personnel is suitable for barrier-free passage systems. The barrier-free passage system has the following energy supply characteristics:
(1) Support remote automatic card swiping
The construction personnel only need to put the identification card on the inside of the helmet, without actively swiping the card, and pass it naturally, which is fast and convenient.
(2) Illegal user alarm function
When outsiders or construction workers without a card pass through the passage, the passage will give out an audible and visual alarm to remind the security personnel, and at the same time, it will capture the image data of the passers without a card. Effectively prevent the entry of illegal personnel. If the person without the card enters the channel together with the person with the card, the system will not alarm.
(3) 24-hour surveillance video linkage function
When someone passes through, the manager’s computer will immediately display the corresponding information; the system supports remote video monitoring function, and the leader can directly monitor the picture of any camera in the office.
(4) Remote data and video real-time monitoring function
The system can monitor and record the people passing through the channel for 24 hours, and it also has the function of video capture. Once there is a problem, you can easily locate the corresponding responsible person.
2.4 Attendance and positioning system
Attendance system: Two card readers are installed in each construction tunnel. One card reader is installed at the entrance of the tunnel entrance, and the other card reader is installed 200 meters inward from the entrance of the tunnel. According to the sequence of the card read by the card reader, the entry and exit of the construction personnel can be judged, and when Entering, when leaving, and how many operators are in the cave can be reflected in the system software and reflected on the large screen, making the attendance status clear at a glance. The construction personnel wear the system attendance card on the inside of the helmet, which can realize automatic attendance without actively swiping the card, which is convenient, labor-saving and highly accurate.
Positioning system: Install 4 card readers in each construction tunnel. Install a card reader at the entrance of the tunnel entrance, install one at a distance of 300 meters from the entrance of the tunnel, and install another unit at a distance of 600 meters from the entrance of the tunnel (to install the positioning system, the length of the tunnel excavation must be ≧600 M), the other one needs to be installed on the trolley to perform real-time identification and positioning along with the trolley operation. At the same time, a camera must be installed on the trolley to count the number of workers on the work surface in real time and cooperate with camera capture. The construction personnel only need to wear the system time attendance card inside the helmet without actively swiping the card. Within the effective recognition range of each card reader, the construction personnel will be located and identified according to the situation of the recognized personnel identification card, so that the management The personnel can grasp the specific situation of the construction site in time in the monitoring room.
Chapter 3 System Features
3.1 Excellent performance
High recognition reliability: 100% front-end recognition rate. As long as the construction personnel wear the 2.4G active radio frequency card correctly (unless it is broken), it can be read by a nearby card reader.
Long recognition distance (0-50 meters): A stable distance of 50R can be reached in the tunnel, and the information sent by the tag card within this range will be read.
Extremely high anti-collision: each detection point can simultaneously identify up to 50 construction personnel’s information.
High recognition stability (error rate is less than one hundred thousandths), truly achieve no errors and no missing cards.
Fast recognition speed: the fastest recognition speed can reach 200 km/h, that is, the dynamic tag card can also be recognized.
Two-way alarm function: the construction personnel can call the monitoring center through the label button; the monitoring center can also send information to the label. (The function of two-way card, one-way card does not have this function)
3.2 Convenient and wide application
In line with the existing network conditions of the tunnel, it can provide multiple tunnel-to-tunnel transmission methods based on optical fiber, Ethernet, communication cable, etc., which are highly adaptable and do not require high on-site environment, avoiding implementation problems caused by a single transmission method. bottleneck.
3.3 High security and stability
With safe explosion-proof, dustproof and waterproof performance
High anti-interference, no special requirements for tunnel interference source and surrounding environment, strong environmental adaptability
The internal circuit is highly integrated, the device failure rate is minimized, and the operation is reliable
Using active identification card, no electromagnetic pollution, maintenance-free, safe to use
3.4 Simple and convenient operation
The software has a full Chinese menu with a good operation interface
Integrated structure design of wireless monitoring substation, convenient and quick installation
The built-in battery of the identification card, ultra-low power consumption, no external miner’s lamp power supply, no need to charge
Two-way card can replace the battery
3.5 Rich query and report functions
Query and report output, printing functions are simple and easy to operate
Can query the attendance information of construction personnel, departments and cadres
Can query the construction personnel’s movement trajectory
Various information reports can be output as required (such as: tunnel entry time report, personal attendance daily report, construction worker attendance monthly report, department attendance monthly report, etc.)
The real-time situation of the tunnel can be viewed remotely on any computer with Internet access, without the need to go to the scene. (Online version software function)
You can know at any time how many people there are in the cave, who are these people, and can be displayed on the LED display at the same time. The specific display content depends on the size of the display.
Chapter 4 System Software Functions
The system software has two versions, “installation version” and “network version”. The so-called installation version, that is, the stand-alone version, is the software that is limited to one computer in the control room of the construction site; the so-called online version is wherever there is a network. , Can log in to the software interface, and use the software’s positioning and attendance functions for remote monitoring (premise: the computer in the construction site control room must be networked).
The software functions are as follows:
4.1 Installed version software
4.1.1 Login function
4.1.2 Entity diagram
4.1.3 Query attendance data
4.1.4 Query activity track
4.1.5 Staff management
4.1.6 Job management
4.2 Online software
4.2.1 Login function
4.2.2 Entity Map of Tunnel Location
4.2.3 Positioning information display
4.2.4 Attendance management
4.2.5 Location tracking
4.2.6 Query of historical data
4.2.7 Query of employee information
4.2.8 Staff management
4.2.9 Base station management (card reader)
4.2.10 Department Management
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