Wuhan 2.4G long-distance tunnel personnel automatic attendance positioning system

.Remote Tunnel Personnel Automatic Attendance Positioning 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 driving times, and improved operational efficiency. In addition, tunnel construction costs are high and operation management is relatively complex. Therefore, various places attach great importance to the construction of tunnels.
The current remote information management system often only manages administrative and technical documents, but cannot obtain construction information in real time, let alone have a comprehensive, timely and accurate grasp of the construction party's information and construction personnel. This leads to many accidents. For this reason, governments at all levels attach great importance to safety production issues in engineering construction and adopt a series of measures to continuously strengthen safety production work. How to change the current backward management model of tunnel construction process safety management and realize the modernization, informatization and intelligence of management has become an important topic for managers to study.
Therefore, using advanced management methods such as disaster prevention, accident rescue, and electronic informatization is an inevitable choice for tunnel construction safety management. In response to the above situation, the solution of tunnel personnel attendance and positioning system is proposed, which provides a new safety management concept for tunnel construction safety management.
2. Overview of tunnel personnel attendance and positioning system
The tunnel personnel attendance and positioning system integrates tunnel construction personnel attendance, regional positioning, safety warning, post-disaster first aid, daily management and other functions. It is also the leading technology and operation in China. Stable and professionally designed tunnel construction site monitoring system. This enables managers to keep track of the distribution of personnel and equipment at the construction site and the movement trajectory of each person and equipment, facilitating more reasonable scheduling and management. When an accident occurs, rescuers can also quickly understand the location of relevant personnel based on the data and graphics provided by the tunnel construction personnel and equipment position monitoring safety management system, and take corresponding rescue measures in a timely manner to improve the efficiency of emergency rescue work. The realization of this scientific and technological achievement will provide a strong guarantee for the safe production and daily management of tunnel construction to reach a new level.
3. Composition of the tunnel personnel attendance and positioning system
The tunnel personnel attendance and positioning management system is divided into the outside of the tunnel and the inside of the tunnel
Outside the tunnel: outdoor monochrome display screen, RR converter, R transmission interface, One computer, signal lightning protection barrier, uniqueness detection management station
In the tunnel: controller, explosion-proof card reader, security identification card, R repeater, explosion-proof uninterruptible power supply, cables, can be customized according to user requirements Select the transmission method and transmission equipment according to the actual network conditions
4. System characteristics
Excellent performance
High recognition reliability, % front-end recognition rate Recognition distance (meters) Extremely high anti-collision (Each detection point can identify up to one person at the same time), high recognition stability (the bit error rate is less than one in 100,000), and truly achieves no error code, no missing cards and fast recognition speed (the fastest can reach kilometers per hour) Recognition speed) has a wide range of applications
In line with the existing network conditions of the tunnel, it can provide a variety of transmission methods inside and outside the tunnel based on optical fiber, Ethernet, communication cables, etc. It has strong adaptability and avoids implementation problems caused by a single transmission method. Difficulty.
High safety and stability
Safe explosion-proof, dust-proof and waterproof properties
High anti-interference, no special requirements for tunnel interference sources and surrounding environment, strong environmental adaptability
The internal circuit is highly integrated, the device failure rate is minimized, and the operation is reliable
It uses an active identification card, no electromagnetic pollution, maintenance-free, and safe to use
Simple and convenient operation
Direct import The original map of the mining area is easy to operate. There is no need to redraw the mining area map to ensure that the displayed graphics are consistent with the customer's original map. The software has a full Chinese menu and a good operating interface. The integrated structural design of the wireless monitoring substation eliminates the need for external antennas or ground sensing coils. The identification card has a built-in battery, ultra-low power consumption, and does not require an external miner's lamp power supply or charging. Rich query and report functions
The query and report output and printing functions are simple and easy to operate, and can be used to check the attendance of construction workers, departments and cadres. Information query can query the movement trajectories of construction workers and output various information reports as required (such as: tunnel entry time report, personal attendance daily report, construction worker attendance monthly report, department attendance monthly report, etc.)
5. Working Principle
In the area of the tunnel where personnel tracking is required, a controller is installed. It maintains communication with the ground center station through the R data bus, uses a three-way junction box at the joint, and is powered by an external flameproof uninterruptible power supply.
The explosion-proof card reader is connected to its own controller through the R bus, and the power supply is powered locally.
Personnel entering the tunnel wear a security identification card (the card is installed on the worker's protective hat or worn on a key chain). The security identification card worn continuously emits a radio signal. This wireless signal is Coded, the code of each identification card is unique.
The explosion-proof card reader receives the signal sent by the security identification card within the effective measurement range, and sends it to the data monitoring substation through the R interface, and then the data monitoring substation sends it to the outside of the tunnel for recording and display.
The card reader at the entrance and exit of the tunnel receives the signal sent by the security identification card and sends it to the data monitoring substation through the R interface, thereby realizing the attendance of the staff.
The ground center station determines the specific information of the security identification card (such as who is it, which location, specific time) based on the installed mine attendance and positioning management software, and can display the information on the large screen of the control center or on the computer screen and make a backup.
6. System functions
Dynamic display function
★ Query and display the identity, quantity and distribution of personnel and equipment in a certain area at any time.
★ Query the current actual location and activity track of one or more people and equipment.
★ Record a series of information such as arrival and departure time and total working time of relevant personnel and equipment at any location, which can supervise and implement whether important inspection personnel (such as safety inspection personnel) conduct on-site inspections on time and on site. Or carry out detection and processing of various data to fundamentally eliminate related accidents caused by human factors.
, Multi-point sharing of information
The system center station and network terminals can be networked and run in LAN mode, so that all terminals on the network can realize multi-point sharing of information within the scope of use authority, allowing multiple departments and leaders to work in different locations at the same time. Share monitoring information, system comprehensive analysis information, and query various data reports.
, Set alarm function
The system can set warning areas according to the needs of construction management. For example: when blasting in a tunnel, set the blasting operation surface as a warning area. If unauthorized personnel and equipment enter the warning area, the system will automatically alarm and display the identity of the personnel and equipment entering the warning area. The alarm will be released after the blasting is completed. set up.
, Query statistics
★ Construction personnel query: You can query the construction personnel's current area, residence time, and team leader's entry into the tunnel according to custom combination conditions.
★ Worker distribution query: Query the distribution of construction workers in each area of the tunnel, so that managers can easily know the number of workers in a specific area. Click on the corresponding area to get detailed information about the relevant person.
★ Unreached area query: Used to supervise and assess the follow-up status of relevant responsible persons, and check whether special types of work have reached all areas within their work scope. Click on the relevant status to get detailed records of arrivals and work.
★ Statistics of construction workers: The number of construction workers entering and exiting the tunnel can be counted based on the date.
★ Regional headcount statistics: You can set and manage relevant construction areas arbitrarily, and automatically conduct regional headcount statistics
and attendance management
★ Department attendance query: You can conduct personnel statistics by department and various specified conditions. Attendance status query, such as: number, name, shift, type of work, department and other query conditions can be automatically sorted according to any conditions
★ Employee attendance query: personnel attendance status query can be carried out according to various specified conditions, such as: number, Query conditions such as name, shift, type of work, department, etc. can be automatically sorted according to any conditions
★ Cadre attendance query: query and display the attendance status of all cadres on the day
, post-disaster first aid information
In case of safety In the event of an accident, the control host can immediately display the number of personnel, personnel information, personnel location and other information at the accident site, greatly improving the rescue efficiency and rescue effect.