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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 management is 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 leads 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. Beijing Haotian Tongtai Technology Co., Ltd. puts forward the “solution of tunnel personnel attendance and positioning system” in response to the above situation, which provides a brand-new safety management concept and strong guarantee for the safe construction of the tunnel.
1.2 System introduction
Haotian Technology Smart Tunnel Staff Attendance and Positioning System is a combination of tunnel construction staff attendance, regional positioning, safety early warning, post-disaster first aid, daily management and other functions. It is also a domestically leading technology, stable operation, and professionally designed tunnel construction site monitoring system. It enables management personnel to grasp the distribution status of personnel and equipment on the construction site and the movement trajectory of each personnel and equipment at any time, facilitating 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.
Chapter 2 System Composition
2.1 System composition
2.2 Working principle
Hardware composition: switches, servers, IoT wireless nodes, IoT directional monitors, IoT network repeaters, multi-frequency RFID tags, LED screens, etc.
2.2.1 IoT wireless nodes
The wireless node of the Internet of Things is a 360° non-dead angle monitoring RFID wireless signal with a distance of up to 50 meters, which is used to achieve full coverage of the signal in the area. The wireless routing node receives the signal actively transmitted by the terminal tag, and wirelessly transmits the signal to the IoT network repeater.
2.2.2 IoT Orientation Monitor
The IoT directional monitor is a device for directional monitoring of RFID wireless signals. It forms a fan-shaped deflection angle of 20°-30° in a specific area to realize the delimitation of access to a specific area. The IOT directional monitor receives the signal actively transmitted by the terminal tag, and wirelessly transmits the signal to the IOT network repeater.
2.2.3 IoT network repeater
The IoT network repeater is to receive the wireless signals of the IoT directional monitor and the IoT wireless node in 360°, and pass the received signals of the IoT directional monitor and the IoT wireless node through the RJ45 or 485 port. The switch uploads to the server. Each IoT network repeater can receive signals actively transmitted by six IoT directional monitors or IoT wireless nodes.
Chapter 3 System Features
3.1 Stable performance and high recognition rate
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 card reader installed nearby.
Long recognition distance (0-100 meters): It can reach a stable distance of 50M in the tunnel, and the information sent by the tag card within this range will be read.
Very high anti-collision: each detection point can simultaneously identify up to 500 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 Simple installation and strong promotion
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 difficulties and problems caused by a single transmission method. bottleneck.
3.3 High stability and strong security
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 Convenient operation and reuse
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 queries and powerful reports
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)
It can be known 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 Function
4.1 Attendance management function
Information entry management: Information entry management includes records of basic staff information, such as: name, gender, date of birth, department, position, photo, and whether there is fault, etc.
Personnel entry and exit tunnel management: According to the time when the card reader reads the tag, the system can record and record the staff’s commuting time.
Personnel information query: Personnel information query includes basic personnel information query and working hours query.
Through the IoT orientation monitor, it can be judged that the construction personnel are in and out of records at any time;
Employee Attendance Inquiry: The attendance status of personnel can be inquired by department and various specified conditions, such as: number, name, shift, type of work, department and other query conditions; it can be automatically sorted according to any conditions;
Cadre Attendance Inquiry: Query and display the attendance status of all cadres on the day;
According to user requirements, statistics and reports can be output by day, week, month, and year.
4.2 Positioning management function
The label can be reused: the label information can be rewritten and the service life is up to 10 years;
The label can alarm when the label falls off: the temperature measurement label can detect the body temperature of the person. When the person deliberately or unintentionally removes the label, the temperature measurement label cannot detect the normal human body temperature, and the system will automatically alarm;
Recognition distance can be adjusted: Zigbee’s card reader has a recognition distance of up to 1500M, and each reader can read 200 tags at the same time, which saves users a lot of cost. According to customer requirements, it can be adjusted to the ideal Within the recognition distance;
It can inquire at any time and display the identity, quantity and distribution of personnel and equipment in a certain area;
Query the current actual location and activity trajectory of one or more personnel and equipment;
Record a series of information such as the arrival/departure time and total working hours of relevant personnel and equipment at any location, so as to supervise and confirm whether important inspection personnel (such as: safety inspection personnel) conduct on-site inspections on time and on-site, or perform various items. The detection and processing of data fundamentally eliminates related accidents caused by human factors.
4.3 Setting the alarm function
1.1.1 Forbidden zone alarm function
Without authorization, outsiders and locals enter dangerous areas and other prohibited areas, the system will automatically alarm to remind the manager to take timely and effective measures to prevent danger.
1.1.2 Area alarm function
Set the alarm function in the specific area, and set the authority for the label card. For example, when blasting in a tunnel, set the blasting work surface as a guard area. If unauthorized personnel and equipment enter the guard area, the system will automatically alarm and display the identity of the personnel and equipment entering the guard area, and take corresponding measures in time , And cancel the alarm setting after the blasting is over.
1.1.3 Query Statistics
Construction personnel query: You can customize the combination of conditions to query the current area of the construction personnel, the detention time and the leader of the shift into the tunnel.
Worker distribution query: query the distribution of construction personnel 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 personnel.
Unreached area query: used to inspect and assess the situation of relevant responsible persons and follow-ups, and to inquire whether the special type of work has reached all areas of its work scope. Click on the relevant status to get the detailed records of the arriving personnel and work.
Statistics of construction personnel: The number of construction personnel entering and exiting the tunnel can be counted according to the date.
Regional population statistics: You can arbitrarily set up and manage related construction areas, and automatically perform regional population statistics.
1.1.4 First aid information after a disaster
Once a safety accident occurs, the control host can immediately display information such as the number of personnel, personnel information, and personnel location at the accident site, which greatly improves the rescue efficiency and rescue effect.
1.1.5 Information networking function
By setting up a WEB server, information sharing can be achieved by browsing web pages, and the client does not need to add any additional software. (The computer in the monitoring room is required to be able to access the Internet)
1.1.6 Other functions
If the above functions cannot meet your requirements, we can tailor the functions for you.
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