Shanghai Renwei Electronic Tunnel Personnel Automatic Attendance and Positioning System
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1. System significance
1) By monitoring the number of people entering the hole and the number of people entering the work surface, it can curb over-capacity production.
2) By monitoring the personnel entering the dangerous area, the personnel who strayed into the dangerous area can be detected in time to prevent casualties.
3) Through the monitoring of personnel exiting/entering the tunnel, the overtime work and those who did not exit the tunnel can be found in time, so that timely measures can be taken to prevent accidents.
4) Through the monitoring of the entry operators, exit/entrance and route, we can timely grasp whether the entry staff exit/enter the tunnel according to the regulations, and whether they arrive at the designated operation site according to the regulations, etc.
5) Through the system, it is possible to know the total number of people entering the cave, the distribution area, and the basic situation of the personnel at the time of the accident in time. After the accident, the approximate location of the trapped persons and corpses can be judged through the software’s historical trajectory for timely search, rescue and cleanup.
2. System architecture and program description
Tunnel personnel attendance and positioning system is a combination of tunnel construction personnel attendance, regional positioning, safety early warning, post-disaster first aid, daily management and other functions. It is also a domestic technology-leading, 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.
2.1 System architecture
System network architecture diagram
2.2 Program description
Attendance system: Install 1 set of integrated reader (2.45G+125K) at the entrance of each construction tunnel. Lead out two active antennas, install a coil on the outside and inside of the tunnel entrance, judge the entry and exit of the personnel according to the uploaded data, when the construction personnel enter and exit, and how many operators are in the tunnel can be reflected in the system software , And reflected on the big screen, so that the attendance situation is 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 one at each position that needs to be positionedReader. Install one at a distance of 30-80 meters. The identification area of the reader is determined by the algorithm or the field strength value. The construction personnel only need to wear the system attendance card inside the helmet without actively swiping the card. Within the effective identification range of each card reader, the construction personnel are located and identified according to the identified personnel identification cards, so that the management personnel can grasp the specific conditions of the construction site in time in the monitoring room.
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