RFID technology enables efficient operation of smart construction sites
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With the rapid development of urban construction, the management and control of construction sites is constantly optimized. How to implement construction requirements on construction sites efficiently and informatized has become the focus of attention. Information-based construction site management needs to be combined with modern management technology to realize automated, real-time, and accurate collection of construction site personnel attendance, and achieve more scientific management of the construction site. RFID technology has a long reading distance, smaller tags, lower cost, fast recognition speed, and strong multi-tag recognition capabilities. It saves a lot of manpower and time, improves operational efficiency, reduces operating costs, and allows smart construction sites to play an important role .
RFID technology is very suitable for the automated attendance management system of construction site personnel, to realize the automation, real-time and accurate management of personnel attendance. The basic feature of radio frequency identification technology is to use radio technology to identify stationary or moving objects, to determine the identity of the object to be identified, and to extract the characteristic information (or identification information) of the object to be identified.
Install UHF RFID card readers in the entry and exit passages of the construction site, paste RFID passive electronic tags in the helmets of construction workers, and automatically complete sign-in or sign-out when entering and exiting the passage wearing the helmet. The main software and hardware of the system include: RFID card reader, RFID desktop card issuer, several RFID electronic tags, 1 set of management software, and several auxiliary materials such as network cables. UHF RFID technology has the advantages of being able to read multiple tags at one time, strong penetrability, multiple read and write, large data memory capacity, low cost of passive electronic tags, small size, convenient use, high reliability and long life, etc. Features.
Label installation
In this system, workers entering and leaving the construction site must wear safety helmets. Therefore, safety helmets can be used as a medium in this system. By binding the electronic tags with the worker’s identity information to the safety helmets, workers wear safety helmets in and out of the equipment. The access control channel with RFID identification system can complete the identification of attendance personnel.
Access control
Install RFID identification equipment at the gates entering and exiting the construction site. When workers wearing safety helmets pass by, the electronic tags bound on the safety helmets are identified to realize the identification of attendance personnel.
In the design of this system, the key lies in the simultaneous recognition of multiple people entering and exiting at the access control channel, especially for wider gates. During the peak attendance hours, the flow of people is large, and the device needs to have the ability to not miss multiple tags.
display system
The LED display shows the real-time number of people entering and exiting each type of work (if specific personnel information is written, the personnel information can be displayed). At the same time, managers can conveniently view the real-time attendance status of personnel through the APP or WeChat official account.
System architecture flow
The construction worker and the engineering party sign a labor service contract. The engineering party conducts necessary pre-job training for the workers, collects photos of personnel, establishes files (names, ID numbers, electronic photos, etc.) in the reader management system, and assigns RFID tags. Paste RFID passive electronic tags in the helmets of construction workers. When the operator wears a helmet when entering and exiting the channel, the fixed card reader automatically recognizes the electronic tag, and completes the sign-in or sign-out.
The traditional construction site management mode mainly relies on the guard or swiping card for manual recording. Since the personnel on the construction site come in and out more frequently, it is difficult to manage and control. This is likely to cause errors in registration, inaccuracy, and difficult inquiries. It is relatively difficult to manage worksite personnel quickly and accurately. In the helmets of the workers on the construction site with RFID electronic tags, as long as the RFID reader device is installed at the entrance and exit of the construction site, the personnel information on the construction site is bound by the RFID tag issuer, so that the workers wearing the helmet can be automatically obtained when they pass the gate The information in the helmet greatly improves the passing rate and the high efficiency of attendance.
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