RFID technology enables efficient operation of smart construction sites

With the rapid development of urban construction, the management and control of construction sites are also constantly optimized. How to implement the construction requirements of construction sites efficiently and information-based has become the focus of attention. Information-based construction site management needs to be combined with modern management technology to achieve automated, real-time and accurate collection of construction site personnel's attendance, so as to achieve more scientific management of the construction site. RFID technology has many features such as long reading distance, smaller tags, lower cost, fast recognition speed, strong multi-tag recognition ability, etc. 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 automated attendance management systems for construction site personnel to achieve automated, 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 achieve the purpose of determining the identity of the object to be identified and extracting the characteristic information (or identification information) of the object to be identified.

Install ultra-high frequency RFID Card readers in the entry and exit passages of the construction site, and attach RFID passive electronic tags to construction workers' safety helmets to automatically complete sign-in or check-out when wearing safety helmets to enter and exit the passage. The main software and hardware of the system include: RFID card Reader, RFID desktop card issuer, several RFID electronic tags, a set of management software, several network cables and other auxiliary materials. UHF RFID technology has the characteristics of being able to read multiple tags at one time, strong penetration, multiple reading and writing, large data memory capacity, low cost of passive electronic tags, small size, easy to use, high reliability and lifespan, etc. Features.

Tag installation

In this system, workers entering and exiting the construction site must wear safety helmets. Therefore, the safety helmet can be used as a medium in this system. By binding the electronic tag with the worker's identity information to the safety helmet, workers wearing safety helmets can enter and exit the construction site. The Access Control channel with RFID identification system can complete the identification of attendance personnel.

Access control channel

Install RFID identification equipment at the gate entering and exiting the construction site. When workers wearing safety helmets pass by, the identity of the attendance personnel can be identified by identifying the electronic tags bound to the safety helmets.

In the design of this system, the key is to identify multiple people entering and exiting at the access control channel at the same time. Especially for wider gates, during peak attendance times, the flow of people is large, and the equipment must have the ability to read multiple tags without missing a beat.

display system

The LED display screen displays 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 check the real-time personnel attendance status through the APP or WeChat public account.

System architecture process

The construction workers and the Engineering party sign a labor contract, and the engineering party conducts necessary pre-job training for the workers, collects photos of personnel, creates Files (names, ID numbers, electronic photos, etc.) in the reader management system, distributes RFID tags, and Construction workers attach RFID passive electronic tags to their helmets. When workers wear safety helmets and enter and exit the channel, the fixed card reader automatically recognizes the electronic tag and completes sign-in or sign-out.

The traditional construction site management model mainly relies on manual recording by doormen or card swiping. Since construction site personnel come and go frequently, it is difficult to manage and control. This can easily lead to errors and inaccuracies in the registration, making it more difficult to query. It is relatively difficult to quickly and accurately grasp the attendance time of construction site personnel. RFID electronic tags are placed in the safety helmets of construction site employees. As long as an RFID Reader device is installed at the entrance and exit of the construction site, the personnel information of the construction site is bound through the RFID tag issuer, so that workers can automatically obtain the information when they wear safety helmets and pass through the gate. The information inside the safety helmet greatly improves the pass rate and attendance efficiency.