First, the technical brief and its advantages
1 radio frequency identification, RFID (Radio Frequency Identification) technology
Also known as radio frequency identification, it is a communication technology that uses radio signals to identify specific targets and read and write related data without the need to identify mechanical or optical contact between the system and a particular target. Can work in a variety of harsh environments.
RFID realizes two-way communication in non-contact mode through wireless radio frequency signals, completes automatic recognition of target objects and read and write operations of related data, and has the advantages of no contact, high precision, anti-interference, fast operation and strong environmental adaptability. It recognizes high-speed moving objects and can recognize multiple labels at the same time, which is quick and easy to operate.
RFID technology has the advantages of absolute anti-counterfeiting, encryption technology, no reuse, full traceability, information control, etc., which can better reduce labor costs and improve work efficiency. RFID technology is the core technology of the Internet of Things, which will bring about tremendous changes in the logistics information industry. Developed countries are relying on the Internet and RFID technology to establish an international Internet of Things system. The era of international Internet of Things is coming soon. RFID tags are an indispensable means of identification for articles entering the international Internet of Things.
2, two-dimensional code technology
The two-dimensional bar code records the data symbol information in a black and white pattern distributed in a plane (two-dimensional direction) by a certain geometric pattern according to a certain rule; the code is used to skillfully use the "0" which constitutes the internal logic foundation of the computer. The concept of "1" bit stream uses several geometric shapes corresponding to binary to represent literal numerical information, and is automatically read by image input device or photoelectric scanning device to realize automatic information processing: it has some commonalities of bar code technology : Each code system has its own specific character set; each character occupies a certain width; it has a certain check function. At the same time, it also has the functions of automatic identification of information on different lines and processing of graphic rotation changes.
According to the explanation provided by the National Internet of Things QR code public service platform, the two-dimensional code is an information technology that records data in a plane by a certain geometric shape, compared to one-dimensional bar code, RFID (radio frequency) and other technologies. The two-dimensional code can carry a large amount of information in a small area, the printing and reading cost is lower, the security and confidentiality are stronger, the recognition efficiency is higher, and the magic of being able to "passively take the initiative".
Need light source assisted, fixed, passive scanning
Second, the specific application
1. RFDI RF technology is applied to digital urban management
At present, the positioning of component events in digital urban management is mainly through urban inspection personnel holding PDA to manually check various components and events in the 10,000-meter grid, and can use PDA camera combined with GPS positioning for on-site collection and reporting, and the accuracy of its identification is artificial. Greater impact. In addition to city appearance and sanitation, urban management includes monitoring and supervising important municipal transportation facilities, gas pipelines, water supply and drainage facilities and water quality related to urban safe operation, building urban disaster reduction information systems, establishing emergency linkage command systems, and establishing an oriented Urban management government service system, etc., are all further construction contents of digital urban management.
In the process of further construction and development of digital urban management, how to accurately identify the monitoring objects, how to solve the data collection and transmission under special circumstances is the end of the digital urban management monitoring network and the key data source, and RFID technology is the latest solution to these problems.
RFID (radio frequency identification) technology, also known as electronic tag technology, is a specific application of radio technology in the field of automatic device identification. The electronic tag realizes two-way communication in the non-contact mode through the wireless radio frequency signal, and completes the automatic recognition of the target object and the reading and writing operation of related data, and has the advantages of no contact, high precision, anti-interference, quick operation and strong environmental adaptability.
The electronic tag has a global unique identification code that uniquely represents the object itself and is the key to connecting the real physical world with the virtual information world. By using these technical features of RFID and the management of the corresponding information systems, the role of digital urban management can be greatly enhanced, and the management of urban components can be better realized, and event processing can be facilitated.
2. Application of QR code in smart city
(1) On November 21, 2017, the 16th Annual Conference of Urban Smart Card Innovation and Development was held in Chengmai, Hainan. The meeting was officially released by the China Urban Public Transport Association and the IC Card Application Service Center of the Ministry of Housing and Urban-Rural Development. "Technical Requirements for Smart City QR Code Application" (Guidelines) prepared by relevant units. In the next step, the guidelines will rise to group standards or national standards.
(2) Model indexing tool. People who are at the construction site all the year round have a strong demand for mobile office due to restrictions on office conditions. By scanning the two-dimensional code to read the lightweight BIM model, it supports three ports of web, client and mobile, which can meet the application needs of project personnel in different scenarios such as office, business trip or construction site.
(3) Promotional function. Applicable to a wide range of network forwarding, dissemination of BIM lightweight models, three-dimensional effect models, panoramic models, real-world three-dimensional model demos and other models published on the Internet, can achieve a wider range of publicity.
Third, the conclusion
The QR code is used to view the lightweight model of the design drawings and to view the source and destination of the components. It is just a URL indexing technology with low cost and convenient forwarding and dissemination.
However, it is not suitable for the operation and maintenance stage. For example, in the place where the parts and accessories are not easy to sweep, in the subway shield section, the underground pipe gallery and other places where the lighting is not good, it is not suitable for moving targets, and the limitation is too large.
In the future complex building operation and maintenance management and data city (smart urban management), RFDI RF technology has an irreplaceable advantage. With the advent of the mobile Internet and 5G era, the handheld identification manager (remote card reader) slid indoors. The vehicle manager can patrol the street for a full circle of remote and indoor maintenance information without access to indoor and outdoor components.
Pneumatic Oil Drains,Waste Oil Drain Tank,Portable Oil Lift Drain,Self Evacuating Oil Drain
WUQIANG HONGMA TOOLS MANUFACTURE CO., LTD , https://www.hmrapairtools.com