“CASAGRAS†is a project plan supported by the European Union, mainly supporting and coordinating global RFID-related activities and standardization. In addition to Europe, there are also experts from China, Japan, Korea and the United States. Since the document has taken into account international regulations, standards and other conditions for implementing the Internet of Things and the role of RFID in it, it can serve as a reference for countries to develop applications for IoT technology.
ForewordA few days ago, the author has stated the concept of the Internet of Things (IoT) and its development, but it is not enough for the technical description involved, and it is necessary to further supplement this information. However, personal knowledge is limited, and the data on hand is also incomplete. So I searched the database of relevant international standards development units, hoping to have a more systematic understanding of IoT technology, and also share with readers.
CASAGRAS is a project program supported by the European Union, mainly supporting and coordinating global RFID-related activities and standardization, which is called "CoordinaTIon And Support AcTIon for Global RFID-related AcTIviTIes and Standardization". In addition to Europe, there are also experts from China, Japan, South Korea and the United States. The final report "RFID and the inclusive models for the internet of things" was released in September 2009. Since the document has taken into account international regulations and standards and other conditions for implementing the Internet of Things and the role of RFID in it, in addition to helping the European Commission develop the IoT strategy and implementation path; in fact, the report can also be used as References for the development of IoT technology applications in various countries.
The following section only excerpts the technical framework as the beginning of IoT technology awareness. If the reader wants to read the whole picture in real time, he can search for the website by "CASAGRAS" and get a complete report.
Overview of the IoT Technology FrameworkAfter understanding the concept of IoT and its interface technology or method with the physical world, the program objectives have been revised, not just RFID technology, but also other identification, location, communication and data capture technologies.
There are three hardware technologies and associated layers that can be used as the basis for implementing the Internet of Things:
Identification and data capture techniques form a physical interface layer;
Fixed, mobile, wireless, and wired communication transmission technologies that support data and voice transmission with associated interfaces;
Network technologies (combined with communication transport technologies) facilitate the clustering of objects supported by applications and services.
In addition, there are software, intermediate software components, and associated communication protocols (the protocol provides a way to link and drive hardware), plus service lookup support, which constitutes a complete operating system or system. The CASAGRAS framework has been cited by relevant European organizations in EU policy documents, such as the “European Policy Outlook RFID†document, which suggests the inclusion of “Processing Capability†as a key factor in illustrating the IoT model.
CASAGRAS three modes:Read only the RFID data carrier mode;
RFID-based add-on objects that link data patterns (obviously, with read and write capabilities and additional data carrying capabilities);
Value-added objects based on RFID and other leading edge technologies (Edge 1), linking data patterns, obviously, include perceptual data capture, extended data carrying capabilities, and other attributes such as location or location capabilities.
Most of the basic models of the Internet of Things have data carriers, which are essentially passive RFID tags that carry unique identifiers. Each tag has the ability to be queried and responsive via a wireless channel. However, the volume label itself does not have the ability to process data, and there is no communication facility between the labels.
The application uses these data carriers, relying on the "identification code" as the addressing mode to store the information attached to the item remotely. The tag is interrogated wirelessly with the tag communication method by the reader, interrogator or gateway device; further communicates with the information management system supporting the application to transmit data (the "interrogator" is used in this report) The words are collectively referred to as readers, base stations or gateways). The interrogator may be a fixed or mobile device, and the communication link between the interrogator device and the host may be wired or wireless, depending on the device type, requiring different interfaces and communication protocols. The interrogator may be able to perform some specific processing functions and have the ability to communicate and network with other interrogators or gateway devices. It must be known that the active RFID device can perform two functions, one is the responsive label function; in another environment, the function of the interrogator is to collect or organize the data from other RFID devices in the range. The expansion of the ground can greatly enhance the implementation of IoT.
The host system controls the needs of the application, uses the item coding scheme to motivate the support of specific items, and drives and transmits appropriate responses, including those that result in some entity drivers. The host system is repeatedly connected via wired or wireless transmission channels and networks, and further communication is required according to the application. The system networking capability may include the Internet and the global information network.
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