What are the Internet of Things technologies?
1. Electronic product code (EPC)
The electronic code of the product of the latest generation product identification code, which is responsible for the China Article Numbering Center, can be used to uniquely identify the items, containers, pallets, locations, etc. in the supply chain. The EPC is stored on an RFID tag that contains a silicon chip and an antenna. When the EPC tag is read, it can be connected to some dynamic data. And use the Internet to achieve the delivery of information.
2. Radio Frequency Identification (RFID)
Radio frequency identification technology is a relatively advanced non-contact identification technology, attached to traceable items, globally circulated and identified and read and written. RFID tags store standardized and interoperable information. The wireless data communication network automatically collects them into the central information system to realize the identification of commodities such as fruits and vegetables, and then realizes the information exchange and sharing through an open computer network to realize the "transparent" management of the articles. It has the features of being able to update at any time, convenient scanning, fast scanning speed, multi-target scanning for visible and invisible, and low cost. At present, it is widely used in supermarkets, shopping malls, warehouses, libraries, etc. It is the basis and key technology for the application of Internet of Things technology in the cold chain logistics of fruits and vegetables.
3. QR code technology
A two-dimensional code, also known as a two-dimensional barcode, is a bar code that stores information in a two-dimensional space in the horizontal and vertical directions. The two-dimensional code technology has the characteristics of large storage capacity, good confidentiality, good tracking performance, strong damage resistance and low cost. It is mainly used for product quality traceability, logistics center, storage center, joint logistics center annual goods and fixed assets inventory, to play the role of immediate inventory, immediate decision-making, at the same time, consumers can check the goods by scanning the QR code on the item.
4. Global Positioning System Technology (GPS)
The global positioning system has a new generation of satellite navigation and positioning system with full-scale real-time three-dimensional navigation and positioning capabilities of sea, land and air. As a mobile sensing technology, GPS is an important technology used in the application of IoT to cold chain logistics. The combination of GPS and modern communication technology makes the method of measuring the three-dimensional coordinates of the earth surface from static development to dynamic, from data post-processing to real-time positioning and navigation, greatly expanding its application breadth and depth, and the cold chain logistics of fruits and vegetables. Real-time query and location of transport vehicles and items.
5. Savant Network
Savant is a distributed network software that manages and transmits distributed network software for product electronic code related data. A middleware between the reader and the Internet. The reader reads the information from the sensors and electronic tags and sends them to Savant. Savant has functions such as data buffering, data verification and data temporary storage. The data is processed by Savant and transmitted to the Internet.
Reprinted from the network