Which layer of the Internet of Things does rfid technology belong to?
As the Internet of Things gradually enters our lives, more and more people are understanding what Internet of Things technology is. Today we will start from RFID technology and let everyone know which layer of the Internet of Things RFID technology belongs to.
Which layer of the Internet of Things does rfid technology belong to?
The IoT technology system can be divided into four layers: perception layer, network layer, platform layer and application layer. Each layer has different responsibilities. The perception layer is the tentacle of the Internet of Things, which helps the Internet of Things collect data. RFID technology belongs to the perception layer of the Internet of Things. The network layer mainly transmits information; the platform layer provides an interactive platform for various devices to achieve remote control; the application layer mainly processes data collected from the device to provide intelligent services to different industries.
1. Perception layer
The main function of the perception layer is to collect data from the physical world, which is the key bridge for communication between the human world and the physical world. There are two main sources of data for the perception layer:
One is to actively collect and generate information, such as sensors, multimedia information collection, GPS, etc. This method requires active recording or interaction with target objects to obtain data. There is a process of collecting data, and the information is highly real-time.
The other is to passively save information by accepting external instructions, such as radio frequency identification (RFID), IC card identification technology, bar code, QR code technology, etc. This method generally saves the information in advance and waits to be read directly.
For example, the access control cards used in some communities now use RFID identification technology. The user information is first entered into the central processing system, and then the user simply swipes the card every time he enters the door.
2. Network layer
The main function of the network layer is to transmit information and transmit the data obtained by the perception layer to the designated destination.
In the field of Internet of Things, embedded programs are equivalent to the human brain. After the information collection is completed, the brain will issue instructions to the communication module to transmit the information to a certain node. The network layer will involve what kind of communication network to choose and what kind of communication mechanism to use to transmit the information.
The word "net" in the Internet of Things actually contains two parts: access network and Internet. Access to the network can connect things with the Internet and realize information interaction between people and things, and things and things. At present, there are mainly two types of access networks, one is wired network access, and the other is wireless network access.
Wired mainly includes Ethernet, serial communication (RS-232, RS485, etc.) and USB, etc.
Wireless is divided into short-range wireless, short-range wireless and long-range wireless communications. Short-range wireless communication mainly includes NFC, RFID, IC, etc. Short-range wireless communication mainly includes Wifi, ZigBee, Bluetooth, etc. Long-distance wireless communication mainly includes GSM (2G, 3G, 4G, 5G, etc.), eMTS, Lora, NB- IoT etc.
3. Platform layer
The IoT platform can provide devices with safe and reliable connection and communication capabilities, connect downwards to a large number of devices, support data reporting to the cloud, and provide cloud API upwards. The server sends instructions to the device by calling the cloud API to achieve remote control.
The IoT platform mainly includes device access, device management, security management, message communication, monitoring operation and maintenance, and data applications.
Device access mainly refers to how the device connects and communicates with the IoT platform, which is mainly reflected in:
Device-side development: Provide device-side SDK development for MQTT, CoAP, HTTP, HTTPS and other protocols to help different devices easily access
Device network access management: Provides different network access solutions based on cellular (2G, 3G, 4G, 5G), NB-IoT, LoRaWAN, WI-FI, etc.
4. Application layer
The application layer is the ultimate goal of the Internet of Things. It mainly processes the data collected from the device to provide intelligent services to different industries.
Currently, the Internet of Things involves many industries, such as electricity, logistics, environmental protection, agriculture, industry, urban management, home life, etc., but essentially there are four main types of Internet of Things services:
Monitoring type, such as logistics monitoring, pollution monitoring, etc. Control type, such as intelligent transportation, smart home, etc. Scanning type, such as mobile wallet, highway non-stop toll collection, etc. Inquiry type, such as remote meter reading, intelligent retrieval, etc.
IoT business processing is relatively complex because it involves the integration of massive data, which poses a great challenge to end users in different industries. Therefore, there are currently specially provided middleware on the market such as cloud computing, data mining, artificial intelligence, information fusion, etc. that can be used by industry players. This has also stimulated the prosperity of the Internet of Things application industry to a certain extent.
The above is the relevant content about which layer of the Internet of Things RFID technology belongs to. There are many technologies involved in the Internet of Things. It includes not only RFID radio frequency identification technology, but also sensors, multimedia information collection and other technologies. Faced with many key technologies, we can choose the appropriate sensing method based on our own actual conditions and application scenarios!
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