From the definition of the Internet of Things and the role played by various technologies, the key core technology of the Internet of Things should be Wireless Sensor Network (WSN) technology. The main reason is: WSN technology runs through all three levels of the Internet of Things, and is the other level. The integrated application of technology has a prominent role in the development of the Internet of Things. The development of WSN technology can provide a clearer direction for other levels of technology.
Sensory technology, radio frequency identification technology, two-dimensional code technology, micro-electromechanical system and GPS technology 1. Sensing technology of sensor technology The sensor technology, together with computer technology and communication technology, is called the three major technologies of information technology. From the point of view of bionics, if the computer is seen as the "brain" that processes and identifies information, and the communication system as the "nervous system" that transmits information, then the sensor is the "sensory organ." The miniature wireless sensor technology and the sensor network of this component are important technical means of the perception layer of the Internet of Things.
2. Radio frequency identification (RFID) technology Radio frequency identification (RFID) is a wireless communication technology that identifies specific targets and reads and writes related data through radio signals. In China, RFID has been widely used in the fields of ID cards, electronic charging systems, and logistics management.
The market of RFID technology is mature and the label cost is low. However, RFID generally does not have the data collection function. It is mostly used to identify items and store attributes, and is limited in metal and liquid environments. RFID technology belongs to the information collection layer of the Internet of Things. technology.
3. Micro Electro Mechanical Systems (MEMS)
Micro-electro-mechanical systems refer to micro-electro-mechanical systems that integrate micro-sensors, actuators, and signal processing and control circuits, interface circuits, communications, and power supplies using micro-scale manufacturing processes using large-scale integrated circuit manufacturing processes. MEMS technology belongs to the information gathering layer technology of the Internet of Things.
4. GPS Technology GPS technology, also known as the Global Positioning System, is a new generation of satellite navigation and positioning system with all-round real-time three-dimensional navigation and positioning capabilities of sea, land and air. As a mobile sensing technology, GPS is an important technology for the extension of the Internet of Things to the collection of mobile objects by mobile objects. It is also an important technology for logistics intelligence and intelligent transportation.
The core technology information convergence layer: sensor network ad hoc network technology, LAN technology and wide area network technology 1. Wireless Sensor Network (WSN) technology The basic function of the Wireless Sensor Network (WSN) is a series of spatially dispersed sensor units. Through the self-organized wireless network connection, the collected data are transmitted and summarized through the wireless network, so as to realize the coordinated monitoring of the physical or environmental conditions within the scope of spatial dispersion, and perform corresponding analysis and processing according to these information.
WSN technology penetrates the three levels of the Internet of Things and is an emerging technology that combines the three technologies of computing, communications, and sensors. It has the advantages of large-scale, low-cost, high-density, flexible deployment, real-time acquisition, and all-weather work. It has a significant driving effect on other industries of the Internet of Things.
2. Wi-Fi
Wi-Fi (Wireless Fidelity) is a wireless network structure based on access points (Access Point). At present, it has been deployed on a certain scale and is combined with sensors in some applications.
Sensory technology, radio frequency identification technology, two-dimensional code technology, micro-electromechanical system and GPS technology 1. Sensing technology of sensor technology The sensor technology, together with computer technology and communication technology, is called the three major technologies of information technology. From the point of view of bionics, if the computer is seen as the "brain" that processes and identifies information, and the communication system as the "nervous system" that transmits information, then the sensor is the "sensory organ." The miniature wireless sensor technology and the sensor network of this component are important technical means of the perception layer of the Internet of Things.
2. Radio frequency identification (RFID) technology Radio frequency identification (RFID) is a wireless communication technology that identifies specific targets and reads and writes related data through radio signals. In China, RFID has been widely used in the fields of ID cards, electronic charging systems, and logistics management.
The market of RFID technology is mature and the label cost is low. However, RFID generally does not have the data collection function. It is mostly used to identify items and store attributes, and is limited in metal and liquid environments. RFID technology belongs to the information collection layer of the Internet of Things. technology.
3. Micro Electro Mechanical Systems (MEMS)
Micro-electro-mechanical systems refer to micro-electro-mechanical systems that integrate micro-sensors, actuators, and signal processing and control circuits, interface circuits, communications, and power supplies using micro-scale manufacturing processes using large-scale integrated circuit manufacturing processes. MEMS technology belongs to the information gathering layer technology of the Internet of Things.
4. GPS Technology GPS technology, also known as the Global Positioning System, is a new generation of satellite navigation and positioning system with all-round real-time three-dimensional navigation and positioning capabilities of sea, land and air. As a mobile sensing technology, GPS is an important technology for the extension of the Internet of Things to the collection of mobile objects by mobile objects. It is also an important technology for logistics intelligence and intelligent transportation.
The core technology information convergence layer: sensor network ad hoc network technology, LAN technology and wide area network technology 1. Wireless Sensor Network (WSN) technology The basic function of the Wireless Sensor Network (WSN) is a series of spatially dispersed sensor units. Through the self-organized wireless network connection, the collected data are transmitted and summarized through the wireless network, so as to realize the coordinated monitoring of the physical or environmental conditions within the scope of spatial dispersion, and perform corresponding analysis and processing according to these information.
WSN technology penetrates the three levels of the Internet of Things and is an emerging technology that combines the three technologies of computing, communications, and sensors. It has the advantages of large-scale, low-cost, high-density, flexible deployment, real-time acquisition, and all-weather work. It has a significant driving effect on other industries of the Internet of Things.
2. Wi-Fi
Wi-Fi (Wireless Fidelity) is a wireless network structure based on access points (Access Point). At present, it has been deployed on a certain scale and is combined with sensors in some applications.
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