Using rfid sensors, QR codes, etc. to obtain object information anytime and anywhere refers to "overall perception of the Internet of Things"; overall perception can use radio frequency identification, QR codes, smart sensors and other sensing devices to perceive and obtain the object's information. All kinds of information; the basic characteristics of the Internet of Things can be summarized as overall perception, reliable transmission and intelligent processing.
The operating environment of this article: Windows 7 system, DELL G3 computer
Use rfid sensor QR code to obtain object information anytime and anywhere What is meant?
Overall perception of the Internet of Things.
Overall perception can use radio frequency identification, QR codes, smart sensors and other sensing devices to perceive and obtain various information about objects. Basic characteristics of the Internet of Things From the perspective of communication objects and processes, the information interaction between things and people and things is the core of the Internet of Things. The basic characteristics of the Internet of Things can be summarized as overall perception, reliable transmission and intelligent processing.
Reliable transmission, through the integration of the Internet and wireless networks, transmits object information in real time and accurately to facilitate information exchange and sharing. Intelligent processing uses various intelligent technologies to analyze and process the data and information sensed and transmitted to achieve intelligent monitoring and control.
Extended information
The basic working principle of RFID technology is not complicated: after the tag enters the reader, it receives the radio frequency signal emitted by the reader, and relies on the induced current The energy obtained sends out the product information (Passive Tag, Passive Tag or Passive Tag) stored in the chip.
Or the tag actively sends a signal of a certain frequency (Active Tag, active tag or active tag). After the reader reads and decodes the information, it is sent to the central information system for relevant data processing.
A complete RFID system is composed of three parts: a reader and an electronic tag, also known as a transponder and an application software system. Its working principle is that the reader (Reader) emits a specific frequency. Radio wave energy is used to drive the circuit to send out the internal data. At this time, the Reader receives and interprets the data in sequence and sends it to the application program for corresponding processing.
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