A data transmission system based on uhf RFID radio frequency interference
A data transmission system and radio frequency interference technology, which is applied in the field of wireless communication, can solve the problems of complex wireless network protocols, high energy consumption of wireless communication modules, and the inability of UHF RFID technology to transmit sensing data, so as to reduce battery maintenance times and low power consumption , low-cost effect
Active Publication Date: 2022-05-10
ZHEJIANG UNIV OF TECH
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[0005] The purpose of this application is to provide a data transmission system based on UHF RFID radio frequency interference to overcome the problems of high energy consumption of wireless sensor node wireless communication modules, complex wireless network protocols, and the inability of UHF RFID technology to transmit sensing data
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[0027] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.
[0028] The process of the reader reading the tag in the RFID system is as follows: figure 1 , the reader transmits a carrier wave with a signal, and the RFID tag can capture energy from the carrier wave to power itself and decode the information. The reader first sends a Query command, and the RFID tag returns a 16-bit random number (RN16) to the reader after receiving it correctly. Immediately after the reader receives RN16, it sends an acknowledgment command (ACK) to the RFID tag. After the RFID tag receives the ACK correctly, it will return the protocol control field (PC), EPC and a c...
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The invention discloses a data transmission system based on UHF RFID radio frequency interference, which includes a radio frequency interference node, an RFID reader and a server. The radio frequency interference node includes a control module, a radio frequency interference module, an RFID tag and a sensor. The control module is used to obtain the sensing data collected by the sensor, and control the radio frequency interference module to be turned on or off according to the sensing data; when the radio frequency interference module is turned on, it interferes with the RFID reader to read the RFID tag, and the radio frequency interference module When the interference module is turned off, the RFID reader normally reads the RFID tag; the server samples the RFID tag information through the RFID reader and decodes the sensing data. The invention utilizes the advantages of low power consumption, low cost and simple communication protocol of UHF RFID technology, and adopts radio frequency interference technology to realize the transmission of sensing data.
Description
technical field [0001] The application belongs to the technical field of wireless communication, and in particular relates to a data transmission system based on UHF RFID radio frequency interference. Background technique [0002] Wireless sensor networks are widely used in practical scenarios, which have the functions of perception, computing and communication. Can monitor changes in the environment, including temperature, humidity, light intensity, etc. [0003] However, the communication module of the wireless sensor node is very energy-consuming, and frequent replacement of the battery brings great inconvenience and high cost. In addition, wireless sensor nodes need complex network protocols to support network communication, which will bring additional energy and computing resource overhead, and increase data delay. [0004] UHF RFID technology is a non-contact automatic identification technology. It contains readers, tags. The reader is a device for reading and writ...
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IPC IPC(8): H04B5/00H04W84/18G06K7/00
CPCH04B5/0062H04W84/18G06K7/0008Y02D30/70
Inventor 朱艺华陈波张玉繁李燕君
Owner ZHEJIANG UNIV OF TECH