Acoustic surface wave passive radio frequency identification tag and sensor
A surface acoustic wave and passive radio frequency technology, which is applied to instruments, record carriers used by machines, computer components, etc., can solve problems such as high product cost, difficult management of finished products, and complicated production technology of large-capacity labels.
Active Publication Date: 2013-08-21
NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP CO LTD
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Problems solved by technology
Therefore, the production technology of large-capacity labels must be complicated, resulting in high product costs and difficult product management.
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[0039] Below in conjunction with accompanying drawing, the present invention is described in detail.
[0040] The main features of this innovative technology are: using multiple anti-collision chip units, code-division and time-division combination to form a mass label system, which has the characteristics of low cost and universal use, and will make the practical application of large-capacity surface acoustic wave radio frequency identification tags a reality. technical indication as figure 1As shown (schematic diagram of combined code surface acoustic wave radio frequency identification tag system): the reader sequentially transmits several different code-modulated carrier electric pulses, and the input anti-collision transducers of each surface acoustic wave identification code chip unit of the combined label detection head also sequentially Only the corresponding carrier electric pulse generates interrogation sound pulse in the chip, which is converted into the identificat...
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The invention discloses an acoustic surface wave passive radio frequency identification tag and a sensor. The identification tag comprises a reader, a responder and a database. A probe of the responder is a passive component using the acoustic surface wave technology, and comprises one or more acoustic surface wave radio frequency identification code chip units with an anti-collision function. The reader orderly transmits a plurality of different code modulation carrier pulses, input anti-collision transducers of the acoustic surface wave radio frequency identification code chip units in eachprobe or of different acoustic surface wave radio frequency identification code chip units in the same probe only orderly generate in-chip related acoustic pulses for corresponding carrier pulses, and the in-chip related acoustic pulses are converted into an echo electric pulse string by a coding body in the acoustic surface wave radio frequency identification code chip units and returned back tothe reader for demodulation so as to get identification codes and sensing information. With the tag and the sensor, a radio frequency identification system is formed by combination of code division and time division based on the plurality of anti-collision chip units, and the radio frequency identification system has the characteristics of low cost and universality, so that practical application of a high-capacity acoustic surface wave radio frequency identification tag and a multi-functional acoustic surface wave wireless sensor is facilitated.
Description
technical field [0001] The present invention relates to surface acoustic wave passive radio frequency identification (RFID) tags and sensors. Background technique [0002] Radio Frequency Identification (RFID) is the need of today's technological development. RFID tags using surface acoustic wave (SAW) technology are passive, suitable for harsh environments, and easy to maintain and produce. They are a supplement to today's IC products. The surface acoustic wave sensor is also the first choice for the wireless Internet of Things due to its passive and wireless sensing characteristics. [0003] Surface acoustic wave radio frequency identification tags and sensors have been developed for many years, and a number of related patents have been published. Large-capacity coding is the basic condition for the practical application of radio frequency tags, but the market promotion has not been satisfactory so far. The main reason is that large-capacity coding tags Production techno...
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IPC IPC(8): G06K19/077
Inventor 陈培杕李勇徐海林孙娟王祥邦
Owner NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP CO LTD