Switching method and control switching system thereof of radio frequency identification device (RFID) multi-protocol reader-writer

A technology of control system and switching system, which is applied in the direction of instruments, induction record carriers, computer parts, etc., can solve problems such as inconsistent standards and incompatible protocols, and achieve flexible system costs, reduce costs, and be conducive to development and promotion. Effect

Inactive Publication Date: 2010-07-07
ZHENGZHOU UNIV
View PDF0 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But on the other hand, with the rapid development of RFID technology, various communication protocols have been introduced internationally to adapt to different applications. The protocols are incompatible with each other, and the standard is not unified. It has become one of the important factors restricting the development of RFID.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Switching method and control switching system thereof of radio frequency identification device (RFID) multi-protocol reader-writer
  • Switching method and control switching system thereof of radio frequency identification device (RFID) multi-protocol reader-writer
  • Switching method and control switching system thereof of radio frequency identification device (RFID) multi-protocol reader-writer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Such as figure 1 As shown, in the present invention, the RFID multi-protocol reader / writer determines the standard of receiving signals according to the command of the host computer, and by adjusting the working parameters and working status of the controllable circuit controlled by the software, like this, the working parameters of the hardware circuit can be determined by the host computer Controlled by software, it is called soft switch switching in the present invention. The change or conversion of the working state of the hardware circuit is realized through the above-mentioned soft switch switching, so that the receiving channel circuit and the transmitting channel circuit can process various input signals according to different protocols. The above-mentioned controllable circuit mainly includes a controllable band-pass filter and a controllable demodulator. In this embodiment, the RFID multi-protocol reader-writer is a dual-protocol RFID reader-writer of ISO1569...

Embodiment 2

[0059] The difference between this embodiment and Embodiment 1 is that in this embodiment, the RFID multi-protocol reader / writer is a 13.56MHz dual-protocol RFID reader / writer of ISO18000-3 and 14443A and B standards. Among them, ISO18000-3 has two modes: mode 1 is compatible with the ISO15693 protocol, so its controllable circuit can use a soft switch switching circuit consistent with the controllable circuit of the ISO15693 protocol; and mode 2 uses MFM coding, and its subcarrier The center frequency is 969 ~ 3013kHz. Based on this, in the controllable circuit corresponding to ISO18000-3 mode 2, the time constant RC in the detection circuit should also be slightly smaller, and the bandwidth range of the band-pass filter should be correspondingly larger.

[0060] Other technical characteristics are identical with embodiment 1.

[0061] In addition to the controllable filtering and detection circuits, the controllable circuit based on the soft switch of the present invention ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Capacitanceaaaaaaaaaa
Login to view more

Abstract

The invention discloses a switching method of a radio frequency identification device (RFID) multi-protocol reader-writer. The RFID multi-protocol reader-writer determines a standard of receiving a signal according to an upper computer order and enables a receiving channel circuit and an emitting channel circuit to process according to input signals of different protocols by regulating the working parameters and the working state of a controllable circuit controlled by software. In the invention, the working parameters of a hardware circuit are automatically switched through a switch circuit controlled by the software, namely soft switch switching, thus the change or conversion of the working state of the hardware circuit is realized through the soft switch switching so that the receiving channel circuit and the emitting channel circuit can automatically receive and process multiple signals. The invention enables the RFID multi-protocol reader-writer to compete the read and write operation of an RFID radio frequency card with different protocols in such a way that the software controls the working parameters of an automatic switching circuit, meets the requirements of the RFID radio frequency card on working parameter change, reduces the application cost of the RFID radio frequency card with different protocols and is beneficial to the large-range popularization and generalization of the RFID radio frequency card.

Description

technical field [0001] The invention belongs to the technical field of radio frequency identification, and in particular relates to a switching method of an RFID multi-protocol reader-writer, and a soft switch control switching system of the RFID multi-protocol reader-writer implementing the method. Background technique [0002] Radio frequency identification technology RFID is a non-contact automatic identification technology. Its basic principle is to use radio frequency signals and spatial coupling, that is, the transmission characteristics of inductive coupling or electromagnetic coupling to automatically identify target objects and obtain relevant data, and track items through the background network. And information sharing can be done on a larger scale or even globally. As a new automatic identification technology, radio frequency identification technology RFID has developed rapidly in recent years. Domestic RFID-based applications include urban traffic card systems an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06K7/00
Inventor 王忠勇邓计才宋豫全高向川
Owner ZHENGZHOU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap