Ultrahigh frequency RFID module

Abstract

The utility model discloses an ultrahigh frequency RFID module which comprises a GD32F30x series single chip microcomputer and an Indy R2000 series reader-writer chip, the GD32F30x series single chip microcomputer is provided with an I2S0 interface and an I2S1 interface, the I2S0 interface is used for writing ports, the I2S1 interface is used for reading ports, the I2S0 interface is provided with a CLK end, an NSS end and an MOSI end, the I2S1 interface is provided with a CLK end, an NSS end and an MISO end, the Indy R2000 series reader-writer chip is provided with an R2TCLK end, an R2TFRM end, an R2TD0 end, a T2RCLK end, a T2RFRM end and a T2RD0 end, the CLK end the NSS end of the I2S0 interface is connected with the R2TFRM end, the MOSI end of the I2S0 interface is connected with the R2TD0 end, and the CLK end of the I2S1 interface is connected with the T2RCLK end.

Description

Technical Field

[0001] The utility model relates to an RFID module, in particular to an ultra-high frequency RFID module. Background Art

[0002] Existing UHF RFID modules generally use ATMEL ATM91SAM7S series MCU and IMPINJ IndyR2000 series reader chips. However, with the global "chip shortage" in recent years, the procurement cost and difficulty of ATMEL MCU chips have continued to increase, which has also led to a continuous increase in the cost of UHF RFID modules, seriously affecting the UHF RFID application scenarios with strict cost control. In addition, the ATMEL MCU chip uses the SSC interface to communicate and control the R2000 chip. Except for the ATMEL MCU, other brands of MCUs on the market almost do not have the SSC interface. There are very few alternative MCU chips, which is not conducive to product supply chain management. Summary of the invention

[0003] The purpose of the present invention is to provide an ultra-high frequency RFID module to solve the problems raised in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions:

[0004] An ultra-high frequency RFID module, comprising a GD32F30x series single-chip microcomputer and an Indy R2000 series reader / writer chip, wherein the GD32F30x series single-chip microcomputer is provided with an I2S0 interface and an I2S1 interface, wherein the I2S0 interface is used for a write port, and the I2S1 interface is used for a read port, wherein the I2S0 interface is provided with a CLK terminal, an NSS terminal, and a MOSI terminal, wherein the I2S1 interface is provided with a CLK terminal, an NSS terminal, and a MISO terminal, wherein the Indy The R2000 series reader / writer chip is provided with an R2T_CLK end, an R2T_FRM end, an R2T_D0 end, a T2R_CLK end, a T2R_FRM end, and a T2R_D0 end. The CLK end of the I2S0 interface is connected to the R2T_CLK end, the NSS end of the I2S0 interface is connected to the R2T_FRM end, the MOSI end of the I2S0 interface is connected to the R2T_D0 end, the CLK end of the I2S1 interface is connected to the T2R_CLK end, the NSS end of the I2S1 interface is connected to the T2R_FRM end, and the MISO end of the I2S1 interface is connected to the T2R_D0 end.

[0005] Furthermore, the ultra-high frequency RFID module realizes communication between the RFID tag and the host computer.

[0006] The beneficial effects of the utility model are as follows: since the ubiquitous I2S interface is used to replace the SSC interface of the ATMEL single-chip microcomputer chip, the cost of using the GD32F30x series single-chip microcomputer is lower, the substitutability is stronger, and the procurement difficulty is lower. Both the I2S0 interface and the I2S1 interface can also realize stable and reliable communication with the Indy R2000 series reader chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0008] Figure 1 It is a structural schematic diagram of the utility model;

[0009] Figure 2 This is a state diagram used in the present utility model.

[0010] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding. DETAILED DESCRIPTION

[0011] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0012] In the present invention, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0013] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0014] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0015] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0016] It should also be understood that the terms used in the utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0017] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0018] like Figure 1As shown, an ultra-high frequency RFID module includes a GD32F30x series single-chip microcomputer and an Indy R2000 series reader chip, wherein the GD32F30x series single-chip microcomputer is provided with an I2S0 interface and an I2S1 interface, wherein the I2S0 interface is used for a write port, and the I2S1 interface is used for a read port, wherein the I2S0 interface is provided with a CLK terminal, an NSS terminal, and a MOSI terminal, wherein the I2S1 interface is provided with a CLK terminal, an NSS terminal, and a MISO terminal, wherein the Indy The R2000 series reader / writer chip is provided with an R2T_CLK end, an R2T_FRM end, an R2T_D0 end, a T2R_CLK end, a T2R_FRM end, and a T2R_D0 end. The CLK end of the I2S0 interface is connected to the R2T_CLK end, the NSS end of the I2S0 interface is connected to the R2T_FRM end, the MOSI end of the I2S0 interface is connected to the R2T_D0 end, the CLK end of the I2S1 interface is connected to the T2R_CLK end, the NSS end of the I2S1 interface is connected to the T2R_FRM end, and the MISO end of the I2S1 interface is connected to the T2R_D0 end.

[0019] When in use, the I2S0 interface is configured as the master mode and the I2S1 interface is configured as the slave mode, where the master mode is responsible for sending the clock signal and initiating communication, and the slave mode is responsible for receiving the clock signal; the data audio standards of the I2S0 interface and the I2S1 interface are configured as the PCM standard short frame synchronization mode; the data frame format of the I2S0 interface and the I2S1 interface is configured as the 32-bit mode; the CLK clock frequency of the I2S0 interface and the I2S1 interface is configured to meet the requirements of the R2000 chip, supporting a maximum upstream of 150Mbps and a downstream of 450Mbps. By configuring the I2S port of the GD32F30x microcontroller, the I2S0 interface and the I2S1 interface realize serial interface communication with the Indy R2000 series reader chip.

[0020] Since the ubiquitous I2S interface is used to replace the SSC interface of the ATMEL microcontroller chip, the GD32F30x series microcontroller has lower costs, stronger substitutability, and less procurement difficulty. Both the I2S0 interface and the I2S1 interface can also achieve stable and reliable communication with the Indy R2000 series reader chip.

[0021] like Figure 2 As shown, further, the UHF RFID module realizes communication between the RFID tag and the host computer.

[0022] As the core component of the system, the UHF RFID module plays the role of tag data collection and transfer terminal. At the same time, as a device terminal, the RFID module needs to be controlled and managed by the PC host computer.

[0023] Regarding the embodiments of the present utility model, it should also be noted that, in the absence of conflict, the embodiments of the present utility model and the features therein can be combined with each other to obtain new embodiments.

[0024] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. The protection scope of the utility model shall be based on the protection scope of the claims. Although the utility model has been disclosed as a preferred embodiment, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modify the technical content disclosed above to an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the technical solution of the utility model.

Claims

1. An ultra-high frequency RFID module, characterized in that: The invention comprises a GD32F30x series single-chip microcomputer and an Indy R2000 series reader / writer chip. The GD32F30x series single-chip microcomputer is provided with an I2S0 interface and an I2S1 interface. The I2S0 interface is used for writing ports, and the I2S1 interface is used for reading ports. The I2S0 interface is provided with a CLK terminal, an NSS terminal, and a MOSI terminal. The I2S1 interface is provided with a CLK terminal, an NSS terminal, and a MISO terminal. The Indy The R2000 series reader / writer chip is provided with an R2T_CLK end, an R2T_FRM end, an R2T_D0 end, a T2R_CLK end, a T2R_FRM end, and a T2R_D0 end. The CLK end of the I2S0 interface is connected to the R2T_CLK end, the NSS end of the I2S0 interface is connected to the R2T_FRM end, the MOSI end of the I2S0 interface is connected to the R2T_D0 end, the CLK end of the I2S1 interface is connected to the T2R_CLK end, the NSS end of the I2S1 interface is connected to the T2R_FRM end, and the MISO end of the I2S1 interface is connected to the T2R_D0 end.

2. The UHF RFID module according to claim 1, characterized in that: The ultra-high frequency RFID module realizes the communication between the RFID tag and the host computer.

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