CN113285925A - Communication protocol based on low-cost flexible printed label - Google Patents
Communication protocol based on low-cost flexible printed label Download PDFInfo
- Publication number
- CN113285925A CN113285925A CN202110450052.9A CN202110450052A CN113285925A CN 113285925 A CN113285925 A CN 113285925A CN 202110450052 A CN202110450052 A CN 202110450052A CN 113285925 A CN113285925 A CN 113285925A
- Authority
- CN
- China
- Prior art keywords
- physical layer
- communication protocol
- flexible printed
- data
- presentation layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004891 communication Methods 0.000 title claims abstract description 31
- 238000012856 packing Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/03—Protocol definition or specification
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Communication Control (AREA)
Abstract
The invention discloses a communication protocol based on a low-cost flexible printing label, belonging to the field of communication electronics, and the communication protocol comprises: a presentation layer for packing the data message and transmitting according to the data frame format; receiving the data message transmitted by the presentation layer, and transmitting the data message of the presentation layer to establish a physical layer of a physical link; the physical layer is located below the presentation layer; the frequency of the physical layer is 13.56MHz +/-7 kHz; the data rate of the physical layer is a self-adaptive data baud rate, and the range is as follows: 9600bps-38400 bps; the physical layer communicates in a load modulation mode, and the load modulation meets the requirements of the international standard ISO/IEC 10373-6; the bit coding of the physical layer adopts NRZ-L; the flexible printed label using the communication protocol has low cost, makes large-scale application possible, simplifies circuits, greatly reduces the precision requirement of production equipment, and can completely replace various radio frequency electronic labels in the current market.
Description
Technical Field
The invention relates to the field of communication electronics, in particular to a communication protocol based on a low-cost flexible printed label.
Background
The current universal electronic tag chip mainly adopts the following communication protocols: ISO 14443A/B, ISO 18092ISO 15693; the communication protocol is complex, and is directly transplanted to the flexible printed label, so that the requirement on a flexible circuit is high, the cost is high, and the large-scale application cannot be realized.
Disclosure of Invention
According to the problems existing in the prior art, the invention discloses a communication protocol based on a low-cost flexible printed label, which comprises the following steps:
a presentation layer for packing the data message and transmitting according to the data frame format;
receiving the data message transmitted by the presentation layer, and transmitting the data message of the presentation layer to establish a physical layer of a physical link;
the physical layer is located below the presentation layer.
Further, the frequency of the physical layer is 13.56MHz +/-7 kHz; the data rate of the physical layer is a self-adaptive data baud rate, and the range is as follows: 9600bps-38400 bps; the physical layer communicates in a load modulation mode, and the load modulation meets the requirements of the international standard ISO/IEC 10373-6; and the bit coding of the physical layer adopts NRZ-L.
Further, the presentation layer and the physical layer include:
an oscillator for generating a reference operating frequency fc;
the information memory is used for storing the label identity information, setting the switch display by adopting the identity information of the switch display label and ensuring the uniqueness of the identity code;
a frequency divider for dividing the reference working frequency transmitted by the oscillator to generate 5 groups of frequency division signals;
the encoder is used for 5 groups of frequency division signals transmitted by the frequency divider and the identity information of the label transmitted by the information storage;
and an antenna modulator for loading the signals transmitted by the encoder from the switch array to an antenna.
Further, the fields of the digital frame format of the presentation layer include: a sync word, identity information, a check word and an end word.
Further, the check word calculation method is as follows:
wherein: CS represents check word, and takes low 8 bits of data; n represents the number of bits of the UID.
A low cost flexible printed label comprising a communication protocol as claimed in any one of the preceding claims.
Due to the adoption of the technical scheme, the communication protocol based on the low-cost flexible printed label has the advantages that the flexible printed label using the communication protocol has low cost, so that large-scale application becomes possible, the flexible printed label using the simplified communication protocol simplifies a circuit, the precision requirement on production equipment is greatly reduced, the cost after the scale production is about 20 percent of that of a standard protocol label, various radio frequency electronic labels in the current market can be completely replaced, the communication protocol can be widely applied to various industries, and the communication protocol is particularly suitable for the application of cost-sensitive fast-consumption industries, such as beverage packaging, express packaging and the like; the method can realize low-cost object identification and lay a solid foundation for the interconnection of everything; one object can be realized, UID can reach 40BIT, codes can reach more than trillion, and the communication is stable and reliable; the protocol has self-adapting and checking functions and can be used in complex environment.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a block diagram of a tag and reader of the present invention;
FIG. 2is a schematic diagram of a tag and reader communication according to the present invention;
FIG. 3 is a waveform diagram of a synchronization signal;
fig. 4 is a schematic diagram of the module at the tag end.
Detailed Description
In order to make the technical solutions and advantages of the present invention clearer, the following describes the technical solutions in the embodiments of the present invention clearly and completely with reference to the drawings in the embodiments of the present invention:
a low cost flexible printed label based communication protocol comprising:
a presentation layer for packing the data message and transmitting according to the data frame format;
receiving the data message transmitted by the presentation layer, and transmitting the data message of the presentation layer to establish a physical layer of a physical link;
the physical layer is located below the presentation layer.
The communication protocol is used for the label reader to correctly receive the identity information sent by the flexible printing label.
In addition, the communication protocol standardizes the energy and information interaction process and requirements between the reader and the flexible printed label.
FIG. 1 is a block diagram of a tag and reader of the present invention; each communication participant mainly performs the following functions:
flexible printed label: receiving energy from the reader → activating the tag circuit → reading the identity information of the tag → modulating the identity information to an antenna for transmission to the reader;
a tag reader: transmitting energy to the tag → receiving and demodulating the signal sent by the tag → analyzing the signal;
FIG. 2is a schematic diagram of a tag and reader communication according to the present invention;
further, the physical layer has the following characteristics:
the physical layer energy transfer: the reader should generate an RF field that gives energy;
frequency of the physical layer: the RF operating field frequency (fc) should be 13.56MHz + -7 kHz;
data rate of the physical layer: the self-adaptive data baud rate is in a range of 9600bps,38400 bps;
the reader automatically calculates the baud rate according to the received synchronous words;
the physical layer adopts load modulation, the tag can communicate with a reader through an inductive coupling area, and the load modulation meets the requirements of the international standard ISO/IEC 10373-6.
Representation and encoding of bits of the physical layer: the bit coding adopts NRZ-L;
the method for realizing the self-adaptive data baud rate of the physical layer comprises the following steps:
when the communication data frame is sent with the sync word 0XAA first, the sync word waveform is as shown in fig. 3, and the reader extracts the time length T of the sync signal after detecting the sync signal, the data baud rate can be calculated to be 1/(T/4).
Advantages of adaptive data baud rate:
the requirement on the reference oscillation frequency precision of the printed label can be reduced, the qualification rate of products is improved, and the cost is reduced.
Further, the presentation layer has the following characteristics:
the data frame format of the presentation layer is illustrated in the following table
| Field(s) | Length of | Description of the invention |
| |
1 | Fixed to 0XAA |
| Identity information (UID) | 5 | Identity code of label |
| Check word (CS) | 1 | |
| Ending word | ||
| 1 | Fixed at 0X55 |
Examples of the data packet of the presentation layer are as follows:
the check word calculation method of the representation layer is as follows:
wherein: CS represents check word, and takes low 8 bits of data; n represents the number of bits of the UID.
Further, fig. 4 is a schematic diagram of a module at a tag end, where the presentation layer and the physical layer include: the system comprises an oscillator, an information memory, a frequency divider, an encoder and an antenna modulator;
the oscillator is used for generating a reference working frequency fc;
the information memory is used for storing label identity information, setting switch display by adopting the identity information of the switch display label and ensuring the uniqueness of identity codes;
the frequency divider divides the reference working frequency transmitted by the oscillator to generate 5 groups of frequency division signals f2, f4, f8, f16 and f32 (the number after f represents the frequency division number);
the encoder displays 5 groups of frequency division signals transmitted by the frequency divider and identity information of the label transmitted by the information storage through a switch;
the antenna modulator loads the signals from the switch array transmitted by the encoder onto an antenna.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. A communication protocol based on low cost flexible printed labels, characterized by: the method comprises the following steps:
a presentation layer for packing the data message and transmitting according to the data frame format;
receiving the data message transmitted by the presentation layer, and transmitting the data message of the presentation layer to establish a physical layer of a physical link;
the physical layer is located below the presentation layer.
2. A low cost flexible printed label based communication protocol according to claim 1, characterized in that: the frequency of the physical layer is 13.56MHz +/-7 kHz; the data rate of the physical layer is a self-adaptive data baud rate, and the range is as follows: 9600bps-38400 bps; the physical layer communicates in a load modulation mode, and the load modulation meets the requirements of the international standard ISO/IEC 10373-6; and the bit coding of the physical layer adopts NRZ-L.
3. A low cost flexible printed label based communication protocol according to claim 1, characterized in that: the presentation layer and the physical layer include:
an oscillator for generating a reference operating frequency fc;
the information memory is used for storing the label identity information, setting the switch display by adopting the identity information of the switch display label and ensuring the uniqueness of the identity code;
a frequency divider for dividing the reference working frequency transmitted by the oscillator to generate 5 groups of frequency division signals;
the encoder is used for 5 groups of frequency division signals transmitted by the frequency divider and the identity information of the label transmitted by the information storage;
and an antenna modulator for loading the signals transmitted by the encoder from the switch array to an antenna.
4. A low cost flexible printed label based communication protocol according to claim 1, characterized in that: the fields of the digital frame format of the presentation layer include: a sync word, identity information, a check word and an end word.
5. The low cost flexographic label based communication protocol according to claim 4, wherein: the check word calculation method comprises the following steps:
wherein: CS represents check word, and takes low 8 bits of data; n represents the number of bits of the UID.
6. A low cost flexible printed label comprising a communication protocol according to any of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110450052.9A CN113285925A (en) | 2021-04-25 | 2021-04-25 | Communication protocol based on low-cost flexible printed label |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110450052.9A CN113285925A (en) | 2021-04-25 | 2021-04-25 | Communication protocol based on low-cost flexible printed label |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113285925A true CN113285925A (en) | 2021-08-20 |
Family
ID=77277396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110450052.9A Pending CN113285925A (en) | 2021-04-25 | 2021-04-25 | Communication protocol based on low-cost flexible printed label |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113285925A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1601547A (en) * | 2004-10-21 | 2005-03-30 | 复旦大学 | Power self-adaptive variable data rate communicator and method based on RF identification |
| EP1801741A2 (en) * | 2005-12-22 | 2007-06-27 | Giesecke & Devrient GmbH | Portable data carrier with active noncontact interface |
| CN101114331A (en) * | 2007-08-06 | 2008-01-30 | 北京航空航天大学 | Universal read-write machine communicating protocol based on EPC read-write machine specification |
| CN103714375A (en) * | 2013-09-26 | 2014-04-09 | 斯凯瑞利（北京）科技有限公司 | Active tag and radio frequency front-end chip thereof |
| US20160301516A1 (en) * | 2015-04-09 | 2016-10-13 | Em Microelectronic-Marin Sa | Method and device for processing uhf signals for an epc communication |
| US10671822B1 (en) * | 2019-09-11 | 2020-06-02 | RadicalID, Inc. | Multipurpose RFID transponder and a system for reading it |
-
2021
- 2021-04-25 CN CN202110450052.9A patent/CN113285925A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1601547A (en) * | 2004-10-21 | 2005-03-30 | 复旦大学 | Power self-adaptive variable data rate communicator and method based on RF identification |
| EP1801741A2 (en) * | 2005-12-22 | 2007-06-27 | Giesecke & Devrient GmbH | Portable data carrier with active noncontact interface |
| CN101114331A (en) * | 2007-08-06 | 2008-01-30 | 北京航空航天大学 | Universal read-write machine communicating protocol based on EPC read-write machine specification |
| CN103714375A (en) * | 2013-09-26 | 2014-04-09 | 斯凯瑞利（北京）科技有限公司 | Active tag and radio frequency front-end chip thereof |
| US20160301516A1 (en) * | 2015-04-09 | 2016-10-13 | Em Microelectronic-Marin Sa | Method and device for processing uhf signals for an epc communication |
| US10671822B1 (en) * | 2019-09-11 | 2020-06-02 | RadicalID, Inc. | Multipurpose RFID transponder and a system for reading it |
Non-Patent Citations (1)
| Title |
|---|
| 杨晶晶: "基于 STM32 的智能门禁系统的设计", 《中国优秀硕士学位论文全文数据库信息科技辑》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1901201B1 (en) | RFID tag reader | |
| CN101743697A (en) | Label identification method, label anti-confliction method and RFID tag | |
| US8543056B2 (en) | Communication device, communication method, and program | |
| KR19980064800A (en) | Quadrature Phase Shift Keying Modulated Backscatter System | |
| US7590087B2 (en) | Methods for wireless data transmission between a base station and one or more transponders | |
| US8616456B2 (en) | Passive RFID transponder and RFID reader | |
| CN111723885A (en) | Industrial internet enterprise identification interaction system and implementation method thereof | |
| US7342481B2 (en) | Method and circuit arrangement for wireless data transmission | |
| US8183981B2 (en) | Passive tag with oscillator circuit and frequency identification system utilizing the same | |
| CN103714375A (en) | Active tag and radio frequency front-end chip thereof | |
| CN106508106B (en) | For RF identification read write line to label communication means | |
| US9001931B2 (en) | Method and device for digital modulation with low transition density | |
| CN110225497B (en) | Communication device, communication system, and communication method | |
| CN113285925A (en) | Communication protocol based on low-cost flexible printed label | |
| CN102043936A (en) | Information transmission method and system in radio frequency identification system | |
| CN1862565B (en) | Coding method for passive RF identifying system | |
| US20220027701A1 (en) | A multi-protocol rfid tag and system | |
| CN101989329B (en) | Data encoding method applying in radio frequency identification system | |
| KR20040027305A (en) | Circuit for generating clock signal and decoding data signals in contactless integrated circuit card | |
| US9385902B2 (en) | Apparatus and method for transmitting tag | |
| US11770156B2 (en) | System and method for managing communication between contactless devices | |
| KR20150124887A (en) | Tag transmission apparatus and transmitting method thereof | |
| US6697419B1 (en) | Digital transmission method | |
| KR100983246B1 (en) | RFID reader capable of short-range communication and method of short-range communication using RDF | |
| US20050111473A1 (en) | Method for coding a sequence of data bits, in particular for transmission via an air interface |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210924 Address after: 315000 room 2903-4, No. 1, ningchuang technology center, Panhuo street, Yinzhou District, Ningbo City, Zhejiang Province Applicant after: Ningbo Yuanxin Electronics Co.,Ltd. Applicant after: RISING (DALIAN) Co.,Ltd. Address before: 315000 room 2903-4, No. 1, ningchuang technology center, Panhuo street, Yinzhou District, Ningbo City, Zhejiang Province Applicant before: Ningbo Yuanxin Electronics Co.,Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210820 |