CN100375975C - RFID device based on 802.11 b - Google Patents
RFID device based on 802.11 b Download PDFInfo
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- CN100375975C CN100375975C CNB2006100772962A CN200610077296A CN100375975C CN 100375975 C CN100375975 C CN 100375975C CN B2006100772962 A CNB2006100772962 A CN B2006100772962A CN 200610077296 A CN200610077296 A CN 200610077296A CN 100375975 C CN100375975 C CN 100375975C
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- microprocessor
- label
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Abstract
The present invention relates to an RFID device based on 802.11b, which comprisess a microprocessor (1), a wireless communication module (2) based on 802.11b, a reset circuit (3), a real-time clock (4), a crystal oscillator (5), a memory (6), a reader (7), a power management part (8), a label (9), a buzzer and a system bus extension. The terminal is integrated with an embedded operating system-uClinux, a CPU hardware platform with an ARM structure, an RFID radio frequency device, the 802.11b wireless communication protocol, etc. The reader sends radio frequency signals of certain frequency through a transmitting antenna. Induced current is generated when the label enters a working area of a transmitting antenna, the label obtains energy and is activated, and self-codes and other information are sent out through a built-in transmitting antenna of a card. A system receiving antenna receives carrier signals sent by the label, the carrier signals are transmitted to the reader by an antenna regulator, and the reader carries out demodulation and decoding on the received signals and sends the received signals to a background main system for the implementation of relative processing. The signals are stored in a user data save area, and finally through the batch processing of the 802.11b wireless communication protocol, data is transmitted to a user's PC for further analysis processing. The device can be extensively used for information acquisition of electronic labels in mobile operation of commercial retail, manufacture, assembly, logistics and storage, medical health care, automatic fee charging of roads, etc.
Description
Technical field
The invention belongs to the EDP technology field, particularly a kind of radio frequency identification device.
Background technology
802.11b be general in the world a kind of wireless communication protocol.RFID (Radio FrequencyIdentification) i.e. is " radio frequency identification technology ", be a kind of contactless automatic identification technology, it adopts the noncontact mode by radiofrequency signal, automatically recognition objective object and obtain related data need not manual intervention.Wireless version as bar code, rfid system has the not available waterproof of bar code, antimagnetic, high temperature resistant, long service life, read that distance is big, data can encrypt, store that data capacity is big, the canned data change waits advantage freely on the label, can work in various rugged surroundings.It is used and just greatly reduces the logistics transportation of article and the expense of stock control, brings revolutionary variation for industries such as retail, logistics.
The RFID technology utilizes wireless radio frequency mode to carry out the noncontact bidirectional data transfers between reader and label (radio-frequency card), to reach the purpose of Target Recognition and exchanges data.Abroad, REID has been widely used in various fields such as industrial automation, business automation, communications and transportation control and management, almost dabbles the every bit of people's life.How under prerequisite cheaply, promptly and accurately obtain product information, guarantee the real-time of communication and the cheap property of communication fee, become each civilian consumer goods manufacturing enterprise and logistic storage and press for one of problem of solution.
RFID is by hardware technology, software engineering and the combination of the two, by wireless radio-frequency realized the obtaining of Item Information, deciphered, recognition function automatically such as communication.Greatly reduce the logistics transportation of article and the expense of stock control.The enterprise that has the independent intellectual property right product at present is considerably less, and sum is no more than 35 families, and price height, communication fee height, operation be difficult for, and it requires configuration condition higher, and is higher to user's competency profiling, is not suitable for China's national situation.
Summary of the invention
The purpose of this invention is to provide the RFID device that a kind of cost is low, expense is low.The rfid system that reader, antenna and label constituted of this device, except the universal performance that should possess above introduction, also, adopt the wireless communication protocol of 802.11b, fill up domestic radio frequency system and utilize the 802.11b technology to carry out the blank of wireless telecommunications in conjunction with China's national situation; This system can provide efficient and detailed control to kinds of goods in supply chain, the transparency of supply chain is improved greatly, and real-time tracking supply chain article have Anywhere been eliminated the manual errors on each link in the past simultaneously, easy and simple to handle, the user is left-hand seat easily.
The present invention includes the expansion of microprocessor, wireless communication module, reset circuit, real time clock, crystal oscillator, storer, reader, power management, label and hummer and system bus based on 802.11b; Wherein based on the corresponding SPI-MOSI that connects microprocessor of port of the wireless communication module of 802.11b, SPI-MISO, SPI-CLK, SPI-INT, the SPI-SS port, the corresponding RESET port that connects microprocessor of the port of reset circuit, corresponding SCL and the SDA port that connects microprocessor of the port of real time clock, the corresponding XTAL1 that connects microprocessor of the port of crystal oscillator, the XTAL2 port, corresponding A1～A22 the port that connects microprocessor of the address wire port of storer, corresponding D0～D15 the port that connects microprocessor of data line ports, corresponding D0～the D7 that connects microprocessor of the port of reader, WE, OE, the ALE port, the input end of reader is connected on the microprocessor by the reader interfaces circuit, and the input of hummer utilizes the GPIO mouth control of CPU.Also be solidified with part software Firmware in the FLASH memory chip.
The present invention is the high-performance radio frequency system that wireless radio-frequency, mobile computing and 802.11b wireless communication technology are combined.Reader sends the radiofrequency signal of certain frequency by emitting antenna, produces induction current when label enters the emitting antenna perform region, and label obtains energy and is activated, and information such as self coding are sent by blocking built-in transmitting antenna; System's receiving antenna receives the carrier signal of sending from label, be sent to reader through the antenna adjustments device, reader carries out the demodulation sign indicating number to the signal that receives and delivers to the backstage main system then and carry out relevant treatment, be stored in the user data conservation zone, by the batch processing of 802.11b wireless communication protocol data transmission be further analyzed processing to user's PC at last.
Radio communication of the present invention is integrated embedded OS---uClinux, ARM structure C PU hardware platform, RFID radio-frequency unit and 802.11b etc.Cost of the present invention is low, simple to operate, carries out the wireless transmission of information by the 802.11b technology, and mobility is strong, real-time is high, has filled up domestic radio frequency system and has utilized the 802.11b technology to carry out the blank of wireless telecommunications; Be mainly used in and sell terminal information acquisition; Cooperate back-end data management and analysis software can make up the management system of a cover science, intelligence, be particularly suitable for the occasion that product inventory and logistics management, commodity distribution and maintenance etc. disperse, flow; Be to make the enterprise operator promptly grasp market information, and then form correct decisions, make enterprise in intense market competition, be in the invincible position, obtain the higher economic benefit and the ideal tools of social benefit; Can be widely used in mobile operating electronic label information collections such as retailing, the manufacturing and assembling, logistic storage, health care, the automatic charge of road.
Description of drawings
Accompanying drawing 1 is the functional block diagram of the embodiment of the invention
Accompanying drawing 2 is the logic theory block diagram of the embodiment of the invention
Accompanying drawing 3 is the CPU schematic diagram of the embodiment of the invention
Accompanying drawing 4 is the storer schematic diagram of the embodiment of the invention
Accompanying drawing 5 is the reader schematic diagram of the embodiment of the invention
Accompanying drawing 6 is the 802.11b wireless module BGW200 schematic diagram of the embodiment of the invention
Accompanying drawing 7 is the electric power management circuit schematic diagram of the embodiment of the invention
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are specifically described:
With reference to the accompanying drawings 1,2, the embodiment of the invention comprises microprocessor (1), the wireless communication module (2) based on 802.11b, reset circuit (3), real time clock (4), crystal oscillator (5), storer (6), reader (7), power management (8), label (9) and hummer and system bus expansion; Wherein based on the corresponding SPI-MOSI that connects microprocessor of port of the wireless communication module (2) of 802.11b, SPI-MISI, SPI-CLK, SPI-INT, the SPI-SS port, the corresponding RESET port that connects microprocessor of the port of reset circuit (3), corresponding SCL and the SDA port that connects microprocessor of the port of real time clock (4), the corresponding XTAL1 that connects microprocessor of the port of crystal oscillator (5), the XTAL2 port, corresponding A1～A22 the port that connects microprocessor of the address wire port of storer (6), corresponding D0～D15 the port that connects microprocessor of data line ports, corresponding D0～the D7 that connects microprocessor of the port of reader (7), WE, OE, the ALE port, the input end of reader is connected on the microprocessor by the reader interfaces circuit, and the input end of hummer is connected on the P3.24 port of microprocessor.
With reference to the accompanying drawings 3～7, in embodiments of the present invention, be used for the both-way communication of LPC2210 system and other application systems based on the wireless communication module (2) of 802.11b; Reset circuit (3) can be finished system power-on reset; Real time clock (4) is used for providing date and time to system, and the operator can obtain the current accurate running time; Crystal oscillator (5) is for system provides work clock, and it is by the work clock of PLL circuit frequency multiplication in the cpu chip as microprocessor: FLASH ROM part can be deposited tested user application, embedded OS or other in the storer (6) needs the user data preserved etc. after system's power down; Main region when the SDRAM part is moved as system, system and user data, storehouse all are arranged in SDRAM; Reader (7) is used for reading and write the information in the label (9), and sends information to the LPC2210 system; Label (9) is formed each label by coupling element and chip and is had unique electronic code, attached to identifying destination object on the object; The transmission of radiofrequency signal is carried out in reader and label inside by antenna; Power management module (8) needs the peripheral circuit power supply of power supply to LPC2210 and other; Data bus, address bus and necessary control bus have been drawn in the system bus expansion, are convenient to the particular demands of user according to self, the expansion peripheral circuit.
The components and parts model that the embodiment of the invention adopted is as shown in the table:
| The components and parts title | Model | Encapsulation |
| CPU | LPC2210 | LQFP144 |
| Storer | S71PL064JAOBAWOP | 56BALL?FBGA |
| Clock chip | X1208V8I | TSSOP8 |
| Chip resets | IMP811SEUS-T | SOT-143 |
| Power management chip | SP6201-1.8 | SOT23-5 |
| Power management chip | SP6201-3.0 | SOT23-5 |
| Power management chip | SP6201-3.3 | SOT23-5 |
| Power management chip | SP6648 | MSOP-10 |
| Photodiode | PD204-6C | LED |
| Reader | RC500 | TSSOP32 |
| Wireless communication module based on 802.11b | BGW200 | QUAD68 |
| Label | MIFARE |
Function that the embodiment of the invention has reached and target:
(1) reader adopts the noncontact mode by radiofrequency signal, need not manual intervention;
(2) data storage capacity can realize dynamic expansion by changing chip in the main frame, and basic configuration is the 24M byte;
(3) support energy-conservation setting.The user can be provided with automatic shutdown time, sound ON/OFF etc.When not having the user to operate under the open state, system changes battery saving mode automatically over to; Never user's operation in the time of setting, system shuts down automatically with energy-conservation after can preserving user data;
(4) high-speed moving object can be discerned and also a plurality of labels can be discerned simultaneously, swift and convenient to operate;
(5) can be in supply chain provide efficient and detailed control to kinds of goods, improve the transparency of supply chain, the object of real-time tracing location supply chain adhesive label has Anywhere been eliminated the manual errors on each link in the past.
(6) waterproof, antimagnetic, high temperature resistant, long service life, to read distance big; Low-power consumption, electronics antijamming capability are strong, real-time communication, communication cost are low; Can work in various rugged surroundings;
(7) data can encrypt, store that data capacity is big, the canned data change waits advantage freely on the label.
Concrete technical indicator:
| System | CPU | 32-bit reduced instruction set computer RISC |
| Storer | RAM：8MB FLASH?ROM：16MB | |
| Reader | Standard | ISO/IEC?14443A |
| Read distance | 100-300mm | |
| Label | Mifare series | ISO/IEC?14443A |
| Wireless telecommunications | Interface | Wireless (contactless type) |
| Standard | Follow the 802.11b standard | |
| Control protocol | Half-duplex | |
| Communication distance | 100-300 rice | |
| Power supply | Main battery | Alkalescence AA battery |
| The main battery life-span | About 100 hours (normal temperature, bias light are closed, per 10 seconds read one time bar code) | |
| Reserve battery | Lithium battery | |
| Size and weight | Size | Be about 55 (W) x 140 (L) x, 35 (H) millimeter |
| Weight | Be about 182 grams (comprising battery) | |
| Working environment | Temperature | -5 to 50 |
| Humidity | ||
| 5% to 95% non-condensing |
| Water proof and dust proof | IP54 | |
| Drop distance | 120 centimetres (freely falling body) |
Claims (3)
1. based on the RFID device of 802.11b, it is characterized in that comprising: microprocessor (1), wireless communication module (2), reset circuit (3), real time clock (4), crystal oscillator (5), storer (6), reader (7), power management (8), label (9) and system bus expansion based on 802.11b; Wherein based on the corresponding SPI-MOSI that connects microprocessor of port of the wireless communication module (2) of 802.11b, SPI-MISI, SPI-CLK, SPI-INT, the SPI-SS port, the corresponding RESET port that connects microprocessor of the port of reset circuit (3), corresponding SCL and the SDA port that connects microprocessor of the port of real time clock (4), the corresponding XTAL1 that connects microprocessor of the port of crystal oscillator (5), the XTAL2 port, corresponding A1～A22 the port that connects microprocessor of the address wire port of storer (6), corresponding D0～D15 the port that connects microprocessor of data line ports, corresponding D0～the D7 that connects microprocessor of the port of reader (7), WE, OE, the ALE port, the input end of reader is connected on the microprocessor by the reader interfaces circuit.
2. the RFID device based on 802.11b according to claim 1 is characterized in that: also comprise hummer; The input end of hummer is connected on the P3.24 port of microprocessor (1).
3. the REID device based on 802.11b according to claim 1 is characterized in that: also be solidified with part software Firmware in described storer (6) the FLASH chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100772962A CN100375975C (en) | 2006-04-26 | 2006-04-26 | RFID device based on 802.11 b |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100772962A CN100375975C (en) | 2006-04-26 | 2006-04-26 | RFID device based on 802.11 b |
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| Publication Number | Publication Date |
|---|---|
| CN1858770A CN1858770A (en) | 2006-11-08 |
| CN100375975C true CN100375975C (en) | 2008-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100772962A Expired - Fee Related CN100375975C (en) | 2006-04-26 | 2006-04-26 | RFID device based on 802.11 b |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101242420B (en) * | 2008-03-11 | 2010-12-15 | 北京航空航天大学 | RFID sensing system based on IEEE802.15.4 standard |
| CN101308367B (en) * | 2008-07-04 | 2010-06-16 | 华中科技大学 | Mixed flow assembly line intelligent material gallow device possessing visualized monitoring function |
| CN102196604A (en) * | 2010-03-10 | 2011-09-21 | 国民技术股份有限公司 | Wireless network card device as well as radio frequency identification system and method |
| CN102497215B (en) * | 2011-10-26 | 2014-08-20 | 中国兵器工业集团第二一四研究所苏州研发中心 | Miniature wireless signal receiving and processing circuit |
| CN104143106B (en) * | 2014-07-03 | 2018-01-09 | 深圳麦格米特电气股份有限公司 | A kind of antenna system of track traffic electronic tag automatic identification |
| CN104787461A (en) * | 2015-04-24 | 2015-07-22 | 广东海兴塑胶有限公司 | Preservation box with RFID identification function |
| CN105046440A (en) * | 2015-07-31 | 2015-11-11 | 天津市青创空间科技企业孵化器有限公司 | Portable intelligent management system for electronic information product |
| US10592844B2 (en) | 2015-09-29 | 2020-03-17 | Amazon Technologies, Inc. | Managing notifications of a delivery method based on an active device |
| WO2017059112A1 (en) * | 2015-09-29 | 2017-04-06 | Amazon Technologies, Inc. | Managing notifications of a delivery method based on an active device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1445964A (en) * | 2003-03-03 | 2003-10-01 | 北京三明商用电子设备有限公司 | Wireless network access switching port |
| CN1500330A (en) * | 2001-11-27 | 2004-05-26 | ���ṫ˾ | Communication equipment and method thereof |
| US20050285732A1 (en) * | 2004-06-25 | 2005-12-29 | Sengupta Uttam K | Radio frequency identification based system to track consumption of medication |
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2006
- 2006-04-26 CN CNB2006100772962A patent/CN100375975C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1500330A (en) * | 2001-11-27 | 2004-05-26 | ���ṫ˾ | Communication equipment and method thereof |
| CN1445964A (en) * | 2003-03-03 | 2003-10-01 | 北京三明商用电子设备有限公司 | Wireless network access switching port |
| US20050285732A1 (en) * | 2004-06-25 | 2005-12-29 | Sengupta Uttam K | Radio frequency identification based system to track consumption of medication |
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| CN1858770A (en) | 2006-11-08 |
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Granted publication date: 20080319 Termination date: 20140426 |