CN102855507B

CN102855507B - RFID recognition system

Info

Publication number: CN102855507B
Application number: CN201210289211.2A
Authority: CN
Inventors: 黄勇
Original assignee: GUANGZHOU HAIXING INTERNET OF THINGS INFORMATION TECHNOLOGY Co Ltd
Current assignee: GUANGZHOU HAIXING INTERNET OF THINGS INFORMATION TECHNOLOGY Co Ltd
Priority date: 2012-08-14
Filing date: 2012-08-14
Publication date: 2016-04-27
Anticipated expiration: 2032-08-14
Also published as: CN102855507A

Abstract

The present invention relates to a kind of RFID recognition system, said system comprises that a RFID reads sensor, the 2nd RFID reads sensor and pager, one RFID reads sensor and the 2nd RFID reads sensor and above-mentioned pager wired connection, one RFID reads sensor and the 2nd RFID reads sensor, for collecting the label information entering self identified region respectively; Above-mentioned pager, reads sensor and the 2nd RFID and reads for periodically reading a RFID label information that sensor collects.In the present invention, card amount is large, reading distance, reading speed are fast.

Description

RFID recognition system

Technical field

The present invention relates to radio-frequency (RF) identification (RadioFrequencyIdentification, RFID) technical field, particularly relate to a kind of RFID recognition system.

Background technology

In prior art, gate control system is applied in every field widely, such as factory garden, tourist attractions district, campus, warehouse etc., and RFID reads the part that sensor is gate control system, for campus:

RFID electronic identity card for students (power frequency is 2.4G) is the product be born with the theory of " Safe Campus " based on campus informatization, have the advantages that identification and multi-chip at a distance identify simultaneously, after sensor is read in school's doorway setting, can large discharge identification student flow, for entering school and the time of leaving school, to concentrate on the situation of some time periods very applicable, substantially increase turnover efficiency, the worry of the head of a family to children in school road safety can be alleviated.But existing gate control system is determined below existing, decipherment distance is near, speed is low, data volume is few, leak card many (as passive type label etc.).

Summary of the invention

The object of the invention is, a kind of RFID recognition system is provided, prior art decipherment distance is near, speed is low to solve, upper card amount less, leak the many shortcomings of card.

The invention provides a kind of RFID recognition system, said system comprises that a RFID reads sensor, the 2nd RFID reads sensor and pager, and an above-mentioned RFID reads sensor and the 2nd RFID reads sensor and above-mentioned pager wired connection,

An above-mentioned RFID reads sensor and the 2nd RFID reads sensor, for collecting the label information entering self identified region respectively;

Above-mentioned pager, reads sensor and the 2nd RFID and reads for periodically reading an above-mentioned RFID label information that sensor collects.

Whether preferably, an above-mentioned RFID reads sensor and the 2nd RFID reads sensor, effective for judging the label information collected, and the effective label information of buffer memory, abandon invalid label information;

Above-mentioned pager, issue synchronous clock source for timing and read sensor and the 2nd RFID reads sensor to a described RFID, and, for before reading tag information, read sensor with corresponding RFID and carry out time synchronized, and buffer memory read with each RFID read sensor last on the label information that calls time, carry out label according to the label information read simultaneously and come in and go out and adjudicate and export court verdict.

Preferably, an above-mentioned RFID reads sensor and the 2nd RFID reads sensor, for before the effective label information of buffer memory, carries out protocol analysis to above-mentioned label information;

Above-mentioned pager, for providing configuration interface for user, and reads configuration information that sensor and the 2nd RFID read sensor and is handed down to an above-mentioned RFID and reads sensor and the 2nd RFID reads sensor by an above-mentioned RFID wherein.

Preferably, above-mentioned RFID reads sensor and comprises radio frequency (RF) module, micro-control unit (MCU) and interface module, wherein,

Above-mentioned RF module, for collecting label information, and sends to above-mentioned MCU; And receive the configuration information that above-mentioned pager issues, and send to above-mentioned MCU;

Above-mentioned MCU, for according to the configuration information received, is configured self; According to the command frame format that Handshake Protocol specifies, judge that whether the label information received is effective, and protocol analysis is carried out to effective label information, and the label information after caching protocol parsing, abandon invalid label information;

Above-mentioned interface module, for above-mentioned pager interactive information.

Preferably, above-mentioned RFID reads sensor and also comprises storer, for storing effective label information.

Preferably, an above-mentioned RFID is read sensor and the 2nd RFID and reads sensor and communicated with above-mentioned pager by RS485 interface.

Preferably, an above-mentioned RFID reads sensor and is arranged in the in/out mouth in the region needing monitoring, and above-mentioned 2nd RFID reads sensor and is arranged on outside the in/out mouth of above-mentioned zone.

Preferably, the length of the command frame that above-mentioned Handshake Protocol specifies is 10 bytes, and wherein, 1-4 byte representation tag number, the 5th byte is reserved place, 6-9 byte representation label locator number, the 10th byte representation tag state.

Preferably, the 1bit of the 10th byte of mentioned order frame is conductively-closed mark, and 2bit is opening flag, and 3bit is for proceeding to dormancy mark, and 4bit is shake mark, and 5bit, 7bit and 8bit are sky, and 6bit is under-voltage mark.

Preferably, above-mentioned label is electronic identity card for students.

In the present invention card amount large, read that distance, reading speed are fast, to leak card few, and can according to label information, grasp label personnel or goods and whether to turn back situation, effectively solve the tracking problem of the crowd of large discharge or goods etc.

Accompanying drawing explanation

Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a part of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:

Fig. 1 is the theory diagram of RFID recognition system preferred embodiment of the present invention;

Fig. 2 is the theory diagram that in Fig. 1, RFID reads sensor preferred embodiment.

Embodiment

In order to make technical matters to be solved by this invention, technical scheme and beneficial effect clearly, understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.

As shown in Figure 1, be the theory diagram of RFID recognition system preferred embodiment of the present invention; The present embodiment comprises that a RFID reads sensor 01, the 2nd RFID reads sensor 02 and pager 03, wherein:

One RFID reads sensor 01 and the 2nd RFID reads sensor 02, for collecting the label information entering self identified region respectively; According to the command frame format that Handshake Protocol specifies, judge that whether the label information collected is effective, protocol analysis is carried out and buffer memory to effective label information, abandons invalid label information; In the present invention, if the command frame format that the data layout of the label information received and Handshake Protocol specify is identical, then think that above-mentioned label information is effective, otherwise, think that above-mentioned label information is invalid.

In the present invention, the command frame format that the Handshake Protocol that RFID reads to use between sensor and label specifies is as shown in table 1, and the length of command frame is 10 bytes, wherein, 1-4 byte representation tag number, such as, if label is electronic identity card for students, then student number is the longest can be 32bit; If student number only uses 10bit wherein, then remain bit and fill with 0; 5th byte is reserved place, is defaulted as sky; 6-9 byte representation label locator number; 10th byte representation tag state, the 1bit of this byte is conductively-closed mark, 2bit is opening flag, 3bit is for proceeding to dormancy mark, 4bit is shake mark, and 5bit, 7bit and 8bit are sky, and 6bit is under-voltage mark, as shown in table 2, the value of its each bit is 1 or 0.In addition, 5bit, 7bit and 8bit are room, and no matter its value is 1 or 0, does not all represent any information.

Table 1

Table 2

bit

7（MS）

6

5

4

3

2

1

0（LS）

Implication

Empty

Under-voltage

Empty

Shake

Proceed to dormancy

Start

Conductively-closed

In table 1 and table 2, MS represents high-order, and LS represents low level.

According to mentioned order frame, in the present invention, label information comprises the number, position, state etc. of label.

Pager 03, for providing configuration interface for user, and reads configuration information that sensor 01 and the 2nd RFID read sensor 02 and is handed down to a RFID and reads sensor 01 and the 2nd RFID reads sensor 02 by a RFID wherein; Before reading tag information, read sensor with corresponding RFID and carry out time synchronized, periodically read a RFID and read sensor 01 and the 2nd RFID and read the label information that sensor 02 collects; And the label information that buffer memory reads, carry out label discrepancy according to the label information read simultaneously and adjudicate and export court verdict; Above-mentioned configuration information is same as the prior art, comprise device type, device address, command word, the length etc. of bag, it is different with the cycle that reading the 2nd RFID reads the label information in sensor 02 that pager reads the cycle that a RFID reads the label information in sensor 01, and the two can separated in time, such as 300 milliseconds, namely the cycle is to after date, read the label information that a RFID reads in sensor 01, then after 300 milliseconds, then read the label information that the 2nd RFID reads in sensor 02; And operationally in, circulate reading always; In addition, pager 03 carries out label discrepancy according to the label information read and adjudicates the court verdict obtained, and can export to host computer, also directly can export to user in this locality, and concrete which kind of mode of employing, user can configure as required voluntarily.In addition, described pager 03 also issues synchronous clock source for timing and reads sensor 01 and the 2nd RFID reads sensor 02 to a described RFID, and, buffer memory read with each RFID read sensor last on the label information that calls time, thus, can avoid the problem reading to occur Card Reader mistake when described different RF ID reads sensor, such pager 03 just clearly can know that the RFID before this read on earth reads the information that sensor 01 or the 2nd RFID read sensor 02.

One RFID reads sensor 01 and is arranged in the in/out mouth in the region needing monitoring, and the 2nd RFID reads sensor and is arranged on outside the in/out mouth of above-mentioned zone; The region such as if desired monitored is campus, then a RFID reads sensor 01 and is provided with in school gate, 2nd RFID reads sensor 02 and is arranged on outside school gate, and a RFID reads sensor 01 and the 2nd RFID reads sensor 02 and pager 03 wired connection, and is communicated by RS485 interface.

As shown in Figure 2, be the theory diagram that in Fig. 1, RFID reads sensor preferred embodiment; The present embodiment comprises RF module 10, MCU20, storer 30 and interface module 40, wherein,

RF module 10, for collecting label information, and sends to MCU20; And the configuration information that reception pager 03 issues, and send to MCU20;

MCU20, for according to the configuration information received, is configured self; According to the command frame that Handshake Protocol specifies, judge that whether the label information received is effective, and protocol analysis is carried out to effective label information, and the label information after protocol analysis is cached in external memory 30, invalid label information is abandoned;

Storer 30, for storing effective label information;

In the present invention, can also be external storer for storing the storer of effective label information.

Interface module 40, for pager 03 interactive information.

Above-mentioned explanation illustrate and describes the preferred embodiments of the present invention, but as previously mentioned, be to be understood that the present invention is not limited to the form disclosed by this paper, should not regard the eliminating to other embodiments as, and can be used for other combinations various, amendment and environment, and can in invention contemplated scope described herein, changed by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change do not depart from the spirit and scope of the present invention, then all should in the protection domain of claims of the present invention.

Claims

1. a RFID recognition system, is characterized in that, described system comprises that a RFID reads sensor, the 2nd RFID reads sensor and pager, and a described RFID reads sensor and the 2nd RFID reads sensor and described pager wired connection,

A described RFID reads sensor and the 2nd RFID reads sensor, for collecting the label information entering self identified region respectively;

Described pager, reads sensor and the 2nd RFID and reads for periodically reading a described RFID label information that sensor collects;

Described RFID reads sensor and comprises radio frequency module, micro-control unit MCU and interface module, wherein,

Described RF module, for collecting label information, and sends to described MCU; And receive the configuration information that described pager issues, and send to described MCU;

Described MCU, for according to the configuration information received, is configured self; According to the command frame format that Handshake Protocol specifies, judge that whether the label information received is effective, and protocol analysis is carried out to effective label information, and the label information after caching protocol parsing, abandon invalid label information; Described interface module, for described pager interactive information;

A described RFID reads sensor and is arranged in the in/out mouth in the region needing monitoring, and described 2nd RFID reads sensor and is arranged on outside the in/out mouth in described region.

2. whether system according to claim 1, is characterized in that, a described RFID reads sensor and the 2nd RFID reads sensor, effective for judging the label information collected, and the effective label information of buffer memory, abandon invalid label information;

Described pager, issue synchronous clock source for timing and read sensor and the 2nd RFID reads sensor to a described RFID, and, for before reading tag information, read sensor with corresponding RFID and carry out time synchronized, and buffer memory read with each RFID read sensor last on the label information that calls time, carry out label according to the label information read simultaneously and come in and go out and adjudicate and export court verdict.

3. system according to claim 2, is characterized in that, a described RFID reads sensor and the 2nd RFID reads sensor, for before the effective label information of buffer memory, carries out protocol analysis to described label information;

Described pager, for providing configuration interface for user, and reads configuration information that sensor and the 2nd RFID read sensor and is handed down to a described RFID and reads sensor and the 2nd RFID reads sensor by a described RFID wherein.

4. system according to claim 1, is characterized in that, described RFID reads sensor and also comprises storer, for storing effective label information.

5. system according to claim 4, is characterized in that, a described RFID is read sensor and the 2nd RFID and reads sensor and communicated with described pager by RS485 interface.

6. system according to claim 1, is characterized in that, the length of the command frame that described Handshake Protocol specifies is 10 bytes, wherein, 1-4 byte representation tag number, the 5th byte is reserved place, 6-9 byte representation label locator number, the 10th byte representation tag state.

7. system according to claim 6, it is characterized in that, the 1bit of the 10th byte of described command frame is conductively-closed mark, 2bit is opening flag, 3bit is for proceeding to dormancy mark, 4bit is shake mark, and 5bit, 7bit and 8bit are sky, and 6bit is under-voltage mark.

8. system according to claim 1, is characterized in that, described label is electronic identity card for students.