CN102855503A - RFID (Radio Frequency Identification Devices) loop antenna array monitoring system and monitoring control method - Google Patents
RFID (Radio Frequency Identification Devices) loop antenna array monitoring system and monitoring control method Download PDFInfo
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- CN102855503A CN102855503A CN 201110174007 CN201110174007A CN102855503A CN 102855503 A CN102855503 A CN 102855503A CN 201110174007 CN201110174007 CN 201110174007 CN 201110174007 A CN201110174007 A CN 201110174007A CN 102855503 A CN102855503 A CN 102855503A
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Abstract
The invention relates to an RFID (Radio Frequency Identification Devices) loop antenna array monitoring system and a monitoring control method. The system comprises an RFID antenna module which has a switching address decoder, a special RFID read-write monitoring controller which comprises an antenna switching address encoder and an antenna switching address bus output interface, a radio frequency coaxial cable bus which is connected with the antenna module, a T-shaped three-way connector and a switching address bus cable. The method comprises the steps of numbering and positioning the antenna modules in an RFID loop antenna array one by one to build an antenna switching address comparison table, opening an appointed RFID antenna according to an antenna switching address in the antenna switching address comparison table, and realizing the read-write operations such as saving, searching and positioning, registration and the like to RFID labels in a coverage area of the loop antenna array. By using the RFID loop antenna array monitoring system and the monitoring control method, the coverage range of the RFID system can be greatly expanded with low cost, the whole system is concise in line, flexible in arrangement, stable and reliable in work and relatively wide in application range, and firm foundation is laid for the wide application of the RFID and the further popularization and development of the area positioning and monitoring technology.
Description
Technical field
The present invention relates to RFID radio RF recognition technology field, particularly RFID multiple spot Monitoring and Positioning technical field on a large scale specifically refers to a kind of RFID multi-antenna array monitoring system and monitoring aerial control method.
Background technology
RFID (Radio Frequency Identification) is a kind of radio RF recognition technology, because high frequency (frequency of operation is generally 13.56MHz) system recognition close together (is generally 0.1～0.3 meter, maximum is no more than 1 meter), limited the coverage of system; And ultrahigh frequency is (although 400MHz～2.4GHz) the recognition distance of system can surpass more than 3 meters, but owing to easily being absorbed by water, uhf electromagnetic wave decays, again easily by metallic reflection and EVAC (Evacuation Network Computer Model) work, in actual use, usually because the blocking of material (such as high water-bearing articles, human body, animal body etc.) that is subject to liquid container or is rich in moisture, and the interference of metal (metallic article that is identified, container, warehouse shelf etc.), cause the ultrahigh frequency RFID system works unusual; And the ultrahigh frequency RFID system distinguishes on a large scale apart from bringing again the not high inherent shortcoming of system accuracy.
In order to address the above problem, a feasible way is laid more antenna exactly, and guarantees that each antenna works in its reliable reach.By lay a large amount of antennas on a large scale, reach expansion sensing range (for radio frequency system), improve the purpose of system works stability and location accuracy (for the ultrahigh frequency system).For this reason, people have proposed a series of many antennas of RFID expansion scheme, and from four (eight) basic antenna read write lines, to many antenna branch device that can connect tens antennas, but practical application effect is not ideal.Subject matter is that these many antennas expanding systems all take tree-like branch connected mode, switch level too many (branch system that connects 32 antennas needs through 5 layers of switching), cable is complicated, (each switches level 1～2dB), and any one medial fascicle contact fault all can cause the inefficacy in blocks of secondary contact and antenna not only to cause serious insertion loss; Because the terminal antenna interface can't initiatively return test signal, read-write controller also just can't be understood the break-make situation of each Branching Antenna link, and the reliability of system works can't ensure.In addition, because the branch port quantity of each level standard antenna branch switch module is fixed, can't adjust flexibly according to the needs of using.
Summary of the invention
The objective of the invention is to have overcome above-mentioned shortcoming of the prior art, provide a kind of connect simple, expansion is flexible, with low cost, stable and reliable working performance, RFID perimeter antenna array monitoring system and monitoring and control method that the scope of application is extensive.
In order to realize above-mentioned purpose, RFID perimeter antenna array monitoring system of the present invention and monitoring and control method are as follows:
This RFID perimeter antenna array monitoring system, its principal feature is, described system comprises and carries the RFID Anneta module that switches address decoder, comprises antenna and switch the radio frequency coaxial-cable bus of address scrambler is connected the address bus output interface with antenna dedicated RF ID read-write monitor controller, connection Anneta module and T-shaped three-way connector, switching address bus cable.
RFID Anneta module in this RFID perimeter antenna array monitoring system comprises switching address decoder and the unique address coding of this module in annular array.
Dedicated RF ID in this RFID perimeter antenna array monitoring system read-write monitor controller comprises the switching address scrambler that the switching address decoder with Anneta module is complementary and switches the address bus output interface.
Anneta module in this RFID perimeter antenna array monitoring system and dedicated RF ID read-write monitor controller and other Anneta modules connect into the ring bus link by radio-frequency cable and T-shaped three-way connector.
It is initial that switching address bus cable in this RFID perimeter antenna array monitoring system switches the address bus output interface from the antenna that connects dedicated RF ID read-write monitor controller, connects one by one the switching address bus interface of each Anneta module in the array with the chrysanthemum link mode.
This RFID perimeter antenna array monitoring system is applicable to high frequency (13.56MHz) rfid system and ultrahigh frequency, and (frequency range is the rfid system of 400MHz～5.8GHz).
This utilizes above-mentioned antenna array system to carry out the method for distributed RFID tag readable degree location on a large scale, and its principal feature is that described method may further comprise the steps:
(1) with in the unique number (switching address) of the Anneta module that connects in the annular link array and the dedicated RF ID read-write monitor controller that the residing monitoring location coding input of this Anneta module array connects, sets up antenna and switch address translation table;
(2) the dedicated RF ID of array system read-write monitor controller is when carrying out read-write operation, at first switch address translation table from antenna and take out an antenna preset numbers, be transferred to the switching address scrambler and be converted to the switching geocoding, then switch address bus by antenna and send out, open corresponding antenna;
When the code that (3) transmits on switching the address bus cable and certain Anneta module preset numbers were complementary, this module connected the HF switch closure of toroidal radio frequency bus T-type three-way connector, connects the RFID antenna;
(4) after dedicated RF ID read-write monitor controller determines that the Anneta module of appointment is opened, start radio-frequency module, by selected RFID antenna read/write RFID label;
(5) if special-purpose read-write monitor controller can't determine whether the Anneta module of appointment is open-minded, then judge this antenna link fault, stop current operation, and send fault interrupting information to upper master control system;
(6) after dedicated RF ID read-write monitor controller is finished read/write operation to the RFID label of selected antenna coverage areas, close radio-frequency module, then switch the address translation table from antenna and read next antenna preset numbers, be transferred to the switching address scrambler and be converted to the switching geocoding, switching address bus by antenna sends out, close previous selected RFID antenna, and open next RFID antenna;
(7) after dedicated RF ID read-write monitor controller is finished required read/write operation, switching " address blank " (number value that does not namely have the respective antenna module of address bus transmission, minimum value normally), close all the RFID antennas in this annular array.
Dedicated RF ID read-write monitor controller can be one by one in turn transmitting antenna switch antenna preset numbers (switching address) in the address translation table, open one by one all the RFID antennas in this annular link, RFID label to this perimeter antenna array overlay area, road carries out " taking inventory " operation, obtains the distribution situation of the RFID label (and the article that carry these labels) in the array overlay area.
RFID perimeter antenna array monitoring system of the present invention can be according to the antenna preset numbers that reads each individual tag and monitoring location coding, determine the particular location of each label in this aerial array overlay area, reach the accurate location to individual RFID label (and the article that carry this label).
RFID perimeter antenna array monitoring system and the monitoring and control method of this invention have been adopted, handoff functionality with aerial array is distributed to each Anneta module dexterously, not only greatly reduced the switching level, reduced line loss, and can be by the break-make of conversation test input antenna link between special-purpose read-write monitor controller and the Anneta module, safeguards system work reliable and stable; The simple in circuits of whole system is disposed flexibly, realizes that cost is lower, and the scope of application is comparatively extensive, for the widespread use of RFID and zone location monitoring technology further popularize and solid foundation has been established in development.
Description of drawings
Fig. 1 is that the integral body of RFID perimeter antenna array monitoring system of the present invention consists of synoptic diagram.
Fig. 2 is the application synoptic diagram of RFID perimeter antenna array monitoring system of the present invention.
Embodiment
In order more clearly to understand technology contents of the present invention, describe in detail especially exemplified by following examples.
See also shown in Figure 1, this RFID perimeter antenna array monitoring system is comprising carrying the RFID Anneta module (2) that switches address decoder (1), comprising antenna and switch the radio frequency coaxial-cable bus (6) of address scrambler (3) is connected address bus output interface (4) with antenna dedicated RF ID read-write monitor controller (5), connection Anneta module (2) and T-shaped three-way connector (7), switching address bus cable (8); Described RFID frequency of operation can be high frequency (13.56MHz) or ultrahigh frequency (frequency range 400MHz～5.8GHz).
Wherein, described radio frequency coaxial-cable bus (6) connects into annular link, mainly is to improve the reliability of system in order to prevent because a certain node in the bus links connects the subsequent node radio signal transmission of this node of fault effects.
See also shown in Figure 2ly, this utilizes above-mentioned system to carry out the method for distributed warehouse shelf position monitor again, comprising following steps:
(1) system determines the installation site of Anneta module (2) on shelf according to the reach of single RFID antenna, and a little is overlapping on the coverage border of adjacent antenna module, with the fully covering of assurance system to the shelf storage space;
(2) Anneta module (2) label that are installed on the shelf are numbered the location one by one, set up antenna switching controls address translation table;
(3) Anneta module (2) on each shelf is linked to be an independently cyclic system usually, conveniently administers and maintains; Antenna loop on one group of adjacent (4～5) shelf is connected on the dedicated RF ID read-write monitor controller (5) jointly, to reduce the system equipment cost;
The RFID warehouse shelf management system of (4) installing in the manner described above, can realize that the added registration of warehouse-in of stock article, undercarriage outbound are squared an account, taken inventory fast, the positioning searching function:
(a) when article are put into shelf, start the dedicated RF ID read-write monitor controller (5) of these shelf, read the RFID tag number on the article, the antenna number (being the goods yard numbering) of numbering and read label together with the shelf at this perimeter antenna array place uploads to inventory management system, the automatically new article of putting in storage of registration;
(b) after article take out shelf, start the dedicated RF ID read-write monitor controller (5) of these shelf, read the RFID tag number of residue article, the result of recognition compared with last time, pick out the tag number of not reading, submit to inventory management system as the data of these undercarriage article;
(c) when needs are made an inventory whole stock, inventory management system master control computer can send " taking inventory " instruction to the read-write monitor controller of the dedicated RF ID on all shelf (5), each dedicated RF ID read-write monitor controller (5) is generally investigated recognition to the shelf that this array covers simultaneously, in the cycle (usually being no more than 5 minutes) that only needs an array wheel to survey, can finish making an inventory of complete inventory;
(d) when needs are sought specific article (the RFID tag number of known these article), at first can be according to the shelf of storing in the inventory management system database and goods yard numbering, start corresponding dedicated RF ID read-write monitor controller (5) and RFID Anneta module (2), check product data, if find the numbering of coupling, then the pilot lamp on corresponding dedicated RF ID read-write monitor controller (5) and the Anneta module (2) glimmers the deposit position of marking object simultaneously; If in above-mentioned steps, fail to find the numbering (position that article are not registered in system) of coupling, then start " taking inventory " operation, distinguish the RFID label on all shelf, until find the RFID tag number of coupling comprehensively.
In the middle of reality is used, also this aerial array can be laid along a series of control main points, carry article (or personnel) dynamic of RFID label in the continuous monitoring on a large scale around the reference mark.
Claims (9)
1. RFID perimeter antenna array monitoring system, it is characterized in that described system comprises and carries the RFID Anneta module that switches address decoder, comprises antenna and switch the radio frequency coaxial-cable bus of address scrambler is connected the address bus output interface with antenna dedicated RF ID read-write monitor controller, connection Anneta module and T-shaped three-way connector, switching address bus cable.
2. RFID perimeter antenna array monitoring system according to claim 1, it is characterized in that the Anneta module in the described RFID perimeter antenna array monitoring system and dedicated RF ID read-write monitor controller and other Anneta modules connect into the ring bus link by radio-frequency cable and T-shaped three-way connector.
3. RFID perimeter antenna array monitoring system according to claim 2, it is characterized in that, it is initial that switching address bus cable in the described RFID perimeter antenna array monitoring system switches the address bus output interface from the antenna that connects dedicated RF ID read-write monitor controller, connects one by one the switching address bus interface of each Anneta module in the array with the chrysanthemum link mode.
4. each described RFID perimeter antenna array monitoring system in 3 according to claim 1, it is characterized in that the RFID Anneta module in this RFID perimeter antenna array monitoring system comprises switching address decoder and the unique address coding of this module in annular array.
5. each described RFID perimeter antenna array monitoring system in 3 according to claim 1, it is characterized in that dedicated RF ID in this RFID perimeter antenna array monitoring system read-write monitor controller comprises the switching address scrambler that the switching address decoder with Anneta module is complementary and switches the address bus output interface.
6. each described RFID perimeter antenna array monitoring system in 3 according to claim 1, it is characterized in that described RFID perimeter antenna array monitoring system is applicable to high frequency (13.56MHz) rfid system and ultrahigh frequency, and (frequency range is the rfid system of 400MHz～5.8GHz).
7. one kind is utilized system claimed in claim 1 to carry out that the distributed RFID label reads and the method for position monitor, it is characterized in that described method may further comprise the steps:
(1) with in the unique number (switching address) of the Anneta module that connects in the annular link array and the dedicated RF ID read-write monitor controller that the residing monitoring location coding input of this Anneta module array connects, sets up antenna and switch address translation table;
(2) the dedicated RF ID of array system read-write monitor controller is when carrying out read-write operation, at first switch address translation table from antenna and take out an antenna preset numbers, be transferred to the switching address scrambler and convert the switching geocoding to, then switch address bus by antenna and send out, open corresponding antenna;
(3) when antenna switches the code that transmits on the address bus cable and is complementary with certain Anneta module preset numbers, it is closed that this module connects the HF switch of toroidal radio frequency bus T-type three-way connector, connection RFID antenna;
(4) after dedicated RF ID read-write monitor controller determines that the Anneta module of appointment is opened, start radio-frequency module, by selected RFID antenna read/write RFID label;
(5) if special-purpose read-write monitor controller can't determine whether the Anneta module of appointment is open-minded, then judge this antenna link fault, stop current operation, and send fault interrupting information to upper master control system;
(6) after dedicated RF ID read-write monitor controller is finished read/write operation to the RFID label of selected antenna coverage areas, close radio-frequency module, then switch the address translation table from antenna and read next antenna preset numbers, be transferred to the switching address scrambler and be converted to the switching geocoding, switching address bus by antenna sends out, close previous selected RFID antenna, and open next RFID antenna;
(7) after dedicated RF ID read-write monitor controller is finished required read/write operation, switching " address blank " (number value that does not namely have the respective antenna module of address bus transmission, minimum value normally), close all the RFID antennas in this annular array.
8. according to claim 7ly carry out that the distributed RFID label reads and the method for position monitor, it is characterized in that, described dedicated RF ID read-write monitor controller can be one by one in turn transmitting antenna switch antenna preset numbers (switching address) in the address translation table, open one by one all the RFID antennas in this annular link, RFID label to this perimeter antenna array overlay area, road carries out " taking inventory " operation, obtains the distribution situation of the RFID label (and the article that carry these labels) in the array overlay area.
9. according to claim 7ly carry out that the distributed RFID label reads and the method for position monitor, it is characterized in that, can be according to the antenna preset numbers that reads each individual tag and monitoring location coding, determine the particular location of each label in this aerial array overlay area, reach the accurate location to individual RFID label (and the article that carry this label).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110174007 CN102855503A (en) | 2011-06-27 | 2011-06-27 | RFID (Radio Frequency Identification Devices) loop antenna array monitoring system and monitoring control method |
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| CN 201110174007 CN102855503A (en) | 2011-06-27 | 2011-06-27 | RFID (Radio Frequency Identification Devices) loop antenna array monitoring system and monitoring control method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104463282A (en) * | 2014-12-12 | 2015-03-25 | 上海上大鼎正软件股份有限公司 | Leaky-wave antenna and radio frequency identification reader-writer integrated cable type device |
| CN106815540A (en) * | 2017-01-19 | 2017-06-09 | 厦门芯曙光科技有限公司 | RFID location system based on multi-mode communication |
| CN107886019A (en) * | 2016-09-30 | 2018-04-06 | 西门子公司 | Cascade device and antenna cascade system |
| CN110276224A (en) * | 2019-06-24 | 2019-09-24 | 张楠 | It is a kind of can flexible combination the channel RFID gate array |
| CN110764444A (en) * | 2019-10-10 | 2020-02-07 | 苏州浪潮智能科技有限公司 | Control system, switch, and method for controlling execution device |
| CN111700395A (en) * | 2020-05-11 | 2020-09-25 | 常熟市第一人民医院 | Commodity shelf and warehouse management system using same |
| WO2021072920A1 (en) * | 2019-10-15 | 2021-04-22 | 苏州车付通信息科技有限公司 | Cascaded rf bus system |
-
2011
- 2011-06-27 CN CN 201110174007 patent/CN102855503A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104463282A (en) * | 2014-12-12 | 2015-03-25 | 上海上大鼎正软件股份有限公司 | Leaky-wave antenna and radio frequency identification reader-writer integrated cable type device |
| CN107886019A (en) * | 2016-09-30 | 2018-04-06 | 西门子公司 | Cascade device and antenna cascade system |
| CN107886019B (en) * | 2016-09-30 | 2021-03-05 | 西门子公司 | Cascade device and antenna cascade system |
| CN106815540A (en) * | 2017-01-19 | 2017-06-09 | 厦门芯曙光科技有限公司 | RFID location system based on multi-mode communication |
| CN110276224A (en) * | 2019-06-24 | 2019-09-24 | 张楠 | It is a kind of can flexible combination the channel RFID gate array |
| CN110764444A (en) * | 2019-10-10 | 2020-02-07 | 苏州浪潮智能科技有限公司 | Control system, switch, and method for controlling execution device |
| US11650950B2 (en) | 2019-10-10 | 2023-05-16 | Inspur Suzhou Intelligent Technology Co., Ltd. | Control system, switch, and method for controlling execution device |
| WO2021072920A1 (en) * | 2019-10-15 | 2021-04-22 | 苏州车付通信息科技有限公司 | Cascaded rf bus system |
| CN111700395A (en) * | 2020-05-11 | 2020-09-25 | 常熟市第一人民医院 | Commodity shelf and warehouse management system using same |
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