CN2702535Y - Antenna switching type radio-frequency scan object automatic positioning device - Google Patents
Antenna switching type radio-frequency scan object automatic positioning device Download PDFInfo
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- CN2702535Y CN2702535Y CN 200420003211 CN200420003211U CN2702535Y CN 2702535 Y CN2702535 Y CN 2702535Y CN 200420003211 CN200420003211 CN 200420003211 CN 200420003211 U CN200420003211 U CN 200420003211U CN 2702535 Y CN2702535 Y CN 2702535Y
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Abstract
The utility model relates to an automatic positioning device for positioning the object with a radio frequency tag card, in particular to a device which is capable of automatically searching for and positioning the object with a radio frequency tag card under a storing status. The antenna switching type radio-frequency scan object automatic positioning device comprises a radio frequency card reader 8 which is composed of a sing chip computer data processing circuit, a radio frequency emitting circuit and a radio frequency receiver circuit, and a radio frequency reading card antenna 1. The utility model is characterized in that a plurality of radio frequency reading card antennae 1 are connected with the radio frequency card reader 8 through an antenna switching device 4. The antenna switching device is composed of a computer communication interface, an antenna interface connected with the radio frequency card reader, a plurality of interfaces connected with the radio frequency reading card antenna and an antenna switching device 3 controlled by the single chip computer. The beneficial effect of the utility model is that the object with a radio frequency tag card and the radio frequency card reader realize automatically searching for and positioning the object at a large range without moving. Simultaneously, the number of the radio frequency card reader is reduced and then the utility model avoids the disturbance among the radio frequency signal, in addition, the structure of the system is simple.
Description
Technical field
The utility model relates to a kind of device that the target that has radio frequency marking card is located automatically, especially relates to a kind of device that the object that has radio frequency marking card that is in storing state is searched automatically and located.
Background technology
Present known REID mainly is made up of radio frequency reader device and radio frequency marking card, and the radio frequency reader device is by the data on transmitting-receiving radiofrequency signal (electromagnetic wave that has modulation signal) the read-write radio frequency marking card.In this technology, radio frequency marking card self not charged source be called passive radio frequency identification technique again.
The radio frequency reader device of passive radio frequency identification technique is made up of single-chip data treatment circuit, radio-frequency transmissions circuit, radio-frequency (RF) receiving circuit and radio frequency card reading antennas.The passive radio-frequency identification card is called contact type intelligent card or intelligent label again, and it is made up of an integrated circuit (IC) chip and continuous antenna.In the time of in radio frequency marking card enters radio frequency card reading antennas coverage, antenna on the radio frequency marking card receives by the radiofrequency signal of radio frequency card reading antennas emission and entrained energy, integrated circuit (IC) chip on the radio frequency marking card is activated and produces response signal, launch by the antenna on the radio frequency marking card, the radio frequency card reading antennas receives this response signal, and therefore the radio frequency reader device can get access to the data in the radio frequency marking card.Such radio frequency reader device can only be read and write the radio frequency marking card in the limited coverage of its antenna.Adopt this device the target that has radio frequency marking card in is on a large scale searched and to locate, two kinds of possible modes are arranged: the one, mobile radio reader device or the mobile target that has radio frequency marking card, make the radio frequency marking card on the target enter radio frequency card reading antennas coverage, but this mode is not easy to realize searching automatically and locating for the object that is in storing state; The 2nd, many cover radio frequency reader devices are installed, cover whole target zone of living in, but this mode makes the integrated complicated of whole system, cost is also higher, and the radiofrequency signal that adjacent device produces when working simultaneously tends to the phase mutual interference.Therefore present this radio frequency reader device is difficult to realize the target that has radio frequency marking card in is on a large scale searched automatically and located.
Summary of the invention
Be difficult to use in the deficiency that internal object is on a large scale searched automatically and located in order to overcome existing radio frequency reader device, the utility model provides a kind of antenna suitching type radio frequency reading target automatic positioning equipment.This device not only is easy to realize the searching automatically and locating of internal object on a large scale can also avoid the phase mutual interference between radiofrequency signal, and system configuration is simple.
The technical solution of the utility model is: a kind of antenna suitching type radio frequency reading target automatic positioning equipment comprises radio-frequency card reader 8 and the radio frequency card reading antennas 1 be made up of single-chip data treatment circuit, radio-frequency transmissions circuit, radio-frequency (RF) receiving circuit; It is characterized in that: a plurality of radio frequency card reading antennas 1 are connected with radio-frequency card reader 8 by antenna switcher 3; This antenna switcher 3 is by a Computer Communications Interface, an antennal interface that is connected with radio-frequency card reader, a plurality of interfaces that are connected with the radio frequency card reading antennas and be made up of monolithic processor controlled antenna switching circuit.Described antenna switching circuit mainly comprises decoding circuit 12 and high frequency relay 10; Each radio frequency card reading antennas 1 all links to each other with radio-frequency card reader 8 by a high frequency relay 10; Each output of decoding circuit 12 is by the break-make of a power amplifier 11 one of them high frequency relay 10 of control; Antenna switcher is switched the radio frequency card reading antennas according to the switching command that receives, and the radio frequency card reading antennas of appointment is connected to radio-frequency card reader.
Technique scheme essence is that existing radio frequency reader device is decomposed into radio-frequency card reader and radio frequency card reading antennas two parts, outside existing radio frequency reader device, increase an antenna switcher, the radio frequency card reading antennas no longer directly is connected with radio-frequency card reader, but is connected with radio-frequency card reader by antenna switcher.Antenna switcher is switched the radio frequency card reading antennas according to the switching command that receives, and the radio frequency card reading antennas of appointment is connected to radio-frequency card reader.
According to actual needs, a plurality of radio frequency card reading antennas are installed in all predetermined anchor points in the target zone of living in that will search, same anchor point also can be installed the radio frequency card reading antennas of a plurality of different directions.Antenna switcher is switched successively to a plurality of radio frequency card reading antennas, a radio-frequency card reader therefore can be by being placed in the radio frequency card reading antennas of different azimuth, read the radio frequency marking card that is in different azimuth, and determine its target that has radio frequency marking card of reading (can be article, personnel or animal etc.) orientation of living in according to the orientation that each radio frequency card reading antennas is settled, realize that target searches automatically and locate.
Being connected between radio frequency card reading antennas and antenna switcher adopted the lead that can transmit high-frequency signal and tool antijamming capability, for example radio frequency coaxial-cable or twisted-pair feeder.If target zone of living in is big especially, oversize for fear of the line between antenna switcher and antenna, can arrange the above-mentioned device of many covers at the scene, promptly a plurality of antenna switcher and radio-frequency card reader.
Single-chip microcomputer in the antenna switcher can be an independently single-chip microcomputer, also can with the shared single-chip microcomputer of radio-frequency card reader.Antenna switcher can be an independent devices, also can be designed to one with radio frequency reader.
The beneficial effects of the utility model are, the target and the radio-frequency card reader of band radio frequency marking card all no longer need to move, and can realize that large-scale article search automatically and locate, and the quantity of radio-frequency card reader greatly reduces simultaneously, avoided the phase mutual interference between radiofrequency signal, and system configuration is simple.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the system principle schematic diagram of the utility model specific embodiment.
Fig. 2 is the concrete antenna switcher circuit theory schematic diagram of implementing of the utility model.
Figure acceptance of the bid is kept the score and is not: 1, radio frequency card reading antennas, 2, radio frequency coaxial-cable, 3, antenna switcher, 4, USB cable, 5, coaxial cable, 6, computer, 7, RS232 cable, 8, radio-frequency card reader, 9, radio frequency marking card, 10, high frequency relay, 11, power amplifier, 12, decoding circuit, 13, single-chip microcomputer, 14, interface circuit.
Embodiment
Present embodiment is to be that example describes with a warehouse.In the utility model embodiment, radio frequency coaxial-cable 2 is selected HJYV-75-2-3.2 for use, coaxial cable 5 is selected 50 ohm coaxial cable 5D-FB for use, single-chip microcomputer 13 is selected C8051F320 for use, radio-frequency card reader 8 is selected SLRM900 for use, integrated circuit (IC) chip on the radio frequency marking card 9 is selected the SL2 ICS20 of ICODE SLI for use, and high frequency relay 10 is selected G6Y-1-5VDC for use.
In radio frequency reading target automatic station-keeping system principle schematic shown in Figure 1, card reading antennas 1 is placed in respectively in each goods yards of warehouse shelf (equally also can be to be placed on file cabinet or the bookshelf with certain being spaced); Radio frequency marking card 9 is installed in (equally also being can be installed on file or the books) on all containers or the pallet, in radio frequency marking card 9, write in advance the information of corresponding target; All card reading antennas 1 are connected to antenna switcher 3 by radio frequency coaxial-cable 2.Computer 6 sends to antenna switcher 3 with the antenna switching command by USB cable 4, and antenna switcher 3 is connected the radio frequency coaxial-cable 2 of appointment with coaxial cable 5, thereby the card reading antennas 1 of appointment is connected to radio-frequency card reader 8; Computer 6 sends the Card Reader instruction by RS232 cable 7 to radio-frequency card reader 8, radio-frequency card reader 8 reads the interior radio frequency marking card 9 in zone that it covers by the card reading antennas 1 of appointment, read the result and send to computer 6 by RS232 serial cable 7, if read valid data, then can locate these radio frequency marking card 9 corresponding article in the zone that specified card reading antennas 1 covers.Read all card reading antennas 1 according to this in order to upper type, thus can be with all target localizations, and correspondingly can realize searching to specific objective.
In Fig. 2 antenna switcher circuit theory schematic diagram, computer is passed to single-chip microcomputer 13 with the antenna switching command by USB cable 4 and interface circuit 14, the switching gating signal that single-chip microcomputer 13 control decoding circuits 12 produce given antenna, high frequency relay 10 by power amplifier 11 conducting correspondences, so just connected radio frequency coaxial-cable 2 and coaxial cable 5, thereby the card reading antennas 1 of appointment has been connected to radio-frequency card reader 8.Decoding circuit 12 adopts general decoding circuit, and the I/O limited by single-chip microcomputer realizes the multi channel selecting signal, as producing 16 tunnel gating signals with 4 single-chip processor i/o mouths; If but the card reading antennas sum that antenna switcher 3 will be switched is less, for example is less than 24 the tunnel, then can directly utilizes the I/O mouth that is used as address bus and data/address bus on the single-chip microcomputer 13 to come gated on power amplifier 11, and not need decoding circuit.
Claims (4)
1, a kind of antenna suitching type radio frequency reading target automatic positioning equipment comprises radio-frequency card reader (8) and the radio frequency card reading antennas (1) be made up of single-chip data treatment circuit, radio-frequency transmissions circuit, radio-frequency (RF) receiving circuit; It is characterized in that: a plurality of radio frequency card reading antennas (1) are connected with radio-frequency card reader (8) by antenna switcher (4); This antenna switcher is by a Computer Communications Interface, an antennal interface that is connected with radio-frequency card reader, a plurality of interfaces that are connected with the radio frequency card reading antennas and be made up of monolithic processor controlled antenna switcher (3).
2. antenna suitching type radio frequency reading target automatic positioning equipment according to claim 1, it is characterized in that: described antenna switcher (3) mainly comprises decoding circuit (12) and high frequency relay (10); Each radio frequency card reading antennas (1) all is connected on the lead (5) that links to each other with radio-frequency card reader (8) by a high frequency relay (10); Each output of decoding circuit (12) is controlled the break-make of one of them high frequency relay (10) by a power amplifier (11); Antenna switcher is switched the radio frequency card reading antennas according to the switching command that receives, and the radio frequency card reading antennas of appointment is connected to radio-frequency card reader.
3. antenna suitching type radio frequency reading target automatic positioning equipment according to claim 1 and 2 is characterized in that: being connected between radio frequency card reading antennas and antenna switcher adopted the lead (5) that can transmit high-frequency signal and tool antijamming capability.
4. antenna suitching type radio frequency reading target automatic positioning equipment according to claim 3, it is characterized in that: described lead (5) is a kind of radio frequency coaxial-cable or twisted-pair feeder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420003211 CN2702535Y (en) | 2004-02-12 | 2004-02-12 | Antenna switching type radio-frequency scan object automatic positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420003211 CN2702535Y (en) | 2004-02-12 | 2004-02-12 | Antenna switching type radio-frequency scan object automatic positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2702535Y true CN2702535Y (en) | 2005-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420003211 Expired - Fee Related CN2702535Y (en) | 2004-02-12 | 2004-02-12 | Antenna switching type radio-frequency scan object automatic positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2702535Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100461201C (en) * | 2006-12-01 | 2009-02-11 | 华南理工大学 | Intelligent RFID reading system anticonflict scheduling method |
| WO2010072097A1 (en) * | 2008-12-24 | 2010-07-01 | 国民技术股份有限公司 | Rf card reader for mobile communication terminal |
| CN102892140A (en) * | 2012-09-27 | 2013-01-23 | 清华大学 | Time difference measurement-based antenna switching type radio frequency positioning method |
| CN105373752A (en) * | 2015-11-10 | 2016-03-02 | 威海北洋电气集团股份有限公司 | Three-dimensional reading device of radio frequency label |
-
2004
- 2004-02-12 CN CN 200420003211 patent/CN2702535Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100461201C (en) * | 2006-12-01 | 2009-02-11 | 华南理工大学 | Intelligent RFID reading system anticonflict scheduling method |
| WO2010072097A1 (en) * | 2008-12-24 | 2010-07-01 | 国民技术股份有限公司 | Rf card reader for mobile communication terminal |
| CN102892140A (en) * | 2012-09-27 | 2013-01-23 | 清华大学 | Time difference measurement-based antenna switching type radio frequency positioning method |
| CN102892140B (en) * | 2012-09-27 | 2014-12-31 | 清华大学 | Time difference measurement-based antenna switching type radio frequency positioning method |
| CN105373752A (en) * | 2015-11-10 | 2016-03-02 | 威海北洋电气集团股份有限公司 | Three-dimensional reading device of radio frequency label |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Wang Wenbao Document name: Notification of Termination of Patent Right |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |