CN103632177A - Double-line box three-dimensional channel device - Google Patents
Double-line box three-dimensional channel device Download PDFInfo
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- CN103632177A CN103632177A CN201310666071.0A CN201310666071A CN103632177A CN 103632177 A CN103632177 A CN 103632177A CN 201310666071 A CN201310666071 A CN 201310666071A CN 103632177 A CN103632177 A CN 103632177A
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Abstract
The invention relates to the technical field of RFID (radio frequency identification), in particular to a double-line box three-dimensional channel device capable of realizing three-dimensional reading labels and effectively reducing leakage reading rate. The double-line box three-dimensional channel device is provided with a radio frequency reader, a power divider, an antenna switch unit and a radio frequency antenna array connected with the antenna switch unit and composed of more than two antenna coils. A radio frequency signal output end of the radio frequency reader is connected with the power divider, a control signal output end of the radio frequency reader is connected with the power divider and the antenna switch unit respectively, and an output end of the power divider is connected with the antennal switch unit. The double-line box three-dimensional channel device is characterized in that antennas in the radio frequency antenna array are paired in groups, the antenna coils are wound into equal right trapezoids, and two antenna coils are spliced into one rectangular antenna frames in a matched manner. Compared with the prior art, the double-line box three-dimensional channel device is capable of effectively improving accuracy of radio frequency label identification.
Description
Technical field
The present invention relates to radio-frequency (RF) identification (RFID, Radio Frequency Identification) technical field, specifically a kind ofly can realize the two-wire frame three-dimensional channel device that label three-dimensional read, effectively reduced skip rate.
Background technology
In existing REID field, radio-frequency recognition system generally comprises radio-frequency antenna, for controlling the module for reading and writing of emission of radio frequency signals and reception, and be fixed on the radio-frequency (RF) tag on article to be identified, radio-frequency antenna output radiofrequency signal during use, radio-frequency (RF) tag is read, the information of carrying in radio-frequency (RF) tag is the signal receiving circuit in radio-frequency antenna feeds back to module for reading and writing again, after the information receiving is processed, can complete to radio-frequency (RF) tag with and the ID identification of represented object.In this system, radio-frequency antenna is the important component part of whole radio-frequency recognition system, and it completes transmitting and receiving of magnetic field in radio-frequency recognition system.When REID is applied to three-dimensional channel device, radio-frequency antenna need to be made to the form of antenna frame, a plurality of frame antenna form aerial array, and aerial array completes the three-dimensional of label is read.
In existing three-dimensional channel device, single frame antenna coil is when work, in aerial coil centre position, there is blind area, so often by the overlapping complementary type of frame antenna, the poll work successively of each antenna, adjacent two frame antenna can make up the other side blind area mutually, thereby the three-dimensional that has realized label reads.
In prior art, the method that the label three-dimensional that realizes the overlapping complementary type of employing frame antenna reads mainly contains two kinds: a kind of method is that aerial array is when work, two antennas all adopt square coil, two squaerial frames partly overlap, form complementary form, now due to the restriction of antenna frame height, the lane device height of two frame antenna compositions is lower, so the readable region of label is less, in practical application, when label passes through lane device with higher height, may there is skip phenomenon, if want to increase the readable region of label, need to increase the height of antenna frame, now also corresponding increase of the area of blind area, so need to increase the overlapping area of two antenna frames simultaneously, but because two frame antenna of complementation are poll work, idle antenna can play retroaction to the antenna of work, the conference that adds of overlapping area causes the degree intercoupling between antenna to be strengthened, read weak effect, another kind method is the form that aerial array adopts the overlapping complementation of three squaerial frames, the lane device height of three frame antenna compositions is higher, so the readable region of label is larger, but due to three antennae polling work, the antennae polling time is certain, so time decreased that each antenna reads, when a plurality of labels pass through lane device simultaneously, because the time is shorter, may there is skip phenomenon.
Summary of the invention
The present invention is directed to the shortcoming and defect that prior art exists, propose a kind of minimum and do not increase antenna to each other under the prerequisite of overlapping area in antenna number, can greatly increase label readable region, and then effectively make up and read blind area, reduce two-wire frame three-dimensional channel device and the using method of skip rate.
The present invention can reach by following measures:
A kind of two-wire frame three-dimensional channel device, be provided with frequency read/write, power divider, antenna switch unit and the radio-frequency antenna array being formed by plural aerial coil being connected with antenna switch unit, wherein the radiofrequency signal output terminal of frequency read/write is connected with power divider, the control signal output terminal of frequency read/write respectively with power divider, antenna switch unit is connected, the output terminal of power divider is connected with antenna switch unit, it is characterized in that one group between two, antenna in radio-frequency antenna array, the large right-angled trapezium such as the equal coiling of aerial coil is, two aerial coils cooperations are combined into squaerial frame.
In power divider of the present invention, be provided with power distributing circuit and phase-switching circuit, wherein phase-switching circuit is connected with an output terminal of power distributing circuit, power distributing circuit is for being divided at least two-way by the radiofrequency signal of input by distribution ratio, and that phase-switching circuit can adopt is elementary, secondary wire ring type circuit structure completes the switching to the radiofrequency signal phase place of input.
In the present invention, be provided with at least two antenna switch units, in each antenna switch unit, be provided with at least two-way radio-frequency switch circuit, in radio-frequency switch circuit more than two-way and radio-frequency antenna array, plural antenna connects one to one, described radio-frequency switch circuit is comprised of High-frequency signal switching circuit and match circuit, the output terminal of High-frequency signal switching circuit is connected with match circuit, and the output terminal of match circuit is connected with an antenna in radio-frequency antenna array.
In the present invention, be preferably provided with two antenna switch units, in each antenna switch unit, be provided with two-way radio-frequency switch circuit, antenna switch unit is connected with two antennas respectively.
In the present invention, aerial coil coiling is right-angled trapezium, and it has the base angle of two on-right angles, and a wherein less angular range is 30 °-60 °.
The present invention in use, first powers on through system, and frequency read/write completes the loading of master data; After the master data normal load of frequency read/write completes, to antenna switch unit output antenna switch-over control signal, to power divider output radiofrequency signal and Phase-switching signal, wherein two antenna switch units are under the driving of antenna switch-over control signal, control respectively each antenna switch unit Zhong mono-road radio-frequency switch circuit conducting, the antenna that Shi Yugai road radio-frequency switch circuit is corresponding is in running order, antenna matching module is carried out impedance matching to antenna and antenna simultaneously, by the frequency resonance of antenna, to 13.56M, output impedance is converted into 50 Ω; Radiofrequency signal and the Phase-switching signal of frequency read/write output are sent to power divider, power divider is dispensed to two-way by the power averaging of radiofrequency signal, and identical or contrary according to the phase place of this two-way radiofrequency signal of Phase-switching signal controlling, be sent to respectively two antenna switch units, antenna switch unit is sent in running order antenna by radiofrequency signal, and now these two antennas read label simultaneously; After this frequency read/write output antenna switching signal, by controlling the conducting of radio-frequency switch circuit, makes another group antenna in running order, completes label is read, and by repeating above-mentioned steps, completes the detection for the treatment of surveyed area interior label.
The present invention compared with prior art, have the following advantages: the readable region of (1) label increases greatly: by adopting the form of the overlapping complementation of two echelon antenna frames, two hypotenuses that limit is two echelon antenna frames up and down of overlapping region, thereby realize not increasing under the prerequisite of overlapping area, greatly increased the readable region of label.(2) skip rate is low: two frame antenna poll work, because the poll time is certain, so the time that each antenna reads increases, when a plurality of labels pass through lane device simultaneously, antenna has time enough reading tag, thereby effectively reduces skip rate.(3) number of antenna reduces, production cost reduces: adopt the form of the overlapping complementation of two echelon antenna frames that the readable region of label is increased greatly, compare the form that adopts the overlapping complementation of three squaerial frames, reduced the number of antenna, reduced production cost.
accompanying drawing explanation:
Accompanying drawing 1 is structural representation of the present invention.
Accompanying drawing 2 is structural representations of one group of radio-frequency antenna being connected with same antenna switch unit in the present invention.
Reference numeral: power module 1, frequency read/write 2, power divider 3, antenna switch unit 4, antenna switch unit 5, antenna 6, antenna 7, antenna 8, antenna 9.
embodiment:
Below in conjunction with drawings and Examples, the present invention is further illustrated.
embodiment 1:
As shown in Figure 1, a kind of two-wire frame three-dimensional channel device that the present invention proposes, comprise: power module 1, frequency read/write 2, power divider 3, antenna switch unit 4, aerial array, described aerial array adopts the form of two right-angled trapezium antenna frame cooperative compensatings, make minimum in antenna number and do not increase under the prerequisite of paired working day line overlap area, greatly improved the readable region of label, two antennae polling work in array, adjacent two antennas make up the other side blind area mutually, two aerial arrays are worked simultaneously, in the middle of two aerial arrays, form magnetic field passage relatively uniformly, thereby the three-dimensional that can realize label reads, effectively reduce skip rate.
Described frequency read/write 2, input end is connected with power module 1, for generation of radiofrequency signal, Phase-switching signal and antenna switch-over control signal, wherein radiofrequency signal and Phase-switching signal are sent to power divider 3, and antenna switch-over control signal is sent to antenna switch unit 4 and antenna switch unit 5.
Described power divider 3, input end is connected with frequency read/write 1, radiofrequency signal from frequency read/write 1 is pressed to power ratio 1:1 mean allocation to two-way, and identical or contrary according to the phase place of this two-way radiofrequency signal of Phase-switching signal controlling, wherein a road is sent to antenna switch unit 4, and another road is sent to antenna switch unit 5.
Described antenna switch unit 4, input end is connected with power divider 3 with frequency read/write 1 respectively, output terminal is connected with antenna 7 with antenna 6, described antenna switch unit 4 comprises two radio-frequency switch circuits and two antenna matching modules, radio-frequency switch circuit and match circuit connect one to one, and have distinguished switching controls and the coupling of twin aerial 6 and antenna 7.
Described antenna switch unit 5, input end is connected with power divider 3 with frequency read/write 1 respectively, output terminal is connected with antenna 9 with antenna 8, described antenna switch unit 4 comprises two radio-frequency switch circuits and two antenna matching modules, has distinguished switching controls and the coupling of twin aerial 8 and antenna 9.
Described radio-frequency switch circuit, each radio-frequency switch circuit has two-way input ，Yi road input to be connected with power divider 3, for the radiofrequency signal from power divider 3 is sent to respective antenna; Another road input is connected with frequency read/write 1, by the break-make of radio-frequency (RF) switch, complete the switching controls to each self-corresponding antenna, when corresponding antenna work, radiofrequency signal is sent to its corresponding antenna, when corresponding antenna is not worked, the radiofrequency signal antenna corresponding with it does not separated, thereby avoid radiofrequency signal to enter not in running order antenna and affect the antenna of working.
Described matching module, input end is connected with radio-frequency switch circuit, output terminal is connected with corresponding antenna, for corresponding antenna is carried out to impedance matching, by the frequency resonance of respective antenna to 13.56M, output impedance is converted into 50 Ω, thereby guarantees the radiofrequency signal arrival antenna as much as possible that frequency read/write sends, and goes out by aerial radiation.
Described aerial array, two aerial arrays receive respectively the radiofrequency signal from antenna switch unit 4 and antenna switch unit 5, two aerial arrays are worked simultaneously, and two antennae polling work in array form magnetic field passage relatively uniformly in the middle of two aerial arrays.
Described power module 1, for whole lane device provides power supply, its structure is same as the prior art, and this does not repeat.
embodiment 2:
As shown in Figure 2, aerial array in the present invention adopts two-wire box form, enough large in order to guarantee the readable region of label of three-dimensional channel device, the present invention has increased the height of antenna frame, wire frame third side, to meeting, there is an inevitable blind area in the magnetic field forming due to single frame antenna, and the increase along with antenna frame height, the area of blind area also can increase thereupon, so need to increase the overlapping area of two antenna frames simultaneously, if aerial array adopts the form of two overlapping complementations of rectangle frame, the conference that adds of overlapping area causes the degree intercoupling between antenna to be strengthened, read weak effect.In view of above situation, in the present invention, aerial array adopts the form of the overlapping complementation of two echelon antenna frames.
Described echelon antenna frame be shaped as right-angled trapezium, the angle at an on-right angle base angle of described right-angled trapezium can be 30 °-60 °.
Two hypotenuses that limit is two echelon antenna frames up and down of described overlapping region, the area of overlapping region can be equivalent to the area of the rectangular area that the height that marks in Fig. 2 is H, overlapping region is the design of hypotenuse, the area of equivalent overlapping region is increased greatly, when two antennae polling work, can mutually make up blind area completely.
Aerial array adopts the form of the overlapping complementation of two echelon antenna frames, make minimum in antenna number and do not increase under the prerequisite of overlapping area, greatly increased the readable region of label, two antennae polling work in array, adjacent two antennas make up the other side blind area mutually, thereby the three-dimensional that can realize label reads, effectively reduces skip rate.
The present invention compared with prior art, have the following advantages: the readable region of (1) label increases greatly: by adopting the form of the overlapping complementation of two echelon antenna frames, two hypotenuses that limit is two echelon antenna frames up and down of overlapping region, thereby realize not increasing under the prerequisite of overlapping area, greatly increased the readable region of label.(2) skip rate is low: two frame antenna poll work, because the poll time is certain, so the time that each antenna reads increases, when a plurality of labels pass through lane device simultaneously, antenna has time enough reading tag, thereby effectively reduces skip rate.(3) number of antenna reduces, production cost reduces: adopt the form of the overlapping complementation of two echelon antenna frames that the readable region of label is increased greatly, compare the form that adopts the overlapping complementation of three squaerial frames, reduced the number of antenna, reduced production cost.
Claims (5)
1. a two-wire frame three-dimensional channel device, be provided with frequency read/write, power divider, antenna switch unit and the radio-frequency antenna array being formed by plural aerial coil being connected with antenna switch unit, wherein the radiofrequency signal output terminal of frequency read/write is connected with power divider, the control signal output terminal of frequency read/write respectively with power divider, antenna switch unit is connected, the output terminal of power divider is connected with antenna switch unit, it is characterized in that one group between two, antenna in radio-frequency antenna array, the large right-angled trapezium such as the equal coiling of aerial coil is, two aerial coils cooperations are combined into squaerial frame.
2. a kind of pair of frame three-dimensional channel device according to claim 1, is characterized in that aerial coil coiling is right-angled trapezium, and it has the base angle of two on-right angles, and a wherein less angular range is 30 °-60 °.
3. a kind of pair of frame three-dimensional channel device according to claim 2, it is characterized in that being provided with in described power divider power distributing circuit and phase-switching circuit, wherein phase-switching circuit is connected with the output terminal of power distributing circuit, power distributing circuit is for the radiofrequency signal of input is divided into at least two-way by power-division ratios, and phase-switching circuit employing is elementary, secondary wire ring type circuit structure completes the switching to the radiofrequency signal phase place of input.
4. a kind of pair of frame three-dimensional channel device according to claim 3, it is characterized in that being provided with at least two antenna switch units, in each antenna switch unit, be provided with at least two-way radio-frequency switch circuit, in radio-frequency switch circuit more than two-way and radio-frequency antenna array, plural antenna connects one to one, described radio-frequency switch circuit is comprised of High-frequency signal switching circuit and match circuit, the output terminal of High-frequency signal switching circuit is connected with match circuit, and the output terminal of match circuit is connected with an antenna in radio-frequency antenna array.
5. a kind of pair of frame three-dimensional channel device according to claim 4, is characterized in that being provided with two antenna switch units, in each antenna switch unit, is provided with two-way radio-frequency switch circuit, and antenna switch unit is connected with two antennas respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310666071.0A CN103632177A (en) | 2013-12-07 | 2013-12-07 | Double-line box three-dimensional channel device |
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| CN201310666071.0A CN103632177A (en) | 2013-12-07 | 2013-12-07 | Double-line box three-dimensional channel device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485509A (en) * | 2014-12-19 | 2015-04-01 | 周祥 | Space division antenna for RFID system of supermarket and warehousing |
| CN105389605A (en) * | 2015-11-10 | 2016-03-09 | 威海北洋电气集团股份有限公司 | Three-dimensional channel apparatus for special-shaped antenna |
| CN109409484A (en) * | 2018-10-19 | 2019-03-01 | 威海北洋光电信息技术股份公司 | Double-round switchable layer Patcho antenna device based on RFID |
| CN109460688A (en) * | 2018-09-27 | 2019-03-12 | 威海北洋光电信息技术股份公司 | Three-dimensional settlement channel device and its application method based on isosceles triangle antenna |
| CN109950684A (en) * | 2019-04-25 | 2019-06-28 | 北京紫光微电子系统有限公司 | It is a kind of for the aerial array and its application method of contactless smart card to be read in larger range at a distance |
| CN111144150A (en) * | 2019-12-05 | 2020-05-12 | 威海北洋光电信息技术股份公司 | Odd-even synchronization technology-based non-inductive book borrowing and returning channel support, and cascade device and method |
| CN111310486A (en) * | 2018-12-12 | 2020-06-19 | 航天信息股份有限公司 | Vehicle identification method and supervision equipment |
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| CN203588286U (en) * | 2013-12-07 | 2014-05-07 | 威海北洋电气集团股份有限公司 | Double-wire-frame three-dimensional channel device |
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| CN1254202A (en) * | 1998-11-17 | 2000-05-24 | 株式会社村田制作所 | Surface mounted antenna and communication equipment using one |
| CN101408947A (en) * | 2007-10-09 | 2009-04-15 | 西门子公司 | Wireless radio frequency identification reader-writer and method for implementing antenna switch |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485509A (en) * | 2014-12-19 | 2015-04-01 | 周祥 | Space division antenna for RFID system of supermarket and warehousing |
| CN105389605A (en) * | 2015-11-10 | 2016-03-09 | 威海北洋电气集团股份有限公司 | Three-dimensional channel apparatus for special-shaped antenna |
| CN105389605B (en) * | 2015-11-10 | 2018-07-31 | 威海北洋电气集团股份有限公司 | The three-dimensional channel device of special-shaped antenna |
| CN109460688A (en) * | 2018-09-27 | 2019-03-12 | 威海北洋光电信息技术股份公司 | Three-dimensional settlement channel device and its application method based on isosceles triangle antenna |
| CN109460688B (en) * | 2018-09-27 | 2021-11-09 | 威海北洋光电信息技术股份公司 | Three-dimensional settlement channel device based on delta-shaped antenna and using method thereof |
| CN109409484A (en) * | 2018-10-19 | 2019-03-01 | 威海北洋光电信息技术股份公司 | Double-round switchable layer Patcho antenna device based on RFID |
| CN111310486A (en) * | 2018-12-12 | 2020-06-19 | 航天信息股份有限公司 | Vehicle identification method and supervision equipment |
| CN111310486B (en) * | 2018-12-12 | 2023-07-14 | 航天信息股份有限公司 | Vehicle identification method and supervision equipment |
| CN109950684A (en) * | 2019-04-25 | 2019-06-28 | 北京紫光微电子系统有限公司 | It is a kind of for the aerial array and its application method of contactless smart card to be read in larger range at a distance |
| CN111144150A (en) * | 2019-12-05 | 2020-05-12 | 威海北洋光电信息技术股份公司 | Odd-even synchronization technology-based non-inductive book borrowing and returning channel support, and cascade device and method |
| CN111144150B (en) * | 2019-12-05 | 2023-03-28 | 威海北洋光电信息技术股份公司 | Odd-even synchronization technology-based non-inductive book borrowing and returning channel support, and cascade device and method |
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