CN103577857A - RFID three-dimensional detecting device and use method thereof - Google Patents
RFID three-dimensional detecting device and use method thereof Download PDFInfo
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Abstract
The invention relates to the technical field of RFID (Radio Frequency Identification), and in particular to a RFID three-dimensional detecting device which can effectively reduce radio frequency identification omission ratio and relieve interference among a plurality of antennas during working of a multi-antenna identification system, as well as a use method of the RFID three-dimensional detecting device. The RFID three-dimensional detecting device is characterized by further comprising a power distributor circuit, two antenna switching control modes, a first antenna group and a second antenna group, wherein the input end of the power distributor circuit is connected with the output end of a radio frequency signal transmission circuit; the power distributor circuit is used for distributing the input radio frequency signal to two routes to be output according to the ratio of 1:1; the two antenna switching control modes are respectively and correspondingly connected to output ends of the two routes of the power distributor circuit; the first antenna group and the second antenna group are respectively and correspondingly connected with the two antenna switching control modes, and respectively provided with more than two antennas; a micro-control chip is respectively connected with the two switching control modes. Compared to the prior art, the RFID three-dimensional detecting device is reasonable in structure and stable in work, and can effectively reduce radio frequency identification omission ratio and relieve interference among the antennas during the working of the multi-antenna identification system.
Description
Technical field
The present invention relates to RFID REID field, specifically a kind ofly can effectively reduce radio-frequency (RF) identification loss, RFID three-dimensional detection device and the using method thereof of the interference while alleviating many antenna identification systems work between a plurality of antennas.
Background technology
As everyone knows, RFID REID is at document management, the fields such as entrance guard management obtain application more and more widely, existing radio frequency identification equipment generally consists of the following components: be arranged near the radio-frequency reading-writing device in region to be detected, be fixed on the radio-frequency (RF) tag on people/thing to be detected, during use, when people wears radio-frequency (RF) tag or article, be fixed with radio-frequency (RF) tag and enter region to be detected, radio-frequency reading-writing device can read the id information in radio-frequency (RF) tag by sending read signal, matching management software, just can complete the management to processes such as personnel's discrepancy/article arrangements.
When using RFID identification equipment to carry out related management, antenna is indispensable parts, it is for exporting radio frequency read signal and receiving the information of being returned by radio-frequency (RF) tag, antenna adopts coil winding to form, third side, to meeting, there is a blind area in the magnetic field that individual antenna forms, when this causes single antenna work, loss is higher, in order to address this problem, researchist proposes many system for antenna supervising, yet the problem of disturbing mutually between many antennas of how avoiding simultaneously working and the utilization factor that how to improve radiofrequency signal, avoid because of a plurality of antennas problems such as causing checkout equipment power consumption rising of simultaneously working urgently to be resolved hurrily.
Summary of the invention
The present invention is directed to the shortcoming and defect existing in prior art, propose a kind of rational in infrastructure, working stability, can effectively reduce radio-frequency (RF) identification loss, RFID three-dimensional detection device and the using method thereof of the interference while alleviating many antenna identification systems work between a plurality of antennas.
The present invention can reach by following measures:
A kind of RFID three-dimensional detection device, be provided with microcontroller chip, radiofrequency signal transtation mission circuit and radiofrequency signal receiving circuit, microcontroller chip is connected with radiofrequency signal receiving circuit with radiofrequency signal transtation mission circuit respectively, it is characterized in that being also provided with that input end is connected with the output terminal of radiofrequency signal transtation mission circuit for the radiofrequency signal of input is assigned as to the power distributing circuit of two-way output by 1:1, two respectively with the antenna switching controls module of the corresponding connection of two-way output terminal of power distributing circuit, respectively with the first antenna sets and second antenna sets of two corresponding connections of antenna switching controls module, in described the first antenna sets and the second antenna sets, be respectively equipped with plural antenna, microcontroller chip is connected with two switching controls modules respectively.
In the present invention, antenna switching controls module is provided with radio-frequency switch circuit and the match circuit being connected with radio-frequency switch circuit, the quantity of antenna in corresponding the first coupled antenna sets or the second antenna sets in antenna switching controls module wherein, be provided with more than two-way with antenna sets in antenna radio-frequency antenna switch and match circuit one to one, for completing the switching controls to two above antennas.
The present invention is also provided with phase-switching circuit, the control signal input end of phase-switching circuit is connected with microcontroller chip, the input end of phase-switching circuit is connected with power distributing circuit Yi road output terminal, the input end of phase-switching circuit is connected with switching controls module, in phase-switching circuit, be provided with pickup coil, for the phase place of the radiofrequency signal of input being carried out to 180 ° of switchings.
The transtation mission circuit of radiofrequency signal described in the present invention comprises the modulation circuit being connected with microcontroller chip, the power amplification circuit being connected with modulation circuit output terminal, wherein the output terminal of power amplification circuit is connected with power distributing circuit, radiofrequency signal receiving circuit of the present invention comprises the comparison decision circuit being connected with microcontroller chip, the demodulation circuit of intermediate frequency that output terminal is connected with the input end of relatively judgement, the envelope detection circuit that output terminal is connected with the input end of demodulation circuit of intermediate frequency, wherein the match circuit of the input end of envelope detection circuit in antenna switching controls module is connected with antenna.
In preferred each the antenna switching controls module of the present invention, be provided with three road radio-frequency switch circuits and No. three match circuits, in the first antenna sets and the second antenna sets, be respectively equipped with three aerial coils.
Microcontroller chip of the present invention can adopt ARM to realize.
The present invention also proposes a kind of using method of above-mentioned RFID three-dimensional detection device, it is characterized in that comprising the following steps:
Step 1: the first antenna sets and the second antenna group are arranged on respectively to the both sides in region to be detected, make two groups of antennas emitting radio frequency signal in opposite directions, the overlay area overlaid of two groups of antennas, system powers on, and device completes the loading of master data;
Step 2: radiofrequency signal transtation mission circuit is delivered to power distributing circuit by radiofrequency signal, by power distributing circuit, by 1:1 power ratio, input signal is equally divided into the two-way radiofrequency signal that phase place is identical, and two-way radiofrequency signal is delivered to two radio-frequency switch circuit input ends in antenna switching controls module, by microcontroller chip, to antenna switching controls module, export two-way antenna switch-over control signal, two-way antenna switch-over control signal is controlled respectively each antenna switching controls module Zhong mono-road radio-frequency switch circuit conducting, make to have respectively in the first antenna sets and the second antenna sets antenna in running order and to region to be detected emitting radio frequency signal, the radio-frequency (RF) tag that has respectively an antenna to treat in surveyed area in the first antenna sets and the second antenna sets reads,
Step 3: microcontroller chip timesharing sends switch-over control signal to two antenna switching controls modules, change the on off state of radio-frequency switch circuit in antenna handover module, make the plural antennae polling in the first antenna sets and the second antenna sets, guarantee sometime section in, the first antenna sets and the second antenna group only have respectively antenna emitting radio frequency signal in opposite directions, and the surveyed area of two antennas is overlapping.
The present invention is preferably respectively equipped with three radio-frequency antennas in the first antenna sets and the second antenna sets, in respective antenna switching controls module, be provided with the match circuit that three road radio-frequency switch circuits and three tunnels and radio-frequency switch circuit connect one to one, the antenna of the first antenna sets and the second antenna sets corresponding and work in pairs one by one simultaneously, microcontroller chip sends control command to two antenna switching controls modules successively, three pairs of antennas in the first antenna sets and the second antenna sets are switched successively, adjacent antenna makes up mutually work blind area, complete the detection to region to be checked, and due to three antenna time-sharing works in the first antenna sets and the second antenna sets, the problem that can effectively avoid many antennas to disturb mutually.
The present invention can also transmit control signal to phase-switching circuit by microcontroller chip, and the radiofrequency signal phase place of the first antenna sets and the transmitting of the second antenna sets internal antenna is changed, and completes the switching of radio frequency sensing range.
The present invention compared with prior art, has the following advantages:
The three-dimensional omnidirectional that 1, can realize label reads: utilize a plurality of antenna sets to become aerial array, and each antennae polling work, adjacent two antennas make up the other side blind area mutually, thereby realize the three-dimensional omnidirectional of label within the specific limits, read, and effectively reduce loss.
2, the scope of reading tag is large: utilize the aerial array that three antennas form to replace individual antenna, three antennae polling work, each antenna of working obtains whole energy of frequency read/write, thereby the scope of effective magnetic field is increased greatly, and the scope of reading tag increases greatly.
3, the utilization factor of read write line is high: a plurality of antennas use same read write line, and when each antenna work, can obtain whole energy of read write line, greatly improve the utilization factor of read write line, also solved the mutual interference problem existing when a plurality of antennas connect a plurality of read write lines and work simultaneously simultaneously.
accompanying drawing explanation:
Accompanying drawing 1 is structural representation of the present invention.
Accompanying drawing 2 is another kind of structural representations of the present invention.
Reference numeral: microcontroller chip 1, radiofrequency signal transtation mission circuit 2, radiofrequency signal receiving circuit 3, power distributing circuit 4, antenna switching controls module 5, the first antenna sets 6, the second antenna sets 7, antenna 8, radio-frequency switch circuit 9, match circuit 10, phase-switching circuit 11.
embodiment:
Below in conjunction with accompanying drawing, the present invention is further illustrated.
As shown in Figure 1, the present invention proposes a kind of RFID three-dimensional detection device, be provided with microcontroller chip 1, radiofrequency signal transtation mission circuit 2 and radiofrequency signal receiving circuit 3, microcontroller chip 1 is connected with radiofrequency signal receiving circuit 3 with radiofrequency signal transtation mission circuit 2 respectively, it is characterized in that being also provided with that input end is connected with the output terminal of radiofrequency signal transtation mission circuit 2 for the radiofrequency signal of input is assigned as to the power distributing circuit 4 of two-way output by 1:1, two respectively with the antenna switching controls module 5 of the corresponding connection of two-way output terminal of power distributing circuit 4, respectively with the first antenna sets 6 and second antenna sets 7 of two corresponding connections of antenna switching controls module 5, in described the first antenna sets 6 and the second antenna sets 7, be respectively equipped with plural antenna 8, microcontroller chip is connected with two switching controls modules respectively.
In the present invention, antenna switching controls module 5 is provided with radio-frequency switch circuit 9 and the match circuit 10 being connected with radio-frequency switch circuit 9, the quantity of antenna 8 in corresponding the first coupled antenna sets 6 or the second antenna sets 7 in antenna switching controls module 5 wherein, be provided with more than two-way with antenna sets in antenna 8 radio-frequency antenna on-off circuit 9 and match circuit 10 one to one, for completing the switching controls to two above antennas.
The present invention is also provided with phase-switching circuit 11, the control signal input end of phase-switching circuit 11 is connected with microcontroller chip 1, the input end of phase-switching circuit 11 is connected with power distributing circuit 4 Yi road output terminals, the input end of phase-switching circuit 11 is connected with switching controls module 5, in phase-switching circuit 11, be provided with pickup coil, for the phase place of the radiofrequency signal of input being carried out to 180 ° of switchings.
The transtation mission circuit of radiofrequency signal described in the present invention 2 comprises the modulation circuit being connected with microcontroller chip 1, the power amplification circuit being connected with modulation circuit output terminal, wherein the output terminal of power amplification circuit is connected with power distributing circuit, radiofrequency signal receiving circuit 3 of the present invention comprises the comparison decision circuit being connected with microcontroller chip, the demodulation circuit of intermediate frequency that output terminal is connected with the input end of relatively judgement, the envelope detection circuit that output terminal is connected with the input end of demodulation circuit of intermediate frequency, wherein the match circuit 10 of the input end of envelope detection circuit in antenna switching controls module 5 is connected with antenna 8.
In preferred each the antenna switching controls module 5 of the present invention, be provided with three road radio-frequency switch circuits 9 and No. three match circuit 10, the first antenna sets and be provided with three aerial coils with corresponding respectively in the second antenna sets.
Microcontroller chip of the present invention can adopt ARM to realize.
The present invention also proposes a kind of using method of above-mentioned RFID three-dimensional detection device, it is characterized in that comprising the following steps:
Step 1: the first antenna sets and the second antenna group are arranged on respectively to the both sides in region to be detected, make two groups of antennas emitting radio frequency signal in opposite directions, the overlay area overlaid of two groups of antennas, system powers on, and device completes the loading of master data;
Step 2: radiofrequency signal transtation mission circuit is delivered to power distributing circuit by radiofrequency signal, by power distributing circuit, by 1:1 power ratio, input signal is equally divided into the two-way radiofrequency signal that phase place is identical, and two-way radiofrequency signal is delivered to two radio-frequency switch circuit input ends in antenna switching controls module, by microcontroller chip, to antenna switching controls module, export two-way antenna switch-over control signal, two-way antenna switch-over control signal is controlled respectively each antenna switching controls module Zhong mono-road radio-frequency switch circuit conducting, make to have respectively in the first antenna sets and the second antenna sets antenna in running order and to region to be detected emitting radio frequency signal, the radio-frequency (RF) tag that has respectively an antenna to treat in surveyed area in the first antenna sets and the second antenna sets reads,
Step 3: microcontroller chip timesharing sends switch-over control signal to two antenna switching controls modules, change the on off state of radio-frequency switch circuit in antenna handover module, make the plural antennae polling in the first antenna sets and the second antenna sets, guarantee sometime section in, the first antenna sets and the second antenna group only have respectively antenna emitting radio frequency signal in opposite directions, and the surveyed area of two antennas is overlapping.
The present invention is preferably respectively equipped with three radio-frequency antennas in the first antenna sets and the second antenna sets, in respective antenna switching controls module, be provided with the match circuit that three road radio-frequency switch circuits and three tunnels and radio-frequency switch circuit connect one to one, the antenna of the first antenna sets and the second antenna sets corresponding and work in pairs one by one simultaneously, microcontroller chip sends control command to two antenna switching controls modules successively, three pairs of antennas in the first antenna sets and the second antenna sets are switched successively, adjacent antenna makes up mutually work blind area, complete the detection to region to be checked, and due to three antenna time-sharing works in the first antenna sets and the second antenna sets, the problem that can effectively avoid many antennas to disturb mutually.
The present invention can also transmit control signal to phase-switching circuit by microcontroller chip, and the radiofrequency signal phase place of the first antenna sets and the transmitting of the second antenna sets internal antenna is changed, and completes the switching of radio frequency sensing range.
The present invention compared with prior art, has the following advantages:
The three-dimensional omnidirectional that 1, can realize label reads: utilize a plurality of antenna sets to become aerial array, and each antennae polling work, adjacent two antennas make up the other side blind area mutually, thereby realize the three-dimensional omnidirectional of label within the specific limits, read, and effectively reduce loss.
2, the scope of reading tag is large: utilize the aerial array that three antennas form to replace individual antenna, three antennae polling work, each antenna of working obtains whole energy of frequency read/write, thereby the scope of effective magnetic field is increased greatly, and the scope of reading tag increases greatly.
3, the utilization factor of read write line is high: a plurality of antennas use same read write line, and when each antenna work, can obtain whole energy of read write line, greatly improve the utilization factor of read write line, also solved the mutual interference problem existing when a plurality of antennas connect a plurality of read write lines and work simultaneously simultaneously.
Claims (7)
1. a RFID three-dimensional detection device, be provided with microcontroller chip, radiofrequency signal transtation mission circuit and radiofrequency signal receiving circuit, microcontroller chip is connected with radiofrequency signal receiving circuit with radiofrequency signal transtation mission circuit respectively, it is characterized in that being also provided with that input end is connected with the output terminal of radiofrequency signal transtation mission circuit for the radiofrequency signal of input is assigned as to the power distributing circuit of two-way output by 1:1, two respectively with the antenna switching controls module of the corresponding connection of two-way output terminal of power distributing circuit, respectively with the first antenna sets and second antenna sets of two corresponding connections of antenna switching controls module, in described the first antenna sets and the second antenna sets, be respectively equipped with plural antenna, microcontroller chip is connected with two switching controls modules respectively.
2. RFID three-dimensional detection device according to claim 1, it is characterized in that antenna switching controls module is provided with radio-frequency switch circuit and the match circuit being connected with radio-frequency switch circuit, the quantity of antenna in corresponding the first coupled antenna sets or the second antenna sets in antenna switching controls module wherein, be provided with more than two-way with antenna sets in antenna radio-frequency antenna switch and match circuit one to one.
3. RFID three-dimensional detection device according to claim 1, it is characterized in that being provided with phase-switching circuit, the control signal input end of phase-switching circuit is connected with microcontroller chip, the input end of phase-switching circuit is connected with power distributing circuit Yi road output terminal, the input end of phase-switching circuit is connected with switching controls module, is provided with for the phase place of the radiofrequency signal of input being carried out to the pickup coil of 180 ° of switchings in phase-switching circuit.
4. RFID three-dimensional detection device according to claim 1, it is characterized in that described radiofrequency signal transtation mission circuit comprises the modulation circuit being connected with microcontroller chip, the power amplification circuit being connected with modulation circuit output terminal, wherein the output terminal of power amplification circuit is connected with power distributing circuit, described radiofrequency signal receiving circuit comprises the comparison decision circuit being connected with microcontroller chip, the demodulation circuit of intermediate frequency that output terminal is connected with the input end of relatively judgement, the envelope detection circuit that output terminal is connected with the input end of demodulation circuit of intermediate frequency, wherein the match circuit of the input end of envelope detection circuit in antenna switching controls module is connected with antenna.
5. RFID three-dimensional detection device according to claim 1, is characterized in that being provided with in each antenna switching controls module three road radio-frequency switch circuits and No. three match circuits, and the first antenna sets is provided with three aerial coils with corresponding respectively in the second antenna sets.
6. a using method for the RFID three-dimensional detection device as described in any one in claim 1-5, is characterized in that comprising the following steps:
Step 1: the first antenna sets and the second antenna group are arranged on respectively to the both sides in region to be detected, make two groups of antennas emitting radio frequency signal in opposite directions, the overlay area overlaid of two groups of antennas, system powers on, and device completes the loading of master data;
Step 2: radiofrequency signal transtation mission circuit is delivered to power distributing circuit by radiofrequency signal, by power distributing circuit, by 1:1 power ratio, input signal is equally divided into the two-way radiofrequency signal that phase place is identical, and two-way radiofrequency signal is delivered to two radio-frequency switch circuit input ends in antenna switching controls module, by microcontroller chip, to antenna switching controls module, export two-way antenna switch-over control signal, two-way antenna switch-over control signal is controlled respectively each antenna switching controls module Zhong mono-road radio-frequency switch circuit conducting, make to have respectively in the first antenna sets and the second antenna sets antenna in running order and to region to be detected emitting radio frequency signal, the radio-frequency (RF) tag that has respectively an antenna to treat in surveyed area in the first antenna sets and the second antenna sets reads,
Step 3: microcontroller chip timesharing sends switch-over control signal to two antenna switching controls modules, change the on off state of radio-frequency switch circuit in antenna handover module, make the plural antennae polling in the first antenna sets and the second antenna sets, guarantee sometime section in, the first antenna sets and the second antenna group only have respectively antenna emitting radio frequency signal in opposite directions, and the surveyed area of two antennas is overlapping.
7. the using method of a kind of RFID three-dimensional detection device according to claim 6, characterized by further comprising by microcontroller chip and transmit control signal to phase-switching circuit, the radiofrequency signal phase place of the first antenna sets and the transmitting of the second antenna sets internal antenna is changed, complete the switching of radio frequency sensing range.
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| CN103908078A (en) * | 2014-03-28 | 2014-07-09 | 北京市第一中级人民法院 | RFID (radio frequency identification device)-based archive storage system |
| CN103927567A (en) * | 2014-04-17 | 2014-07-16 | 德讯科技股份有限公司 | System for realizing low-frequency multi-RFID label positioning |
| CN104966113A (en) * | 2015-07-27 | 2015-10-07 | 威海北洋电气集团股份有限公司 | RFID reading-writing system and coding and conflict processing method for label return signal thereof |
| 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 |
| CN105718829A (en) * | 2016-01-27 | 2016-06-29 | 北京邮电大学 | RFID based label behavior direction determining method |
| CN106539569A (en) * | 2015-12-10 | 2017-03-29 | 悦享趋势科技（北京）有限责任公司 | Wearable physiological monitoring equipment and its antenna system |
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| CN107392076A (en) * | 2017-09-07 | 2017-11-24 | 广州佳都数据服务有限公司 | A kind of multiple antennas control circuit and multiple antennas read write line |
| CN108595995A (en) * | 2018-05-02 | 2018-09-28 | 北京紫光微电子系统有限公司 | A kind of detection antenna system and detection method for intermediate frequency radio-frequency identification card |
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| CN202939627U (en) * | 2012-10-30 | 2013-05-15 | 上海阿法迪智能标签系统技术有限公司 | High frequency RFID reader-writer expansion adapter |
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2013
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| CN103908078B (en) * | 2014-03-28 | 2016-10-26 | 北京市第一中级人民法院 | Profile storage system based on RFID |
| CN103908078A (en) * | 2014-03-28 | 2014-07-09 | 北京市第一中级人民法院 | RFID (radio frequency identification device)-based archive storage system |
| CN103927567A (en) * | 2014-04-17 | 2014-07-16 | 德讯科技股份有限公司 | System for realizing low-frequency multi-RFID label positioning |
| CN104966113A (en) * | 2015-07-27 | 2015-10-07 | 威海北洋电气集团股份有限公司 | RFID reading-writing system and coding and conflict processing method for label return signal thereof |
| CN104966113B (en) * | 2015-07-27 | 2018-12-25 | 威海北洋电气集团股份有限公司 | The decoding of RFID read-write system and its label return signal and conflict processing method |
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| CN105718829A (en) * | 2016-01-27 | 2016-06-29 | 北京邮电大学 | RFID based label behavior direction determining method |
| CN106778420B (en) * | 2016-12-22 | 2020-11-03 | 江苏本能科技有限公司 | Multi-channel radio frequency identification device linkage method and system |
| CN106778420A (en) * | 2016-12-22 | 2017-05-31 | 江苏本能科技有限公司 | Multi-channel rf identifying device interlock method and system |
| CN107392076A (en) * | 2017-09-07 | 2017-11-24 | 广州佳都数据服务有限公司 | A kind of multiple antennas control circuit and multiple antennas read write line |
| CN107392076B (en) * | 2017-09-07 | 2023-11-10 | 广州佳都数据服务有限公司 | Multi-antenna control circuit and multi-antenna reader-writer |
| CN108595995A (en) * | 2018-05-02 | 2018-09-28 | 北京紫光微电子系统有限公司 | A kind of detection antenna system and detection method for intermediate frequency radio-frequency identification card |
| 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 |
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| CN109670361A (en) * | 2019-01-29 | 2019-04-23 | 杭州檀木科技有限公司 | A kind of synchronous automatic shifting phase Wireless exciters device and synchronous automatic shifting phase method |
| CN110245735A (en) * | 2019-07-05 | 2019-09-17 | 深圳市章誉物联技术有限公司 | A kind of demixing scan sense channel RFID controller |
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