CN103646263B - Rfid cascade channel device - Google Patents
Rfid cascade channel device Download PDFInfo
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- CN103646263B CN103646263B CN201310729666.6A CN201310729666A CN103646263B CN 103646263 B CN103646263 B CN 103646263B CN 201310729666 A CN201310729666 A CN 201310729666A CN 103646263 B CN103646263 B CN 103646263B
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Abstract
The present invention relates to technical field of RFID，Specifically a kind of RFID cascade channel device，It is characterized in that being provided with plural channel unit，It is provided with least one main channel support with least one from channel bracket in each channel unit，Main channel support with radio-frequency antenna group is respectively equipped with from channel bracket，Main channel support is additionally provided with radio frequency read-write cell、Control unit and power circuit，Control unit is connected with radio frequency read-write cell，The outfan of wherein radio frequency read-write cell is connected with the radio-frequency antenna group in master/slave channel bracket respectively，It is provided with microcontroller chip in control unit、Memorizer、Antenna switching circuit，Channel switching circuit，And telecommunication circuit，Wherein microcontroller chip respectively with memorizer、Antenna control switching circuit、Channel switching circuit、Telecommunication circuit is connected，The present invention is compared with prior art，Have rational in infrastructure、Low cost、Read the significant advantage such as accurate.
Description
Technical field
The present invention relates to technical field of RFID, specifically a kind of can be before reducing system composition complexity
Put, effectively improve detection success rate, reduce loss, easy to operate RFID cascade channel device.
Background technology
It is known that RFID lane device is generally used for the antitheft field of book and file etc., there is ratio for reading success rate
Higher requirement, general RFID lane device is made up of two channel bracket being oppositely arranged, and each channel bracket is provided with
RFID reads equipment.RFID reads equipment and includes frequency read/write and radio-frequency antenna, wherein frequency read/write and radio-frequency antenna
It is connected, in frequency read/write, is provided with radio frequency read/write circuit, launch/receive electromagnetic wave by radio-frequency antenna and complete to treat detection zone
The identification of RFID label tag in domain.
Existing RFID passage especially 13.56M radio-frequency channel, is often equipped with frequency read/write in each channel, and
It is simultaneously provided with the radio-frequency antenna being connected with frequency read/write, this leads to lane device operationally, for avoiding two passages to prop up
Radio frequency read/write circuit on frame works interfering with each other of causing simultaneously, will take monolithic poll working method, and that is, each moment is only
Have a channel bracket in work, this very big reduction necessarily causing the overall detection efficiency of passage it is likely that exist special
Time period reads blind spot, causes detection leakage phenomenon, and if all passages all work together, because channel pitch is closer, Duo Getong
Each other can there is interference when road support works simultaneously, cause Detection results to decline；In addition, in each channel bracket
It is equipped with a frequency read/write, makes the holistic cost of passage higher, and work as Air conduct measurement equipment needs and higher level's industrial computer etc.
Equipment is communicated, and needs to add communication interface to each channel bracket, so that the frequency read/write in multiple channel bracket
It is connected with upper management equipment respectively, this makes when the channel bracket of cascade is more, and complex operation and construction are complicated.
Content of the invention
The present invention be directed to prior art present in shortcoming and defect, propose one kind can effectively improve detection success rate,
Reduce loss, and optimize system composition complexity, reduce the RFID cascade channel of operation construction labor intensity and production cost
Device.
The present invention can be reached by following measures：
A kind of RFID cascade channel device it is characterised in that being provided with plural channel unit, in each channel unit
Be provided with least one main channel support and at least one next-door neighbour main channel support and with main channel support be placed in parallel from passage
Support, described main channel support with radio-frequency antenna group is respectively equipped with from channel bracket, main channel support be additionally provided with radio frequency read-write
Unit, control unit and power circuit, control unit is connected with radio frequency read-write cell, wherein the output of radio frequency read-write cell
End is connected with the radio-frequency antenna group in master/slave channel bracket respectively, is provided with microcontroller chip, memorizer, is used in control unit
Control the antenna switching circuit of two or more radio-frequency antenna switch operating in radio-frequency antenna group in master/slave channel bracket, for controlling
Make the channel switching circuit of multiple master/slave channel bracket working conditions, and the telecommunication circuit for communicating with host computer realization,
Wherein microcontroller chip is connected with memorizer, antenna control switching circuit, channel switching circuit, telecommunication circuit respectively.
It is provided with radiofrequency signal transtation mission circuit and rf signal reception circuit in heretofore described radio frequency read-write cell, its
Middle rf signal reception circuit by envelope detection circuit, demodulation circuit of intermediate frequency, compare decision circuit and form；
Radiofrequency signal transtation mission circuit includes the modulation electricity being connected for the crystal oscillator producing high-frequency signal with crystal oscillator outfan
The match circuit that the power amplification circuit that road is connected with modulation circuit outfan is connected with radio-frequency antenna；
Wherein power amplification circuit is connected with the input of power distributing circuit, and power distributing circuit is used for input
Radiofrequency signal is divided into multiple-channel output by power-division ratios, and in the present invention, the radiofrequency signal of preferred pair input presses 1:1 is divided into two-way defeated
The 1*2 power distributing circuit going out, the two-way output of power distributing circuit is connected with channel switching circuit respectively, passage switching electricity
Road includes three road RF signal switch circuit, the control signal input of channel switching circuit and microcontroller chip phase in control unit
Connect, three road RF signal output of channel switching circuit are connected with No. three antenna control switching circuits respectively, every road sky
Line control switching circuit all includes two groups of RF signal switch circuit, the control signal end of every road antenna switching circuit all with control
Microcontroller chip in unit is connected, and the outfan of three road antenna switching circuits is connected with three road matching modules respectively, three tunnels
The outfan of matching module respectively with the radio-frequency antenna group of main channel support, left side from the radio-frequency antenna group of channel bracket, right side
It is connected from the radio-frequency antenna group of channel bracket, wherein in each matching module, be provided with radio-frequency antenna quantity phase in radio-frequency antenna group
Same match circuit.
It is provided with plural radio-frequency antenna, in the present invention in radio-frequency antenna group in master/slave channel bracket in the present invention
It is preferably the radio-frequency antenna of about two equal-specifications placed, the two radio-frequency antenna coil shapes and number of turn is identical and part each other
Overlap, preferably around being made as rectangle frame, lap is about the 1/5-1/2 of aerial coil area to two radio-frequency antenna coil, excellent
Elect 1/4 or 1/3 as, with effective accuracy reducing check frequency, improving to RFID label tag identification.
Be additionally provided with for detecting whether the infrared detection circuit that passes through of someone in the present invention, one end of infrared detection circuit with
Microcontroller chip in control unit is connected, and the other end is connected with infrared sensor, preferably by sending out in infrared sensor
Whether emitter, receptor are relatively fixed in adjacent pair main channel support, from channel bracket, have personnel to pass through for collection
Information, and this information feeding microcontroller chip is processed.
The finger indicating this channel bracket working condition can also be respectively provided with the present invention on master/slave channel bracket
Show lamp, in control unit, be provided with the indicating lamp control circuit being connected with microcontroller chip, indicating lamp control circuit is logical with main respectively
Road support, the display lamp from channel bracket are connected.
The telecommunication circuit being provided with the control unit of main channel support in the present invention can be used for current main channel support
It is connected with outside host computer, set information is assigned by host computer, current main channel support is set to main frame, as a certain master
When channel bracket is set to main frame, the control unit of this main channel support can read remaining coupled main channel and prop up
The reading information of frame.
In the present invention, the both sides of main channel support can be respectively equipped with one from channel bracket, or only in main channel support
Side be provided with one from channel bracket, form a channel unit, can be provided with the present invention plural as mentioned above
Channel unit, plural channel unit presses and extends from, master and slave, master and slave form, main channel support foremost
Control unit is connected from channel bracket with both sides through control line respectively, and the control unit phase with next main channel support
Connect.
Be preferably provided with two main channel supports in each channel unit in the present invention and three prop up with two main channels respectively
Frame spaced from channel bracket, form 4 channel units, during use, external communication electricity is converted to unidirectional current simultaneously by power circuit
Power for whole device, in plural channel unit, the telecommunication circuit of each main channel support control unit is connected, if
The control unit of fixed wherein any one main channel support passes through the control unit to remaining main channel support for the channel switching circuit
Send synchronous control signal, after the control unit of remaining main channel support receives this synchronous control signal, open radio frequency read-write single
Unit, outwards exports radiofrequency signal, and now plural main channel support, under the control of synchronous control signal, props up to main channel
Frame and be located at each main channel support on the right side of（Or left side）From channel bracket radio-frequency antenna output radiofrequency signal, formed
Two or more sense channel, then plural main channel support under control of the synchronization signal, to main channel support and
On the left of each main channel support（Right side）From channel bracket radio-frequency antenna output radiofrequency signal, complete to opposite side lead to
The detection of radio-frequency (RF) tag in road, persistently repeats aforesaid operations, you can complete the continuous reading to RFID label tag, in the process of detection
In, infrared detection circuit persistently detects in each passage, whether someone passes through, and detection information is stored in current channel unit
Memorizer in the support of main channel, when upper management unit（Host computer）When reading/detection data checked by needs, by two or more
The telecommunication circuit of main channel support be connected with host computer, or by by the telecommunication circuit series connection of main channel support so that logical
Cross the detection information that the telecommunication circuit of any one main channel support can read in memorizer, plural main channel support
Any one in the support of plural main channel can be made as main frame by different weights are set by host computer, real
The now reading of the control to remaining main channel support working condition and institute's detection information.
When the present invention uses, first pass through power circuit and power for whole device, electricity in whole system, hardware components are carried out just
Beginningization；By in the control unit setting plural main channel support of host computer or main channel support, any one is used as master
Machine, the main channel support as main frame sends left channel switching command to remaining main channel support（It is intended to open positioned at each
On the left of the support of main channel from channel bracket）, each main channel support by channel switching circuit open on the left of it from passage
Support, makes the radiofrequency signal that on each main channel support, radio frequency read-write cell sends in the presence of power distributing circuit, is divided into
Two-way, and be sent to respectively left side from the radio-frequency antenna group channel bracket and the radio-frequency antenna group on the support of main channel, often
Control unit in the support of individual main channel controls main channel support to take turns from two groups of radio-frequency antenna group switchings of channel bracket with left side
Ask, specially upper piece radio-frequency antenna from channel bracket and main channel support for the Schilling works, and bottom sheet radio-frequency antenna is in non-
Working condition, after detecting the region to be checked between master/slave channel bracket, the antenna switching circuit in the support of main channel is in micro-control core
Under the control of piece, make two bottom sheet radio-frequency antennas work of master/slave channel bracket, in order to avoid missing inspection, can multiple poll；This
Afterwards, the main channel support as main frame sends right channel switching command to remaining main channel support again（It is intended to open and be located at often
On the right side of the support of individual main channel from channel bracket）, its operation principle ibid, so switch operating repeatedly, synchronization has half
Passage improves whole work efficiency and the detection success rate of passage in work, another hemichannel of subsequent time in work；
If the labeling requirement detecting is reported to the police, main channel support controls the display lamp flicker being located during its detection, to show
Report to the police；If the main channel support as main frame receives querying command, remaining main channel support can be inquired about by control unit
Label detection information and infrared counting information, then through telecommunication circuit by the information reporting of whole group Air conduct measurement to host computer.
The present invention compared with prior art, optimizes the structure of device, reduces production cost, and is led to by multiple antennas more
Road switching, poll, effectively reduce loss, have rational in infrastructure, low cost, read accurately etc. significantly advantage.
Brief description：
Accompanying drawing 1 is the structural representation of the present invention.
Accompanying drawing 2 is the circuit structure block diagram of the present invention.
Accompanying drawing 3 is a kind of structural representation of radio-frequency antenna group in the present invention.
Accompanying drawing 4 is another kind of structural representation of radio-frequency antenna group in the present invention.
Reference：Channel unit 1, main channel support 2, from channel bracket 3, host computer 4, radio-frequency antenna group 5, micro-control core
Piece 6, memorizer 7, antenna switching circuit 8, channel switching circuit 9, telecommunication circuit 10, matching module 11, power amplification circuit 12,
Power distributing circuit 13, crystal oscillator 14, modulation circuit 15, radio-frequency antenna 16.
Specific embodiment：
Below in conjunction with the accompanying drawings and embodiment the present invention is further illustrated.
Embodiment 1：
The present invention proposes a kind of RFID cascade channel device, is provided with plural channel unit 1, each channel unit
It is provided with least one main channel support 2 and at least one next-door neighbour main channel support 2 in 1 and be placed in parallel with main channel support 2
From channel bracket 3, wherein channel unit 1 includes following three kinds of structures：It is provided with main channel support 2 and be located at main channel support
2 left side from channel bracket 3；Or it is provided with main channel support 2 and positioned at main channel support 2 both sides from channel bracket 3；Or set
There is main channel support 2 and positioned at main channel support 2 right side from channel bracket 3；
As shown in Figure 1, the present invention can adopt the channel unit of two or more same form to cascade successively（It is each master
Channel bracket 2 is connected from channel bracket 3 with adjacent respectively）, form RFID cascade channel device, or adopt multi-form
Channel unit Mixed cascading, form RFID cascade channel device, in order to improve the management to passages multiple in cascade unit, also
It is provided with host computer 4, host computer 4 is connected with two or more channel unit 1 respectively；
As shown in Figure 2, main channel of the present invention support 2 be respectively equipped with radio-frequency antenna group 5 from channel bracket 3,
In the present embodiment, each radio-frequency antenna group 5 is provided with two radio-frequency antennas, and main channel support 2 is additionally provided with radio frequency read-write cell, control
Unit and power circuit, are provided with microcontroller chip 6, memorizer 7, are used for controlling radio frequency in master/slave channel bracket in control unit
The antenna switching circuit 8 of two or more radio-frequency antenna switch operating in antenna sets, for controlling multiple master/slave channel bracket work
The channel switching circuit 9 of state, and for realizing, with host computer 4, the telecommunication circuit 10 that communicates, wherein microcontroller chip 6 respectively with
Memorizer 7, antenna control switching circuit 8, channel switching circuit 9, telecommunication circuit 10 are connected.
It is provided with radiofrequency signal transtation mission circuit and rf signal reception circuit in heretofore described radio frequency read-write cell, its
Middle rf signal reception circuit by envelope detection circuit, demodulation circuit of intermediate frequency, compare decision circuit and form；Radiofrequency signal sends electricity
Road includes modulation circuit 15 and the modulation circuit 15 being connected for the crystal oscillator 14 producing high-frequency signal with crystal oscillator 14 outfan
The match circuit that the power amplification circuit 12 that outfan is connected is connected with radio-frequency antenna；
Wherein power amplification circuit 12 is connected with the input of power distributing circuit 13, and power distributing circuit 13 is used for will
The radiofrequency signal of input is divided into multiple-channel output by power-division ratios, presses 1 using to the radiofrequency signal inputting in the present embodiment:1 point
The 1*2 power distributing circuit 13 exporting for two-way, the two-way output of power distributing circuit 13 is connected with channel switching circuit 9 respectively
Connect, channel switching circuit 9 includes three road RF signal switch circuit, the control signal input of channel switching circuit 9 and control
In unit, microcontroller chip 6 is connected, three road RF signal output of channel switching circuit 9 respectively with No. three antenna switching controls
Circuit 8 is connected, and every road antenna control switching circuit 8 all includes two groups of RF signal switch circuit, every road antenna switching circuit 8
Control signal end be all connected with the microcontroller chip 6 in control unit, the outfan of three road antenna switching circuits 8 is respectively with three
Road matching module 11 is connected, the outfan of three road matching modules 11 respectively with the radio-frequency antenna group 5 of main channel support, left side from
The radio-frequency antenna group 5 of channel bracket, right side are connected from the radio-frequency antenna group 5 of channel bracket, wherein in each matching module 11
It is provided with radio-frequency antenna quantity identical match circuit in radio-frequency antenna group 5.
As shown in Figure 3, it is provided with about two in the radio-frequency antenna group 5 in master/slave channel bracket in the present invention to place
The radio-frequency antenna 16 of equal-specification, two radio-frequency antenna 16 coil shapes and the number of turn are identical and are partially overlapped by each other, two radio frequency skies
Preferably around being made as rectangle frame, lap 17 is about the 1/5-1/2, preferably 1/4 or 1/ of aerial coil area to line 16 coil
3, with effective accuracy reducing check frequency, improving to RFID label tag identification.
Be additionally provided with for detecting whether the infrared detection circuit that passes through of someone in the present invention, one end of infrared detection circuit with
Microcontroller chip 6 in control unit is connected, and the other end is connected with infrared sensor, preferably by sending out in infrared sensor
Whether emitter, receptor are relatively fixed in adjacent pair main channel support 2, from channel bracket 3, have personnel to lead to for collection
Cross information, and this information is sent into microcontroller chip 6 and processed.
The finger indicating this channel bracket working condition can also be respectively provided with the present invention on master/slave channel bracket
Show lamp, in control unit, be provided with the indicating lamp control circuit being connected with microcontroller chip, indicating lamp control circuit is logical with main respectively
Road support, the display lamp from channel bracket are connected, and when the radio-frequency antenna group in this channel bracket is in running order, refer to
Show that lamp is bright.
The telecommunication circuit being provided with the control unit of main channel support 2 in the present invention can be used for current main channel support
2 are connected with outside host computer 4, assign set information by host computer 4, current main channel support 4 are set to main frame, when certain
When one main channel support is set to main frame, the control unit of this main channel support 2 can read remaining coupled master
The reading information of channel bracket 2.
Embodiment 2：
A kind of RFID cascade channel device, is provided with plural channel unit 1, is provided with least in each channel unit 1
One main channel support 2 and at least one next-door neighbour main channel support 2 and with main channel support 2 be placed in parallel from channel bracket 3,
Wherein said main channel support 2 with radio-frequency antenna group 5 is respectively equipped with from channel bracket 3, main channel support 2 is additionally provided with radio frequency and reads
R/w cell, control unit and power circuit, control unit is connected with radio frequency read-write cell, and wherein radio frequency read-write cell is defeated
Go out end be connected with the radio-frequency antenna group in master/slave channel bracket respectively, be provided with control unit microcontroller chip 6, memorizer 7,
For controlling the antenna switching circuit 8 of two or more radio-frequency antenna 16 switch operating in radio-frequency antenna group in master/slave channel bracket,
For controlling the channel switching circuit 9 of multiple master/slave channel bracket working conditions, and for logical with what host computer realization communicated
Letter circuit 10, wherein microcontroller chip 6 respectively with memorizer 7, antenna control switching circuit 8, channel switching circuit 9, telecommunication circuit
10 are connected；
As shown in Figure 1, the present invention can adopt the channel unit of two or more same form to cascade successively（It is each master
Channel bracket 2 is connected from channel bracket 3 with adjacent respectively）, form RFID cascade channel device, or adopt multi-form
Channel unit Mixed cascading, form RFID cascade channel device, in order to improve the management to passages multiple in cascade unit, also
It is provided with host computer 4, host computer 4 is connected with two or more channel unit 1 respectively；
As shown in Figure 2, main channel of the present invention support 2 be respectively equipped with radio-frequency antenna group 5 from channel bracket 3,
In the present embodiment, each radio-frequency antenna group 5 is provided with two radio-frequency antennas, and main channel support 2 is additionally provided with radio frequency read-write cell, control
Unit and power circuit, are provided with microcontroller chip 6, memorizer 7, are used for controlling radio frequency in master/slave channel bracket in control unit
The antenna switching circuit 8 of two or more radio-frequency antenna switch operating in antenna sets, for controlling multiple master/slave channel bracket work
The channel switching circuit 9 of state, and for realizing, with host computer 4, the telecommunication circuit 10 that communicates, wherein microcontroller chip 6 respectively with
Memorizer 7, antenna control switching circuit 8, channel switching circuit 9, telecommunication circuit 10 are connected.
It is provided with radiofrequency signal transtation mission circuit and rf signal reception circuit in heretofore described radio frequency read-write cell, its
Middle rf signal reception circuit by envelope detection circuit, demodulation circuit of intermediate frequency, compare decision circuit and form；Radiofrequency signal sends electricity
Road includes modulation circuit 15 and the modulation circuit 15 being connected for the crystal oscillator 14 producing high-frequency signal with crystal oscillator 14 outfan
The match circuit that the power amplification circuit 12 that outfan is connected is connected with radio-frequency antenna；
Wherein power amplification circuit 12 is connected with the input of power distributing circuit 13, and power distributing circuit 13 is used for will
The radiofrequency signal of input is divided into multiple-channel output by power-division ratios, presses 1 using to the radiofrequency signal inputting in the present embodiment:1 point
The 1*2 power distributing circuit 13 exporting for two-way, the two-way output of power distributing circuit 13 is connected with channel switching circuit 9 respectively
Connect, channel switching circuit 9 includes three road RF signal switch circuit, the control signal input of channel switching circuit 9 and control
In unit, microcontroller chip 6 is connected, and microcontroller chip 6 control passage switching circuit 9 only has two-way radio-frequency (RF) switch electricity certain time
Road is path, and three road RF signal output of channel switching circuit 9 are connected with No. three antenna control switching circuits 8 respectively,
Every road antenna control switching circuit 8 all includes two groups of RF signal switch circuit, the control signal end of every road antenna switching circuit 8
All be connected with the microcontroller chip 6 in control unit, the outfan of three road antenna switching circuits 8 respectively with three road matching modules 11
It is connected, outfan radio-frequency antenna group 5, left side the penetrating from channel bracket with main channel support respectively of three road matching modules 11
Frequency antenna sets 5, right side are connected from the radio-frequency antenna group 5 of channel bracket, are wherein provided with radio-frequency antenna in each matching module 11
Radio-frequency antenna quantity identical match circuit in group 5.
As shown in Figure 4, radio-frequency antenna group 5 includes about two radio-frequency antennas placed 16, each radio-frequency antenna 16
Coil winding be right-angled trapezium shape, the hypotenuse of two radio-frequency antennas 16 is staggered relatively, and is partially overlapped by each other, and passes through during use
Paired switching main channel support and four radio-frequency antennas from channel bracket, are prevented effectively from skip；
Be additionally provided with for detecting whether the infrared detection circuit that passes through of someone in the present invention, one end of infrared detection circuit with
Microcontroller chip 6 in control unit is connected, and the other end is connected with infrared sensor, preferably by sending out in infrared sensor
Whether emitter, receptor are relatively fixed in adjacent pair main channel support 2, from channel bracket 3, have personnel to lead to for collection
Cross information, and this information is sent into microcontroller chip 6 and processed.
The finger indicating this channel bracket working condition can also be respectively provided with the present invention on master/slave channel bracket
Show lamp, in control unit, be provided with the indicating lamp control circuit being connected with microcontroller chip, indicating lamp control circuit is logical with main respectively
Road support, the display lamp from channel bracket are connected, and when the radio-frequency antenna group in this channel bracket is in running order, refer to
Show that lamp is bright.
The telecommunication circuit being provided with the control unit of main channel support 2 in the present invention can be used for current main channel support
2 are connected with outside host computer 4, assign set information by host computer 4, current main channel support 4 are set to main frame, when certain
When one main channel support is set to main frame, the control unit of this main channel support 2 can read remaining coupled master
The reading information of channel bracket 2.
The present invention compared with prior art, optimizes the structure of device, reduces production cost, and is led to by multiple antennas more
Road switching, poll, effectively reduce loss, have rational in infrastructure, low cost, read accurately etc. significantly advantage.
Claims (3)
1. a kind of RFID cascade channel device, it is characterised in that being provided with plural channel unit, sets in each channel unit
There are at least one main channel support and at least one next-door neighbour's main channel support and prop up from passage with what main channel support was placed in parallel
Frame, described main channel support with radio-frequency antenna group is respectively equipped with from channel bracket, it is single that main channel support is additionally provided with radio frequency read-write
Unit, control unit and power circuit, control unit is connected with radio frequency read-write cell, the wherein outfan of radio frequency read-write cell
It is connected with the radio-frequency antenna group in master/slave channel bracket respectively, be provided with microcontroller chip, memorizer in control unit, be used for controlling
Make the antenna switching circuit of two radio-frequency antenna switch operatings in radio-frequency antenna group in master/slave channel bracket, multiple for controlling
The channel switching circuit of master/slave channel bracket working condition, and the telecommunication circuit for communicating with host computer realization, wherein micro-
Control chip is connected with memorizer, antenna control switching circuit, channel switching circuit, telecommunication circuit respectively；Described radio frequency read-write
It is provided with radiofrequency signal transtation mission circuit and rf signal reception circuit, wherein rf signal reception circuit is by envelope detection in unit
Circuit, demodulation circuit of intermediate frequency, compare decision circuit composition；Radiofrequency signal transtation mission circuit includes the crystalline substance for producing high-frequency signal
Power amplification circuit and radio frequency sky that the modulation circuit being connected with crystal oscillator outfan that shakes is connected with modulation circuit outfan
The match circuit that line is connected；Wherein power amplification circuit is connected with the input of power distributing circuit, the radio frequency to input
Signal presses 1:The output of the 1 1*2 power distributing circuit being divided into two-way output is connected with channel switching circuit respectively, and passage switches
Circuit includes three road RF signal switch circuit, the control signal input of channel switching circuit and microcontroller chip in control unit
It is connected, three road RF signal output of channel switching circuit are connected with No. three antenna control switching circuits respectively, every road
Antenna control switching circuit all includes two groups of RF signal switch circuit, the control signal end of every road antenna switching circuit all with control
Microcontroller chip in unit processed is connected, and the outfan of three road antenna switching circuits is connected with three road matching modules respectively, and three
The outfan of road matching module respectively with the radio-frequency antenna group of main channel support, left side from the radio-frequency antenna group of channel bracket, the right side
Side is connected from the radio-frequency antenna group of channel bracket, is wherein provided with radio-frequency antenna quantity in radio-frequency antenna group in each matching module
Identical match circuit；It is provided with two radio-frequency antennas, specially two upper decentralizations in radio-frequency antenna group in master/slave channel bracket
The radio-frequency antenna of the equal-specification put, two radio-frequency antenna coil shapes and the number of turn are identical and are partially overlapped by each other, two radio frequency skies
Line coil winding is rectangle frame, and lap is the 1/5-1/2 of aerial coil area.
2. a kind of RFID cascade channel device according to claim 1 is it is characterised in that being provided with infrared detection circuit, infrared
One end of detection circuit is connected with the microcontroller chip in control unit, and the other end is connected with infrared sensor.
3. a kind of RFID cascade channel device according to claim 1 is it is characterised in that distinguish in master/slave channel bracket
It is provided with the display lamp for indicating this channel bracket working condition, in control unit, be provided with the display lamp being connected with microcontroller chip
Control circuit, indicating lamp control circuit is connected with main channel support, the display lamp from channel bracket respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310729666.6A CN103646263B (en) | 2013-12-26 | 2013-12-26 | Rfid cascade channel device |
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|---|---|---|---|
| CN201310729666.6A CN103646263B (en) | 2013-12-26 | 2013-12-26 | Rfid cascade channel device |
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| CN103646263A CN103646263A (en) | 2014-03-19 |
| CN103646263B true CN103646263B (en) | 2017-03-01 |
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| CN105353660B (en) * | 2015-11-30 | 2018-03-20 | 威海北洋电气集团股份有限公司 | Multi-channel control system |
| CN106761267A (en) * | 2016-08-31 | 2017-05-31 | 威海北洋光电信息技术股份公司 | High frequency cascades books antitheft door |
| CN107808468A (en) * | 2017-10-30 | 2018-03-16 | 北京正众信源传媒科技有限公司 | Commodity RFID identification plate and its application 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 |
| CN110766106A (en) * | 2019-09-02 | 2020-02-07 | 南京理工大学 | Dense archive information acquisition system based on switch switching control and high-frequency RFID technology |
| 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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