CN106778418B - A kind of device and method realizing label and efficiently reading - Google Patents
A kind of device and method realizing label and efficiently reading Download PDFInfo
- Publication number
- CN106778418B CN106778418B CN201611184717.1A CN201611184717A CN106778418B CN 106778418 B CN106778418 B CN 106778418B CN 201611184717 A CN201611184717 A CN 201611184717A CN 106778418 B CN106778418 B CN 106778418B
- Authority
- CN
- China
- Prior art keywords
- frequency
- radio
- antenna
- label
- radio frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10366—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications
- G06K7/10415—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications the interrogation device being fixed in its position, such as an access control device for reading wireless access cards, or a wireless ATM
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
- G06K17/0029—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device the arrangement being specially adapted for wireless interrogation of grouped or bundled articles tagged with wireless record carriers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Computer Networks & Wireless Communication (AREA)
- Theoretical Computer Science (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Engineering & Computer Science (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
The present invention relates to technical field of RFID, more particularly to a kind of device and method realizing label and efficiently reading, it is characterized in that each layer of multilayer frame body is equipped with more than two radio-frequency antennas, the RF tag reading mechanism includes radio-frequency antenna, power module, frequency read/write, wherein frequency read/write includes reader main control unit again, radio-frequency carrier transmitting module and radio frequency output switching control module, wherein power module is connected with frequency read/write, reader main control unit exports switching control module with radio frequency respectively, radio-frequency carrier transmitting module is connected, the output end of radio-frequency carrier transmitting module exports switching control module with radio frequency and is connected, the output end of radio frequency output switching control module is connected with more than two radio-frequency antennas respectively, the present invention is compared with prior art, improve radio frequency inspection card mode and algorithm , inspection card is cooperated using multiple antennas, subsequent label will not be detected and be impacted.
Description
Technical field
The present invention relates to technical field of RFID more particularly to one kind to be particularly suitable for the higher intelligent book of label densities
The device and method that the realization label in the fields such as frame, file administration, shelf inventory is efficiently read.
Background technique
In existing technical field of RFID, radio-frequency recognition system generally comprises radio-frequency antenna, for controlling radiofrequency signal
Transmitting and received module for reading and writing, and the RF tag being fixed on article to be identified, radio-frequency antenna exports radio frequency when use
Signal is read out RF tag, and the information carried on RF tag feeds back to the letter in module for reading and writing through radio-frequency antenna again
Number receive circuit, after handling the information received, the ID of the object to RF tag and represented by it can be completed
Identification.Within the system, radio-frequency antenna is the important component of entire radio-frequency recognition system, is completed in radio-frequency recognition system
The transmitting and reception in magnetic field.When Radio Frequency Identification Technology is applied to the fields such as Intelligent bookshelf and file administration, need radio frequency
Antenna alignment is the form that successively arranges of multiple frame antenna, and every layer of mutiple antennas is arranged at a certain pitch, the spacing of arrangement with
The reading distance dependent of antenna.
It makes an inventory in device in existing multiple antennas radio frequency identification, successively switches reading using double antenna, what this switching was read
The easily readable book labels in adjacent antenna frame area of mode, cause read access time longer, and single switching antenna inspection card
Time will be applied according to the antenna amount of single layer, and existing multiple antennas device of making an inventory is caused to make an inventory that the time is long, and user's use has
Obvious Caton sense, the not strong problem of real-time.
Summary of the invention
The present invention depends on single antenna or double antenna list for inspection card mode of the conventional radio frequency identification technology for multiple antennas
The form solely detected, the occasion more for the labels such as book and file management and antenna amount successively switch inspection card using antenna
Mode causes the label detected in magnetic field to repeat to be detected, subsequent label is interfered to read, and causes the inspection card time long, inspection
The problem of card low efficiency, proposes a kind of inspection card efficiency for substantially increasing single layer antenna, fundamentally improves device of making an inventory
Real-time the device and method that efficiently reads of realization label.
The present invention can be achieved by the following measures:
A kind of device realizing label and efficiently reading is equipped with multilayer frame body, and label and label to be detected are placed on frame body and is carried
Body is additionally provided with label reading mechanism on frame body, it is characterised in that each layer of multilayer frame body is equipped with more than two radio frequency days
Line, the RF tag reading mechanism include radio-frequency antenna, power module, frequency read/write, and wherein frequency read/write includes again
Reader main control unit, radio-frequency carrier transmitting module and radio frequency output switching control module, wherein power module and radio frequency are read
It writes device to be connected, reader main control unit exports switching control module with radio frequency respectively, radio-frequency carrier transmitting module is connected, and penetrates
The output end of frequency carrier wave transmitting module exports switching control module with radio frequency and is connected, the output of radio frequency output switching control module
End is connected with more than two radio-frequency antennas respectively.
More than two radio-frequency antennas are discharged on every layer of frame body of the present invention, frame body uses metal plate between layers
With shielded radio frequency magnetic field, the crosstalk of interlayer inspection card is avoided.
Radio-frequency antenna of the present invention, while playing the role of making an inventory label and separating cargo, it is snapped past in radio frequency inspection
Switching magnetic field operation is controlled by reader in journey, as long as theoretically reader output power is enough, when guaranteeing that single layer is read
Between under conditions of, more radio-frequency antennas can be cascaded.
Frequency read/write of the present invention includes reader main control unit, radio-frequency carrier transmitting module, radio frequency output switching
Control module, wherein reader main control unit is mainly responsible for the debugging of radio frequency transmissions and the detection of label return signal,
It is the core of entire radio frequency part, radio-frequency carrier transmitting module is mainly responsible for generation radio-frequency carrier, the transmission for modulated signal
And the magnetic field 13.56M is generated to maintain the state of activation of label, radio frequency output switching control module is to overall coordination radio frequency
It sends, is still controlled by reader main control unit, be responsible for whether control radio frequency exports and whether magnetic field output is with modulation letter
Number.The radiofrequency signal that antenna only in inspection card-like state is launched has modulated signal, and the radiofrequency signal of remaining antenna transmitting is only
There is 13.56M radio-frequency carrier, output power can be less than inspection card switching antenna, and to maintain tag activation status, this mode is removed
Power consumption can be reduced, can also reduce adjacent two layers antenna alter reading rate.
The invention also provides a kind of methods realizing label and efficiently reading, it is characterised in that including following content:
Step 1: system electrification, frequency read/write complete the load of master data；
Step 2: after the completion of the master data normal load of frequency read/write, exporting antenna switch control signal and radio frequency
Signal, wherein antenna switch control signal is sent to radio frequency output switching control module, controls each antenna switching control respectively
The conducting of a HF switch and the selection of carrier wave and radiofrequency signal in module are sent, and the first two radio-frequency antenna 3 is in work
State all detects the corresponding frame interior label of the antenna；
Step 3: the switching of reader main control unit exports the control signal of switching control module to radio frequency, and the of radio-frequency antenna
Rf modulated signal no longer emits all the way, only emits radio-frequency carrier, third road radio frequency is opened, and is started with the second road radio-frequency antenna
Synchronous radiofrequency signal is sent, and completes the reading of corresponding second antenna frame interior label；
Step 4: after the two or three road radio-frequency antenna is completed to the reading of its corresponding range interior label, reader main control unit
Radio frequency switching signal is exported again, by control radio frequency output switching control module, is successively opened radio-frequency antenna, is completed flood
Label testing process；
Step 5: reader control unit switches to next layer, repeats the above steps, until the detection of whole frame label is completed.
Compared with prior art, the present invention improving radio frequency inspection card mode and algorithm, inspection card is cooperated using multiple antennas, single layer is
The antenna of unlatching its magnetic field after subsequent antenna opens inspection card is in the open state always, and the label detected is without departing from magnetic
, to will not detect and impact to subsequent label in stationary state is set always.Have the advantage that recognition speed
It is fast: can to prevent the label detected from repeating to be read behind disconnected magnetic field using the continual inspection card mode in magnetic field, interfere subsequent
Label read, cause unnecessary time to waste, the time that label is made an inventory substantially shortens；Better real-time: efficiency of making an inventory
Raising, can be greatly optimized whether article in the real-time of frame shows that the long-time for avoiding article condition from changing to display is prolonged
Late；Have a wide range of application: the technology can be widely applied to the fields such as the higher book and file of label densities, goods checking；It is lower
Cost: compared to traditional inspection card apparatus, under the premise of guaranteeing the identical inspection card time, every layer can cascade more radio frequency days
Line stores and puts more cargos, to save cost.
Detailed description of the invention:
Attached drawing 1 is structural schematic diagram of the invention.
Attached drawing 2 is circuit block diagram of the invention.
Appended drawing reference: frame body 1, label and label carrier 2, power module 4, reader debugging module 5, are penetrated radio-frequency antenna 3
Frequency carrier wave transmitting module 6, radio frequency output switching control module 7, frequency read/write 8
Specific embodiment:
The present invention will be further described below with reference to the drawings.
Embodiment 1:
As shown in Figure 1, the efficient reading device of a kind of multiple antennas proposed by the present invention, described device include: frame body 1, label
And label carrier 2, radio-frequency antenna 3, power module 4, frequency read/write 8, wherein frequency read/write 8 includes reader master control list again
Member 5, radio-frequency carrier transmitting module 6 and radio frequency output switching control module 7.1 every layer of the frame body disposes multiple radio frequency days
Line 3 can substantially increase inspection under the premise of not changing cargo disposing way using the efficient reading manner in the present invention
The efficiency of card, same layer antenna successively opens magnetic field in frame body, makes to enter magnetic field and the label that is detected is in is activated simultaneously always
Static state is set, the label for only being activated and not detected by magnetic field of inspection card is participated in magnetic field, so as to utmostly
Reduction inspection card process complexity, effectively shorten the time of making an inventory, also reduce skip rate to a certain extent.
The frame body 1 discharges multiple radio-frequency antennas 3 on every layer, is theoretically adopted between layers using of the present invention
With metal plate with shielded radio frequency magnetic field, the crosstalk of interlayer inspection card is avoided.
The radio-frequency antenna 3, while playing the role of making an inventory label and separating cargo, it is opened during radio frequency is examined and blocked
It closes magnetic field operation to be controlled by reader, as long as theoretically reader output power is enough, in the item for guaranteeing single layer read access time
Under part, more radio-frequency antennas can be cascaded.
The frequency read/write 8 includes reader main control unit 5, radio-frequency carrier transmitting module 6, radio frequency output switching control
Molding block 7, wherein reader main control unit 5 is mainly responsible for the debugging of radio frequency transmissions and the detection of label return signal,
It is the core of entire radio frequency part, radio-frequency carrier transmitting module 6 is mainly responsible for generation radio-frequency carrier, the transmission for modulated signal
And the magnetic field 13.56M is generated to maintain the state of activation of label, radio frequency output switching control module 7 is to overall coordination radio frequency
Transmission, still controlled by reader main control unit 5, be responsible for control radio frequency whether export and magnetic field output whether with adjust
Signal processed.The radiofrequency signal that antenna only in inspection card-like state is launched has modulated signal, the radio frequency letter of remaining antenna transmitting
Number only 13.56M radio-frequency carrier, output power can be less than inspection card switching antenna, to maintain tag activation status, this side
For formula in addition to that can reduce power consumption, can also reduce adjacent two layers antenna alters reading rate.
Embodiment 2:
Step 1: system electrification, frequency read/write complete the load of master data.
Step 2: after the completion of the master data normal load of frequency read/write, exporting antenna switch control signal and radio frequency
Signal, wherein antenna switch control signal is sent to radio frequency output switching control module 7, controls each antenna switching control respectively
The conducting of a HF switch and the selection of carrier wave and radiofrequency signal in module are sent, and the first two radio-frequency antenna 3 is in work
State all detects the corresponding frame interior label of the antenna；
Step 3: the switching of reader main control unit 5 exports the control signal of switching control module 7, radio-frequency antenna 3 to radio frequency
First via rf modulated signal no longer emit, only emit radio-frequency carrier, third road radio frequency is opened, and with the second road radio-frequency antenna
Start synchronous radiofrequency signal to send, completes the reading of corresponding second antenna frame interior label.
Step 4: after the two or three road radio-frequency antenna is completed to the reading of its corresponding range interior label, reader main control unit
5 export radio frequency switching signal again, by control radio frequency output switching control module 7, successively open radio-frequency antenna, complete flood
Label testing process；
Step 5: reader control unit switches to next layer, repeats the above steps, until the detection of whole frame label is completed.
Compared with prior art, the present invention improving radio frequency inspection card mode and algorithm, inspection card is cooperated using multiple antennas, single layer is
The antenna of unlatching its magnetic field after subsequent antenna opens inspection card is in the open state always, and the label detected is without departing from magnetic
, to will not detect and impact to subsequent label in stationary state is set always.Have the advantage that recognition speed
It is fast: can to prevent the label detected from repeating to be read behind disconnected magnetic field using the continual inspection card mode in magnetic field, interfere subsequent
Label read, cause unnecessary time to waste, the time that label is made an inventory substantially shortens；Better real-time: efficiency of making an inventory
Raising, can be greatly optimized whether article in the real-time of frame shows that the long-time for avoiding article condition from changing to display is prolonged
Late；Have a wide range of application: the technology can be widely applied to the fields such as the higher book and file of label densities, goods checking；It is lower
Cost: compared to traditional inspection card apparatus, under the premise of guaranteeing the identical inspection card time, every layer can cascade more radio frequency days
Line stores and puts more cargos, to save cost.
Claims (2)
1. a kind of device realizing label and efficiently reading is equipped with multilayer frame body, places label to be detected and label carrier on frame body,
Label reading mechanism is additionally provided on frame body, it is characterised in that each layer of multilayer frame body is equipped with more than two radio-frequency antennas,
RF tag reading mechanism includes radio-frequency antenna, power module, frequency read/write, and wherein frequency read/write includes reader master again
Unit, radio-frequency carrier transmitting module and radio frequency output switching control module are controlled, wherein power module is connected with frequency read/write
It connects, reader main control unit exports switching control module with radio frequency respectively, radio-frequency carrier transmitting module is connected, radio-frequency carrier hair
Penetrate module output end and radio frequency output switching control module be connected, radio frequency output switching control module output end respectively with
More than two radio-frequency antennas are connected；
More than two radio-frequency antennas are discharged on every layer of the frame body, frame body uses metal plate with shielded radio frequency between layers
Magnetic field avoids the crosstalk of interlayer inspection card；
The radio-frequency antenna, while playing the role of making an inventory label and separating cargo, magnetic is switched during radio frequency is examined and blocked
Field operation is controlled by reader, as long as reader output power is enough, under conditions of guaranteeing single layer read access time, and Ke Yiji
Join more radio-frequency antennas；
The frequency read/write switches control module comprising reader main control unit, radio-frequency carrier transmitting module, radio frequency output,
Wherein reader main control unit is mainly responsible for the debugging of radio frequency transmissions and the detection of label return signal, is entire radio frequency
Partial core, radio-frequency carrier transmitting module are mainly responsible for generation radio-frequency carrier, the transmission and generation for modulated signal
The magnetic field 13.56M is to maintain the state of activation of label, transmission of the radio frequency output switching control module to overall coordination radio frequency,
It is still controlled by reader main control unit, is responsible for whether control radio frequency exports and whether magnetic field output is with modulated signal, only
The radiofrequency signal that antenna in inspection card-like state is launched has modulated signal, and the radiofrequency signal of remaining antenna transmitting only has 13.56M
Radio-frequency carrier, output power are less than inspection card switching antenna, and to maintain tag activation status, this mode is in addition to that can reduce function
Consumption, can also reduce adjacent two layers antenna alters reading rate.
2. a kind of method realizing label and efficiently reading, it is characterised in that including following content:
Step 1: system electrification, frequency read/write complete the load of master data；
Step 2: after the completion of the master data normal load of frequency read/write, exporting antenna switch control signal and radio frequency letter
Number, wherein antenna switch control signal is sent to radio frequency output switching control module, controls each antenna switching control mould respectively
The conducting of a HF switch and the selection of carrier wave and radiofrequency signal in block are sent, and the first two radio-frequency antenna is in work shape
State all detects the corresponding frame interior label of the antenna；
Step 3: the switching of reader main control unit exports the control signal of switching control module, the first via of radio-frequency antenna to radio frequency
Rf modulated signal no longer emits, and only emits radio-frequency carrier, and third road radio frequency is opened, and starts with the second road radio-frequency antenna synchronous
Radiofrequency signal is sent, and completes the reading of corresponding second antenna frame interior label；
Step 4: after the two or three road radio-frequency antenna is completed to the reading of its corresponding range interior label, reader main control unit is again
Radio frequency switching signal is exported, by control radio frequency output switching control module, radio-frequency antenna is successively opened, completes the label of flood
Testing process；
Step 5: reader control unit switches to next layer, repeats the above steps, until the detection of whole frame label is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611184717.1A CN106778418B (en) | 2016-12-20 | 2016-12-20 | A kind of device and method realizing label and efficiently reading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611184717.1A CN106778418B (en) | 2016-12-20 | 2016-12-20 | A kind of device and method realizing label and efficiently reading |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106778418A CN106778418A (en) | 2017-05-31 |
| CN106778418B true CN106778418B (en) | 2019-10-25 |
Family
ID=58895933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611184717.1A Active CN106778418B (en) | 2016-12-20 | 2016-12-20 | A kind of device and method realizing label and efficiently reading |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106778418B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107968247B (en) * | 2017-11-28 | 2020-01-10 | 上海坤锐电子科技有限公司 | Antenna structure, reader and intelligent vending equipment |
| CN112241637B (en) * | 2019-07-19 | 2024-05-14 | 上海双十信息科技有限公司 | RFID reader-writer and method for externally controlling on-off of RFID reader-writer |
| CN110909554B (en) * | 2019-10-09 | 2023-04-04 | 威海北洋光电信息技术股份公司 | RFID intelligent bookshelf multi-row synchronous detection method and bookshelf |
| CN111602973A (en) * | 2019-12-18 | 2020-09-01 | 江苏云涌电子科技股份有限公司 | Management system and method based on Internet of things technology |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103699917A (en) * | 2013-12-27 | 2014-04-02 | 威海北洋电气集团股份有限公司 | RFID (radio frequency identification device) decoupled compact rack |
| CN103745181A (en) * | 2013-12-31 | 2014-04-23 | 浙江网新技术有限公司 | Conflict prevention method for low-frequency activated active tags |
| CN203616770U (en) * | 2013-12-24 | 2014-05-28 | 威海北洋电气集团股份有限公司 | Intelligent bookshelf based on RFID technology |
| CN203746093U (en) * | 2013-12-11 | 2014-07-30 | 威海北洋电气集团股份有限公司 | RFID dense archive management device |
| CN105846922A (en) * | 2016-05-20 | 2016-08-10 | 深圳市远望谷信息技术股份有限公司 | Method and device for RFID tag to determine master device in frequency division multiplexing system |
-
2016
- 2016-12-20 CN CN201611184717.1A patent/CN106778418B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203746093U (en) * | 2013-12-11 | 2014-07-30 | 威海北洋电气集团股份有限公司 | RFID dense archive management device |
| CN203616770U (en) * | 2013-12-24 | 2014-05-28 | 威海北洋电气集团股份有限公司 | Intelligent bookshelf based on RFID technology |
| CN103699917A (en) * | 2013-12-27 | 2014-04-02 | 威海北洋电气集团股份有限公司 | RFID (radio frequency identification device) decoupled compact rack |
| CN103745181A (en) * | 2013-12-31 | 2014-04-23 | 浙江网新技术有限公司 | Conflict prevention method for low-frequency activated active tags |
| CN105846922A (en) * | 2016-05-20 | 2016-08-10 | 深圳市远望谷信息技术股份有限公司 | Method and device for RFID tag to determine master device in frequency division multiplexing system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106778418A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106778418B (en) | A kind of device and method realizing label and efficiently reading | |
| CN103584516A (en) | Intelligent file cabinet, file management system and file positioning method | |
| CN102004895B (en) | Time slot scanning anti-collision method based on collision precheck | |
| CN102539970A (en) | RFID (radio frequency identification) equipment testing method and system | |
| CN102609738A (en) | RFID (radio frequency identification device) multi-antenna reader-writer | |
| EP2191614A2 (en) | System and method for allowing multiple rfid reader devices to read rfid tags without collision | |
| CN108416409A (en) | Radio-frequency identification reader/writer, radio-frequency recognition system and automatic vending machine | |
| CN109512158B (en) | RFID intelligent storage cabinet and application thereof | |
| CN104331679B (en) | A kind of RFID tag anti-collision method based on physical-layer network coding | |
| CN103646263A (en) | Radio frequency identification (RFID) cascade connection channel device | |
| CN102236772B (en) | Antenna switching method, device and system and antenna addressing method in radio frequency identification (RFID) system | |
| CN101803223A (en) | Method and device for the contact-free transmission of data from and/or to a plurality of data or information carriers, preferably in the form of RFID tags | |
| CN201019272Y (en) | Intelligent bookshelf | |
| CN109460688B (en) | Three-dimensional settlement channel device based on delta-shaped antenna and using method thereof | |
| CN202838372U (en) | Storage detection device | |
| CN201741160U (en) | Intelligent radio-frequency label identification system | |
| CN204347908U (en) | A kind of warehousing and storage activities device based on RFID technique | |
| CN203276293U (en) | Intelligent positioning management device for test tube | |
| CN115048950A (en) | Radio frequency synchronization method of intelligent book detection device based on CAN bus | |
| CN106886733A (en) | The method for safely carrying out and equipment of a kind of ultrahigh frequency RFID electronic tag | |
| CN104537749A (en) | RFID-based ticket checking system | |
| CN106446985A (en) | Radio frequency identification tags write-in device | |
| EP1745404B1 (en) | Circuit for processing output signals of communication stages | |
| CN110909554B (en) | RFID intelligent bookshelf multi-row synchronous detection method and bookshelf | |
| CN207503333U (en) | The disk inventory system of intelligent vending machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |