CN114120869A - Wireless electronic volume label and system thereof - Google Patents
Wireless electronic volume label and system thereof Download PDFInfo
- Publication number
- CN114120869A CN114120869A CN202010863298.4A CN202010863298A CN114120869A CN 114120869 A CN114120869 A CN 114120869A CN 202010863298 A CN202010863298 A CN 202010863298A CN 114120869 A CN114120869 A CN 114120869A
- Authority
- CN
- China
- Prior art keywords
- module
- signal
- wireless electronic
- electronic tag
- wireless
- 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.)
- Pending
Links
- 239000004020 conductor Substances 0.000 claims abstract description 12
- 238000004146 energy storage Methods 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000004544 sputter deposition Methods 0.000 claims description 3
- 238000002834 transmittance Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000002452 interceptive effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
A wireless electronic volume label and a system thereof are provided, wherein the wireless electronic volume label comprises a display module, a rectifying antenna module and a control driving module. The display module is provided with a display surface, the rectifying antenna module is arranged on the display surface of the display module and used for receiving electromagnetic wave signals and converting the electromagnetic wave signals into electric energy signals, the rectifying antenna module is made of a light-transmitting conductive material, the control driving module is used for converting the electric energy signals into electric energy required by operation and sending command signals to the display module, and the display module is further used for displaying volume label signals on the display surface according to the command signals.
Description
Technical Field
The present invention relates to a wireless electronic tag and a system thereof, and more particularly, to a wireless electronic tag controlled by wireless communication and a system thereof.
Background
Generally, wireless electronic tags are commonly used in stores, shops, department stores, etc. to display the price of goods and related data. The wireless electronic tag can also replace a paper tag or a card, and the information displayed by the wireless electronic tag can be freely updated. In order to further reduce the volume or area of the wireless electronic tag, the conventional wireless electronic tag uses an antenna instead of an input device for receiving a wireless signal from an external control device to update the information displayed by the wireless electronic tag.
However, in order to avoid the antenna shielding the display unit of the wireless electronic tag or preventing the display unit from interfering with the antenna to receive the wireless signal, the antenna and the display unit in the prior art are designed to avoid overlapping, in other words, the volume or area of the wireless electronic tag is increased by disposing the antenna, and a separate space for disposing the battery is also required. Therefore, how to provide a wireless electronic tag and a system thereof that can further reduce the volume or area is an urgent issue to be solved in the industry.
Disclosure of Invention
In order to solve the above problems of the prior art, an object of the present invention is to provide a wireless electronic tag and a system thereof, which can further reduce the volume or area.
In order to achieve the above object, the wireless electronic volume label of the present invention comprises a display module, a rectifying antenna module and a control driving module. The display module is provided with a display surface, the rectifying antenna module is arranged on the display surface of the display module and used for receiving electromagnetic wave signals and converting the electromagnetic wave signals into electric energy signals, the rectifying antenna module is made of a light-transmitting conductive material, the control driving module is used for converting the electric energy signals into electric energy required by operation and sending command signals to the display module, and the display module is further used for displaying volume label signals on the display surface according to the command signals.
In one embodiment, the rectenna module has a light transmittance of between 50% and 95%.
In one embodiment, the rectenna module is made of metal mesh, ITO, graphene film, or thin metal sputtering material.
In one embodiment, the rectenna module includes at least one set of Dipole antennas (Dipole antenna) and at least one diode connected to the Dipole antennas to form a circuit for converting electromagnetic wave signals into electrical energy signals.
In an embodiment, the control driving module further includes a rectifying and filtering unit, and the rectifying and filtering unit is configured to receive the power signal output by the rectifying and antenna module and convert the power signal into power.
In an embodiment, the control driving module further includes an energy storage unit, and the energy storage unit is used for storing the electric energy output by the rectifying and filtering unit and supplying the electric energy to the display module.
In one embodiment, the energy storage unit is a solid-state battery, a battery, or a super capacitor.
In one embodiment, the display module is electronic paper (ePaper).
In an embodiment, the control driving module further includes a signal antenna unit, the signal antenna unit is configured to receive the wireless control signal, and the control driving module is further configured to generate a command signal according to the wireless control signal.
In an embodiment, the control driver module is further configured to generate a report signal and transmit the report signal through the signal antenna unit.
The invention also provides a wireless electronic volume label system, which comprises the wireless electronic volume label and a remote control device, wherein the remote control device is used for generating a wireless control signal and sending the wireless control signal to the control driving module in a wireless communication mode.
Compared with the prior art, the wireless electronic volume label of the invention uses the light-transmitting conductive material to form the rectifying antenna module, so that the rectifying antenna module can be arranged on the display surface of the display module without hindering the display function of the display module, and the space above the display surface of the display module can be effectively utilized, thereby achieving the effect of reducing the volume or the area of the wireless electronic volume label. In addition, the control driving module can also comprise a rectifying and filtering unit, an energy storage unit or a signal antenna unit, wherein the signal antenna unit is used for receiving the wireless control signal, converting the electric energy signal into electric energy through the rectifying and filtering unit and storing the electric energy signal by the energy storage unit, so that the battery space can be saved.
Drawings
Fig. 1a is a schematic structural diagram of a wireless electronic tag according to a first embodiment of the present invention.
Fig. 1b is a schematic structural diagram of a wireless electronic tag according to a second embodiment of the present invention.
Fig. 1c is a schematic diagram of functional modules of a wireless electronic tag according to the first or second embodiment of the present invention.
Fig. 2 is a functional block diagram of a wireless electronic tag according to a third embodiment of the present invention.
Fig. 3a is a schematic structural diagram of a rectenna module according to a fourth embodiment of the present invention.
Fig. 3b is a schematic structural diagram of a rectenna module according to a fifth embodiment of the present invention.
Fig. 3c is a schematic structural diagram of a rectenna module according to a sixth embodiment of the present invention.
Fig. 4 is a schematic diagram of a wireless electronic tag system according to a third embodiment of the invention.
Description of the symbols:
10 display module
100 display surface
11 rectifying antenna module
110 dipole antenna
111 diode
12 control drive module
120 rectification filter unit
121 energy storage unit
122 signal antenna unit
2 Wireless electronic volume label
3 remote control device
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for understanding and reading the present disclosure, and are not used for limiting the conditions of the present disclosure, which will not be technically significant, and any modifications of the structures, ratios, or adjustments of the sizes and the structures should fall within the scope of the present disclosure without affecting the efficacy and attainment of the present disclosure. In addition, the terms "above", "inside", "outside", "bottom" and "one" used in the present specification are for the sake of clarity only, and are not intended to limit the scope of the present invention, and their relative changes and modifications are to be understood as being included within the scope of the present invention without substantial technical changes.
Referring to fig. 1a, fig. 1b and fig. 1c, fig. 1a is a schematic structural diagram of a wireless electronic tag according to a first embodiment of the present invention, fig. 1b is a schematic structural diagram of a wireless electronic tag according to a second embodiment of the present invention, and fig. 1c is a schematic functional module diagram of a wireless electronic tag according to the first or second embodiment of the present invention. As shown in the figure, the wireless electronic volume label of the present invention includes a display module 10, a rectifying antenna module 11 and a control driving module 12.
The display module 10 has a display surface 100, and all or a part of the area on the display surface 100 can be used for displaying label signals, such as patterns or characters. The rectenna module 11 is disposed on the display surface 100 of the display module 10, the rectenna module 11 is for receiving electromagnetic wave signals, and the rectenna module 11 is made of a transparent conductive material.
The control driving module 12 is configured to send a command signal to the display module 10, wherein the display module 10 is further configured to display a tag signal on the display surface 100 according to the command signal. In the first embodiment, the control driving module 12 is disposed on one side of the display module 10, in the second embodiment, the control driving module 12 is disposed on the back side (opposite to the display surface 100) of the display module 10, and in other embodiments, the control driving module 12 may also be disposed on the display surface 100 of the display module 10, but not limited thereto. The control driving module 12 may be implemented by a Microcontroller (MCU) or a driving circuit.
The rectifying antenna module 11 is used for receiving the electromagnetic wave signal and converting the electromagnetic wave signal into the electric energy signal, so that the long-distance power supply can be realized, and batteries or electric storage equipment with a small volume can be not used. Since the rectenna module 11 is made of a transparent conductive material, the tag signal on the display surface 100 is not shielded, so that all areas on the display surface 100 can be used for arranging the rectenna module 11, and the wireless electronic tag of the present invention has a smaller volume or area than the prior art under the condition that the areas of the display surface 100 are the same.
In one embodiment, the rectenna module 11 has a transmittance of between 50% and 95%. The rectenna module 11 is made of metal mesh, ITO, graphene film or thin metal sputtering material, but not limited thereto.
Referring to fig. 2, fig. 2 is a functional module diagram of a wireless electronic tag according to a third embodiment of the present invention. In an embodiment, the control driving module 12 may further include a rectifying and filtering unit 120. The rectifying and filtering unit 120 is configured to receive the power signal from the rectifying antenna module 11 and convert the power signal into electric power. The rectifying and filtering unit 120 may include a matching circuit (matching circuit), a rectifier circuit (rectifier circuit), a direct current filter (DC pass filter), or a Power Management Unit (PMU).
In an embodiment, the control driving module 12 may further include an energy storage unit 121, and the energy storage unit 121 is used to store the electric energy output by the rectifying and filtering unit 120 and to supply the electric energy to the display module 10. The energy storage unit 121 may be a solid-state battery, a rechargeable battery, or a super capacitor, but is not limited thereto. In cooperation with the wireless charging function of the rectenna module 11 and the rectifying and filtering unit 120, the wireless electronic tag can be continuously maintained without replacing the energy storage unit 121.
In an embodiment, the control driving module 12 may further include a signal antenna unit 122. The signal antenna unit 122 is configured to receive a wireless control signal, and the control driving module 12 is further configured to generate a command signal according to the wireless control signal. The remote communication and the remote charging can be simultaneously performed by the rectenna module 11 and the signal antenna unit 122. For example, the signal antenna unit 122 may receive the wireless control signal using a frequency Band of bluetooth communication, and the rectenna module 11 may receive the electromagnetic wave signal using ISM Band (e.g. 915MHz), but not limited thereto, in other embodiments, the signal antenna unit 122 and the rectenna module 11 may also use other frequency bands, such as but not limited to receiving the electromagnetic wave signal of 2.4GHz or 5GHz based on IEEE 802.11 standard, and the frequency bands used by the signal antenna unit 122 and the rectenna module 11 may be the same or different.
In a further embodiment, the signal antenna unit 122 may be made of a transparent conductive material, and may be disposed on the display surface 100 of the display module 10, but not limited thereto.
In one embodiment, the control driver module 12 is further configured to generate a report signal and transmit the report signal through the signal antenna unit 122. The control driver module 12 may generate a report signal when the tag signal of the display module 10 is updated or an abnormal state occurs, and send the report signal through the signal antenna unit 122 to notify an external device.
Referring to fig. 3a, fig. 3b and fig. 3c, fig. 3a, fig. 3b and fig. 3c are respectively schematic structural diagrams of a rectenna module according to fourth to sixth embodiments of the present invention. As shown, the rectenna module 11 may include at least one set of dipole antennas 110 and at least one diode 111, the diode 111 being coupled to the dipole antennas 110 to form a circuit for converting electromagnetic wave signals into electrical energy signals. The dipole antenna 110 is composed of a pair of symmetrically placed conductors, such as two symmetrical conductors (not including the diode 111) shown by dashed line in fig. 3a, 3b and 3c, and a symmetrical rectangular conductor in the embodiments of fig. 3a, 3b and 3c, but not limited thereto, the dipole antenna 110 may be composed of conductors with other shapes. In addition, the number of the dipole antenna 110 and the diode 111 may be adjusted according to the connection mode or the area size of the wireless electronic tag, and the invention is not limited thereto.
As shown in fig. 3a, 3b and 3c, the circuit formed by the connection of the dipole antenna 110 and the diode 111 can convert and rectify the electromagnetic wave signal into an electric energy signal, and can receive the electromagnetic wave signals with different polarity directions by changing the connection of the dipole antenna 110 and the diode 111, or further adjust the conversion efficiency. In addition, with the structure of the embodiments, the dipole antenna 110 and the diode 111 can be disposed on the same plane, and conjugate matching can be achieved without using other matching circuits.
In an embodiment, the display module 10 may be an electronic paper, but not limited thereto.
Referring to fig. 3, fig. 3 is a schematic diagram of a wireless electronic tag system according to a third embodiment of the present invention. The present invention also provides a wireless electronic volume label system, comprising: the wireless electronic tag 2 and the remote control device 3 according to any embodiment of the present invention are used for generating a wireless control signal and transmitting the wireless control signal through wireless communication. The remote control device 3 may be an electronic device with a wireless communication function and an input interface, such as a computer, a server, or a mobile device, and may also be mounted on a mobile device such as an unmanned aerial vehicle or a sweeping robot to help compensate for dead angles of communication.
In summary, the wireless electronic tag of the present invention uses the transparent conductive material to form the rectenna module, so that the rectenna module can be disposed on the display surface of the display module without interfering with the display function of the display module, and the space above the display surface of the display module can be effectively used, thereby achieving the effect of reducing the volume or area of the wireless electronic tag. In addition, the control driving module can also comprise a rectifying and filtering unit, an energy storage unit or a signal antenna unit, wherein the signal antenna unit is used for receiving the wireless control signal, converting the electric energy signal into electric energy through the rectifying and filtering unit and storing the electric energy signal by the energy storage unit, so that the battery space can be saved.
The features and spirit of the present invention will become more apparent to those skilled in the art from the description of the preferred embodiments given above, which are given by way of illustration only, and not by way of limitation, of the principles and functions of the present invention. Thus, any modifications and variations may be made to the above-described embodiments without departing from the spirit of the invention, and the scope of the invention is to be determined by the appended claims.
Claims (11)
1. A wireless electronic tag, comprising:
a display module having a display surface;
the rectifying antenna module is arranged on the display surface of the display module and used for receiving electromagnetic wave signals and converting the electromagnetic wave signals into electric energy signals, wherein the rectifying antenna module is made of a light-transmitting conductive material; and
a control driving module for converting the electric energy signal into electric energy required by operation and sending a command signal to the display module,
the display module is further used for displaying a volume label signal on the display surface according to the command signal.
2. The wireless electronic tag of claim 1, wherein the rectenna module has a transmittance of 50% to 95%.
3. The wireless electronic tag of claim 1, wherein the rectifying antenna module is made of metal mesh, ITO, graphene film or thin metal sputtering material.
4. The wireless electronic tag of claim 1, wherein the rectenna module comprises at least one set of dipole antennas and at least one diode connected to the dipole antennas to form a circuit for converting the electromagnetic wave signal into the electrical energy signal.
5. The wireless electronic tag of claim 1, wherein the control driving module further comprises:
and the rectification filtering unit is used for receiving the electric energy signal output by the rectification antenna module and converting the electric energy signal into electric energy.
6. The wireless electronic tag of claim 5, wherein the control driving module further comprises:
and the energy storage unit is used for storing the electric energy output by the rectifying and filtering unit and supplying the electric energy to the display module.
7. The wireless electronic tag of claim 6, wherein the energy storage unit is a solid-state battery, a rechargeable battery or a super capacitor.
8. The wireless electronic tag of claim 1, wherein the display module is electronic paper.
9. The wireless electronic tag of claim 1, wherein the control driving module comprises:
a signal antenna unit for receiving the wireless control signal,
the control driving module is further used for generating the command signal according to the wireless control signal.
10. The wireless electronic tag of claim 9, wherein the control driver module is further configured to generate a report signal and transmit the report signal through the signal antenna unit.
11. A wireless electronic tag system, the system comprising:
the wireless electronic tag of any of claims 1-10; and
and the remote control device is used for generating the wireless control signal and sending the wireless control signal to the control driving module in a wireless communication mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010863298.4A CN114120869A (en) | 2020-08-25 | 2020-08-25 | Wireless electronic volume label and system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010863298.4A CN114120869A (en) | 2020-08-25 | 2020-08-25 | Wireless electronic volume label and system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114120869A true CN114120869A (en) | 2022-03-01 |
Family
ID=80374009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010863298.4A Pending CN114120869A (en) | 2020-08-25 | 2020-08-25 | Wireless electronic volume label and system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114120869A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05290229A (en) * | 1992-04-06 | 1993-11-05 | Kyodo Printing Co Ltd | Non-contact ic card and its identification system |
| JPH07271938A (en) * | 1994-03-29 | 1995-10-20 | Sony Corp | Information card |
| US6400274B1 (en) * | 1995-08-31 | 2002-06-04 | Intermec Ip Corp. | High-performance mobile power antennas |
| JP2006014104A (en) * | 2004-06-29 | 2006-01-12 | Nippon Dengyo Kosaku Co Ltd | Ring antenna |
| CN101236613A (en) * | 2007-01-30 | 2008-08-06 | 力晶半导体股份有限公司 | Electronic volume label, volume label identification system and method |
| US20100141452A1 (en) * | 2008-12-10 | 2010-06-10 | Sensormatic Electronics Corporation | Method and system for deactivation of combination eas/rfid tags |
| US20110269397A1 (en) * | 2008-12-30 | 2011-11-03 | Telecom Italia S.P.A. | Radio Coverage Extender for a Personal Area Network Node Embedded in a User Communications Terminal |
| CN202422176U (en) * | 2011-08-17 | 2012-09-05 | 上海祯显电子科技有限公司 | Antenna-hidden type electronic label |
| CN203338386U (en) * | 2013-07-10 | 2013-12-11 | 上海理想信息产业（集团）有限公司 | RFID (radio frequency identification devices) screen display tag capable of being wirelessly charged |
| US20160181867A1 (en) * | 2014-12-23 | 2016-06-23 | Palo Alto Research Center Incorporated | Rectifying Circuit For Multiband Radio Frequency (RF) Energy Harvesting |
| US20190140766A1 (en) * | 2016-04-25 | 2019-05-09 | University Of Maryland, College Park | System and method for wireless power transfer using time reversed electromagnetic wave propagation |
| CN110165757A (en) * | 2019-06-03 | 2019-08-23 | 浙江大学 | A kind of transparent wireless energy receiving surface |
| US20190312531A1 (en) * | 2018-04-04 | 2019-10-10 | Innovasonic, Inc. | Transparent energy harvesting device |
-
2020
- 2020-08-25 CN CN202010863298.4A patent/CN114120869A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05290229A (en) * | 1992-04-06 | 1993-11-05 | Kyodo Printing Co Ltd | Non-contact ic card and its identification system |
| JPH07271938A (en) * | 1994-03-29 | 1995-10-20 | Sony Corp | Information card |
| US6400274B1 (en) * | 1995-08-31 | 2002-06-04 | Intermec Ip Corp. | High-performance mobile power antennas |
| JP2006014104A (en) * | 2004-06-29 | 2006-01-12 | Nippon Dengyo Kosaku Co Ltd | Ring antenna |
| CN101236613A (en) * | 2007-01-30 | 2008-08-06 | 力晶半导体股份有限公司 | Electronic volume label, volume label identification system and method |
| US20100141452A1 (en) * | 2008-12-10 | 2010-06-10 | Sensormatic Electronics Corporation | Method and system for deactivation of combination eas/rfid tags |
| US20110269397A1 (en) * | 2008-12-30 | 2011-11-03 | Telecom Italia S.P.A. | Radio Coverage Extender for a Personal Area Network Node Embedded in a User Communications Terminal |
| CN202422176U (en) * | 2011-08-17 | 2012-09-05 | 上海祯显电子科技有限公司 | Antenna-hidden type electronic label |
| CN203338386U (en) * | 2013-07-10 | 2013-12-11 | 上海理想信息产业（集团）有限公司 | RFID (radio frequency identification devices) screen display tag capable of being wirelessly charged |
| US20160181867A1 (en) * | 2014-12-23 | 2016-06-23 | Palo Alto Research Center Incorporated | Rectifying Circuit For Multiband Radio Frequency (RF) Energy Harvesting |
| US20190140766A1 (en) * | 2016-04-25 | 2019-05-09 | University Of Maryland, College Park | System and method for wireless power transfer using time reversed electromagnetic wave propagation |
| US20190312531A1 (en) * | 2018-04-04 | 2019-10-10 | Innovasonic, Inc. | Transparent energy harvesting device |
| CN110165757A (en) * | 2019-06-03 | 2019-08-23 | 浙江大学 | A kind of transparent wireless energy receiving surface |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3210313B1 (en) | A segmented conductive back cover for wireless power transfer | |
| EP1500167B1 (en) | Energy source communication employing slot antenna | |
| CN108039571A (en) | Center component, antenna module and electronic equipment | |
| CN103427162B (en) | Electronic installation | |
| EP3089373A1 (en) | Flexible and retractable wireless charging device | |
| CN101452521B (en) | Near-field communications system and related display device thereof | |
| CN112448162A (en) | Antenna assembly and electronic equipment | |
| CN114284721A (en) | Antenna device and electronic equipment | |
| CN108900217A (en) | Tuning circuit, radio circuit and electronic equipment | |
| US11854503B2 (en) | Wireless electronic label and system comprising the same | |
| CN218498372U (en) | Electronic device | |
| CN111553451B (en) | Passive ink screen electronic price tag based on energy-carrying communication | |
| US10333334B2 (en) | Wireless power transfer in an electronic device having a tuned metallic body | |
| CN114243271B (en) | Antenna device, circuit board assembly and electronic equipment | |
| CN114120869A (en) | Wireless electronic volume label and system thereof | |
| CN203423688U (en) | Device having functions of near and far field wireless communication and wireless charging | |
| CN203456920U (en) | Card type electronic equipment and electronic system | |
| CN102136054A (en) | Animal electronic tag reading equipment | |
| CN202870872U (en) | Electronic tag | |
| CN202257586U (en) | Radio frequency identification card reading device | |
| CN203423689U (en) | Device integrating functions of near field communication, wireless charging, positioning and emergency aid | |
| CN203299859U (en) | Handheld RFID reader-writer | |
| CN110601317A (en) | One-stop mobile power supply for electronic equipment | |
| CN220755127U (en) | Circuit board, electronic equipment and kettle | |
| CN218827833U (en) | Antenna device and electronic apparatus |
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 |