CN103872799B - Utilization space electromagnetic coupled carries out the device of non-contact power for electronic display tag - Google Patents
Utilization space electromagnetic coupled carries out the device of non-contact power for electronic display tag Download PDFInfo
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- CN103872799B CN103872799B CN201410122583.5A CN201410122583A CN103872799B CN 103872799 B CN103872799 B CN 103872799B CN 201410122583 A CN201410122583 A CN 201410122583A CN 103872799 B CN103872799 B CN 103872799B
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Abstract
The invention discloses a kind of utilization space electromagnetic coupled carries out the device of non-contact power for electronic display tag, including high-frequency coupling power coil, high frequency power signals generator and electronic display tag are by electric module, the high-frequency coupling power coil is arranged at electronic display tag by around electric module, and be connected with high frequency power signals generator, high frequency power signals generator produces high frequency ac signal, alternating magnetic field is produced when the high frequency ac signal is by the high-frequency coupling power coil, the electronic display tag is sensed the alternating magnetic field by electric module, electric energy is obtained by vibrating tuning, power for electronic display tag.The present invention solves electronic display tag in actual applications to the demand powered, and realizes electronic display tag and is stablized by way of noncontact coupling, sufficient, reliable power supply supply.
Description
Technical field
The present invention relates to electronic display tag electric supply installation, more particularly to a kind of utilization space electromagnetic coupled is electronical display
Label carries out the device of non-contact power.
Background technology
At present in storage, material, in the industry such as retail, using possessing novel electron ink, the electricity of TFT LCD Panels
Sub- display label is progressively substituting traditionally on paper label.As electronic display tag has renewal speed fast, the efficiency of management is high,
Error rate is low, the low advantage of operating cost, becomes following storage, material, the first-selection of the presentation of information in retail trade field.
But in storage, logistics, retail trade field, during with electronic display tag, how label obtains for a long time, fills
Foot, reliable electric energy supply become a difficult problem.Traditional battery power supply mode receive battery capacity, size, the life-span, environment, more
Change many restrictions such as this into.
Due to electronic display tag small volume, slim body, it is typically only capable to power using micro button cell in prior art.
Micro button cell can only at most provide the power supply of hundreds of Milliampere Hours, and battery meets the label work requirements of 1～2 year.Once
The battery-depletion of electronic display tag, it is necessary to manually changed and can just be worked on.Battery is powered and be not only limit
The Function of label, and change battery and need to spend a large amount of artificial, material and time, serious restriction electronic display tag is pushed away
It is wide to apply.
For electronic display tag provide it is long-term, stable, reliable power demands become a crucial technological difficulties.
This patent is to supply to solve the power supply in supermarket's electronic tag life-time service using high-frequency coupling power supply mode,
And a kind of contactless power delivery that specially designs and conversion regime.Using guide rail wireless coupling power supply mode so that electricity
Sub- shelf label is completely free of the dependence to button cell, it is ensured that electronic display tag can be not required to unconfined longtime running
To be limited by powering quantity again.
The content of the invention
The technical problem to be solved in the present invention is to need to use battery for electronic shelf label in prior art, it is impossible to
The defect of longtime running, there is provided a kind of utilization space electromagnetic coupled not limited by battery electric quantity carries out non-for electronic display tag
The device of contact power supply.
The technical solution adopted for the present invention to solve the technical problems is：
The device that a kind of utilization space electromagnetic coupled carries out non-contact power for electronic display tag is provided, the device includes
High-frequency coupling power coil, high frequency power signals generator and electronic display tag are by electric module；The high-frequency coupling power coil
It is arranged at electronic display tag to receive around electric module, and is connected with high frequency power signals generator, high frequency power signals occurs
Device produces high frequency ac signal, produces alternating magnetic field when the high frequency ac signal is by the high-frequency coupling power coil, described
Electronic display tag is sensed the alternating magnetic field by electric module, is obtained electric energy by vibrating tuning, is that electronic display tag is powered.
In device of the present invention, installation guide rail around the electronic display tag, is provided with, the high-frequency coupling is supplied
Electric coil is placed in the attachment rail, and the electronic display tag has totally enclosed shell, and the electronic display tag is by electricity
Module is placed in the inside the shell.
In device of the present invention, the electronic display tag is included by electric induction coil by electric module, should be by inductance
Answer coil connection bridge commutating, the bridge commutating will be changed into DC voltage, and Jing by alternating voltage is produced in electric induction coil
Electron display label is exported after filter capacitor filtering.
In device of the present invention, the high-frequency coupling power coil be 10～100 millimeters of spacing, 5 meters of greatest length
Rectangular-shaped loops.
In device of the present invention, the high frequency power signals generator include power supply, resonant mode RF power amplifier,
Tuning and impedance matching network, ESD/EMI protection and sampling and feedback regulating circuit.
In device of the present invention, the power supply is 12～24 volts of low-voltage dc power supply.
The beneficial effect comprise that：The present invention is by HF signal generator, Alternating Current Power Supply coil, around guide rail
Modular design, solve electronic display tag in actual applications to power demand, realize electronic display tag and pass through
The mode of noncontact coupling is stablized, sufficient, reliable power supply supply；The invention enables electronic display tag can break away from right
Battery need not be installed and be changed to the dependence of battery, electronic display tag within the whole service life cycle, significantly reduce electricity
The use cost of sub- display label；Present invention achieves electronic display tag is powered by noncontact coupled modes, electronical display
Label can make totally-enclosed design, improve adaptability of the electronic display tag to applied environment, improve making for label
With the life-span, maintenance cost is reduced.
Description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the device that embodiment of the present invention utilization space electromagnetic coupled carries out non-contact power for electronic display tag
Structural representation one；
Fig. 2 is the device that the utilization space electromagnetic coupled of the embodiment of the present invention carries out non-contact power for electronic display tag
Schematic diagram two；
Fig. 3 is the schematic diagram that the embodiment of the present invention produces alternating magnetic field in rectangular-shaped loops；
Fig. 4 is the structural representation of embodiment of the present invention HF signal generator；
Fig. 5 is structural representation of the embodiment of the present invention electronic display tag by electric module.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, it is below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
As shown in figure 1, embodiment of the present invention utilization space electromagnetic coupled carries out non-contact power for electronic display tag
Device includes high-frequency coupling power coil 20, high frequency power signals generator 10 and electronic display tag by electric module 30, the height
Frequency coupling power coil 20 is arranged at electronic display tag and receives around electric module 30, and connects with high frequency power signals generator
Connect, high frequency power signals generator 10 produces high frequency ac signal, and the high frequency ac signal is by the high-frequency coupling supply lines
Alternating magnetic field is produced during circle, and the electronic display tag is sensed the alternating magnetic field by electric module 30, electricity is obtained by vibrating tuning
Can, it is that electronic display tag 40 is powered.
As shown in Fig. 2 in one embodiment of the present of invention, installation guide rail around the electronic display tag 40, is provided with,
The attachment rail is around track.The high-frequency coupling power coil 20 is placed in the installation guide rail, the electronic display tag
By electric module 30（Not shown in Fig. 2）It is placed in inside the electronic display tag 40.
In one preferred embodiment of the present invention, a 10～100mm of spacing is constituted using high frequency cable（Depending on electronic display
Depending on the overall dimensions of indicating label need）, the rectangular-shaped loops of greatest length 5m（That is high-frequency coupling power coil 20）, as power supply
The coupling of side, as shown in Figure 3.
To the coupling circuit of supply side（That is rectangular-shaped loops）Injection high-frequency ac current, then form in the top of coupling circuit
Magnetic field structure as shown in Figure 3, the magnetic field can be shaken with high frequency electric at a high speed.
Now, by this high-frequency coupling power coil 20 embedded attachment rail for placing shelf label, it is possible to utilize coil
Internal alternating magnetic field is powered for electronic display tag.Rectangular-shaped loops length can not be oversize, with the wavelength of high frequency electric as reference,
Once significantly more than 1/10th wavelength, then the standing wave effect that electric current is transmitted is displayed, and can cause the electronical display of each position
Label can be obtained powering difference substantially, and part electronic display tag effectively cannot be powered.According to current calculating, square
Preferably within 5m, in reality, this can also meet the actual demand of most shelf to shape loop length, for super long type
Shelf, are segmented into multiple paragraphs, are separately provided high-frequency coupling power coil 20 per paragraph.
Consider the condition of onsite application, be that the power supply of the power supply of high-frequency coupling power coil 20 is preferably safety power supply, it is to avoid
Potential potential safety hazard, therefore consideration direct current 24V or 36V power.Need to develop line of the high frequency electric source for driving track
Circle, the power supply obtain power supply from 24V or 36V, are converted in high frequency electric injection high-frequency coupling power coil 20.Because rectangle
Loop length and the number of labels for being driven are indefinite, therefore the power supply must be constant current output, or possess automatic tuning capabilities,
The power of injection can be automatically set according to the quantity of attachment rail length and driven label, it is to avoid meaningless power disappears
Consumption.
In the embodiment of the present invention, high frequency power signals source generator adopts resonant mode operation principle, as shown in figure 4, described
High frequency power signals generator 10 includes that power supply, resonant mode RF power amplifier, tuning and impedance matching network, ESD/EMI are anti-
Shield and sampling and feedback regulating circuit.
The nucleus equipment of supply side is high frequency power signals generator, the high frequency electric injection that HF signal generator is produced
High-frequency coupling power coil 20, high-frequency coupling power coil 20 produce high-frequency alternating magnetic field.Due to the length around guide rail and holding
The number of labels of load is variable, therefore high frequency power signals generator must possess automatic tuning capability, can be according to high frequency
The impedance of coupling power coil 20 and the high frequency electric of the quantity automatic dynamic adjustment injection of electronic display tag, to avoid producing
Coil tuning deviation, reduces power attenuation, improves power supplying efficiency.
In view of the security requirement at labeling task scene, HF signal generator input power is 12-24V unidirectional currents
Source, within the scope of safe voltage, it can be ensured that non-contact electric personal safety risk.
The HF signal generator of the embodiment of the present invention adopt electrostatic defending ESD, electromagnetic compatible protective EMI design, due to
High-frequency coupling power coil 20 is an open coupled antenna, is also easily outwardly radiated while high-frequency energy is transmitted
High frequency is harassed（May interfere with communications band）, the interference such as outside static discharge, electronic striking is also easily subject to, to avoid inside
Component wear or dysfunction, it is therefore desirable to adopt safeguard procedures, it is ensured that operational reliability and safety.
Show that HF signal generator produces the high frequency electric of frequency 360KHz according to actual test test, around guide rail
50mm spacing, during supply side maximal input 16W, can drive the circular guide rail of 5m length, at most can be with every meter of guide rail
There are 15 labels, on guide rail, there can be altogether 50 labels, each label can obtain 3V, 30 milliamperes of stabilized power supply.
As shown in figure 5, the electronic display tag is included by electric induction coil by electric module, should be connected by electric induction coil
Bridge commutating, the bridge commutating will be changed into DC voltage, and the filter of filtered electric capacity by alternating voltage is produced in electric induction coil
Electron display label is exported after ripple.
To obtain enough output powers, the electric current, frequency in high-frequency coupling power coil 20, by the line of electric induction coil
Circle area, the number of turn, resonant frequency, impedance matching must all reach the state of relatively optimization.
20 electric current of high-frequency coupling power coil is bigger in principle, and frequency is higher, bigger by electric induction area coil and the number of turn,
Can be obtained output power higher.But actually consider 20 frequency of high-frequency coupling power coil restriction and tuning,
The feasibility matched somebody with somebody, and be restricted by electric induction coil turn, the power of acquisition also has certain limit, is computed, compares
Actual power is in the range of 50-200mW.
Root as roughly estimated, the electric current 1A of high-frequency coupling power coil 20, by electric induction area coil about in 5cm2,
In the state of resonance is good, it is possible to obtain the power supply of 3.3V/30mA.
As shown in Fig. 2 electronic display tag is arranged on the shelf of strip on guide rail, by embedding around guide rail
The high-frequency coupling power coil for entering, injects high frequency electric to high-frequency coupling power coil, is formed in high-frequency coupling power coil
Magnetic field as shown in Figure 3, is coupled the alternating magnetic field produced in power coil, and produces exchange by electric induction coil induction of high frequency
Electricity, it is converted after be changed into unidirectional current, it is possible to power for electronic display tag.
In present pre-ferred embodiments, electronic display tag is installed on fixed circular guide rail, but between the two
Contact without any metal and circuit turn-on, but the transmission of electric energy is realized by the sensing of external electromagnetic field, so greatly carry
The high installation effectiveness of electronic display tag, it is ensured that the reliability of power supply.
The pre-plugged high frequency coil in around guide rail, is then noted into high frequency coil by high frequency power signals generator
Enter high frequency electric, so as in electronic display tag and the alternating electromagnetic field that localized high energy is produced around guide rail contact position.Electricity
Sub- display label solves the powerup issue of electronic display tag by way of non-contacting couple electromagnetic energy, realizes electricity
Sub- display label need not change battery all the life, greatly improve the work efficiency and efficiency of electronic display tag.
Due to realizing non-contacting power supply mode, electronic display tag is without the concern for replacing battery, it is not required that outward
Outlet is connect, therefore electronic display tag can make totally enclosed shell, the outer of the closing is arranged on by electric induction coil
In shell, under the environment such as high temperature, high humidity, corrosivity, such design is with obviously advantage.
It should be appreciated that for those of ordinary skills, can be improved according to the above description or be converted,
And all these modifications and variations should all belong to the protection domain of claims of the present invention.
Claims (1)
1. a kind of utilization space electromagnetic coupled carries out the device of non-contact power for electronic display tag, and the device includes high frequency coupling
Power coil, high frequency power signals generator and multiple electronic display tags are closed by electric module；The high-frequency coupling power coil sets
It is placed in multiple electronic display tags to receive around electric module, and is connected with high frequency power signals generator, high frequency power signals is sent out
Raw device produces high frequency ac signal, produces alternating magnetic field, institute when the high frequency ac signal is by the high-frequency coupling power coil
State electronic display tag and the alternating magnetic field is sensed by electric module, obtain electric energy by vibrating tuning, be that electronic display tag is powered；
Installation guide rail is provided with around the electronic display tag, the installation guide rail surround guide rail for the shelf of strip, described
High-frequency coupling power coil is placed in the installation guide rail；The electronic display tag has totally enclosed shell, the electronic display
Indicating label are placed in the inside the shell by electric module；
The electronic display tag is included by electric induction coil by electric module, is somebody's turn to do and is connected bridge commutating, the electricity by electric induction coil
Bridge rectification will export electron after being changed into DC voltage, and filtered capacitor filtering by alternating voltage is produced in electric induction coil
Display label；
The high-frequency coupling power coil be 10 ~ 100 millimeters of spacing, the rectangular-shaped loops that 5 meters of greatest length；The high frequency power letter
Number generator includes power supply, resonant mode RF power amplifier, tuning and impedance matching network, ESD/EMI protection and samples and anti-
Feedback adjusts circuit；The power supply is 12 ~ 24 volts of low-voltage dc power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410122583.5A CN103872799B (en) | 2014-03-28 | 2014-03-28 | Utilization space electromagnetic coupled carries out the device of non-contact power for electronic display tag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410122583.5A CN103872799B (en) | 2014-03-28 | 2014-03-28 | Utilization space electromagnetic coupled carries out the device of non-contact power for electronic display tag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103872799A CN103872799A (en) | 2014-06-18 |
| CN103872799B true CN103872799B (en) | 2017-04-05 |
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| CN201410122583.5A Active CN103872799B (en) | 2014-03-28 | 2014-03-28 | Utilization space electromagnetic coupled carries out the device of non-contact power for electronic display tag |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FI128341B (en) * | 2015-01-19 | 2020-03-31 | Marisense Oy | Electronic price label and a battery unit for an electronic price label |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100588025C (en) * | 2008-01-23 | 2010-02-03 | 高甫仁 | Electromagnetic induction energy-storage system |
| JP2013070520A (en) * | 2011-09-22 | 2013-04-18 | Panasonic Corp | Driving method of non contact power supply device, non contact power supply device, and non contact power supply system |
| CN103337018A (en) * | 2013-07-19 | 2013-10-02 | 天津索夫特维科技有限公司 | Logistics management system based on RFID (radio frequency identification device) electronic tags |
| CN203761148U (en) * | 2014-03-28 | 2014-08-06 | 武汉工程大学 | Device for supplying power to electronic display tag in contactless manner by aid of space electromagnetic coupling |
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Effective date of registration: 20180518 Address after: 100025 Beijing Chaoyang North Road 129 hospital 3 Building 10 floor 1105 Patentee after: Dengying Technology Co.,Ltd. Address before: 100102 28 floor 3206, 5 building, 6 Tung Fu Street East, Chaoyang District, Beijing. Patentee before: Benchmarking Technology (Beijing) Co.,Ltd. Effective date of registration: 20180518 Address after: 100102 28 floor 3206, 5 building, 6 Tung Fu Street East, Chaoyang District, Beijing. Patentee after: Benchmarking Technology (Beijing) Co.,Ltd. Address before: 430074 No. 693, Xiong Chu street, Hongshan District, Wuhan, Hubei. Patentee before: Wuhan Institute of Technology |
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