CN104097584A - Electronic vehicle license plate - Google Patents
Electronic vehicle license plate Download PDFInfo
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- CN104097584A CN104097584A CN201310122335.6A CN201310122335A CN104097584A CN 104097584 A CN104097584 A CN 104097584A CN 201310122335 A CN201310122335 A CN 201310122335A CN 104097584 A CN104097584 A CN 104097584A
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- high molecular
- insulating barrier
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- polymer insulating
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Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention discloses an electronic vehicle license plate, and belongs to the technical field of nanometer. The electronic vehicle license plate comprises a license plate body, air inlet holes, a cavity, a self power supply device and a radio frequency module, wherein the air inlet holes are formed in the license plate body, the cavity is arranged behind the air inlet holes, the self power supply device is positioned in the cavity, the radio frequency module is connected with the self power supply device, the self power supply device is used for converting mechanical energy into electric energy, and supplying power to the radio frequency module, the radio frequency module is used for receiving an electromagnetic signal sent by a card reader, and the information of the license plate body is sent to the card reader according to the electromagnetic signal. The electronic vehicle license plate has the advantage that a nanometer friction generator is used for collecting the energy in the driving process of a vehicle to supply power to the radio frequency module, and active transmission is realized under the condition of no battery for driving, so the wireless transmission within a larger distance and a larger range can be completed by the radio frequency.
Description
Technical field
The present invention relates to field of nanometer technology, relate in particular to a kind of electronic license plate.
Background technology
At present the vehicle management of China all adopts license plate number management, i.e. car one number plate, and first self-propelled vehicle will be registered after buying, and can use after obtaining the legal number plate of vehicle.The car plate of current domestic self-propelled vehicle is still taking physics car plate as main, and car plate has just shown vehicle number of registration.The information of vehicles of including management in comprises: car owner's name, vehicle, car name, Motor Number, source etc., the annual test in use relating to, pay dues, change, shift, mortgage, cancellation and traffic violation punishment etc. is all taking car plate as object.But these information are not recorded on car plate, traffic administration person can not be known the relevant information of vehicle immediately, judges the legitimacy of vehicle, and this has just brought inconvenience to transport administration; Opportunity is provided also to some lawless person simultaneously, has occurred fake-licensed car, counterfeit car, stealthy car plate etc.Law enfrocement official is also difficult to learn in time the specifying information of vehicle at accident site, inconvenience is notified relevant unit and personnel in the very first time.Especially serious, a lot of people usurp military license plate and use, and upset the use order of military license plate, infringement PLA's image.In order to address the above problem, electronic license plate arises at the historic moment.
And electronic license plate technology based on RF identification (Radio Frequency Identification, RFID) is an application that has practicality and theoretical property.An Intelligent electronic license plate is made up of common car plate and electronic license plate.Electronic license plate is actually the electronic tag of a wireless identification, has stored the vehicle data through encryption in electronic license plate, and its data can only be by reading through the RFID card reader of authorizing.
According to the difference of the tag-powered mode of RFID, can be divided into passive, active and half active three kinds of different types.Passive label does not have powered battery, and it is completed by radio-frequency (RF) energy transfer mechanism by read write line completely in order to carry out data communication and to maintain the required energy such as data storage, processing.When active label work, required all energy are supplied with by internal cell completely, the general radio-frequency information that initiatively outwards sends of label, and therefore power consumption is larger in the course of the work.Battery is equipped with in semi-active label inside, label optionally uses the radio-frequency (RF) energy of read write line transmitting or the energy of battery to produce circuit to label inside for data storage, processing and internal signal according to the size of the energy receiving and powers, and the radio-frequency (RF) energy of still being launched by card reader for the energy of data communication in label provides.In the application of RFID electronic license plate, be all to adopt active or half active excitation mode traditionally.Active label adopts initiatively send mode, have great advantage, but in use procedure, power consumption is larger on label reading/writing distance and sensitivity, needs at set intervals to carry out battery altering.Half active mode has done certain improvement in energy-saving mode, approaches with passive but shortcoming is label reading/writing distance, conventionally can only be used for the less demanding occasion of reading/writing distance, and range of use is restricted.
Summary of the invention
Goal of the invention of the present invention is the defect for prior art, proposes a kind of electronic license plate, there is no in battery-driven situation, to carry out active transmitting in order to realize.
According to an aspect of the present invention, the invention provides a kind of electronic license plate, this electronic license plate comprises: car plate body, is arranged on fresh air inlet on car plate body, is arranged on cavity below of this fresh air inlet, is positioned at the self-power supply device of this cavity and the radio-frequency module being connected with this self-power supply device, wherein:
Described self-power supply device for mechanical energy is converted to electric energy, and is described radio-frequency module power supply;
Described radio-frequency module, the electromagnetic signal sending for receiving card reader, sends license board information according to this electromagnetic signal to this card reader.
Alternatively, described radio-frequency module is arranged on the front of described car plate body; Or described radio-frequency module is positioned at described cavity, described cavity is positioned at the back side of described car plate body, and described car plate body is non-metallic material.
Alternatively, described self-power supply device comprises that nano friction electrical generator and corresponding elasticity thereof knocks parts, this nano friction electrical generator is positioned on the sidewall of described cavity, one end that described elasticity is knocked parts is fixed on the bottom of this cavity, and the other end that described elasticity is knocked parts is corresponding with described fresh air inlet position; Or, described self-power supply device comprises that nano friction electrical generator and one end are fixed on the elastomeric element of the sidewall of described cavity, this nano friction electrical generator is vertically positioned at the bottom of described cavity, one surface of this nano friction electrical generator is corresponding with described fresh air inlet, and another surface of this nano friction electrical generator is connected with the other end of described elastomeric element.
Alternatively, described elastomeric element is spring.
Alternatively, described self-power supply device also comprises: connected rectifying circuit module, filter circuit module, transforming circuit module and tank circuit module successively, wherein:
Described rectifying circuit module, is connected with described nano friction electrical generator, for the alternating-current pulse signal of described nano friction electrical generator output is carried out to rectification, and the direct current (DC) of output single-phase pulsation;
Described filter circuit module, after disturbing for the direct current (DC) filtering clutter of the single-phase pulsation to described rectifying circuit module output, output direct current (DC);
Described transforming circuit module, for the direct current (DC) of described filter circuit module output is carried out to transformation, output is applicable to the electric signal that tank circuit module stores;
Described tank circuit module, for storing the electric signal of described transforming circuit module output.
Alternatively, described radio-frequency module comprises: the wireless receiving module, master cock module, CPU control module and the wireless transmitter module that connect successively, wherein:
Described wireless receiving module, for receiving the electromagnetic signal of card reader transmission and being forwarded to described master cock module;
Described master cock module, is connected with described self-power supply device, for making own conducting according to the described electromagnetic signal receiving, so that described self-power supply device is described CPU control module and the power supply of described wireless transmitter module;
Described CPU control module, for extracting license board information according to the electromagnetic signal receiving from this locality, send this license board information to described wireless transmitter module is also described wireless transmitter module power supply simultaneously;
Described wireless transmitter module, for the license board information sending according to the described CPU control module of reception, and sends license board information to corresponding card reader.
Alternatively, described nano friction electrical generator comprises: the first electrode being cascading, the first high molecular polymer insulating barrier, and the second electrode; Wherein, described the first electrode is arranged on the first side surface of described the first high molecular polymer insulating barrier; And the second side surface of described the first high molecular polymer insulating barrier is towards described the second electrode setting.
Alternatively, the second side surface of described the first high molecular polymer insulating barrier is provided with micro-nano structure.
Alternatively, described nano friction electrical generator also comprises: be arranged on the second high molecular polymer insulating barrier between described the second electrode and described the first high molecular polymer insulating barrier, described the second electrode is arranged on the first side surface of described the second high molecular polymer insulating barrier; And the second side surface of the second side surface of described the second high molecular polymer insulating barrier and described the first high molecular polymer insulating barrier is oppositely arranged.
Alternatively, at least one face in two faces that described the first high molecular polymer insulating barrier and the second high molecular polymer insulating barrier are oppositely arranged is provided with micro-nano structure.
Alternatively, described nano friction electrical generator also comprises: be arranged on the thin layer between two parties between described the first high molecular polymer insulating barrier and described the second high molecular polymer insulating barrier, wherein, described thin layer is between two parties polymer film layer, and described the first high molecular polymer insulating barrier relatively described between two parties thin layer face and thin layer between two parties with respect at least one face in the face of the first high molecular polymer insulating barrier and/or described the second high molecular polymer insulating barrier relative described between two parties at least one face in the face of thin layer and the face of relative the second high molecular polymer insulating barrier of thin layer be between two parties provided with micro-nano structure.
Alternatively, described nano friction electrical generator comprises: the first electrode being cascading, the first high molecular polymer insulating barrier, electrode layer between two parties, the second high molecular polymer insulating barrier and the second electrode; Wherein, described the first electrode is arranged on the first side surface of described the first high molecular polymer insulating barrier; Described the second electrode is arranged on the first side surface of described the second high molecular polymer insulating barrier, described electrode layer is between two parties arranged between the second side surface of described the first high molecular polymer insulating barrier and the second side surface of described the second high molecular polymer insulating barrier, and described the first high molecular polymer insulating barrier relatively described between two parties electrode layer face and electrode layer between two parties with respect at least one face in the face of the first high molecular polymer insulating barrier and/or described the second high molecular polymer insulating barrier relative described between two parties at least one face in the face of electrode layer and the face of relative the second high molecular polymer insulating barrier of electrode layer be between two parties provided with micro-nano structure.
The energy that the present invention adopts nano friction electrical generator to collect in vehicle driving process is powered to radio-frequency module, there is no in battery-driven situation, to have realized active transmitting, thereby is making radio frequency can complete transmission over radio more at a distance and in a big way.
Brief description of the drawings
Fig. 1 a is the electronic license plate schematic diagram of one embodiment of the invention;
Fig. 1 b is the electronic license plate schematic diagram of another embodiment of the present invention;
Fig. 2 a is the electronic license plate schematic cross-section of one embodiment of the invention;
Fig. 2 b is the electronic license plate schematic cross-section of another embodiment of the present invention;
Fig. 3 is the structural representation of self-power supply device embodiment of the present invention;
Fig. 4 is the structural representation of radio-frequency module embodiment of the present invention;
Fig. 5 a and Fig. 5 b show respectively perspective view and the cross-sectional view of the first structure of nano friction electrical generator;
Fig. 6 a and Fig. 6 b show respectively perspective view and the cross-sectional view of the second structure of nano friction electrical generator;
Fig. 7 a and Fig. 7 b show respectively perspective view and the cross-sectional view of the third structure of nano friction electrical generator;
Fig. 8 a and Fig. 8 b show respectively perspective view and the cross-sectional view of the 4th kind of structure of nano friction electrical generator.
Detailed description of the invention
For fully understanding object, feature and effect of the present invention, by following concrete embodiment, the present invention is elaborated, but the present invention is not restricted to this.
The invention provides a kind of electronic license plate, as shown in Fig. 1 a and 1b, this electronic license plate comprises: car plate body 11, is arranged on fresh air inlet 12 on car plate body 11, is arranged on cavity (not shown) below of this fresh air inlet 12, is positioned at the self-power supply device (not shown) of this cavity and the radio-frequency module 13 being connected with this self-power supply device, wherein:
Self-power supply device for mechanical energy is converted to electric energy, and is above-mentioned radio-frequency module power supply;
Above-mentioned radio-frequency module 13, the electromagnetic signal sending for receiving card reader, sends license board information according to this electromagnetic signal to this card reader.
Preferably, above-mentioned radio-frequency module 13 can be arranged on the front of above-mentioned car plate body 11, as shown in Figure 1a; Alternatively, for make the more attractive in appearance and radio-frequency module of car plate fix more stablely, firm, above-mentioned radio-frequency module can be fixedly installed the cavity that is arranged in car plate body 11 back sides, as shown in Figure 1 b, but, this kind of method to set up there will be the signal of radio-frequency module transmitting to be stopped the problem of shielding by the car plate body 11 of metal material, car plate body 11 can adopt the non-metallic materials such as plastics for this reason, for example can adopt acrylonitrile-butadiene-styrene copolymerization (ABS) resin, but the invention is not restricted to this.
For the electronic license plate of structure shown in above-mentioned Fig. 1 a and Fig. 1 b, its self-power supply device comprises that nano friction electrical generator 21 and corresponding elasticity thereof knocks parts 22, as shown in Figure 2 a, this nano friction electrical generator 21 is positioned on the sidewall of cavity 23, one end that elasticity is knocked parts 22 is fixed on the bottom of this cavity 23, and the other end that this elasticity is knocked parts 22 is corresponding with above-mentioned fresh air inlet 12 positions.The electronic license plate of said structure can be fixedly installed on vehicle, in the time of running car, air-flow blows elasticity by fresh air inlet 12 and knocks parts 22 and move, and then continues to beat the generating of nano friction electrical generator, further electrical power storage is powered as radio-frequency module 13 being used for.
Alternatively, above-mentioned self-power supply device can comprise that nano friction electrical generator 21 and one end are fixed on the elastomeric element 24 of these cavity 23 sidewalls, this nano friction electrical generator 21 is vertically positioned at the bottom of above-mentioned cavity 23, one surface of this nano friction electrical generator 21 is corresponding with above-mentioned fresh air inlet 12, another surface of this nano friction electrical generator 21 is connected with the other end of this elastomeric element 24, in Fig. 2 b, this elastomeric element is spring.The electronic license plate of said structure can be fixedly installed on vehicle, in the time of running car, air-flow blows nano friction electrical generator 21 by fresh air inlet 12 and moves, and spring can make the sustained vibration of nano friction electrical generator, and then raising generating efficiency, final store electrical energy is to be used for as radio-frequency module power supply.
This self-power supply device adopts air-flow to blow nano friction electrical generator and generates electricity and store utilization, has realized self-powered function, has met and has had the high energy consumption of source radio-frequency module demand, and then realized remote transmission signal.
For the self-power supply device of structure shown in Fig. 2 a and Fig. 2 b, this self-power supply device can also comprise: connected rectifying circuit module 31, filter circuit module 32, transforming circuit module 33 and tank circuit module 34 successively, as shown in Figure 3, wherein: above-mentioned rectifying circuit module 31 is connected with above-mentioned nano friction electrical generator 21, carry out rectification for the alternating-current pulse signal that above-mentioned nano friction electrical generator 21 is exported, the direct current (DC) of output single-phase pulsation; After above-mentioned filter circuit module 32 disturbs for the direct current (DC) filtering clutter of single-phase pulsation that above-mentioned rectifying circuit module 31 is exported, output direct current (DC); Above-mentioned transforming circuit module 33 is carried out transformation for the direct current (DC) that above-mentioned filter circuit module 32 is exported, and output is applicable to the electric signal that tank circuit module 34 stores; Above-mentioned tank circuit module 34 stores for the electric signal that above-mentioned transforming circuit module 33 is exported.Above-mentioned tank circuit module 34 can be selected the energy-storage travelling wave tubes such as lithium cell, Ni-MH battery, super capacitor.
In addition, above-mentioned radio-frequency module 13 can comprise: the wireless receiving module 41, master cock module 42, CPU control module 43 and the wireless transmitter module 44 that connect successively, as shown in Figure 4, wherein: above-mentioned wireless receiving module 41 is for receiving the electromagnetic signal of card reader transmission and being forwarded to above-mentioned master cock module 42; Above-mentioned master cock module 42 is connected with above-mentioned self-power supply device, particularly, master cock module 42 is connected with above-mentioned tank circuit module 34, for making own conducting according to the above-mentioned electromagnetic signal receiving, so that being above-mentioned CPU control module 43 and above-mentioned wireless transmitter module 44, above-mentioned self-power supply device powers; Above-mentioned CPU control module 43, for extracting license board information according to the electromagnetic signal receiving from this locality, sends this license board information and powers for this wireless transmitter module 44 simultaneously to above-mentioned wireless transmitter module 44; The license board information that above-mentioned wireless transmitter module 44 sends for receiving CPU control module 43, and send this license board information to corresponding card reader.
Particularly, when above-mentioned electronic license plate is arranged on automobile, in the time that Vehicle Driving Cycle arrives card reader readable region, the wireless receiving module 41 being arranged in the radio-frequency module 13 on electronic license plate can receive the electromagnetic signal that card reader sends, this electromagnetic signal can drive master cock module 42 to open by wireless receiving module 41, self-power supply device is communicated with CPU control module 43, thereby power for CPU control module 43 and wireless transmitter module 44, and CPU control module 43 can send to card reader by the information of vehicles receiving from CPU control module 43 by control wireless transmitter module 44.
To introduce in detail structure and the principle of work of the nano friction electrical generator in above-mentioned electronic license plate below:
The first structure of nano friction electrical generator is as shown in Fig. 5 a and Fig. 5 b.Fig. 5 a and Fig. 5 b show respectively perspective view and the cross-sectional view of the first structure of nano friction electrical generator.This nano friction electrical generator comprises: the first electrode 51, the first high molecular polymer insulating barriers 52 that are cascading, and the second electrode 53.Particularly, the first electrode 51 is arranged on the first side surface of the first high molecular polymer insulating barrier 52; And the Surface Contact friction of the second side surface of the first high molecular polymer insulating barrier 52 and the second electrode 53 also induces electric charge at the second electrode and the first electrode place.Therefore, the first above-mentioned electrode 51 and the second electrode 53 form two output electrodes of nano friction electrical generator.
In order to improve the generating capacity of nano friction electrical generator, be further provided with micro-nano structure 54 at second side surface (being on the face of relative the second electrode 53) of the first high molecular polymer insulating barrier 52.Therefore, in the time that nano friction electrical generator is squeezed, apparent surface's contact friction better of the first high molecular polymer insulating barrier 52 and the second electrode 53, and induce more electric charge at the first electrode 51 and the second electrode 53 places.Because the second above-mentioned electrode 53 is mainly used in rubbing with the first high molecular polymer insulating barrier 52, therefore, the second electrode 53 also can be referred to as the electrode that rubs.
Above-mentioned micro-nano structure 54 specifically can be taked following two kinds of possible implementations: first kind of way is that this micro-nano structure is micron order or nano level very little concaveconvex structure.This concaveconvex structure can increase friction drag, improves generating efficiency.Above-mentioned concaveconvex structure can directly form in the time of film preparation, also can make the surface of the first high molecular polymer insulating barrier form fitfull concaveconvex structure by the method for polishing.Particularly, this concaveconvex structure can be the concaveconvex structure of semicircle, striated, cubic type, rectangular pyramid or the shape such as cylindrical.The second way is, this micro-nano structure is the poroid structure of nanoscale, now the first high molecular polymer insulating barrier material therefor is preferably Kynoar (PVDF), and its thickness is the preferred 1.0mm of 0.5-1.2mm(), and the face of its relative the second electrode is provided with multiple nano-pores.Wherein, the size of each nano-pore, i.e. width and the degree of depth, can select according to the needs of application, and preferred nano-pore is of a size of: width is that 10-100nm and the degree of depth are 4-50 μ m.The quantity of nano-pore can output current value and magnitude of voltage as required be adjusted, and preferably these nano-pores are that pitch of holes is being uniformly distributed of 2-30 μ m, and preferred average pitch of holes is being uniformly distributed of 9 μ m.
Lower mask body is introduced the principle of work of the nano friction electrical generator shown in Fig. 5 a and Fig. 5 b.In the time that each layer of this nano friction electrical generator is bent downwardly, the second electrode 53 in nano friction electrical generator produces static charge with the surperficial phase mutual friction of the first high molecular polymer insulating barrier 52, the generation of static charge can make the electric capacity between the first electrode 51 and the second electrode 53 change, thereby causes occurring electric potential difference between the first electrode 51 and the second electrode 53.In the time that each layer of this nano friction electrical generator returns to original state, the built-in potential being at this moment formed between the first electrode and the second electrode disappears, and now between Balanced the first electrode and the second electrode, will again produce reverse electric potential difference.By repeatedly rubbing and recovering, just can in external circuit, form periodic ac signal.This ac signal is converted to DC signal after rectifying circuit module, filter circuit module and transforming circuit resume module, and this DC signal is exported to tank circuit module and stored, thereby has realized self-charging.
Find according to contriver's research, metal and high molecular polymer friction, the more volatile de-electromation of metal, therefore adopts metal electrode and high molecular polymer friction can improve energy output.Therefore, correspondingly, in the nano friction electrical generator shown in Fig. 5 a and Fig. 5 b, the second electrode is because needs rub as friction electrode (being metal) and the first high molecular polymer, therefore its material can be selected from metal or alloy, and wherein metal can be Au Ag Pt Pd, aluminium, nickel, copper, titanium, chromium, selenium, iron, manganese, molybdenum, tungsten or vanadium; Alloy can be aluminum alloy, titanium alloy, magnesium alloy, beryllium alloy, copper alloy, zinc alloy, manganese alloy, nickel alloy, lead alloy, tin alloy, cadmium alloy, bismuth alloy, indium alloy, gallium alloy, tungsten alloy, molybdenum alloy, niobium alloy or tantalum alloy.The first electrode rubs owing to not needing, therefore, except can selecting the material of above-mentioned the second electrode of enumerating, other materials that can make electrode also can be applied, that is to say, the first electrode is except being selected from metal or alloy, and wherein metal can be Au Ag Pt Pd, aluminium, nickel, copper, titanium, chromium, selenium, iron, manganese, molybdenum, tungsten or vanadium; Alloy can be outside aluminum alloy, titanium alloy, magnesium alloy, beryllium alloy, copper alloy, zinc alloy, manganese alloy, nickel alloy, lead alloy, tin alloy, cadmium alloy, bismuth alloy, indium alloy, gallium alloy, tungsten alloy, molybdenum alloy, niobium alloy or tantalum alloy, can also be selected from the non-metallic materials such as indium tin oxide, Graphene, nano silver wire film.
The second structure of nano friction electrical generator is as shown in Fig. 6 a and Fig. 6 b.Fig. 6 a and Fig. 6 b show respectively perspective view and the cross-sectional view of the second structure of nano friction electrical generator.This nano friction electrical generator comprises: the first electrode 61, the first high molecular polymer insulating barrier 62, the second high molecular polymer insulating barriers 64 and the second electrodes 63 that are cascading.Particularly, the first electrode 61 is arranged on the first side surface of the first high molecular polymer insulating barrier 62; The second electrode 63 is arranged on the first side surface of the second high molecular polymer insulating barrier 64; Wherein, the second side surface contact friction of the second side surface of the first high molecular polymer insulating barrier 62 and the second high molecular polymer insulating barrier 64 induce electric charge at the first electrode 61 and the second electrode 63 places.Wherein, the first electrode 61 and the second electrode 63 form two output electrodes of nano friction electrical generator.
In order to improve the generating capacity of nano friction electrical generator, at least one face in two faces that the first high molecular polymer insulating barrier 62 and the second high molecular polymer insulating barrier 64 are oppositely arranged is provided with micro-nano structure.In Fig. 6 b, the face of the first high molecular polymer insulating barrier 62 is provided with micro-nano structure 65.Therefore, in the time that nano friction electrical generator is squeezed, apparent surface's contact friction better of the first high molecular polymer insulating barrier 62 and the second high molecular polymer insulating barrier 64, and induce more electric charge at the first electrode 61 and the second electrode 63 places.Above-mentioned micro-nano structure can, with reference to description above, repeat no more herein.
The principle of work of the nano friction electrical generator shown in the principle of work of the nano friction electrical generator shown in Fig. 6 a and Fig. 6 b and Fig. 5 a and Fig. 5 b is similar.Difference is only, in the time of each layer of the nano friction electrical generator shown in Fig. 6 a and Fig. 6 b bending, is to produce static charge by the first high molecular polymer insulating barrier 62 and the surperficial phase mutual friction of the second high molecular polymer insulating barrier 64.Therefore, repeat no more about the principle of work of the nano friction electrical generator shown in Fig. 6 a and Fig. 6 b herein.
Nano friction electrical generator shown in Fig. 6 a and Fig. 6 b mainly produces electric signal by the friction between poly-mer (the first high molecular polymer insulating barrier) and poly-mer (the second high molecular polymer insulating barrier).
In this structure, the first electrode and the second electrode material therefor can be indium tin oxide, Graphene, nano silver wire film, metal or alloy, and wherein metal can be Au Ag Pt Pd, aluminium, nickel, copper, titanium, chromium, selenium, iron, manganese, molybdenum, tungsten or vanadium; Alloy can be aluminum alloy, titanium alloy, magnesium alloy, beryllium alloy, copper alloy, zinc alloy, manganese alloy, nickel alloy, lead alloy, tin alloy, cadmium alloy, bismuth alloy, indium alloy, gallium alloy, tungsten alloy, molybdenum alloy, niobium alloy or tantalum alloy.
In this structure, the material of the first high molecular polymer insulating barrier and the second high molecular polymer insulating barrier can be identical in principle, also can be different.But, if the material of two-layer high molecular polymer insulating barrier is all identical, can cause the quantity of electric charge of triboelectrification very little.Therefore preferably, the first high molecular polymer insulating barrier is different from the material of the second high molecular polymer insulating barrier.
In above-mentioned two kinds of structures, the first high molecular polymer insulating barrier and the second high molecular polymer insulating barrier are selected from respectively Kapton, aniline formaldehyde resin film, polyformaldehyde film, ethyl cellulose film, polyamide film, melamino-formaldehyde film, carbowax succinate film, cellophane, cellulose acetate film, polyethylene glycol adipate film, polydiallyl phthalate film, fiber (regeneration) sponge film, elastic polyurethane body thin film, styrene-acrylonitrile copolymer copolymer film, styrene-butadiene-copolymer film, regenerated fiber film, poly-methyl film, methyl acrylic acid ester film, polyvinyl alcohol film, polyvinyl alcohol film, mylar, polyisobutene film, polyurethane flexible sponge film, pet film, polyvinyl butyral film, formaldehyde phenol film, poly-chloroprene rubber film, butadiene-propylene copolymer film, natural rubber film, polyacrylinitrile film, one in acrylonitrile vinyl chloride film and polyethylene the third diphenol carbonate thin film.
Except above-mentioned two kinds of structures, nano friction electrical generator can also adopt the third structure to realize, as shown in Fig. 7 a and Fig. 7 b.Fig. 7 a and Fig. 7 b show respectively perspective view and the cross-sectional view of the third structure of nano friction electrical generator.As can be seen from the figure, the third structure has increased a thin layer between two parties on the basis of the second structure, that is: the nano friction electrical generator of the third structure comprises the first electrode 71 of being cascading, the first high molecular polymer insulating barrier 72, thin layer 70, the second high molecular polymer insulating barrier 74 and the second electrode 73 between two parties.Particularly, the first electrode 71 is arranged on the first side surface of the first high molecular polymer insulating barrier 72; The second electrode 73 is arranged on the first side surface of the second high molecular polymer insulating barrier 74, and thin layer 70 is arranged between the second side surface of the first high molecular polymer insulating barrier 72 and the second side surface of the second high molecular polymer insulating barrier 74 between two parties.Wherein, at least one face in two faces that described thin layer between two parties 70 and the first high molecular polymer insulating barrier 72 are oppositely arranged is provided with micro-nano structure 75, and/or at least one face in two faces being oppositely arranged of described thin layer between two parties 70 and the second high molecular polymer insulating barrier 74 is provided with micro-nano structure 75, concrete set-up mode about micro-nano structure 75 can, with reference to above describing, repeat no more herein.
The material of the nano friction electrical generator shown in Fig. 7 a and Fig. 7 b can be selected with reference to the material of the nano friction electrical generator of aforesaid the second structure.Wherein, thin layer also can be selected from any one in transparent high polymer polyethylene terephthalate (PET), polydimethyl diloxanes (PDMS), polystyrene (PS), polymethyl methacrylate (PMMA), polycarbonate (PC) and polymeric liquid crystal copolymer (LCP) between two parties.Wherein, the material preferably clear poly-mer polyethylene terephthalate (PET) of described the first high molecular polymer insulating barrier and the second high molecular polymer insulating barrier; Wherein, the preferred polydimethyl diloxanes of the material of described thin layer between two parties (PDMS).Above-mentioned the first high molecular polymer insulating barrier, the second high molecular polymer insulating barrier, the material of thin layer can be identical between two parties, also can be different.But, if the material of three floor height Molecularly Imprinted Polymer insulating barriers is all identical, can cause the quantity of electric charge of triboelectrification very little, therefore,, in order to improve friction effect, the material of thin layer is different from the first high molecular polymer insulating barrier and the second high molecular polymer insulating barrier between two parties, the first high molecular polymer insulating barrier is preferably identical with the material of the second high molecular polymer insulating barrier, like this, can reduce material category, make making of the present invention convenient.
In the implementation shown in Fig. 7 a and Fig. 7 b, thin layer 70 is one layer of polymeric films between two parties, therefore similar with the implementation shown in Fig. 6 a and Fig. 6 b in fact, remain and generate electricity by the friction between poly-mer (thin layer between two parties) and poly-mer (the second high molecular polymer insulating barrier).Wherein, easily preparation and stable performance of thin layer between two parties.
In addition, nano friction electrical generator can also adopt the 4th kind of structure to realize, as shown in Fig. 8 a and Fig. 8 b, comprise: the first electrode 81 being cascading, the first high molecular polymer insulating barrier 82, between two parties electrode layer 80, the second high molecular polymer insulating barriers 84 and the second electrode 83; Wherein, the first electrode 81 is arranged on the first side surface of the first high molecular polymer insulating barrier 82; The second electrode 83 is arranged on the first side surface of the second high molecular polymer insulating barrier 84, and electrode layer 80 is arranged between the second side surface of the first high molecular polymer insulating barrier 82 and the second side surface of the second high molecular polymer insulating barrier 84 between two parties.Wherein, the first high molecular polymer insulating barrier 82 is provided with micro-nano structure (not shown) at least one face in the face of the face of electrode layers 80 and relative the first high molecular polymer insulating barrier 82 of electrode layer 80 between two parties relatively between two parties; And/or second high molecular polymer insulating barrier 84 at least one face in the face of the face of electrode layers 80 and relative the second high molecular polymer insulating barrier 84 of electrode layer 80 between two parties, be provided with micro-nano structure (not shown) relatively between two parties.In this mode, by rubbing between electrode layer 80 and the first high molecular polymer insulating barrier 82 and the second high molecular polymer insulating barrier 84 and produce static charge between two parties, thus will be between two parties produce electric potential difference between electrode layer 80 and the first electrode 81 and the second electrode 83, now, the output electrode that the first electrode 81 and the second electrode 83 series connection are nano friction electrical generator; Electrode layer 80 is another output electrode of nano friction electrical generator between two parties.
In the structure shown in Fig. 8 a and Fig. 8 b, the material of the first high molecular polymer insulating barrier, the second high molecular polymer insulating barrier, the first electrode and the second electrode can be selected with reference to the material of the nano friction electrical generator of aforesaid the second structure.Electrode layer can be selected conducting film, conducting polymer, metallic material between two parties, metallic material comprises simple metal and alloy, simple metal is selected from Au Ag Pt Pd, aluminium, nickel, copper, titanium, chromium, selenium, iron, manganese, molybdenum, tungsten, vanadium etc., and alloy can be selected from light alloy (aluminum alloy, titanium alloy, magnesium alloy, beryllium alloy etc.), heavy non-ferrous alloy (copper alloy, zinc alloy, manganese alloy, nickel alloy etc.), fusible alloy (lead, tin, cadmium, bismuth, indium, gallium and alloy thereof), refractory alloy (tungsten alloy, molybdenum alloy, niobium alloy, tantalum alloy etc.).Preferably 100 μ m-500 μ m, more preferably 200 μ m of the thickness of electrode layer 80 between two parties.
Military license plate is more suitable for adopting above-mentioned electronic license plate, and military information of vehicles is stored in the middle of electronic license plate, makes supervision department can supervise military license plate information, prevents that car owner from using false military license plate to deceive supervision.
The energy that above-mentioned electronic license plate adopts nano friction electrical generator to collect in vehicle driving process is powered to radio-frequency module, there is no in battery-driven situation, to have realized active transmitting; Realize active transmitting with nano friction generator powered, make radio frequency can complete transmission over radio more at a distance and in a big way.In addition, adopt nano friction electrical generator to collect the energy of wasting in vehicle driving process, realized energy-conserving and environment-protective.And electronic license plate of the present invention adopts the mode of self-starting to carry out RF identification, only has when receiving after electromagnetic signal and just can automatically launch, and has avoided preferably the waste of electric energy, has saved electric energy.
Finally; it should be noted that: what enumerate above is only specific embodiments of the invention; certainly those skilled in the art can change and modification the present invention; if these amendments and modification all should be thought protection scope of the present invention within belonging to the scope of the claims in the present invention and equivalent technologies thereof.
Claims (12)
1. an electronic license plate, it is characterized in that, this electronic license plate comprises: car plate body, is arranged on fresh air inlet on car plate body, is arranged on cavity below of this fresh air inlet, is positioned at the self-power supply device of this cavity and the radio-frequency module being connected with this self-power supply device, wherein:
Described self-power supply device for mechanical energy is converted to electric energy, and is described radio-frequency module power supply;
Described radio-frequency module, the electromagnetic signal sending for receiving card reader, sends license board information according to this electromagnetic signal to this card reader.
2. electronic license plate according to claim 1, is characterized in that, described radio-frequency module is arranged on the front of described car plate body; Or described radio-frequency module is positioned at described cavity, described cavity is positioned at the back side of described car plate body, and described car plate body is non-metallic material.
3. electronic license plate according to claim 2, is characterized in that:
Described self-power supply device comprises that nano friction electrical generator and corresponding elasticity thereof knocks parts, this nano friction electrical generator is positioned on the sidewall of described cavity, one end that described elasticity is knocked parts is fixed on the bottom of this cavity, and the other end that described elasticity is knocked parts is corresponding with described fresh air inlet position; Or
Described self-power supply device comprises that nano friction electrical generator and one end are fixed on the elastomeric element of the sidewall of described cavity, this nano friction electrical generator is vertically positioned at the bottom of described cavity, one surface of this nano friction electrical generator is corresponding with described fresh air inlet, and another surface of this nano friction electrical generator is connected with the other end of described elastomeric element.
4. electronic license plate according to claim 3, is characterized in that, described elastomeric element is spring.
5. electronic license plate according to claim 3, is characterized in that, described self-power supply device also comprises: connected rectifying circuit module, filter circuit module, transforming circuit module and tank circuit module successively, wherein:
Described rectifying circuit module, is connected with described nano friction electrical generator, for the alternating-current pulse signal of described nano friction electrical generator output is carried out to rectification, and the direct current (DC) of output single-phase pulsation;
Described filter circuit module, after disturbing for the direct current (DC) filtering clutter of the single-phase pulsation to described rectifying circuit module output, output direct current (DC);
Described transforming circuit module, for the direct current (DC) of described filter circuit module output is carried out to transformation, output is applicable to the electric signal that tank circuit module stores;
Described tank circuit module, for storing the electric signal of described transforming circuit module output.
6. electronic license plate according to claim 5, is characterized in that, described radio-frequency module comprises: the wireless receiving module, master cock module, CPU control module and the wireless transmitter module that connect successively, wherein:
Described wireless receiving module, for receiving the electromagnetic signal of card reader transmission and being forwarded to described master cock module;
Described master cock module, is connected with described self-power supply device, for making own conducting according to the described electromagnetic signal receiving, so that described self-power supply device is described CPU control module and the power supply of described wireless transmitter module;
Described CPU control module, for extracting license board information according to the electromagnetic signal receiving from this locality, send this license board information to described wireless transmitter module is also described wireless transmitter module power supply simultaneously;
Described wireless transmitter module, for the license board information sending according to the described CPU control module of reception, and sends license board information to corresponding card reader.
7. according to the electronic license plate described in the arbitrary claim of claim 3-6, it is characterized in that, described nano friction electrical generator comprises: the first electrode being cascading, the first high molecular polymer insulating barrier, and the second electrode; Wherein, described the first electrode is arranged on the first side surface of described the first high molecular polymer insulating barrier; And the second side surface of described the first high molecular polymer insulating barrier is towards described the second electrode setting.
8. electronic license plate according to claim 7, is characterized in that, the second side surface of described the first high molecular polymer insulating barrier is provided with micro-nano structure.
9. electronic license plate according to claim 7, it is characterized in that, described nano friction electrical generator also comprises: be arranged on the second high molecular polymer insulating barrier between described the second electrode and described the first high molecular polymer insulating barrier, described the second electrode is arranged on the first side surface of described the second high molecular polymer insulating barrier; And the second side surface of the second side surface of described the second high molecular polymer insulating barrier and described the first high molecular polymer insulating barrier is oppositely arranged.
10. electronic license plate according to claim 9, is characterized in that, at least one face in two faces that described the first high molecular polymer insulating barrier and the second high molecular polymer insulating barrier are oppositely arranged is provided with micro-nano structure.
11. electronic license plates according to claim 9, it is characterized in that, described nano friction electrical generator also comprises: be arranged on the thin layer between two parties between described the first high molecular polymer insulating barrier and described the second high molecular polymer insulating barrier, wherein, described thin layer is between two parties polymer film layer, and described the first high molecular polymer insulating barrier relatively described between two parties thin layer face and thin layer between two parties with respect at least one face in the face of the first high molecular polymer insulating barrier and/or described the second high molecular polymer insulating barrier relative described between two parties at least one face in the face of thin layer and the face of relative the second high molecular polymer insulating barrier of thin layer be between two parties provided with micro-nano structure.
12. according to the electronic license plate described in claim 3-6 any one, it is characterized in that, described nano friction electrical generator comprises: the first electrode being cascading, the first high molecular polymer insulating barrier, electrode layer between two parties, the second high molecular polymer insulating barrier and the second electrode; Wherein, described the first electrode is arranged on the first side surface of described the first high molecular polymer insulating barrier; Described the second electrode is arranged on the first side surface of described the second high molecular polymer insulating barrier, described electrode layer is between two parties arranged between the second side surface of described the first high molecular polymer insulating barrier and the second side surface of described the second high molecular polymer insulating barrier, and described the first high molecular polymer insulating barrier relatively described between two parties electrode layer face and electrode layer between two parties with respect at least one face in the face of the first high molecular polymer insulating barrier and/or described the second high molecular polymer insulating barrier relative described between two parties at least one face in the face of electrode layer and the face of relative the second high molecular polymer insulating barrier of electrode layer be between two parties provided with micro-nano structure.
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| CN201310122335.6A CN104097584B (en) | 2013-04-10 | 2013-04-10 | Electronic license plate |
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| CN201310122335.6A CN104097584B (en) | 2013-04-10 | 2013-04-10 | Electronic license plate |
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| CN104097584B CN104097584B (en) | 2016-06-08 |
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