CN104097584B - Electronic license plate - Google Patents
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- CN104097584B CN104097584B CN201310122335.6A CN201310122335A CN104097584B CN 104097584 B CN104097584 B CN 104097584B CN 201310122335 A CN201310122335 A CN 201310122335A CN 104097584 B CN104097584 B CN 104097584B
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Abstract
The present invention discloses a kind of electronic license plate, belongs to field of nanometer technology. This electronic license plate comprises: car plate body, the intake opening being arranged on car plate body, the cavity below that is arranged on this intake opening, the self-power supply device being positioned at 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 it it is described radio frequency module for power supply; Described radio frequency module, for receiving the electromagnetism signal that card reader sends, sends license board information according to this electromagnetism signal to this card reader. The electronic license plate of the present invention adopts nano friction generator to collect the energy in vehicle driving process to radio frequency module for power supply, is not having to achieve in battery-driven situation active transmitting, is enabling radio frequency complete transmission over radio more at a distance and in a big way.
Description
Technical field
The present invention relates to field of nanometer technology, particularly relate to a kind of electronic license plate.
Background technology
The vehicle management of current China all adopts license plate number to manage, i.e. car one number plate, and first motor vehicle to be registered after buying, and can use after obtaining the legal number plate of vehicle. The car plate of current domestic motor vehicle is still based on physics car plate, and car plate show only vehicle number of registration. The information of vehicles including management in comprises: car owner's name, vehicle, car name, Motor Number, source etc., the annual test in use related to, pays dues, changes, shifts, mortgages, nullifies and traffic penalty for violation of regulation etc. is all object taking car plate. But these information are not recorded on car plate, traffic administration person can not know the relevant information of vehicle immediately, judges the legitimacy of vehicle, and this just brings inconvenience to traffic administration; Provide opportunity also to some lawless person simultaneously, fake-licensed car, counterfeit car, stealthy car plate etc. have occurred. Law enfrocement official is also difficult to learn in time the specifying information of vehicle at traffic accident scene, and inconvenience notifies relevant unit and personnel in the very first time. Especially seriously, a lot of people usurps military car plate and uses, and upsets the use order of military car plate, the image of infringement people liberation army. In order to solve the problem, electronic license plate arises at the historic moment.
And be the application of a high practicability and theoretical property based on the electronic license plate technology of RF identification (RadioFrequencyIdentification, RFID). A smart electronics car plate is made up of common car plate and electronic license plate. In fact electronic license plate is the electronic tag of a wireless identification, stores the vehicle data through encrypt treatment in electronic license plate, and its data can only be read by the RFID card reader through authorizing.
Difference according to RFID label tag power supply mode, it is possible to be divided into passive, active and half active three kinds of different types. Passive label does not have powered battery, and it is in order to carry out data communication and to maintain the energy needed for data storage, process etc. being completed by radio-frequency (RF) energy transfer mechanism by read write line completely. When active label works, required all energy are supplied by internal cell completely, and label is general initiatively outwards sends radio-frequency information, and therefore in working process, power consumption is bigger. Battery is equipped with in semi-active label inside, according to the size of the energy received, label optionally uses that label inside is stored by the energy of radio-frequency (RF) energy that read write line launches or battery for data, process and inner signal generating circuit are powered, and the radio-frequency (RF) energy still launched by card reader for the energy of data communication in label provides. In RFID electronic license plate is applied, it is all adopt active or half active excitation mode traditionally. Active label adopts and initiatively sends mode, has great advantage on label reading/writing distance and sensitivity, but in use procedure, power consumption is relatively big, needs at set intervals to carry out battery altering. Half active mode has done certain improvement in energy-saving mode, but shortcoming is label reading/writing distance follows passive close, usually can only be used for the less demanding occasion of reading/writing distance, it may also be useful to scope is restricted.
Summary of the invention
The goal of the invention of the present invention is the defect for prior art, it is proposed to a kind of electronic license plate, in order to realize not having to carry out in battery-driven situation active transmitting.
According to an aspect of the present invention, the present invention provides a kind of electronic license plate, this electronic license plate comprises: car plate body, the intake opening being arranged on car plate body, the cavity below that is arranged on this intake opening, the self-power supply device being positioned at 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 for power supply;
Described radio frequency module, for receiving the electromagnetism signal that card reader sends, sends license board information according to this electromagnetism signal to this card reader.
Can selection of land, described radio frequency module installation is in the front of described car plate body; Or, described radio frequency module is positioned at described cavity, and described cavity is positioned at the back side of described car plate body, and described car plate body is non-metallic material.
Can selection of land, the elasticity that described self-power supply device comprises nano friction generator and correspondence thereof knocks parts, this nano friction generator is positioned on the sidewall of described cavity, one end that described elasticity knocks parts is fixed on the bottom of this cavity, and the other end that described elasticity knocks parts is corresponding with described intake opening position; Or, described self-power supply device comprises nano friction generator and one end is fixed on the elasticity parts of sidewall of described cavity, this nano friction generator is vertically positioned at the bottom of described cavity, one surface of this nano friction generator is corresponding with described intake opening, and another surface of this nano friction generator is connected with the other end of described elasticity parts.
Can selection of land, described elasticity parts are spring.
Can selection of land, described self-power supply device also comprises: the rectifying circuit module that is connected successively, filter circuit module, transforming circuit module and tank circuit module, wherein:
Described rectifying circuit module, is connected with described nano friction generator, carries out rectification for the pulse signal described nano friction generator exported, the direct current of output single-phase pulsation;
Described filter circuit module, after being disturbed by the direct current filtering clutter of the single-phase pulsation that described rectifying circuit module exports, exports direct current;
Described transforming circuit module, carries out transformation for the direct current exported by described filter circuit module, exports the electrical signal being applicable to tank circuit module and storing;
Described tank circuit module, for storing the electrical signal that described transforming circuit module exports.
Can selection of land, described radio frequency module comprises: wireless receiving module, trip switch module, CPU control module and the wireless transmitter module connected successively, wherein:
Described wireless receiving module, for receiving the electromagnetism signal of card reader transmission and be forwarded to described trip switch module;
Described trip switch module, is connected with described self-power supply device, for making oneself conducting according to the described electromagnetism signal received, powers so that described self-power supply device is described CPU control module and described wireless transmitter module;
Described CPU control module, for extracting license board information according to the electromagnetism signal received from this locality, sends this license board information to described wireless transmitter module and powers for described wireless transmitter module simultaneously;
Described wireless transmitter module, for the license board information sent according to the described CPU control module of reception, and sends license board information to the card reader of correspondence.
Can selection of land, described nano friction generator comprises: the first electrode being cascading, the first high molecular polymer insulation layer, and the 2nd electrode; Wherein, the first side that described first electrode is arranged on described first high molecular polymer insulation layer is on the surface; And the 2nd surface, side of described first high molecular polymer insulation layer is arranged towards described 2nd electrode.
Can selection of land, the 2nd side of described first high molecular polymer insulation layer is provided with micro-nano structure on the surface.
Can selection of land, described nano friction generator also comprises: the 2nd high molecular polymer insulation layer being arranged between described 2nd electrode and described first high molecular polymer insulation layer, and the first side that described 2nd electrode is arranged on described 2nd high molecular polymer insulation layer is on the surface; And the 2nd surface, side of the 2nd surface, side of described 2nd high molecular polymer insulation layer and described first high molecular polymer insulation layer is oppositely arranged.
Can selection of land, at least one face in two faces that described first high molecular polymer insulation layer and the 2nd high molecular polymer insulation layer are oppositely arranged is provided with micro-nano structure.
Can selection of land, described nano friction generator also comprises: the thin film layer between two parties being arranged between described first high molecular polymer insulation layer and described 2nd high molecular polymer insulation layer, wherein, described thin film layer between two parties is polymer film layer, and described first high molecular polymer insulation layer relatively described between two parties thin film layer face and thin film layer between two parties relative at least one face in the face of the first high molecular polymer insulation layer and/or described 2nd high molecular polymer insulation layer relative described in the face two high molecular polymer insulation layer relative to thin film layer between two parties of thin film layer between two parties face at least one face be provided with micro-nano structure.
Can selection of land, described nano friction generator comprises: the first electrode being cascading, the first high molecular polymer insulation layer, between two parties electrode layer, the 2nd high molecular polymer insulation layer and the 2nd electrode; Wherein, the first side that described first electrode is arranged on described first high molecular polymer insulation layer is on the surface; The first side that described 2nd electrode is arranged on described 2nd high molecular polymer insulation layer is on the surface, described electrode layer between two parties is arranged between the 2nd surface, side of described first high molecular polymer insulation layer and the 2nd surface, side of described 2nd high molecular polymer insulation layer, and described first high molecular polymer insulation layer relatively described between two parties electrode layer face and electrode layer between two parties relative at least one face in the face of the first high molecular polymer insulation layer and/or described 2nd high molecular polymer insulation layer relative described in the face two high molecular polymer insulation layer relative to electrode layer between two parties of electrode layer between two parties face at least one face be provided with micro-nano structure.
The present invention adopts nano friction generator to collect the energy in vehicle driving process to radio frequency module for power supply, is not having to achieve in battery-driven situation active transmitting, thus is enabling radio frequency complete transmission over radio more at a distance and in a big way.
Accompanying drawing explanation
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 embodiments of the present invention;
Fig. 5 a and Fig. 5 b respectively illustrates perspective view and the cross-sectional view of the first structure of nano friction generator;
Fig. 6 a and Fig. 6 b respectively illustrates perspective view and the cross-sectional view of the 2nd kind of structure of nano friction generator;
Fig. 7 a and Fig. 7 b respectively illustrates perspective view and the cross-sectional view of the third structure of nano friction generator;
Fig. 8 a and Fig. 8 b respectively illustrates perspective view and the cross-sectional view of the 4th kind of structure of nano friction generator.
Embodiment
For fully understanding the object of the present invention, feature and effect, by following enforcement mode specifically, the present invention is elaborated, but the present invention is not restricted to this.
The present invention provides a kind of electronic license plate, as seen in figure la and lb, this electronic license plate comprises: car plate body 11, the intake opening 12 being arranged on car plate body 11, the cavity (not shown) below that is arranged on this intake opening 12, the self-power supply device (not shown) being positioned at 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 for power supply;
Above-mentioned radio frequency module 13, for receiving the electromagnetism signal that card reader sends, sends license board information according to this electromagnetism 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; Can selection of land, in order to make that car plate is more attractive in appearance and radio frequency module is fixed more stable, firm, above-mentioned radio frequency module can be fixedly installed the cavity being arranged in car plate body 11 back side, as shown in Figure 1 b, but, this kind of method to set up there will be the problem that the signal that radio frequency module launches is stopped 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, such as can adopt acrylonitrile-butadiene-styrene (ABS) copolymerization (ABS) resin, but the present invention is not limited thereto.
For the electronic license plate of structure shown in above-mentioned Fig. 1 a and Fig. 1 b, the elasticity that its self-power supply device comprises nano friction generator 21 and correspondence thereof knocks parts 22, as shown in Figure 2 a, this nano friction generator 21 is positioned on the sidewall of cavity 23, one end that elasticity knocks parts 22 is fixed on the bottom of this cavity 23, and the other end that this elasticity knocks parts 22 is corresponding with above-mentioned intake opening 12 position. The electronic license plate of said structure can be fixedly installed on vehicle, when running car, air-flow blows elasticity by intake opening 12 and knocks parts 22 and move, and then continues to beat nano friction generator generating, further by electrical power storage to be used for as radio frequency module 13 is powered.
Can selection of land, above-mentioned self-power supply device can comprise nano friction generator 21 and one end is fixed on the elasticity parts 24 of this cavity 23 sidewall, this nano friction generator 21 is vertically positioned at the bottom of above-mentioned cavity 23, one surface of this nano friction generator 21 is corresponding with above-mentioned intake opening 12, another surface of this nano friction generator 21 is connected with the other end of these elasticity parts 24, in figure 2b, these elasticity parts are spring. The electronic license plate of said structure can be fixedly installed on vehicle, when running car, air-flow blows nano friction generator 21 by intake opening 12 and moves, and spring can make nano friction generator sustained vibration, and then raising generating efficiency, final store electrical energy is to be used for as radio frequency module for power supply.
This self-power supply device adopts air-flow to blow nano friction generator and generates electricity and store utilization, it is achieved that self-powered function, meets the high energy consumption demand of active radio frequency module, and then achieve 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: rectifying circuit module 31, filter circuit module 32, transforming circuit module 33 and the tank circuit module 34 being connected successively, as shown in Figure 3, wherein: above-mentioned rectifying circuit module 31 is connected with above-mentioned nano friction generator 21, for the pulse signal that above-mentioned nano friction generator 21 exports is carried out rectification, the direct current of output single-phase pulsation; Above-mentioned filter circuit module 32 is for after the direct current filtering clutter interference of the single-phase pulsation that above-mentioned rectifying circuit module 31 exports, exporting direct current; Above-mentioned transforming circuit module 33, for the direct current that above-mentioned filter circuit module 32 exports is carried out transformation, exports the electrical signal being applicable to tank circuit module 34 and storing; Above-mentioned tank circuit module 34 is for storing the electrical signal that above-mentioned transforming circuit module 33 exports. Above-mentioned tank circuit module 34 can select the energy storage elements such as lithium cell, nickel metal hydride battery, super capacitor.
In addition, above-mentioned radio frequency module 13 can comprise: wireless receiving module 41, trip switch module 42, CPU control module 43 and the wireless transmitter module 44 connected successively, as shown in Figure 4, wherein: the electromagnetism signal that above-mentioned wireless receiving module 41 sends for receiving card reader is also forwarded to above-mentioned trip switch module 42; Above-mentioned trip switch module 42 is connected with above-mentioned self-power supply device, specifically, trip switch module 42 is connected with above-mentioned tank circuit module 34, for making oneself conducting according to the above-mentioned electromagnetism signal received, power so that above-mentioned self-power supply device is above-mentioned CPU control module 43 and above-mentioned wireless transmitter module 44; Above-mentioned CPU control module 43, for extracting license board information according to the electromagnetism signal received from this locality, sends this license board information to above-mentioned wireless transmitter module 44 and powers for this wireless transmitter module 44 simultaneously; 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 the card reader of correspondence.
Specifically, when above-mentioned electronic license plate is arranged on automobile, when vehicle movement is to card reader readable region, the wireless receiving module 41 being arranged in the radio frequency module 13 on electronic license plate can receive the electromagnetism signal that card reader sends, this electromagnetism signal can be opened by wireless receiving module 41 drived control switch module 42, self-power supply device is connected with CPU control module 43, thus power for CPU control module 43 and wireless transmitter module 44, and CPU control module 43 can control wireless transmitter module 44 that the information of vehicles received from CPU control module 43 is sent to card reader.
Below by structure and the principle of work of the nano friction generator in above-mentioned for detail electronic license plate:
The first structure of nano friction generator is as shown in figure 5 a and 5b. Fig. 5 a and Fig. 5 b respectively illustrates perspective view and the cross-sectional view of the first structure of nano friction generator. This nano friction generator comprises: the first electrode 51, the first high molecular polymer insulation layer 52 being cascading, and the 2nd electrode 53. Specifically, the first side that the first electrode 51 is arranged on the first high molecular polymer insulation layer 52 is on the surface; And first the 2nd surface, side of high molecular polymer insulation layer 52 with the surface contact friction of the 2nd electrode 53 and induce electric charge at the 2nd electrode and the first electrode place. Therefore, the first above-mentioned electrode 51 and the 2nd electrode 53 form two output electrodes of nano friction generator.
In order to improve the power generation capacity of nano friction generator, it is provided with micro-nano structure 54 further on the 2nd surface, side (namely on the face of relative 2nd electrode 53) of the first high molecular polymer insulation layer 52. Therefore, when nano friction generator is squeezed, the apparent surface of the first high molecular polymer insulation layer 52 and the 2nd electrode 53 can contact friction better, and induce more electric charge at the first electrode 51 and the 2nd electrode 53 place. Being mainly used in rubbing with the first high molecular polymer insulation layer 52 due to the 2nd above-mentioned electrode 53, therefore, the 2nd electrode 53 can also be referred to as friction electrode.
The implementation that above-mentioned micro-nano structure 54 specifically can take the following two kinds possible: first kind of way is, this micro-nano structure is micron order or nano level very little concaveconvex structure. This concaveconvex structure can increase friction resistance, it is to increase generating efficiency. Above-mentioned concaveconvex structure directly can be formed when prepared by film, it is also possible to the concaveconvex structure making the surface formation of the first high molecular polymer insulation layer irregular by the method for polishing. Specifically, this concaveconvex structure can be the concaveconvex structure of semicircle, striated, cubic type, rectangular pyramid or the shape such as cylindrical. 2nd kind of mode is, this micro-nano structure is nano level cavernous structure, now the first high molecular polymer insulation layer material therefor is preferably polyvinylidene difluoride (PVDF) (PVDF), and its thickness is the preferred 1.0mm of 0.5-1.2mm(), and the face of its relative 2nd electrode is provided with multiple nanoporous. Wherein, the size of each nanoporous, i.e. width and the degree of depth, it is possible to according to application needs select, it is preferable that nanoporous be of a size of: width is that 10-100nm and the degree of depth are 4-50 ��m. The quantity of nanoporous can output current value as required and magnitude of voltage adjust, it is preferable that these nanoporouss to be pitch of holes be 2-30 ��m be uniformly distributed, it is more preferable to average pitch of holes be 9 ��m be uniformly distributed.
Lower mask body introduces the principle of work of the nano friction generator shown in Fig. 5 a and Fig. 5 b. When each layer of this nano friction generator is bending downwards, the 2nd electrode 53 in nano friction generator produces static charge with the first high molecular polymer insulation layer 52 surface phase mutual friction, the generation of static charge can make the electric capacity between the first electrode 51 and the 2nd electrode 53 change, thus causes potential difference occur between the first electrode 51 and the 2nd electrode 53. When each layer of this nano friction generator returns to original state, the built-in potential being at this moment formed between the first electrode and the 2nd electrode disappears, and now will again produce reverse potential difference between Balanced first electrode and the 2nd electrode. By repeatedly rubbing and recover, so that it may to form periodic ac signal in external circuit. 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, thus achieves self-charging.
Research according to contriver finds, metal and high molecular polymer friction, the more volatile de-electronation of metal, therefore adopts metal electrode and high molecular polymer friction can improve energy output. Therefore, correspondingly, in the nano friction generator shown in Fig. 5 a and Fig. 5 b, due to needs, as rubbing, electrode (i.e. metal) rubs 2nd electrode with 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 aluminium alloy, titanium alloy, magnesium alloy, beryllium alloy, copper alloy, zinc alloy, manganese alloy, nickelalloy, lead alloy, tin alloy, cadmium alloy, bismuth alloy, indium alloy, gallium alloy, tungstenalloy, molybdenum alloy, niobium alloy or tantalum alloy. First electrode is not owing to needing to rub, therefore, except can selecting the material of above-mentioned the 2nd electrode enumerated, other materials that can make electrode can also be applied, that is, 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 aluminium alloy, titanium alloy, magnesium alloy, beryllium alloy, copper alloy, zinc alloy, manganese alloy, nickelalloy, lead alloy, tin alloy, cadmium alloy, bismuth alloy, indium alloy, gallium alloy, tungstenalloy, molybdenum alloy, niobium alloy or tantalum alloy, it is also possible to is selected from the non-metallic material such as indium tin oxide, Graphene, nano silver wire film.
2nd kind of structure of nano friction generator is as shown in figures 6 a and 6b. Fig. 6 a and Fig. 6 b respectively illustrates perspective view and the cross-sectional view of the 2nd kind of structure of nano friction generator. This nano friction generator comprises: the first electrode 61, first high molecular polymer insulation layer the 62, two high molecular polymer insulation layer 64 and the 2nd electrode 63 being cascading. Specifically, the first side that the first electrode 61 is arranged on the first high molecular polymer insulation layer 62 is on the surface; The first side that 2nd electrode 63 is arranged on the 2nd high molecular polymer insulation layer 64 is on the surface; Wherein, the 2nd surface, side of the first high molecular polymer insulation layer 62 rubs with the 2nd side surface contact of the 2nd high molecular polymer insulation layer 64 and induces electric charge at the first electrode 61 and the 2nd electrode 63 place. Wherein, the first electrode 61 and the 2nd electrode 63 form two output electrodes of nano friction generator.
In order to improve the power generation capacity of nano friction generator, at least one face in two faces that the first high molecular polymer insulation layer 62 and the 2nd high molecular polymer insulation layer 64 are oppositely arranged is provided with micro-nano structure. In figure 6b, the face of the first high molecular polymer insulation layer 62 is provided with micro-nano structure 65. Therefore, when nano friction generator is squeezed, the apparent surface of the first high molecular polymer insulation layer 62 and the 2nd high molecular polymer insulation layer 64 can contact friction better, and induce more electric charge at the first electrode 61 and the 2nd electrode 63 place. Above-mentioned micro-nano structure can refer to description above, repeats no more herein.
The principle of work of the nano friction generator shown in the principle of work of the nano friction generator shown in Fig. 6 a and Fig. 6 b and Fig. 5 a and Fig. 5 b is similar. Difference is only, when each layer of the nano friction generator shown in Fig. 6 a and Fig. 6 b is bending, is to produce static charge by the surperficial phase mutual friction of the first high molecular polymer insulation layer 62 and the 2nd high molecular polymer insulation layer 64. Therefore, principle of work about the nano friction generator shown in Fig. 6 a and Fig. 6 b repeats no more herein.
Nano friction generator shown in Fig. 6 a and Fig. 6 b produces electrical signal mainly through the friction between polymkeric substance (the first high molecular polymer insulation layer) and polymkeric substance (the 2nd high molecular polymer insulation layer).
In such an embodiment, first electrode and the 2nd 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 aluminium alloy, titanium alloy, magnesium alloy, beryllium alloy, copper alloy, zinc alloy, manganese alloy, nickelalloy, lead alloy, tin alloy, cadmium alloy, bismuth alloy, indium alloy, gallium alloy, tungstenalloy, molybdenum alloy, niobium alloy or tantalum alloy.
In such an embodiment, the material of the first high molecular polymer insulation layer and the 2nd high molecular polymer insulation layer can be identical in principle, it is also possible to different. But, if the material of two layers of high molecular polymer insulation layer is all identical, the quantity of electric charge of triboelectrification can be caused very little. It is therefore preferred to, the first high molecular polymer insulation layer is different from the material of the 2nd high molecular polymer insulation layer.
In above-mentioned two kinds of structures, the first high molecular polymer insulation layer and the 2nd high molecular polymer insulation layer are selected from Kapton respectively, aniline formaldehyde resin film, polyoxymethylene film, ethyl cellulose film, polyamide layer, melamino-formaldehyde film, polyoxyethylene glycol succinate film, cellulosefilm, 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, methacrylic acid ester film, PVA (PVOH) FILM, PVA (PVOH) FILM, polyester film, polyisobutene film, polyurethane flexible sponge film, pet film, polyvinyl butyral film, formaldehyde phenol film, chloroprene rubber film, divinyl propylene copolymer film, natural rubber films, polyacrylonitrile film, one in vinyl cyanide vinyl chloride film and polyethylene third diphenol carbonate thin film.
Except above-mentioned two kinds of structures, nano friction generator can also adopt the third structure to realize, as shown in figs. 7 a and 7b. Fig. 7 a and Fig. 7 b respectively illustrates perspective view and the cross-sectional view of the third structure of nano friction generator. As can be seen from the figure, the third structure adds a thin film layer between two parties on the basis of the 2nd kind of structure, that is: the nano friction generator of the third structure comprises the first electrode 71, the first high molecular polymer insulation layer 72, between two parties thin film layer 70, the 2nd high molecular polymer insulation layer 74 and the 2nd electrode 73 that are cascading. Specifically, the first side that the first electrode 71 is arranged on the first high molecular polymer insulation layer 72 is on the surface; On the surface, and thin film layer 70 is arranged between the 2nd surface, side of the first high molecular polymer insulation layer 72 and the 2nd surface, side of the 2nd high molecular polymer insulation layer 74 between two parties in the first side that 2nd electrode 73 is arranged on the 2nd high molecular polymer insulation layer 74. Wherein, at least one face in two faces that described thin film layer between two parties 70 and the first high molecular polymer insulation layer 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 film layer between two parties 70 and the 2nd high molecular polymer insulation layer 74 is provided with micro-nano structure 75, can refer to about the concrete set-up mode of micro-nano structure 75 and describe above, repeat no more herein.
The material of the nano friction generator shown in Fig. 7 a and Fig. 7 b can be selected with reference to the material of the nano friction generator of aforesaid 2nd kind of structure. Wherein, between two parties thin film layer can also be selected from transparent high polymer polyethylene terephthalate (PET), polydimethylsiloxane (PDMS), polystyrene (PS), polymethylmethacrylate (PMMA), polycarbonate (PC) and polymeric liquid crystal copolymer (LCP) any one. Wherein, material preferably transparent superpolymer polyethylene terephthalate (PET) of described first high molecular polymer insulation layer and the 2nd high molecular polymer insulation layer; Wherein, the preferred polydimethylsiloxane of the material (PDMS) of described thin film layer between two parties. Above-mentioned the first high molecular polymer insulation layer, the material of the 2nd high molecular polymer insulation layer, between two parties thin film layer can be identical, it is also possible to different. But, if the material of three layers of high molecular polymer insulation layer is all identical, the quantity of electric charge of triboelectrification can be caused very little, therefore, in order to improve friction effect, the material of thin film layer is different from the first high molecular polymer insulation layer and the 2nd high molecular polymer insulation layer between two parties, the material of the first high molecular polymer insulation layer and the 2nd high molecular polymer insulation layer is then preferably identical, like this, material kind can be reduced, make the making of the present invention convenient.
In the implementation shown in Fig. 7 a and Fig. 7 b, thin film layer 70 is one layer of polymeric film between two parties, therefore substantially similar with the implementation shown in Fig. 6 a and Fig. 6 b, still it is generated electricity by the friction between polymkeric substance (between two parties thin film layer) and polymkeric substance (the 2nd high molecular polymer insulation layer). Wherein, thin film layer is easily prepared and stable performance between two parties.
In addition, nano friction generator can also adopt the 4th kind of structure to realize, as figures 8 a and 8 b show, comprise: the first electrode 81 being cascading, first high molecular polymer insulation layer 82, between two parties electrode layer 80, the 2nd high molecular polymer insulation layer 84 and the 2nd electrode 83; Wherein, the first side that the first electrode 81 is arranged on the first high molecular polymer insulation layer 82 is on the surface; On the surface, electrode layer 80 is arranged between the 2nd surface, side of the first high molecular polymer insulation layer 82 and the 2nd surface, side of the 2nd high molecular polymer insulation layer 84 between two parties in the first side that 2nd electrode 83 is arranged on the 2nd high molecular polymer insulation layer 84. Wherein, at least one face in the face of the relative face first high molecular polymer insulation layer 82 relative to electrode layer 80 between two parties of electrode layer 80 between two parties of the first high molecular polymer insulation layer 82 is provided with micro-nano structure (not shown); And/or the 2nd the high molecular polymer insulation layer 84 face two high molecular polymer insulation layer 84 relative to electrode layer 80 between two parties of electrode layer 80 relatively between two parties face at least one face on be provided with micro-nano structure (not shown). In this fashion, by electrode layer 80 between two parties and the generation static charge that rubs between the first high molecular polymer insulation layer 82 and the 2nd high molecular polymer insulation layer 84, thus will between two parties electrode layer 80 and produce potential difference between the first electrode 81 and the 2nd electrode 83, now, the first electrode 81 and the series connection of the 2nd electrode 83 are an output electrode of nano friction generator; Electrode layer 80 is another output electrode of nano friction generator between two parties.
In the structure shown in Fig. 8 a and Fig. 8 b, the material of the first high molecular polymer insulation layer, the 2nd high molecular polymer insulation layer, the first electrode and the 2nd electrode can be selected with reference to the material of the nano friction generator of aforesaid 2nd kind of structure. Electrode layer can select conductive film, conducting polymer, metallic substance between two parties, metallic substance comprises pure metal and alloy, pure 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 (aluminium alloy, titanium alloy, magnesium alloy, beryllium alloy etc.), heavy non-ferrous alloy (copper alloy, zinc alloy, manganese alloy, nickelalloy etc.), low melting point alloy (lead, tin, cadmium, bismuth, indium, gallium and alloy thereof), high melting point alloy (tungstenalloy, molybdenum alloy, niobium alloy, tantalum alloy etc.). The thickness of electrode layer 80 preferably 100 ��m-500 ��m between two parties, it is more preferable to 200 ��m.
Military car plate is more suitable for adopting above-mentioned electronic license plate, is stored in the middle of electronic license plate by military information of vehicles, makes supervision department can supervise military license board information, prevents car owner from using false military car plate to deceive supervision.
Above-mentioned electronic license plate adopts nano friction generator to collect the energy in vehicle driving process to radio frequency module for power supply, is not having to achieve in battery-driven situation active transmitting; Power with nano friction generator and realize active transmitting, enable radio frequency complete transmission over radio more at a distance and in a big way. In addition, nano friction generator is adopted to collect the energy of waste in vehicle driving process, it is achieved that energy-conserving and environment-protective. Further, the electronic license plate of the present invention adopts the mode of self-starting to carry out RF identification, only just can automatically launch after receiving electromagnetism signal, avoid the waste of electric energy preferably, saved electric energy.
Finally; what enumerate it is to be noted that above is only specific embodiments of the invention; the present invention can be changed and modification by the technician of certain this area; if these amendments and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, protection scope of the present invention all should be thought.
Claims (10)
1. an electronic license plate, it is characterized in that, this electronic license plate comprises: car plate body, the intake opening being arranged on car plate body, the cavity below that is arranged on this intake opening, the self-power supply device being positioned at 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 for power supply;
Described radio frequency module, for receiving the electromagnetism signal that card reader sends, sends license board information according to this electromagnetism signal to this card reader;
Wherein, the elasticity that described self-power supply device comprises nano friction generator and correspondence thereof knocks parts, described nano friction generator is positioned on the sidewall of described cavity, one end that described elasticity knocks parts is fixed on the bottom of described cavity, and the other end that described elasticity knocks parts is corresponding with described intake opening position; Or
Described self-power supply device comprises nano friction generator and one end is fixed on the elasticity parts of sidewall of described cavity, described nano friction generator is vertically positioned at the bottom of described cavity, one surface of described nano friction generator is corresponding with described intake opening, and another surface of described nano friction generator is connected with the other end of described elasticity parts.
2. electronic license plate according to claim 1, it is characterised in that, described elasticity parts are spring.
3. electronic license plate according to claim 1, it is characterised in that, described self-power supply device also comprises: rectifying circuit module, filter circuit module, transforming circuit module and the tank circuit module being connected successively, wherein:
Described rectifying circuit module, is connected with described nano friction generator, carries out rectification for the pulse signal described nano friction generator exported, the direct current of output single-phase pulsation;
Described filter circuit module, after being disturbed by the direct current filtering clutter of the single-phase pulsation that described rectifying circuit module exports, exports direct current;
Described transforming circuit module, carries out transformation for the direct current exported by described filter circuit module, exports the electrical signal being applicable to tank circuit module and storing;
Described tank circuit module, for storing the electrical signal that described transforming circuit module exports.
4. electronic license plate according to claim 3, it is characterised in that, described radio frequency module comprises: wireless receiving module, trip switch module, CPU control module and the wireless transmitter module connected successively, wherein:
Described wireless receiving module, for receiving the electromagnetism signal of card reader transmission and be forwarded to described trip switch module;
Described trip switch module, is connected with described self-power supply device, for making oneself conducting according to the described electromagnetism signal received, powers so that described self-power supply device is described CPU control module and described wireless transmitter module;
Described CPU control module, for extracting license board information according to the electromagnetism signal received from this locality, sends this license board information to described wireless transmitter module and powers for described wireless transmitter module simultaneously;
Described wireless transmitter module, for the license board information sent according to the described CPU control module of reception, and sends license board information to the card reader of correspondence.
5. electronic license plate according to claim 1-4 any claim, it is characterised in that, described nano friction generator comprises: the first electrode being cascading, the first high molecular polymer insulation layer, and the 2nd electrode; Wherein, the first side that described first electrode is arranged on described first high molecular polymer insulation layer is on the surface; And the 2nd surface, side of described first high molecular polymer insulation layer is arranged towards described 2nd electrode.
6. electronic license plate according to claim 5, it is characterised in that, the 2nd side of described first high molecular polymer insulation layer is provided with micro-nano structure on the surface.
7. electronic license plate according to claim 5, it is characterized in that, described nano friction generator also comprises: the 2nd high molecular polymer insulation layer being arranged between described 2nd electrode and described first high molecular polymer insulation layer, and the first side that described 2nd electrode is arranged on described 2nd high molecular polymer insulation layer is on the surface; And the 2nd surface, side of the 2nd surface, side of described 2nd high molecular polymer insulation layer and described first high molecular polymer insulation layer is oppositely arranged.
8. electronic license plate according to claim 7, it is characterised in that, at least one face in two faces that described first high molecular polymer insulation layer and the 2nd high molecular polymer insulation layer are oppositely arranged is provided with micro-nano structure.
9. electronic license plate according to claim 7, it is characterized in that, described nano friction generator also comprises: the thin film layer between two parties being arranged between described first high molecular polymer insulation layer and described 2nd high molecular polymer insulation layer, wherein, described thin film layer between two parties is polymer film layer, and described first high molecular polymer insulation layer relatively described between two parties thin film layer face and thin film layer between two parties relative at least one face in the face of the first high molecular polymer insulation layer and/or described 2nd high molecular polymer insulation layer relative described in the face two high molecular polymer insulation layer relative to thin film layer between two parties of thin film layer between two parties face at least one face be provided with micro-nano structure.
10. electronic license plate according to the arbitrary item of claim 1-4, it is characterized in that, described nano friction generator comprises: the first electrode being cascading, the first high molecular polymer insulation layer, electrode layer between two parties, the 2nd high molecular polymer insulation layer and the 2nd electrode; Wherein, the first side that described first electrode is arranged on described first high molecular polymer insulation layer is on the surface; The first side that described 2nd electrode is arranged on described 2nd high molecular polymer insulation layer is on the surface, described electrode layer between two parties is arranged between the 2nd surface, side of described first high molecular polymer insulation layer and the 2nd surface, side of described 2nd high molecular polymer insulation layer, and described first high molecular polymer insulation layer relatively described between two parties electrode layer face and electrode layer between two parties relative at least one face in the face of the first high molecular polymer insulation layer and/or described 2nd high molecular polymer insulation layer relative described in the face two high molecular polymer insulation layer relative to electrode layer between two parties of electrode layer between two parties face at least one face be provided with micro-nano structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310122335.6A CN104097584B (en) | 2013-04-10 | 2013-04-10 | Electronic license plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310122335.6A CN104097584B (en) | 2013-04-10 | 2013-04-10 | Electronic license plate |
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| CN104097584A CN104097584A (en) | 2014-10-15 |
| CN104097584B true CN104097584B (en) | 2016-06-08 |
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| CN201310122335.6A Active CN104097584B (en) | 2013-04-10 | 2013-04-10 | Electronic license plate |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105654169B (en) * | 2014-11-12 | 2018-09-28 | 北京纳米能源与系统研究所 | Bar code system based on friction nanometer power generator |
| TWI646468B (en) * | 2017-05-01 | 2019-01-01 | 永豐泰科技企業有限公司 | Vehicle listing wireless electronic identifier |
| CN107415858A (en) * | 2017-05-19 | 2017-12-01 | 易微行（北京）科技有限公司 | A kind of automobile |
| CN107415860A (en) * | 2017-05-19 | 2017-12-01 | 易微行（北京）科技有限公司 | A kind of passive car plate |
| CN107128257A (en) * | 2017-05-19 | 2017-09-05 | 易微行（北京）科技有限公司 | A kind of automobile |
| CN107415857A (en) * | 2017-05-19 | 2017-12-01 | 易微行（北京）科技有限公司 | A kind of durable passive car plate |
| CN107117113A (en) * | 2017-05-19 | 2017-09-01 | 易微行（北京）科技有限公司 | A kind of automobile |
| CN107415859A (en) * | 2017-05-19 | 2017-12-01 | 易微行（北京）科技有限公司 | A kind of passive car plate |
| CN107139863A (en) * | 2017-05-19 | 2017-09-08 | 易微行（北京）科技有限公司 | A kind of automobile |
| CN107415856A (en) * | 2017-05-19 | 2017-12-01 | 易微行（北京）科技有限公司 | A kind of durable passive car plate |
| CN110163018B (en) * | 2018-05-30 | 2022-10-25 | 北京纳米能源与系统研究所 | Self-driven signal identification method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005033336A1 (en) * | 2005-07-16 | 2007-01-18 | Daimlerchrysler Ag | Vehicle with a transponder |
| CN101239640A (en) * | 2006-08-05 | 2008-08-13 | 谢开福 | Ratchet mutually powering worm-gear footstep vehicle |
| GB2453598A (en) * | 2007-10-12 | 2009-04-15 | Gould Autoplates And Signs Ltd | A registration plate incorporating a transponder |
| CN202608694U (en) * | 2011-07-01 | 2012-12-19 | 山东佳信自动化有限公司 | Composite radio-frequency electronic vehicle registration plate |
| CN102868425B (en) * | 2011-07-07 | 2015-08-05 | 深圳市华奥通通信技术有限公司 | A kind of micro power radio communication device |
| CN202177917U (en) * | 2011-08-25 | 2012-03-28 | 深圳市华奥通通信技术有限公司 | RFID apparatus |
| CN102710166B (en) * | 2012-04-13 | 2015-01-07 | 纳米新能源（唐山）有限责任公司 | Friction generator |
| CN203211224U (en) * | 2013-04-10 | 2013-09-25 | 纳米新能源（唐山）有限责任公司 | Electronic license plate |
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