CN103036051B - Smart camera - Google Patents
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- CN103036051B CN103036051B CN201110295892.9A CN201110295892A CN103036051B CN 103036051 B CN103036051 B CN 103036051B CN 201110295892 A CN201110295892 A CN 201110295892A CN 103036051 B CN103036051 B CN 103036051B
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Abstract
The present invention relates to a kind of smart camera, it includes camera main-body and antenna, described antenna is arranged on described camera main-body and conducts signal transmission, described antenna is Super-material antenna, feeder line that described Super-material antenna includes a medium substrate and is connected with described distributing point with the distributing point being arranged at described medium substrate one surface and a metal structure；Described feeder line intercouples with described metal structure.Smart camera of the present invention not only can use the mode being wirelessly transferred to transmit data, and use built-in Super-material antenna, send as an envoy to based on Super-material antenna Technology design the Super-material antenna of electromagnetic wave resonance of a wave band, two or more different-waveband, determine that the physical size of the metal structure size of this antenna volume is not limited by the physical length of half-wavelength, corresponding antenna can be gone out according to the size design of smart camera own, meet the demand of wireless telecommunications system miniaturization, built-in antenna and high-gain.
Description
Technical field
The present invention relates to camera, especially relate to a kind of smart camera carrying out wirelessly transmitting data.
Background technology
Along with the fast development of camera technique, camera is not only applicable to common photography, and it is also gradually available for each fields such as monitoring, medical.At the camera of each field utilizations such as monitoring, medical, need at recording device records image, it is therefore desirable to be provided with the jumbo recording equipments such as nonvolatile memory at camera internal.After described recording device records image, the image i.e. after shooting terminates, captured by taking-up.When being equipped with nonvolatile memory in the camera, by described nonvolatile memory is taken out in described camera, in being inserted into the card reader being connected with computer or in the insertion computer with card reader, thus just can send the image captured by camera to computer.It is unkitted when being furnished with nonvolatile memory in the camera, camera is directly connected with computer by transmission line, just the image captured by camera can be sent to computer.Therefore, existing camera uses extremely inconvenience.
Summary of the invention
In order to solve problem present in existing smart camera, the invention provides a kind of smart camera carrying out wirelessly transmitting data, by applying high performance Meta Materials built-in aerial technology, device miniaturization, built-in antenna, the remote and demand of high-gain can be met, the present invention by the following technical solutions:
A kind of smart camera includes camera main-body and antenna, described antenna is arranged on described camera main-body and conducts signal transmission, described antenna is Super-material antenna, feeder line that described Super-material antenna includes a medium substrate and is connected with described distributing point with the distributing point being arranged at described medium substrate one surface and a metal structure；Described feeder line intercouples with described metal structure.
Further, described metal structure is that sheet metal forms through engraving out groove topological structure.
Further, described Super-material antenna also includes that ground unit, described ground unit are symmetrically distributed described distributing point both sides；Several metallized through holes it are provided with on described ground unit.
Further, described Super-material antenna also includes one with reference to ground, described with reference to ground include being positioned at described medium substrate relative to first on two surfaces with reference to ground unit and second with reference to ground unit, described first makes one end of described feeder line form microstrip line with reference to ground unit.
Further, described first it is electrically connected to each other with reference to ground unit with reference to ground unit and second.
Further, described medium substrate is provided with some plated-through holes, and described first realizes electrically connecting by described plated-through hole with reference to ground unit with described second with reference to ground unit.
Further, described first is provided with, with reference to ground unit, the first metal covering unit and the second metal covering unit being electrically connected to each other, and described first metal covering unit is relative with an end position of described feeder line, makes one end of described feeder line form described microstrip line；Described second is provided with the 3rd metal covering unit with reference to ground unit, and described 3rd metal covering unit is relative with described second metal covering cell position.
Further, described medium substrate is positioned at described second metal covering unit and described 3rd metal covering unit and offers some plated-through holes, and described second metal covering unit is electrically connected by described plated-through hole with described 3rd metal covering unit.
Further, described second also includes the 4th metal covering unit with reference to ground unit, described 4th metal covering unit is positioned at the side of described feeder line one end, and is positioned on the bearing of trend of described feeder line, and described first metal covering unit is electrically connected by described plated-through hole with described 4th metal covering unit.
Further, the resonance band of described Super-material antenna at least includes 2.4GHz-2.49GHz and 5.72GHz-5.85GHz.
For hinge structure, smart camera of the present invention not only can use the mode being wirelessly transferred to transmit data, and use built-in Super-material antenna, send as an envoy to based on Super-material antenna Technology design the Super-material antenna of electromagnetic wave resonance of a wave band, two or more different-waveband, determine that the physical size of the metal structure size of this antenna volume is not limited by the physical length of half-wavelength, corresponding antenna can be gone out according to the size design of smart camera own, meet the demand of wireless telecommunications system miniaturization, built-in antenna and high-gain.It addition, by built-in Super-material antenna, it is possible to achieve at a high speed, ultra broadband, jumbo signal transmission.
Accompanying drawing explanation
Fig. 1 is the theory diagram of smart camera of the present invention；
Fig. 2 is the front view of antenna the first embodiment in smart camera of the present invention；
Fig. 3 is antenna rearview shown in Fig. 2；
Fig. 4 is antenna the first embodiment S parameter analogous diagram of the present invention；
Fig. 5 is the front view of antenna the second embodiment in smart camera of the present invention；
Fig. 6 is the front view of antenna the 3rd embodiment in smart camera of the present invention；
Fig. 7 is the metal structure enlarged drawing on second and third embodiment of inventive antenna；
Fig. 8 is antenna the 3rd embodiment S parameter analogous diagram of the present invention；
Fig. 9 be the embodiment of the present invention 2 operate in 2.4,2.44,2.48GHz time far field, E direction simulation result figure；
Figure 10 be the embodiment of the present invention 2 operate in 2.4,2.44,2.48GHz time far field, H direction simulation result figure；
Figure 11 be the embodiment of the present invention 2 operate in 5.725,5.8,5.85GHz time far field, E direction simulation result figure；
Figure 12 be the embodiment of the present invention 2 operate in 5.725,5.8,5.85GHz time far field, H direction simulation result figure.
Detailed description of the invention
With specific embodiment, smart camera of the present invention is further described below in conjunction with the accompanying drawings.
Referring to Fig. 1, it is the theory diagram of the smart camera in the present invention.Described smart camera 100 includes Super-material antenna 10 and camera main-body 11.Described Super-material antenna 10 electrically connects with described smart camera main body 11, and for electromagnetic signals.Described camera main-body 11 includes that viewdata signal is launched with electromagnetic wave by optical system 111, imaging system 112, digital information processing system 113, memory element 114 and rf transmitter unit 115, described digital information processing system 113 through described rf transmitter unit 115, described Super-material antenna 10.After the computer being provided with electromagnetic wave reception unit receives described electromagnetic wave signal, it is reduced into described viewdata signal, just realizes being wirelessly transferred of image.The present invention can be applicable to the fields such as commonness photograph, supervision, medical treatment.
In smart camera of the present invention, antenna is to form based on artificial electromagnetic material Technology design, artificial electromagnetic material refers to engrave into sheet metal the topological metal structure of given shape, and the topological metal structure of described given shape is arranged at the extraordinary electromagnetic material of the equivalence of processing and manufacturing on certain dielectric constant and pcrmeability base material, its performance parameter depends primarily on the topological metal structure of the given shape of its sub-wavelength.In resonance band, artificial electromagnetic material generally embodies the dispersion characteristics of height, in other words, the impedance of antenna, holds perceptual, equivalent dielectric constant and pcrmeability and violent change can occur along with frequency.Thus can use artificial electromagnetic material technology that the fundamental characteristics of above-mentioned antenna is transformed so that the medium substrate that metal structure depends on it equally constitutes a highly dispersed extraordinary electromagnetic material, thus realizes the new antenna that radiation characteristic is abundant.Several embodiments in application smart camera described in detail below:
First embodiment
See also Fig. 2 and Fig. 3, described Super-material antenna 10 includes medium substrate 1, metal structure 2, feeder line 3 and reference ground 41,42, described medium substrate 1 is in rectangular tabular, and it can be made up of materials such as high molecular polymer, pottery, ferroelectric material, ferrite material or ferromagnetic materials.In the present embodiment, the material of described medium substrate 1 uses glass material (FR4) to make, thus not only low cost, and can ensure to keep good antenna operating characteristics in different operating frequencies.
Described metal structure 2, feeder line 3 and reference ground 41, 42 are respectively placed on the two relative surfaces of described medium substrate 1, described metal structure 2, feeder line 3 and reference ground 41, 42 form Super-material antenna with described medium substrate 1, the performance of described Super-material antenna depends on described metal structure 2, in resonance band, Meta Materials generally embodies the dispersion characteristics of height, its impedance i.e., hold perception, the dielectric constant of equivalence and pcrmeability can occur violent change along with frequency, thereby through changing described metal structure 2 and the fundamental characteristics of medium substrate 1, just described metal structure 2 and medium substrate 1 is made equally to form a highly dispersed extraordinary electromagnetic material according to Lorentz material resonances model.
Referring to Fig. 4, the working frequency range of the Super-material antenna in the present embodiment is 2.4GHZ～2.49GHZ and 5.72GHZ～5.85GHZ, and the gain of this two frequency range above-mentioned is respectively up to 3.58dBi and 3.14dBi.It is understood that can arrange 10 response frequencies of Super-material antenna is 2.4GHZ～2.49GHZ frequency range, i.e. single-band antenna.
Described feeder line 3 is arranged on the side of described metal structure 2, and along the length direction extension of described metal structure 2, it intercouples with described metal structure 2, and wherein, one end bending of described feeder line 3 extends to side, described metal structure 2 end.Additionally, as required capacitive electrical element can be embedded for space between described feeder line 3 and metal structure 2, couple, by formula by embedding the signal between capacitive electrical element regulation feeder line 3 and metal structure 2:Understand square being inversely proportional to, so when the operating frequency needed is relatively low operating frequency, can realize of the size of capacitance and operating frequency by being appropriately embed capacitive electrical element.The capacitance value range of capacitive electrical element added is generally between 0-2pF, but the capacitance embedded along with the change of operating frequency of antenna is likely to the scope beyond 0-2pF.
The described side being positioned at described feeder line 3 with reference to ground, makes one end being positioned at described metal structure 2 end of described feeder line 3 form microstrip line 31.In the present embodiment, described with reference to ground include first with reference to ground unit 41 and second with reference to ground unit 42, described first lays respectively at relative two surfaces of described medium substrate 1 with reference to ground unit 41 and second with reference to ground unit 42.Described first is provided with, with reference to ground unit 41, the first metal covering unit 411 and the second metal covering unit 412 being electrically connected to each other.Described second is positioned at the same side of described medium substrate 1 with reference to ground unit 42 and described feeder line 3, and is provided with the 3rd metal covering unit 421 and the 4th metal covering unit 422.
Described first metal covering unit 411 is relative with described feeder line 3 position, makes one end being positioned at described metal structure 2 end of described feeder line 3 form described microstrip line 31, and the most described is virtually with reference to ground.Described second metal covering unit 412 is relative with described 3rd metal covering unit 421 position.Described 3rd metal covering unit 421 is positioned at one end of described metal structure 2, and described 3rd metal covering unit 421 is in long side tabular and identical with the bearing of trend of described feeder line 3.Described medium substrate 1 is positioned at described second metal covering unit 412 and described 3rd metal covering unit 421 and offers some plated-through holes 5, and described second metal covering unit 412 is electrically connected by described plated-through hole 5 with described 3rd metal covering unit 421.
Described 4th metal covering unit 422 is positioned at the side of described feeder line 3 one end, and is positioned on the bearing of trend of described feeder line 3.Described medium substrate 1 is positioned at described first metal covering unit 411 and described 4th metal covering unit 422 and offers some plated-through holes 5, and described first metal covering unit 411 is electrically connected by described plated-through hole 5 with described 4th metal covering unit 422.Form described microstrip line 31 by one end of the first metal covering unit 411 with described feeder line 3, thus the external signal signal disturbing to transmitting on described feeder line 3 can be reduced, improve antenna gain, it is achieved preferably impedance matching, save material, low cost.Arranged by position cleverly between described first metal covering unit 411 to the 4th metal covering unit 422, thus take less space with making described reference, just realize bigger area.Additionally, by arranging described plated-through hole 5, thus can further improve the described area with reference to ground.
In sum, High-gain metamaterial antenna of the present invention is passed through critically to control microstrip line 31 described in the topographic morphologies of metal structure 2 and layout, obtain effective dielectric constant and the pcrmeability distribution needed, enable the antenna to enough in working frequency range, realize preferable impedance matching, complete energy conversion expeditiously, and obtain preferable radiation pattern, it is little that it takies volume, low to environmental requirement, and gain is high, applied range, is suitable for the built-in aerial of smart camera.
Second embodiment
As it is shown in figure 5, be the structural representation of the Super-material antenna 10 of the embodiment of the present invention.Super-material antenna 10 in the present embodiment includes feeder line 4, the metal structure 6 of plane tabular that medium substrate 7 and the distributing point 5 being arranged on medium substrate 7 be connected with this distributing point 5.Wherein, feeder line 4 intercouples with metal structure 6；Metal structure 6 is that sheet metal forms through engraving out groove topological structure 61, the material of groove topological structure 61 correspondence is removed when engraving, remaining sheet metal is metal structure 6, after engraving out groove topological structure 61, sheet metal presents the metal routing 62 being included in metal structure 6；In groove topological structure 61, the spacing of adjacent slot is the width of metal routing 62, and the groove width of groove topological structure 61 is equal with the width of metal routing 62, and is 0.15mm；Medium substrate 7 can be made up of ceramic material, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material, it is preferable that is made up of macromolecular material, can be specifically the macromolecular materials such as FR-4, F4B.
In the present embodiment, metal structure 6 is axisymmetric plane tabular.Wherein metal structure 6 is made for copper or ag material.It is preferably copper, cheap, conduct electricity very well.In order to realize more preferable impedance matching, metal structure 6 is alternatively copper and silver combination.
Refer to Fig. 6, be also to include ground unit 8 for third embodiment of the invention front view, the 3rd embodiment and the difference of the second embodiment, ground unit 8 is provided with some metallized through holes 81；Ground unit 8 is symmetrically distributed described distributing point 5 both sides, and the selection of medium substrate 7 is same as in Example 1.Fig. 7 show the enlarged drawing of the metal structure of the second embodiment and the 3rd embodiment.It is to be understood that signal feed-in mode can have multiple between feeder line 4 and metal structure 6.Described feeder line 4 is directly connected with described metal structure 6；And described feeder line 4 may be located at the optional position in metal structure 6 with the connecting point position that is connected of metal structure 6.Feeder line 4 uses encirclement mode to be arranged at peripheral and feeder line 4 the end of described metal structure 6 and is arranged at the peripheral optional position of metal structure 6.
The present embodiment utilizes the characteristic of artificial electromagnetic material, use the mode engraving into metal structure on sheet metal, make metal structure and the medium substrate that depended on metal structure collectively constitute the effective dielectric constant electromagnetic material according to Lorentz lorentz's material resonances model dispersion, thus design the antenna of multi-resonant frequency range.In the present embodiment, antenna shown in second embodiment and the 3rd embodiment makes two frequency range electromagnetic wave resonance of 2.4GHz-2.49GHz and 5.72GHz-5.85GHz, the length of metal structure 6 and width can do arbitrarily adjustment according to communication apparatus organization distribution, but metal structure 6 planform keeps consistent with the present embodiment, this unipole antenna may be used for single-frequency 2.4GHz-2.49GHz or the communication apparatus of 5.72GHz-5.85GHz frequency range, it is also possible to for double frequency 2.4GHz-2.49GHz and the communication apparatus of 5.72GHz-5.85GHz frequency range.
nullIt is illustrated in figure 8 the S parameter analogous diagram of second embodiment of the invention and the 3rd embodiment，The antenna that the figure shows the second embodiment and the 3rd embodiment is respectively provided with the loss of-15.426dB and-19.184dB at 2.4GHz and 5.8018GHz，It is respectively provided with-10dB losses below in 2.4GHz-2.49GHz and 5.72GHz-5.85GHz frequency band of the presently claimed invention，Show that inventive antenna can individually work in 2.4GHz-2.49GHz or 5.72GHz-5.85GHz frequency band，Can also work in 2.4GHz-2.49GHz and 5.72GHz-5.85GHz frequency band simultaneously，And meet the requirement to Super-material antenna 10 in smart camera.
Fig. 9, Figure 10, Figure 11 and Figure 12 respectively illustrate second embodiment of the invention and the 3rd embodiment Super-material antenna 10 operate in 2.4,2.44,2.48GHz and 5.725,5.8,5.85GHz time respectively at vertical plane (E-Plane) and horizontal plane (H-Plane) far field, direction simulation result figure, in this result, be able to observe that the polarization effect of the Super-material antenna of the present invention is no less than existing antenna and meets application standard.
In the present invention, about the processing and manufacturing of Super-material antenna 10, as long as meeting the design principle of the present invention, various manufacture can be used.The most common method is the manufacture method using all kinds of printed circuit board (PCB)s (PCB), all can meet the processing request of the present invention as covered the PCB manufacture of copper.Except this processing mode, it is also possible to introduce other manufacturing process according to the actual needs, as conductive silver paste ink processing mode, all kinds of can the flexible PCB processing of deformable element, the processing mode of the processing mode of iron plate antenna and iron plate and PCB combination.Wherein, iron plate and PCB Combined machining mode refer to utilize the processing accurately having processed groove topological structure of PCB, complete other slave part with iron plate.Owing to using the copper product of low cost to form described metal structure 6, therefore exposure air is oxidized easily and makes Super-material antenna 10 resonance frequency shift or performance drastically decline, be therefore provided with nonmetallic anti-oxidation film on unipole antenna surface.Owing to the main performance of the present invention all concentrates on the design of metal structure 6 groove topological structure 61, therefore, the radiation frequency of Super-material antenna 10 is affected relatively small by the lead-in wire of feeder line 4.Based on this feature, unipole antenna can be placed in any position of system flexibly, the complexity installing test of simplification.
Above in conjunction with accompanying drawing, embodiments of the invention are described; but the invention is not limited in above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematically; rather than it is restrictive; those of ordinary skill in the art is under the enlightenment of the present invention; in the case of without departing from present inventive concept and scope of the claimed protection, it may also be made that a lot of form, within these belong to the protection of the present invention.
Claims (7)
1. a smart camera, including camera main-body and antenna, described antenna is arranged on described camera main-body and conducts signal transmission, it is characterized in that, described antenna is Super-material antenna, feeder line that described Super-material antenna includes a medium substrate and is connected with described distributing point with the distributing point being arranged at described medium substrate one surface and a metal structure；Described feeder line intercouples with described metal structure；
Described Super-material antenna also includes one with reference to ground, described with reference to ground include being positioned at described medium substrate relative to first on two surfaces with reference to ground unit and second with reference to ground unit, described first makes one end of described feeder line form microstrip line with reference to ground unit；
Described first is provided with, with reference to ground unit, the first metal covering unit and the second metal covering unit being electrically connected to each other, and described first metal covering unit is relative with an end position of described feeder line, makes one end of described feeder line form described microstrip line；Described second is provided with the 3rd metal covering unit with reference to ground unit, and described 3rd metal covering unit is relative with described second metal covering cell position；
Described second also includes the 4th metal covering unit with reference to ground unit, described 4th metal covering unit is positioned at the side of described feeder line one end, and be positioned on the bearing of trend of described feeder line, described first metal covering unit is electrically connected by described plated-through hole with described 4th metal covering unit.
Smart camera the most according to claim 1, it is characterised in that described metal structure is that sheet metal forms through engraving out groove topological structure.
Smart camera the most according to claim 1, it is characterised in that described Super-material antenna also includes that ground unit, described ground unit are symmetrically distributed described distributing point both sides；Several metallized through holes it are provided with on described ground unit.
Smart camera the most according to claim 1, it is characterised in that: described first is electrically connected to each other with reference to ground unit with reference to ground unit and second.
Smart camera the most according to claim 4, it is characterised in that: described medium substrate is provided with some plated-through holes, and described first realizes electrically connecting by described plated-through hole with reference to ground unit with described second with reference to ground unit.
Smart camera the most according to claim 1, it is characterized in that: described medium substrate is positioned at described second metal covering unit and described 3rd metal covering unit and offers some plated-through holes, and described second metal covering unit is electrically connected by described plated-through hole with described 3rd metal covering unit.
7. according to the smart camera described in any one of claim 1-5, it is characterised in that the resonance band of described Super-material antenna at least includes 2.4GHz-2.49GHz and 5.72GHz-5.85GHz.
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| CN201110295892.9A CN103036051B (en) | 2011-09-30 | 2011-09-30 | Smart camera |
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| CN201110295892.9A CN103036051B (en) | 2011-09-30 | 2011-09-30 | Smart camera |
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| CN103036051B true CN103036051B (en) | 2016-08-03 |
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| CN202434700U (en) * | 2011-09-30 | 2012-09-12 | 深圳光启高等理工研究院 | Intelligent camera |
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| US8451183B2 (en) * | 2008-09-05 | 2013-05-28 | Tyco Electronics Services Gmbh | Frequency-tunable metamaterial antenna apparatus |
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| CN1913224A (en) * | 2005-08-09 | 2007-02-14 | 技嘉科技股份有限公司 | Circuit board antenna |
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