CN103037142B - Camera - Google Patents
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- CN103037142B CN103037142B CN201110295936.8A CN201110295936A CN103037142B CN 103037142 B CN103037142 B CN 103037142B CN 201110295936 A CN201110295936 A CN 201110295936A CN 103037142 B CN103037142 B CN 103037142B
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- 238000012545 processing Methods 0.000 claims abstract description 15
- 238000003384 imaging method Methods 0.000 claims abstract description 4
- 230000000644 propagated effect Effects 0.000 claims description 3
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- 238000004088 simulation Methods 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
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- 239000010931 gold Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
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- 229910000859 α-Fe Inorganic materials 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
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Abstract
A kind of camera includes Super-material antenna, signal processing module and imaging sensor, and the Super-material antenna includes a medium substrate and is arranged at a distributing point on the surface of medium substrate one, the feeder line being connected with the distributing point and a metal structure；The feeder line intercouples with the metal structure, and described image sensor is used to absorb image information and is converted to electric signal；Signal processing module is used to handle the electric signal and produces object information, and the Super-material antenna is used to propagate the object information comprising video and audio with electromagnetic wave.The camera of the present invention is outer or inside sets Super-material antenna, it is possible to achieve but video/audio signal high speed, ultra wide band, Large Copacity are sent to computer storage equipment by above-mentioned wireless mode, reduction camera transmits the cost of signal using wired mode.
Description
Technical field
The present invention relates to picture pick-up device, more particularly, to a kind of wireless camera.
Background technology
Camera (CAMERA) is also known as camera computer, computer eye etc., is a kind of video input apparatus, is widely used
In terms of video conference, in real time tele-medicine and monitoring.Common people can also be had each other by camera in network
Image, the talk for having sound and communication.
Camera is divided into digital camera and the simulation major class of camera two.Digital camera can produce video capture device
Raw analog video signal is converted into data signal, and then is stored in computer.The video that simulation camera is captured
Signal has to pass through specific capure card and converts analog signals into figure pattern, and just may switch to after being compressed
Used on computer.Digital camera can directly catch image, then pass to computer by string, parallel port or USB interface
In.However, these cameras are required for being connected with computer by wired mode, it is especially useful in security monitoring camera is, it is necessary to portion
Messy cabling is affixed one's name to so that vision signal is transmitted into computer equipment in time, if once these messy cablings are cut off or some interface takes off
Fall, cause vision signal not to be stored in computer equipment, and these install inconvenience with wired camera.
Antenna is as the radiating element and receiving device of radio frequency signal, and its working characteristics will directly affect whole electronics
The service behaviour of system.But the important indicator such as size, bandwidth, gain of traditional antenna but receives basic physical principle
Limit (gain margin, bandwidth limit under fixed dimension etc.).The general principle of these index limit causes the miniaturization of antenna
Technical difficulty is considerably beyond other devices, and the complexity of the electromagnetic field analysis due to radio-frequency devices, approaches these limiting values
All become huge technological challenge.
The content of the invention
In order to solve problem present in existing camera, the invention provides a kind of wireless camera, pass through application
High performance Meta Materials built-in aerial technology, realizes built-inization of antenna, this hair on the premise of camera performance requirement is met
Bright use following technical scheme：
A kind of camera includes Super-material antenna, signal processing module and imaging sensor, and the Super-material antenna includes
One medium substrate and the feeder line and a gold medal for being arranged at a distributing point on the surface of medium substrate one, being connected with the distributing point
Belong to structure；The feeder line intercouples with the metal structure, and described image sensor is used to absorb image information and be converted to
Electric signal；Signal processing module is used to handle the electric signal and produces object information, and the Super-material antenna is used for will be described
Object information comprising video and audio is propagated with electromagnetic wave.
Further, the metal structure is that sheet metal is formed through engraving out groove topological structure.
Further, the Super-material antenna also includes ground unit, and the ground unit is symmetrically distributed the feed
Point both sides；The through hole of several metallization is provided with the ground unit.
Further, the Super-material antenna also includes a reference ground, and the reference ground includes being located at the medium substrate
With respect to the first reference ground unit and the second reference ground unit on two surfaces, the first reference ground unit makes the one of the feeder line
End forms microstrip line.
Further, the first reference ground unit and the second reference ground unit are electrically connected to each other.
Further, the medium substrate is provided with some plated-through holes, the first reference ground unit and described the
Two reference ground units are realized by the plated-through hole and electrically connected.
Further, the first reference ground unit is provided with the first metal covering unit and the second metal being electrically connected to each other
Face unit, the first metal covering unit is relative with an end position of the feeder line, one end of the feeder line is formed described micro-
Band line；The second reference ground unit is provided with the 3rd metal covering unit, the 3rd metal covering unit and second metal
Face cell position is relative.
Further, the medium substrate is located at the second metal covering unit and the 3rd metal covering unit and opened up
There are some plated-through holes, the second metal covering unit is electrically connected with the 3rd metal covering unit by the plated-through hole
Connect.
Further, the second reference ground unit also includes the 4th metal covering unit, the 4th metal covering unit position
Side in described feeder line one end, and on the bearing of trend of the feeder line, the first metal covering unit and the described 4th
Metal covering unit is electrically connected by the plated-through hole.
Further, the resonance band of the Super-material antenna at least includes 2.4GHz-2.49GHz and 5.72GHz-
5.85GHz。
For compared with the prior art, camera of the invention is used built in Super-material antenna, but based on Super-material antenna
Technology design is sent as an envoy to a wave band, the Super-material antenna of the electromagnetism wave resonance of two or more different-waveband, determines the antenna
The physical size of the metal structure size of volume is not limited by the physical length of half-wavelength, can be set according to camera size itself
Corresponding antenna is counted out, wireless telecommunications system miniaturization, the demand of built-in antenna is met.Furthermore it is possible to realize but above-mentioned nothing
Video/audio signal high speed, ultra wide band, Large Copacity are sent in computer storage equipment by line mode, and reduction camera uses wired side
Formula transmits the cost of signal.
Brief description of the drawings
Fig. 1 is the module map of camera；
Fig. 2 is the front view of the antenna first embodiment in camera of the present invention；
Fig. 3 is antenna rearview shown in Fig. 2；
Fig. 4 is the antenna first embodiment S parameter analogous diagram of the present invention；
Fig. 5 is the front view of the antenna second embodiment in camera of the present invention；
Fig. 6 is the front view of the embodiment of antenna the 3rd in camera of the present invention；
Fig. 7 is the metal structure enlarged drawing in second and third embodiment of inventive antenna；
Fig. 8 is the antenna first embodiment S parameter analogous diagram of the present invention；
Fig. 9 be second and third of the invention embodiment operate in 2.4,2.44,2.48GHz when E directions far field simulation result
Figure；
Figure 10 be second and third of the invention embodiment operate in 2.4,2.44,2.48GHz when H directions far field simulation result
Figure；
Figure 11 be second and third of the invention embodiment operate in 5.725,5.8,5.85GHz when E directions far field simulation result
Figure；
Figure 12 be second and third of the invention embodiment operate in 5.725,5.8,5.85GHz when H directions far field simulation result
Figure.
Embodiment
Camera of the present invention is further described with specific embodiment below in conjunction with the accompanying drawings.
Referring to Fig. 1, being the module map of the camera in the present invention.Camera 100 includes Super-material antenna 10, at signal
Manage module 11 and imaging sensor 12.Described image sensor 12 is used to absorb image information and is converted to electric signal；At signal
Reason module 11 is used to handle the electric signal and produces object information, and the Super-material antenna 10 is used to that described video and audio will to be included
Object information propagated with electromagnetic wave.In the present invention, the camera 100 includes but is not limited to monitoring camera, prison
Control device, high-definition camera, infrared monitoring camera etc..Video/audio signal is exported above by wireless mode, is greatly saved various
Video interface cost, so as to reduce the cost of camera wired mode access.
Antenna is formed based on artificial electromagnetic material Technology design in camera of the present invention, and artificial electromagnetic material refers to gold
Category piece engraves into the topological metal structure of given shape, and the topological metal structure of the given shape is arranged at into certain dielectric
The equivalent extraordinary electromagnetic material fabricated on constant and magnetic conductivity base material, its performance parameter depends primarily on its sub-wavelength
The topological metal structure of given shape.In resonance band, artificial electromagnetic material generally embodies the dispersion characteristics of height, changes speech
It, the impedance of antenna, holds perceptual, equivalent dielectric constant and magnetic conductivity as violent change can occur for frequency.It can thus adopt
Manually electromagnetic material technology is transformed the fundamental characteristics of above-mentioned antenna so that the medium substrate that metal structure is depended on it
A highly dispersed extraordinary electromagnetic material is equally constituted, so as to realize the abundant new antenna of radiation characteristic.It is detailed below
The thin several embodiments for introducing Super-material antenna 10 in application camera：
First embodiment
Also referring to Fig. 2 and Fig. 3, Super-material antenna 10 includes medium substrate 1, metal structure 2, feeder line 3 and reference ground
41st, 42, the medium substrate 1 is in rectangular tabular, and it can be by high molecular polymer, ceramics, ferroelectric material, ferrite material or ferromagnetic
The materials such as material are made.In the present embodiment, the material of the medium substrate 1 is made of glass material (FR4), thus not only
Cost is low, and can ensure to keep good antenna operating characteristics in different working frequencies.
The metal structure 2, feeder line 3 and reference ground 41,42 are respectively placed in the two relative surfaces of the medium substrate 1
On, the metal structure 2, feeder line 3 and reference ground 41,42 and the medium substrate 1 formation Super-material antenna, the Meta Materials day
The performance of line depends on the metal structure 2, and in resonance band, Meta Materials generally embody the dispersion characteristics of height, i.e., it hinders
Resist, hold perceptual, equivalent dielectric constant and magnetic conductivity as violent change can occur for frequency, thus by changing the metal
The fundamental characteristics of structure 2 and medium substrate 1, just causes the metal structure 2 equally to constitute one according to Lip river with medium substrate 1
Highly dispersed extraordinary electromagnetic material of human relations hereby 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, the gain of above-mentioned two frequency range is respectively up to 3.58dBi and 3.14dBi.It is understood that can set super
10 response frequencies of material antenna are 2.4GHZ~2.49GHZ frequency ranges, i.e. single-band antenna.
The feeder line 3 is arranged on the side of the metal structure 2, and extends along the length direction of the metal structure 2,
It intercouples with the metal structure 2, wherein, one end bending of the feeder line 3 extends to the end one of metal structure 2
Side.In addition, capacitive electrical element can be embedded in space as needed between the feeder line 3 and metal structure 2, pass through insertion
Capacitive electrical element regulation feeder line 3 is coupled with the signal between metal structure 2, by formula：Understand electric capacity
The size of value and working frequency square are inversely proportional, so when the working frequency of needs is relatively low working frequency, can pass through
It is appropriately embed the realization of capacitive electrical element.The capacitance value range of the capacitive electrical element of addition is usual between 0-2pF, but
As the embedded capacitance of the change of operating frequency of antenna may also exceed 0-2pF scope.
The reference ground 41,42 is located at the side of the feeder line 3, and make the feeder line 3 is located at the end of metal structure 2
One end formed microstrip line 31.In the present embodiment, the reference ground includes the first reference ground unit 41 and the second reference ground list
Member 42, the first reference ground unit 41 and the second reference ground unit 42 are respectively positioned at relative two surfaces of the medium substrate 1.
The first reference ground unit 41 is provided with the first metal covering unit 411 and the second metal covering unit 412 being electrically connected to each other.Institute
State the second reference ground unit 42 and be located at the same side of the medium substrate 1 with the feeder line 3, and be provided with the 3rd metal covering unit
421 and the 4th metal covering unit 422.
The first metal covering unit 411 is relative with the position of feeder line 3, and make the feeder line 3 is located at the metal knot
One end of the end of structure 2 forms the microstrip line 31, i.e., described reference ground is virtually.The second metal covering unit 412 and institute
State the position of the 3rd metal covering unit 421 relative.The 3rd metal covering unit 421 is located at one end of the metal structure 2, described
3rd metal covering unit 421 is in long side tabular, and identical with the bearing of trend of the feeder line 3.The medium substrate 1 is located at institute
State and some plated-through holes 5, second gold medal are offered at the second metal covering unit 412 and the 3rd metal covering unit 421
Category face unit 412 is electrically connected with the 3rd metal covering unit 421 by the plated-through hole 5.
The 4th metal covering unit 422 is located at the side of described one end of feeder line 3, and positioned at the extension side of the feeder line 3
Upwards.Offered if the medium substrate 1 is located at the first metal covering unit 411 and the 4th metal covering unit 422
Dry plated-through hole 5, the first metal covering unit 411 passes through the plated-through hole 5 with the 4th metal covering unit 422
Electrical connection.The microstrip line 31 is formed by one end of the first metal covering unit 411 and the feeder line 3, thus outside can be reduced
Signal is disturbed the signal transmitted on the feeder line 3, improves antenna gain, realizes preferable impedance matching, saves material, into
This is low.Set between the metal covering unit 422 of first metal covering unit 411 to the 4th by cleverly position, thus make institute
State reference ground and take less space, just realize larger area.In addition, by setting the plated-through hole 5, thus can enter
One step improves the area of the reference ground.
In summary, Super-material antenna 10 of the present invention is by critically controlling the topographic morphologies of metal structure 2 and being laid out institute
Microstrip line 31 is stated, effective dielectric constant and the magnetic conductivity distribution needed enables the antenna to realize preferably in working frequency range
Impedance matching, expeditiously complete energy conversion, and obtain preferable radiation pattern, it takes small volume, to environmental requirement
Low, high gain has a wide range of application, and is applicable the built-in or external antenna of camera.
Second embodiment
As shown in figure 5, the structural representation of the Super-material antenna 10 for the embodiment of the present invention.Meta Materials in the present embodiment
Antenna 10 include medium substrate 7 and be arranged on medium substrate 7 distributing point 5, be connected with the distributing point 5 feeder line 4, put down
The metal structure 6 of panel shape.Wherein, feeder line 4 intercouples with metal structure 6；Metal structure 6 is that sheet metal is opened up through engraving out groove
Flutter structure 61 to form, the corresponding material of groove topological structure 61 is removed when engraving, remaining sheet metal is metal structure 6, is being engraved
Carve after groove topological structure 61, the metal routing 62 being included in metal structure 6 is showed on sheet metal；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
It is 0.15mm；Medium substrate 7 can be made up of ceramic material, high polymer material, ferroelectric material, ferrite material or ferromagnetic material,
Preferably, it is made up of high polymer material, can is specifically FR-4, F4B Polymer material.
In the present embodiment, metal structure 6 is axisymmetric plane tabular.Wherein metal structure 6 is copper or ag material system
Into.Preferably copper, cheap, conducts electricity very well.In order to realize more preferable impedance matching, metal structure 6 or copper and silver-colored group
Close.
Referring to Fig. 6, being third embodiment of the invention front view, the 3rd embodiment is distinguished with second embodiment
In the through hole 81 for also including being provided with some metallization on ground unit 8, ground unit 8；Ground unit 8 is symmetrically distributed described
The both sides of distributing point 5, the selection of medium substrate 7 is same as Example 1.Fig. 7 show second embodiment and the 3rd embodiment
Metal structure enlarged drawing.It is to be understood that signal feed-in mode can have a variety of between feeder line 4 and metal structure 6.Institute
Feeder line 4 is stated directly with the metal structure 6 to be connected；And the feeder line 4 can be located at gold with the connecting point position that is connected of metal structure 6
Belong to the optional position in structure 6.The end that feeder line 4 is arranged at the periphery of metal structure 6 and feeder line 4 using encirclement mode is set
In the peripheral optional position of metal structure 6.
The present embodiment utilizes the characteristic of artificial electromagnetic material, by the way of metal structure is engraved on sheet metal, makes
The medium substrate for obtaining metal structure and being depended on metal structure collectively constitutes an effective dielectric constant according to Lorentz lorentz's material
The electromagnetic material of resonance model dispersion, so as to design the antenna of multi-resonant frequency range.In the present embodiment, second embodiment
Make two frequency range electromagnetism wave resonances of 2.4GHz-2.49GHz and 5.72GHz-5.85GHz with the antenna shown in the 3rd embodiment,
The length and width of metal structure 6 can do any adjustment according to communication apparatus organization distribution, but the planform of metal structure 6 is protected
Hold with it is consistent in the present embodiment, the unipole antenna can be used for single-frequency 2.4GHz-2.49GHz or 5.72GHz-5.85GHz
The communication apparatus of frequency range, can be used for the camera device of double frequency 2.4GHz-2.49GHz and 5.72GHz-5.85GHz frequency range.
The S parameter analogous diagram of second embodiment of the invention and the 3rd embodiment is illustrated in figure 8, the figure shows
The antenna of two embodiments and the 3rd embodiment has -15.426dB and -19.184dB respectively in 2.4GHz and 5.8018GHz
Loss, be respectively provided with 2.4GHz-2.49GHz and 5.72GHz-5.85GHz frequency bands of the presently claimed invention below -10dB
Loss, show that inventive antenna individually can work in 2.4GHz-2.49GHz or 5.72GHz-5.85GHz frequency bands,
It can work, and meet in camera to super material in 2.4GHz-2.49GHz and 5.72GHz-5.85GHz frequency bands simultaneously
Expect the requirement of antenna 10.
Fig. 9, Figure 10, Figure 11 and Figure 12 respectively illustrate second embodiment of the invention and the 3rd embodiment Meta Materials day
Line 10 operates in 2.4,2.44,2.48GHz and 5.725,5.8,5.85GHz when respectively in vertical plane (E-Plane) and level
Plane (H-Plane) direction far field simulation result figure, is able to observe that the polarization of the Super-material antenna of the present invention in this result
Effect, which is no less than existing antenna and met, applies standard.
In the present invention, on the processing and manufacturing of Super-material antenna 10, as long as meeting the design principle of the present invention, it can use
Various manufactures.Most common method is the manufacture method using all kinds of printed circuit board (PCB)s (PCB), such as covers the PCB manufactures of copper
The processing request of the present invention can be met.Except this processing mode, other manufacturing process can also be introduced according to the actual needs, such as
Conductive silver paste ink processing mode, it is all kinds of can the flexible PCB processing of deformable element, the processing mode of iron plate antenna and iron plate with
The processing mode of PCB combinations.Wherein, iron plate refers to the accurate processing using PCB to complete groove topology with PCB Combined machining modes
The processing of structure, other slave parts are completed with iron plate.Because the copper product using low cost forms the metal structure 6,
Therefore it is oxidized easily in exposure air and the resonance frequency shift of Super-material antenna 10 or performance is drastically declined, therefore monopole
Nonmetallic anti-oxidation film is provided with antenna surface.Opened up because the main performance of the present invention all concentrates on the groove of metal structure 6
The design of structure 61 is flutterred, therefore, the lead of feeder line 4 influences relatively small to the radiation frequency of Super-material antenna 10.Based on this
Feature, Super-material antenna 10 can be flexibly placed in any position of system, the complexity of the installation test simplified.
Embodiments of the invention are described above in conjunction with accompanying drawing, but the invention is not limited in above-mentioned specific
Embodiment, above-mentioned embodiment is only schematical, rather than restricted, one of ordinary skill in the art
Under the enlightenment of the present invention, in the case of present inventive concept and scope of the claimed protection is not departed from, it can also make a lot
Form, these are belonged within the protection of the present invention.
Claims (9)
1. a kind of camera, it is characterised in that including Super-material antenna, signal processing module and imaging sensor, the super material
Material antenna includes a medium substrate and is arranged at a distributing point on the surface of medium substrate one, is connected with the distributing point
Feeder line and a metal structure；The feeder line intercouples with the metal structure, and described image sensor is used to absorb image letter
Cease and be converted to electric signal；Signal processing module is used to handle the electric signal and produces object information, the Super-material antenna
For the object information comprising video and audio to be propagated with electromagnetic wave；
Wherein, the Super-material antenna also includes a reference ground, and the reference ground includes being located at the medium substrate with respect to two tables
The first reference ground unit and the second reference ground unit on face, the first reference ground unit are provided with first be electrically connected to each other
Metal covering unit and the second metal covering unit, the second reference ground unit include spaced and the of unsymmetric structure each other
Three metal covering units and the 4th metal covering unit, the 3rd metal covering unit be located at the metal structure one end and with it is described
The bearing of trend of feeder line is identical, and the 4th metal covering unit is located at the side of described feeder line one end and prolonging positioned at the feeder line
Stretch on direction.
2. camera according to claim 1, it is characterised in that the metal structure is sheet metal through engraving out groove topology
Structure is formed.
3. camera according to claim 1, it is characterised in that the first reference ground unit makes one end of the feeder line
Form microstrip line.
4. camera according to claim 3, it is characterised in that：The first reference ground unit and the second reference ground unit
It is electrically connected to each other.
5. camera according to claim 4, it is characterised in that：The medium substrate is provided with some plated-through holes,
The first reference ground unit is realized by the plated-through hole with the second reference ground unit and electrically connected.
6. camera according to claim 3, it is characterised in that：One end of the first metal covering unit and the feeder line
Position is relative, one end of the feeder line is formed the microstrip line；The 3rd metal covering unit and the second metal covering list
First position is relative.
7. camera according to claim 6, it is characterised in that：The medium substrate is located at the second metal covering unit
And some plated-through holes, the second metal covering unit and the 3rd metal covering are offered at the 3rd metal covering unit
Unit is electrically connected by the plated-through hole.
8. camera according to claim 6, it is characterised in that：The first metal covering unit and the 4th metal covering
Unit is electrically connected by the plated-through hole.
9. the camera according to claim any one of 1-8, it is characterised in that the resonance band of the Super-material antenna is extremely
Include 2.4GHz-2.49GHz and 5.72GHz-5.85GHz less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110295936.8A CN103037142B (en) | 2011-09-30 | 2011-09-30 | Camera |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110295936.8A CN103037142B (en) | 2011-09-30 | 2011-09-30 | Camera |
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| Publication Number | Publication Date |
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| CN103037142A CN103037142A (en) | 2013-04-10 |
| CN103037142B true CN103037142B (en) | 2017-11-07 |
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| CN201110295936.8A Expired - Fee Related CN103037142B (en) | 2011-09-30 | 2011-09-30 | Camera |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10379217B2 (en) | 2013-11-21 | 2019-08-13 | Sony Corporation | Surveillance apparatus having an optical camera and a radar sensor |
| CN112615991A (en) * | 2020-12-17 | 2021-04-06 | 上海闻泰信息技术有限公司 | Wireless camera, electronic equipment and shooting method |
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| US6567055B1 (en) * | 2001-05-01 | 2003-05-20 | Rockwell Collins, Inc. | Method and system for generating a balanced feed for RF circuit |
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| CN102197640A (en) * | 2008-10-22 | 2011-09-21 | 佳能株式会社 | Image sensor and image sensing apparatus |
| CN101667680A (en) * | 2009-08-31 | 2010-03-10 | 深圳市启汉科技有限公司 | Monopole radio frequency antenna |
| CN101895010A (en) * | 2010-06-13 | 2010-11-24 | 南京邮电大学 | Coplanar waveguide feed wideband printed monopole antenna |
| CN202275942U (en) * | 2011-09-30 | 2012-06-13 | 深圳光启高等理工研究院 | Camera |
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