CN201491182U - Double-strand transmission camera - Google Patents
Double-strand transmission camera Download PDFInfo
- Publication number
- CN201491182U CN201491182U CN2009202042624U CN200920204262U CN201491182U CN 201491182 U CN201491182 U CN 201491182U CN 2009202042624 U CN2009202042624 U CN 2009202042624U CN 200920204262 U CN200920204262 U CN 200920204262U CN 201491182 U CN201491182 U CN 201491182U
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- twisted
- pair feeder
- camera
- main board
- transmission
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- Expired - Fee Related
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Abstract
The utility model relates to a double-strand transmission camera which comprises a camera body, a circuit main board, a lens, a differential transmission converter and a double-strand interface; the circuit main board is arranged in the inner space of the camera body; the lens is inlaid in the camera body; the double-strand interface is arranged outside the camera body; the differential transmission converter is electrically connected with the circuit main board, and is further connected with two external strands through the double-strand interface. The double-strand transmission camera has the advantages of convenient wiring, high utilization rate of wires and cables, easier laying than coaxial cables, far transmission distance, high transmission quality, basically no distortion of image signals, strong anti-interference capability, high reliability, low price, simple use, no need of professional knowledge, once installation, stable work for a long time and low transmission cost, and can save more than 80 percent of cost when the transmission distance is about 400m or 500m to 1.5km.
Description
Technical field
The utility model relates to a kind of camera, relates in particular to a kind of camera that utilizes the twisted-pair feeder transmission.
Background technology
In traditional camera head monitor network, adopt the coaxial cable transmission video signal, this transmission means just is used for 300 meters with interior signal transmission, for the signal of distance above 300 meters, adopt the coaxial cable transmission video signal not only overall magnitude decayed, and each frequency component attenuation differs greatly, particularly the color maximum that partly decays, and in extensive intensive monitor network, adopt the coaxial cable transmission wiring comparatively to bother.
In order to overcome the problems referred to above, there is the optical fiber of employing to come signal is transmitted at present, yet optical fiber integrally transmission system price is too high, optical fibre installation, Installation and Debugging difficulty, the fault difficulty is looked for, damage not easy-maintaining, and for 2000 meters for interior closely video transmission, optical fiber is not one and well selects.Therefore, it is very necessary to seek the solution of a kind of economy, transmission quality height, long transmission distance.
The utility model content
The purpose of this utility model is, a kind of twisted-pair feeder transmission camera is provided, solve traditional camera and adopt coaxial cable transmission wiring difficulty, transmission range is near, poor transmission, and the cable utilance is not high, the problem that antijamming capability is weak, avoided employing Optical Fiber Transmission cost height simultaneously, the Installation and Debugging difficulty, the fault difficulty is looked for, and damages the not drawback of easy-maintaining.
For achieving the above object, twisted-pair feeder of the present utility model transmission camera comprises: camera body, circuit main board, camera lens, differential transfer converter, an and twisted-pair feeder interface; Described circuit main board is located at the body interior space, and camera lens is embedded on this body, and the twisted-pair feeder interface is located at this body exterior, and described differential transfer converter and circuit main board electrically connect, and it further links to each other with external twisted-pair feeder by the twisted-pair feeder interface.
Be provided with vision signal transtation mission circuit and video reception circuit in the described differential transfer converter.
In every line of described twisted-pair feeder 8 cores are arranged.
Described twisted-pair feeder is non-shielding, fine copper core, the twisted-pair feeder of five classes or above standard.
Be connected with the filter system that day and night automaticallyes switch on the described circuit main board, this filter system that day and night automaticallyes switch is provided with between one day filter disc and filter disc in one night, and this filter disc is provided with respect to described camera lens front end.
Be provided with light-inductive circuit and automatic switch-over circuit in the described filter system that day and night automaticallyes switch, this automatic switch-over circuit and circuit main board electrically connect.
Be electrically connected with two voltage input modules on the described circuit main board, this pair voltage input module correspondence is provided with two voltage input end mouths.
Described pair of voltage input end mouth is located at the camera body exterior, the external interchange of this port 24V voltage or direct current 12V voltage.
The beneficial effects of the utility model: twisted-pair feeder transmission camera of the present utility model, wiring is convenient, and cable utilance height lays than coaxial cable is better; Its long transmission distance, transmission quality height, picture signal is undistorted substantially; It has the strong characteristics of antijamming capability simultaneously, can effectively suppress common mode disturbances, uses several in five cables that twisted-pair feeder is transmitted different signals respectively, can not disturb the bar strand interference phenomenon in the time of the power line wiring can not occurring each other.This twisted-pair feeder transmission camera reliability height, low price, use simple, need not professional knowledge, once mounting, long-term stable operation, its transmission cost is low, transmission range is when four, 500 meters to the 1.5 kilometers left and right sides, and twisted-pair feeder can be brought into play fabulous performance and price advantage undoubtedly, can save cost more than 80%.Simultaneously, this camera has and day and night switches filter disc, have the automatic mode handoff functionality, can automatically switch in the daytime or Night, can reach color rendition, selectivity printing opacity, in darker environment, improve picture brightness to obtain the purpose of image quality better image.In addition, the utility model camera is also supported the duplicate supply input mode, its highly versatile, the selection of convenient different supply power modes.
In order further to understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, yet accompanying drawing only provide with reference to and the explanation usefulness, be not to be used for the utility model is limited.
Description of drawings
Below in conjunction with accompanying drawing,, will make the technical solution of the utility model and other beneficial effect apparent by embodiment of the present utility model is described in detail.
Fig. 1 is the structural representation of the utility model twisted-pair feeder camera.
Embodiment
For further setting forth technological means and the effect thereof that the utility model is taked, be described in detail below in conjunction with preferred embodiment of the present utility model and accompanying drawing thereof.
As shown in Figure 1, twisted-pair feeder of the present utility model transmission camera comprises: camera body 1, circuit main board 2, camera lens 3, differential transfer converter 4, an and twisted-pair feeder interface 5; Described circuit main board 2 is located at body 1 inner space, and camera lens 3 is embedded on this body 1, and twisted-pair feeder interface 5 is located at this body 1 outside, and described differential transfer converter 4 electrically connects with circuit main board 3, and it further links to each other with external twisted-pair feeder by twisted-pair feeder interface 5.
Further, be provided with vision signal transtation mission circuit and video reception circuit in the described differential transfer converter 4.Utilize the differential transfer principle, this differential transfer transducer 4 equates the conventional video signals that spreads out of on the circuit main board 2 amplitude that is transformed into, opposite polarity vision signal, transfer out through twisted-pair feeder by the vision signal transtation mission circuit, again two opposite polarity vision signals are subtracted each other through the video reception circuit at receiving terminal and to become traditional vision signal, this process can effectively suppress common mode disturbances, even under strong interference environment, its antijamming capability is good more than coaxial cable, same netting twine can not disturb each other, and adopt the twisted-pair feeder transmission means, it connects up convenient, long transmission distance, the transmission quality height, cable utilance height.
This twisted-pair feeder camera is very important for the selection of twisted-pair feeder, as a kind of selectivity embodiment, we select for use 8 cores in the every line, the dc resistance of every core should be less than 15 Europe/100 meter (GB less than 10 Europe/100 meter), it should be noted that especially palm fibre in the netting twine, palm fibre are in vain to line and indigo plant, blue in vain to the resistance of line.Described twisted-pair feeder is non-shielding, fine copper core, the twisted-pair feeder of five classes or above standard.
As a kind of selectivity embodiment of the present utility model, on described circuit main board 2, be connected with the filter system 6 that day and night automaticallyes switch, this filter system 6 that day and night automaticallyes switch is provided with between one day filter disc and filter disc (not shown) in one night, and this filter disc is with respect to described camera lens 3 front end settings.Be provided with light-inductive circuit and automatic switch-over circuit in the described automatic switchover filter system 6, this automatic switch-over circuit and circuit main board 2 electrically connect.This light-inductive circuit is the induction light line strength at any time, judges that this moment, light intensity belonged in the daytime or Night, and automatic switch-over circuit is according to the judgement of light-inductive circuit, carries out in the daytime automatically or the switching of Night.If the light-inductive circuit inductance is higher than a certain scope to light intensity, this moment, light intensity belonged to a day inter mode, then automatic switch-over circuit between controll day filter disc block front end at camera lens 3, the non-visible light of this filter disc filtering in the daytime from the light of camera lens 3 transmissions, the colour cast of avoiding non-visible light to produce is to obtain the image quality better image; If the light-inductive circuit inductance to light intensity be lower than a certain scope, this moment, light intensity belonged to Night, then automatic switch-over circuit control filter disc at night blocks the front end at camera lens 3, this filter disc permission at night infrared light sees through, utilize the near infrared ray imaging, be implemented in night light than the purpose that still can obtain in the dark situation than picture rich in detail.In the present embodiment, described camera lens 3 can adopt automatic diaphragm lens.This automatic diaphragm lens has adopted up-to-date optical design method and special advanced technologies such as optical glass material, has eliminated the focal plane shift of visible light and infrared light.Therefore the light from visible region to the infrared light district can be realized sharp keen image in the imaging of same position of focal plane.And need not focus again after its disposable setting, more convenient to use easy to operate.When camera lens is installed under possible condition, consider that installation is not less than 1/2 inch camera lens, image can not produce dark angle so on the one hand, on the other hand, can strengthen photosensitive area and promote the effect at night, in order to avoid adopt little size camera lens to cause unnecessary waste.
As another kind of selectivity embodiment of the present utility model, on described circuit main board 2, be electrically connected with two voltage input modules 7, this pair voltage input module 7 correspondences are provided with two voltage input end mouths 8.This pair voltage input end mouth 8 is located at camera body 1 outside, can external interchange 24V voltage or direct current 12V voltage by this port.Owing to adopt the dual power supply pattern of supporting, can select suitable power supply easily, when a kind of power supply power supply is broken down, can use another kind of power supply power supply instead, its versatility is stronger, and can 24 hours uninterrupted power supplies, guarantee this camera can have a power failure or outdoor non-transformer situation under continue operate as normal.
In sum, the twisted-pair feeder camera that the utility model provides, it is mainly used in building supervisory control system, power monitoring, cell monitoring, the complex environment monitoring center monitoring as telecommunication bureau.This twisted-pair feeder transmission camera, long transmission distance, transmission quality height, wiring is convenient, cable utilance height, and antijamming capability is strong, can effectively suppress common mode disturbances, even under strong interference environment, twisted-pair feeder also can transmit fabulous picture signal.And, use several in five cables that twisted-pair feeder is transmitted different signals respectively, can not disturb the bar strand interference phenomenon in the time of the power line wiring can not occurring each other.It has reliability height, characteristics such as easy to use simultaneously, on the one hand, it has solved the problem of high-quality image signal transmission in 300 meters to the 1500 meters distance ranges, on the other hand, it has solved the wiring problem of extensive intensive monitor network, the wiring difficult problem when size of twisted-pair feeder self and flexibility have overcome a large amount of use coaxial cable can be saved cost more than 80%.Simultaneously, this camera has and day and night switches filter disc, have the automatic mode handoff functionality, can automatically switch in the daytime or Night, can reach color rendition, selectivity printing opacity, in darker environment, improve picture brightness to obtain the purpose of image quality better image.In addition, the utility model camera is also supported the duplicate supply input mode, its highly versatile, the selection of convenient different supply power modes.
The above; for the person of ordinary skill of the art; can make other various corresponding changes and distortion according to the technical solution of the utility model and technical conceive, and all these changes and distortion all should belong to the protection range of the utility model accompanying Claim.
Claims (8)
1. a twisted-pair feeder transmission camera is characterized in that, comprises camera body, circuit main board, camera lens, differential transfer converter, reaches a twisted-pair feeder interface; Described circuit main board is located at the body interior space, and camera lens is embedded on this body, and the twisted-pair feeder interface is located at this body exterior, and described differential transfer converter and circuit main board electrically connect, and it further links to each other with external twisted-pair feeder by the twisted-pair feeder interface.
2. twisted-pair feeder transmission camera as claimed in claim 1 is characterized in that, is provided with vision signal transtation mission circuit and video reception circuit in the described differential transfer converter.
3. twisted-pair feeder transmission camera as claimed in claim 1 is characterized in that in every line of described twisted-pair feeder 8 cores being arranged.
4. twisted-pair feeder transmission camera as claimed in claim 1 is characterized in that described twisted-pair feeder is non-shielding, fine copper core, the twisted-pair feeder of five classes or above standard.
5. twisted-pair feeder transmission camera as claimed in claim 1, it is characterized in that, be connected with the filter system that day and night automaticallyes switch on the described circuit main board, this filter system that day and night automaticallyes switch is provided with between one day filter disc and filter disc in one night, and this filter disc is provided with respect to described camera lens front end.
6. twisted-pair feeder transmission camera as claimed in claim 5 is characterized in that be provided with light-inductive circuit and automatic switch-over circuit in the described filter system that day and night automaticallyes switch, this automatic switch-over circuit and circuit main board electrically connect.
7. twisted-pair feeder transmission camera as claimed in claim 1 is characterized in that be electrically connected with two voltage input modules on the described circuit main board, this pair voltage input module correspondence is provided with two voltage input end mouths.
8. twisted-pair feeder transmission camera as claimed in claim 7 is characterized in that described pair of voltage input end mouth is located at the camera body exterior, the external interchange of this port 24V voltage or direct current 12V voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202042624U CN201491182U (en) | 2009-08-24 | 2009-08-24 | Double-strand transmission camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202042624U CN201491182U (en) | 2009-08-24 | 2009-08-24 | Double-strand transmission camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201491182U true CN201491182U (en) | 2010-05-26 |
Family
ID=42430047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202042624U Expired - Fee Related CN201491182U (en) | 2009-08-24 | 2009-08-24 | Double-strand transmission camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201491182U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102006463A (en) * | 2010-11-29 | 2011-04-06 | 深圳市泛海三江电子有限公司 | Hard disk camera system |
| CN109672859A (en) * | 2018-12-13 | 2019-04-23 | 中国航空工业集团公司上海航空测控技术研究所 | A kind of analog video monitoring system for civil aircraft |
-
2009
- 2009-08-24 CN CN2009202042624U patent/CN201491182U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102006463A (en) * | 2010-11-29 | 2011-04-06 | 深圳市泛海三江电子有限公司 | Hard disk camera system |
| CN109672859A (en) * | 2018-12-13 | 2019-04-23 | 中国航空工业集团公司上海航空测控技术研究所 | A kind of analog video monitoring system for civil aircraft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20150824 |
|
| EXPY | Termination of patent right or utility model |