CN101982942B - A kind of high speed optical data transmission system between rotary body and fixed body - Google Patents
A kind of high speed optical data transmission system between rotary body and fixed body Download PDFInfo
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- CN101982942B CN101982942B CN201010283499.3A CN201010283499A CN101982942B CN 101982942 B CN101982942 B CN 101982942B CN 201010283499 A CN201010283499 A CN 201010283499A CN 101982942 B CN101982942 B CN 101982942B
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- rotary body
- discharger
- data transmission
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- curvilinear guide
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 31
- 230000003287 optical Effects 0.000 title claims abstract description 21
- 239000000835 fiber Substances 0.000 claims abstract description 63
- 238000004891 communication Methods 0.000 claims abstract description 9
- 239000003365 glass fiber Substances 0.000 claims description 32
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000001360 synchronised Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 230000001808 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000243 photosynthetic Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Abstract
A kind of high speed fibre data transmission system between rotary body and fixed body, this system is based on Fibre Optical Communication Technology, be applicable to the slip ring system of industry CT, high-end safety check instrument or Medical CT, to realize being transferred on fixed body the detection data high-speed on rotary body highly reliably, this system includes the data acquisition unit being arranged on rotary body, discharger, fiber optic collimator mirror, curvilinear guide, slide block, reception device, fibre-coupled mirrors and the fiber rotation connector being arranged on fixed body and optical combiner.Owing to the present invention uses fiber optic communication to realize the high-speed transfer of data, transfer rate is high, the bit error rate is low and capacity of resisting disturbance is strong, meets the requirement of big data quantity high-speed transfer in industry CT, high-end safety check instrument or Medical CT.
Description
Technical field
The present invention relates to the high speed data transmission system between a kind of rotary body based on fiber optic communication and fixed body, particularly relate to fit
The high speed data transmission system between rotary body and fixed body in industrial CT system, safety check instrument and Medical CT system.
Background technology
In industrial technical field, a lot of application scenario is had to need in the data information transfer on rotary body to fixed body, typical
Application as in industrial CT system, safety check instrument and Medical CT system, when checked object is detected, need in real time
The high speed information detected on rotary body is transferred on fixed body with high reliability.Initial data transmission system is to pass through brush
Realize with the mode of conducting ring, but due to rotary body when rotated contact resistance value between brush and conducting ring constantly
Change, this change can produce the biggest signal noise, thus reduce the reliability of data transmission, therefore can not be used for transmitting
High-speed data signal.Particularly under environment under high pressure, the high-voltage noise that the electrion between rotary body and fixed body causes is bigger.
Further, since the contact friction between carbon brush and slip ring, also have impact on the service life of data transmission system.
Along with the high-speed industrial CT system and Medical CT system with multiple rows of x-ray detector is used widely in actually detected,
The detection data that system collected within the unit interval are greatly increased, and use the mode that carbon brush contacts with slip ring to realize data transmission
It is more and more unreliable and preferable.Therefore, industry proposes and replaces above-mentioned carbon brush sliding by wireless capacity coupled mode
Ring mode, but wireless capacity coupled electromagnetic field is easier to be disturbed by external voltage, electric current and electromagnetic field, the highest
Accuracy and the transfer rate of speed data transmission are restricted and affect.
In order to solve above-mentioned problem, industry also proposed optically-based signal transmission system, as in Publication No. CN
In the patent application of 101006925A, disclose a kind of data transmission system based on optical fiber, wherein, on rotary body circumferentially
Several Electrical-to-opticaconversion conversion component (such as laser diode) and condenser lens are fixed as signal emission part in direction, on fixed body
The fibre bundle of peripherally disposed one section of finite length receives the optical signal of emitting portion transmitting and is sent to photoelectric conversion element
Part, it is ensured that in real work, the light beam that the most a branch of emitting portion is launched can fall on the fibre bundle on fixed body.?
In the patent application of Publication No. CN 1989905A, also disclose a kind of data transmission system based on optical fiber, with CN
Unlike 101006925A, this patent application is only provided with on rotary body an Electrical-to-opticaconversion conversion component (such as laser two pole
Pipe) and condenser lens as signal emission part, fixed body is along the circumferential direction covered with optical fiber to receive the optical signal of transmitting also
It is sent to photo-electric conversion element.But above-mentioned both systems all have employed more laser instrument or optical fiber, relatively costly, practicality
It is restricted.
In the patent application of Publication No. CN101794504A, disclose a kind of data transmission system based on fiber optic communication, its
Drive Timing Belt to rotate by the belt wheel on rotary body, belt wheel is spaced 180 degree two laser alignment mirrors are set, at Timing Belt
On three laser alignment mirrors are set at equal intervals, the length of Timing Belt is 1.5 times of belt wheel girth, and Timing Belt engages 180 with belt wheel
Degree, it is ensured that any time has a pair laser alignment mirror to be to cooperate with relative, thus passes the laser data on rotary body belt wheel
It is passed in the optical fiber on Timing Belt.In fact, the most a lot of modes are capable of above-mentioned functions, as first-class of belt wheel
Away from arranging three laser alignment mirrors, on Timing Belt, also three laser alignment mirrors of spaced set, the length of Timing Belt and belt wheel are all
Long equal, Timing Belt engages 120 degree with belt wheel, the most equally ensures that any time has a pair laser alignment mirror to be to cooperate with
Relative, just by the optical fiber on the laser data transmission on rotary body belt wheel to Timing Belt.Also have a variety of such sides of setting
Formula, just differs at this and one lists.
Summary of the invention
It is an object of the invention to provide a kind of based on fiber optic communication for the high speed high reliability number between rotary body and fixed body
According to transmission system, it is particularly suited in the slip ring system of industry CT, safety check instrument and Medical CT, to realize the inspection on rotary body
Surveying data high-speed to be transferred to highly reliably on fixed body, this high speed high reliability data transmission system includes: data acquisition unit,
It is arranged on rotary body；Discharger, it is arranged on rotary body；Fiber optic collimator mirror, it is arranged in discharger；Bent
Line guide rail and slide block, wherein curvilinear guide is arranged on fixed body, and slide block is arranged on curvilinear guide；Receiving device, it is arranged
On slide block；Fibre-coupled mirrors, it is arranged in reception device；Fiber rotation connector, it is arranged on fixed body；Photosynthetic
Road device, it is arranged on fixed body；In rotary body rotary course, at least a pair discharger is relative with receiving device or nibbles
Close so that at least a pair fiber optic collimator mirror is relative with fibre-coupled mirrors or engages.
Analog electrical signal is converted to digital electric signal and this digital electric signal is converted to digital light letter by data acquisition unit therein
Number, transferred out by optical fiber.Discharger at least two therein, the center of discharger to rotary body is the most equal.
Curvilinear guide therein is to close, and some curvilinear guide is with rotary body center as the center of circle, and discharger is to this center
A part of circumference of circumference of being formed by radius of distance overlapping, the arc length of this lap more than or equal on this circumference arbitrarily
Arc length between two adjacent transmission devices.Curvilinear guide therein is to close, and some curvilinear guide is close to rotate
Body center is the center of circle, the outside of a part of circumference of the circumference that the distance of discharger to this center is formed by radius, this part
The angle that curvilinear guide and rotary body center are formed is more than or equal to any two adjacent transmission device on this circumference and rotary body circle
The angle being formed centrally.Reception device therein is arranged on curvilinear guide, and receive between device with steel wire tight be connected to.
Fiber rotation connector therein is positioned at the centre of the surrounded shape of curvilinear guide.Discharger therein has convex cone structure.
Reception device therein has concave cone structure, and its cone angle is equal with the cone angle of the convex cone of discharger, receives device and transmitting
Device can be at a fully engaged.
Light in optical fiber can be collimated into directional light to spatial emission by fiber optic collimator mirror, and fibre-coupled mirrors can parallel by space
Light focuses in optical fiber, in the optical transport in the optical fiber that fiber rotation connector can will rotate to fixing optical fiber.
Accompanying drawing explanation
Fig. 1 is the principle schematic of the data transmission system in the embodiment according to present invention proposition；
Fig. 2 is the profile of the discharger in the embodiment according to present invention proposition；
Fig. 3 is the slide block in the embodiment according to present invention proposition and the profile receiving device.
Detailed description of the invention
As it is shown in figure 1, optical fiber data transmission system proposed by the invention includes rotary body 110, data acquisition unit 140, send out
Injection device 150, fiber optic collimator mirror 160, fibre-coupled mirrors 170, reception device 180, slide block 190, curvilinear guide 200, Gu
Determine body 210, fiber rotation connector 220 and optical combiner 230.Wherein, data acquisition unit 140, discharger 150,
Fiber optic collimator mirror 160 is all arranged on rotary body 110, and rotary body 110 is a disk-like object, X-ray discharger 120 and X
Optical pickup apparatus 130 is also mounted on rotary body 110；Curvilinear guide 200, fiber rotation connector 220 and optical combiner 230
All being arranged on fixed body 210, slide block 190 is arranged on curvilinear guide 200, receives device 180 and is arranged on slide block 190,
Fibre-coupled mirrors 170 is arranged in reception device 180, and the outermost fine rule of fixed body 210 represents the framework of fixed body 210.
During the scanning of CT system, rotary body 110 is rotated by driven by motor, is shown without motor in FIG, and X-ray is sent out
Injection device 120 is persistently launched X-ray and rotates with rotary body 110, and described X-ray is placed through this X-ray discharger 120 He
X-ray receives the checked object between device 130 and is received received by device 130 by X-ray, and X-ray receives device 130 can be by
The energy of the X-ray received is converted to analog electrical signal, and this X-ray receives the X-ray detection that device 130 can be single row or multiple rows
Device array.
This X-ray receives device 130 and is connected with data acquisition unit 140, and the analog electrical signal detected is sent to this data
Harvester 140, is converted into digital electric signal after analog digital conversion and corresponding data process, in high speed CT system, and number
Typically also include electrooptic switching element 141 according to harvester 140, digital electric signal is converted to digital optical signal and passes through optical fiber
It is transferred to fiber optic collimator mirror 160.In actual system, data acquisition unit 140 is by optical fiber splitter and all of optical fiber
Collimating mirror 160 is connected.
Discharger 150 is fixed on the circumference of rotary body 110, and fiber optic collimator mirror 160 is arranged in discharger 150, edge
The radial emission laser signal of rotary body 110, selects 2 discharger 150A and 150B, is spaced 180 degree in the present embodiment
Install.Fig. 2 is the discharger sectional view along vertical paper direction, and discharger has convex cone body structure.Curvilinear guide 200
Being arranged on fixed body, Fig. 3 is slide block and receives the device sectional view along vertical paper direction, receives device and is fixed on slide block.
The length of curvilinear guide 200 is 1.5 times of rotary body 110 girth, equidistantly installs 3 and receive dress on curvilinear guide 200
Put 180A, 180B and 180C, these three receive between device be with the preferable steel wire of rigidity tight be connected to, or use other
Material line connect receive device.As it is shown on figure 3, fibre-coupled mirrors 170 is fixedly mounted in reception device 180, receive
Device 180 has concave cone body structure, and its cone angle is equal with the cone angle of the convex cone of discharger, in actual motion, and convex cone
Body and concave cone are meshed completely.As it is shown in figure 1, receive device 180A and 180B respectively with discharger 150A and
150B relatively and engages, and at this moment fiber optic collimator mirror 160A, 160B are relative with fibre-coupled mirrors 170A, 170B respectively, thus can
To carry out optical transport, it is achieved high speed optical communication.Fiber optic collimator mirror 160A, 160B are separately mounted to discharger 150A and 150B
In, as shown in Figure 2, fibre-coupled mirrors 170A, 170B and 170C are separately mounted to receive device 180A, 180B and 180C
In, as shown in Figure 3.When rotary body 110 rotates, the discharger 150 being fixed on rotary body 110 also rotates with,
Owing to discharger with engaging of receiving device cone thus drives reception device 180 to rotate, thus band movable slider 190 is at curve
Slide on guide rail 200.So it is rotated clockwise to discharger 150B institute from the position shown in Fig. 1 as discharger 150A
Position during, receive device 180A also from the position shown in Fig. 1 to receive device 180B place position
Rotate counterclockwise, and in rotary course, remain that fiber optic collimator mirror 160A is relative with fibre-coupled mirrors 170A, thus
Ensure that the laser signal that fiber optic collimator mirror 160A launches can be got by fibre-coupled mirrors 170A completely.
When discharger 150A dextrorotation turnback, discharger 150B also dextrorotation turnback, at this moment, connect
Receiving apparatus 180A rotates counterclockwise to the position at 180B place, and 180C rotates counterclockwise to the position at 180A place, and
Relative with discharger 150B and engage, such discharger replaces the most relative engagement with receiving device, thus realizes optic communication not
Intermittently communicating.
Light in optical fiber can be collimated into directional light to spatial emission by fiber optic collimator mirror 160, and fibre-coupled mirrors 170 can be by sky
Between parallel light focusing in optical fiber, the optical transport in the optical fiber that fiber rotation connector 220 can rotate is to the optical fiber fixed
In, using triple channel fiber rotation connector in the present invention, fiber rotation connector is positioned at the surrounded shape of curvilinear guide
Centre, can arrange a rotating mechanism make the round end of fiber rotation connector with slide block synchronous rotary, by fiber spinning even
Three the fixing optical-fibre channels connecing device are connected on three-in-one optical combiner 230, synthesize a road optical fiber output, output to image
In processing means.
Close it is further preferred that the optical fiber of fibre-coupled mirrors 170A, 170B and 170C can be all connected to three-in-one optical fiber
On the input of road Qi tri-road, when fibre-coupled mirrors 170A, 170B and 170C rotate, it is ensured that optical fiber combiner also synchronizes rotation
Turn, then by optical fiber, No. one outfan of optical fiber combiner be connected to the round end of a single pass fiber rotation connector,
And ensure the round end of fiber rotation connector and optical fiber combiner synchronous rotary, thus can revolve with a single pass optical fiber
Turn adapter to replace three-channel fiber rotation connector, thus reduce the cost of product.
In the present invention, the number of discharger 150 and fiber optic collimator mirror 160 is preferably 2, receives device 180 and optical fiber
The number of coupling mirror 170 is preferably 3, but can arrange the discharger of any number, fiber optic collimator according to the actual needs
Mirror, fibre-coupled mirrors and reception device.The most as shown in Figure 4, two sections of curvilinear guide 200A and 200B symmetry peace can be set
Dress, 3/4ths of a length of rotary body girth of these two sections of curvilinear guides, two discharger 90 degree of installations in interval, use two
Individual discharger and six methods receiving device 180A, 180B, 180C, 180D, 180E and 180F alternately engagement realize
Continual optic communication.Optical transport in the optical fiber of rotation is arrived by fiber rotation connector 220A and fiber rotation connector 220B
In fixing optical fiber, finally the light that goes out of two three-in-one optical combiner 230A and 230B is passed through a two-in-one optical combiner
240 by optical signal transmission to image processing apparatus.
Discharger has convex cone body structure, at least two, is arranged on this rotary body, and is separated by certain angle.Though
Curvilinear guide length in right embodiments of the invention is 1.5 times of rotary body girth, but is not limited thereto, art technology
Personnel can use the curvilinear guide of the length of any present invention of being capable of to realize the present invention.
Although the discharger in embodiments of the invention has convex cone structure, receiving device and have concave cone structure, they can
With at a fully engaged, thus ensure that the fiber optic collimator mirror that is arranged in them and fibre-coupled mirrors are fully aligned but it also may use it
It can realize fiber optic collimator mirror and fibre-coupled mirrors completely to straight structure to realize the present invention, even in the essence of frame for movement
Under degree guaranteed conditions, discharger and receive device not in contact with, but at intervals, by discharger and reception
The load carrier of device ensures to be in alignment with between them.
Claims (7)
1. the data transmission system between a rotary body based on fiber optic communication and fixed body, it is characterised in that including:
Data acquisition unit, it is arranged on rotary body；
Discharger, it is arranged on rotary body；
Fiber optic collimator mirror, it is arranged in discharger；
Curvilinear guide and slide block, wherein curvilinear guide is arranged on fixed body, and slide block is arranged on curvilinear guide；
Receiving device, it is arranged on slide block；
Fibre-coupled mirrors, it is arranged in reception device；
Fiber rotation connector, it is arranged on fixed body；
Optical combiner, it is arranged on fixed body；
Described discharger has convex cone structure, and described reception device has a concave cone structure, and its cone angle and described transmitting
The cone angle of the convex cone of device is equal, in rotary body rotary course, and at least discharger described in a pair and described reception device
At a fully engaged.
2. data transmission system as described in claim 1, analog electrical signal is converted to digital telecommunication by data acquisition unit therein
Number and this digital electric signal is converted to digital optical signal, transferred out by optical fiber.
3. data transmission system as described in claim 1, discharger at least two therein, discharger is to rotary body
Center is the most equal.
4. as described in claim 1 data transmission system, curvilinear guide therein is to close, and some curvilinear guide with
With rotary body center as the center of circle, a part of circumference of the circumference that the distance of discharger to this center is formed by radius is overlapping, should
The arc length of lap is more than or equal to the arc length between any two adjacent transmission device on this circumference.
5. data transmission system as described in claim 1, curvilinear guide therein is to close, and some curvilinear guide is tight
Paste with rotary body center as the center of circle, the outside of a part of circumference of the circumference that the distance of discharger to this center is formed by radius,
The angle that this partial trace guide rail and rotary body center are formed is more than or equal to any two adjacent transmission device and rotation on this circumference
Turn the center of circle formed angle.
6. data transmission system as described in claim 1, reception device therein is arranged on curvilinear guide, and receives device
Between with steel wire tight be connected to.
7. data transmission system as described in claim 1, fiber rotation connector therein is positioned at the surrounded shape of curvilinear guide
Middle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010283499.3A CN101982942B (en) | 2010-09-16 | A kind of high speed optical data transmission system between rotary body and fixed body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010283499.3A CN101982942B (en) | 2010-09-16 | A kind of high speed optical data transmission system between rotary body and fixed body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101982942A CN101982942A (en) | 2011-03-02 |
| CN101982942B true CN101982942B (en) | 2016-11-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xu Yuanfei Inventor after: Wang Ji Inventor after: Yang Jiwen Inventor after: Liu Gang Inventor after: Huang Faheng Inventor before: Xu Yuanfei Inventor before: Wang Ji Inventor before: Yang Jiwen |
|
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 100013 Beijing City, Dongcheng District Hepingli Street No. 11 Applicant after: Beijing Hangxing Technology Development Co., Ltd. Address before: 100013 Beijing City, Dongcheng District Hepingli Street No. 11 Applicant before: Beijing Hangxing Technology Development Co., Ltd. |
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| GR01 | Patent grant |