CN101888270A - Optic fiber data transmission system for slip ring - Google Patents
Optic fiber data transmission system for slip ring Download PDFInfo
- Publication number
- CN101888270A CN101888270A CN2010102123807A CN201010212380A CN101888270A CN 101888270 A CN101888270 A CN 101888270A CN 2010102123807 A CN2010102123807 A CN 2010102123807A CN 201010212380 A CN201010212380 A CN 201010212380A CN 101888270 A CN101888270 A CN 101888270A
- Authority
- CN
- China
- Prior art keywords
- data transmission
- rotary body
- transmission system
- fibre
- transmission mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 67
- 230000005540 biological transmission Effects 0.000 title claims abstract description 43
- 239000013307 optical fiber Substances 0.000 claims abstract description 28
- 230000003287 optical effect Effects 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 claims abstract description 5
- 230000001360 synchronised effect Effects 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000002591 computed tomography Methods 0.000 abstract 5
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 7
- 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
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 1
Images
Landscapes
- Apparatus For Radiation Diagnosis (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
The invention discloses a high-speed optic fiber data transmission system between a rotating body and a fixing body. The system is suitable for slip ring systems of industrial computed tomography (CT), high-end security monitors or medicinal CT based on optic fiber communication technology to transmit detection data on the rotating body to the fixing body reliably at a high speed. The system comprises a data acquisition device, an optical fiber collimating lens, a belt wheel, a synchronous belt and an optical fiber coupling mirror which are arranged on the rotating body, and an optical fiber rotating connector and an optical combiner which are arranged on the fixing body. By using optical fiber communication for the high-speed data transmission, the system has a high transmission speed, a low error rate and a high anti-interference capability and meets the requirement of high-speed mass data transmission in the industrial CT, the high-end security monitors or the medicinal CT.
Description
Technical field
The present invention relates to a kind ofly, relate in particular to the rotary body that is applicable in industrial CT system, safety check instrument and the Medical CT system and the high speed data transmission system between the fixed body based on the rotary body of optical fiber communication and the high speed data transmission system between the fixed body.
Background technology
In the industrial technology field, there are a lot of application scenarios need be to fixed body with the data information transfer on the rotary body, typical application is as in industrial CT system, safety check instrument and Medical CT system, when checked object is detected, need to be transferred on the fixed body to detected high speed information high reliability on the rotary body in real time.Initial data transmission system is that the mode by brush and conducting ring realizes, but since rotary body when rotated the contact resistance value between brush and the conducting ring constantly changing, this variation can produce very big signal noise, therefore thereby reduced reliability of data transmission, can not be used for the transmitting high speed data signal.Particularly under hyperbaric environment, the high-voltage noise that the electrion between rotary body and the fixed body causes is bigger.In addition, owing to the contact friction between carbon brush and the slip ring, also influenced the useful life of data transmission system.
Along with high-speed industrial CT system and Medical CT system with many row's x-ray detectors are used widely in actual detected, the detection data that system collected in the unit interval increase greatly, and the mode that adopts carbon brush to contact with slip ring realizes that transfer of data is more and more unreliable and desirable.Therefore, industry has proposed to replace above-mentioned carbon brush slip-ring mode with wireless capacity coupled mode, but wireless capacity coupled electromagnetic field is than the interference that is easier to be subjected to external voltage, electric current and electromagnetic field, so the accuracy of high speed data transfer and transmission rate are restricted and influence.
In order to solve the above problems, industry has also proposed the signal transmission system based on optics, as being in the patent application of CN101006925A at publication number, a kind of data transmission system based on optical fiber is disclosed, wherein, on rotary body, along the circumferential direction fix several electric light conversion elements (as laser diode) and condenser lens as signal emission part, the fiber bundle that one section finite length along the circumferential direction is set on fixed body receives the light signal of radiating portion emission and is sent to photo-electric conversion element, guarantee in real work to have at least a branch of radiating portion emitted light beams can drop on the fiber bundle on the fixed body.At publication number is in the patent application of CN 1989905A, a kind of data transmission system based on optical fiber is disclosed equally, different with CN101006925A is, on rotary body, only be provided with an electric light conversion element (as laser diode) and condenser lens in this patent application as signal emission part, on fixed body, along the circumferential direction be covered with optical fiber and receive the light signal of emission and be sent to photo-electric conversion element.But above-mentioned these two kinds of systems have all adopted more laser or optical fiber, and cost is higher, and practicality is restricted.
Summary of the invention
The object of the present invention is to provide a kind of high speed high reliability data transmission system between rotary body and the fixed body of being used for based on optical fiber communication, be particularly useful in the slip ring system of industry CT, safety check instrument and Medical CT, to realize being transferred to the detection data high-speed on the rotary body on the fixed body highly reliably, this high speed high reliability data transmission system comprises: flexible transmission mechanism, the first of this flexibility transmission mechanism is arranged on the rotary body, second is identical with third part, meshes with first respectively; Data acquisition unit, it is arranged on the rotary body; Several fiber optic collimator mirrors, it is arranged on the rotary body; Several fibre-coupled mirrors, it is arranged on this another part of flexible transmission mechanism; Fiber rotation connector, it is arranged on this fixed body.
Wherein data acquisition unit links to each other with the fiber optic collimator mirror, have that analog electrical signal with X-ray receiving system conversion is converted to digital electric signal and this digital electric signal is converted to digital optical signal and by optical fiber with its function that transfers out.
The fiber optic collimator mirror can become the optical alignment in the optical fiber directional light to spatial emission, fibre-coupled mirrors can focus on the directional light in space in the optical fiber, fiber rotation connector can be with the optical transmission in the optical fiber of rotation in fixing optical fiber, thereby be transferred in the image processing apparatus of safety check instrument or CT system again.
Description of drawings
Fig. 1 is the principle schematic of data transmission system proposed by the invention.
Embodiment
Though the flexible transmission mechanism in the execution mode hereinafter described be with belt wheel and synchronously band be example, be not limited thereto, those skilled in the art can adopt any flexible transmission mechanism to realize the present invention.Equally, adopting two groups in the execution mode hereinafter described is with synchronously, and the length of synchronous band is three times of rotary body 1/4th girths, but be not limited thereto, those skilled in the art can adopt any synchronous band that can realize of the present invention group of number and anyly can realize that synchronous strip length of the present invention realizes the present invention.
As shown in Figure 1, optical fiber data transmission system proposed by the invention comprises rotary body 110, data acquisition unit 140, fiber optic collimator mirror 150, belt wheel 160 is with 170 synchronously, fibre-coupled mirrors 180, fixed body 210, fiber rotation connector 220 and optical combiner 230,240.Wherein, data acquisition unit 140, fiber optic collimator mirror 150, belt wheel 160 all are installed on the rotary body 110, and X-ray emitter 120 and X-ray receiving system 130 also are installed on the rotary body 110; Be with 170 synchronously, fiber rotation connector 220 and optical combiner 230,240 all be installed on the fixed body 210, fibre-coupled mirrors 180 is installed in to be with on 170 synchronously, fixed body 210 outermost fine rules are represented the framework of fixed body 210.Only schematically show belt wheel 160 among Fig. 1 and be with 170 parts engagement situation synchronously.
In the scanning process of CT system, rotary body 110 is rotated by driven by motor, motor is not shown in Fig. 1, X-ray emitter 120 continues the emission X-ray and rotates with rotary body 110, described X-ray passes checked object between this X-ray emitter 120 and X-ray receiving system 130 and received by X-ray receiving system 130, X-ray receiving system 130 can be an analog electrical signal with the power conversion of the X-ray that receives, and this X-ray receiving system 130 can be the x-ray detector array of single row or multiple rows.
This X-ray receiving system 130 links to each other with data acquisition unit 140, and detected analog electrical signal is sent to this data acquisition unit 140, through converting digital electric signal to after analog-to-digital conversion and the corresponding data processing, in high speed CT system, data acquisition unit 140 generally also comprises electrooptic switching element 141, and digital electric signal is converted to digital optical signal and gives fiber optic collimator mirror 150 by Optical Fiber Transmission.In the system of reality, data acquisition unit 140 is connected with all fiber optic collimator mirror 150 by optical fiber splitter.
The fiber optic collimator mirror is fixed on the circumference of rotary body 110, along the radial emission laser signal of rotary body 110, selects 2 fiber optic collimator mirror 150A and 150B in the present embodiment for use, and 90 degree are installed at interval.Belt wheel 160 is fixed on the external diameter of rotary body 110, be with 170A synchronously, 170B 90 degree at interval installs, and be meshed with belt wheel 160 respectively, fibre-coupled mirrors 180 is fixed on synchronously to be with, be three times of belt wheel 1/160th 4 girth with 170 length synchronously, guarantee synchronously to mesh 1/4th girths of belt wheel 160 fully with belt wheel 160 with 170, be with 3 fibre-coupled mirrors 180A of 170A equal intervals fixed installation synchronously, 180B and 180C, be with 3 fibre-coupled mirrors 180D of 170B equal intervals fixed installation synchronously, 180E and 180F, wherein fibre-coupled mirrors 180A is relative with fiber optic collimator mirror 150A and 150B respectively with 180B.When rotary body 110 rotations, thereby be fixed on the rotary body 110 belt wheel 160 also thereupon rotation drive and to be with 170 to rotate synchronously, be rotated clockwise to the process of position at fiber optic collimator mirror 150B place from position shown in Figure 1 as fiber optic collimator mirror 150A like this, fibre-coupled mirrors 180A also is rotated counterclockwise from position shown in Figure 1 to the position at fibre-coupled mirrors 180B place, and in rotary course, it is relative with fibre-coupled mirrors 180A to remain fiber optic collimator mirror 150A, thereby guarantees that fiber optic collimator mirror 150A emitted laser signal can be got access to by fibre-coupled mirrors 180A fully.
When fiber optic collimator mirror 150A dextrorotation turn 90 degrees, fiber optic collimator mirror 150B also dextrorotation turn 90 degrees, band 170A and 170B are rotated counterclockwise 90 degree under the drive of belt wheel 160 synchronously, thereby guarantee that fibre-coupled mirrors 180F is corresponding with fiber optic collimator mirror 150B, simultaneously, belt wheel 160 also drives fiber rotation connector 220A and 220B is rotated counterclockwise, thereby guarantees that fiber rotation connector 220 is constant with the relative position of fibre-coupled mirrors.In the rotary course of belt wheel 160, it is relative with fiber optic collimator mirror 150 to have a fibre-coupled mirrors 180 all the time, and transmission of data signals.
Fiber optic collimator mirror 150 can become the optical alignment in the optical fiber directional light to spatial emission, fibre-coupled mirrors 180 can focus on the directional light in space in the optical fiber, fiber rotation connector 220 can be with the optical transmission in the optical fiber of rotation in fixing optical fiber, what adopt in the present invention is the triple channel fiber rotation connector, three fixed fiber passages of fiber rotation connector are connected on the three-in-one optical combiner, synthetic one road optical fiber output, through synthetic one tunnel optical-fibre channel of a two-in-one optical combiner, output in the image processing apparatus again.
In the present invention, the number of fiber optic collimator mirror 150 is preferably 2, the bar number of band is preferably 2 synchronously, and the number of fibre-coupled mirrors 180 is preferably 6, but fiber optic collimator mirror 150, fibre-coupled mirrors 180 and the synchronous band of any number and bar number can be set according to the actual needs.
Claims (6)
1. one kind based on the rotary body of optical fiber communication and the high speed data transmission system between the fixed body, it is characterized in that this high speed data transmission system comprises:
Flexible transmission mechanism, this flexibility transmission mechanism is made up of three parts, and first is arranged on the rotary body, and second portion and third part are same devices, cooperate with this first respectively;
Data acquisition unit, it is arranged on the rotary body;
Two fiber optic collimator mirrors, it is arranged in the first of flexible transmission mechanism;
Six fibre-coupled mirrors, it is arranged on second and the third part of flexible transmission mechanism;
Two fiber rotation connectors, it is arranged on this fixed body;
The optical fiber mixer, it is arranged on this fixed body.
2. the high speed data transmission system described in claim 1, data acquisition unit analog electrical signal wherein are converted to digital electric signal and this digital electric signal are converted to digital optical signal, by optical fiber it are transferred out.
3. the high speed data transmission system described in claim 1, two fiber optic collimator mirrors wherein are arranged on this rotary body with being separated by 90 degree, and radial emission laser signal along this rotary body, three fibre-coupled mirrors wherein are arranged on the second portion of flexible transmission mechanism equally spacedly, other three fibre-coupled mirrors are arranged on the third part of flexible transmission mechanism equally spacedly, the length of second and third part of this flexibility transmission mechanism be this flexibility transmission mechanism first's length 3/4ths.
4. the high speed data transmission system described in claim 1, fiber rotation connector wherein lays respectively at the centre of second and shape that third part surrounds of flexible transmission mechanism.
5. the high speed data transmission system described in claim 1 wherein when rotary body rotates, has a fibre-coupled mirrors relative with a fiber optic collimator mirror all the time, and revolves together and turn 90 degrees.
6. the high speed data transmission system described in claim 1, wherein when rotary body rotates, a pair of fiber optic collimator mirror and fibre-coupled mirrors revolve vis-a-vis together turn 90 degrees after, it is relative that another fiber optic collimator mirror and another fibre-coupled mirrors begin, and revolve synchronously and turn 90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102123807A CN101888270B (en) | 2010-06-29 | 2010-06-29 | Optic fiber data transmission system for slip ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102123807A CN101888270B (en) | 2010-06-29 | 2010-06-29 | Optic fiber data transmission system for slip ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101888270A true CN101888270A (en) | 2010-11-17 |
| CN101888270B CN101888270B (en) | 2013-01-30 |
Family
ID=43074010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102123807A Active CN101888270B (en) | 2010-06-29 | 2010-06-29 | Optic fiber data transmission system for slip ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101888270B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999018463A1 (en) * | 1997-10-02 | 1999-04-15 | Litton Systems, Incorporated | Fiber optic rotary joint |
| CN1989905A (en) * | 2005-12-30 | 2007-07-04 | 西门子（中国）有限公司 | CT slip-ring system based on optical fibre data-transmission |
| CN101716082A (en) * | 2009-12-17 | 2010-06-02 | 北京航星机器制造公司 | Optical data transmission system between rotator and stator |
-
2010
- 2010-06-29 CN CN2010102123807A patent/CN101888270B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999018463A1 (en) * | 1997-10-02 | 1999-04-15 | Litton Systems, Incorporated | Fiber optic rotary joint |
| CN1989905A (en) * | 2005-12-30 | 2007-07-04 | 西门子（中国）有限公司 | CT slip-ring system based on optical fibre data-transmission |
| CN101716082A (en) * | 2009-12-17 | 2010-06-02 | 北京航星机器制造公司 | Optical data transmission system between rotator and stator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101888270B (en) | 2013-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6327327B1 (en) | Multi-channel segmented slip ring | |
| CN101716082B (en) | Optical data transmission system between rotator and stator | |
| US4178515A (en) | Optical signal communicating apparatus | |
| US5535033A (en) | Contactless data transmission device | |
| CA2780481C (en) | Fiber optic rotary joints, methods practiced thereby, and fiber optic devices | |
| JP3643384B2 (en) | X-ray tomography equipment | |
| CN101888271B (en) | Optical data transmission system between rotating body and fixed body | |
| JP3802589B2 (en) | Bidirectional information transmission and energy simultaneous transmission device | |
| CN101873173B (en) | High-speed optical data transmission system between rotating body and fixed body | |
| CN101794504B (en) | Optical fiber data transmission system between rotating body and fixed body | |
| IL98421A (en) | Optical communication link | |
| CN101888270B (en) | Optic fiber data transmission system for slip ring | |
| JP2005177484A (en) | System and method for connecting data slip ring | |
| US5010254A (en) | System for communicating energy between relatively moving devices | |
| CN100448403C (en) | Optical signal transmission system of computed tomography imaging equipment | |
| JP4601978B2 (en) | Signal transmission apparatus for medical image diagnostic system | |
| CN1989905A (en) | CT slip-ring system based on optical fibre data-transmission | |
| US9810793B2 (en) | X-ray CT apparatus and data detection system for X-ray CT apparatus | |
| JPH06261003A (en) | Data transmission equipment | |
| JP2010074253A (en) | Bidirectional optical communication device | |
| CN101884547A (en) | High-speed optical data transmission system for slip ring | |
| CN101982942A (en) | High-speed optical data transmission system between rotor and stator | |
| CN101982942B (en) | A kind of high speed optical data transmission system between rotary body and fixed body | |
| CN101873174B (en) | High-speed laser data transmission system between rotating body and fixed body | |
| CN101884548B (en) | Optical data transmission system adopting slip ring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| 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 |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: XU YUANFEI WANG JI YANG JIWEN TO: XU YUANFEI WANG JI YANG JIWEN LIU GANG HUANG FAHENG |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |