CN104393918B - Optical Data Transmission System between rotary body and fixed body - Google Patents
Optical Data Transmission System between rotary body and fixed body Download PDFInfo
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- CN104393918B CN104393918B CN201410773827.6A CN201410773827A CN104393918B CN 104393918 B CN104393918 B CN 104393918B CN 201410773827 A CN201410773827 A CN 201410773827A CN 104393918 B CN104393918 B CN 104393918B
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- optic collimator
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Abstract
The invention discloses the Optical Data Transmission System between a kind of rotary body and fixed body, it includes data acquisition mechanism, multiple fiber optic collimator mirror and data receiving mechanisms, data acquisition mechanism is arranged on rotary body with multiple fiber optic collimator mirrors, rotary body is cylinder, data acquisition mechanism is connected with multiple fiber optic collimator mirrors respectively by optical fiber, the data conversion come will be gathered into digital optical signal and multiple fiber optic collimator mirrors are sent to by optical fiber simultaneously, multiple fiber optic collimator mirrors are arranged on one end face of rotary body along even circumferential, the central angle corresponding to arc length between the center of two neighboring fiber optic collimator mirror is less than or equal to the central angle corresponding to arc length of the effective range of receiving of data receiver mechanism on the circumference, data receiver mechanism is arranged on fixed body, positioned at the front of circumference where fiber optic collimator mirror.The present invention is based on Wireless Laser Communication Technology, and the detection data high-speed on rotary body is highly reliably transferred on fixed body by realization.
Description
Technical field
The present invention relates to the high speed data transmission system between a kind of rotary body based on wireless light communication and fixed body, especially
It is related to the high speed data transmission system between the rotary body suitable for industrial CT system and medical CT system and fixed body.
Background technology
In industrial technical field, there are many application scenarios to need the data information transfer on rotary body to fixed body
On, typically apply such as in industrial CT system and medical CT system, when being detected to checked object, it is necessary in real time will
The high speed information detected on rotary body is highly reliably transferred on fixed body.Initial data transmission system be by brush and
The mode of conducting ring realizes, but because the contact resistance value of rotary body when rotated between brush and conducting ring is constantly
Change, this change can produce very big signal noise, so as to reduce the reliability of data transfer, therefore can not be used for transmitting
High-speed data signal.Particularly under hyperbaric environment, high-voltage noise caused by the electrion between rotary body and fixed body is more
Greatly.Further, since the contact friction between carbon brush and slip ring, also have impact on the service life of data transmission system.
As high-speed industrial CT system and medical CT system with multiple rows of x-ray detector are obtained extensively in actually detected
Using the detection data that system is collected within the unit interval are greatly increased, and are realized by the way of carbon brush and slip ring contact
Data transfer is more and more unreliable and preferable.Therefore, industry is proposed with wireless capacity coupled mode come instead of upper
The carbon brush slip-ring mode stated, but wireless capacity coupled electromagnetic field is easier by external voltage, electric current and electromagnetic field
Disturb, therefore the accuracy and transmission rate of high speed data transfer are restricted and influenceed.
The problem of in order to solve above-mentioned, industry also proposed based on optical signal transmission system, such as in Publication No. CN
In 101006925A patent application, a kind of data transmission system based on optical fiber is disclosed, wherein, on rotary body circumferentially
Several Electrical-to-opticaconversion conversion components (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 come receive emitting portion transmitting optical signal and be sent to opto-electronic conversion
Element, it is ensured that in real work, the light beam of at least a branch of emitting portion transmitting can fall on the fibre bundle on fixed body.
In Publication No. CN 1989905A patent application, a kind of data transmission system based on optical fiber is also disclosed, with CN
Unlike 101006925A, an Electrical-to-opticaconversion conversion component (such as laser two is only provided with this patent application on rotary body
Pole pipe) and condenser lens as signal emission part, optical fiber is along the circumferential direction covered with fixed body and is believed to receive the light of transmitting
Number and be sent to photo-electric conversion element.But both above-mentioned systems all employ more laser or optical fiber, cost is higher, real
It is restricted with property.
The content of the invention
It is an object of the invention to provide a kind of height being used between rotary body and fixed body based on wireless laser communication
In the slip ring system of fast high reliability data transmission system, the industry CT that is particularly suitable for use in or Medical CT, to realize on rotary body
Detection data high-speed be highly reliably transferred on fixed body.
Optical Data Transmission System between the rotary body and fixed body of the present invention includes data acquisition mechanism, multiple optical fiber
Collimating mirror and data receiving mechanism, the data acquisition mechanism are arranged on rotary body with multiple fiber optic collimator mirrors, institute
Rotary body is stated for cylinder, the data acquisition mechanism is connected with multiple fiber optic collimator mirrors, will gathered respectively by optical fiber
The data conversion come is sent to multiple fiber optic collimator mirrors, multiple fiber optic collimators simultaneously into digital optical signal by optical fiber
Mirror is arranged on described one end face of rotary body along even circumferential, the arc between the center of two neighboring fiber optic collimator mirror
Long corresponding central angle is less than or equal to arc length institute of the effective range of receiving of the data receiver mechanism on the circumference
Corresponding central angle, the data receiver mechanism is arranged on fixed body, where the fiber optic collimator mirror circumference just before
Side.
It is preferred that the data acquisition mechanism includes X-ray emitter, X-ray reception device and data acquisition device, the X-ray
Emitter is symmetrically disposed in the inner circumferential of rotary body with X-ray reception device, and the X-ray reception device launches the X-ray
The X-ray for the transmission detected body that device is sent changes into analog electrical signal and is transferred to the data acquisition device, and the data are adopted
Acquisition means are also disposed in rotary body inner circumferential, and the data acquisition device includes electrooptic switching element, the data acquisition device
The analog electrical signal for transmitting is converted into digital electric signal, and is converted into digital electric signal by the electrooptic switching element
Optical telecommunication number, multiple fiber optic collimator mirrors are given by optical fiber simultaneous transmission.
It is preferred that the data receiver mechanism includes condenser lens, laser detector and graphics processing unit, the laser inspection
Device is surveyed to be arranged in place of the focus of condenser lens, the condenser lens be arranged on the fiber optic collimator mirror where circumference just before
The light beam for being loaded with data-signal can be irradiated to described by side, the fiber optic collimator mirror that the arrival condenser lens receives scope
On condenser lens, then focused light rays on the laser detector by condenser lens, will be believed by the laser detector
Number send described image processing unit to.
It is preferred that determining the fiber optic collimator mirror number and the fiber optic collimator mirror according to the effective aperture of the condenser lens
The radius of the circumference at place
The present invention, which can be realized, is highly reliably transferred to the detection data high-speed on rotary body on fixed body.It is not susceptible to
To the interference of external voltage, electric current and electromagnetic field, and less land used utilizes the high capital equipments, low cost, practicality such as optical fiber
It is good.
Because the present invention realizes the high-speed transfer of data using wireless laser communication, transmission rate is high, the bit error rate is low simultaneously
And strong antijamming capability, meet the requirement of big data quantity high-speed transfer in industry CT or Medical CT.
Brief description of the drawings
Fig. 1 is the principle schematic of data transmission system proposed by the invention.
Fig. 2 is Fig. 1 top view.
Embodiment
As shown in figure 1, wireless laser data transmission system proposed by the invention includes rotary body 110, data acquisition dress
Put 140, fiber optic collimator mirror 150, fixed body 210, laser receiver 220.Wherein, data acquisition device 140 and fiber optic collimator
Mirror 150 is all arranged on rotary body 110, and X-ray emitter 120 and X-ray reception device 130 are relative, are also mounted at rotary body 110
Inner circumferential on, the thick line circumference of rotary body 110 is rotary body internal diameter, and fine rule circumference is rotary body external diameter, and dashed circle is optical fiber
The circumference formed during 150 central rotation of collimating mirror, the number of fiber optic collimator mirror 150 depends on the place of fiber optic collimator mirror 150
Two fiber optic collimator mirror 150A are only schematically illustrated in the radius of circumference and the clear aperature of condenser lens 221, Fig. 1,
150B, does not draw all fiber optic collimator mirrors 150, the center of all fiber optic collimator mirrors 150 is respectively positioned on this circumference completely
On；Laser receiver 220 is made up of condenser lens 221 and laser detector 222, and laser receiver 220, which is arranged on, to be fixed
On body 210, 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 motor, and motor, X-ray are not shown in Fig. 1
Emitter 120 is launched X-ray and rotated with rotary body 110, and described X-ray is placed through the X-ray emitter 120 and X-ray connects
Checked object between receiving apparatus 130 and received by X-ray reception device 130, X-ray reception device 130 will can be received
The energy of X-ray be converted to analog electrical signal, the X-ray reception device 130 can be the x-ray detector array of single row or multiple rows.
The X-ray reception device 130 is connected with data acquisition device 140, and the analog electrical signal detected is sent into this
Data acquisition device 140, is converted into digital electric signal, in high speed CT system after analog-to-digital conversion and corresponding data processing
In, data acquisition device 140 is general also to include electrooptic switching element, and digital electric signal is converted to numeral by the electrooptic switching element
Optical signal simultaneously gives each fiber optic collimator mirror 150 by Optical Fiber Transmission.For brevity, data acquisition is merely illustrated in Fig. 1
Digital optical signal is given two fiber optic collimator mirrors 150A and 150B by device 140 by Optical Fiber Transmission.
Laser receiver 220 is made up of condenser lens 221 and laser detector 222, and laser detector 222 is being focused on thoroughly
In the focus of mirror 221.It is loaded with the light beam of data-signal to be irradiated on condenser lens 221, is focused light rays at by condenser lens 221
On laser detector 222.Laser detector 222 sends the signal received to image procossing list after opto-electronic conversion again
Member.
Fig. 2 is that the white fiber optic collimator mirror 150 in the top view of the schematic diagram shown in Fig. 1, Fig. 2 is fiber optic collimator mirror
150 rotate to state when at some position.
As shown in Fig. 2 fiber optic collimator mirror 150A launches laser signal, axially condenser lens 221 is transmitted into along rotary body 110
On, in the detection faces that laser detector 222 is focused on by condenser lens 221.Fiber optic collimator mirror 150A be will rotate out of it is poly-
During the effective receiving zone domain of focus lens 221, next fiber optic collimator mirror 150B has rotated to effective reception of condenser lens 221
Region, so as to ensure the continuity of communication.
The radius of circumference where the number of fiber optic collimator mirror 150 and fiber optic collimator mirror 150 and condenser lens 221 it is effective
Aperture is related, and the arc section that the effective aperture of condenser lens is covered on rotational circle (shown in dotted line) in the present embodiment is corresponding
Arc chord angle is 10 degree, then the number of fiber optic collimator mirror 150 is exactly 36, by that analogy, according to different radiuses and can be gathered
The effective aperture of focus lens 221 determines the fiber optic collimator mirror 150 of different numbers.
The preferred embodiment of the present invention is illustrated above, but the present invention is not limited to above-described embodiment.It is right
For those skilled in the art, in the category described in claims, it should be apparent that it is conceivable that various modifications
Or fixed case, the technology category of the present invention is fallen within certainly.
Claims (4)
1. the Optical Data Transmission System between a kind of rotary body and fixed body, it is characterised in that：Including data acquisition mechanism, many
Individual fiber optic collimator mirror and data receiving mechanism, the data acquisition mechanism is arranged at rotary body with multiple fiber optic collimator mirrors
On, the rotary body is cylinder, and the data acquisition mechanism is connected with multiple fiber optic collimator mirrors respectively by optical fiber, will
The data conversion that collection comes is sent to multiple fiber optic collimator mirrors, multiple optical fiber simultaneously into digital optical signal by optical fiber
Collimating mirror is arranged on described one end face of rotary body along even circumferential, between the center of two neighboring fiber optic collimator mirror
Arc length corresponding to central angle be less than or equal to arc of effective range of receiving on the circumference of the data receiver mechanism
Long corresponding central angle, the data receiver mechanism is arranged on fixed body, positioned at circumference where the fiber optic collimator mirror
Front.
2. the Optical Data Transmission System between rotary body according to claim 1 and fixed body, it is characterised in that：It is described
Data acquisition mechanism includes X-ray emitter, X-ray reception device and data acquisition device, and the X-ray emitter connects with X-ray
Receiving apparatus is symmetrically disposed in the inner circumferential of rotary body, the transmission quilt that the X-ray reception device sends the X-ray emitter
The X-ray of detection body changes into analog electrical signal and is transferred to the data acquisition device, and the data acquisition device is also disposed at rotation
Turn in inner circumferential, the data acquisition device includes electrooptic switching element, the data acquisition device will transmit the simulation electricity come
Signal is converted into digital electric signal, and digital electric signal is converted into optical telecommunication number by the electrooptic switching element, passes through
Optical fiber simultaneous transmission gives multiple fiber optic collimator mirrors.
3. the Optical Data Transmission System between rotary body according to claim 1 or 2 and fixed body, it is characterised in that：
The data receiver mechanism includes condenser lens, laser detector and graphics processing unit, and the laser detector is arranged at poly-
In place of the focus of focus lens, the condenser lens is arranged on the front of fiber optic collimator mirror place circumference, reaches described poly-
The light beam for being loaded with data-signal can be irradiated on the condenser lens by the fiber optic collimator mirror that focus lens receive scope, then
Focused light rays at by condenser lens on the laser detector, the figure is transmitted a signal to by the laser detector
As processing unit.
4. the Optical Data Transmission System between rotary body according to claim 3 and fixed body, it is characterised in that：According to
The effective aperture of the condenser lens determines the fiber optic collimator mirror number and the radius of the circumference where the fiber optic collimator mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410773827.6A CN104393918B (en) | 2014-12-12 | 2014-12-12 | Optical Data Transmission System between rotary body and fixed body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410773827.6A CN104393918B (en) | 2014-12-12 | 2014-12-12 | Optical Data Transmission System between rotary body and fixed body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104393918A CN104393918A (en) | 2015-03-04 |
| CN104393918B true CN104393918B (en) | 2017-07-18 |
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ID=52611760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410773827.6A Active CN104393918B (en) | 2014-12-12 | 2014-12-12 | Optical Data Transmission System between rotary body and fixed body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104393918B (en) |
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2014
- 2014-12-12 CN CN201410773827.6A patent/CN104393918B/en active Active
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| Publication number | Publication date |
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| CN104393918A (en) | 2015-03-04 |
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| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xu Yuanfei Inventor after: Yao Wei Inventor after: Guo Wenbin Inventor after: Liu Yuping Inventor before: Xu Yuanfei Inventor before: Yao Wei Inventor before: Liu Yuping |
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Free format text: CORRECT: INVENTOR; FROM: XU YUANFEI YAO WEI LIU YUPING TO: XU YUANFEI YAO WEI GUO WENBIN LIU YUPING |
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