CN115037368B - Non-contact communication slip ring and optical device arrangement method thereof - Google Patents
Non-contact communication slip ring and optical device arrangement method thereof Download PDFInfo
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- CN115037368B CN115037368B CN202210732520.6A CN202210732520A CN115037368B CN 115037368 B CN115037368 B CN 115037368B CN 202210732520 A CN202210732520 A CN 202210732520A CN 115037368 B CN115037368 B CN 115037368B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/1141—One-way transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07955—Monitoring or measuring power
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
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Abstract
The invention provides a non-contact communication slip ring and an optical device arrangement method thereof, belonging to the technical field of communication devices and comprising the following steps: at least one receiving tube and a group of transmitting tubes are respectively arranged on the opposite sides of two plate surfaces of a stator and a rotor of the non-contact communication slip ring along the circumferential direction; determining a constraint comprising: when the receiving tube rotates to a position between two adjacent transmitting tubes, the opening angle formed by the two transmitting tubes and the receiving tube is smaller than the angle of the allowable receiving range of the transmitting tube and the receiving tube; determining that the light intensity received by the receiving tube is greater than the judgment threshold value of the receiving tube according to the transmitting power of the transmitting tube; and according to the constraint conditions, calculating the range of the distance between the two plate surfaces and the maximum value of the central angle between the adjacent transmitting tubes, and determining the distance between the two plate surfaces and the central angle between the adjacent transmitting tubes. The optical device arrangement method realizes the non-contact communication of the via slip ring, effectively reduces the power consumption and the cost, and obviously improves the reliability.
Description
Technical Field
The invention relates to the technical field of communication devices, in particular to a non-contact communication slip ring and an optical device arrangement method thereof.
Background
The slip ring is a rotary conduction device and generally comprises a stator and a rotor. There are various slip rings of electricity, liquid and gas and their combined slip rings. The device is mainly applied to radars, steering wheels, motors, various holders and the like. The communication slip ring is mainly used for transmitting communication signals when rotating. Such as CANBUS, RS485, RS422, DP and Ethernet bus. Communication slip rings are divided into two categories, contact communication slip rings and non-contact communication slip rings. The contact slip ring transfers signals by means of sliding friction of the ring track and the sliding block. The wireless communication device has the defects of communication interruption, micro discharge, much scrap abrasion and the like caused by scrap abrasion or poor contact and needing periodic maintenance and replacement, and the non-contact slip ring can transmit signals without mechanical contact, and mainly comprises wireless slip rings such as WIFI Bluetooth and the like (the defects are long in time delay and serious in aerial electromagnetic interference); an optical fiber communication slip ring (has the defects of high cost, poor vibration resistance and poor environmental adaptability); capacitive and inductive coupling slip rings (mainly used in high-end occasions such as high-frequency communication and the like, and high in cost); optical communication slip rings, and the like.
The non-contact optical communication slip ring is a communication slip ring for converting electricity into light and then converting light into electricity, and has the advantages of moderate cost, short time delay, strong anti-interference capability, good environmental adaptability and the like, and in order to facilitate wiring, a via hole communication slip ring exists.
Disclosure of Invention
In order to solve the above problems, the present invention provides the following technical solutions.
A non-contact communication slip ring and an optical device arrangement method thereof are provided, wherein the non-contact communication slip ring comprises a stator and a rotor which are opposite, and at least one receiving tube and a group of transmitting tubes are respectively and uniformly arranged on one opposite side of two plate surfaces of the stator and the rotor along the circumferential direction; the two plate surfaces comprise a first plate surface and a second plate surface;
the method comprises the following steps:
during simplex communication, determining the arrangement circle radius of the transmitting tube and the receiving tube, the angle of the allowable transmitting range of the transmitting tube, the angle of the allowable receiving range of the receiving tube, the transmitting power of the transmitting tube and the light intensity judgment threshold of the receiving tube;
determining a constraint comprising: when the receiving tube rotates to a position between two adjacent transmitting tubes, the opening angle formed by the two transmitting tubes and the receiving tube is smaller than the angle of the transmitting tube in the allowable transmitting range and the angle of the receiving tube in the allowable receiving range; according to the transmitting power of the transmitting tube, the light intensity received by the receiving tube is determined to be larger than the judgment threshold value of the receiving tube;
calculating the range of the distance between the two plate surfaces and the maximum value of the central angle between the adjacent transmitting tubes according to the constraint conditions, and determining the distance between the two plate surfaces and the central angle between the adjacent transmitting tubes;
uniformly and circumferentially arranging the receiving tubes on the second plate surface, and determining the number of the transmitting tubes according to the central angle between the adjacent transmitting tubes and the number of the receiving tubes; the transmitting tubes are arranged on the first plate surface according to the space between the plate surfaces, the circumferential radius of the transmitting tubes, the number of the transmitting tubes and the central angle between the adjacent transmitting tubes.
Preferably, the method further comprises the following steps:
during duplex communication, at least one receiving tube and a group of transmitting tubes are uniformly arranged on the opposite sides of two plate surfaces of a stator and a rotor of the non-contact communication slip ring along the circumferential direction, and the opposite group of transmitting tubes and the receiving tubes are mutually matched;
uniformly and circumferentially arranging the receiving tubes on the first plate surface on which the transmitting tubes are arranged, wherein the receiving tubes are positioned on the symmetry axis of one group of two adjacent transmitting tubes;
calculating the minimum circumference radius of the arrangement of the receiving tubes of the first plate surface, which avoids the reflection interference of the transmitting tube, according to the reflection coefficient of the second plate surface, the transmitting power and the extinction ratio of the transmitting tube;
taking the circumferential radius of the transmitting tube arrangement arranged on the first plate surface as the circumferential radius of the receiving tube arrangement of the second plate surface, and calculating the maximum circumferential radius of the transmitting tube of the first plate surface, which avoids reflection interference;
and determining the arrangement circumferential radius of the receiving pipe of the first board surface and the second board surface transmitting pipe according to the minimum circumferential radius of the arrangement of the receiving pipe of the first board surface and the maximum circumferential radius of the second board surface transmitting pipe.
Preferably, the calculation of the distance range between the two plate surfaces and the maximum value of the central angle between the adjacent transmitting tubes comprises the following steps:
determining the circumferential radius R1 of the arrangement of the transmitting tubes and the receiving tubes, and when the receiving tubes rotate to a position between two adjacent transmitting tubes, the field angle formed by the two transmitting tubes and the receiving tubes is smaller than the angle of the allowable receiving range of the transmitting tubes and the receiving tubes, so that the distance L between two plate surfaces and the central angle A between the adjacent transmitting tubes need to meet the following requirements:
R1*sin(A/2)＝L*tan(B/2)
B<DA,B<PDA
in the formula, B is an opening angle between the transmitting tubes of the two first plate surfaces and the receiving tube of the second plate surface; DA is an angle of an allowable transmitting range of the transmitting tube; the PDA is the angle of the allowable receiving range of the receiving tube;
the light intensity W1 received by the receiving tube needs to be greater than the judgment threshold value of the receiving tube, then:
W1＝2*P*cos(B/2)/[L/cos(B/2)] 2
W1>Q*1.2
in the formula, P is the transmitting power of the transmitting tube; q is the light intensity judgment threshold of the receiving tube, and reliable receiving is carried out when the light intensity judgment threshold is more than 120 percent;
and simultaneously solving according to the formula to obtain the range of the distance between the two plate surfaces and the maximum value of the central angle A between the adjacent transmitting tubes, and determining the distance L between the two plate surfaces and the central angle A between the adjacent transmitting tubes according to the processing requirement.
Preferably, when there are two receiving pipes per plate surface, then:
2*N*A≥360°
and solving the number N of the transmitting tubes according to the formula.
Preferably, the calculation of the circumferential radius of the arrangement of the receiving pipe of the first plate surface and the transmitting pipe of the second plate surface comprises the following steps:
according to the reflection coefficient K of the second plate surface, the transmitting power P and the extinction ratio E of the transmitting tube, the reflected light intensity W2 received by the receiving tube is as follows:
(R2-R1)＝L*tan(C/2)
W2＝2*P*K*cos(C/2)/[2*L/cos(C/2)] 2
W1/E+W2<Q*0.8
in the formula, C is an incident and reflection included angle when the transmitting tube reflects; r1 is the circumferential radius of the arrangement of the transmitting tubes on the first plate surface; r2 is the circumferential radius of the arrangement of the receiving pipes of the first plate surface; l is the distance between the two plate surfaces; w1 is the light intensity received by the second plate surface receiving tube; q is the light intensity judgment threshold value of the receiving tube, and when the light intensity judgment threshold value is less than 80%, the receiving tube is reliable and has no receiving;
calculating the minimum circumferential radius R2 of the arrangement of the receiving pipes of the first plate surface for avoiding the reflection interference of the transmitting pipe according to the formula;
taking the circumferential radius R1 of the emission tube arrangement arranged on the first plate surface as the circumferential radius R1 of the receiving tube arrangement of the second plate surface, and calculating the maximum circumferential radius R2 of the emission tube of the first plate surface, which avoids reflection interference;
and determining the circumferential radius R2 of the arrangement of the receiving pipe of the first plate surface and the transmitting pipe of the second plate surface according to the range of R2.
Preferably, the center of the stator and the center of the rotor of the non-contact communication slip ring are provided with through holes.
A contactless communications slip ring comprising:
the stator is provided with at least one receiving tube and a group of transmitting tubes which are uniformly arranged on one side along the circumferential direction;
and the rotor is provided with at least one receiving tube and a group of transmitting tubes which are uniformly distributed on one side adjacent to the stator along the circumferential direction.
Preferably, 6 emission tubes are arranged on the surface of the rotor along the circumference with the radius of 13.5mm, and the included angle of the circle centers between the adjacent emission tubes is 30 degrees; 2 receiving tubes are uniformly arranged on the surface of the rotor along the circumference with the radius of 19.5mm, and the included angle between one receiving tube and the center of an adjacent transmitting tube is 15 degrees;
6 transmitting tubes are arranged on the surface of the stator along the circumference with the radius of 19.5mm, and the included angle of the circle centers between the adjacent transmitting tubes is 30 degrees; 2 receiving tubes are uniformly arranged on the surface of the stator along the circumference with the radius of 13.5mm, and the included angle between one receiving tube and the circle center of the adjacent transmitting tube is 15 degrees.
The invention has the beneficial effects that:
the center of the non-contact communication slip ring can be provided with a through hole, but a common optical fiber communication slip ring is difficult to realize, and compared with the existing wireless Bluetooth communication slip ring and the existing optical fiber communication slip ring, the non-contact communication slip ring has the advantages of low cost, low power consumption, short time delay, strong compatibility, strong interference resistance, vibration resistance and strong environmental adaptability. The optical device arrangement method provided by the invention realizes the non-contact communication of the through hole slip ring, effectively reduces the power consumption and the cost, and obviously improves the reliability.
Drawings
FIG. 1 is a schematic diagram of a light device arrangement according to an embodiment of the present invention;
FIG. 2 is a schematic view of a transmitting tube on a panel according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a two panel emitter tube and receiver tube arrangement according to an embodiment of the present invention;
fig. 4 is a schematic diagram of the arrangement of the transmitting tubes and receiving tubes of the same panel in two panels according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The invention discloses a non-contact communication slip ring and an optical device arrangement method thereof, which are shown in figures 1-4 and specifically comprise the following steps:
s1: during simplex communication, at least one receiving tube and a group of transmitting tubes are respectively arranged on the opposite sides of two plate surfaces of a stator and a rotor of the non-contact communication slip ring along the circumferential direction.
S2: determining the arrangement circle radius of the transmitting tube and the receiving tube, the angle of the allowable receiving range of the selected transmitting tube and the selected receiving tube, the transmitting power of the transmitting tube and the light intensity judgment threshold of the receiving tube.
S3: determining a constraint comprising: when the receiving tube rotates to a position between two adjacent transmitting tubes, the opening angle formed by the two transmitting tubes and the receiving tube is smaller than the angle of the allowable receiving range of the transmitting tubes and the receiving tube; and according to the transmitting power of the transmitting tube, determining that the light intensity received by the receiving tube is greater than the judgment threshold value of the receiving tube. Specifically, the method comprises the following steps:
s3.1: determining the circumferential radius R1 of the arrangement of the transmitting tubes and the receiving tubes, and when the receiving tubes rotate to a position between two adjacent transmitting tubes, the field angle formed by the two transmitting tubes and the receiving tubes is smaller than the angle of the allowable receiving range of the transmitting tubes and the receiving tubes, so that the distance L between two plate surfaces and the central angle A between the adjacent transmitting tubes need to meet the following requirements:
R1*sin(A/2)＝L*tan(B/2)
B<DA,B<PDA
in the formula, B is an opening angle between the transmitting tubes of the two first plate surfaces and the receiving tube of the second plate surface; DA is an angle of an allowable transmitting range of the transmitting tube; the PDA is the angle of the allowable receiving range of the receiving tube;
s3.2: the light intensity W1 received by the receiving tube needs to be greater than the judgment threshold value of the receiving tube, then:
W1＝2*P*cos(B/2)/[L/cos(B/2)] 2
W1>Q*1.2
in the formula, P is the transmitting power of the transmitting tube; q is a light intensity judgment threshold value of the receiving tube, and reliable receiving is realized when the light intensity judgment threshold value is more than 120%;
and simultaneously solving according to the formula to obtain the range of the distance between the two plate surfaces and the maximum value of the central angle A between the adjacent transmitting tubes, and determining the distance L between the two plate surfaces and the central angle A between the adjacent transmitting tubes according to the processing requirement.
S4: when the receiver tube of every face is two, then:
2*N*A≥360°
and solving the number N of the transmitting tubes according to the formula.
S5: and uniformly and circumferentially arranging the receiving tubes on the second plate surface, and determining the number of the transmitting tubes according to the central angles between the adjacent transmitting tubes and the number of the receiving tubes.
S6: the launching tubes are arranged on the first plate surface according to the space between the plate surfaces, the circumferential radius of the launching tubes, the number of the launching tubes and the central angle between the adjacent launching tubes.
Example 2
S1: during duplex communication, at least one receiving tube and a group of transmitting tubes are uniformly arranged on the opposite sides of two plate surfaces of a stator and a rotor of the non-contact communication slip ring along the circumferential direction, and the opposite group of transmitting tubes and the receiving tubes are mutually matched.
S2: and uniformly and circumferentially arranging the receiving tubes on the first plate surface on which the transmitting tubes are arranged, wherein the receiving tubes are positioned on the symmetry axis of one group of two adjacent transmitting tubes.
S3: and calculating the minimum circumference radius of the arrangement of the receiving tubes of the first plate surface for avoiding the reflection interference of the transmitting tubes according to the reflection coefficient of the second plate surface, the transmitting power and the extinction ratio of the transmitting tubes. The method specifically comprises the following steps:
according to the reflection coefficient K of the second plate surface, the transmitting power P and the extinction ratio E of the transmitting tube, the reflected light intensity W2 received by the receiving tube is as follows:
(R2-R1)＝L*tan(C/2)
W2＝2*P*K*cos(C/2)/[2*L/cos(C/2)] 2
W1/E+W2<Q*0.8
in the formula, C is an incident and reflection included angle when the transmitting tube reflects; r1 is the circumferential radius of the arrangement of the transmitting tubes on the first plate surface; r2 is the circumferential radius of the arrangement of the receiving pipes on the first plate surface; l is the distance between the two plate surfaces; w1 is the light intensity received by the second plate surface receiving tube; q is the light intensity judgment threshold value of the receiving tube, and when the light intensity judgment threshold value is less than 80%, the receiving tube is reliable and has no receiving.
And calculating the minimum circumferential radius R2 of the arrangement of the receiving pipes of the first plate surface for avoiding the reflection interference of the transmitting pipes according to the formula.
S4: and calculating the maximum circumferential radius R2 of the transmitting tube on the first plate surface, which avoids reflection interference, by taking the circumferential radius R1 of the transmitting tube on the first plate surface as the circumferential radius R1 of the receiving tube on the second plate surface.
S5: and determining the circumferential radius R2 of the arrangement of the receiving pipe of the first plate surface and the transmitting pipe of the second plate surface according to the range of R2.
Example 3
Selecting a group of parameters:
emission circumference radius R1=13.5mm (deduction emission tube width/2, actual via hole)<12 mm); launch and receive tube angle DA = PDA =120 °; PCB ink reflectance K =20% (brilliant black); the luminous power P =2.2mW/sr of the emission tube, and the extinction ratio E =1.75; receiving tube judgment threshold Q =2.5mW/cm 2 (ii) a Substituting the above parameters into the following formula:
R1*sin(A/2)＝L*tan(B/2)
B<DA,B<PDA
W1＝2*P*cos(B/2)/[L/cos(B/2)] 2
(R2-R1)＝L*tan(C/2)
W2＝2*P*K*cos(C/2)/[2*L/cos(C/2)] 2
W1>Q*1.2,W1/E+W2<Q*0.8
N*A>＝180
can be solved to
A <35 °, such as:
N＝6,A＝30°，L＝11mm；
continuously resolving to obtain R2-R1>5.8, namely R2>19.3mm;
considering duplex communication, the same principle of using R2 as the circumference on which the transmission is located can result in R2<20mm; here, let R2=19.5mm. Finally, the optics arrangement is as shown in fig. 1.
Wherein:
a rotor plate: 6 transmitting tubes are positioned on the circumference with the radius of 13.5mm, and the included angle of the circle centers among the transmitting tubes is 30 degrees;
the 2 receiving tubes are positioned on the circumference with the radius of 19.5mm and are symmetrically arranged, and an included angle of 15 degrees is formed between one receiving tube and the center of the adjacent transmitting tube.
A stator plate: 6 transmitting tubes are positioned on the circumference with the radius of 19.5mm, and the included angle of the circle centers among the transmitting tubes is 30 degrees;
the 2 receiving tubes are positioned on the circumference with the radius of 13.5mm and are symmetrically arranged, and an included angle of 15 degrees is formed between one receiving tube and the center of the adjacent transmitting tube.
By the arrangement method, the rotor plate and the stator plate can be exchanged without influencing the optical communication effect.
Although the above arrangement method is primarily used for optical communication via slip rings, it is equally applicable to non-via slip rings. Even when R1 is set to be 0, an optimal arrangement method of the non-via slip ring can be obtained.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The optical device arrangement method of the non-contact communication slip ring comprises a stator and a rotor which are opposite, wherein at least one receiving tube and a group of transmitting tubes are uniformly arranged on one side, opposite to two plate surfaces of the stator and the rotor, of the non-contact communication slip ring along the circumferential direction; the two plate surfaces comprise a first plate surface and a second plate surface;
the method is characterized by comprising the following steps:
during simplex communication, determining the arrangement circle radius of the transmitting tube and the receiving tube, the angle of the allowable transmitting range of the transmitting tube, the angle of the allowable receiving range of the receiving tube, the transmitting power of the transmitting tube and the light intensity judgment threshold of the receiving tube;
determining a constraint comprising: when the receiving tube rotates to a position between two adjacent transmitting tubes, the opening angle formed by the two transmitting tubes and the receiving tube is smaller than the angle of the transmitting tube in the allowable transmitting range and the angle of the receiving tube in the allowable receiving range; determining that the light intensity received by the receiving tube is greater than the judgment threshold value of the receiving tube according to the transmitting power of the transmitting tube;
calculating the range of the distance between the two plate surfaces and the maximum value of the central angle between the adjacent transmitting tubes according to the constraint conditions, and determining the distance between the two plate surfaces and the central angle between the adjacent transmitting tubes according to the maximum value;
uniformly and circumferentially arranging the receiving tubes on the second plate surface, and determining the number of the transmitting tubes according to the central angle between the adjacent transmitting tubes and the number of the receiving tubes; arranging the launching tubes on the first plate surface according to the space between the plate surfaces, the circumferential radius of the launching tubes, the number of the launching tubes and the central angle between the adjacent launching tubes;
further comprising:
during duplex communication, the receiving tubes are uniformly and circumferentially arranged on the first plate surface on which the transmitting tubes are arranged and are positioned on the symmetry axis of one group of two adjacent transmitting tubes;
calculating the minimum circumference radius of the arrangement of the receiving tubes of the first plate surface, which avoids the reflection interference of the transmitting tube, according to the reflection coefficient of the second plate surface, the transmitting power and the extinction ratio of the transmitting tube;
taking the circumferential radius of the transmitting tube arrangement arranged on the first plate surface as the circumferential radius of the receiving tube arrangement of the second plate surface, and calculating the maximum circumferential radius of the transmitting tube of the first plate surface, which avoids reflection interference;
determining the arrangement circumferential radius of the receiving pipe of the first board surface and the second board surface transmitting pipe according to the minimum circumferential radius of the arrangement of the receiving pipe of the first board surface and the maximum circumferential radius of the arrangement of the second board surface transmitting pipe;
during simplex communication, the calculation of the distance range of the two plate surfaces and the maximum value of the central angle between the adjacent transmitting tubes comprises the following steps:
determining the arrangement circumference radius R1 of the transmitting tubes and the receiving tubes, when the receiving tubes rotate to the position between two adjacent transmitting tubes, the opening angle formed by the two transmitting tubes and the receiving tubes is smaller than the angle of the allowable receiving range of the transmitting tubes and the receiving tubes, and then the distance L between two plate surfaces and the central angle A between the adjacent transmitting tubes need to meet the following requirements:
R1*sin(A/2)＝L*tan(B/2)
B<DA,B<PDA
in the formula, B is an opening angle between the transmitting tubes of the two first plate surfaces and the receiving tube of the second plate surface; DA is an angle of an allowable transmitting range of the transmitting tube; the PDA is the angle of the allowable receiving range of the receiving tube;
the light intensity W1 received by the receiving tube needs to be larger than the judgment threshold value of the receiving tube, then:
W1＝2*P*cos(B/2)/[L/cos(B/2)] 2
W1>Q*1.2
in the formula, P is the transmitting power of the transmitting tube; q is the light intensity judgment threshold of the receiving tube, and reliable receiving is carried out when the light intensity judgment threshold is more than 120 percent;
obtaining the distance range of the two plate surfaces and the maximum value of the central angle A between the adjacent transmitting tubes according to the formula through simultaneous solving, and determining the distance L between the two plate surfaces and the central angle A between the adjacent transmitting tubes according to the processing requirement;
when the receiver tube of every face is two, then:
2*N*A≥360°
solving the number N of the transmitting tubes according to the formula;
during duplex communication, the calculation of the circumferential radius of the arrangement of the receiving tube of the first plate surface and the transmitting tube of the second plate surface comprises the following steps:
according to the reflection coefficient K of the second plate surface, the transmitting power P and the extinction ratio E of the transmitting tube, the reflected light intensity W2 received by the receiving tube is as follows:
(R2-R1)＝L*tan(C/2)
W2＝2*P*K*cos(C/2)/[2*L/cos(C/2)] 2
W1/E+W2<Q*0.8
in the formula, C is an incident and reflection included angle when the transmitting tube reflects; r1 is the circumferential radius of the arrangement of the transmitting tubes on the first plate surface; r2 is the circumferential radius of the arrangement of the receiving pipes on the first plate surface; l is the distance between the two plate surfaces; w1 is the light intensity received by the second plate surface receiving tube; q is the light intensity judgment threshold of the receiving tube, and when the light intensity judgment threshold is less than 80%, the receiving tube is reliable and has no receiving;
calculating the minimum circumferential radius R2 of the arrangement of the receiving pipes of the first plate surface for avoiding the reflection interference of the transmitting pipe according to the formula;
taking the circumferential radius R1 of the emission tube arrangement arranged on the first plate surface as the circumferential radius R1 of the receiving tube arrangement of the second plate surface, and calculating the maximum circumferential radius R2 of the emission tube of the first plate surface, which avoids reflection interference;
and determining the circumferential radius R2 of the arrangement of the receiving pipe of the first plate surface and the transmitting pipe of the second plate surface according to the range of R2.
2. The method for arranging optical devices of the non-contact communication slip ring according to claim 1, wherein a through hole is formed in the center of a stator and a rotor of the non-contact communication slip ring.
3. A contactless communication slip ring to which the optical device arranging method of the contactless communication slip ring according to any one of claims 1 to 2 is applied, comprising:
the stator is provided with at least one receiving tube and a group of transmitting tubes which are uniformly arranged on one side along the circumferential direction;
and the rotor is provided with at least one receiving pipe and a group of transmitting pipes which are uniformly arranged on one side adjacent to the stator along the circumferential direction.
4. The non-contact communication slip ring of claim 3, wherein 6 transmitting tubes are arranged on the circumference of the rotor with the radius of 13.5mm on the plate surface, and the included angle between the centers of adjacent transmitting tubes is 30 degrees; 2 receiving tubes are uniformly arranged on the surface of the rotor along the circumference with the radius of 19.5mm, and the included angle between one receiving tube and the center of an adjacent transmitting tube is 15 degrees;
6 transmitting tubes are arranged on the surface of the stator along the circumference with the radius of 19.5mm, and the included angle of the circle centers between the adjacent transmitting tubes is 30 degrees; 2 receiving tubes are uniformly arranged on the surface of the stator along the circumference with the radius of 13.5mm, and the included angle between one receiving tube and the circle center of the adjacent transmitting tube is 15 degrees.
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| CN117650843B (en) * | 2024-01-30 | 2024-04-30 | 陕西旋星电子科技有限公司 | Non-contact optical communication slip ring and optical device side surface arrangement method thereof |
| CN117692064B (en) * | 2024-01-30 | 2024-04-30 | 陕西旋星电子科技有限公司 | Non-contact optical communication slip ring with light blocking ring and optical device arrangement method thereof |
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| US6353693B1 (en) * | 1999-05-31 | 2002-03-05 | Sanyo Electric Co., Ltd. | Optical communication device and slip ring unit for an electronic component-mounting apparatus |
| JP3612264B2 (en) * | 2000-07-18 | 2005-01-19 | 株式会社東芝 | Optical transmission device between rotating body and fixed body |
| JP2012209747A (en) * | 2011-03-29 | 2012-10-25 | Seiko Epson Corp | Non-contact communication device, communication method, and robot device |
| US10326561B2 (en) * | 2015-06-24 | 2019-06-18 | Toshiba Medical Systems Corporation | Mirror-ring assembly for bi-directional optical communication between a rotor and a stator |
| JP2018013928A (en) * | 2016-07-20 | 2018-01-25 | 株式会社東海理化電機製作所 | Rotary connector |
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2022
- 2022-06-27 CN CN202210732520.6A patent/CN115037368B/en active Active
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