WO2013107130A1

WO2013107130A1 - Light path switch and control method therefor

Info

Publication number: WO2013107130A1
Application number: PCT/CN2012/074912
Authority: WO
Inventors: 周建明; 刘志琼; 杨艳玲
Original assignee: 中兴通讯股份有限公司
Priority date: 2012-01-19
Filing date: 2012-04-28
Publication date: 2013-07-25
Also published as: CN103217746B; CN103217746A

Abstract

A light path switch comprises a plurality of stationary butt terminals (22) which are positioned on the surface of a sphere, perpendicular to the surface of the sphere, and respectively used for fixing one butt end of one butt optical fibre of a plurality of butt optical fibres; and moving butt terminals (24) which are positioned on a rotating device (26) inside the sphere and used for fixing the other butt end of the butt optical fibre. The rotating device (26) is used for butting the moving butt terminals (24) with the stationary butt terminals (22) of the butt optical fibres needing butting in the plurality of butt optical fibres through rotation. Also provided is a control method for the light path switch. The light path switch has no insertion loss over the whole course and is convenient for expansion.

Description

TECHNICAL FIELD The present invention relates to the field of communications, and in particular to an optical path switch and a control method thereof. BACKGROUND An optical path switch is used to implement interconnection between an optical fiber and an optical fiber. In the related art, a mirror and a light splitting device are mostly used to form an exchange optical path. FIG. 1 is a schematic diagram of an optical switching connection according to the related art. As shown in FIG. 1, such a design has defects such as serious insertion loss of a light splitting device and difficulty in expansion. SUMMARY OF THE INVENTION The embodiments of the present invention provide an optical path switch and a control method thereof, so as to solve at least the problem that the optical path switch in the related art causes a large insertion loss and is inconvenient to expand. An embodiment of the present invention provides an optical path switch, including: a plurality of static docking terminals, located on a surface of the sphere and perpendicular to a surface of the sphere, for respectively fixing a butt end of one of the plurality of docking fibers; a terminal, located on a rotating device inside the ball, for fixing another butting end of the docking fiber; the rotating device is configured to rotate the moving docking terminal to be connected with the stationary docking terminal to which the docking fiber to be docked in the plurality of docking fibers belongs . The rotating device comprises: a vertical rotating rod for rotating in a vertical plane, and a moving docking terminal is mounted on the end of the vertical rotating rod; a horizontal rotating rod, wherein the middle portion is movably connected with the middle portion of the vertical rotating rod, The vertical rotating rod is rotated in a horizontal plane. A first motion docking terminal as a light transmitting end is mounted on a first end of the vertical rotating lever, and a second motion docking terminal as a light receiving end is mounted on a second end of the vertical rotating lever. The docking fiber passes through the center of the vertical rotating rod and the horizontal rotating rod. The rotating device further includes: a fixed base located at an upper end of the horizontal rotating rod for fixing the horizontal rotating rod; and a rotating base located at a lower end of the horizontal rotating rod for supporting the horizontal rotating rod. The horizontal rotating rod and the rotating base are mounted with electromagnetic or permanent magnetic poles of the same polarity. The horizontal rotary lever includes a tapered head, and the fixed base and the rotary base each include a tapered groove corresponding to the tapered head. The static docking terminal and the sport docking terminal are mounted with electromagnetic induction heads or electrostatic induction heads of opposite polarities. The device further includes: a tapered guiding head at a front end of the movable docking terminal; and a tapered guiding groove at a front end of the stationary butting terminal for interlocking with the tapered guiding head. The apparatus further includes: a self-resetting device located on the movable docking terminal for free separation of the interlocking of the tapered guide head and the tapered guide groove. Embodiments of the present invention provide a method for controlling an optical path switch, including determining an offset direction and an offset between a motion docking terminal and a stationary docking terminal to which a docking fiber to be docked belongs; according to an offset direction and an offset, The plurality of stationary docking terminals are powered on and off, and the movable docking terminals are brought into contact with the stationary docking terminals to which the docking fibers to be docked belong. According to the offset direction and the offset, the plurality of static docking terminals are turned on and off, and the driving docking terminal is connected with the stationary docking terminal to which the docking fiber to be docked belongs to: the motion is determined according to the offset direction and the offset. Longitude displacement and latitude displacement between the docking terminal and the stationary docking terminal to which the docking fiber to be docked belongs; according to the longitude displacement and the latitude displacement, the plurality of stationary docking terminals are turned on and off, and the moving docking terminal and the docking fiber to be docked are driven. The associated stationary docking terminals are opposite each other. According to the longitude displacement and the latitude displacement, the plurality of stationary docking terminals are turned on and off, and the driving docking terminal is connected with the stationary docking terminal to which the docking fiber to be docked belongs to: the plurality of stationary docking terminals are turned on and off according to the longitude displacement. Electric, driving the moving docking terminal to rotate in the horizontal plane until the moving docking terminal has the same longitude as the stationary docking terminal to which the docking fiber to be docked belongs; according to the latitude displacement, the plurality of stationary docking terminals are turned on and off, and the moving docking terminal is driven Rotate in a vertical plane until the sport docking terminal is mated with the stationary docking terminal to which the docking fiber to be docked belongs. According to the longitude displacement and the latitude displacement, the plurality of stationary docking terminals are turned on and off, and the driving docking terminal is connected with the stationary docking terminal to which the butt fiber to be docked belongs to: the plurality of stationary docking terminals are turned on and off according to the latitude displacement Electric, driving the moving docking terminal to rotate in a vertical plane until the moving docking terminal has the same latitude as the stationary docking terminal to which the docking fiber to be docked belongs; according to the longitude displacement, the plurality of stationary docking terminals are turned on and off to drive the motion docking The terminal rotates in a horizontal plane until the sport docking terminal is mated with the stationary docking terminal to which the docking fiber to be docked belongs. The movement of the sports docking terminal is a stepping motion mode. The embodiment of the present invention solves the problem that the optical path switch in the related art causes a large insertion loss by using a rotating device in the ball to realize that the moving docking terminal is connected with the static docking terminal to which the docking fiber that needs to be docked in the plurality of docking fibers is connected, and The problem of easy expansion can achieve no insertion loss in the whole process, and it is convenient to expand the capacity of the exchange capacity. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a schematic diagram of an optical path switch according to the related art; FIG. 2 is a schematic diagram of an optical path switch according to an embodiment of the present invention; FIG. 3 is a schematic diagram of an optical path switch according to a preferred embodiment of the present invention; FIG. 5 is a schematic diagram of a vertebral body self-locking docking joint in an optical path switch in accordance with a preferred embodiment of the present invention; FIG. 6 is an optical path in accordance with an embodiment of the present invention. Flowchart of a control method of a switch; Figure 7 is a flow chart of a method of controlling an optical path switch in accordance with a preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. An embodiment of the present invention provides an optical path switch. FIG. 2 is a schematic diagram of an optical path switch according to an embodiment of the present invention. As shown in FIG. 2, the present invention includes a stationary docking terminal 22, a motion docking terminal 24, and a rotating device 26. The structure is described in detail below. a plurality of stationary docking terminals 22, located on the surface of the sphere and perpendicular to the surface of the sphere, for respectively securing a butt end of one of the plurality of docking fibers; the motion docking terminal 24, located on the rotating device 26 inside the sphere The other docking end for fixing the docking fiber; the rotating device 26 is configured to rotate the moving docking terminal 24 to abut the stationary docking terminal 22 to which the docking fiber to be docked in the plurality of docking fibers belongs. In the related art, the optical path switch uses an optical coupling device, which causes a large insertion loss and is inconvenient to expand. In the present invention, the moving docking terminal 24 is connected to the stationary docking terminal 22 to which the docking fiber to be docked in the plurality of docking fibers is connected by using the rotating device 26 in the ball, and the whole process has no insertion loss and is convenient for expansion. In order to more accurately realize that the sport docking terminal 24 is in contact with the stationary docking terminal 22, the rotating device 26 can be realized by a combination of the vertical rotating lever 2 and the horizontal rotating lever 3. Wherein the end portion of the vertical rotating rod 2 is mounted with the motion docking terminal 24 and can drive the motion docking terminal 24 to rotate ±360 degrees in a vertical plane, and the middle portion of the horizontal rotating rod 3 is movably connected with the middle portion of the vertical rotating rod 2 The vertical rotating rod 2 can be rotated in the horizontal plane by ±360 degrees while rotating along its own axis. It should be noted that the horizontal rotating rod 3 may be a rod passing through a horizontal rotation axis of the sphere (a horizontal rotation axis, that is, a line perpendicular to the horizontal plane and passing through the center of the sphere), thereby ensuring that the vertical rotating rod 2 is in the horizontal plane. The rotation is more flexible; the horizontal rotating rod 3 can also be composed of a plurality of rods symmetrical to the horizontal axis of rotation, thereby ensuring that the rotation of the vertical rotating rod in the horizontal plane is more stable. Further, the present invention also provides various improvements to the above-described rotating device 26 realized by the combination of the vertical rotating lever 2 and the horizontal rotating lever 3, which will be described in detail below. 3 is a schematic diagram of an optical path switch, as shown in FIG. 3, in accordance with a preferred embodiment of the present invention.

(1) Improvements related to vertical rotary bars

A. The vertical rotating rod 2 is of equal length design at both ends to ensure the rotation of the vertical rotating rod 2 in the horizontal plane is more stable.

B. In order to reduce the number of switching bodies used by the optical switch, the moving docking terminal 24 installed at both ends of the vertical rotating rod 2 can be used as the optical transmitting end and the optical receiving end, respectively, and the stationary docking terminal 22 and the moving docking terminal 24 are respectively Corresponding combination installation, so that the two ends of the same vertical rotating rod are aligned with the same group of optical transceiver terminals, that is, if the first end of the vertical rotating rod 2 is aligned with the light transmitting end, the second of the vertical rotating rod 2 The end is aligned with the light receiving end. Through such a design, simultaneous transmission and reception can be realized within the same sphere, which reduces the complexity of the control circuit and ensures the reliability of the optical path switch (the probability of error in the convergence of the intersection is reduced by 50%).

C. In order to achieve better all-round rotation, the docking fiber is mounted on the central axis of the moving docking terminal 24, passes through the center of the vertical rotating rod 2 and the horizontal rotating rod 3, and leads the sphere to be connected to the outside.

(2) Improvements related to horizontal rotary bars A. The upper end of the horizontal rotating rod 3 is movably connected with the fixed base 14 mounted on the top of the sphere, and the lower end of the horizontal rotating rod 3 is movably connected with the rotating base 13 mounted on the bottom of the sphere, and the central axes of the two bases are connected. Passing through the center point of the sphere, it is possible to freely rotate the horizontal rotating rod 3 in the rotating base.

B. The electromagnetic or permanent magnetic poles of the same polarity are mounted on the lower end 32 of the horizontal rotating rod 3 and the rotating base 13 to cancel the gravity of the horizontal rotating rod 3 by mutually repelling, thereby realizing the suspension effect of the horizontal rotating rod 3, and reducing The frictional force of the small horizontal rotating lever 3 relative to the rotation of the base 13 is rotated.

C. FIG. 4 is a schematic diagram of a horizontal base in an optical circuit switch according to a preferred embodiment of the present invention. As shown in FIG. 4, both ends of the horizontal rotating rod 3 are tapered, that is, the horizontal rotating rod 3 is mounted with a tapered head. The fixed base 14 and the rotating base 13 are each mounted with a tapered groove corresponding to the tapered head, thereby reducing the contact area of the horizontal rotating rod 3 with the base, and ensuring that the horizontal rotating rod 3 can rotate freely and reliably within the base. .

(3) Improvements related to the docking of the sport docking terminal 24 and the stationary docking terminal 22

A. In order to realize the safe and free docking of the sports docking terminal 24 and the stationary docking terminal 22, the stationary butting terminal 22 and the moving docking terminal 24 are mounted with the electromagnetic induction head 242 or the electrostatic induction head 242 of opposite polarity. When working, the principle of the same-sex repelling opposite sex is used to achieve the intersection of the docking terminals. B. In order to achieve accurate docking and reduce docking implementation cost, the motion pair joint and the static joint joint adopt a vertebral interlocking design, and FIG. 5 is a vertebral body self-locking docking joint in the optical path switch according to a preferred embodiment of the present invention. As shown in FIG. 5, a tapered guiding head 241 is used at the front end of the moving butt terminal 24, and a tapered guiding groove 221 capable of interlocking with the tapered guiding head 241 is used at the front end of the stationary butting terminal 22, thereby ensuring Under the action of gravity, the displacement is shifted within a controllable range to achieve precise docking and interlocking. C. The self-resetting device 243 for freely separating the interlocking of the tapered guiding head 241 and the tapered guiding groove 221 is also mounted on the moving docking terminal 24, thereby facilitating the unlocking between the movable docking terminal 24 and the stationary docking terminal 22. . The embodiment of the invention further provides a method for controlling an optical path switch, which can be used to control the optical path switch. FIG. 6 is a flowchart of a method for controlling an optical path switch according to an embodiment of the present invention. As shown in FIG. 6, the following steps S602 to S604 are included. Step S602, determining an offset direction and an offset between the motion docking terminal and the stationary docking terminal to which the docking fiber to be docked belongs. Step S604, according to the offset direction and the offset amount, the plurality of static docking terminals are turned on and off, and the motion docking terminal is brought into contact with the stationary docking terminal to which the docking fiber to be docked belongs. In the embodiment of the invention, by rotating and disconnecting a plurality of stationary docking terminals, the movable docking terminal is connected with the stationary docking terminal to which the docking fiber to be docked belongs, so that the movement of the motion docking terminal can be controlled to be stable and reliable. Preferably, in step S604, the longitude displacement and the latitude displacement between the motion docking terminal and the stationary docking terminal to which the docking fiber to be docked belongs may be determined according to the offset direction and the offset amount, and then according to the longitude displacement and the latitude displacement. And turning on and off a plurality of static docking terminals, and driving the motion docking terminal to abut the stationary docking terminal to which the docking fiber to be docked belongs. The preferred embodiment can be applied to the above-mentioned optical path switch, and in particular, can be applied to the above-mentioned optical path switch using a rotating device in which a vertical rotating lever and a horizontal rotating lever are combined, and in the optical path switch, the preferred implementation is adopted. The longitude displacement in the example controls the rotation direction and the rotation amount of the horizontal rotating rod, and the latitude displacement in the preferred embodiment controls the rotation direction and the rotation amount of the vertical rotating rod, so that the movement of the motion docking terminal can be controlled accurately and reliably. Next, how to apply the present latitude and longitude control method to the above-mentioned optical path switch using a rotating device in which a vertical rotating lever and a horizontal rotating lever are combined will be described in detail by way of Example 1 and Example 2. In the first example, according to the longitude displacement, a plurality of static docking terminals are turned on and off, and the moving docking terminal is rotated in a horizontal plane until the longitude of the moving docking terminal and the stationary docking terminal to which the docking fiber to be docked belongs is the same; according to the latitude displacement, The plurality of stationary docking terminals are turned on and off to drive the motion docking terminal to rotate in a vertical plane until the motion docking terminal is opposite to the stationary docking terminal to which the docking fiber to be docked belongs. In the second example, according to the longitude displacement and the latitude displacement, the plurality of stationary docking terminals are turned on and off, and the driving docking terminal is connected with the stationary docking terminal to which the docking fiber to be docked belongs to: a plurality of stationary docking terminals according to the latitude displacement Turning on and off, driving the motion docking terminal to rotate in a vertical plane until the moving docking terminal has the same latitude as the stationary docking terminal to which the docking fiber to be docked belongs; according to the longitude displacement, the plurality of stationary docking terminals are turned on and off, The motion docking terminal is rotated in a horizontal plane until the motion docking terminal is opposite to the stationary docking terminal to which the docking fiber to be docked belongs. It should be noted that, in order to ensure the reliable movement of the moving docking terminal, the electromagnetic circuit or the electrostatic circuit of several stationary docking terminals is controlled by the principle of stepping electromagnetic or stepping static electricity, and the stepping control of the circuit of the stationary docking terminal is adopted. The sport docking terminal continues to move steadily to achieve precise positional positioning. In order to explain in detail the control method of the above optical path switch, the present invention also provides a preferred embodiment describing the control process thereof. FIG. 7 is a flowchart of a method for controlling an optical path switch according to a preferred embodiment of the present invention. As shown in FIG. 7, the following steps S702 to S724 are included. In step S702, initialization is performed. Step S704, determining whether there is a request. If yes, go to step S706; if no, repeat step S704. Step S706, querying the latitude and longitude of the current location. It should be noted that the optical path switch may adopt an encoding/decoding technology to position all the stationary docking terminals by latitude and longitude, encode the latitude and longitude information, and the encoded information uniquely corresponds to the stationary docking terminal. When the control circuit receives the exchange command, it will use it. Corresponding latitude and longitude address information is addressed. Step S708, querying the demand location latitude and longitude. In step S710, the calculation is relatively inferior to the preset latitude and longitude. Step S712, calculating a longitude displacement path. Step S714, calculating a longitude displacement path. Step S716, the latitude position is addressed. Step S718, the longitude position is addressed. In step S720, position verification is performed. In step S722, it is determined whether the location is correct. If yes, step S724 is performed; if no, step S704 is performed. Step S724, ending. In addition, in order to further ensure the reliability of the optical path switch, the present invention can also track the latitude and longitude displacement trajectory. The tracking principle is that the trajectory of the moving docking terminal is monitored in real time through the receiving optical feedback circuit of the optical signal receiving end, once the motion deviation occurs. Then, by retrieving the motion track of the motion docking terminal, the displacement variable is recalculated, and the displacement of the moving butt terminal is corrected. It should be noted that the steps shown in the flowchart of the accompanying drawings may be performed in a computer system such as a set of computer executable instructions, and, although the logical order is shown in the flowchart, in some cases, The steps shown or described may be performed in an order different than that herein. In summary, according to the above embodiments of the present invention, an optical path switch and a control method thereof are provided. By using a rotating device in the ball, the moving docking terminal is connected with the stationary docking terminal to which the docking fiber that needs to be docked in the plurality of docking fibers belongs, so that the entire process has no insertion loss and is convenient for expansion. Industrial Applicability The technical solution of the present invention has industrial applicability. In the embodiment of the present invention, the moving docking terminal is connected with the stationary docking terminal to which the docking optical fiber to be docked in the plurality of docking fibers is connected by using the rotating device in the ball, so that the whole process has no insertion loss and is convenient for expansion. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

1. An optical path switch, comprising:

a plurality of stationary docking terminals, located on a surface of the sphere and perpendicular to a surface of the sphere, for respectively fixing a butt end of one of the plurality of docking fibers;

a sports docking terminal, located on a rotating device inside the ball, for fixing another butt end of the docking fiber;

The rotating device is configured to rotate the docking terminal to abut the stationary docking terminal to which the docking fiber to be docked in the plurality of docking fibers belongs.

2. The optical circuit switch according to claim 1, wherein the rotating device comprises:

a vertical rotating rod for rotating in a vertical plane, and the moving docking terminal is mounted at an end of the vertical rotating rod;

a horizontal rotating rod, wherein a middle portion is movably coupled to a middle portion of the vertical rotating rod for rotating the vertical rotating rod in a horizontal plane.

3. The optical circuit switch according to claim 2, wherein a first motion docking terminal as a light transmitting end is mounted on a first end of the vertical rotating lever, and a second end of the vertical rotating lever A second motion docking terminal as a light receiving end is mounted.

4. The optical circuit switch of claim 2, wherein the docking fiber passes through a center of the vertical rotating lever and the horizontal rotating lever.

The optical path switch according to claim 2, wherein the rotating device further comprises:

a fixed base at an upper end of the horizontal rotating rod for fixing the horizontal rotating rod; a rotating base located at a lower end of the horizontal rotating rod for supporting the horizontal rotating rod.

6. The optical circuit switch according to claim 5, wherein the horizontal rotating lever and the rotating base are mounted with electromagnetic or permanent magnetic poles of the same polarity. The optical circuit switch according to claim 5, wherein said horizontal rotating lever comprises a tapered head, and said fixed base and said rotating base each include a tapered groove corresponding to said tapered head.

The optical circuit switch according to any one of claims 1 to 7, wherein the stationary docking terminal and the motion docking terminal are mounted with electromagnetic induction heads or electrostatic induction heads of opposite polarities.

The optical path switch according to any one of claims 1 to 7, further comprising: a tapered guiding head located at a front end of the moving docking terminal;

A tapered guiding groove is located at a front end of the stationary docking terminal for interlocking with the tapered guiding head.

10. The optical circuit switch according to claim 9, further comprising: a self-reset device located on the moving docking terminal for free separation of the interlocking of the tapered guiding head and the tapered guiding slot .

11. The method of controlling an optical circuit switch according to any one of claims 1 to 10, comprising: determining an offset direction and an offset between a motion docking terminal and a stationary docking terminal to which the docking fiber to be docked belongs;

And a plurality of stationary docking terminals are turned on and off according to the offset direction and the offset amount, and the motion docking terminal is brought into contact with the stationary docking terminal to which the docking fiber to be docked belongs.

12. The method according to claim 11, wherein, according to the offset direction and the offset amount, a plurality of static docking terminals are turned on and off, and the docking of the motion docking terminal and the docking needs to be docked The docking of the stationary docking terminals to which the optical fibers belong includes:

Determining, according to the offset direction and the offset, a longitude displacement and a latitude displacement between the motion docking terminal and the stationary docking terminal to which the docking fiber to be docked belongs;

And a plurality of stationary docking terminals are turned on and off according to the longitude displacement and the latitude displacement, and the moving docking terminal is brought into contact with the stationary docking terminal to which the docking optical fiber to be docked belongs.

The method according to claim 12, wherein, according to the longitude displacement and the latitude displacement, a plurality of static docking terminals are turned on and off, and the moving docking terminal and the docking optical fiber to be docked are driven The docking of the stationary docking terminals includes:

Turning on and off the plurality of stationary docking terminals according to the longitude displacement, and driving the motion docking terminal to rotate in a horizontal plane until the longitude of the stationary docking terminal to which the docking terminal and the docking fiber to be docked belong ;

Disconnecting the plurality of stationary docking terminals according to the latitude displacement, and driving the motion docking terminal to rotate in a vertical plane until the motion docking terminal is opposite to the stationary docking terminal to which the docking fiber to be docked belongs Pick up.

Disconnecting a plurality of stationary docking terminals according to the latitude displacement, and driving the motion docking terminal to rotate in a vertical plane until the motion docking terminal and the stationary docking terminal to which the docking fiber to be docked belongs Same latitude;

And rotating the plurality of stationary docking terminals according to the longitude displacement, and driving the motion docking terminal to rotate in a horizontal plane until the motion docking terminal is opposite to the stationary docking terminal to which the docking fiber to be docked belongs.

The method according to any one of claims 11 to 14, wherein the motion of the motion docking terminal is a step motion mode.