JP2731896B2 - Optical switch device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical switch device capable of easily grasping the operation state of an optical switch.

2. Description of the Related Art Generally, an optical switch is inserted and connected to an optical transmission line in order to switch the optical transmission direction. It is possible to mechanically operate a prism or the like provided inside the optical switch to change the optical transmission direction. You can do it. That is, in FIG. 5, a node 32 and an optical switch 33 are connected to an optical transmission line 31 composed of an optical fiber. The optical switch 33 is shown in FIG.
As shown in (a), the light from the input end 31a of the optical transmission line 31 is not input to the node 32, and the optical switch 33 is turned on.
5 (b), the light from the input end 31a of the optical transmission line 31 is transmitted through the optical switch 33 to the node 32, as shown in FIG. To an output state 31b of the optical transmission line 31 from the node 32 via the optical switch 33 in some cases. As described above, the bypass state indicates a state in which the optical switch 33 is operating so as to disconnect the node 32 from the optical transmission path 31, and the operating state indicates that the optical switch operates so that the node 32 is incorporated in the optical transmission path 31. It shows the state that it is doing. Also,
A mechanically operated prism or the like is provided inside the optical switch 33, and the position of the prism is changed according to a designated bypass state or an operating state, so that light on the transmission path is directed in a predetermined direction. Is configured to be controlled.

However, in the above-mentioned conventional optical switch device, there is no indication of the operating state, and it is not possible to distinguish between operating and non-operating. , Could not identify the operating state. Further, even if an actual malfunction occurs, it is not known whether or not the malfunction is present because the display is not displayed. Could not be identified as a malfunction. In order to check the operation state, it was necessary to unplug the optical connector once connected to the optical transmission line and check using an optical power meter or the like. At this time, dust and the like may adhere to the optical connector and the like, which may hinder normal operation and may cause problems in workability and safety. SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide an optical switch device capable of displaying an operation state or an operation failure state of an optical switch with a simple configuration.

An optical switch according to the present invention is provided.
The switching device is a rotatable switch between the input end and the output end of the optical transmission line.
An optical transmission path switching movable element that is a rhythm
At a plurality of stop positions of the optical transmission line switching movable element.
Correspondingly, the transmission light is transmitted from the input end to the output end of the optical transmission line.
Optical switch device configured to switch optical transmission paths
In the optical transmission line switching movable element provided in
It consists of a movable contact and a fixed contact provided for each stop position.
The movable contact and the fixed contact in the stop position.
Stop signal generation that generates a stop signal by connecting
Means generated by the stop state signal generating means.
If the operating condition is good according to the signal, the display
Status display for operating and bypass status
And also memorize this state,
In the case of a failure, an operation failure display and the stored failure are displayed.
Comprising display means for displaying the status immediately before
I have. Furthermore, the optical switch device according to the present invention has at least
Can also have a rectangular cross section between the optical transmission line consisting of a pair of optical fibers.
A rotating prism body is inserted, and this rotatable prism body is
Extending the transmission light from one of the optical fibers in opposition
A so-called bypass state for transmission to the other optical fiber
The first stop position and the rotatable prism body by 45 °
Transmission from one side of the optical fiber
Refracts light and transmits it to the other optical fiber that is not facing
Set to the second stop position for the so-called operating state
An optical switch device configured to
A first contact point provided at a corner of the rotating prism body,
In the vicinity of the rotation orbit of the rotatable prism body,
And one provided at a position corresponding to the second stop position.
A pair of second contacts, and the first contact is connected to the second contact.
Stopped state of the rotatable prism body by connection with each
A signal generating means, the raw by the stop state signal generating means
If the operation status is good according to the generated signal,
Display and operation status or bypass status
Display the status and memorize this status together.
If the operation status is defective, display the operation failure and store
If the operation state immediately before the
Transition from port state to bypass state
When the display is performed and the previous state is the bypass state
Malfunction of transition from bypass state to operation state
Display means for displaying the status
You. Further, the optical switch device according to the present invention is provided with an optical transmission line.
Optical transmission path cutting with rotatable prisms at input and output ends
A replacement movable element, wherein the optical transmission path switching movable element is disposed.
The transmission light corresponding to the plurality of stop states of the
To switch the optical transmission path from input end to output end
The optical transmission path switching
At least the output that changes according to the stop position of the movable element
This is a signal corresponding to the transmission light at the end, from the input end of the optical transmission path.
Transmitted light to the output end of the optical transmission line extending oppositely.
A signal indicating a so-called bypass state,
The transmission light from the input end is transmitted to the optical transmission path switching movable element.
Switched to the output end of an optical transmission line that does not face
A signal indicating a so-called operation state,
The transmission light at the input end of the
A stop state signal generating means for generating a corresponding signal;
In response to the signal generated by the stop state signal generation means,
If the operation status is good, display of good operation and operation status
Display the status of the status
Remember the leverage state, and if the operation state is bad,
The operation failure display and the state immediately before the storage
From the operating state to the bypass state
Display the status of operation failure and display the status immediately before
Is in the bypass state,
Indication for status display of transition to the rate status
Means.

In the optical switch device according to the present invention, the stop state signal generating means generates a signal corresponding to the stop position of the optical transmission line switching movable element, so that the operation state of the optical switch device can be identified. .

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram for explaining a configuration and an operation state of an embodiment of an optical switch device according to the present invention. FIG.
1, an optical transmission path 2 composed of an optical fiber is connected to the optical switch 1. The optical transmission line 2 is an optical fiber 2a,
The input end is formed by 2b, and the output end is formed by the optical fibers 2c and 2d. The optical fiber 2 at the input end
b and the optical fiber 2d at the output end are connected to the transmission end 3a and the reception end 3b of a node (not shown) provided corresponding to the optical switch 1. Optical fiber 2a, 2
Although c is spaced apart from each other, they are arranged so as to extend on the same straight line so that the light emitting surface and the light receiving surface face each other. Similarly, the optical fibers 2b and 2d are arranged so as to extend on the same straight line. A rotatable rectangular optical transmission path switching movable element 4 is arranged between the optical fibers 2a and 2b as input terminals and the optical fibers 2c and 2d as output terminals. The optical transmission line switching movable element 4 is formed of a rectangular prism, and is configured to rotate around the center of the rectangle. That is, the direction of the light from the input ends 2a and 2b of the optical transmission path 2 can be switched by the rotation of the optical transmission path switching movable element 4. When the optical transmission line switching movable element 4 is at the dotted line A in FIG. 1, the transmission light from the input ends 2a and 2b is not refracted in the element 4 and the output ends 2c and 2c are not refracted.
A so-called bypass state in which the vehicle goes straight to d. When the element 4 is rotated by 45 ° and is on the dotted line B, the input terminal 2a,
The transmission light from 2b is refracted by 45 ° at the element 4 and enters a so-called operation state in which the transmission direction is switched to the output ends 2d and 2c and proceeds. Optical transmission path switching movable element 4
A first contact 8 is attached to the corner of the element 4, and the first contact 8 moves on this rotation orbit as the element 4 rotates. In addition, the second contact point 9 and the third contact point 1 are located at a predetermined stop position of the element 4 and near the rotation orbit of the element 4.
0 is provided. The second contact 9 is arranged at a position where the second contact 9 is connected to the first contact 8 when the optical transmission line switching movable element 4 is stopped in the state A, that is, the position of the bypass state correctly. The third contact 10 is arranged at a position where the third contact 10 is connected to the first contact 8 when the element 4 stops at the state B, that is, the position in the correct operating state. A connection signal between the first contact 8 and the second and third contacts 9 and 10 is input to the status display signal circuit 5. The state display signal circuit 5 is connected to a drive power line 6 for driving the optical switch and a display power line 7. The status display signal circuit 5 is provided with first to third output lines 11a, 11b, 11c for outputting a signal for displaying the operation state of the optical switch 1. First to third output lines 11a, 11b,
11c outputs a signal for indicating the operation state of the optical switch 1, but from the first output line 11a,
A signal for displaying an operation state is output, a signal for displaying an operation state, that is, a bypass state or an operation state, is output from the second output line 11b, and an operation failure state is output from the third output line 11c. A signal for display is output. That is, the signal for displaying the operating state is output when the power for driving the optical transmission line switching movable element 4 is applied to the driving power supply line 6. The signal in the operating state is the optical transmission path switching movable element 4.
Is output when the first contact 8 and the second contact 9 are in a predetermined connection relationship, and when the element 4 is correctly operated, that is, when the first contact 8 8 is output when the third contact 10 has a predetermined connection relationship. The signal for displaying the operation failure state is a signal for outputting a signal as an operation failure when the optical transmission line switching movable element 4 does not perform a predetermined operation, and the operation failure is changed from the bypass state to the operation state. Alternatively, the operation is performed so as to detect whether the operation has occurred during the process from the operation state to the bypass state. This is to detect a connection failure between the first contact 8 and the second and third contacts 9 and 10 in relation to the previous state. The first to third output lines 11a, 11b, 1 of the status display signal circuit 5
The signal from 1c is input to the display unit 12 shown in FIG. The display unit 12 is configured to display the current operation state of the optical switch 1. The power supply connector 13 and the input terminals 2a and 2b of the optical transmission line are connected to the display unit 12.
The first optical connector 14 and the output ends 2c and 2d of the optical transmission line
Are provided. The display lamp group 16 includes first to sixth display lamps 16.
a to 16f. That is, the first display lamp 16a is connected to the first output line 1 of the status display circuit 5 described above.
The light is turned on by a signal from 1a, and a so-called operation state is displayed. The second and third display lamps 1
6b and 16c are turned on by a signal from the second output line 11b , the second display lamp 16b is turned on when the optical transmission path switching movable element 4 is in the bypass state, and the third display lamp 16c is in the operating state. When lit. Fourth indicator lamp 16d to sixth indicator lamp 16f
Are used for indicating the state of malfunction, and are controlled by a signal from the third output line 11c . The fourth display lamp 16d is turned on upon a so-called malfunction, and the fifth display lamp 16d is turned on.
The display lamp 16e is turned on when the operation of shifting from the bypass state to the operation state is defective, and the sixth display lamp 16f is turned on.
Is turned on when the operation from the operating state to the bypass state is defective. Such a display unit 12 can be incorporated in the optical switch 1, and
It is also possible to provide separately. 3 and 4
Is a diagram showing another embodiment of the present invention. The same parts as those in FIGS. 1 and 2 are described with the same reference numerals, and the details of the same reference numerals are omitted. That is, in the embodiment of FIG. 1, a signal corresponding to the contact state of the fixed contact and the movable contact is used to detect the stop state of the optical transmission path switching movable element 4 corresponding to the operation state of the optical switch 1.
In the other embodiment of the present invention shown in FIGS. 3 and 4, the operation state is detected by a method different from the above-described state detection by the contact. That is, in FIG. 3, in a state where a potential is applied to the driving power supply line 6, the first display lamp 16a in FIG. 2 is turned on to indicate an operating state. In FIG. 3, there is no transmission signal from the transmission end 3a to the reception end 3b, that is, there is no transmission light at the input end 2b and the output end 2d, and transmission light exists only at the input end 2a and the output end 2c. Sometimes, this state is recognized as a correct bypass state, and the second display lamp 16b in FIG. 2 is turned on. In this case, the presence or absence of the transmission light at the output ends 2c and 2d is determined by the first and second optical branching units 17 provided in the respective optical fibers.
The first and second monitor sections 18 split the split light from
a, 18b. First and second monitor units 18
Signals from a and 18b are input to the status display unit 5 and are used to turn on the corresponding display lamps of the display unit 12 described above. In the operating state, as shown in FIG. 4, transmission light is present at the input end 2a, light from the transmission end 3a is also present at the input end 2b, and transmission light from the input end 2a is refracted and output at the output end 2d. is transmitted to the receiving terminal 3b via the light transmitted through the input terminal 2b of the transmitting end 3a is transmitted to the refracted output end 2c. As a result, the first and second
Branch light is extracted from each of the light branching units 17a and 17b and input to the status display unit 5 via the first and second monitor units 18a and 18b, and the corresponding display lamp of the display unit 12 is turned on. . When an operation failure occurs, the state immediately before the failure occurrence state is stored, the state from which the failure occurred is detected, and the corresponding display lamp of the display unit 12 is turned on via the state display circuit as described above. I do. In the above embodiment, the description has been made using the rotating prism type optical switch as the optical transmission switching element, but any general mechanical optical switch can be applied. Further, in the above embodiment, the display lamp group for displaying the status is provided on the optical switch main body, but it can be applied to an external monitor by having an output terminal.

According to the present invention, the operation state of the optical switch can be accurately confirmed with a simple configuration, and the failure can be promptly transmitted by displaying the failure. In addition, by displaying the defective state, it is possible to grasp the defective portion. As a result, even when a defect occurs, the time required to repair the defective portion can be reduced. Further, since the display can be checked, it is not necessary to disconnect the optical connector, and unnecessary contamination from the outside can be prevented.
It is now possible to confirm safely and easily. Further, a measuring instrument for checking the state is not required.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration and an operation state of an embodiment of the present invention.

FIG. 2 is a diagram showing a display state according to an embodiment of the present invention.

FIG. 3 is a diagram showing a configuration and an operation state of another embodiment of the present invention.

FIG. 4 is a diagram showing a configuration of another embodiment of the present invention and another operation state.

FIG. 5 is a diagram illustrating a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Optical switch 2 ... Optical transmission line 2a, 2b ... Input end 2c, 2d ... Output end 3a ... Transmission end 3b ... Receiving end 4 ... Optical transmission path switching movable Element 5 State display circuit 6 Drive power supply line 7 Display power supply line 8, 9, 10 First to third contacts 11a, 11b, 11c First to first 3 output lines 12 display unit 13 power connector 14 first connector pair 15 second connector pair 16 display lamp groups 16a to 16f first to sixth display Lamps 17a, 17b: first and second light branching units 18a, 18b: first and second monitoring units

Claims (3)

(57) [Claims] 1. A rotatable optical transmission line is provided between an input end and an output end of an optical transmission line.
An optical transmission path switching movable element that is a prism
At a plurality of stop positions of the optical transmission line switching movable element.
Correspondingly, the transmission light is transmitted from the input end to the output end of the optical transmission line.
Optical switch device configured to switch optical transmission paths
, A movable contact provided on the optical transmission path switching movable element
And fixed contacts provided for each stop position.
For the connection of the movable contact and fixed contact at the stop position
A stop state signal generating means for generating a stop state signal, and a response to the signal generated by the stop state signal generating means.
If the operation status is good,
Display the status of the
Also remember this state, and if the operation state is defective,
In this case, display the operation failure and immediately before it becomes the stored failure.
Display means for displaying the status of
Optical switch device. 2. An optical transmission system comprising at least a pair of optical fibers.
A rotatable prism body having a rectangular cross section is inserted between the feed paths,
The rotatable prism body transmits the light from one of the optical fibers.
It transmits light to the other optical fiber extending oppositely.
A first stop position for a loose bypass state, and the rotatable
By rotating the prism body by 45 °, the optical fiber
Refracts the transmitted light from one of the
So-called "operate" state for transmission to optical fiber
Optical switch configured to be set to a second stop position
In the apparatus, a first contact provided at a corner of the rotatable prism body
And near the rotation orbit of the rotatable prism body, wherein the
Provided at positions corresponding to the first and second stop positions, respectively.
A pair of second contacts, and connecting the first contact to each of the second contacts.
A stop state signal generating means for the rotatable prism body, and a signal generated by the stop state signal generating means.
If the operation status is good,
Display the status of the
Also remember this state, and if the operation state is defective,
In the case, the display of the malfunction and the state immediately before the storage are
If the device is in the operating state,
Displays a status indicating that the operation has failed to move to the pass status,
Is in the bypass state if it is in the bypass state
Status change to operation status
Optical switch device comprising:
Place. 3. A rotatable prism at an input end and an output end of an optical transmission line.
An optical transmission path switching movable element, which is a
Optical transmission path switching
The transmission light from the input end to the output end of the optical transmission line.
Optical switch device configured to switch the transmission path
Te, varying in response to the stop position of the optical transmission path switching movable element
A signal corresponding to at least the transmission light at the output end,
Optical transmission extending oppositely from transmission light from the input end of the optical transmission line.
A signal indicating the so-called bypass state transmitted to the output end of the transmission line
And the transmission light from the input end of the optical transmission line
Optical transmission line that is switched by the exchangeable movable element and does not face
Signal indicating the so-called operation state transmitted to the output terminal of the
When the set of the transmitted light at the output end of the transmission light input end of said optical transmission line
Stop state signal generating means for generating a signal corresponding to the adjustment
If, respond to signals generated by said stop state signal generating means
If the operation status is good,
Display the status of the
Also remember this state, and if the operation state is defective,
In the case, the display of the malfunction and the state immediately before the storage are
If the device is in the operating state,
Displays a status indicating that the operation has failed to move to the pass status,
Is in the bypass state if it is in the bypass state
Status change to operation status
Optical switch device comprising:
Place.