JPS6348132A - Interruption detecting driving apparatus - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a power outage detection drive circuit, and in particular, in an optical network for computers, etc., connection switching is performed so that the entire optical network does not stop functioning even if each terminal has a power outage. The present invention relates to a power outage detection drive device that can reliably perform the following.

2. Related Art As shown in FIG. 15, there is an optical network 4 in which a host computer 1 and a plurality of terminals 2-1 to 2-4 are connected by a loop-shaped optical cable 3.

Each of the terminals 2-1 to 2-4 has branch connection devices 5-1 to 5-2, respectively.
It is connected to the optical cable 3 via 5-4. Information from the host computer 1 is converted into an optical signal and sent to the optical cable 3.
It is transmitted as shown by the arrow inside, and is transmitted to terminals 2-1 to 2-4.
taken from.

As shown in FIG. 16, the branch connection device 5-1 has an optical-to-electrical converter 6 and an electric-to-optical converter 7, both of which are connected to an electric wire 8.
It is connected with. This branch connection device 5-1 includes a converter 6
Among the optical fibers in the optical cable 3, the optical fiber connected to the output side of the host-width coater 1, that is, the end of the upstream optical fiber 9 on the upstream side in the flow direction of the optical signal, from which the optical signal is output. 9a, another converter 7 is connected to the end 10a of the downstream optical fiber 10, into which the optical signal is sent.
The optical fiber cable 3 is inserted and connected in the middle of the optical cable 3.

The terminal device 2-1 is electrically connected to the middle of the electric wire 8.
(be.

The optical signal flowing through the optical fiber 9 is converted into an electrical signal by the converter 6, passes through the electric wire 8 and the terminal 2-1, is converted into an optical signal again by the converter 7, and is sent into the optical fiber 10. . That is, the optical fibers 9.10 are connected via photoelectric conversion means. The optical signal is supplied to the terminal device 2-1 in the form of an electrical signal, and is extracted therefrom as necessary.

Problems to be Solved by the Invention However, branch connection devices 1 to 5 configured as described above
4, if any one of the branch connection devices 5-1 to 5-4 is affected by a power outage, the optical-to-electrical conversion operation and the electric-to-optical conversion operation stop, and the flow of optical signals is diverted to the branch connection device. There was a problem in that the entire optical network 1 to 4 would stop functioning.

Therefore, in the case of a power outage, the present invention C is designed to prevent the entire optical network 4 from stopping its functions, even though it is unavoidable that the terminals at the location where the power is cut off become unusable.
By installing a power failure detection drive device that connects the optical fibers 9 and 10 through an optical connection means instead of a photoelectric conversion means in the event of a power outage, it is possible to solve the problems mentioned above. What is the purpose?

Means for Solving the Problems - 1 - In order to solve the problems mentioned above, the power failure detection drive device of the present invention has a pair of optical-electrical motors connected between the two terminals, etc. Transducers and electro-optical converters.

and an optical connection means are fixed thereon, the opto-to-electrical converter facing the end of one optical fiber and the electrical-to-optical converter facing the end of another optical fiber in a first position. , a support moving means for moving the optical connecting means between one end of the optical fiber and a second position facing the end of another optical fiber; and a support moving means for moving the optical connecting means between one end of the optical fiber and a second position facing the end of another optical fiber; A power outage detection circuit for detecting a power outage of a terminal device, etc. is connected to a support moving means, and only when the support is in the first position, the support is moved in response to a power outage detected by the power outage detection circuit. to move it to the second position
The device is constructed of an energization permitting circuit that permits the conduction of the discharge current of the sensor to the support moving means.

Embodiment The present invention has been made in view of the above, and one embodiment thereof will be described below with reference to the drawings.

First, an optical fiber connection switching device to which a power failure detection drive device according to the present invention is applied will be described.

Figures 1 and 2 show a fiber optic connection switching device 20.
The schematic configuration is shown below. Figure 1 shows the state in the operating mode in which the terminal is connected to the optical network, and Figure 2 shows the state in which the terminal is disconnected from the optical network and the optical fiber is connected by an optical connection means. through mode (e.g. mode state during power outage or terminal 2-1)
indicates a disconnected state). Also, in each figure, the same reference numerals (No. 4) are used for parts corresponding to the constituent parts shown in Fig. 16.

The transducers 6, 7 form a pair and are fixed to the support 22 together with the face plate 1-21. The support body 22 is moved in the direction indicated by the arrow X+ by the support body moving means 23.

x Moved in two directions.

In the operation mode, as shown in FIG.
is set to 1 and positioned at the first position m P + . The optical-to-electrical converter 6 faces the end 9a with its optical axis 6a aligned with the optical axis 9[) of the upstream optical fiber 9, and the electrical-to-optical converter 7 has its optical axis 7a aligned with the optical axis 9[) of the downstream optical fiber. The end 10a is aligned with the optical axis 10b of the lens 10 and faces the end 10a.

When a power outage occurs, the support moving means 23 is activated by the power outage detection drive device 28, and the support 22 is moved in the two directions of the arrow. The support body 22 has a spring 2 as shown in FIG.
Due to G, A-1 force is pushed in the direction of arrow ×2, and S1 Hetsupa 27
is locked and positioned at the second position +RP2. A face plate 21 enters into the optical fiber 9,100 instead of the above-mentioned converter 6.7, and its optical axis 21a is the optical axis 9b.

10b, and both ends thereof are respectively ends 9a.

10a.

FIGS. 3 to 5 show an optical fiber connection switching device w30 that embodies the configuration shown in FIGS. 1 and 2. FIG. FIG. 6 schematically shows the main parts of this device.

The device 30 has a small case 59 (45x 75x15
), the main body 52. Support 31. It has a unitized configuration in which a motor 53, an electrolytic capacitor 72, etc. are incorporated. Note that this electrolytic capacitor 72 may be arranged outside the case 59.

The support body 31 has arms 32 and 33 degrees extending left and right, and a rack 34 extending rearward (in the upper part of the figure), forming a substantially cross shape in a plan view.

A substrate 36 on which a photodiode 35 is mounted is fixed to the left side of the support 31, and a substrate 38 on which a light emitting diode 37 is mounted is fixed on the right side. The substrates 36 and 38 are fitted and positioned within the recesses 39 and 40 of the support body 31, respectively, and the substrates 36 and 38 are mounted with good workability and positioned with high accuracy, and the photodiode 35 and the light emitting diode 37 are aligned. It is precisely placed in the desired position. This pair of photodiode 35 and light emitting diode 37 constitutes a photoelectric connection means. 41 is a ground terminal, 42 is an output terminal, 43 is a power supply terminal, and 44, 4, and 5 are input terminals, respectively.

Further, a seven-eighth plate 45 as an optical connection means shown in FIG. 7 is fitted and fixed in a through hole 46 on the support body 31. As shown in FIG. The face plate 45 has a structure in which a large number of optical fibers 47 are bundled into a cylindrical shape.

In this support body 31, the hole 48 of the arm 32 fits into the rod 49, the groove 50 of the arm 33 fits into the rod 51, and the main body 52
It is supported so as to be slidable in the directions of arrows X+ and X2.

The rods 49,51 extend parallel to the body 52, as shown in FIGS. 3-5. A Teflon (trade name) coating is formed on the surface of the rod 4-9.51 so that the support 31 can be easily moved. Further, as shown in FIGS. 3 and 4, the rack 34 meshes with the pinion 54 of the motor 53.

As shown in FIGS. 3 to 5, the end 9a of the upstream optical fiber 9 is fixed to the left side surface of the main body 52. As shown in FIGS. Main body 5
The end 10a of the downstream optical fiber 10 is fixed to the right side of the optical fiber 2.

Optical fibers 9 and 10 extend outside the case 59, and are provided with connectors 89a and 89b at their respective ends. As shown in FIGS. 1, 2, and 3, the device 30 is inserted and connected to the optical cable 3 midway through connectors 89a and 89b.

Furthermore, an optical fiber (turnback) for checking failure of the photodiode 35 and the light emitting diode 37 is provided.
One end 55a of 55 is fixed to the left side of the main body 52, and the other end 55b is fixed to the right side of the main body 52.

In the operating mode state shown in FIG. 3, the spring force of the spring 71 applies a counterclockwise rotational force to the arm 65 and a clockwise rotational force to the arm 67, and the support body 31 is rotated by the arrow X1.
spring biased in the direction.

As a result, the optical signal from the upstream optical fiber 9 is normally received by the photodiode 35, and the light-emitting diode 3
The optical signal from 6 is normally sent into the downstream optical fiber 10.

When a power outage occurs at the location of the terminal device 2-1, the electrolytic capacitor 72 is discharged as will be described later, and this discharge current temporarily rotates the motor 53, and the support body 31 is moved in the direction of arrow X2, as shown in FIG. The state is switched to the state shown in FIG. 1, in which the optical axis 45a exactly coincides with the optical axes 9b and 10b, and the optical axis 56 is the optical axis 55c.

55d exactly.

Therefore, the optical signal from the optical fiber 9 is transmitted through the inside of the face plate 45 and sent out into the optical fiber 10, and in the event of a power outage, the optical signal passes through the branch connection device 5-1, as shown in FIG. The light flows through the optical cable 3 and the optical network 4 continues to operate normally.

Furthermore, since the optical axis 56 coincides with the optical axes 55c and 55d, the optical signal from the light emitting diode 36 is transmitted through the optical fiber 55.
The photodiode 35 normally receives the photodiode 35, and the presence or absence of a failure in the photodiode 35 and the light emitting diode 36 can be checked without error.

In addition, in FIG. 3 and FIG. 4, 75 is a terminal board;
6 is the power terminal (switching), 77 is the grounding terminal (switching), 78
79 is an input terminal (switching) and a power supply terminal (transmission). 8
0 is another terminal board.

81 is a data output terminal, 82 is a ground terminal (transmission/reception), 83
84 is a power supply terminal (transmission/reception) and a data input terminal. The terminal 2-+ has its input terminal as the data output terminal 8.
1 and its output terminal is connected to the data input terminal 84.

Further, in FIG. 6, 85 is an amplifier, and 86 is a light emitting diode driving IC.

Further, when the switching operation is performed after the power outage is restored, the motor 53 rotates and the device 30 is switched to the operating mode shown in FIG. 3.

Next, a power failure detection drive device (hereinafter simply referred to as a drive device), which is a main part of the present invention, will be explained with reference to FIG.

The drive device 90 is generally equipped with a power outage detection circuit 91 that detects a power outage and a power outage detection drive circuit 91 that drives the motor 53 in the event of a power outage, and an operation drive circuit that drives the motor 53 by switching connections. 92.

First, the operation when a power failure occurs while the device 30 is in the operating mode shown in FIGS. 3 and 6 will be described.

During power supply, power supply Vcc (+5V) is applied to the power supply terminal 94. As a result, the electrolytic capacitor C+ (72) with a capacitance fi (0.1 μm) has a diode D+ and a resistor R1.
It is in a charged state through.

Also, the transistor Trs is in an off state, and the seventh transistor 5
1-transistor Tr3.3 connected to both ends of transistor Tr3. T
r4 is also in an off state.

When a power outage occurs, the power supply voltage Vcc becomes zero, the base voltage of the transistor rrs serving as the power outage detection means becomes zero, and the electrolytic capacitor C+ (72) is discharged. The discharge current is applied to the emitter of the 1-transistor Trs, and the transistor Trs is turned on.

Accordingly, the 1-transistor transistors Tra and Tr3 are turned on. Thereby, the above-mentioned discharge current flows through the transistor Trs on the one hand and the transistor Trs on the other hand.
It flows through r4-motor 53-transistor Tr3, and flows inside the motor 53 in the direction shown by arrow 2. As a result, the motor 53 is temporarily driven and reversed, the pinion 54 rotates in the direction of arrow J2 in FIG. Become.

In the normal operating mode, the input terminal 95 is set at 1 level. Therefore, in the operating mode in which the input terminal 95 is maintained at the same level, the device 30 enters the through mode only when the power supply terminal 94 becomes zero, in other words, only during a power outage. Further, the diode D+ restricts the discharge current from flowing toward the power supply terminal 94 side.

Next, the operation drive circuit 92 will be explained.

In the through mode when current is applied, C2 is charged by the current from terminal 94.
(See FIG. 10(A)). A 1-level signal (Fig. 10 (B)) is input to the input terminal 95, and a 1-level signal (Fig. 10 (C)), which is approximately the same level as Vcc, is input from the No. 8 terminal of the IC 96. is being output. This causes transistor lr1. Both Tr2 are in the on state (
(See Figures 10(D) and (F)), ,transistor king r1
is in the on state, the L level signal (Fig. 10 ([)) is input to the No. 4 terminal of the IC96, and the L level signal ([)] which is approximately the same level as Vcc is input from the No. 5 terminal.
FIG. 10(G)) is output.

As a result, the potentials at point 97 on one end of the motor 53 and point 98 on the other end of the motor 53 are both 1 lb and at the same level.
Motor 53 is not energized. In this way, the motor 53
is stopped in a state in which no electricity is applied, that is, a state in which no rotational force is applied, and the support body 31 is biased and positioned by the - spring 71 as described above. In addition, the above IC96 is manufactured by Fujitsu and has model number 'J M B 3763.
It is an IC of J.

When the operation is performed at time t1 to switch the through mode to the operating mode, the potential of the input terminal 95 becomes H level (Fig. 10 (B)), and the potential of the No. 8 terminal of the IC 96 becomes L level (earth level) (Fig. 10 (B)). Figure 10 (C)). As a result, the charge in the capacitor C2 is discharged with a time constant determined by the capacitor C2 and the resistor R2 (FIG. 10(A)). When the terminal voltage of capacitor C2 decreases to 1 at time t2, the base potential of transistor Tr2 becomes below the threshold level and transistor Tr2 is turned off (Fig. 10 (D)), and accordingly transistor Tr+ is also turned off. (Figure 10(E)). When the transistor Tr+ is turned off, the potential of the No. 4 terminal of the IC96 becomes H level (the first
Figure 0 (F)).

The potential of the No. 5 terminal becomes L level (earth level) (Fig. 10 (G)).

Time T+ (0,2Se
c), the potential at point 98 is H level (Vcc)
, the potential at point 97 becomes L level (earth level), and current flows through motor 53 in the direction of arrow 11 for time T1, as shown in FIG. 10(H). As a result, motor 5
3 is temporarily driven to rotate normally, the pinion 54 rotates in the direction of arrow J1 in FIG. 5, the support body 31 moves in the direction of arrow
The operation mode is as shown in FIG.

Further, when the operation mode is switched to the through mode at time t3, the potential of the input terminal 95 becomes L level (FIG. 10 (B)), and the potential of the No. 8 terminal of the IC 96 becomes V
The H level is approximately the same as cc (Figure 10 (C)).
), capacitor C2 begins to be charged via resistor R2 (FIG. 10(A)). When the terminal voltage of capacitor C2 rises to Vl at time t4, the base potential of transistor Tr+ reaches the threshold level, transistor Tr2 turns on (FIG. 10(D)), and transistor Tr+ also turns on accordingly. (Figure 10(E)). When the transistor Tr+ turns on, the potential of the No. 4 terminal of IC96 becomes L.
level (earth level) (Figure 10 (F)), 5
The potential of the No. terminal becomes H level (FIG. 10(G)), which is approximately the same level as Vcc.

As a result, the time T2 (0
, 2sec), point 98 is L level (earth level)
, point 97 becomes H level, which is almost the same as Vcc, and the motor 5
As shown in FIG. 10 (H), a current flows in the two directions of the arrow (2) during the time T1. As a result, the motor 53 is temporarily driven and reversed, and the device 30 enters the through mode as in the case of the power outage described above.

Incidentally, the IC 96 constituting a part of the drive device 90 described above is mounted on the left side of the printed circuit board 87 built in the case 59 in FIG. Similarly, the printed circuit board 8 built in the case 59
A thick film IC 88 in which the amplifier 859, light emitting diode driving IC 86, etc. described above is incorporated is located on the right side of 7.
is mounted.

Next, another embodiment of an optical fiber connection switching device to which the power failure detection drive device of the present invention can be applied will be described with reference to FIG. 11 and subsequent figures.

The optical fiber connection switching device 100 according to this embodiment is a mechanism that uses a solenoid instead of the above-mentioned motor as a means for moving the support.

FIGS. 11 to 13 show the operating mode states. In each figure, the same reference numerals are given to the parts that substantially correspond to the constituent parts shown in FIG. 3, and the explanation thereof will be omitted.

Reference numerals 101 and 102 indicate solenoid coils, which are fixed to face each other on a substantially T-shaped main body 103. 104 is a solenoid coil 101. This plunger is common to 102. A rod 105 is fixed to the center of the plunger 104. Coil springs 106°107 are attached to the rod 105.
are provided with a slider 108 sandwiched between them.

Reference numeral 109 denotes a rotating arm, which is pivotally supported approximately at the center by a shaft 110, and a long hole in one arm is connected to pin 1 on the slider 108.
11, and the elongated hole of the other arm fits into the pin 113 of the support body 112.

The support body 112 has an M extending left and right at one end in the longitudinal direction.
114 and 115, and arms 116 and 117 extending to the right at the other end. The support 112 includes substrates 36, 38
and face plate 45 are attached.

The main body 103 has a rod 118 coated with Teflon (trade name). 119 is horizontally mounted in parallel.

The support body 112 described above has arms 114 . 116 holes 120
．． 121 fits into the rod 118, and the arm 115. 117
The grooves 122 and 123 fit into the rod 119, and the arrow
+, is supported slidably in the X2 direction.

By moving the plunger 104 in the directions of arrows Y+ and Y2, the support body 112 is moved via the rotating arm 109 to
, move in the X2 direction. Solenoids 101 and 102 are
It is designed to provide plunger 104 with a stroke sufficient to move support 112 by a further stroke than is permitted thereto. To give a specific example, if the stroke of the support 112 is set to 3 m and the stroke of the plunger 104 is set to 4 m, the difference 1- between the two strokes is determined by the coil spring 106. 107 exerts an elastic force.

Note that the solenoid coil 101. 102 are connected in series with their winding directions being opposite to each other as shown in FIG.
．． It is inserted and connected between 98 and 98.

This causes the solenoid coil 101 to connect to the plunger 10.
4, the solenoid coil 102 acts to push out the plunger 104, and the solenoid coil 1
01 pushes out plunger 104, solenoid coil 102 retracts plunger 104.

In addition, each solenoid coil 101. A permanent magnet (not shown) is provided in conjunction with 102 to lock the plunger 104 in the moved position.

In the operating mode, as shown in FIG. 11, the plunger 104 moves in the direction of arrow Y1 and is locked. The coil spring 107 is compressed compared to the coil spring 106, and the support body 112 is biased in the direction of arrow X + force by the spring force of the coil spring 107 via the arm 109, and is screwed to the main body 103. It is locked by the rod holder 124 and positioned at the first position Q1.

When a power outage occurs, the electrolytic capacitor 72 (
C+) discharge current flows through the solenoid coils 101 and 102.
flows in the direction of arrow I2, and solenoid coil 101. 1
02 is excited, the plunger 104 moves in the direction of arrow Y2 and is magnetically locked. As the plunger 104 moves, the support body 112 moves through the arm 109 as indicated by the arrow X2.
move in the direction. At the final stage of the movement of the plunger 104, the coil spring 106 is compressed, and the spring force of the coil spring 106 forces the support 112 in the direction of arrow is positioned.

Also, if an operation is performed to switch the mode to the through mode during the operation mode, the solenoid coil 101. Current temporarily flows in the two directions of the arrow 102, and the device 100 switches to the through mode. If the operation of switching the mode to the operating mode during the through mode is 1-, the solenoid coil 101. 1
02, a current temporarily flows in the direction of arrow 11, and the device 100
switches to the operating mode shown in FIG.

Effects of the Invention As described above, according to the power failure detection drive device of the present invention,
When a power outage occurs, the load can be temporarily driven by discharging the capacitor that is being charged while the current is being applied, and the above drive is performed when the optical fiber switching device is in operation mode. Moreover, since it starts only when a power outage occurs in the operating mode, there is no malfunction, and the reliability of the power outage detection drive device can be improved.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIGS. 1 and 2 are block diagrams showing the operation mode and through mode state of an optical fiber connection switching device to which the power failure detection drive circuit of the present invention can be applied, respectively; FIG. 3; Figures 4 and 5 are a plan view, a front view, a side view, and a side view of an embodiment of an optical fiber connection switching device embodying the configuration of Figures 1 and 2, with the case cut away. Fig. 6 is a diagram schematically showing the connection state between the support portion in Fig. 3 and the terminal, Fig. 7 is a perspective view of the face plate, and Fig. 8 is a photodiode after switching. FIG. 9 is an enlarged view showing the alignment state of the light emitting diode and the optical fiber and the alignment state of the face plate and the optical fiber. FIG. A) to (H) are diagrams each explaining the operation of the operation drive circuit in FIG. 12, and FIGS. 11, 12, and 13 are diagrams showing optical fiber connection switching to which the power failure detection drive circuit of the present invention can be applied, respectively. 14 is a diagram showing the connection state of a pair of solenoid coils; FIG. 15 is a configuration diagram of an optical network; This figure is a block diagram of the terminal branching and connecting device in FIG. 15. 4... Optical network, 20.30,100... Optical fiber connection switching device, 53... Motor, 72 (C
1)... Electrolytic capacitor, 91... Power failure detection drive circuit, 94... Power supply terminal, Dl... Diode, R1
...Resistance, Tr3. Tr4. Tr5...transistor. Patent applicant Hitachi, Ltd. Mitsumi Electric Co., Ltd.

Claims (1)

[Claims] A support body to which a pair of optical-to-electrical converters and an electric-to-optical converter, to which a terminal device etc. is connected between them, and an optical connection means are fixed, and the optical-to-electrical converter is one optical a first position opposite an end of a fiber, the electrical-to-optical converter facing an end of another optical fiber; and a second position opposite an end of the one and another optical fiber. a support moving means for moving the terminal to and from the terminal; a capacitor that is charged when the terminal, etc. is normally energized and discharged when there is a power outage; a power failure detection circuit for detecting a power outage of the terminal, etc., and the support. A discharge current of the capacitor is connected to body moving means, and the discharge current of the capacitor is configured to move the support body to the second position in response to the power failure detection of the power failure detection circuit only when the support body is in the first position. A power outage detection drive device comprising: an energization permitting circuit that permits energization to the support moving means;