WO2006095421A1

WO2006095421A1 - Power source monitor/control method and device

Info

Publication number: WO2006095421A1
Application number: PCT/JP2005/004121
Authority: WO
Inventors: Kazukiyo Ogawa; Yuichi Hashimoto; Shinji Kamioka
Original assignee: Fujitsu Limited
Priority date: 2005-03-09
Filing date: 2005-03-09
Publication date: 2006-09-14

Abstract

Any main signal unit is returned, even in case an instantaneous OFF of a power source occurs in the main signal unit, from an abnormal state to a normal state so that the entire device may rise. For this purpose, an on-board power source failure is detected on a reception side one of a plurality of optical main signal units having different on-board power sources and connected continuously. When the on-board power source failure is detected, the optical output of another optical main signal unit on the transmission side is stopped.

Description

Specification

Power supply monitoring and control method and equipment

Technical field

The present invention relates to a power supply monitoring / control method and apparatus, and more particularly to a method and apparatus for monitoring and controlling a plurality of on-board power supplies used in a WDM (wavelength division multiplexing) transmission apparatus or the like.

Background art

[0002] Current communication platforms include PDH (digital leased line) and SONET / SDH power IP system Z

Various needs such as WDM systems are required, and different systems are combined in the same system. For this reason, units (packages) having various functions are mixed, and each unit has a separate power source.

[0003] As such an example, a WDM transmission apparatus will be described below.

[0004] A WDM transmission apparatus is a transmission apparatus that accommodates various types of lines (optical line termination), performs optical wavelength conversion, and performs optical wavelength multiplexing (WDM). As schematically shown in FIG. 7, the WDM transmission apparatus 1 monitors and controls the main signal unit 2 as a lower interface, the main signal unit 3 as an upper interface, and these signal units 2 and 3. Unit 4 and a clock unit 5 that supplies a clock to each of these units 2-4, and these units 2-5 are connected via a switch 'fuse unit 6. Connected to the station power supply 7.

[0005] Each of these units has the following main functions.

• Main signal (lower interface) unit 2:

This unit has a transbonder function, and has a function of accommodating and converting the wavelength of an optical Ethernet (registered trademark) system and SONET / SDH optical interface line. Send and receive.

• Main signal (upper interface) unit 3:

This unit distributes optical signals with optical power bra, optically routes with optical switches, optical wavelength demultiplexing (MUX / DEMUX) and optical level amplification of optical multiplexed signals with optical amplifiers It has a transmission / reception function and transmits / receives an optical signal M2 to / from the main signal unit 2 and transmits / receives an optical signal M3 to / from an external (higher level) device.

• Monitoring 'control unit 4:

This unit has a unit monitoring function, a main signal alarm function, and a control interface function in the WDM transmission apparatus 1.

• Clock unit 5:

This unit has a clock interface function within the transmission equipment and a monitoring / control signal interface function between WDM transmission systems.

[0006] As shown in Fig. 8, this WDM transmission apparatus 1 is supplied with DC-48V power from the station power supply 7 via the switch fuse 6, and further, WDM transmission. It is supplied to the on-board power supply (hereinafter sometimes referred to as OBP) required for each power supply type installed in each unit 2-5 in the device 1. That is, for example, in the case of main signal unit 2 and 3, + 5.0V, -5.2V, "-+ 3.3V and so on! In the case of the control unit 4 and clock unit 5, various on-board power supplies such as + 3.3V, + 2.5V and + 1.5V are provided, and DC—48V is provided for each of these on-board power supplies. Power is being supplied.

[0007] In such a WDM transmission apparatus 1, the voltage (DC-48V) 1S applied from the power supply 7 to each unit 2-5 via the switch 'fuse part 6 as shown in Fig. 9 (1). In some hundreds of seconds / z sec—several msec, the voltage falls from DC—48V to 0V and then rises from 0V to DC—48V.

[0008] When a power supply interruption as shown in FIG. 1 (1) occurs, for example, in the on-board power supply of the main signal unit 3, the monitoring-control unit 4 and the clock unit 5, the same figure (2) As shown in Fig. 3, an instantaneous interruption (secondary output interruption) occurs in response to such an instantaneous interruption of power supply (step T31) .After the restart time of this on-board power supply has elapsed, the on-board power supply is turned on again. Start up (step T32).

However, with respect to the main signal unit 2, as shown in FIG. 3 (3), the secondary output of the on-board power supply is not interrupted and normal output is maintained. Cases may occur. 9 (1) 1 (3) corresponds to voltage (1) 1 (3) in FIG. 8, respectively. [0010] In this way, when an abnormal voltage droop (instantaneous drop state) occurs in the station power supply 7 in the normal operation state, the main signal unit (upper interface) unit 3, the monitoring control unit 4 and the clock unit 5 shows the process of secondary side output disconnection → restart of each onboard power supply, but the main signal unit (lower interface) unit 2 maintains the normal state without the secondary side output disconnection of the onboard power supply. Then there was a thing!

[0011] As described above, there may be a unit in which instantaneous interruption occurs in the same transmission apparatus when the station power supply is instantaneously interrupted and a unit in which instantaneous interruption does not occur may be due to the following reasons. It is done.

[0012] Many units have various functions (trans bonder function and amplifier function), and circuit power consumption Z load conditions (such as sudden load changes) Z station power supply oscillation prevention ZEMI filter circuit As a result, there is a large difference in the load capacity Z capacitor capacity between units. Depending on the unit, a difference of 1000 F or more may occur. Therefore, the function of holding the voltage for a certain period of time is also performed, and the on-board power output (secondary power supply) is not cut off as described above.

FIG. 10 shows a conventional configuration example of such a WDM transmission apparatus 1. In this conventional example, the main signal unit (lower interface) unit 2 includes an optical line accommodation unit 21, a termination unit 22, a WDM wavelength conversion unit 23, and a WDM optical transmission / reception unit 24. It has the function of converting the wavelength of your optical signal Ml to optical signal M2 and converting the wavelength of optical signal M3 to optical signal Ml.

The main signal unit (upper interface) unit 3 includes a WDM optical transmission / reception unit 31, an optical component / optical module 32, and a WDM optical amplifier output optical reception unit 33. Performs signal distribution, wavelength routing, optical wavelength demultiplexing, and optical level amplification, and transmits / receives optical signals M2 and M3 to / from main signal unit 2 and transmits optical signals to / from a host device (not shown). Sending and receiving M4.

[0015] As shown in Figs. 7 and 8, these main signal unit 2 and 3 are provided with an on-board power source and its attached portion. That is, in the case of the main signal unit 2, the on-board power supply unit 25, the voltage monitoring unit 26 that monitors the output voltage, and the notification unit that outputs the monitoring result 27 and a monitoring / control unit 28 for controlling the entire WDM optical transmission / reception unit 24 and the main signal unit 3 in the same manner as the on-board power supply unit 34, the voltage monitoring unit 35, and the notification unit 36. The monitoring / control unit 37 is provided.

[0016] Further, the monitoring / control unit 4 performs unit monitoring and signal system alarms in the transmission apparatus 1 as well as control, and notifies the notification units 27 and 36 in the main signal units 2 and 3 A receiving unit 41 that receives a signal, a recognition unit 42 connected to the receiving unit 41, and monitoring in the main signal unit 2 and 3 via the system control bus B1 according to the output of the recognition unit 42 And monitoring / controlling unit 45 for monitoring / controlling the control units 28 and 37.

Further, the clock unit 5 includes an on-board power supply unit 51, a voltage monitoring unit 52 that monitors the voltage, a notification unit 53 that outputs the monitoring result, and a monitoring unit that is also connected to the system control bus. The output signal of the notification unit 53 is supplied to the reception unit 41 in the monitoring / control unit unit 4.

[0018] In such a WDM transmission apparatus 1, the operation in the case where a power interruption as shown in Fig. 9 (2) occurs is the pattern P1 (the optical signal is transmitted from the lower main signal unit 2 to the upper Operation when instantaneous power interruption occurs in unit 3 when flowing in the direction of main signal unit 3, and pattern P2 (optical signal flows from upper main signal unit 3 to lower main signal unit 2 In the case, the operation when a power interruption occurs in Unit 2 is explained below.

Pattern P1:

First, in this WDM transmission apparatus 1, in accordance with the operation example of FIG. 9, assuming that the upper main signal unit 3, the monitoring / control unit 4, and the clock unit 5 are in a power supply interruption state, the main signal unit The on-board power supply 34 in 3 is in an output cut-off state (step T1). The voltage monitoring unit 35 monitoring this sends an abnormality notification to the receiving unit 41 in the monitoring control unit 4 via the notification unit 36 as the monitoring result.

[0019] This is because the voltage monitoring unit 52 that detects the secondary-side output disconnection (step T3) of the on-board power supply unit 51 in the clock unit 5 sends an abnormality notification to the reception unit 41 via the notification unit 53. It is the same.

[0020] Abnormality notifications from these notification units 36 and 53 are also changed to normal notifications as a result of transition from instantaneous power interruption to restart shown in (2) of the figure (steps T9, T20). Especially Become. This is because the on-board power supply 34 has been restarted (step T32).

[0021] In this way, when the on-board power supply 34 of the main signal unit 3 is restarted after an instantaneous power interruption, the monitoring / control unit 37 in the main signal unit 3 becomes an optical component / optical module. 32 (Optical amplifier, optical switch, optical demultiplexing module, etc.) will be started up. This is the power that the optical component'modules 32 do not issue a normal notification from the notification unit 36 as the unit 3 if the startup is not completed normally.

[0022] Then, when starting up the optical component / optical module 32, a warm-up process is executed to enter a ready state (step T33). In other words, this warm-up period is a preparation period from the restart of the onboard power supply 34 until the optical components / optical modules 32 are stabilized.

On the other hand, as shown in the operation example of FIG. 9 (3), the on-board power supply unit 25 in the main signal unit (lower interface) unit 2 has a secondary output that remains normal (step Τ2). Accordingly, a normal notification is given from the voltage monitoring unit 26 to the receiving unit 41 of the monitoring / control unit unit 4 via the notification unit 27, while the notification units 36 and 53 are given And the power to which the abnormality notification is sent has returned to the normal notification after the restart, so that the normal notification is given to the receiving unit 41 in any of the notification units 36, 53, and 27.

Accordingly, the recognizing unit 42 monitors / controls to execute the monitoring / control unit operation (step S3) and the normal device operation (step S4) upon receiving the normality notification from each of the units 2, 3, and 5. Direct to Part 45.

Therefore, the WDM optical transceiver 24 of the main signal unit 2 of the lower interface is not shut down (step Τ35), and the optical output is continued from the WDM optical transceiver 24 (step T31). The WDM optical transmission / reception unit 31 of the signal unit 3 detects the optical signal Μ2 from the WDM optical transmission / reception unit 24 (step Τ32).

[0026] At this time, the optical components' modules 32 mounted on the main signal unit 3 are still warming up (step Τ33), and the optical signal Μ2 is transmitted to the optical transmitter / receiver during such unstable operation. Therefore, the performance (function) of the optical component / optical module 32 cannot be achieved. In the worst case, the optical component module 32 is destroyed or the optical amplifier module If the output light is emitted, there is a risk of adversely affecting the outside. [0027] For this reason, the optical component 'optical modules 32 are configured to start and stop when detecting an optical input level that exceeds a certain threshold during warm-up. For this reason, the main signal unit 3 As the optical component 'optical module 32 is activated and stopped, a notification of abnormality is given from the notification unit 36 to the reception unit 41 of the monitoring control unit 4. Based on this abnormality notification, the recognition unit 42 and the monitoring / control unit 45 do not start up the monitoring / control units 28 and 37, and therefore the WDM transmission apparatus 1 itself does not start up.

Pattern P2:

In this case, this is the operation when the optical signal M3 from the main signal unit 3 is given to the main signal unit 2 this time. This is exactly the reverse of the above pattern P1, and when the on-board power supply units 25 and 51 of the main signal unit 2 and the clock unit 5 are disconnected (steps Til, T13), the main signal unit The output of the on-board power supply unit 34 of unit 3 is normal (step T12), and therefore the optical output remains from the WDM optical transmission / reception unit 31 of the main signal unit 3 (step Τ34).

[0028] Therefore, in the main signal unit 2 to which this optical signal Μ3 is input, the WDM optical transceiver 31 is not shut down (step Τ36), so that the optical input level during warm-up becomes a certain threshold or more. In this state, the receiver 41 of the monitoring / control unit unit 4 is in a state of waiting for a normal notification, so that the WDM transmission apparatus 1 is still in the state of being an optical component 'optical module (not shown). It will not stand up.

[0029] On the other hand, in order to solve the problem that the packages start up randomly when the power is turned on and the system cannot start up normally, the monitoring and control unit checks whether each package has started up. There is a power supply control circuit that starts up normally (see, for example, Patent Document 1).

Patent Document 1: Japanese Patent Laid-Open No. 10-201096

Disclosure of the invention

Problems to be solved by the invention

[0030] In the above conventional example, when a power supply interruption occurs in one main signal unit and a power supply interruption does not occur in the other main signal unit, one of them is always "normal". Therefore, the monitoring / control unit recognizes that there is no abnormality and determines that there is no abnormality. There will be no control over the unit.

[0031] Therefore, an optical output may be generated from the transmission-side main signal unit that is not controlled, and the reception-side optical main signal unit that receives the control stops activation based on optical input level detection. As a result, the main signal unit cannot be activated, and the forever and abnormal state force cannot be restored to the normal state. As a result, the entire WDM transmission equipment does not start up (system down).

[0032] Therefore, the present invention enables the main signal unit to return to an abnormal state force normal state even when an instantaneous power interruption occurs in any of the main signal unit, and thereby to start up the entire apparatus. The purpose is to do so.

Means for solving the problem

[0033] In order to solve the above-described problem, a power supply monitoring and control method according to the present invention includes a plurality of optical main signal unit units each having a separate on-board power supply and continuously connected. The first step of detecting the on-board power supply abnormality of the optical main signal unit, and when the on-board power supply abnormality is detected in the first step, the optical output of the other transmission side optical main signal unit is stopped And a second step.

That is, according to the present invention, when an abnormality occurs in the on-board power supply of one receiving-side optical main signal unit, the optical output of the other transmitting-side optical main signal unit is stopped. As a result, no optical output is given from the transmitting optical main signal unit to the receiving optical main signal unit. Therefore, the receiving side optical main signal unit does not start or stop when the input optical level exceeds the threshold value. Therefore, both main signal unit units are restarted, so that the entire device starts up. Therefore, it is possible to solve the problem that the entire WDM transmission equipment does not start up because the reception-side main signal unit cannot be started.

[0035] After the second step, it may further include a third step of restarting the entire system when it is determined that all monitoring targets are in a normal state.

[0036] Further, a first-stage system start-up process is executed between the first step and the second step, and after the second step, an on-board power supply for the receiving optical main signal unit When the system recovers normally, the second stage system startup process is executed and all monitoring targets are When it is determined that it is in a state, it is possible to execute the third-stage monitoring / control operation.

[0037] An on-board power supply that realizes the above-described power supply monitoring and control method has one receiving-side optical main signal among a plurality of optical main signal unit units that have separate on-board power supplies and are continuously connected. A first means for detecting an on-board power supply abnormality of the transmission unit, and a second means for stopping the optical output of the other transmission-side optical main signal unit when the first means detects the on-board power supply abnormality. It is characterized by having.

[0038] The second means may include means for restarting the entire system when it is determined that all the monitoring targets are in a normal state after the optical output is stopped.

[0039] Further, when the first means detects an on-board power supply abnormality, the first-stage system start-up process is executed, and the second means is the on-board of the reception side optical main signal unit. When power is restored to normal, the second stage system startup processing is executed, and when all monitoring targets are determined to be in the normal state, the third stage monitoring 'control operation is executed. May be included.

[0040] The first stage system start-up process is simply a process for setting the state before starting the apparatus, and the second stage system start-up process is The normal notification is received from all the units and the determination is waited. Further, the third monitoring / control operation is a process for starting the apparatus normal operation and starting the apparatus normally.

The invention's effect

[0041] According to the present invention, even if a power supply abnormal state (power supply instantaneous stop, instantaneous interruption, power supply sudden change, etc.) occurs from the station power supply in the device operation state, the entire device is self-recovered from the system down. Is certain.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of a power supply monitoring and control method and apparatus according to the present invention will be described with reference to the accompanying drawings.

Example "1,

FIG. 1 shows an embodiment [1] of a power supply monitoring and control method and apparatus according to the present invention. This embodiment and the conventional example shown in FIG. Of the recognition unit 42 The determination unit 43 is provided in the subsequent stage, and the monitoring / control interface 44 is connected to the determination unit 43. The monitoring / control interface 44 includes an individual control unit 441 in addition to the system control unit 442 (corresponding to the monitoring / control unit 45 in FIG. 10) that also uses conventional power. 441 is an individual control unit 281 also provided in the monitoring control interface 280 provided in the main signal unit 2 and an individual control unit 371 also provided in the monitoring control interface 370 provided in the main signal unit 3. Connected via individual control line B2.

[0043] These individual control units 281 and 371 are connected so that the WDM optical transmission / reception units 24 and 31 can be controlled to shut down, respectively. The system control units 282 and 372 correspond to the monitoring / control units 28 and 37 in FIG. 10, respectively.

The operating force of the determination unit 43 provided in the monitoring / control unit 4 is shown in the flowchart of FIG. The operation of the embodiment [1] shown in FIG. 1 will be described below with reference to the flowchart of FIG. In the same manner as described above, the patterns P1 and P2 will be described separately.

Pattern P1:

First, the determination unit 43 recognizes a normal notification or an abnormal notification from the reception unit 41 via the recognition unit 42 (step Sl). As a result, if all are normal notifications, the conventionally known system (entire transmission device) start-up process (unit control “none”: step T10) after step S3 is executed.

Note that in order to start up the system, firmware processing and hardware control operations are executed. Firmware is roughly classified into two types: core programs and application programs. The core program is a program that operates to initialize (initialize) the CPU (central processing device) and its hardware peripheral devices (RAMZROMZ communication control, etc.), and corresponds to the startup of the operating system. An application program is a program that runs after the completion of core program processing.

First, the determination unit 43 causes the monitoring / control interface 44 to start a monitoring / control operation (step S3). As a result, the firmware operation process is started, and the monitoring control interface 44 receives the monitoring control interface of the main signal unit 2 from the system control unit 442. First, start the firmware core program for the system control unit 282 in the interface 370 and the system control unit 372 in the interface 370 (step S31). (Step S32), hardware control becomes possible, and the control function in the transmission device 1 is started up (control such as shutdown is possible.) When startup of the core program is completed, application program processing is started. (Step S33).

[0047] When the start-up of the application program is completed, the units 2, 3, and 5 in the transmission device 1 can be monitored, and the normal operation start flow (step S4) is executed. In other words, the monitoring and control unit interface 44 starts the startup processing of the system control units 282 and 372 through the system control unit 442 (step S41). First, monitoring of the main signal unit 3 by communication establishment between the system control units is started (step S42), and further monitoring of communication establishment for the main signal unit 2 is started (step S43). Then, after monitoring by establishing communication with the clock unit 5 is started (step S44), the start-up of the entire transmission device 1 is completed (step S45).

[0048] In this way, the system startup of the entire WDM transmission apparatus 1 shown in Fig. 1 is completed and normal operation is performed. For example, in the main signal unit 3 of the host interface, If there is an instantaneous power interruption (step T1), the upper interface main signal unit 3 force abnormality notification is generated, so the process proceeds from step S2 to step S5. Since it is from the main signal unit 3, the control signal for shutting down the lower main signal unit 2 is determined by determining whether the individual control unit 441 in the monitoring / control interface 44 has unit control “present”. Give (steps S6, T4) o

[0049] As a result, the individual control unit 441 performs shutdown control on the individual control unit 281 in the monitoring control interface 280 of the main signal unit 2 that is considered to be operating normally via the individual control line Β2. Since the signal is given, the individual control unit 281 gives a shutdown signal to the WDM optical transmission / reception unit 24 (step Τ5).

[0050] As a result, the optical output of 24 powers of the WDM optical transmission / reception unit is stopped (step Τ6). Therefore, the WDM optical transmission / reception unit 31 in the upper main signal unit 3 receives the optical signal Μ2. The optical input is not detected (Step T7).

[0051] At this time, the optical component / optical module 32 is warmed up (preparing) (step T8), and the force is also changed to the restarted state (step T9), and the notification unit 36 changes the abnormality notification to normal notification and monitors it. It is sent to the receiving unit 41 of the control unit 4.

[0052] In this state, if it is determined in steps S1 and S2 that normal notifications have been received from all units, monitoring and control operations are started in the same manner as described above (step S3), and normal device operation start flow (steps) S4) will be executed.

[0053] FIG. 3 is a force that emphasizes the point of the present invention by particularly showing the operation of the embodiment [1] shown in FIG. 1 by a bold line. The basic configuration is the same as FIG.

[0054] A summary of the operation of the embodiment [1] is shown in the table of FIG. 4. As can be seen from this table power, the main signal unit 3 of the host interface causes a power failure, Only when the main signal unit 2 of the lower interface is normal, it is indicated that the shutdown control is performed for the main signal unit 2 of the lower interface because the error is notified. Pattern P2:

In the case of this pattern P2, as in the case of the conventional example, the pattern P1 may be considered in reverse. That is, when an output disconnection occurs in the on-board power supply unit 25 in the main signal unit 2 (step T11), the reception unit 41 that has received the notification of abnormality at this time from the notification unit 27 changes the recognition unit 42. The determination unit 43 sends the shutdown control signal from the individual control unit 441 to the individual control unit 371 of the main signal unit 3 as in the case of the pattern P1 (step T14). .

[0055] Thereby, the WDM optical transmission / reception unit 31 in the main signal unit 3 receives shutdown control (step T15), so that the optical output from the WDM optical transmission / reception unit 31 is stopped (step T16), and the main signal unit The WDM optical transceiver 24 in 2 does not detect optical input. Accordingly, as described above, the optical component / optical module (not shown) also moves the warm-up state force to the restarting state, and gives the abnormality notification power normal notification to the monitoring / control unit unit 4, so that the determination unit 43 Since the notifications from the notification units 27, 36, and 53 are recognized as being normal for all units, monitoring is performed so that the control unit operation (step S3) and the normal device operation (step S4) are executed. Control the control interface 44 (step T10). Example "2,

This embodiment [2] shows an embodiment in which the priority is low before the start of the normal operation of the apparatus or the immediate operation is not required.

[0056] Therefore, in this embodiment, in the monitoring and control unit unit 4, the state of the recognition unit 43 is collected after the recognition unit 42 (step T30). Therefore, a determination function unit 47 is provided for controlling the monitoring / control interface 44 by using different leveling functions according to the leveling determination result. In accordance with this leveling function, the main signal unit 2 also has a leveling identification unit 283 in the monitoring and control interface 280, and also in the monitoring and control interface 370 in the main signal unit 3. A belling recognition unit 373 is provided. Further, a leveling recognition unit 541 is provided in the monitoring / control interface 54 in the clock unit 5.

FIG. 6 shows the operation of the leveling determination unit 46 provided in the monitoring / control unit 4. Hereinafter, the operation of the leveling determination unit 46 will be described with reference to FIG. . In this embodiment [2], the following description is given separately for pattern P1 and pattern P2.

Pattern P1:

First, steps S1 and S2 are executed in the same manner as in the flowchart shown in FIG. 2. As a result, if any of all notifications is not normal, the step S2 force also advances to step S5, and the main interface of the higher level interface. Determine whether the on-board power supply 34 of signal unit 3 is normal or abnormal.

As a result, when it is found that the on-board power supply 34 of the main signal unit 3 of the host interface is abnormal, the system startup level L1 is first executed (step S7).

[0059] At this system startup level L1, the system startup is started (step S71), the core program operation is started (step S72), and the initialization is completed (step S73). When the initialization is completed, the main signal unit 2 and 3 can be controlled. This corresponds to steps S31 and S32 shown in FIG.

[0060] Therefore, at this point, the progrom processing enters the startup state leveling determination flow, As described above in step S6, the shutdown control of the main signal unit 2 of the lower level interface is applied when the unit control is determined to be present.

[0061] After applying shutdown control, when returning to step S1 and executing step S2, if there is still a notification that is not normal, the main signal unit is notified again in step S5, and the error is detected again. If so, the core program has already been started up, so the main signal unit 2 is immediately shut down without performing this start-up process.

On the other hand, when it is determined in step S5 that the on-board power supply 34 of the main signal unit 3 of the host interface is normal, the system shifts to the system startup level L2 (step S8).

[0063] This starts the leveling determination processing flow in the startup state (step S81), starts the application program (step S82), and makes the system monitorable. In this state, wait for normal notification from all units. At this time, start-up of the system control unit (force not shown in each of the monitoring / control unit interfaces 280 and 370) is started (step S83).

[0064] When it is found that all notifications are normal by executing steps S1 and S2 again, processing of system startup level L3 is executed. This corresponds to the monitoring and control operation (Step S40) .In the same way as the normal operation start flow (Step S4) in Fig. 2, the system control unit is first started up (Step S41). The start of monitoring of each unit 2 and 3 in the transmission apparatus 1 by the establishment of communication and the monitoring of the clock unit 5 are started, and the start-up of the entire transmission apparatus 1 is completed.

[0065] As described above, the startup level L1 is simply a process for setting a state (shutdown control function) that needs to be set before starting up the device, and the startup level L2 The system is put in a standby state for receiving a normal notification from JST, and at the start-up level L3, the normal operation of the apparatus is started and the transmission apparatus can be started up normally.

[0066] Receiving level L3, each unit 2, 3, 5 can recognize the start of normal operation. Pattern P2:

Also in this embodiment, the same shutdown control process is performed from the main signal unit 3 to the main signal unit 2.

[0067] As described above, in the past, after receiving and recognizing all the normal notifications from each unit, the normal operation of the device is started and the startup process is performed using the system control signal. In response to the notification, the system control signal starts to operate, so that the force that cannot control the shutdown for each unit can be controlled. It is possible to perform shut-down control at the same time so that the unit that has caused a power failure can be notified of normality. Therefore, it is possible to start the monitoring / control unit operation and start the normal operation of the device when all units are in the standby state until they send a normal notification and all are normally notified.

Brief Description of Drawings

FIG. 1 is a block diagram showing an embodiment [1] of a power supply monitoring and control method and apparatus according to the present invention.

FIG. 2 is a flowchart showing the processing operation of the monitoring control unit in the embodiment [1] of the power monitoring / control method and apparatus according to the present invention shown in FIG. 1.

FIG. 3 is a block diagram showing an operation part of the present invention in the embodiment [1] of the present invention shown in FIG.

FIG. 4 is a diagram showing a failure correspondence table in the case of pattern P1 in the embodiment [1] of the present invention shown in FIG.

FIG. 5 is a block diagram showing an embodiment [2] of the power supply monitoring and control method according to the present invention.

FIG. 6 is a flowchart showing the processing operation of the monitoring control unit in the embodiment [2] of the power supply monitoring and control method and apparatus according to the present invention shown in FIG.

FIG. 7 is a block diagram schematically showing the internal structure of a conventional WDM transmission apparatus.

[FIG. 8] Corresponds to the block diagram shown in FIG. 7 and particularly shows the flow of the power supply going to each unit in the building power supply. FIG. 9 is a waveform diagram showing how each unit behaves when the station power supply causes a power interruption in FIG.

FIG. 10 is a block diagram showing a configuration example of a power supply monitoring / control device according to a conventional example. Brief description of symbols

1 WDM transmission equipment

2 Main signal section (lower interface) unit

21 Optical line accommodation

22 Termination

23 WDM wavelength converter

24 WDM optical transceiver

25 Onboard power supply

26 Voltage monitor

27 Notification section

280 Monitoring 'control interface

281 Individual control section

282 System control section

283 Leveling recognition unit

3 Main signal section (upper interface) unit

31 WDM optical transceiver

32 Optical components 'Light module'

33 WDM optical amplifier output optical receiver

34 Onboard power supply

35 Voltage monitor

36 Notification section

370 Monitoring 'control interface

371 Individual control section

372 System control section

373 Leveling recognition unit 4 Monitoring / control unit

41 Receiver

42 Recognition part

43 Judgment part

44 Monitoring 'control interface

441 Individual control unit

442 System control section

46 Leveling judgment part

47 Judgment function block

5 Clock 咅 unit

51 Onboard power supply

52 Voltage monitor

53 Notification section

54 Monitoring 'control interface

541 Leveling recognition unit

In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims

The scope of the claims

[1] A first step of detecting an on-board power supply abnormality of one receiving-side optical main signal unit among a plurality of continuously connected optical main signal units having separate on-board power sources;

A second step of stopping the optical output of the other transmitting-side optical main signal unit when the on-board power supply abnormality is detected in the first step;

Power supply monitoring / control method characterized by comprising:

[2] In claim 1,

A power monitoring / control method, further comprising a third step of restarting the entire system when it is determined that all monitoring targets are in a normal state after the second step.

[3] In claim 1,

The first-stage system startup processing was executed between the first step and the second step, and after the second step, the on-board power supply of the receiving optical main signal unit was restored normally The second stage system startup process is executed, and when it is determined that all monitoring targets are in the normal state, the third stage monitoring 'power monitoring' control method is performed. .

[4] In claim 3,

The system startup process in the first stage is simply a process that requires setting the status before starting up the device. The system startup processing power in the second stage receives normal notifications from all units. A power monitoring / control method characterized in that the third stage monitoring / control operation is a process for starting the normal operation of the apparatus and starting the apparatus normally.

[5] First means for detecting an on-board power supply abnormality of one receiving-side optical main signal unit among a plurality of continuously connected optical main signal units having separate on-board power supplies, A second means for stopping the optical output of the other optical transmitter main signal unit when the on-board power supply abnormality is detected by the first means;

Power supply monitoring / control device characterized by comprising

[6] In claim 5, The second means includes a means for restarting the entire system when it is determined that all monitoring targets are in a normal state after the optical output is stopped.

[7] In claim 5,

When the first means detects the on-board power supply abnormality, the first-stage system start-up process is executed, and the second means restores the on-board power supply of the receiving optical main signal unit normally. The power supply is characterized in that it includes means for executing the second stage system start-up process and executing the third stage monitoring 'control operation when it is determined that all monitoring targets are in a normal state. Monitoring · Control device.

[8] In claim 7,

The system startup process in the first stage is simply a process for setting the state that needs to be set before starting up the device. The system startup processing power in the second stage receives normal notifications from all units and A power supply monitoring / control device characterized in that it is a process for waiting for a judgment, and that the third-stage monitoring / control operation is a process for starting normal device operation and starting the device normally.