JP2010147804A - Transmitting apparatus, and unit mounted on the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transmitting apparatus and the like capable of facilitating cause analysis when faults or failures are generated. <P>SOLUTION: The transmitting apparatus on which a plurality of units packaged every for a function is combined and mounted has a nonvolatile storage that sequentially stores a log in which state information of the units is obtained by logging so that the log can be utilized in cause analysis for faults when faults are generated in the transmitting apparatus. However, the state information includes at least any one of a mounting state of the units, a state of communications line connected to the transmitting apparatus, an alarm generation state of the units or the transmitting apparatus, and a setting state of the units or the transmitting apparatus. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a transmission apparatus for recording state information and a unit mounted on the transmission apparatus.

In a transmission device configured by combining hardware packaged for each function, it is easy to analyze the failure or failure and repair the failure by recording the failure information detection information at the time of failure or failure of the transmission device etc. For example, the following proposals are disclosed in Patent Document 1 and Patent Document 2 below.
JP 2000-259455 A JP 2008-90505 A

  In a conventional transmission device etc., when an alarm is generated on a certain communication line, the past state (line status, change of various settings, occurrence of other alarms, etc.) that would lead to the alarm is unknown, The cause analysis had to be performed only with the events that occurred at the time of the alarm. However, it may be difficult to analyze the root cause only from the state that is superficially grasped at the time of alarm occurrence.

  In addition, when an alarm is generated on a line that is actually operated, priority is given to quickly recovering from the failure, and there are few cases where the cause can be sufficiently investigated at the local station where the alarm occurred. In addition, if there is a special case such as escalation (expansion and intensification) in the customer's maintenance work category on the line that is being operated, a failure occurs on the transmission equipment manufacturer's side. It is difficult to investigate the cause of each and investigate the cause.

  For example, in order to quickly restore a line in which an alarm is generated, a unit that is suspected of a failure packaged for each function is replaced with a spare replacement unit. The replaced suspected faulty unit is returned to the manufacturer's analysis room as a faulty product. Even if a fault reproduction test or fault cause investigation is performed, the fault is not reproduced, and the cause analysis is considered difficult.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a transmission apparatus and the like that can facilitate cause analysis when a failure or failure occurs.

  In one aspect of the transmission apparatus according to the present invention, in the transmission apparatus that is implemented by combining a plurality of units packaged for each function, a failure has occurred in the transmission apparatus that logs the status information of the unit obtained by logging. A non-volatile recording unit that sequentially records is provided so that failure cause analysis can be used. However, the state information includes at least one of information on a unit mounting state, a state of a communication line connected to the transmission device, an alarm generation state of the unit or the transmission device, and a setting state of the unit or the transmission device.

  The transmission device according to the present invention preferably includes a state change monitoring unit that detects a change in the state information. When the state change monitoring unit detects a change in the state information obtained by logging, the nonvolatile memory The sex recording unit may record a log.

  Thereby, by recording in the nonvolatile memory only when the state of the transmission device has changed, it becomes possible to reduce the capacity of data to be written to the nonvolatile memory and the number of times to write data to the nonvolatile memory. It is a low-cost and quick recording process.

  Moreover, in a certain aspect of the transmission apparatus according to the present invention, more preferably, the logging may be executed at predetermined intervals set in advance.

  Thus, for example, if the time of the monitoring cycle is individually set appropriately according to the importance of the communication line to which the transmission device is connected, monitoring is performed at a rate of once every two normal cycles for devices with a small number of lines. Thus, it is possible to reduce the capacity of data written to the nonvolatile memory and the number of times of writing to the nonvolatile memory.

  Moreover, in a certain aspect of the transmission apparatus according to the present invention, a monitoring item setting unit to which setting information for arbitrarily selecting in advance state information acquired by logging may be further provided.

  As a result, for example, if the transmission device manufacturer selects and sets only monitoring alarms that are considered important, for example, it can reduce the amount of data to be written to the nonvolatile memory and write to the nonvolatile memory. The number of times can be reduced. Further, when an alarm is generated on the communication line and the alarm log is stored, the nonvolatile memory having a limited memory capacity is sequentially overwritten as long as the alarm continues. As a result, it can be avoided that the initial state where the alarm is generated is overwritten and the analysis becomes difficult. Further, even a non-volatile memory with a limited number of times of writing can be dealt with.

  Moreover, in a certain aspect of the transmission apparatus according to the present invention, it is more preferable that a communication unit that enables output of a log recorded by the nonvolatile recording unit to the outside of the transmission apparatus may be provided.

  In another aspect of the transmission device according to the present invention, preferably, the communication device includes a communication unit that can output a log recorded by the non-volatile recording unit to the outside of the transmission device. When a change in information is detected, notification of change in state information and a log recorded by the nonvolatile recording unit may be notified.

  This makes it possible to grasp the status remotely, for example, when the normal package replacement procedure cannot be restored, when there are multiple packages suspected of malfunctioning, or when a spare package cannot be prepared in a short time. This makes it possible to restore the communication line in a shorter time. In addition, for example, by providing a means for communicating log data independently, it is possible to easily analyze and recover from failures and failures even if the spare package cannot be replaced if the status is grasped from a remote location. It becomes possible to do.

  The transmission device according to the present invention may further include a voltage monitoring unit that detects a power supply voltage supplied to the transmission device, and the state information may include voltage information detected by the voltage monitoring unit.

  Even if a failure occurs in a transmission device due to a failure of a communication device due to a lightning strike, a voltage failure of a communication line, or power supply construction of a station building where the communication device is installed, an internal failure of the transmission device itself Alternatively, it is possible to determine whether it is a failure or an abnormality caused by an external factor in a short time, and the communication line can be restored. In addition, the power supply system is affected by fluctuations in the power supply system due to the occurrence of lightning strikes, momentary voltage drop or momentary power interruption of the external power supply, and power supply output drops or power interruptions caused by power supply construction problems. For example, if the monitoring unit records various states of the apparatus when the voltage state changes, for example, it becomes possible to easily analyze and recover from a failure or failure.

  The transmission device according to the present invention may further include an impact monitoring unit that detects an impact applied to the transmission device, and the state information may include the impact information detected by the impact monitoring unit.

  Further, in another aspect of the transmission apparatus according to the present invention, preferably, even when the main power of the transmission apparatus is turned off, an auxiliary power source that activates the impact monitoring unit is provided, and the nonvolatile recording unit stores the impact information. It may be recorded.

  As a result, even if the transmission device fails while being delivered to the customer as a product from the manufacturer, or when a failure occurs during the work of mounting the package on the device, or when a failure occurs due to impact during operation A possible transmission device. Also, when the transmission device is dropped during transport, it may cause an impact on the transmission device and the package, or it may be damaged due to an unexpected impact when handling the installation work or inserting the package unit into the device. As a result, it is easy to analyze the cause of such a failure. In addition, by providing a spare battery and monitoring the impact regardless of whether the main power supply is on or off and operating the recording circuit, failure analysis during subsequent transportation is facilitated.

  In a certain aspect of the transmission device according to the present invention, it is more preferable that a temperature monitoring unit that detects the temperature of the transmission device is provided, and the state information may include temperature information by the temperature monitoring unit.

  As a result, even when an electronic component used in the communication device fails due to heat generation or the like, the transmission device can easily determine the cause. In addition, by providing a temperature monitoring means, it is possible to record the device state of a sudden change in temperature state and facilitate the analysis of the cause of failure. On the other hand, if the temperature at the time when a change in state such as an alarm is recorded in the apparatus is recorded, it will help to quickly analyze the cause.

  Further, in an aspect of the transmission apparatus according to the present invention, it is more preferable that the transmission apparatus further includes a repetition pattern detection unit that detects duplication of state information that repeatedly occurs, and the nonvolatile recording unit logs corresponding to the duplication of state information. The recording amount may be reduced by not performing the recording.

  Thereby, as a feature of the alarm generation at the time of the failure of the communication device, for example, when the communication line is abnormal, a specific alarm is generated and the recovery is repeated. When performing cause analysis, such alarms are repeatedly generated and restored over a long period of time, and log data is overwritten. As a result, the initial state that triggered the occurrence may be overwritten and erased, making it difficult to analyze the cause. Even in such a case, if there is a means for detecting the occurrence of the same alarm and the repetition of recovery, or a means for detecting that the repetition has not occurred for a certain period, the first time when recording as a log Only the last recording when the repetition occurs and the last recording when it does not occur for a certain period can be performed, and the capacity of the log data of the device state written to the nonvolatile memory can be reduced, and the necessary information is ensured Since it can be recorded, the cause analysis when a failure or failure occurs can be facilitated.

  In one aspect of the transmission apparatus according to the present invention, more preferably, the transmission apparatus is connected to a monitoring control apparatus that monitors a communication state of the transmission apparatus, and the nonvolatile recording unit records a communication log with the monitoring control apparatus. May be.

  In another aspect of the transmission device according to the present invention, the transmission device preferably includes a communication failure detection unit that detects a communication failure that has occurred in the transmission device, and the non-volatile recording unit includes the communication failure detection unit as a communication failure. May be recorded before and after detecting a communication failure.

  As a result, it is possible to investigate the cause of an abnormal state or the like that has occurred in the transmission device due to access from an external device such as a monitoring device other than the failure of the transmission device itself. The transmission device includes a CPU and firmware, exchanges data with an external operation system (typically a monitoring device), and sets, controls, and monitors the transmission device. However, when a command or access that cannot be handled by the CPU and firmware on the transmission apparatus side is received from an external operation system, it is considered that an abnormal state may occur. In order to cope with this, if a means for recording command reception and access from the operation system is provided, it is possible to determine whether it is a hardware problem of the communication device, a firmware problem, or an external operation system problem. This makes it possible to easily analyze and recover from failures and failures. In addition, it is possible to determine whether the failure or failure is due to an external factor or the device, and it is possible to easily analyze the cause when the failure or failure occurs. Moreover, when it is an external factor, it may be recovered by initializing the apparatus, and the recovery can be performed in a short time.

  In one aspect of the transmission apparatus according to the present invention, more preferably, each unit may include a nonvolatile recording unit.

  Further, in one aspect of the unit according to the present invention, in the unit packaged for each function and mounted on the transmission device, the unit is mounted so that it can be used for failure cause analysis when a failure occurs in the transmission device. Non-volatile that sequentially records logs obtained from the unit by logging status information including at least one of status, communication line status, unit or transmission device alarm occurrence status, unit or transmission device setting status A recording unit is provided.

  As a result, it is possible to cope with the case where the suspected package unit is returned to the manufacturer's analysis room for cause analysis and the failure is not reproduced, and it is possible to avoid difficulty in analysis because the package unit does not have a log function. In addition, by providing means for recording the device status in the package unit, when the suspicious package unit is returned to the manufacturer's analysis room for cause analysis, the package unit is a non-volatile in which the device status is recorded If a memory is provided, the cause of the failure can be easily analyzed by reading and analyzing the contents of the nonvolatile memory. In addition, it is possible to facilitate analysis and recovery of a failure or failure of the returned package unit. As a result, the transmission device and the package unit are improved, and an effect can be expected to reduce unreproduced failures.

  It is possible to provide a transmission apparatus or the like that can easily analyze the cause when a failure or failure occurs.

  FIG. 1 is a diagram illustrating an example of a transmission apparatus (typically an optical communication apparatus) according to the present embodiment. In FIG. 1, a transmission apparatus 100 includes n clock system packages 110 (1)... 110 (n) (hereinafter referred to as clock system packages 110 as appropriate) and n main signal system packages 120 (1). 120 (n) (hereinafter referred to as main signal system package 120 as appropriate) and n control system packages 130 (1)... 130 (n) (hereinafter referred to as control system package 130 as appropriate). The main signal system package 120 is optically connected to another transmission device or the like by an optical fiber or the like, and transmits and receives an optical communication signal to be transmitted.

  Here, n is an arbitrary natural number, and the number of packages may not be the same. In the example illustrated in FIG. 1, the transmission apparatus 100 includes a clock system package 110, a main signal system package 120, and a control system package 130, and includes n sets. Each package shown in FIG. 1 is assembled as a unit for each package, and a desired transmission device 100 is provided by mounting a necessary number of necessary units on the housing of the transmission device 100.

  Each of the clock packages 110 (1)... 110 (n) includes clock system main circuit portions 111 (1). The main signal system packages 120 (1)... 120 (n) include main signal system main circuit sections 121 (1). The control system packages 130 (1)... 130 (n) include control system main circuit units 132 (1).

  The control system package 130 is an event recorder that records state information of the clock system package 110 corresponding to the control system package 130, the main signal system package 120 corresponding to the control system package 130, and the control system package 130 itself. 131 (1)... 131 (n) (hereinafter referred to as event recorder 131 as appropriate). The event recorder unit 131 includes a LAN port and the like, and is connected to an external device via a LAN line or the like so that data such as various state information recorded in the event recorder unit 131 can be transmitted.

  FIG. 2 is a configuration block diagram conceptually illustrating the configuration of the event recorder unit 131. In FIG. 2, the information collecting unit 210 includes at least a clock system event input from the clock system package 110, a main signal system event input from the main signal system package 120, and a control system event input from the control system package 130. Is an information interface to which is input.

  The event recorder unit 131 includes a voltage monitoring unit 220 that detects and monitors the power supply voltage of the transmission apparatus 100. In addition, the event recorder unit 131 includes a temperature monitoring unit 230 that detects and monitors the temperature of the transmission device 100. In addition, the event recorder unit 131 includes an impact monitoring unit 240 that detects and monitors the impact of the transmission apparatus 100. Each detection information from the voltage monitoring unit 220, the temperature monitoring unit 230, and the impact monitoring unit 240 is input to the information collecting unit 210.

  In addition, the information selection unit 260 selects and extracts predetermined information or arbitrary information as necessary from various information such as state information input to the information collection unit 210. Reference numeral 280 denotes a timer unit, 290a denotes a volatile memory, and 290b denotes a nonvolatile memory. In the following description, the volatile memory 290a and the nonvolatile memory 290b are collectively referred to as a storage unit 290 as appropriate. Reference numeral 250 denotes a state change monitoring unit that detects and extracts the presence or absence of any state information selected by the information selection unit 260.

  Reference numeral 200 denotes a communication unit, which is communicably connected to an external device via a LAN line or the like. Reference numeral 270 denotes a repetitive pattern detection unit that extracts a repetitive pattern by detecting the presence or absence of the same alarm occurrence or the like for any state information selected by the information selection unit 260.

  In the optical communication operation state, the transmission apparatus 100 monitors the states of the clock system package 110, the main signal system package 120, and the control system package 130 by logging and records them in the event recorder unit 131. FIG. 1 shows an example in which log information from the clock system package 110, the main signal system package 120, and the control system package 130 is directly input. However, for example, the monitoring control unit 140 of the transmission apparatus 100 may execute logging and record the log result in the storage unit 290. Further, the monitoring item setting unit 141 may include monitoring items regarding what the monitoring control unit 140 monitors.

  The event recorder unit 131 receives status information and the like from the clock system package 110, the main signal system package 120, and the control system package 130 by the information collection unit 210 and sends them to the information selection unit 260. Note that the input to the information collecting unit 210 is not limited to one input from each package, and a plurality of input lines are appropriately provided as necessary, and a plurality of status information can be input. To do.

  For example, the information selection unit 260 can appropriately select predetermined and arbitrary information according to the type of information required for failure cause analysis on the manufacturer side. Information selected by the information selection unit 260 is recorded in the storage unit 290. In this case, the information selection unit 260 may directly record in the non-volatile memory 290b, but may once write in the work area of the volatile memory 290a. Information written in the work area of the volatile memory 290a may be transferred to the nonvolatile memory 290b and recorded in the nonvolatile memory 290b when a predetermined condition is satisfied as necessary.

  The frequency of writing to the storage unit 290 or the frequency of logging is appropriately written according to an arbitrary writing cycle set in the timer unit 280 or an arbitrary logging cycle. Further, when the volatile memory 290a is used, only when the state change monitoring unit 250 detects a change in the state information input to the state change monitoring unit 250, the volatile memory 290a is always written. It is good also as writing in the non-volatile memory 290b.

  The communication unit 200 may be configured by a wireless LAN transceiver or receiver, for example, and enables connection to a LAN network or the like connected to an external device. The monitoring blocks of the voltage monitoring unit 220, the temperature monitoring unit 230, and the impact monitoring unit 240 may be individually mounted on the clock system package 110, the main signal system package 120, and the control system package 130, respectively. As shown in FIG. 4, the event recorder unit 131 may be mounted only.

  If the monitoring blocks of the voltage monitoring unit 220, the temperature monitoring unit 230, and the impact monitoring unit 240 are individually mounted on the clock system package 110, the main signal system package 120, and the control system package 130, each package unit It is preferable because more detailed status information can be collected. Further, if the monitoring blocks of the voltage monitoring unit 220, the temperature monitoring unit 230, and the impact monitoring unit 240 are mounted only on the event recorder unit 131, the status information of the transmission device 100 can be easily collected in a small size and at a low cost. Therefore, it is preferable.

  The standby power supply 2000 is a so-called battery (storage battery) that is different from the main power supply that starts the transmission apparatus 100 and is a backup battery. The standby power supply 2000 may be mounted on the event recorder unit 131 as an uninterruptible power supply (UPS), or may be mounted on the clock system package 110, the main signal system package 120, and the control system package 130, respectively. However, when monitoring is performed only when the transmission apparatus 100 is in normal operation, the standby power supply 2000 is not necessary.

  In a situation where the transmission device 100 is being transported and the like, and the main power supply of the transmission device 100 is not turned on, the standby power source 2000 is used when it is desired to monitor an impact, a temperature change, or the like generated during that time. Therefore, any one of the clock system package 110, the main signal system package 120, and the control system package 130 includes any one or a plurality of monitoring blocks among the voltage monitoring unit 220, the temperature monitoring unit 230, and the impact monitoring unit 240, respectively. When provided, the package preferably includes a standby power supply 2000.

  In addition, supplementing the logging, if logging is necessary in a transmission device connected to a telephone, for example, where a large-capacity storage device cannot be provided for economic reasons or other reasons, the logging program and The log program collects the log data and records it in the log buffer, and when the maintenance manager checks the log data, the log buffer contents are dumped to the terminal device by using a function such as a debugger. There is a way to output.

  In addition, the log management target device can include various application programs and software related to logging processing and a debugger. In addition to the application program memory used by various application programs, a log buffer for recording log data may be allocated to the memory in the log management target apparatus. The log management target device may be connected to a dumb terminal (for example, a display terminal having a function of displaying or printing received data).

  In the logging process, log data necessary for the log management target device is collected and written to the log buffer. For writing to the log buffer, a loop buffer system in which the oldest data is overwritten with new data may be adopted. The above is the outline of the embodiment.

(First embodiment)
FIG. 3 is a conceptual block diagram of a transmission apparatus for explaining the first embodiment. In FIG. 3, parts corresponding to the parts shown in FIGS. 1 and 2 are denoted by corresponding names and corresponding symbols, and the description thereof is simplified.

  As shown in FIG. 3, the clock system package 3110, the main signal system package 3120, and the control system package 3130 of the transmission apparatus 3100 are all equipped with the event recorder unit 131 having the functions described in FIG. And That is, the clock system package 3110 includes a clock system event recorder unit 3112, the main signal system package 3120 includes a main signal system event recorder unit 3122, and the control system package 3130 includes a control system event recorder unit 3131. To do.

  The opposite station transmission apparatus 4100 is installed in a station or the like facing the transmission apparatus 3100 and is connected to the transmission apparatus 3100 via an optical fiber communication line 3150 including a main signal transmission line 3150a and a main signal reception line 3150b. Communicate.

  The transmission apparatus 3100 is supplied with a master clock from the outside and is operated based on the master clock. The clock system main circuit unit 3111 in the clock system package 3110 generates various clocks synchronized with the master clock supplied from the outside. The generated various clocks are also supplied to the main signal system package 3120 and the control system package 3130, respectively.

  In the following description, a typical example will be described in which the connection between the clock system package 3110 and the main signal system package 3120 is unstable and the main signal system package 3120 enters a failure state.

  When a clock synchronized with the master clock generated by the clock system package 3110 is not supplied to the main signal system package 3120, the main signal system main circuit unit 3121 detects "clock loss" and issues an alarm. In addition, when the clock synchronized with the master clock generated by the clock system package 3110 is not supplied to the main signal system package 3120, the clock is in a free-run state in the main signal system main circuit unit 3121. In a state out of synchronization, the main signal continues to be transmitted via the main signal transmission line 3150a.

  In this case, in the opposite station transmission apparatus 4100, the received signal received via the main signal transmission line 3150a fluctuates with respect to the original clock accuracy. Therefore, the synchronization state recognized by the transmission apparatus 4100 of the opposite station is repeatedly detected as “synchronization detection” − “out of synchronization” − “synchronization detection” − “out of synchronization”.

  The transmission apparatus 4100 of the opposite station that repeatedly detects “synchronization detection” − “out of synchronization” sends a signal indicating “alarm generation” state to the transmission apparatus 3100 as “synchronization detection” − “out of synchronization” − “synchronization detection”. "-" Out of synchronization "and intermittent transmission in response to repeated detection. Thereby, the transmission apparatus 3100 repeats detection-recovery-detection-recovery of detection and recovery of the “alarm generation” signal.

  The main signal system event recorder unit 3122 writes the alarm issue information to the nonvolatile memory 290b of the storage unit 290 together with the occurrence time of the “clock loss” alarm. In the storage unit 290, it is assumed that data is once written in the volatile memory 290a, and then the data is transferred to the nonvolatile memory 290b under a predetermined condition.

  Next, the occurrence status information of the “clock loss” alarm transmitted from the transmission device 4100 of the opposite station via the main signal reception line 3150b is written into the nonvolatile memory 290b of the storage unit 290 together with the information on the occurrence time. Further, at the time of subsequent recovery, the recovery fact is written into the nonvolatile memory 290b of the storage unit 290 together with the recovery time.

  Next, when the occurrence and recovery of an alarm relating to “clock loss” is input again, the repeated pattern detection unit 270 detects that the same failure has occurred repeatedly and once volatilizes. The alarm information written in the volatile memory 290a is prevented from being transferred to and written in the nonvolatile memory 290b.

  As a maintenance work under such a situation, an alarm is detected in the main signal system package 3120 of the transmission apparatus 3100. Therefore, the main signal system package 3120 of the transmission apparatus 3100 is changed to an equivalent spare package unit. Each unit will be replaced. It is assumed that the clock connection between the clock system package 3110 and the replaced main signal system package 3120 is recovered and stabilized by the package replacement, and can be recovered from the failure state.

  The original main signal system package 3120 that has been replaced is returned to the manufacturer that manufactured the transmission apparatus 3100, and failure analysis of the main signal system package 3120 is performed in a quality assurance room or the like. On the other hand, in the case of the above-described typical example, there is no problem in the original main signal system package 3120 that has been replaced because the problem is a clock connection between the packages.

  For this reason, no particular abnormality is found in the original main signal system package 3120 that has been replaced by the manufacturer's retest, and an unreproduced failure occurs. Therefore, the main signal system package 3120 does not include the event recorder unit 131. If so, the cause of the failure cannot be determined.

  In the first embodiment, the log state of occurrence of failure recorded in the main signal system event recorder unit 3122 included in the main signal system package 3120 is read on the manufacturer side. More specifically, failure analysis is performed by reading log information from the nonvolatile memory 290b on the manufacturer side.

  In the non-volatile memory 290b, information of “clock loss” of the main signal system package 3120 itself and “alarm generation” status received from the transmission apparatus 4100 of the opposite station are recorded. Based on these pieces of information, the transmission optical signal output from the main signal transmission line 3150a as a result of the clock input from the clock system package 3110 to the main signal system package 3120 being in a disconnected state is transmitted. It is easily determined that the “abnormality occurrence” alarm is received from the transmission device 4100 of the opposite station. In addition, since not all alarm recovery information is recorded but the repeated state is not recorded, even if the storage unit 290 does not have a relatively large capacity, the “clock loss” information at the time of occurrence is also overwritten. The analysis is possible because it is stored without being stored.

  FIG. 4 is an operation flowchart for explaining a typical example of recording processing in the storage unit 290. Therefore, typical examples of the recording process will be sequentially described based on the steps shown in FIG. As the nonvolatile memory 290b, a rewritable memory such as a hard disk, a flash memory, or an EEPROM can be used.

(Step S41)
The information selection unit 260 extracts from the state information collected by the information collection unit 210 only information set and selected in advance based on a request from the manufacturer. If the information selection unit 260 extracts only information selected and set in advance, the process proceeds to step S42. If the information selection unit 260 does not extract only information selected and set in advance, the process waits in step S41.

(Step S42)
The state change monitoring unit 250 detects whether the information selected by the information selection unit 260 has changed in state. For example, the state change monitoring unit 250 detects whether or not the normal communication state has changed to a state in which some kind of alarm has been issued. Further, the state change monitoring unit 250 detects whether or not a temperature change has occurred in the detected temperature information, for example.

  If the state change monitoring unit 250 detects that the information selected by the information selection unit 260 has changed, the process proceeds to step S43. Further, if the state change monitoring unit 250 does not detect that the information selected by the information selection unit 260 has changed, the process returns to step S41.

(Step S43)
The state change monitoring unit 250 records state information that has changed and a log of the occurrence time and the like in the volatile memory 290a.

(Step S44)
The repetition pattern detection unit 270 detects whether or not the information selected by the information selection unit 260 includes a repeated pattern. If the repetitive pattern detection unit 270 detects that the information selected by the information selection unit 260 includes an overlapping repetitive pattern, the process proceeds to step S45. If the repeated pattern detecting unit 270 does not detect that the information selected by the information selecting unit 260 includes an overlapping repeated pattern, the process proceeds to step S46.

(Step S45)
The repeat pattern detection unit 270 transfers only the time log from the volatile memory 290a to the nonvolatile memory 290b.

(Step S46)
The repetitive pattern detection unit 270 transfers information selected by the information selection unit 260 including all state information from the volatile memory 290a to the nonvolatile memory 290b.

(Step S47)
The nonvolatile memory 290b records information transferred from the volatile memory 290a.

  Even when the same alarm is repeatedly issued repeatedly by the above-described operation processing of the event recorder unit 131, the concern that the nonvolatile memory 290b will be over capacity is reduced, and necessary alarm information, status information, and the like are appropriately stored. It is possible to keep it.

(Second embodiment)
Since the basic configuration is already illustrated in FIG. 3, the second embodiment will be described with reference to FIG. As shown in FIG. 3, a station building power supply is connected to the transmission apparatus 3100, and this station building power source is connected to a clock system package 3110, a main signal system package 3120, and a control system package 3130 as a main power source. In the following description, a case will be described as a typical example in which a lightning strike occurs in a station where the transmission apparatus 3100 is installed and an abnormality occurs in the transmission apparatus 3100.

  When there is a lightning strike in the station building and an instantaneous abnormality occurs in the power supply voltage supplied to the station building, the station power supply that supplies power to each transmission device 3100 in the station also has a surge voltage etc. It seems that the abnormality cannot be absorbed. For example, if the power-off state occurs in a short time such as several milliseconds, the event recorder unit 131 mounted on the clock system package 3110, the main signal system package 3120, and the control system package 3130, respectively. The voltage monitoring unit 220 detects the voltage fluctuation. Then, “power supply instantaneous interruption” occurrence information is recorded together with the voltage fluctuation time in the nonvolatile memory 290b in the event recorder unit 131 provided in each of the packages 3110, 3120, 3130.

  Thereafter, an alarm is generated in the main signal system package 3120. In the main signal system event recorder unit 3122 in the main signal system package 3120, the alarm in the main signal system package 3120 is recorded in the nonvolatile memory 290b together with the alarm occurrence time. In this case, it is assumed that no alarm is generated in other packages except for the main signal system package 3120 included in the transmission apparatus 3100.

  Under such circumstances, the maintenance person determines that the failure of the main signal system package 3120 is caused by an alarm of the main signal system package 3120, so the maintenance person replaces and replaces the main signal system package 3120 with a spare main signal system package. To do. The alarm is restored by replacement by the maintenance person. In addition, the main signal system package 3120 that has issued the alarm is returned to the manufacturer side, and a failure diagnosis is performed in the quality assurance room or the like.

  If the main signal system package 3120 does not include the main signal system event recorder unit 3122, no particular abnormality is found in the retest by the manufacturer, and the failure cannot be reproduced, and the cause is not clarified. It is assumed.

  In the second embodiment, the maintenance person reads a log recorded in the nonvolatile memory 290b included in the main signal system event recorder unit 3122. The maintenance person can grasp from the log recorded in the non-volatile memory 290b that an “in-device alarm” has been issued immediately after the “power supply interruption” and the time at which it occurred.

  Therefore, the maintenance person can determine that the power supply interruption is a primary cause and an alarm in the apparatus is generated. Furthermore, since it can be confirmed that there is no abnormality in the collected main signal system package 3120 by checking whether there is a failure or not, the maintenance person has an alarm in the main signal system package 3120, but the abnormality is recovered and only the alarm is maintained. I can guess that there was.

  Further, in the above description, it has been described that only the main signal system package 3120 is in the alarm holding state. However, in the case of the clock system package 3110 and the control system package 3130, alarms are issued and restored individually. It is possible that only certain packages will remain in the alarming state. Even in such a case, the cause can be surely analyzed by collecting the individual packages 3110, 3120, and 3130 that have issued the alarm.

(Third embodiment)
Since the basic configuration has already been illustrated in FIG. 3, the third embodiment will be described with reference to FIG. The transmission apparatus 3100 is configured to perform setting, monitoring, control and the like of the transmission apparatus 3100 from the outside of the transmission apparatus 3100 by a monitoring control apparatus (or operating system) 1000 connected to the outside. The monitoring and control apparatus 1000 is managed and controlled, for example, by a user of the transmission apparatus 3100 and its optical fiber communication line 3150 with a function based on a management function program necessary for the user. For this reason, the monitoring and control apparatus 1000 itself does not collect logs necessary for failure analysis on the manufacturer side, and the status information of all the package units such as the plurality of transmission apparatuses 3100 and 4100 is converted into a single monitoring control. Collecting and managing by the apparatus 1000 is also not realistic considering the large amount of information and its communication load.

  In the third embodiment, the monitoring control apparatus 1000 accesses the transmission apparatus 3100 in the order of the predetermined command 1 followed by the command 2, and the command 1 from the monitoring control apparatus 1000 due to some factor. Description will be made assuming that data is missing and only command 2 is received by transmission apparatus 3100. In such a situation, an unexpected procedure is performed, and therefore, an abnormality is detected in the control system main circuit 3132 of the control system package 3130, and a hang-up state may occur.

  The transmission device 3100 receives the command 2 different from the scheduled procedure from the supervisory control device 1000, whereby the fact that the command 2 is received and the reception time thereof are recorded in the control system event recorder unit 3131. Thereafter, the control system package 3130 hangs up and an alarm is generated in the control system package 3130. The fact that the alarm is issued and its time are also recorded in the control system event recorder 3131.

  In the maintenance work, since an alarm is generated in the control system package 3130, the control system package 3130 is replaced with an equivalent spare package, and a quick recovery is performed. In this case, it is assumed that it takes time to arrange a spare package, and there is no spare package in the station building and cannot be replaced.

  Even in such a situation, since the transmission apparatus 3100 includes the communication unit 200 in the control system event recorder unit 3131, the maintenance person connects a LAN of a different system from the optical communication of the transmission apparatus 3100 to the LAN port of the communication unit 200. The log information in the nonvolatile memory 290b in the control system event recorder unit 3131 can be read from the station building or from a remote place.

  In the nonvolatile memory 290b, a record of command 2 reception from the monitoring control apparatus 1000 and a log in which an alarm in the control system package 3130 is issued immediately after that are recorded. By analyzing this log, the maintenance person can grasp that the command 1 which is a normal procedure is not received before the command 2. Then, it can be estimated that the control system package 3130 is hung up due to this.

  That is, the maintenance person can perform failure analysis even from a remote location without having to go to the site where the failure has occurred. Considering that the management of the station is within the management range of the client, who is usually a user, it is considered to be a great advantage that failure analysis can be performed promptly on the manufacturer side without bothering the client. It is done.

  If the log recorded in the non-volatile memory 290b is analyzed, if there is no other log indicating hardware failure, the cause can be determined when a command error is received, and the package can be restarted as a countermeasure. It is also possible to do this.

  In this way, in the past, spare packages were replaced and replaced, and if there was no spare package, it was impossible to respond until it was arranged and arrived. It becomes the transmission apparatus 3100 which can be made to become.

  In addition, even if a spare package is available and recovered by immediate replacement and replacement, the failure target package is returned to the manufacturer and analysis can be performed to identify the cause of the failure, not a hardware failure. This is preferable because it can be used as information for improving the quality of communication with the monitoring and control apparatus 1000.

  The configuration and operation processing of the transmission apparatuses 3100 and 100 described in each embodiment are typical examples, and the configuration and operation processing can be appropriately changed within the scope of the disclosed technical idea. Further, the transmission apparatuses 3100 and 100 do not need to have all the configurations shown in FIG. 1 and the like, and only the minimum configuration necessary for the operation processing described in each embodiment is selected as appropriate, and the selected configurations are combined. Those skilled in the art will readily understand that it can be used as a device. In addition, the present invention may be used for troubleshooting of various communication devices.

It is a figure which shows the transmission apparatus of this embodiment. It is a block diagram which shows notionally the structure of an event recorder part. It is a conceptual block diagram of the transmission apparatus explaining 1st embodiment. It is an operation | movement flowchart explaining the typical example of the recording process in a memory | storage part.

Explanation of symbols

  100..Transmission device, 110..Clock system package, 120..Main signal system package, 130..Control system package, 140..Monitoring control unit.

Claims (15)

In a transmission device implemented by combining multiple units packaged for each function,
A transmission device comprising: a non-volatile recording unit that sequentially records a log obtained by logging the status information of the unit so that the failure can be used for the cause analysis of the failure when the failure occurs in the transmission device .
However, the state information includes at least one of a mounting state of the unit, a state of a communication line connected to the transmission device, an alarm generation state of the unit or the transmission device, and a setting state of the unit or the transmission device. Information shall be included. The transmission apparatus according to claim 1,
A state change monitoring unit for detecting a change in the state information;
The non-volatile recording unit records the log when the state change monitoring unit detects a change in the state information obtained by the logging. The transmission apparatus according to claim 1 or 2,
The transmission is performed at predetermined intervals set in advance. The transmission apparatus according to any one of claims 1 to 3,
A transmission apparatus, comprising: a monitoring item setting unit to which setting information for arbitrarily selecting state information obtained by logging is input in advance. The transmission apparatus according to any one of claims 1 to 4,
A transmission device comprising: a communication unit that enables output of the log recorded by the nonvolatile recording unit to the outside of the transmission device. The transmission apparatus according to claim 2,
A communication unit that enables output of the log recorded by the nonvolatile recording unit to the outside of the transmission device;
When the state change monitoring unit detects a change in the state information, the communication unit notifies the change information in the state information and the log recorded in the nonvolatile recording unit. Transmission equipment. The transmission apparatus according to any one of claims 1 to 6,
A transmission device comprising: a voltage monitoring unit that detects a power supply voltage supplied to the transmission device, wherein the state information includes voltage information detected by the voltage monitoring unit. The transmission apparatus according to any one of claims 1 to 7,
A transmission device comprising: an impact monitoring unit that detects an impact applied to the transmission device; and the state information includes impact information detected by the impact monitoring unit. The transmission device according to claim 8, wherein
Even when the main power of the transmission device is turned off,
A transmission apparatus comprising: an auxiliary power supply that activates the impact monitoring unit; and the nonvolatile recording unit records the impact information. The transmission apparatus according to any one of claims 1 to 9,
A transmission device comprising a temperature monitoring unit for detecting a temperature of the transmission device, wherein the state information includes temperature information from the temperature monitoring unit. The transmission apparatus according to any one of claims 1 to 10,
A repetitive pattern detection unit for detecting duplication of change in the state information that occurs repeatedly;
The non-volatile recording unit has a reduced recording amount by not recording a log corresponding to an overlapping change in the state information. The transmission apparatus according to any one of claims 1 to 11,
The transmission apparatus is connected to a monitoring control apparatus that monitors a communication state of the transmission apparatus, and the nonvolatile recording unit records a communication log with the monitoring control apparatus. The transmission apparatus according to claim 12, wherein
The transmission device includes communication failure detection means for detecting a communication failure that has occurred in the transmission device,
The non-volatile recording unit records the communication log before and after the detection of the communication failure when the communication failure detection unit detects the communication failure. The transmission apparatus according to any one of claims 1 to 13,
Each of the units includes the non-volatile recording unit. In units that are packaged for each function and mounted on a transmission device,
The unit mounting state, the communication line state, the alarm generation state of the unit or the transmission device, the unit or the transmission device so that it can be used for the cause analysis of the failure when a failure occurs in the transmission device. A unit comprising: a non-volatile recording unit that sequentially records state information including at least one of setting states obtained from the unit by logging.

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