WO2021144950A1 - 通信装置及び温度監視方法 - Google Patents
通信装置及び温度監視方法 Download PDFInfo
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- WO2021144950A1 WO2021144950A1 PCT/JP2020/001474 JP2020001474W WO2021144950A1 WO 2021144950 A1 WO2021144950 A1 WO 2021144950A1 JP 2020001474 W JP2020001474 W JP 2020001474W WO 2021144950 A1 WO2021144950 A1 WO 2021144950A1
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- Prior art keywords
- temperature
- unit
- power supply
- communication
- onu
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0224—Process history based detection method, e.g. whereby history implies the availability of large amounts of data
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0224—Process history based detection method, e.g. whereby history implies the availability of large amounts of data
- G05B23/0227—Qualitative history assessment, whereby the type of data acted upon, e.g. waveforms, images or patterns, is not relevant, e.g. rule based assessment; if-then decisions
- G05B23/0235—Qualitative history assessment, whereby the type of data acted upon, e.g. waveforms, images or patterns, is not relevant, e.g. rule based assessment; if-then decisions based on a comparison with predetermined threshold or range, e.g. "classical methods", carried out during normal operation; threshold adaptation or choice; when or how to compare with the threshold
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/44—Star or tree networks
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2223/00—Indexing scheme associated with group G05B23/00
- G05B2223/02—Indirect monitoring, e.g. monitoring production to detect faults of a system
Definitions
- the present invention relates to a communication device and a temperature monitoring method.
- the PON Passive Optical Network
- the PON has an ONU (Optical Network Unit) installed in the user's house and an OLT (Optical Line Terminal) installed in the station building.
- the OLT is connected to a plurality of ONUs by an optical fiber network.
- FIG. 11 is a functional block diagram showing the configuration of the conventional ONU90.
- the ONU 90 is a 10G-EPON (10GigabitEthernet (registered trademark) Passive Optical Network) type ONU.
- the direction from the user's terminal device 91 to the OLT 92 is up, and the direction from the OLT 92 to the user's terminal device 91 is down.
- the ONU 90 includes a control unit 901, an optical transmission / reception unit 903, a power supply unit 904, and a cooler (FAN) 905.
- Solid arrows represent communication signals.
- the control unit 901 controls each unit of the ONU 90.
- the control unit 901 has a user network interface (UNI) 902.
- the UNI 902 transmits and receives data to and from the terminal device 91.
- the optical transmission / reception unit 903 converts the upstream electric signal input from the UNI 902 into an optical signal and outputs it to the OLT 92, converts the downstream optical signal input from the OLT 92 into an electric signal, and outputs the light signal to the UNI 902.
- the power supply unit 904 supplies the electric power received from the power source to each unit of the ONU 90.
- FAN905 cools the parts in ONU90.
- the parts mounted on the ONU 90 may generate heat when operating by receiving power supplied from the power supply unit 904.
- the size of the housing was increased to dissipate heat, and FAN905 was mounted to cool the parts.
- there is a temperature abnormality alarm device that issues an alarm for a temperature abnormality see, for example, Non-Patent Document 1).
- the ONU may become hot due to the heat generated by the mounted parts. It is conceivable to detect that the ONU has become hot by using the temperature abnormality alarm device. However, the temperature alarm device does not eliminate the temperature abnormality of the communication device such as the ONU. Conventionally, measures have been taken to increase the size of the device in order to cool the ONU. It is also possible to take measures to mount the FAN as shown in FIG. However, if such measures are taken, the size of the device will increase. In some cases, it was difficult to secure a place for installing a large-sized ONU in the user's home.
- an object of the present invention is to provide a communication device and a temperature monitoring method capable of eliminating a temperature abnormality generated in the communication device.
- One aspect of the present invention is a communication unit that communicates with another device, a power supply unit that supplies electric power to parts mounted on the own device, and a temperature that monitors the temperature of the own device and detects the presence or absence of a temperature abnormality.
- a communication device including a monitoring unit and a control unit that performs a power supply stop processing for stopping the supply of electric power from the power supply unit to at least a part of the parts when the temperature monitoring unit detects a temperature abnormality. be.
- One aspect of the present invention is a communication unit that communicates with another device, a power supply unit that supplies electric power to parts mounted on the own device, and a temperature that monitors the temperature of the own device and detects the presence or absence of a temperature abnormality. It is a communication device including a monitoring unit and a control unit that stops or reduces communication by the communication unit when the temperature monitoring unit detects a temperature abnormality.
- One aspect of the present invention is a temperature monitoring method in a communication device, which includes a communication step in which the communication unit communicates with another device, and a temperature monitoring step in which the temperature of the own device is monitored to detect the presence or absence of a temperature abnormality.
- a power supply stop process for stopping the supply of power to at least a part of the parts from the power supply unit that supplies power to the parts mounted on the communication device is performed. It has a control step to perform.
- One aspect of the present invention is a temperature monitoring method in a communication device, which includes a communication step in which the communication unit communicates with another device, and a temperature monitoring step in which the temperature of the own device is monitored to detect the presence or absence of a temperature abnormality.
- FIG. 1 is a diagram showing a configuration example of the communication system 1 according to the first embodiment.
- the communication system 1 is, for example, a PON system.
- Communication system 1 includes an OLT 10 and a plurality of ONU 20s.
- the OLT 10 is installed in the station building, and the ONU 20 is installed in the user's home.
- the ONU 20 is connected to the user's terminal device 30.
- one terminal device 30 is connected to each ONU 20, but the number of terminal devices 30 connected to each ONU 20 is arbitrary.
- the terminal device 30 is, for example, a personal computer (PC) or a home gateway (HGW).
- PC personal computer
- HGW home gateway
- the optical splitter 40 is connected to the OLT 10 via the transmission line 50, and is connected to each ONU 20 via the transmission line 60.
- the transmission line 50 and the transmission line 60 are, for example, optical fibers.
- the monitoring and control system 80 is connected to the OLT 10 and the ONU 20.
- the monitoring and control system 80 monitors and controls the communication system 1. It is possible to remotely connect and control the OLT 10 and ONU 20 by a monitoring control system 80 or a remote control terminal (not shown).
- the monitoring control system 80 may be remotely connected to the ONU 20 via the OLT 10.
- the OLT 10 multiplexes the downlink signals of light transmitted to the plurality of ONUs 20 and outputs them to the transmission line 50.
- the optical splitter 40 distributes and transfers the downlink signal transmitted through the transmission line 50 to the plurality of transmission lines 60.
- Each ONU 20 receives the downlink signal transmitted through the transmission line 60, converts it into an electric signal, and outputs it to the terminal device 30. Further, each ONU 20 receives an uplink signal from the terminal device 30, converts the received uplink signal from an electric signal to an optical signal, and outputs the received uplink signal to the transmission line 60.
- the optical splitter 40 multiplexes the uplink signals transmitted through each of the plurality of transmission lines 60 connected to each ONU 20 and outputs them to the transmission line 50.
- the OLT 10 inputs a signal in which the uplink signals transmitted from each ONU 20 are multiplexed from the transmission line 50.
- the OLT 10 allocates a band to transmit an uplink signal to each ONU 20.
- the ONU 20 transmits an uplink signal using the band assigned to the OLT 10.
- FIG. 2 is a diagram showing a configuration example of ONU 20.
- the ONU 20 is, for example, a 10G-EPON type optical subscriber line termination device.
- the ONU 20 includes a control unit 21, an optical transmission / reception unit 22, and a power supply unit 23.
- the ONU 20 may or may not include a cooler (FAN) 24 for cooling the components in the ONU 20.
- FAN cooler
- the ONU 20 will be described as not including the FAN 24.
- the solid line arrow represents the communication signal
- the broken line arrow represents the control signal.
- the control unit 21 controls each unit of the ONU 20.
- the control unit 21 includes a user network interface (UNI) 211, a temperature monitoring unit 212, and a power supply control unit 213.
- the temperature monitoring unit 212 may be provided inside or outside the control unit 21.
- UNI211 has the same function as UNI902 shown in FIG.
- the UNI 211 transmits and receives data to and from the terminal device 30.
- the temperature monitoring unit 212 and the power supply control unit 213 are in a state where power is always supplied from the power supply unit 23.
- power off means stopping the supply of power from the power supply unit 23.
- the temperature monitoring unit 212 constantly acquires the temperature information inside the ONU 20.
- the temperature monitoring unit 212 detects that the mounted parts have become hot when the acquired temperature information satisfies a predetermined detection condition. ..
- one or more temperature sensors are installed in the ONU 20.
- the temperature monitoring unit 212 acquires temperature information indicating a measured value of the temperature by each temperature sensor.
- the temperature monitoring unit 212 detects that one of the mounted components has become hot by comparing the temperature measured by the temperature sensor with the threshold value.
- the temperature monitoring unit 212 approximates the mounted parts that have become hot based on the positions of the temperature sensors and the temperature measured by those temperature sensors. The position can be determined. Further, by attaching a temperature sensor to each mounted component, the temperature monitoring unit 212 can identify which mounted component has become hot. In the following, the mounted parts that have become hot will be referred to as heat-generating parts.
- the power supply control unit 213 When the temperature monitoring unit 212 detects a temperature abnormality, the power supply control unit 213 performs a power supply stop process for controlling the power supply from the power supply unit 23 to the heat generating component.
- the power supply control unit 213 turns off the power as a power supply stop process.
- the power supply control unit 213 may control to stop the power supply to the mounted component at the position and the peripheral position as the power supply stop process.
- the power supply control unit 213 may control to stop only the supply of power to the heat-generating component as the power supply stop processing. In the following, stopping the supply of electric power to the mounted parts at the approximate position of the heat-generating component and its peripheral positions, or stopping only the supply of electric power to the heat-generating component is described as a specific component power-down.
- the power supply control unit 213 automatically turns on the power when the temperature monitoring unit 212 detects that the temperature state inside the ONU 20 has sufficiently decreased after the power supply to the heat generating component is stopped by the power supply stop processing.
- the automatic power-on is to perform a power supply restart process for resuming the power supply to the mounted components whose power supply has been stopped by the power supply stop process, and to instruct the ONU 20 to restart.
- the power supply control unit 213 automatically restarts the supply of electric power from the power supply unit 23 to the heat generating component. Further, when the ONU 20 is restarted, the initial setting process of the communication between the ONU 20 and the OLT 10 is performed.
- the power supply control unit 213 determines whether or not the power supply restart processing is possible based on preset conditions. For example, the power supply control unit 213 automatically restarts the power supply if the number of detections is less than the specified number even when the heat generation of the mounted component is repeatedly detected. However, if the number of detections is equal to or greater than the specified number of times, it is considered that the installation environment needs to be improved, so that the power supply control unit 213 does not perform the automatic power supply restart processing. In this case, the power supply worker restarts the power supply unit 23 after confirming the ONU 20 to restart the power supply.
- the optical transmission / reception unit 22 has the same function as the optical transmission / reception unit 903 shown in FIG.
- the optical transmission / reception unit 22 converts the upstream electric signal input from the UNI 211 into an optical signal and outputs it to the OLT 10, converts the downstream optical signal input from the OLT 10 into an electric signal, and outputs the light signal to the UNI 211.
- the optical transmission / reception unit 22 transmits an uplink signal using the band allocated by the OLT 10.
- the power supply unit 23 supplies the electric power received from the power supply to each mounted component of the ONU 20 by using the AC adapter.
- the mounted components to which the power supply unit 23 supplies electric power include those not shown in FIG.
- FIG. 3 is a diagram showing an outline of the operation of the ONU 20.
- the power supply control unit 213 of the ONU 20 performs a power-on process when the power of the power supply unit 23 is first turned on.
- the power supply control unit 213 performs a power-off process when a temperature abnormality due to a high temperature of the mounted component is detected.
- the power supply control unit 213 determines that the temperature of the ONU 20 has dropped and the abnormal temperature state has recovered, the power supply control unit 213 performs a power-on process.
- the power supply control unit 213 autonomously restores the power supply from the power supply unit 23 after the temperature monitoring unit 212 determines that the temperature of the heat generating component has sufficiently dropped. Further, the power supply control unit 213 automatically counts the number of times the power supply is restored, and if the power supply exceeds the specified upper limit, the power supply is left unrecovered.
- FIG. 4 is a diagram showing an outline of the operation of the ONU 20 when the power is not automatically restored after the power is turned off due to the detection of a temperature abnormality.
- the ONU 20 performs a power-on process when the power is first turned on.
- the power supply control unit 213 performs a power-off process when a temperature abnormality due to a high temperature of the mounted component is detected.
- the user or the maintenance worker confirms the status of the ONU 20 to improve the environment in which the ONU 20 becomes hot, and then manually connects and disconnects the AC adapter of the power supply unit 23. As a result, the power supply unit 23 is turned on, and the ONU 20 is restarted.
- the specific component may be powered down instead of turning off the power.
- the ONU when it is determined that the ONU in use is in an abnormal temperature state, the ONU is automatically turned off or the specific component is powered down to disable the ONU.
- the ONU installed in the user's home is prevented from becoming too hot, and the user can use the ONU safely.
- it can be expected to have the effect of promoting improvement of the ONU installation environment.
- the ONU 20 may perform the transition of the power supply state shown in FIG. 4 after repeating the transition of the power supply state shown in FIG. 3 a predetermined number of times.
- 5 and 6 are flow charts showing the operation of the ONU 20. Using this flow chart, the operation in which the ONU 20 autonomously takes measures against temperature rise by monitoring the temperature of the heat-generating component and powering down the heat-generating component will be described.
- the power supply control unit 213 stores information on whether the temperature abnormality automatic power-on setting is valid or invalid in advance. When the temperature abnormality automatic power-on setting is valid, it means that the temperature abnormality automatic power-on is performed, and when the temperature abnormality automatic power-on setting is invalid, it means that the temperature abnormality automatic power-on is not performed. Temperature abnormality automatic power-on means that when a temperature abnormality is detected in the ONU 20, the power supply control unit 213 automatically turns off the power or powers down a specific component, and then automatically turns on the power when the temperature abnormality recovers. be. The power supply control unit 213 further stores the set value Th. The set value Th represents the number of times that the automatic power-on for abnormal temperature is allowed. The temperature abnormality automatic power-on setting and the set value Th can be set in the ONU 20 by using the monitoring control system 80 or the maintenance terminal.
- the power supply control unit 213 sets the initial value 0 to the counter value N (step S105).
- the counter value N indicates the number of times the temperature abnormality automatic power is turned on.
- the temperature monitoring unit 212 monitors the temperature inside the device (step S110).
- the temperature monitoring unit 212 determines whether or not a temperature abnormality has been detected by monitoring (step 115). When the temperature monitoring unit 212 determines that the temperature abnormality is not detected (step S115: NO), the temperature monitoring unit 212 repeats the process of step S110.
- the temperature monitoring unit 212 determines that the temperature abnormality has been detected (step S115: YES)
- the temperature monitoring unit 212 notifies the power supply control unit 213 of the temperature abnormality.
- the power supply control unit 213 determines whether or not the temperature abnormality automatic power-on setting is valid (step S120). When the power supply control unit 213 determines that the temperature abnormality automatic power-on setting is valid (step S120: YES), the power supply control unit 213 determines whether or not the counter value N is equal to or greater than the set value Th (step 135). When the power supply control unit 213 determines that the counter value N is not equal to or higher than the set value Th (step S125: NO), the power supply control unit 213 performs the process of step S130.
- the power supply control unit 213 outputs the temperature abnormality notification and the power off notification to the external device a predetermined number of times (step S130).
- the external device is, for example, the monitoring control system 80, but may be the OLT 10.
- the power supply control unit 213 turns off the power or powers down the specific component (step S135). Specific parts Parts whose power supply is stopped due to power-down include heat-generating parts.
- the LED (Light Emitting Diode) lamp included in the ONU 20 is turned off because the power supply is stopped.
- the temperature monitoring unit 212 monitors the temperature inside the device (step S140).
- the temperature monitoring unit 212 determines whether or not the temperature abnormality has recovered by monitoring (step S145).
- the temperature monitoring unit 212 repeats the process of step S140.
- the temperature monitoring unit 212 determines that the temperature abnormality has recovered (step S145: YES)
- the temperature monitoring unit 212 notifies the power supply control unit 213 of the recovery of the temperature abnormality.
- the power supply control unit 213 Upon receiving the notification of recovery from the abnormal temperature, the power supply control unit 213 starts automatic power-on (step S150).
- the power supply control unit 213 resumes the supply of power from the power supply unit 23 to the parts for which the power supply has been stopped.
- the control unit 21 restarts the ONU 20 when the power supply to each component is resumed (step S155).
- the power supply control unit 213 adds 1 to the counter value N (step S160).
- the power supply control unit 213 transmits the temperature abnormality recovery notification to the external device a predetermined number of times (step S165).
- the control unit 21 returns to the process of step S110.
- step S120 determines in step S120 that the temperature abnormality automatic power-on setting is invalid (step S120: NO), or when it determines in step S125 that the counter value N is equal to or greater than the set value Th. (Step S125: YES), the process of step S205 of FIG. 6 is performed.
- the power supply control unit 213 outputs the temperature abnormality notification and the failure notification to the external device a predetermined number of times (step S205).
- step S210 performs an optical shutdown process of the optical transmission / reception unit 22
- the power supply control unit 213 turns off the power or powers down the specific component (step S215).
- Specific parts Parts whose power supply is stopped due to power-down include heat-generating parts.
- the LED lamp (not shown) included in the ONU 20 is turned off because the power supply is stopped. Since the light has been shut down, it is not possible to send a power off notification.
- a maintenance worker or a user manually turns on the power supply unit 23 of the ONU 20 by inserting and removing the AC adapter of the ONU 20 (step S220). After manually turning on the power, the control unit 21 restarts the ONU 20 (step S225). After restarting, the power supply control unit 213 recovers the power failure to each component and supplies the power from the power supply unit 23 to each component.
- the temperature monitoring unit 212 monitors the temperature inside the device (step S230).
- the temperature monitoring unit 212 determines whether or not the temperature abnormality has recovered by monitoring (step 235).
- the temperature monitoring unit 212 repeats the process of step S230.
- the temperature monitoring unit 212 transmits the temperature abnormality recovery notification to the external device a predetermined number of times (step S240).
- the control unit 21 performs the process from step S105 in FIG.
- FIG. 7 is a diagram showing a reset process of the counter value N in the power supply control unit 213.
- the power supply control unit 213 performs the process shown in FIG. 7 in step S110 of FIG.
- the power supply control unit 213 determines whether or not a certain time has elapsed since the restart (step S305).
- step S305 determines whether or not the temperature abnormality automatic power-on setting has been changed (step S310).
- step S310 determines whether or not the temperature abnormality automatic power-on setting has not been changed.
- step S315 determines whether or not the set value Th has been changed.
- step S315: NO the power supply control unit 213 repeats the process from step S305.
- the power supply control unit 213 determines that a certain time has passed since the restart (step S305: YES), determines that the temperature abnormality automatic power-on setting has been changed (step S310: YES), or the set value. When it is determined that Th has been changed (step S315: YES), the process of step S320 is performed. That is, the power supply control unit 213 sets the counter value N to 0, and repeats the process from step S305.
- the ONU when the ONU is hot, the heat generating parts and the housing are cooled from the outside by FAN or the like. Even so, when the ONU becomes hot, the user or maintenance worker turns off the power triggered by a power failure.
- the ONU of the present embodiment eliminates the cause of heat generation itself by stopping the power supply to the heat generating component depending on the conditions, and autonomously restores the power supply after the temperature of the heat generating component is sufficiently lowered.
- the ONU is controlled so that the autonomous recovery from the abnormal temperature state is repeated a set number of times, and when the set number of times is exceeded, the power is manually turned on without the autonomous recovery.
- the ONU can be restarted if the temperature drops, instead of a one-time measure like a thermal fuse.
- the ONU can avoid the danger that may occur due to the high temperature against the temperature abnormality for a certain period of time.
- the ONU operates autonomously without bothering the maintenance worker, which leads to a reduction in maintenance operation.
- the safety is improved because the ONU needs to be confirmed by a person without restarting.
- the ONU of the present embodiment is a device on the premise that the temperature does not usually rise. However, even if it is expected that the temperature will be high at the time of abnormality due to the usage environment or the like, safety measures can be taken with an inexpensive configuration without FAN. In this embodiment, it is not positively excluded that the ONU is provided with a cooling device such as a FAN.
- the ONU when the ONU detects a temperature abnormality even during communication, the ONU stops the power supply of the mounted components, so that the communication is interrupted. In the present embodiment, by lowering the communication rate, the processing load is reduced while maintaining the communication, and the heat generation amount of the ONU is reduced.
- the communication system of the present embodiment has the same configuration as the communication system 1 of the first embodiment shown in FIG. However, the communication system of the present embodiment includes the ONU 20a shown in FIG. 9, which will be described later, instead of the ONU 20 shown in FIG.
- FIG. 8 is a diagram showing a configuration example of the OLT 10. In FIG. 8, only the functional blocks related to the present embodiment are extracted and shown.
- the OLT 10 includes an optical transmission / reception unit 11, an upper communication unit 12, and a control unit 13.
- the optical transmission / reception unit 11 converts the upstream optical signal received from the ONU 20a into an electric signal and outputs it to the upper communication unit 12. Further, the optical transmission / reception unit 11 converts the downlink electric signal input from the upper communication unit 12 into an optical signal and outputs it to the ONU 20a.
- the upper communication unit 12 transmits / receives data to / from the upper network.
- the upper communication unit 12 outputs the upstream electric signal output by the optical transmission / reception unit 11 to the upper network, and outputs the downlink electric signal received from the upper network to the optical transmission / reception unit 11.
- the control unit 13 controls each unit.
- the control unit 13 includes a band allocation unit 131.
- the band allocation unit 131 allocates a band to each ONU 20a.
- the control unit 13 notifies the ONU 20a of the allocated band by an optical signal transmitted from the optical transmission / reception unit 11.
- FIG. 9 is a diagram showing a configuration example of ONU 20a.
- the same parts as those of the ONU 20 according to the first embodiment shown in FIG. 2 are designated by the same reference numerals, and the description thereof will be omitted.
- the difference between the ONU 20a shown in FIG. 9 and the ONU 20 shown in FIG. 2 is that the ONU 20a is provided in place of the control unit 21.
- the difference between the control unit 21a and the control unit 21 is that the control unit 21a includes a notification unit 214 instead of the power supply control unit 213.
- the control unit 21a stops or reduces the communication between the terminal device 30 by the UNI 211 and the communication between the OLT 10 by the optical transmission / reception unit 22.
- the notification unit 214 notifies the OLT 10 of the detection of the temperature abnormality.
- the communication of ONU20a can be reduced as follows.
- the temperature monitoring unit 212 of the ONU 20a detects a temperature abnormality
- the temperature monitoring unit 212 notifies the notification unit 214.
- the notification unit 214 transmits a temperature abnormality notification from the optical transmission / reception unit 22 by an uplink signal.
- the optical transmission / reception unit 11 of the OLT 10 outputs the received temperature abnormality notification to the control unit 13.
- the band allocation unit 131 of the control unit 13 does not allocate the band to the ONU 20a of the transmission source of the temperature abnormality notification for a certain period of time, or thins out the period of band allocation.
- control unit 21a of the ONU 20a controls so as to stop or reduce the transmission of uplink communication from the optical transmission / reception unit 22 for a certain period of time.
- control unit 13 of the OLT 10 may stop or thin out the downlink signal to the ONU 20a, which is the transmission source of the temperature abnormality notification. In this case, the control unit 13 may discard the downlink signal, or may transmit it after buffering it for a predetermined time.
- the control unit 21a of the ONU 20a controls the power supply unit 23 so as to turn off the power when the temperature abnormality is not recovered for a predetermined time or when the temperature abnormality and the recovery of the temperature abnormality are repeated a predetermined time. May be good.
- the ONU has been described as an example, but a communication device other than the ONU may be used.
- FIG. 10 is a diagram showing a hardware configuration example of the ONU 20.
- the ONU 20 includes a processor 71, a storage unit 72, a communication interface 73, and a power supply device 74.
- the processor 71 is a central processing unit that performs calculations and controls.
- the processor 71 is, for example, a CPU (central processing unit).
- the storage unit 72 is a computer-readable recording medium.
- the storage unit 72 is, for example, various memories or storage devices.
- the storage unit 72 stores a program or the like for executing the processing of the control unit 21.
- the processor 71 realizes the functions of the control unit 21 including the temperature monitoring unit 212 and the power supply control unit 213 by reading the program from the storage unit 72 and executing the program.
- the storage unit 72 also has a work area for the processor 71 to execute various programs. All or part of the functions of the control unit 21 may be realized by using hardware such as ASIC (Application Specific Integrated Circuit), PLD (Programmable Logic Device), and FPGA (Field Programmable Gate Array).
- the communication interface 73 communicates with another device.
- the communication interface 73 corresponds to the UNI 211 and the optical transmission / reception unit 22.
- the power supply device 74 supplies the power received from the power supply to the processor 71, the storage unit 72, and the communication interface 73.
- the power supply device 74 corresponds to the power supply unit 23.
- the hardware configuration of the ONU 20a is the same as the hardware configuration of the ONU 20 shown in FIG. However, in the case of the ONU 20a, the storage unit 72 stores a program or the like for executing the process of the control unit 21a.
- the processor 71 realizes the functions of the control unit 21a including the temperature monitoring unit 212 and the notification unit 214 by reading the program from the storage unit 72 and executing the program.
- the hardware configuration of the OLT 10 is the same as the hardware configuration of the ONU 20 shown in FIG. However, in the case of the OLT 10, the storage unit 72 stores a program or the like for executing the processing of the control unit 13.
- the processor 71 realizes the function of the control unit 13 including the band allocation unit 131 by reading the program from the storage unit 72 and executing the program.
- the communication interface 73 corresponds to the optical transmission / reception unit 11 and the upper communication unit 12.
- the communication device includes a communication unit, a power supply unit, a temperature monitoring unit, and a control unit.
- the communication device is, for example, ONU20, 20a of the embodiment.
- the communication unit communicates with other devices.
- the communication unit is, for example, the UNI 211 and the optical transmission / reception unit 22 of the embodiment.
- the power supply unit supplies power to the parts mounted on the own device.
- the temperature monitoring unit monitors the temperature inside its own device and detects the presence or absence of temperature abnormalities. When the temperature monitoring unit detects a temperature abnormality, the control unit performs a power supply stop processing for stopping the power supply from the power supply unit to at least a part of the parts in its own measures.
- the control unit After the power supply stop processing, the control unit performs the power supply restart processing to restart the power supply to the parts whose power supply has been stopped by the power supply stop processing when the temperature monitoring unit detects the recovery of the temperature abnormality. ..
- the control unit performs the power supply restart process up to a predetermined number of times, and does not perform the power supply restart process when the number of times exceeds the predetermined number of times.
- control unit may stop or reduce the communication by the communication unit when the temperature monitoring unit detects a temperature abnormality.
- the control unit may transmit a temperature abnormality notification from the communication unit and stop or reduce communication with another device that has received the temperature abnormality notification.
- another device to which the temperature abnormality is notified is the OLT 10.
- the communication device is an ONU, the inside of the house communicates by an electric signal, and the PON side communicates by an optical signal has been described as an example, but the present invention is not limited to this.
- the communication device may be an HGW (home gateway) that communicates wirelessly in the house and by optical signals on the PON side.
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Abstract
Description
図1は、第1の実施形態による通信システム1の構成例を示す図である。通信システム1は、例えば、PONシステムである。通信システム1は、OLT10及び複数のONU20を備える。例えば、OLT10は局舎に設置され、ONU20は、ユーザ宅内に設置される。ONU20は、ユーザの端末装置30と接続される。図1では、各ONU20に1台の端末装置30が接続されているが、各ONU20に接続される端末装置30の台数は任意である。端末装置30は、例えば、パーソナルコンピュータ(PC)や、ホームゲートウェイ(HGW)である。
第1の実施形態では、ONUは、通信中であっても温度異常を検出した場合は、搭載部品の電力供給を停止するため、通信が中断する。本実施形態では、通信レートを下げることによって、通信を維持したままで処理の負荷を軽減し、ONUの発熱量を下げる。本実施形態の通信システムは、図1に示す第1の実施形態の通信システム1と同様の構成である。ただし、本実施形態の通信システムは、図2に示すONU20に代えて、後述する図9に示すONU20aを備える。
Claims (8)
- 他の装置と通信する通信部と、
自装置に搭載されている部品に電力を供給する電源部と、
自装置の温度を監視して温度異常の有無を検出する温度監視部と、
前記温度監視部が温度異常を検出した場合に、前記電源部から少なくとも一部の前記部品への電力の供給を停止する電力供給停止処理を行う制御部と、
を備える通信装置。 - 前記制御部は、前記電力供給停止処理の後に、前記温度監視部が温度異常の回復を検出した場合に、電力の供給を停止した前記部品への電力供給を再開する電力供給再開処理を行う、
請求項1に記載の通信装置。 - 前記制御部は、前記電力供給再開処理を所定回数まで行う、
請求項2に記載の通信装置。 - 前記制御部は、前記電力供給停止処理において少なくとも温度異常が発生した部品への電力供給を停止する、
請求項1から請求項3のいずれか一項に記載の通信装置。 - 他の装置と通信する通信部と、
自装置に搭載されている部品に電力を供給する電源部と、
自装置の温度を監視して温度異常の有無を検出する温度監視部と、
前記温度監視部が温度異常を検出した場合に前記通信部による通信を停止又は低減する制御部と、
を備える通信装置。 - 前記制御部は、前記温度監視部が温度異常を検出した場合に前記通信部から温度異常の通知を送信し、前記温度異常の通知を受信した他の装置との間の通信を停止又は低減する、
請求項5に記載の通信装置。 - 通信装置における温度監視方法であって、
通信部が、他の装置と通信する通信ステップと、
自装置の温度を監視して温度異常の有無を検出する温度監視ステップと、
前記温度監視ステップにおいて温度異常を検出した場合に、前記通信装置に搭載されている部品へ電力を供給する電源部から少なくとも一部の前記部品への電力の供給を停止する電力供給停止処理を行う制御ステップと、
を有する温度監視方法。 - 通信装置における温度監視方法であって、
通信部が、他の装置と通信する通信ステップと、
自装置の温度を監視して温度異常の有無を検出する温度監視ステップと、
前記温度監視ステップにおいて温度異常を検出した場合に、前記通信部による通信を停止又は低減する制御ステップと、
を有する温度監視方法。
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| JP2021570593A JP7372559B2 (ja) | 2020-01-17 | 2020-01-17 | 通信装置及び温度監視方法 |
| US17/792,293 US12353199B2 (en) | 2020-01-17 | 2020-01-17 | Communication apparatus and temperature monitoring method |
| PCT/JP2020/001474 WO2021144950A1 (ja) | 2020-01-17 | 2020-01-17 | 通信装置及び温度監視方法 |
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| JP3384522B2 (ja) * | 1996-07-30 | 2003-03-10 | 矢崎総業株式会社 | スイッチング装置 |
| US6108183A (en) * | 1998-10-01 | 2000-08-22 | Marconi Communications, Inc. | Current limiter |
| JP4762044B2 (ja) * | 2006-04-27 | 2011-08-31 | 矢崎総業株式会社 | 負荷回路の保護装置 |
| JP7103164B2 (ja) * | 2018-10-31 | 2022-07-20 | オムロン株式会社 | 温度異常検知システム、温度異常検知方法、およびプログラム |
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| JP2003273795A (ja) * | 2002-03-15 | 2003-09-26 | Hitachi Kokusai Electric Inc | 無線基地局装置 |
| JP2005211395A (ja) * | 2004-01-30 | 2005-08-11 | Matsushita Electric Ind Co Ltd | 洗濯乾燥機 |
| JP2011109526A (ja) * | 2009-11-19 | 2011-06-02 | Nec Corp | 無線通信端末、並びにこれに用いる通信制御方法及びプログラム |
| JP2018026746A (ja) * | 2016-08-12 | 2018-02-15 | 三菱電機株式会社 | 加入者線終端装置、制御方法及び光通信システム |
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| JP2024047215A (ja) * | 2022-09-26 | 2024-04-05 | 株式会社デンソー | 制御装置 |
| JP7816055B2 (ja) | 2022-09-26 | 2026-02-18 | 株式会社デンソー | 制御装置 |
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| JPWO2021144950A1 (ja) | 2021-07-22 |
| US12353199B2 (en) | 2025-07-08 |
| JP7372559B2 (ja) | 2023-11-01 |
| US20230109949A1 (en) | 2023-04-13 |
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