JP2020173743A - Fault monitoring and restoration system, method thereof, and program thereof - Google Patents

Abstract

To provide a fault monitoring and restoration system, a fault monitoring and restoration method, and a fault monitoring and restoration program that can detect a fault that has occurred in application software built into a device and safely recover from the fault.SOLUTION: In application monitoring means, a heartbeat stop instruction unit 132 detects an abnormality in a video app 140 to stop a heartbeat signal. A shutdown execution unit 133 detects the stop of the heartbeat signal to terminate a server device 100. A power supply control device 300 causes a power supply unit 323 to shut off power supplied to the server device 100 upon detecting the termination of the server device 100, and to supply power again. A magic packet transmission unit 324 activates the server device 100 from a network 400 on which the heartbeat signal is communicated.SELECTED DRAWING: Figure 1

Description

The present invention relates to a failure monitoring / recovery system, a failure monitoring / recovery method, and a failure monitoring / recovery program, and particularly includes a server device on which an application operates and an interlocking device that operates based on information provided by the server device. The present invention relates to a failure monitoring / recovery system for confirming the operation status of the server device by receiving a heartbeat signal for checking the operation of the server device, a failure monitoring / recovery method, and a failure monitoring / recovery program.

Traditionally, services using the Internet often require 24-hour operation. For example, a web server that distributes websites to the Internet, a business server that manages business data within a company, a mail server that sends and receives emails, etc., these servers need to constantly provide services for business such as the company. There is.

In addition, a surveillance camera system that transmits video signals captured for the purpose of crime prevention and disaster prevention, and digital that displays advertisements such as images and characters on displays and projectors installed outdoors, in stores, and in public places. Signage systems are also services that need to be constantly provided.

As described above, for services that need to be continuously provided, it is necessary to continuously monitor from the outside whether servers, computers, network systems, etc. are operating normally.

Therefore, a method of monitoring a server, a computer, a network system, etc., and notifying an administrator of an abnormality when a failure occurs, or a method of recovering the system, etc. are known (for example, Patent Document 1). reference).

The communication failure recovery method disclosed in Patent Document 1 is for detecting an abnormality of two synchronous devices, without providing an abnormality detecting means for monitoring the two devices, and is either a transmitting side device or a receiving side device. This is a communication failure recovery method that can restore normal communication even if a failure occurs.

As a specific example, a communication failure recovery method when a failure occurs in a signal transmitted from one device 10 to the other device 40 among two synchronized devices and the device 40 detects the failure. Will be explained.

First, line synchronization is established between the device 10 and the device 40. Then, the device 10 transmits a signal including the life and death monitoring signal to the device 40. In response to the signal, the device 40 transmits a signal including the life and death monitoring signal to the device 10. In this way, communication is being performed between the opposite device 10 and the device 40.

Then, the device 10 transmits the next signal including the life-and-death monitoring signal to the device 40, but at this time, some trouble occurs in either the device 10 or the device 40, and the device 40 monitors the life-and-death from the received signal. Suppose the signal could not be detected.

The device 40, which could not detect the life-and-death monitoring signal from the signal transmitted by the device 10, transmits a signal including the abnormality detection signal to the device 10, and the device 40 restarts the device 40 by itself. Then, the device 10 that detects the abnormality detection signal from the signal transmitted by the device 40 restarts the device 10 by itself.

After that, line synchronization is reestablished between the restarted device 10 and the device 40, and the device 10 transmits a signal including a life-and-death monitoring signal to the device 40, and in response to the signal, the device 40 receives the signal. The operation of transmitting a signal including the life-and-death monitoring signal to the device 10 is repeated.

As described above, in the communication failure recovery method disclosed in Patent Document 1, the device 10 that could not detect the alive monitoring signal from the received signal restarts itself after transmitting the signal including the abnormality detection signal to the device 40. However, since the device 40 restarts itself when an abnormality detection signal is detected from the received signal, the device 40 on the transmitting side does not provide an abnormality detection means for monitoring both of the two devices in synchronization. Normal communication can be restored regardless of whether the receiving device fails.

Japanese Unexamined Patent Publication No. 2017-18395

The communication failure recovery method disclosed in Patent Document 1 determines that a failure has occurred in one device when the life-and-death monitoring signal transmitted from one device cannot be detected. The operating status is monitored for each device.

Specifically, in the case of a computer, a life-and-death monitoring signal is a mechanism for transmitting data and signals at regular intervals in order to notify each other that devices connected to the network are operating normally. The heartbeat is known.

If this heartbeat setting is enabled on the computer, signals can be communicated between devices connected to the network at predetermined fixed intervals. Therefore, if signal communication is possible at regular intervals, it can be confirmed that the other device is operating normally, and if the heartbeat is not detected even after a certain period of time, the device has failed. It can be determined that it has occurred.

However, failures are not limited to devices. For example, if only the application software installed on the computer fails and the operating system installed on the computer is normal, then the operating system is operating normally and the computer successfully signals a heartbeat. I can send it.

Therefore, the device connected to the network receives the heartbeat signal even though the application software installed on the computer has an error, so this computer is operating normally. You will have to judge.

As described above, if the presence or absence of a failure is determined based only on the life-and-death monitoring signal such as the heartbeat signal emitted by the computer, there is a problem that the failure occurring in the application software installed on the computer cannot be detected.

As described above, when a failure occurs in the application software installed on the computer, a method of restoring the normal operation of the application software by restarting the application software can be considered. However, there are cases where the application software cannot be restarted easily.

For example, in a display installed outdoors, in a store, in a public place, or in a digital signage system that displays advertisements such as images and characters using a projector, it is possible to play video and audio files such as images on a computer. Media players are used as application software that can be used.

When a failure occurs in this media player, there is a problem that a moving image such as a video is displayed on a display or a projector installed outdoors, in a store, in a public place, or the like in a stopped state.

Furthermore, if this media player fails and only the media player is easily stopped and restarted, the desktop screen on the computer will be displayed on the display, etc., and unnecessary files and personal information will be public. There was a risk that it would be released at the venue.

The present invention has been made in view of these points, and is a failure monitoring / recovery system, a failure monitoring / recovery method, which can detect a failure occurring in application software embedded in a device and safely recover from the failure. And the purpose is to provide a disaster monitoring and recovery program.

In the present invention, in order to solve the above problem, a server device on which an application operates and an interlocking device that operates based on information provided by the server device are provided, and a heartbeat signal for confirming the operation of the server device is provided. In a failure recovery system that receives and confirms the operating status of the server device, a heartbeat stop means that detects an abnormality in the application and stops the heartbeat signal, and the server that detects the stop of the heartbeat signal. An application monitoring means including a server device termination means for terminating the device, a server power control means for detecting the termination of the server device and controlling interruption and resupply of power supplied to the server device, and the heartbeat signal. Provided is a failure recovery system including a power supply control means including a server device remote start means for starting the server device from the network on which the communication is performed.

As a result, in the application monitoring means, the heartbeat stop means detects the abnormality of the application and stops the heartbeat signal, and the server device termination means detects the stop of the heartbeat signal and terminates the server device to supply power. In the control means, the server power control means detects the end of the server device, cuts off the power supplied to the server device, and resupplys the power, and the server device remote start means is a server from the network where the heartbeat signal is communicated. Start the device.

Further, in the present invention, the server includes a server device on which the application operates and an interlocking device that operates based on the information provided by the server device, and receives a heartbeat signal confirming the operation of the server device to receive the server. In the failure recovery method for checking the operating status of the device, the application monitoring means, the heartbeat stopping means detects an abnormality in the application and the heartbeat signal is stopped, and the server device termination means is the heartbeat. A step of detecting a signal stop and terminating the server device is provided, and the power supply control means, the server power control means, detects the end of the server device, and shuts off and resupplys the power supplied to the server device. The failure recovery method is provided, which comprises a step of controlling the server device and a step of starting the server device remotely from the network on which the heartbeat signal is communicated.

As a result, in the application monitoring means, the heartbeat stop means detects the abnormality of the application and stops the heartbeat signal, and the server device termination means detects the stop of the heartbeat signal and terminates the server device to supply power. In the control means, the server power control means detects the end of the server device, cuts off the power supplied to the server device, and causes the server device to be resupplied. Start the device.

Further, in the present invention, the server includes a server device on which the application operates and an interlocking device that operates based on the information provided by the server device, and receives a heartbeat signal confirming the operation of the server device to receive the server. In the failure recovery program for checking the operating status of the device, the computer uses the heartbeat stop means for detecting the abnormality of the application and stopping the heartbeat signal, and the server device for detecting the stop of the heartbeat signal. Communication of the heartbeat signal with an application monitoring means including a server device termination means for terminating, a server power control means for detecting the termination of the server device and controlling interruption and resupply of power supplied to the server device. Provided is a failure recovery program characterized in that it functions as a power supply control means including a server device remote start means for starting the server device from the network to be performed.

As a result, in the application monitoring means, the heartbeat stop means detects the abnormality of the application and stops the heartbeat signal, and the server device termination means detects the stop of the heartbeat signal and terminates the server device to supply power. In the control means, the server power control means detects the end of the server device, cuts off the power supplied to the server device, and resupplys the power, and the server device remote start means is a server from the network where the heartbeat signal is communicated. Start the device.

According to the failure monitoring / recovery system of the present invention, the method thereof, and the program thereof, the application monitoring means is such that the heartbeat stopping means detects an abnormality in the application and stops the heartbeat signal, and the server device termination means is a heart. Detecting the stop of the beat signal and terminating the server device, the power control means causes the server power control means to detect the end of the server device, cut off the power supplied to the server device and resupply it, and remotely start the server device. Since the means activates the server device from the network on which the heartbeat signal is communicated, it is possible to detect a failure that has occurred in the application software embedded in the device and safely recover from the failure.

It is a block diagram which shows the concept of the whole failure monitoring recovery system which concerns on 1st Embodiment. It is a block diagram which shows the detail of a monitoring recovery part. It is a block diagram which shows the detail of a control part. It is a block diagram which shows the detail of a power-source control part. A sequence flowchart showing the operation of each device between the server, power control device, and video display device from the state in which each device is operating normally to the failure of the video application in the server and the recovery from the failure. is there. It is a flowchart which shows the process of the server from the state which transmitted the heartbeat signal to a power control device to the detection of the failure of a video application, and the stop of a heartbeat signal. It is a flowchart which shows the process of the power-source control device from the failure of the video application to the restart of the video display device. It is a block diagram which shows the detail of a monitoring recovery part. A sequence flowchart showing the operation of each device between the server, power control device, and video display device from the state in which each device is operating normally to the failure of the video application in the server and the recovery from the failure. is there. It is a flowchart which shows the process of the power-source control device from the failure of the video application to restarting the video display device. It is a block diagram which shows the detail of a monitoring recovery part. A sequence flowchart showing the operation of each device between the server, power control device, and video display device from the state in which each device is operating normally to the failure of the video application in the server and the recovery from the failure. is there. It is a flowchart which shows the process of the server from the state which transmitted the heartbeat signal to a power control device to the detection of the failure of a video application, and the stop of a heartbeat signal. It is a flowchart which shows the process of the power-source control device from the failure of the video application to restarting the video display device.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[First Embodiment]
FIG. 1 is a block diagram showing the concept of the entire failure monitoring / recovery system according to the first embodiment.

The failure monitoring / recovery system of the present embodiment is a system incorporated in a digital signage system that displays advertisements such as images and characters on a display or the like installed outdoors, in a store, or in a public place, and is a digital signage system. This will be described as an example of monitoring the failure that occurs in the above and recovering from the failure that has occurred.

As shown in FIG. 1, the digital signage system 1000 incorporating the failure monitoring / recovery system includes a server device 100, a video display device 200, and a power supply control device 300.

Further, the server device 100 and the power control device 300 are connected to the network 400 via a network cable, and the server device 100 and the power control device 300 can communicate with each other via the network 400.

The server device 100 is a computer for providing video to a video display device 200 connected via a display cable, and is a communication unit 110, a server control unit 120, a monitoring / recovery unit 130, a video application 140, and display information. The output unit 150 is provided. Further, the server device 100 is connected to the power supply control device 300, and is operated by receiving power supplied by the connected power supply control device 300.

The communication unit 110 is connected to the server control unit 120, and is a communication device provided with a network interface such as a wired LAN (Local Area Network) or a wireless LAN, and the data sent from the server control unit 120 can be stored. It can be transmitted to the power supply control device 300 connected to the network 400. Further, the data transmitted from the power supply control device 300 connected to the network 400 can be received and sent to the server control unit 120.

The server control unit 120 is connected to the communication unit 110 and the monitoring / recovery unit 130, and is an operating system for providing basic control of the entire server device 100. The server control unit 120 includes a storage medium (not shown) for storing a program, and a computing device such as a CPU (Central Processing Unit) (not shown) for reading the program into a memory or the like and executing an instruction. Can run various application software.

Further, the server control unit 120 can set an operation called a heartbeat for transmitting short data to the power supply control device 300 at a predetermined cycle. The server control unit 120 transmits short data to the power supply control device 300 via the communication unit 110 and the network 400 at regular intervals without interruption of the heartbeat signal. As a result, when the heartbeat signal of the server device 100 is interrupted due to some failure, the power control device 300 can detect the failure of the server device 100.

The monitoring / recovery unit 130 is connected to the server control unit 120 and the video application 140, monitors the operating status of the video application 140 installed on the server device 100, and recovers from the failure when a failure occurs. Application software.

The video application 140 is connected to the monitoring / recovery unit 130 and the display information output unit 150, and is application software software for reproducing data such as images, videos, and sounds on the server device 100.

The video application 140 reads data related to images, videos, sounds, etc. stored in a storage medium or the like of the server control unit 120, and displays images, videos, and sounds on the video display device 200 via the connected display information output unit 150. Etc. are output and displayed.

The display information output unit 150 is connected to the video application 140 and the video display device 200, and digital signals such as video and audio such as HDMI (registered trademark) (High-Definition Multimedia Interface) and DVI (Digital Visual Interface). It is a communication interface to be transmitted by, and can send the video, audio, etc. reproduced by the video application 140 to the video display device 200.

The image display device 200 is a device for displaying an image output by the server device 100, and is connected to the server device 100 via a display cable. Examples of the image display device 200 include a cathode ray tube, a liquid crystal display, a plasma display, an organic electroluminescence display, and the like.

In addition, a projector or the like that displays an image or video by projecting it on a large screen or a wall may be used. Further, the video display device 200 is connected to the power supply control device 300, and is operated by receiving power supplied by the connected power supply control device 300.

The power control device 300 is a device capable of supplying electric power obtained from an external power source P such as a connected commercial power source to the connected equipment, and includes a power supply unit 310, a power supply control unit 320, and a communication unit 330. It includes an information storage unit 340, a first power output unit 350, and a second power output unit 360.

The power supply unit 310 is connected to an external power supply P such as a commercial power supply and a power supply control unit 320, and is connected to the power supply control device 300 via the first power supply output unit 350 and the second power supply output unit 360. And the image display device 200 can be supplied with electric power.

The power supply control unit 320 is connected to the power supply unit 310, the communication unit 330, the information storage unit 340, the first power supply output unit 350, and the second power supply output unit 360, and is used to control the operation of each unit set up. It is a thing.

Further, the power supply control unit 320 can determine whether or not the server device 100 connected via the network 400 is operating.
Specifically, as described above, the server device 100 transmits short data at regular intervals without interruption of the heartbeat signal via the network 400. The power supply control unit 320 can detect a failure of the server device 100 when the heartbeat is interrupted due to some kind of failure or the like.

The communication unit 330 is connected to the power supply control unit 320, and is a communication device having a network interface such as a wired LAN or a wireless LAN, and data sent from the power supply control unit 320 is connected to the network 400. It can be transmitted to the server device 100. Further, it is possible to receive the data transmitted from the server device 100 connected to the network 400 and send it to the power supply control unit 320.

The information storage unit 340 is connected to the power supply control unit 320, and the address information of the server device 100 connected via the network 400 and the first power output unit 350 and the power supply control unit 320 control the power supply control device 300. Information necessary for this is stored.

The first power supply output unit 350 is connected to the power supply control unit 320, the power input by the power supply unit 310 is controlled by the power supply control unit 320, and the power controlled by the power supply control unit 320 is connected from the outside. This is for outputting to the server device 100.

Specifically, the first power output unit 350 is a plug receiver of the wiring plug connector, and the plug of the wiring plug connector included in the server device 100 to be connected is inserted. , Power is supplied to the server device 100 via the power control device 300.

The second power supply output unit 360 is connected to the power supply control unit 320, the power input by the power supply unit 310 is controlled by the power supply control unit 320, and the power controlled by the power supply control unit 320 is connected from the outside. This is for outputting to the image display device 200.

Specifically, the second power output unit 360 is a plug receiver of the wiring plug connector, and the plug of the wiring plug connector included in the video display device 200 to be connected is inserted. Then, electric power is supplied to the image display device 200 via the power supply control device 300.

Here, first, an outline of a recovery method when a failure occurs in the digital signage system 1000 in which the failure monitoring and recovery system is incorporated will be described.
The server device 100 outputs the video and audio stored in advance to the video display device 200 by the installed video application 140. Further, the monitoring / recovery unit 130 constantly monitors the operating status of the video application 140.

Here, consider the case where the server device 100 fails. First, if a failure occurs in the server control unit 120, that is, if the server control unit 120 that controls the server device 100 freezes and stops working, the heartbeat operated by the server control unit 120 also stops. It will be.

In this case, the power control device 300 can detect that the server device 100 has a failure due to the interruption of the heartbeat signal transmitted by the server device 100, and cuts off the power to the server device 100 as a recovery means. Then, the power is re-supplied to the server device 100, and the power of the server device 100 connected to the network 400 can be remotely turned on via the network 400. A magic packet such as WoL (Wake-on-LAN). To restart. As a result, the failure that has occurred in the server device 100 can be recovered.

Next, consider the case where the server control unit 120 has no failure and only the video application 140 has a failure. Specifically, since no failure has occurred in the server control unit 120, the server device 100 is operating without any problem, and the server control unit 120 has a heart to the power control device 300 via the communication unit 110 and the network 400. Short data can be transmitted at regular intervals without interruption of the beat signal. However, the video application 140 is frozen due to some kind of failure, and it is not possible to provide accurate video information to the video display device 200.

In such a state, conventionally, the power supply control device 300 receives short data at regular intervals without interrupting the heartbeat signal, so that a failure occurring in the video application 140 mounted on the server device 100 can be caused. Could not detect.

Therefore, in the failure monitoring / recovery system of the present embodiment, the monitoring / recovery unit 130 constantly monitors the operating status of the video application 140, so that the monitoring / recovery unit 130 can detect a failure occurring in the video application 140. When the monitoring / recovery unit 130 detects a failure occurring in the video application 140, it transmits a heartbeat stop signal for stopping the heartbeat signal to the connected server control unit 120.

When the server control unit 120 receives the heartbeat stop signal from the monitoring / recovery unit 130, the server control unit 120 stops the heartbeat signal transmitted to the power supply control device 300. After that, the monitoring / recovery unit 130 transmits a signal for shutting down the server device 100 to the server control unit 120. As a result, the server device 100 is eventually shut down.

On the other hand, in the power supply control device 300, the power supply control unit 320 that no longer receives the heartbeat signal due to the server control unit 120 stopping the heartbeat signal detects that the heartbeat signal from the server device 100 is interrupted. Then, it is determined that the server device 100 or the video application 140 installed inside the server device 100 has a failure.

The power control unit 320 determines that the server device 100 or the video application 140 installed inside the server device 100 has a failure, so that the video display device 200 connected to the second power output unit 360 is connected to the power control unit 320. Cut off the power supply.

As a result, when the server device 100 or the video application 140 installed inside the server device 100 has a failure, an error screen displayed on the video display device 200 or when the server device 100 is shut down. It is possible to prevent the image displayed on the server from being displayed publicly.

Next, the power supply control unit 320 executes a PING command used to confirm network communication with the server device 100 at regular intervals after cutting off the power supply to the video display device 200 to send packets. Send.

At this time, if the server device 100 is shut down or the server control unit 120 is in a state of reacting during the shutdown, a response packet is normally returned to the power control device 300 that has executed the PING command.

The power control unit 320 determines that the server device 100 has not been normally shut down when the response packet is returned in this way. The execution of this PING command is repeated until the power supply control unit 320 is stopped.

When the server device 100 is shut down normally, no response packet is returned to the PING command executed by the power supply control unit 320. As a result, the power control unit 320 determines that the server device 100 has been shut down normally, and cuts off the power to the server device 100 connected to the first power output unit 350.

The power control unit 320 cuts off the power to the server device 100 connected to the first power output unit 350, and then restarts the power to the server device 100 connected to the first power output unit 350 to control the power supply. The unit 320 transmits a magic packet such as WoL to restart the server device 100.

At this time, the server device 100 cannot return a response packet to the PING command executed by the power control unit 320 for the server device 100 from the time when the server device 100 is shut down to the time when the server device 100 is restarted normally. ..

When the server device 100 is restarted normally, the server device 100 returns a response packet to the PING command executed by the power control unit 320 for the server device 100. As a result, the power supply control unit 320 determines that the server device 100 has restarted normally, and stops the PING command executed for the server device 100.

After that, the server device 100 restarts the heartbeat that is set to be automatically executed after startup, and the video application 140 and the monitoring recovery unit 130 that are also set to be automatically executed after startup. Is activated, the reproduced video is provided to the video display device 200, and the operating status thereof is monitored by the monitoring / recovery unit 130.

When the server control unit 120 restarts the heartbeat, the power supply control unit 320 receives short data at regular intervals without interrupting the heartbeat signal, and the server device 100 or the video application 140 operates normally. It can be judged that it is.

In this way, no failure has occurred in the server control unit 120, and even if a failure occurs only in the video application 140, the server device 100 is restarted by the operation of the monitoring / recovery unit 130 and the power control device 300. It is possible to recover from a failure that has occurred in the video application 140.

Further, when the server device 100 is restarted, the power control device 300 cuts off the power supply to the server device 100, so that the power of the server device 100 can be completely turned off, such as the hardware of the server device 100. Can be cold-started to restart the server device 100 from the initialized state.

As a result, as compared with the warm start in which the power of the server device 100 is not turned off, that is, the information input to the server device 100 is not initialized, the storage medium and the server control unit 120 included in the server device 100 and the like are compared with the warm start. Since the operating system of the server device 100 is completely initialized, the server device 100 can be restarted from an unstable state to a completely initialized state.

Here, the power supply is controlled by the power supply control unit 320 shutting off or starting the power supply to the video display device 200 connected to the second power supply output unit 360, but the video display device 200 is a network compatible device. In the case where the power control unit 320 is connected to the network 400, the power supply control unit 320 transmits a control command to the video display device 200 connected via the network 400 to power the video display device 200. Control may be performed.

As described above, as an example of power control of the image display device 200 via the network 400, a projector display unified regardless of the manufacturer using TCP (Transmission Control Protocol) / IP (Internet Protocol). A command called PJlink is known as a control command for. When the power supply control unit 320 executes this PJlink command for the preset IP address of the video display device 200, the power supply control device 300 can control the power supply of the video display device 200.

FIG. 2 is a block diagram showing details of the monitoring / recovery unit.
As shown in FIG. 2, the monitoring / recovery unit 130 includes a video application monitoring unit 131, a heartbeat stop command unit 132, and a shutdown execution unit 133.

The video application monitoring unit 131 is connected to the heartbeat stop command unit 132, the shutdown execution unit 133, and the video application 140, and by monitoring the operating status of the video application 140, it is possible to detect a failure that occurs in the video application 140. belongs to.

The video application monitoring unit 131 monitors, for example, the operating status of the CPU, and determines whether the video application 140 is not frozen or occupies the CPU in an abnormal situation. In addition, it may be determined whether or not the video displayed by the video application is displayed in the foreground of the video display device 200.

When the video application monitoring unit 131 determines that the video application 140 has a failure, it transmits a failure occurrence signal to the heartbeat stop command unit 132 and the shutdown execution unit 133.

The heartbeat stop command unit 132 is connected to the video application monitoring unit 131 and the server control unit 120, and is for issuing a command to stop the heartbeat signal to the connected server control unit 120.

When the heartbeat stop command unit 132 receives the failure occurrence signal transmitted by the video application monitoring unit 131 due to a failure in the video application 140, the heartbeat stop command unit 132 sends a heartbeat signal to the server control unit 120. Send an instruction to stop. As a result, the server device 100 stops the data transmitted to the power supply control device 300 at regular intervals.

The shutdown execution unit 133 is connected to the video application monitoring unit 131 and the server control unit 120, and sends a command to shut down the server device 100 to the connected server control unit 120 to execute the shutdown. Is.

When the shutdown execution unit 133 receives the failure occurrence signal transmitted by the video application monitoring unit 131 due to a failure in the video application 140, the shutdown execution unit 133 gives a command to the server control unit 120 to shut down the server device 100. Send. As a result, the server device 100 shuts down, and eventually the server device 100 is shut down.

FIG. 3 is a block diagram showing details of the control unit.
As shown in FIG. 3, the server control unit 120 includes a heartbeat transmission unit 121 and a PING response unit 122. The server control unit 120 also includes a storage medium for storing a program or the like, a memory for reading the program, a CPU for executing the program read in the memory, and the like, but the description thereof is omitted here. ..

The heartbeat transmission unit 121 is connected to the monitoring / recovery unit 130 and the communication unit 110, and transmits data to a specific device connected to the network, in this case, the server device 100, at a predetermined cycle. It is for transmitting a signal.

The heartbeat transmission unit 121 is automatically executed every time the server device 100 is started, and continues to transmit the heartbeat signal until it receives a command to stop the heartbeat signal. However, when the operation of the server control unit 120 becomes unstable and freezes, the heartbeat transmission unit 121 cannot transmit the heartbeat signal accordingly.

When the heartbeat stop command unit 132 transmits a heartbeat stop signal for stopping the heartbeat signal to the server control unit 120 due to a failure in the video application 140, the heartbeat transmission unit 121 sends the power supply control device 300. Stops the heartbeat signal that was being sent to.

The PING response unit 122 is connected to the monitoring / recovery unit 130 and the communication unit 110, and is a response packet to a packet transmitted by a PING command executed to the server device 100 from a device connected to the network 400. Is for replying.

When the PING response unit 122 receives the packet transmitted by the PING command executed by the power supply control device 300 via the communication unit 110 and the network 400, the PING response unit 122 returns a response packet to the power supply control device 300. To do.

As a result, it is possible to confirm the communication of the network between the power supply control device 300 and the server device 100, and it is possible to confirm that the server device 100 is operating in the power supply control device 300.

FIG. 4 is a block diagram showing details of the power supply control unit.
As shown in FIG. 4, the power supply control unit 320 includes a heartbeat receiving unit 321, a PING transmitting / receiving unit 322, a power feeding unit 323, and a magic packet transmitting unit 324.

The heartbeat reception unit 321 is connected to the communication unit 330, the PING transmission / reception unit 322, the power supply unit 323, and the information storage unit 340, and the server device 100 connects to the power supply control device 300 via the communication unit 330 and the network 400. The heartbeat signal transmitted is received, and it is determined whether or not the server device 100 or the video application 140 installed inside the server device 100 has a failure.

If the heartbeat receiver 321 cannot receive the heartbeat signal at predetermined intervals, the heartbeat receiver 321 is a video application installed inside the server device 100 or the server device 100 that is the source of the heartbeat. It is determined that the 140 has a failure.

When the heartbeat receiving unit 321 determines that the server device 100 or the video application 140 installed inside the server device 100 has a failure, the heartbeat receiving unit 321 transmits the PING transmitting / receiving unit 322 and the power feeding unit 323. Then, a failure occurrence notification signal for notifying that a failure has occurred in the server device 100 or the video application 140 installed inside the server device 100 is transmitted.

When the heartbeat receiving unit 321 receives the heartbeat signal at a predetermined interval, the heartbeat receiving unit 321 is installed inside the server device 100 or the server device 100 which is the source of the heartbeat. It is determined that the video application 140 is operating normally.

The PING transmission / reception unit 322 is connected to the communication unit 330, the heartbeat reception unit 321, the magic packet transmission unit 324, the power supply unit 323, and the information storage unit 340, and the PING transmission / reception unit 322 is connected to the communication unit 330 and the network 400. Executes a PING command to the server device 100 to send a packet, and the server device 100 receives a response packet in response to the power control device 300.

The PING transmission / reception unit 322 determines that the heartbeat reception unit 321 has a failure in the server device 100 or the video application 140 installed inside the server device 100, and transmits a failure occurrence notification signal transmitted to the PING transmission / reception unit 322. By receiving the signal, the PING command is repeatedly executed at regular intervals for the server device 100 in which the failure has occurred.

At this time, if the PING transmitter / receiver 322 receives a response packet returned by the server device 100 in response to the PING command executed by the PING transmitter / receiver 322 at regular intervals, it means that the server device 100 is activated. If the PING transmitter / receiver unit 322 determines and the PING transmitter / receiver unit 322 does not receive the response packet returned by the server device 100 in response, it means that the server device 100 has not started, that is, the server device 100 has been shut down normally. The transmission / reception unit 322 determines.

When the PING transmission / reception unit 322 determines that the server device 100 has been shut down normally, the PING transmission / reception unit 322 transmits a shutdown completion signal notifying the power supply unit 323 that the server device 100 has been shut down normally. ..

The power supply unit 323 is connected to the heartbeat reception unit 321, the PING transmission unit 322, the magic packet transmission unit 324, the information storage unit 340, the first power output unit 350, and the second power output unit 360, and is connected to the first power output. This is for controlling the supply of electric power to the server device 100 connected to the unit 350 and the image display device 200 connected to the second power output unit 360.

The power supply unit 323 determines that the heartbeat reception unit 321 has a failure in the server device 100 or the video application 140 installed inside the server device 100, and receives the failure occurrence notification signal transmitted to the power supply unit 323. Then, the supply of power to the image display device 200 connected to the second power output unit 360 is cut off.

Further, the PING transmission / reception unit 322 determines that the server device 100 has been normally shut down by the power supply unit 323, and receives the shutdown completion signal transmitted to the power supply unit 323, so that the server device 100 connected to the first power output unit 350 is connected. The power supply to the server is cut off, and after waiting for a certain period of time, the power supply is restarted.

When the power supply unit 323 cuts off and resupplys the power supply to the server device 100 connected to the first power output unit 350, the power supply unit 323 cuts off / supplies power to the magic packet transmission unit 324. Send a power off / supply completion notification to notify that it has been completed.

Further, when the power supply unit 323 receives the magic packet transmission completion signal notifying the server device 100 that the magic packet transmission is completed by the magic packet transmission unit 324 described later, the power supply unit 323 restarts the server device 100. After waiting for a certain period of time until it stabilizes, power is supplied again to the image display device 200 connected to the second power output unit 360 that has been shut off.

The magic packet transmission unit 324 is connected to the PING transmission / reception unit 322, the power supply unit, and the information storage unit 340, and powers on the server device 100 connected via the communication unit 330 and the network 400 by remote operation. This is for transmitting a magic packet such as WoL that can be generated to the server device 100 to restart the server device 100.

When the power supply unit 323 cuts off and resupplys the power supply to the server device 100 connected to the first power output unit 350 and receives the power cutoff / supply completion notification, the magic packet transmission unit 324 transmits the magic packet. The unit 324 transmits a magic packet to the server device 100. As a result, the power control device 300 can remotely restart the server device 100 that receives the magic packet.

The destination of the PING command executed by the PING transmission / reception unit, the transmission destination of the magic packet transmission unit, the waiting time for the power supply unit 323 to wait, and the like can be stored in the connected information storage unit 340.

FIG. 5 shows the operation of each device between the server, the power control device, and the video display device from the state in which each device is operating normally to the failure of the video application in the server and the recovery from the failure. It is a sequence flowchart which shows. Hereinafter, the process shown in FIG. 5 will be described along with the step numbers.

[Step S11]
The server device 100 transmits a heartbeat signal. Specifically, the heartbeat transmission unit 121 included in the server control unit 120 transmits a heartbeat signal to the power supply control device 300 at predetermined fixed intervals.

[Step S12]
The power control device 300 recognizes that the server device 100 is operating normally. Specifically, the heartbeat signal transmitted in step S11 is received by the heartbeat receiving unit 321 included in the power supply control device 300 at regular intervals, so that the server device 100 of the power supply control device operates normally. Recognize that you are.

[Step S13]
A failure occurs in the video application 140. Specifically, no failure has occurred in the server control unit 120 included in the server device 100, and a failure such as a freeze or abnormal occupation of the CPU occurs only in the video application 140.

[Step S14]
The server device 100 stops the heartbeat signal. Specifically, the video application monitoring unit 131 included in the monitoring / recovery unit 130 monitors the video application 140, and when a failure occurs in the video application 140, the heartbeat stop command unit 132 provided in the monitoring / recovery unit 130 controls the server. A command to stop the heartbeat signal is transmitted to the unit 120.

[Step S15]
The power control device 300 recognizes that the video application 140 has a failure. Specifically, since the heartbeat is stopped in step S14, the heartbeat receiving unit 321 included in the power supply control device 300 cannot receive at regular intervals, so that the power supply control device 300 has a failure in the video application 140. Recognize that.

[Step S16]
The power control device 300 shuts off the power supply of the video display device 200. Specifically, the power supply unit 323 included in the power supply control device 300 cuts off the power supplied to the video display device 200 connected to the second power supply output unit 360.

[Step S17]
The image display device 200 stops displaying the image. Specifically, since the power supplied in step S16 is cut off, the image publicly displayed on the image display device 200 is stopped.

[Step S18]
The server device 100 starts shutting down. Specifically, the shutdown execution unit 133 included in the monitoring / recovery unit 130 sends a command to shut down the server device 100 to the server control unit 120 to shut down the server device 100.

[Step S19]
The power control device 300 starts executing the PING command. Specifically, the PING transmission / reception unit 322 included in the power supply control unit 320 starts an operation of executing a PING command to the server device 100 at a predetermined fixed interval.

[Step S20]
The power control device 300 executes a PING command. Specifically, the PING transmission / reception unit 322 included in the power supply control unit 320 executes a PING command to the server device 100 at a predetermined interval to transmit a packet, and the server device 100 whose shutdown has not been completed responds. By doing so, the PING transmission / reception unit 322 receives the response packet.

[Step S21]
Shutdown of the server device 100 is completed.
[Step S22]
The power control device 300 executes a PING command. Specifically, the PING transmission / reception unit 322 included in the power supply control unit 320 executes a PING command to the server device 100 at a predetermined interval to transmit a packet, and the shutdown of the server device 100 is completed in step S22. Therefore, the server device 100 does not respond and the PING transmitter / receiver unit 322 cannot receive the response packet.

[Step S23]
The power control device 300 recognizes that the server device 100 has been shut down. Specifically, in step S22, the PING transmission / reception unit 322 cannot receive the response packet, so that the power control device 300 recognizes that the server device 100 has been shut down.

[Step S24]
The power control device 300 stops executing the PING command. Specifically, the PING transmission / reception unit 322 included in the power supply control unit 320 stops the operation of executing the PING command to the server device 100 at a predetermined fixed interval.

[Step S25]
The power control device 300 shuts off the power supply of the server device 100. Specifically, the power supply unit 323 included in the power supply control device 300 cuts off the power supplied to the server device 100 connected to the first power supply output unit 350.

[Step S26]
The power control device 300 starts the power supply of the server device 100. Specifically, the power supply unit 323 included in the power supply control device 300 starts the power supplied to the server device 100 connected to the first power supply output unit 350.

[Step S27]
The power control device 300 activates the server device 100. Specifically, the magic packet transmission unit included in the power supply control device 300 activates the server device 100 by transmitting a magic packet to the server device 100.

[Step S28]
The server device 100 starts up. Specifically, the server device 100 starts to start when the magic packet transmitted by the power control device 300 in step S27 is received.

[Step S29]
The server device 100 starts transmitting the heartbeat signal. Specifically, the server device 100 activated in step S28 starts an operation of transmitting a heartbeat signal to the power supply control device 300 at regular intervals by setting a heartbeat preset in the server control unit 120.

[Step S30]
The server device 100 transmits a heartbeat signal. Specifically, the heartbeat transmission unit 121 included in the server control unit 120 transmits a heartbeat signal to the power supply control device 300 at predetermined fixed intervals.

[Step S31]
The power control device 300 recognizes that the server device 100 is operating normally. Specifically, the heartbeat signal transmitted in step S29 is received by the heartbeat receiving unit 321 included in the power supply control device 300 at regular intervals, so that the server device 100 of the power supply control device operates normally. Recognize that you are.

[Step S32]
The video application 140 is started on the server device 100. Specifically, when the server device 100 is started in step S28, the preset video application 140 is automatically started.

[Step S33]
The power control device 300 turns on the image display device 200. Specifically, the power supply unit 323 included in the power supply control device 300 starts the power supplied to the video display device 200 connected to the second power supply output unit 360.

[Step S34]
The image display device 200 starts displaying an image. Specifically, the display of the video of the video display device 200 is started by starting the electric power whose supply was cut off in step S33 and activating the video application 140 in step S32.

In the sequence flowchart of FIG. 5, although the example in which the video application 140 fails is shown, the server device 100 fails and the server control unit 120 can transmit a heartbeat signal to the power supply control device 300. Even if it disappears, it is possible to recover from the failure caused in the server device 100 by the processing after step S15.

Specifically, since the failed server device 100 does not respond to the PING command executed by the power control device 300 in step S20, the power control device 300 can cold-start the server device 100.

FIG. 6 is a flowchart showing the processing of the server from the state where the heartbeat signal is transmitted to the power control device to the detection of the failure of the video application and the stop of the heartbeat signal. Hereinafter, the process shown in FIG. 6 will be described along with the step numbers.

[Step S101]
The server device 100 transmits a heartbeat signal to the power control device 300. Specifically, the server device 100 transmits a heartbeat signal to the power supply control device 300 according to a heartbeat setting preset in the server control unit 120 included in the server device 100.

[Step S102]
The server device 100 confirms the operating status of the video application 140. Specifically, the video application monitoring unit 131 included in the server device 100 confirms whether or not the video application 140 is operating normally.

[Step S103]
The server device 100 determines whether or not the video application 140 is operating normally. Specifically, the video application monitoring unit 131 included in the server device 100 determines whether or not the video application 140 is operating normally.

When the video application monitoring unit 131 determines that the video application 140 is operating normally, the process proceeds to step S101, and when the video application monitoring unit 131 determines that the video application 140 is not operating normally, the process proceeds to step S101. , The process proceeds to step S104, and a failure occurrence signal is transmitted to the heartbeat stop command unit 132.

[Step S104]
The server device 100 stops the heartbeat signal. Specifically, when the heartbeat stop command unit 132 included in the server device 100 receives the failure occurrence signal in step S103, the heartbeat stop command unit 132 causes the server control unit 120 to stop the heartbeat signal. Send a stop signal.

FIG. 7 is a flowchart showing the processing of the power supply control device from the occurrence of the failure of the video application to the restart of the video display device. Hereinafter, the process shown in FIG. 7 will be described along with the step numbers.

[Step S111]
The power control device 300 confirms the heartbeat signal. Specifically, the heartbeat receiving unit 321 included in the power supply control device 300 confirms the heartbeat signal transmitted from the server device 100 at regular intervals.

[Step S112]
The power control device 300 determines whether or not the heartbeat signal is received. Specifically, the heartbeat receiving unit 321 included in the power supply control device 300 determines whether or not the heartbeat signals transmitted from the server device 100 at regular intervals are received at regular intervals.

When it is determined that the heartbeat receiving unit 321 has received the heartbeat signal transmitted from the server device 100 at regular intervals, the process proceeds to step S111, and the heartbeat signal transmitted from the server device 100 is received by the heartbeat receiving unit. When it is determined that 321 has not received at regular intervals, the process proceeds to step S113.

[Step S113]
The power control device 300 stops the power supply of the video display device 200. Specifically, the power supply unit 323 included in the power supply control device 300 cuts off the power supplied to the video display device 200 connected to the second power supply output unit 360.

[Step S114]
The power control device 300 executes a PING command. Specifically, the PING transmission / reception unit 322 included in the power supply control device 300 executes a PING command to the server device 100 to transmit a packet.

[Step S115]
The power control device 300 determines whether or not there is a response to the PING command. Specifically, the PING transmission / reception unit 322 determines whether or not the server device 100 has returned a response packet with respect to the packet transmitted in step S114.

When the PING transmission / reception unit 322 determines that the server device 100 has returned the response packet, the process proceeds to step S114, and when the PING transmission / reception unit 322 determines that the server device 100 has not returned the response packet, the process is performed. Proceed to step S116.

[Step S116]
The power control device 300 stops the repeated execution of the PING command. In particular,
The PING transmission / reception unit 322 included in the power control device 300 stops the PING command that has been repeatedly executed for the server device 100.

[Step S117]
The power control device 300 shuts off the power of the server device 100 and then restarts it. Specifically, the power supply unit 323 included in the power supply control device 300 cuts off the power supplied to the server device 100 connected to the first power output unit 350, waits for the elapse of a predetermined time, and then supplies the power. Resume supply.

[Step S118]
The power control device 300 transmits a magic packet. Specifically, the magic packet transmission unit 324 included in the power supply control device 300 transmits a magic packet for activating the server device 100 to the server device 100.

[Step S119]
The power control device 300 confirms the heartbeat signal. Specifically, the heartbeat receiving unit 321 included in the power supply control device 300 confirms the heartbeat signal transmitted from the server device 100 at regular intervals.

[Step S120]
The power control device 300 determines whether or not the heartbeat signal is received. Specifically, the heartbeat receiving unit 321 included in the source control device 300 determines whether or not the heartbeat signal transmitted from the server device 100 at regular intervals is received.

When it is determined that the heartbeat receiving unit 321 has received the heartbeat signal transmitted from the server device 100, the process proceeds to step S121, and the heartbeat receiving unit 321 receives the heartbeat signal transmitted from the server device 100. If it is determined that the process has not been performed, the process proceeds to step S119.

[Step S121]
The power control device 300 turns on the image display device 200. Specifically, the power supply unit 323 included in the power supply control device 300 restarts the power cut off to the video display device 200 connected to the second power supply output unit 360.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. The failure monitoring / recovery system of the present embodiment is substantially the same as the configuration shown in the first embodiment, except that the details of the monitoring / recovery unit and the processing flow are different. Therefore, the same components as those in the first embodiment will be designated by the same reference numerals, and the description thereof will be omitted as appropriate.

FIG. 8 is a block diagram showing details of the monitoring / recovery unit.
As shown in FIG. 8, the monitoring / recovery unit 130 includes a video application monitoring unit 131, a heartbeat stop command unit 132, a shutdown execution unit 133, and a server restart execution unit 134.

The server restart execution unit 134 is connected to the video application monitoring unit 131 and the server control unit 120, and sends a command to restart the server device 100 to the connected server control unit 120 to send the server device 100. It is for restarting.

When the server restart execution unit 134 receives the failure occurrence signal transmitted by the video application monitoring unit 131 due to a failure in the video application 140, the server restart execution unit 134 sends the server device 100 to the server control unit 120. Send a command to restart. As a result, the server device 100 is restarted, and eventually the server device 100 is restarted.

A failure occurs in the video application 140, and in order to recover from the failure, it may be possible to recover by simply restarting the server device 100 instead of cold-starting the server device 100, which can be recovered in a short time. .. The server restart execution unit 134 in the second embodiment is effective in such a case.

FIG. 9 shows the operation of each device between the server, the power control device, and the video display device from the state in which each device is operating normally until a failure occurs in the video application in the server and the failure is recovered. It is a sequence flowchart which shows. Hereinafter, the process shown in FIG. 9 will be described along with the step numbers. It should be noted that the description of the one that performs the same processing as the sequence flowchart of FIG. 5 will be omitted as appropriate.
[Step S11] to [Step S17]
Since the processing is the same as that of the sequence flowchart of FIG. 5, the description thereof will be omitted.

[Step S17-1]
The server device 100 starts restarting. Specifically, the server restart execution unit 134 included in the monitoring / recovery unit 130 sends a command to restart the server device 100 to the server control unit 120 to restart the server device 100.
[Step S19] to [Step S23]
Since the processing is the same as that of the sequence flowchart of FIG. 5, the description thereof will be omitted.

[Step S23-1]
The server device 100 starts up. Specifically, the server device 100 automatically starts to start after step S21 by the restart command transmitted by the server restart execution unit 134 included in the monitoring / recovery unit 130 in step S17-1. ..

[Step S23-2]
The power control device 300 executes a PING command. Specifically, the PING transmission / reception unit 322 included in the power supply control unit 320 executes a PING command to the server device 100 at a predetermined interval to transmit a packet, and the server device 100 whose shutdown has not been completed responds. By doing so, the PING transmission / reception unit 322 receives the response packet.

[Step S23-3]
The power control device 300 confirms that the server device 100 has started. Specifically, in step S23-2, the PING transmission / reception unit 322 included in the power supply control unit 320 receives the response packet returned by the server device 100, so that the server device 100 is activated in the power control device 300. Make sure you did.

[Step S23-4]
The power control device 300 stops executing the PING command. Specifically, the PING transmission / reception unit 322 included in the power supply control unit 320 stops the operation of executing the PING command to the server device 100 at a predetermined fixed interval.
[Step S28] to [Step S34]
Since the processing is the same as the sequence flowchart of FIG. 5, the description will be omitted.

FIG. 10 is a flowchart showing the processing of the power supply control device from the occurrence of the failure of the video application to the restarting of the video display device. Hereinafter, the process shown in FIG. 10 will be described along with the step numbers.

[Step S131]
The power control device 300 confirms the heartbeat signal. Specifically, the heartbeat receiving unit 321 included in the power supply control device 300 confirms the heartbeat signal transmitted from the server device 100 at regular intervals.

[Step S132]
The power control device 300 determines whether or not the heartbeat signal is received. Specifically, the heartbeat receiving unit 321 included in the source control device 300 determines whether or not the heartbeat signal transmitted from the server device 100 at regular intervals is received.

When it is determined that the heartbeat receiving unit 321 has received the heartbeat signal transmitted from the server device 100, the process proceeds to step S131, and the heartbeat receiving unit 321 receives the heartbeat signal transmitted from the server device 100. If it is determined that the process has not been performed, the process proceeds to step S133.

[Step S133]
The power control device 300 stops the power supply of the video display device 200. Specifically, the power supply unit 323 included in the power supply control device 300 cuts off the power supplied to the video display device 200 connected to the second power supply output unit 360.

[Step S134]
The power control device 300 executes a PING command. Specifically, the PING transmission / reception unit 322 included in the power supply control device 300 executes a PING command to the server device 100 to transmit a packet.

[Step S135]
The power control device 300 determines whether or not there is a response to the PING command. Specifically, the PING transmission / reception unit 322 determines whether or not the server device 100 has returned a response packet with respect to the packet transmitted in step S114.

When the PING transmission / reception unit 322 determines that the server device 100 has not returned the response packet, the process proceeds to step S136, and when the PING transmission / reception unit 322 determines that the server device 100 has returned the response packet, the process is performed. Proceed to step S142.

[Step S136]
The power control device 300 confirms that the server device 100 has completed the server termination process among the server termination step and the startup process of the restart process. Specifically, since the server device 100 no longer returns the response packet in step S135, the power control device 300 confirms that the server termination process of the server device 100 has been completed.

[Step S137]
The power control device 300 executes a PING command. Specifically, the PING transmission / reception unit 322 included in the power supply control device 300 executes a PING command to the server device 100 to transmit a packet.

[Step S138]
The power control device 300 determines whether or not there is a response to the PING command. Specifically, the PING transmission / reception unit 322 determines whether or not the server device 100 has returned a response packet with respect to the packet transmitted in step S114.

When the PING transmitter / receiver unit 322 determines that the server device 100 has returned a response packet, the process proceeds to step S139 to confirm that the server device 100 has been restarted, and the server device 100 does not return a response packet. When the PING transmitter / receiver unit 322 determines that the packet is received, the process proceeds to step S137.

[Step S139]
The power control device 300 stops the repeated execution of the PING command. In particular,
The PING transmission / reception unit 322 included in the power control device 300 stops the PING command that has been repeatedly executed for the server device 100.

[Step S140]
The power control device 300 confirms the heartbeat signal. Specifically, the heartbeat receiving unit 321 included in the power supply control device 300 confirms the heartbeat signal transmitted from the server device 100 at regular intervals.

[Step S141]
The power control device 300 determines whether or not the heartbeat signal is received. Specifically, the heartbeat receiving unit 321 included in the source control device 300 determines whether or not the heartbeat signal transmitted from the server device 100 at regular intervals is received.

When it is determined that the heartbeat receiving unit 321 has received the heartbeat signal transmitted from the server device 100, the process proceeds to step S142, and the heartbeat receiving unit 321 receives the heartbeat signal transmitted from the server device 100. If it is determined that the process has not been performed, the process proceeds to step S140.

[Step S142]
The power control device 300 turns on the image display device 200. Specifically, the power supply unit 323 included in the power supply control device 300 restarts the power cut off to the video display device 200 connected to the second power supply output unit 360.

[Step S143]
The power control device 300 determines whether or not the processes of steps S134 to S135 have been repeated a predetermined number of times.

When the power control device 300 determines that the processes of steps S134 to S135 have been repeated a predetermined number of times, it is determined that the server device 100 cannot be restarted, the process proceeds to step S24 of FIG. 5, and the power control device 300 advances the process. When it is determined that the processes of steps S134 to S135 have not been repeated a predetermined number of times, the process proceeds to step S34.

By performing the processing as described above, when a failure occurs in the video application 140, the server device 100 is restarted first, and when the restart is successful and the video application 140 operates normally, the video display device 200 You can turn on the power of and restart the video.

If the restart is not successful, that is, if the server device 100 does not respond, the process proceeds to step S24 of FIG. 5, and the power control device 300 cuts off the power of the server device 100 to cause a cold start. Therefore, it is possible to reliably recover from a failure.

[Third Embodiment]
Next, a third embodiment of the present invention will be described. The failure monitoring / recovery system of the present embodiment is substantially the same as the configurations shown in the first embodiment and the second embodiment, except that the details of the monitoring / recovery unit and the processing flow are different. Therefore, the same reference numerals will be given to the components substantially the same as those of the first embodiment and the second embodiment, and the description thereof will be omitted as appropriate.

FIG. 11 is a block diagram showing details of the monitoring / recovery unit.
As shown in FIG. 11, the monitoring / recovery unit 130 includes a video application monitoring unit 131, a heartbeat stop command unit 132, a shutdown execution unit 133, a server restart execution unit 134, and an application restart execution unit 135.

The application restart execution unit 135 is connected to the video application monitoring unit 131 and the server control unit 120, and transmits a command to restart the video application 140 after terminating the video application 140 connected via the video application monitoring unit 131. This is for restarting the video application 140.

When the server restart execution unit 134 receives the failure occurrence signal transmitted by the video application monitoring unit 131 due to a failure in the video application 140, the application restart execution unit 135 terminates the video application 140 and then restarts it. This is for sending a command to restart the video application 140.

A failure occurs in the video application 140, and in order to recover from the failure, it may be possible to recover by simply restarting the video application 140 instead of cold-starting or restarting the server device 100, and the recovery can be performed in a short time. be able to. The application restart execution unit 135 in the third embodiment is effective in such a case.

FIG. 12 shows the operation of each device between the server, the power control device, and the video display device from the state in which each device is operating normally to the failure of the video application in the server and the recovery from the failure. It is a sequence flowchart which shows. Hereinafter, the process shown in FIG. 9 will be described along with the step numbers. It should be noted that the description of the one that performs the same processing as the sequence flowchart of FIG.

[Step S11] to [Step S17]
Since the processing is the same as that of the sequence flowchart of FIG. 5, the description thereof will be omitted.
[Step S17-2]
The server device 100 terminates the video application 140. Specifically, the application restart execution unit 135 included in the monitoring / recovery unit 130 is temporarily terminated in order to restart the video application 140.

[Step S17-3]
The server device 100 activates the video application 140. Specifically, the application restart execution unit 135 included in the monitoring / recovery unit 130 activates the video application 140 that has been temporarily terminated in order to restart the video application 140 in step S17-2.
[Step S28] to [Step S34]
Since the processing is the same as that of the sequence flowchart of FIG. 5, the description thereof will be omitted.

FIG. 13 is a flowchart showing the processing of the server from the state in which the heartbeat signal is transmitted to the power control device to the detection of the failure of the video application and the stop of the heartbeat signal. Hereinafter, the process shown in FIG. 6 will be described along with the step numbers.

[Step S151]
The server device 100 transmits a heartbeat signal to the power control device 300. Specifically, the server device 100 transmits a heartbeat signal to the power supply control device 300 according to a heartbeat setting preset in the server control unit 120 included in the server device 100.

[Step S152]
The server device 100 confirms the operating status of the video application 140. Specifically, the video application monitoring unit 131 included in the server device 100 confirms whether or not the video application 140 is operating normally.

[Step S153]
The server device 100 determines whether or not the video application 140 is operating normally. Specifically, the video application monitoring unit 131 included in the server device 100 determines whether or not the video application 140 is operating normally.

When the video application monitoring unit 131 determines that the video application 140 is operating normally, the process proceeds to step S151, and when the video application monitoring unit 131 determines that the video application 140 is not operating normally, the process proceeds to step S151. , The process proceeds to step S154, and a failure occurrence signal is transmitted to the heartbeat stop command unit 132.

[Step S154]
The server device 100 stops the heartbeat signal. Specifically, when the heartbeat stop command unit 132 included in the server device 100 receives the failure occurrence signal in step S153, the heartbeat stop command unit 132 causes the server control unit 120 to stop the heartbeat signal. Send a signal.

[Step S155]
The server device 100 terminates the video application 140. Specifically, when the application restart execution unit 135 included in the server device 100 receives the failure occurrence signal in step S153, the application restart execution unit 135 terminates the video application 140 to the server control unit 120. A signal is transmitted to terminate the video application 140.
[Step S156]
The server device 100 activates the video application 140. Specifically, when the application restart execution unit 135 included in the server device 100 terminates the video application 140 in step S155, the application restart execution unit 135 activates the video application 140 to activate the video application 140 to the server control unit 120. A signal is transmitted to reactivate the video application 140.
[Step S157]
The server device 100 determines whether or not the video application 140 is operating normally. Specifically, the video application monitoring unit 131 included in the server device 100 determines whether or not the video application 140 is operating normally.

When the video application monitoring unit 131 determines that the video application 140 is operating normally, the process proceeds to step S158, and when the video application monitoring unit 131 determines that the video application 140 is not operating normally, the process proceeds to step S158. , The process proceeds to step S155.
[Step S158]
The server device 100 starts transmitting the heartbeat signal. Specifically, the video application monitoring unit 131 included in the server device 100 starts the heartbeat by transmitting a signal to the server control unit 120 to start the operation of transmitting the heartbeat signal at regular intervals.

[Step S159]
The server device 100 determines whether or not the processing of steps S155 to S157 has been repeated a predetermined number of times.

When the server device 100 determines that the processes of steps S155 to S157 have been repeated a predetermined number of times, it is determined that the server device 100 cannot operate normally by restarting the video application 140, and the process is performed by the server device 100 of step S18 in FIG. When the process proceeds to the shutdown process or the restart process of the server device 100 in step S17-1, and the server device 100 determines that the process of steps S155 to S157 has not been repeated a predetermined number of times, the process is stepped. Proceed to S155.

FIG. 14 is a flowchart showing the processing of the power supply control device from the occurrence of the failure of the video application to the restarting of the video display device. Hereinafter, the process shown in FIG. 14 will be described along with the step numbers.

[Step S161]
The power control device 300 confirms the heartbeat signal. Specifically, the heartbeat receiving unit 321 included in the power supply control device 300 confirms the heartbeat signal transmitted from the server device 100 at regular intervals.

[Step S162]
The power control device 300 determines whether or not the heartbeat signal is received. Specifically, the heartbeat receiving unit 321 included in the source control device 300 determines whether or not the heartbeat signal transmitted from the server device 100 at regular intervals is received.

When it is determined that the heartbeat receiving unit 321 has received the heartbeat signal transmitted from the server device 100, the process proceeds to step S161, and the heartbeat receiving unit 321 receives the heartbeat signal transmitted from the server device 100. If it is determined that the process has not been performed, the process proceeds to step S163.

[Step S163]
The power control device 300 stops the power supply of the video display device 200. Specifically, the power supply unit 323 included in the power supply control device 300 cuts off the power supplied to the video display device 200 connected to the second power supply output unit 360.

[Step S164]
The power control device 300 confirms the heartbeat signal. Specifically, the heartbeat receiving unit 321 included in the power supply control device 300 confirms the heartbeat signal transmitted from the server device 100 at regular intervals.

[Step S165]
The power control device 300 determines whether or not the heartbeat signal is received. Specifically, the heartbeat receiving unit 321 included in the source control device 300 determines whether or not the heartbeat signal transmitted from the server device 100 at regular intervals is received.

When it is determined that the heartbeat receiving unit 321 has received the heartbeat signal transmitted from the server device 100, the process proceeds to step S166, and the heartbeat receiving unit 321 receives the heartbeat signal transmitted from the server device 100. If it is determined that the process has not been performed, the process proceeds to step S164.

[Step S166]
The power control device 300 turns on the image display device 200. Specifically, the power supply unit 323 included in the power supply control device 300 restarts the power cut off to the video display device 200 connected to the second power supply output unit 360.

By performing the processing as described above, a failure occurs in the video application 140, and in order to recover from the failure, the server device 100 is not cold-started or restarted, but the video application 140 is restarted for recovery. If you can try and cannot recover by just restarting the video application 140, you can recover the digital signage system 1000 from the failure by cold start from the shutdown process of the server device 100 or the restart process of the server device 100. it can.

10, 40 device 100 server device 110 communication unit 120 server control unit 121 heartbeat transmission unit 122 PING response unit 130 monitoring recovery unit 131 video application monitoring unit 132 heartbeat stop command unit 133 shutdown execution unit 134 server restart execution unit 135 application Reboot execution unit 140 Video application 150 Display information output unit 200 Video display device 300 Power control device 310 Power supply unit 320 Power control unit 321 Heartbeat receiver 322 PING transmitter / receiver 323 Power supply unit 324 Magic packet transmitter 330 Communication unit 340 Information storage Unit 350 1st power output unit 360 2nd power output unit 400 Network 1000 Digital signage system P External power supply

Claims (9)

It is equipped with a server device on which an application operates and an interlocking device that operates based on information provided by the server device, and receives a heartbeat signal for confirming the operation of the server device to check the operating status of the server device. In the disaster recovery system
A heartbeat stop means for detecting an abnormality in the application and stopping the heartbeat signal,
A server device termination means that detects the stop of the heartbeat signal and terminates the server device, and
With application monitoring means and
A server power control means that detects the end of the server device, cuts off the power supplied to the server device, and supplies the power again.
A server device remote start means for starting the server device from the network on which the heartbeat signal is communicated, and
Power supply control means and
A disaster recovery system characterized by being equipped with. The power supply control means
An interlocking device termination means that detects an abnormality in the application and terminates the interlocking device,
The failure recovery system according to claim 1, further comprising. The interlocking device is
Being a video display device,
2. The failure recovery system according to claim 2. Interlocking device termination means
That the power supplied to the interlocking device is cut off.
2. The failure recovery system according to claim 2. The interlocking device power control means
Terminating the interlocking device with the communication protocol via the network,
2. The failure recovery system according to claim 2. Server device termination means
Automatically restarting the server device,
The failure recovery system according to claim 1. Application restart means for restarting the application,
The failure recovery system according to claim 1, further comprising. A server device on which an application operates and an interlocking device that operates based on information provided by the server device are provided, and a heartbeat signal for confirming the operation of the server device is received to check the operating status of the server device. In the disaster recovery method
Application monitoring means
A step in which the heartbeat stop means detects an abnormality in the application and stops the heartbeat signal.
The server device termination means includes a step of detecting the stop of the heartbeat signal and terminating the server device.
Power control means
The server power control means
A step of detecting the end of the server device, shutting off the power supplied to the server device, and resupplying the power.
A step in which the server device remote activation means activates the server device from the network on which the heartbeat signal is communicated.
A disaster recovery method characterized by providing. A server device on which an application operates and an interlocking device that operates based on information provided by the server device are provided, and a heartbeat signal for confirming the operation of the server device is received to check the operating status of the server device. In the disaster recovery program
Computer,
An application monitoring means including a heartbeat stop means for detecting an abnormality in the application and stopping the heartbeat signal, and a server device termination means for detecting the stop of the heartbeat signal and terminating the server device.
A server power control means that detects the end of the server device and cuts off and resupplys the power supplied to the server device, and remotely starts the server device that starts the server device from the network on which the heartbeat signal is communicated. Power control means, including means
A disaster recovery program characterized by functioning as.