JP2024175275A - Surveillance equipment - Google Patents

Abstract

To provide a monitoring device that monitors a state of a cooling device such as a showcase connected by a network and appropriately restarts the cooling device regardless of timing of power recovery.SOLUTION: An upper control apparatus 1 that is a monitoring device includes: a power supply control circuit 2 that receives power supply from an external power source (an AC100 V power source) or a UPS 3 and supplies power to inside; a communication unit 6 that communicates with a plurality of control apparatuses connected by a network; a control unit 5 in which a program 44 for monitoring the plurality of control apparatuses based on measurement data including temperature received from the communication unit 6 and a monitoring process 51 for monitoring an operation state of the program 44 are operated; a power source state flag 42 showing which is a power supply source, an external power source or an UPS; and a restart flag 41 showing necessity of a restart of the upper control apparatus 1 after shutdown.SELECTED DRAWING: Figure 2

Description

The present invention relates to a monitoring device that monitors the status of cooling devices such as showcases connected via a network.

In recent years, the Hazard Analysis and Critical Control Point (HACCP) standard has made it mandatory to ensure food safety by measuring and recording the temperature of food being cooked at each stage from the arrival of raw materials to production and shipping. In order to store such temperature records, systems have been proposed that provide a communication means within the monitoring device to send collected data to a higher-level server, or that record at regular intervals (e.g., every five minutes) (see, for example, Patent Document 1).

In a system that stores (records) various measurement data on a solid state drive (SSD) or hard disk, if a power outage occurs while the measurement data is being written to the SSD, etc., file corruption may occur depending on the timing. In addition, depending on the situation, system files may be damaged, causing startup problems.

As a countermeasure for power outages like the one described above, a UPS (uninterruptible power supply) is often used. With a UPS, the system does not stop running due to the battery even after a power outage, so after various application programs are closed, the OS (operating system) shuts down and the system stops automatically. If power is subsequently restored, an external power source such as a commercial power source is supplied, so the power is automatically turned on and the OS starts up, followed by the application programs and the system goes into operation. However, if power is restored during shutdown, the power source switches from the battery to the external power source during shutdown, so after shutdown is complete and the system stops, the power may not be turned on automatically and the system may not go into operation.

As a solution to the problem of the power not being turned on automatically when power is restored during shutdown, for example, the invention described in Patent Document 2 has been proposed. Patent Document 2 describes that when the power supply from the main power source is stopped and the power supply from the power supply unit to the CPU circuit is stopped, a one-shot pulse signal is generated. It is described that when the one-shot pulse signal is input, a power-on control circuit generates a start-up signal to start the power supply to the CPU circuit, thereby restarting the circuit.

JP 2022-121909 A JP 2011-186804 A

In the case of the invention described in Patent Document 2, it is necessary to generate a one-shot pulse signal as a trigger for restarting, which requires improvements to the hardware. For this reason, it is difficult to apply this to existing devices.

Therefore, the present invention aims to enable proper restart regardless of the timing of power recovery.

The invention made to solve the above problem includes a power control unit that receives power from an external power source or an uninterruptible power supply and supplies power to the inside, a communication unit that communicates with multiple cooling devices connected via a network, a computer program that monitors the multiple cooling devices based on information including at least the temperature received from the multiple cooling devices by the communication unit, and a control unit in which a monitoring program that monitors the operating state of the computer program runs, a power status flag that indicates whether the power source is the external power source or the uninterruptible power supply, and a restart flag that indicates whether the device needs to be restarted after shutdown, and the monitoring program terminates the computer program if the power status flag indicates that power is being supplied from the uninterruptible power supply, and executes the shutdown after the computer program is terminated and sets the restart flag, and the power control unit restarts the device after the shutdown is terminated if the power status flag changes to a state indicating that power is being supplied from the external power source during the shutdown and the restart flag is set.

According to the present invention, if it indicates that the power supply from the external power source has stopped, a restart flag is set when shutting down, so the power control unit can turn on the power and restart the device by referring to the restart flag. Therefore, it is possible to restart the device appropriately regardless of the timing of power recovery.

1 is a schematic configuration diagram of a system including a monitoring device according to an embodiment of the present invention. FIG. 2 is a block diagram of a higher-level control device shown in FIG. 1 . 3 is a timing chart of an operation pattern 1 of the higher-level control device shown in FIG. 2 . 3 is a timing chart of an operation pattern 2 of the higher-level control device shown in FIG. 2 . 3 is a timing chart of an operation pattern 3 of the higher-level control device shown in FIG. 2 . 3 is a timing chart of an operation pattern 4 of the higher-level control device shown in FIG. 2 . 3 is a timing chart of an operation pattern 5 of the upper control device shown in FIG. 2 . 3 is a flowchart of a shutdown process of the higher-level control device shown in FIG. 2 . 3 is a flowchart of an operation after the end of shutdown of the higher-level control device shown in FIG. 2 .

A monitoring device according to one embodiment of the present invention will be described. Figure 1 is a schematic diagram of a monitoring system including a monitoring device according to this embodiment.

The monitoring system 100 shown in FIG. 1 includes a higher-level control device 1, a cloud server 10, control device 1_11, control device 2_12, control device n_1n, cooling device 1_21, cooling device 2_22, and cooling device n_2n.

The cloud server 10 and the higher-level control device 1 are connected by a network N1. The network N1 may be wired or wireless. The higher-level control device 1 is connected to the control devices 1_11, 2_12, and n_1n by a network N2. Although the network N2 is connected in a so-called daisy chain manner in FIG. 1, it may be connected by a bus or may be connected wirelessly.

The upper control device 1 receives and accumulates measurement data such as temperature collected by control device 1_11, control device 2_12, and control device n_1n (described later) via network N2. The accumulated measurement data is then transmitted to cloud server 10 at a predetermined timing, such as once a day. Details of the upper control device 1 will be described later.

The cloud server 10 accumulates the measurement data sent from the higher-level control device 1.

Control device 1_11 is connected to cooling device 1_21. Control device 1_11 collects measurement data such as temperature measured by cooling device 1_21 and transmits it to higher-level control device 1 via network N. Control device 2_12 and control device n_1n have the same configuration as control device 1_11, and only the cooling device to which they are connected is different.

The cooling device 1_21 is a device having a refrigeration cycle system, such as a refrigeration device or freezing device, such as a showcase. The cooling device 1_21 has a measuring means for measuring the temperature inside a storage unit such as a showcase, and outputs the measurement data measured by the measuring means to the control device 1_11. The cooling device 1_22 and the cooling device n_2n have the same configuration as the cooling device 1_21, and only the control device to which they are connected is different.

Figure 2 shows a block diagram of the upper control device 1. The control device 1 includes a power supply control circuit 2, a UPS 3, a non-volatile memory 4, a control unit 5, communication units 6 and 7, and a touch panel 8. The upper control device 1 can be configured, for example, as a panel computer for FA (Factory Automation). The control device 1 also functions as a monitoring device according to this embodiment.

The power supply control circuit 2 is supplied with an external power source (AC 100V) such as a commercial power source, which is converted to DC and then supplies a predetermined voltage to each internal block. This external power source is a power source that is external to the monitoring system 100 other than the UPS 3 and supplies power. Furthermore, in the event of a power outage, power supply is switched to that from the UPS 3 and supplied to each internal block. In other words, the power supply control circuit 2 functions as a power supply control unit that receives power from the external power source or the UPS 3 and supplies power to the inside. Furthermore, the power supply control circuit 2 sets a power supply status flag 42, which indicates whether the power source is the external power source or the UPS 3, depending on the power supply status.

UPS3 is a well-known uninterruptible power supply device, and when power is supplied from an external power source, the built-in battery is charged. On the other hand, when the external power source is interrupted, the built-in battery supplies power to the inside of the control device 1 via the power supply control circuit 2. Note that in this embodiment, the UPS3 is built into the upper control device 1, but it may also be external to the upper control device 1.

The non-volatile memory 4 stores an OS (operating system) 43, programs 44, measurement data 45, etc. As is well known, the OS 43 is software (computer programs) that performs basic functions in a computer. In this embodiment, the OS 43 runs on a microprocessor that constitutes the control unit 5, which will be described later.

The program 44 is a computer program that monitors the cooling device 1_21, etc., based on the measurement data 45 received by the communication unit 6. The program 44 runs on the microprocessor that constitutes the control unit 5, similar to the OS 43. The program 44 has the function of storing the measurement data 45 received by the communication unit 6 from the control device 1_11, etc., in the non-volatile memory 4, and causing the communication unit 7 to transmit the measurement data 45 stored in the non-volatile memory 4 to the cloud server 10. The program 44 may also notify various types of warnings, etc., based on the measurement data 45.

The measurement data 45 is data such as temperature received from the control device 1_11, etc., as described above, and is temporarily stored in the non-volatile memory 4 until it is sent to the cloud server 10.

The non-volatile memory 4 also has a restart flag 41 and a power status flag 42 set. The restart flag 41 is a flag indicating whether the host control device 1, which is the device itself, needs to be restarted after the OS 43 is shut down, and is set by a monitoring process 51, which will be described later. The power status flag 42 is a flag indicating whether the power source is an external power source or a UPS 3, and is set by the power control circuit 2.

The control unit 5 is responsible for the overall control of the higher-level control device 1. The control unit 5 has, for example, a microprocessor and a RAM (Random Access Memory). The control unit 5 executes the above-mentioned OS 43 and program 44. The control unit 5 also executes a monitoring process 51.

The monitoring process 51 is configured as part of the OS 43 or as an independent computer program. That is, the monitoring process 51 functions as a monitoring program that monitors the operating status of computer programs. The monitoring process 51 monitors the operating status of the OS 43 and the program 44, and issues instructions such as shutting down the OS 43 and terminating and restarting the program 44.

The communication unit 6 is connected to the network N2 and communicates with the control device 1_11, the control device 2_12, and the control device n_1n, that is, the multiple cooling devices connected via the network N2. In this embodiment, the control device 1_11, etc. are configured separately from the cooling device 2_21, etc., but they may be integrated, and essentially the control device 1_11, etc. can be considered as part of the cooling device 2_21, etc. The communication unit 6 receives data to be stored in the non-volatile memory 4 as the above-mentioned measurement data 45.

The communication unit 7 is connected to the network N1 and communicates with the cloud server 10. The communication unit 7 transmits the measurement data 45 and the like stored in the non-volatile memory 4 to the cloud server 10.

The touch panel 8 is a well-known input device that is overlaid on the surface of a display device such as a liquid crystal display. The touch panel 8 allows the operator to perform various operations by touching the screen with the operator's fingers, etc. The touch panel 8 may also display alarms and the like issued by the program 44. Note that instead of the touch panel 8, a keyboard or a mouse may also be provided as an input device.

Next, the operation of the higher-level control device 1 configured as described above will be described with reference to Figs. 3 to 7. Fig. 3 is a timing chart showing a case where power is restored after a shutdown is completed as operation pattern 1. Figs. 3 to 7 show the power state, power state flag 42, an application termination command, a restart flag 41, a shutdown command, and device operation.

The power supply state indicates the source of power supply to the upper control device 1, and is High for AC (external power source) and Low for battery (UPS 3). The application termination command is a command issued by the monitoring process 51 to the program 44 to terminate. The shutdown command is a command issued by the monitoring process 51 to the OS 43 to shut down. The device operation indicates the operating state of the upper control device 1, and is held in the control unit 5, for example, as a state transition of the upper control device 1.

In FIG. 3, assume that at time t11, the power supply from the external power source stops and a power outage occurs. Then, the power source state switches from the external power source to the battery (UPS3). The higher-level control device 1 continues to operate with the power supply from the UPS3. At time t11, the power supply control circuit 2 changes the power source state flag 42 from "0" to "1" in accordance with the power source state.

Next, at time t12, a predetermined time after time t11, the monitoring process 51 outputs a command to forcibly terminate program 44 ((1) in the figure). After outputting the command to forcibly terminate program 44, the monitoring process 51 waits for the process related to program 44 to end ((2) in the figure). Here, the period from time t11 to t12 is a period set as a countermeasure against momentary power interruption. Countermeasures against momentary power interruption will be explained in operation pattern 5.

In other words, when the power supply status flag 42 changes to a state indicating that power is being supplied from the UPS 3, the monitoring process 51 (monitoring program) issues an instruction to terminate the program 44 a predetermined time after the change.

Next, when the monitoring process 51 detects the end of the process related to the program 44 at time t13, it sets the restart flag 41 to "1". Then, together with setting the restart flag 41, the monitoring process 51 outputs a shutdown command and shuts down the OS 43. Then, at time t14, the device operation changes from "running" to "shutdown". Then, when the shutdown is complete, the power to the higher-level control device 1 is turned off and the device operation changes to "stopped".

That is, if the power supply status flag 42 indicates that power is being supplied from the UPS 3, the monitoring process 51 (monitoring program) terminates the program 44, and after the program 44 is terminated, it executes a shutdown and sets a restart flag.

Next, when the power supply from the external power source is restored (power restored) at time t15 after the higher-level control device 1 has been stopped, the power supply control circuit 2 changes the power supply status flag 42 from "1" to "0" and refers to the restart flag 41. Since the restart flag 41 is "1" at time t15, the power supply control circuit 2 performs a restart, turns on the power supply of the higher-level control device 1, starts up the OS 43, and sets (clears) the restart flag 41 to "0". Then, the device operation changes to "starting up".

Next, the case where power is restored during shutdown as operation pattern 2 will be described with reference to the timing chart of Figure 4. In Figure 4, times t21 to t24 are the same as times t11 to t14 in Figure 3. Then, when power is restored at time t25 during shutdown, the power supply control circuit 2 changes the power supply state flag 42 from "1" to "0". However, since shutdown is in progress at time t25 and the device operation is in a shutdown state, no restart is performed immediately and the device waits for the shutdown to finish.

Next, at time t26, when the power supply control circuit 2 detects the end of the shutdown, it refers to the restart flag 41. Since the restart flag 41 is "1" at time t26, the power supply control circuit 2 performs a restart, turns on the power of the higher-level control device 1, starts up the OS 43, and sets the restart flag 41 to "0". Then, the device operation changes to "restarting". After that, when the restart is completed, the device operation becomes "operating".

That is, if the power status flag 42 changes to a state indicating that power is being supplied from an external power source during shutdown and the restart flag 41 is set, the power control circuit 2 (power control unit) restarts the higher-level control device 1 after shutdown is completed.

Next, referring to the timing chart in Figure 5, a case where power is restored while waiting for a process to finish will be described as operation pattern 3. In Figure 5, times t31 to t32 are the same as times t11 to t12 in Figure 3. Then, when power is restored at time t33 while the process is finishing, the power supply control circuit 2 changes the power supply state flag 42 from "1" to "0". However, since the process is finishing at time t33, the process will wait for its completion.

Next, at time t34, when the monitoring process 51 detects the end of the process, it restarts the application (program 44). Then, the device status changes to "process restart", and when the restart is complete, it changes to "operating". In other words, operation pattern 3 in FIG. 5 does not involve a restart of the OS 43.

That is, if the power status flag 42 changes to a state indicating that power is being supplied from an external power source while the program 44 is terminating, the monitoring process 51 (monitoring program) restarts the program 44 after the program 44 is terminated.

Next, the case where power is restored while a forced termination command is set will be described as operation pattern 4 with reference to the timing chart of FIG. 6. In FIG. 6, times t41 to t42 are the same as times t11 to t12 in FIG. 3. Then, when power is restored at time t43 while a forced termination command is set (output), the power supply control circuit 2 changes the power supply status flag 42 from "1" to "0". Then, the monitoring process 51 restarts the program 44. In FIG. 6, since a forced termination command is being output, the program is restarted immediately without waiting for the process to end. Then, the device status changes to process restart, and when the restart is complete, it changes to operating. In other words, operation pattern 4 in FIG. 6 does not involve a restart of the OS 43 either.

Next, the case where power is restored within the instantaneous power failure countermeasure period (before the forced termination command is set) as operation pattern 5 will be described with reference to the timing chart of FIG. 7. In FIG. 7, time t51 is the same as time t11 in FIG. 3. When power is restored at t52, a predetermined time before the time t51, which is within the instantaneous power failure countermeasure period, the monitoring process 51 does not output a forced termination command for the program 44 because the predetermined time has not yet elapsed. Therefore, the upper control device 1 including the program 44 continues to operate. In the case of a momentary power failure such as a momentary power failure, the external power supply is restored in an extremely short time, so there is no need to restart the program 44 or the OS 43. Therefore, the instantaneous power failure countermeasure period shown in FIG. 7 is set to prevent unnecessary restarts. The predetermined time for the instantaneous power failure countermeasure period can be, for example, about 6 seconds, but may be changed as appropriate.

In other words, if the power supply status flag 42 changes to a state indicating that power is being supplied from an external power source within a predetermined time after the power supply status flag 42 changes to a state indicating that power is being supplied from the UPS 3, the monitoring process 51 (monitoring program) does not instruct the program 44 to terminate.

Next, the shutdown process of the higher-level control device 1 having the above-described configuration will be described with reference to the flowcharts in Figures 8 and 9.

First, the monitoring process 51 determines whether the power supply status flag 42 indicates an AC power supply (external power supply) (step S1). If the result of the determination in step S1 is that the power supply is an AC power supply (step S1: Yes), the instantaneous power interruption timer is cleared (step S2). The instantaneous power interruption timer is a timer that measures a predetermined time period, which is the instantaneous power interruption countermeasure period described above, and is provided in, for example, the control unit 5 and operated by the monitoring process 51.

Next, the monitoring process 51 assigns "AC" to its own variable, the power supply status. In other words, the monitoring process 51 recognizes that power is currently being supplied from an external power source.

On the other hand, if the result of the determination in step S1 is that the power source is not an AC power source (step S1: No), the monitoring process 51 determines whether the momentary power interruption timer has timed out (UP). In other words, it determines whether a predetermined time has elapsed since the occurrence of a power outage (after the UPS 3 starts supplying power). If the result of the determination in step S4 is that the momentary power interruption timer has timed out (step S4: Yes), the monitoring process 51 assigns "UPS" to the power supply status as a confirmed power outage (step S5). In other words, the monitoring process 51 recognizes that power is currently being supplied from the UPS 3. Also, if the result of the determination in step S4 is that the momentary power interruption timer has not timed out (step S4: No), the monitoring process 51 updates the momentary power interruption timer (step S6).

Next, the monitoring process 51 refers to the power supply status and determines whether it is "UPS" (step S7). If the result of the determination in step S7 is that the power supply status is "UPS" (step S7: Yes), the monitoring process 51 notifies (instructs) the program 44 to perform a forced termination (step S8). Note that this forced termination notification is only issued once, when step S8 is executed for the first time after the power supply status changes from "AC" to "UPS". This is because this step may be executed multiple times in a loop, and therefore the forced termination notification is not issued multiple times.

Next, the monitoring process 51 determines whether all processes have been terminated (step S9). All processes are all processes related to the program 44. If the program 44 is made up of multiple processes, all of the multiple processes must be terminated when terminating the program 44, and if the program 44 is made up of multiple programs, all of the processes for each of the multiple programs must be terminated.

Next, the monitoring process 51 sets the restart flag 41 (step S10) and executes an OS shutdown command (step S11). This causes the OS 43 to shut down, and the power to the higher-level control device 1 is turned off.

On the other hand, if the result of the determination in step S7 is that the power supply status is "AC" (step S7: No), the monitoring process 51 determines whether the power supply status has just changed from "UPS" to "AC" (step S12). In step S12, it is determined whether the power supply status has just changed from "UPS" to "AC", that is, whether a power recovery has been detected.

If it is determined in step S12 that power has been restored (step S12: Yes), the monitoring process 51 restarts the program 44 (step S13). In step S13, if the process is currently terminating, it is restarted after terminating.

In step S11, an OS shutdown command is executed, and after the shutdown is completed, the flowchart in FIG. 9 is executed. First, the power supply control circuit 2 determines whether power is being supplied from an external power supply (step S21). If the result of the determination in step S21 is that power is being supplied from the UPS 3 (step S21: No), the power supply control circuit 2 determines that, for example, an operator has turned off the power or there is a power outage, and continues the shutdown state and does not start up the higher-level control device 1.

On the other hand, if the result of the determination in step S21 is that power is being supplied from an external power source (step S21: Yes), the power supply control circuit 2 determines whether the restart flag 41 is set (step S22). If the result of the determination in step S22 is that the restart flag 41 is not set (step S22: No), the power supply control circuit 2 does not restart the higher-level control device 1, assuming that, for example, an operator or the like has manually terminated the app (program 44).

Next, if the result of the determination in step S22 is that the restart flag 41 is set (step S22: Yes), the restart flag 41 is cleared (step S23), and the power is turned on to restart the OS 43 (step S24). When the OS 43 restarts, the monitoring process 51 also starts, and the application (program 44) also starts (step S25). Then, the application is transitioned to being in operation.

The operation of the above flowchart will be explained with reference to Figs. 3 to 7. In the case of Fig. 3, before a power outage, a loop of steps S1, S2, S3, S7, S12, and S1 is repeated, and during the power outage countermeasure period, a loop of steps S1, S4, S6, S7, S12, and S1 is repeated. Here, the reason for the transition from step S7 to S12 during the power outage countermeasure period is that even if the power supply status flag 42 is battery, the power supply status has not changed to UPS because step S5 has not been executed. After the power outage countermeasure period has elapsed, a loop of steps S1, S4, S5, S7, S8, S9, and S1 is repeated. When all processes are completed, steps S1, S4, S5, S7, S8, S9, S10, and S11 are executed. After the shutdown in Fig. 3, step S21 is repeated until power is restored, and after power is restored, steps S21 to S25 are executed.

In the case of Figure 4, the process up to shutdown is the same as in Figure 3. After shutdown, power has already been restored, so steps S21 to S25 are executed in sequence.

In the cases of Figures 5 and 6, the process is the same as Figure 3 up until the momentary power failure countermeasure period. Once the momentary power failure countermeasure period has elapsed, the loop of steps S1, S4, S5, S7, S8, S9, and S1 is repeated, but if power is restored during this loop, the process transitions to steps S1, S2, S3, S7, S12, S13, and S1.

In the case of Figure 7, the state before the power outage is the same as Figure 3. During the period of countermeasures against momentary power outages, the loop of steps S1, S4, S6, S7, S12, and S1 is repeated, but if power is restored during this period, the loop returns to the state before the power outage, which is steps S1, S2, S3, S7, S12, and S1.

According to this embodiment, the upper control device 1 includes a power supply control circuit 2 that receives power from an external power source or a UPS 3 and supplies power to the inside, a communication unit 6 that communicates with a plurality of control devices 1_11, etc. connected via a network N2, a program 44 that monitors the plurality of control devices 1_11, etc. based on measurement data including temperature received from the communication unit 6, and a control unit 5 in which a monitoring process 51 that monitors the operating state of the program 44 operates. Furthermore, the upper control device 1 includes a power supply status flag 42 that indicates whether the power source is an external power source or a UPS, and a restart flag 41 that indicates whether the upper control device 1 needs to be restarted after shutdown. If the power supply status flag 42 indicates that power is being supplied from the UPS 3, the monitoring process 51 ends the program 44, executes shutdown after the program 44 ends, and sets the restart flag 41. If the power supply status flag 42 changes to a state indicating that power is being supplied from an external power source during shutdown and the restart flag 41 is set, the power supply control circuit 2 restarts the upper control device 1 after shutdown ends.

By configuring the higher-level control device 1 as described above, if it indicates that the power supply from the external power source has stopped, the restart flag 41 is set when shutting down, so the power supply control circuit 2 can turn on the power and restart it by referring to the restart flag 41. Therefore, it can be restarted appropriately regardless of the timing of power recovery.

In addition, if the power status flag 42 changes to a state indicating that power is being supplied from an external power source while the program 44 is terminating, the monitoring program 51 restarts the program 44 after the program 44 is terminated. In this way, if power is restored while the program 44 is terminating, it is not necessary to perform a shutdown, and the operating state can be restored in a short time.

In addition, when the power supply status flag 42 changes to a state indicating that power is being supplied from the UPS 3, the monitoring program 51 issues an instruction to terminate the program 44 a predetermined time after the change. In this way, it is possible to determine that the power outage is not a momentary power outage, and then restart the program 44, etc.

In addition, if the power supply status flag 42 changes to a state indicating that power is being supplied from an external power source within a predetermined time after the power supply status flag 42 changes to a state indicating that power is being supplied from the UPS 3, the monitoring program 51 does not instruct the program 44 to terminate. In this way, when a momentary power interruption occurs, there is no need to restart the program 44, and the operating state can be maintained.

The present invention is not limited to the above-described embodiment. In other words, a person skilled in the art can implement the present invention by modifying it in various ways in accordance with conventional knowledge without departing from the gist of the present invention. As long as such modifications still include the configuration of the monitoring device of the present invention, they are of course included in the scope of the present invention.

1. Upper control device (monitoring device)
2 Power supply control circuit (power supply control unit)
3. UPS
4 Non-volatile memory 41 Restart flag 42 Power status flag 44 Program (computer program)
5 Control unit 51 Monitoring process 51 (monitoring program)
6 Communication unit 11 Control device (cooling device)
12 Control equipment (cooling device)
1n Control device (cooling device)
N2 Network

Claims (4)

a power supply control unit that receives power from an external power supply or an uninterruptible power supply device and supplies power to an internal portion of the device;
a communication unit that communicates with a plurality of cooling devices connected via a network;
a control unit in which a computer program for monitoring the plurality of cooling devices based on information including at least temperatures received from the plurality of cooling devices by the communication unit and a monitoring program for monitoring an operating state of the computer program run;
a power supply status flag indicating whether the power source is the external power supply or the uninterruptible power supply;
A restart flag indicating whether or not the device needs to be restarted after shutdown;
Equipped with
when the power status flag indicates that power is being supplied from the uninterruptible power supply, the monitoring program terminates the computer program, and after the computer program has terminated, executes the shutdown and sets the restart flag;
the power supply control unit, when the power supply state flag changes to a state indicating that power is being supplied from the external power supply during the shutdown and when the restart flag is set, restarts the device after the shutdown is completed.
A monitoring device comprising: The monitoring device according to claim 1, characterized in that if the power supply status flag changes to a state indicating that power is being supplied from the external power supply while the computer program is being terminated, the monitoring program restarts the computer program after the computer program is terminated. The monitoring device according to claim 2, characterized in that, when the power supply status flag changes to a state indicating that power is being supplied from the uninterruptible power supply, the monitoring program issues an instruction to terminate the computer program a predetermined time after the change. The monitoring device according to claim 3, characterized in that the monitoring program does not instruct the computer program to terminate if the power supply status flag changes to a state indicating that power is being supplied from the external power source within the predetermined time after the power supply status flag changes to a state indicating that power is being supplied from the uninterruptible power supply.

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