JPH09274525A - Automatic power recovery system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable restart only in the case of shut-down caused by power failure by automatically performing restart by turning on an AC power source output when the shut-down caused by power failure is discriminated at the time of power failure cancel of an uninterruptible power supply(UPS) due to the recovery of power failure. SOLUTION: A memory part 9 is provided with a UPS status word 5 for holding the state of a UPS 3. A system control means 8 is provided with a recording control means for recording the state of the UPS 3 in the UPS status word 5 and a supervisory and control means for checking the UPS status word 5 at the time of power failure recovery. When shut-down is completed, the recording control means records the state of the UPS 3 in the UPS status word 5. At the time of power failure cancel due to the recovery of power failure in the memory part 9, the UPS status word 5 is checked. When the shut-down caused by power failure is discriminated, the AC power source output is turned on through an AC output control means 6 and restart is automatically performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic power recovery system for an information processing device, and more particularly to an automatic power recovery system for an information processing system using a power supply control device having an interface with an uninterruptible power supply (UPS). Regarding start-up method.

[0002]

2. Description of the Related Art Conventionally, as this type of automatic power recovery system,
AC-I to uninterruptible power supply (UPS) at power recovery
The system was reset-started by restarting the AC (alternating current) output only upon the recovery of N (alternating current input). That is, the UPS switches its output from the main power supply to the backup battery to hold the output when a power failure occurs, and at the same time, notifies the system to which the output is supplied that the AC output of the main power supply is gone (AC OFF Signal). In response to this, the system starts the timer and starts measuring the power failure time. If the AC OFF signal recovers before this timer measures a certain time, the timer is reset and the system continues the operation before the power failure. On the other hand, when the power failure is prolonged and the power is not restored even after a lapse of a certain time, the backup battery of the UPS is discharged and the output is reduced. Therefore, the system enters the shutdown sequence and then stops.

Uninterruptible power supply (UP) as a power failure protection
As a power recovery control method for a conventional information processing device using S), for example, in Japanese Patent Laid-Open No. 3-126119,
After a power failure occurs and the shutdown sequence is started and terminated, the UPS output is stopped to prevent the backup battery from discharging, and when the power is restored thereafter, the system is automatically reset and started. A UPS configuration that enables the above has been proposed.

If a power failure occurs during system operation, UP
The S detects the stop (power failure) of the AC-IN, and when the power failure continues for a specified time or longer, the information processing apparatus shuts down the system. When the shutdown is completed, the UPS stops the AC power output to the information processing device. UPS that recognized that the power outage was recovered by the recovery of AC-IN
Restarts the AC power output to the information processing device and restarts the system. In this conventional technique, it is determined whether the system shutdown is due to a power outage or normal operation. Since it has no means, the system will start up even if the shutdown is performed by a normal operation when the power failure is restored.

[0005]

As described above, in the conventional power recovery system, when a power failure occurs during the operation of the system, the information processing device shuts down the system for data integrity. Then, the power supply control device recognizes this shutdown in the information processing device and stops the supply of AC power to the information processing device, but even if the power failure is restored, the system cannot be automatically restarted.

Therefore, when the system is closed due to a power failure, the system can be restarted even after the power failure is recovered by manually starting the system or by using the startup control by the built-in timer. , It was impossible to start the system until the start time specified by the timer.

Further, in the conventional method proposed in the above-mentioned Japanese Patent Laid-Open No. 3-126119, at the time of system startup at the time of power restoration, whether the system shutdown is due to a power failure or normal operation. Since it does not have a means to determine whether the power is restored, even if the information processing system is shut down by regular operation (in this case, it is not necessary to start the system when the power is restored), the system will start up. There is a problem that it will end up.

Therefore, the present invention has been made in view of the above circumstances, and its purpose is to determine whether the shutdown of the information processing device is a system shutdown due to a normal operation or a power failure at the time of power restoration. It is to provide an automatic power recovery system that recognizes whether it is caused by the above and restarts only when the power is shut down.

[0009]

In order to achieve the above-mentioned object, an automatic power recovery system of the present invention uses an uninterruptible power supply ("UP
UPS that receives the UPS status sent from S)
Interface means, AC output control means for controlling AC power output to the information processing apparatus, system control means for controlling the AC output control means and UPS interface means, non-volatile storage means, and the information processing apparatus A power supply control device having a host interface unit for communicating with the storage unit, a UPS status word holding the state of the UPS is provided in the storage unit, and when the system control unit completes shutdown of the information processing apparatus. Recording control means for recording the state of the UPS in the UPS status word, and monitor control means for checking the UPS status word at the time of power failure recovery, the recording control means, when the shutdown of the information processing device is completed, The UPS status word of the non-volatile storage means When the state of PS is recorded and the power failure state of the UPS is released due to the recovery of the power failure, the monitoring control means checks the UPS status word, and when it is determined that the information processing apparatus is shut down due to the power failure, the AC The AC power supply output is turned on via the output control means, and the information processing apparatus is automatically restarted.

[0010]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram for describing an embodiment of the present invention.

With reference to FIG. 1, in the power recovery system of the present invention, the power supply control device 2 connected to the uninterruptible power supply (UPS) 3 and the information processing device 1 has a power failure / low power sent from the UPS 3. UPS interface unit 4 for receiving a UPS status such as battery / fault, and AC to information processing apparatus 1
An AC output control unit 6 that performs power supply output control, a system control unit 8 that includes firmware 7 that controls the AC output control unit 6 and the UPS interface unit 4, a non-volatile memory unit 9, and a host interface unit 10, And a UPS status word 5 for holding the UPS status in the memory unit 9.

The system control unit 8 stores a control program for recording the state of the UPS 3 in the UPS status word 5 when the information processing apparatus 1 is completely shut down, and a monitoring control program for checking the UPS status word 5 when the power is restored. When the power failure state of the UPS 3 is released by recovery from the power failure, the supervisory control program checks the UPS status word 5 in the memory 9 and
Status word 5 to UPS3 at system close
It is determined whether the system is shut down due to normal operation or the system is shut down due to a power failure. If the shutdown is due to a power failure, the AC output control unit 6 is supplied with AC power. The output is controlled to be turned on, and the information processing apparatus 1 is automatically restarted.

More specifically, the memory section 9 is provided with a UPS status word 5 for recording the status of the UPS, and the firmware 7 in the system control section is provided with a status of the UPS when the output of the AC power to the information processing unit is cut off. UP of memory unit 9
It has a recording routine for recording in the S status word 5 and a monitoring routine for checking the UPS status word 5 in the memory unit 9 when the power failure state of the UPS is released due to the recovery of the power failure. After the shutdown processing due to the power failure, the recovery of the power failure is detected, and the information processing apparatus is automatically restarted. In this way, when the shutdown is due to a power failure, the power supply control apparatus automatically restarts the information processing apparatus, and therefore it is not necessary to manually restart the system after the power failure.

In order to describe the above-described embodiment of the present invention in more detail, examples of the present invention will be described below.

In this embodiment, as shown in FIG. 1, an information processing device 1 such as a computer, a power supply control device 2 connected to the information processing device 1 to control the power supply of the information processing device 1, and a power supply control device. Uninterruptible power supply (UPS) 3 connected to 2
And consisting of

The power supply control device 2 includes a UPS interface section 4, an AC output control section 6, an AC output control section 6, and
Firmware 7 for controlling the output signal of UPS3
A system control unit 8 having a memory, a non-volatile memory unit 9 for holding the UPS status word 5, and a host (HOS).
T) interface unit 10.

FIG. 2 is a flow chart for explaining the processing at the time of power failure in the embodiment of the present invention. Further, FIG. 3 is a flow chart for explaining processing at the time of power failure recovery in the embodiment of the present invention. 1, 2 and 3
The processing flow at the time of power failure and power recovery of this embodiment will be described below with reference to FIG.

Now, it is assumed that a power failure occurs during operation of the system composed of the information processing device 1, the power supply control device 2 and the UPS 3. At that time, the UPS 3 notifies the power supply control device 2 that a power failure has occurred through a power failure signal (step 21 in FIG. 2), and the power supply control device 2 notifies the information processing device 1 of the power failure through the host interface unit 10 (step 21). 22), the information processing device 1 that has detected the power outage shuts down the system.

When the system shutdown is detected due to the decrease of the AC current value flowing in the information processing apparatus 1 (step 23), the AC output control section 6 notifies the system control section 8 of the system shutdown.

Upon receiving this notification, the system control unit 8
The status signal of the UPS 3 is fetched from the PS interface unit 4, the UPS status word 5 of the memory unit 9 is updated (step 24), and the AC output control unit 6 is set to the information processing apparatus 1.
The AC output supply to the device is stopped (step 25).

When the power failure is restored and the power is restored, the power failure signal from the UPS 3 is released. UPS interface unit 4
The system control unit 8, which has been notified by the interrupt of the cancellation of the power failure signal from the computer (step 31 in FIG. 3), checks by the firmware 7 whether the system is operating (step 32). , UPS of the memory unit 9
Check status word 5 (step 33).

If the flag of the power failure signal in the UPS status word 5 is ON in the determination of step 33, it is determined that the system shutdown is due to a power failure (step 34), and the AC output control unit 6 sends the information processing apparatus 1 to the information processing apparatus 1. The AC power supply is restarted (step 35). By restarting the AC power supply, the information processing device 1 restarts the system. On the other hand, if the flag of the power failure signal is off, it is determined that the system shutdown is not due to a power failure, and the processing of restarting the AC power supply to the information processing apparatus 1 in step 35 is not performed.

In this embodiment, the nonvolatile memory unit 9
May be anything that does not lose its stored contents when the power is turned off, such as RAM (random access memory) and EEP.
It may be configured to include a ROM (electrically erasable and rewritable read-only memory), the RAM is accessed when the power is turned on, and the content of the RAM (or only the rewriting block) is written to the EEPROM when the power is turned off.

[0024]

As described above, the present invention has the following effects.

The first effect is to add a special hardware device for performing automatic restart of the system after power failure recovery, UPS status monitoring and shutdown monitoring when a shutdown due to a power failure occurs. It means that you can do it without.

In the present invention, this is because the power control device side determines whether or not the system shutdown is due to a power failure by incorporating and holding the UPS status signal at the time of AC power output interruption in the UPS status word. It depends on what I was able to judge.

The second effect of the present invention is that even if the power failure continues for a long time and the UPS battery operation is stopped, the system can be automatically restarted after the power failure is recovered.

According to the present invention, since the status word of the UPS is provided in the non-volatile memory as the status word, the AC power supply to the power supply control device stops the UPS status when the AC output is cut off. This is because it is possible to hold the status word even in the case.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is a flowchart for explaining a process at the time of a power failure in the embodiment of the present invention.

FIG. 3 is a flowchart for explaining a process at power recovery according to the embodiment of the present invention.

[Explanation of symbols]

 1 Information Processing Device 2 Power Supply Control Device 3 Uninterruptible Power Supply (UPS) 4 UPS Interface Section 5 UPS Status Word 6 AC Output Control Section 7 Firmware 8 System Control Section 9 Memory Section 10 HOST Interface Section

Claims (3)

[Claims] 1. A UPS interface means for receiving a UPS status sent from an uninterruptible power supply (referred to as "UPS"), an AC output control means for controlling an AC power output to an information processing apparatus, and the AC output control means. And a system control unit for controlling the UPS interface unit, a non-volatile memory unit, and a host interface unit for communicating with the information processing apparatus. A UPS status word for holding a state is provided, and the system control means sets the state of the UPS to the UP
A recording control means for recording in the S status word; and a monitoring control means for checking the UPS status word at the time of power failure recovery, wherein the recording control means stores the nonvolatile data when the shutdown of the information processing device is completed. UP of the memory unit of
The status of the UPS is recorded in the S status word, and when the power failure state of the UPS is released due to the recovery of the power failure, the monitoring control unit checks the UPS status word and determines that the information processing apparatus is shut down due to the power failure. At this time, the AC is output via the AC output control means.
An automatic power recovery system characterized in that the power output is turned on and the information processing apparatus is automatically restarted. 2. The automatic power recovery system according to claim 1, wherein the recording control means of the system control means and the monitoring control means are constituted by firmware. 3. A UPS status signal when a power failure signal received from an uninterruptible power supply ("UPS") is notified to the information processing apparatus and a shutdown in the information processing apparatus that has received the notification is detected. Is recorded in the nonvolatile memory unit as a UPS status word, and is controlled so as to stop the AC output supply to the information processing device. On the other hand, when the power failure signal of the UPS is released at power recovery, Check the UPS status flag to check the UP
When the S flag indicates a power failure state, it is determined that the shutdown of the information processing apparatus is due to a power failure, and the AC power supply to the information processing apparatus is restarted. Electric method.