JPH01233608A - Power failure processing system - Google Patents

Abstract

PURPOSE:To execute a power failure processing with a system itself by notifying in advance a power source disconnection to a CPU when power is not reset within a fixed time, returning from a battery action to a commercial power source action with the CPU according to a power reset notification and executing the power failure processing according to the advance notice of the power source disconnection. CONSTITUTION:When a power failure is generated, monitoring is executed with a system monitoring unit 3 for a fixed time, and when power is reset within the fixed time, a power source can be switched from a non power failure power supply 1 to a commercial power source and a CPU 4 returns to a normal action without making the power source off. On the other hand, when the power is not reset within the fixed time, a system itself executes a power failure processing not by a user himself and can normally complete. Thus, a power failure processing system to switch the power source from the non power failure power supply to the commercial power source without making the power source off when the power is reset within the fixed time and to execute the power failure processing not by the user himself but by the system can be obtained.

Description

[Detailed Description of the Invention] [Summary] A power outage processing method for a computer equipped with an uninterruptible power supply. When the power is restored within a certain period of time, the uninterruptible power supply switches to commercial power without turning off the power, and - for a certain period of time. The purpose of this system is to provide a power outage handling method in which the power outage is handled by the system itself, without depending on the user, if the power is not restored within a certain period of time. Upon notification, the system monitoring unit notifies the CPU of the commercial power supply and then monitors it for a predetermined period of time. When the power is restored within the predetermined time, it notifies the CPU of the power restoration. On the other hand, if the power is not restored within the predetermined time, the system monitoring unit The CPtJ is configured so that a power outage is notified in advance, and the CPtJ returns from battery operation to commercial power operation upon notification of power restoration, and also performs power outage processing upon advance notice of a power outage.

[Industrial Application Field] The present invention relates to a power outage processing method for a computer having an uninterruptible power supply.

In recent years, with the increasing social role of computers and the demand for high reliability for computers, methods for handling power outages during computer power outages have become important.

For this reason, an uninterruptible power supply (LJPS) has been proposed, but when using this uninterruptible power supply to handle a power outage, if the power is restored in a short period of time, the UPS must be turned off immediately without turning off the power. It is desirable to switch from commercial power to commercial power.

[Prior Art] As conventional power outage processing methods, there are, for example, the following two processing methods.

First, in one processing method, when a power outage occurs, the CPU is notified of the power outage, the CPU immediately processes the power outage, and turns off the power when the power outage processing is completed.

Next, in another processing method, when a power outage occurs, LJP
S shifts to battery operation and backs up the CPU, but CPtJ does not immediately perform power outage processing and turns off the power when the battery voltage falls below a certain value.

[Problem to be solved by the invention] However, in the former case, the CPU processes the power outage immediately after the power outage, so even if the power is restored in a short time, There was a problem that the power was turned off.

In the latter case, the UPS backs up the CPU, but there is a problem in that the CPU cannot be terminated normally unless the user himself handles the power outage during this backup.

The present invention has been made in view of such conventional problems, and when the power is restored within a certain period of time, the uninterruptible power supply is switched to commercial power without turning off the power, and the uninterruptible power supply is switched to commercial power within a certain period of time. The object of the present invention is to provide a power outage processing method in which the system handles the power outage without depending on the user himself/herself when the power is not restored.

[Means to solve the problem] FIG. 1 is a diagram explaining the principle of the present invention.

In Figure 1, 1 is an uninterruptible power supply (UPS) that switches to battery operation when the power supply 2 detects a power outage, and 3 is an uninterruptible power supply (UPS) that switches to battery operation when the power supply 2 detects a power outage. When the power is restored, the CPU
4 is a system monitoring unit that notifies the CPU 4 of the power restoration, and if the power is not restored within a predetermined time, the system monitoring unit notifies the CPU 4 that the power will be cut off; This is a power source that receives UPS power from the device 1, supplies commercial DC power to the uninterruptible power supply 1, and monitors the voltage.

[Function] In the present invention, when a power outage occurs, the system monitoring unit 3 monitors for a predetermined time, and when power is restored within the predetermined time, the uninterruptible power supply 1 can be switched to commercial power, and the power CPU 4 returns to normal operation without turning off.

On the other hand, when the power is not restored within a predetermined time, the system itself can handle the power outage without depending on the user, and the system can be terminated normally.

[Example] Embodiments of the present invention will be described below based on the drawings.

FIG. 2 is a diagram showing an apparatus for carrying out the invention.

In FIG. 2, 1 is an uninterruptible power supply (hereinafter referred to as UPS), and when a power outage occurs, UPS1 switches to battery operation and supplies UPS power to power supply 2. When the power supply 2 detects a power outage, it sends a power outage detection signal to the system monitoring unit 3, and when it detects power restoration, it sends an UP
While supplying commercial DC power to Sl, a power restoration detection signal is sent to the system monitoring unit 3.

When the system monitoring unit 3 receives the power outage detection signal,
Immediately sends an AC disconnection notification to the CPU 4 and monitors the timer for a predetermined period of time. Furthermore, if the power is not restored within a predetermined time, the CPU 4 is notified that the power will be cut off after a predetermined time, and if the power is restored within the predetermined time, a power restoration notification is sent to the CPU 4.

The CPU 4 displays on the display that it is operating on UPS power in response to the AC disconnection notification from the system monitoring unit 3, performs soft termination processing upon notice of the power disconnection, and
Instructs the system monitoring unit 3 to turn off the power. In addition, when CPtJ4 receives a power restoration notification within a predetermined time,
After power recovery is indicated on the display, normal operation resumes.

Incidentally, when the system monitoring unit 3 receives a power-off instruction from the CPU 4, it notifies the LIPS1 and the power source 2 of the power-off.

Next, a power outage processing method will be explained based on FIG.

First, the normal sequence when a power outage occurs will be explained.

When a power outage occurs in the commercial power supply, the power supply 2 detects this power outage and sends a power outage detection signal to the system monitoring unit 3, and the UPS1 shifts to battery operation. The system monitoring unit 3 receives the power failure detection signal from the power supply 2 and
4, an AC disconnection notification is sent, and the timer is monitored for a predetermined period of time (N minutes).

When the CPU 4 receives the AC disconnection notification from the system monitoring unit 3, it displays that it is operating on UPS power. On the other hand, if the power is not restored within a predetermined time, the system monitoring unit 3 notifies the CPU 4 that the power will be cut off after a predetermined time, and
U4 performs a soft termination process within 3 minutes at the maximum in response to this notice of power cutoff, and instructs UPS1 and power supply 2 via system monitoring unit 3 to turn off the power.

In this way, if power is not restored within a specified time after a power outage,
The system itself can perform power outage processing and terminate normally without depending on the user.

Note that when the power supply 2 detects power restoration after a predetermined time, the system monitoring unit 3 receives a power restoration detection signal from the power supply 2, instructs the power supply 2 and the UPS1 to turn on the power, and
tJ4 returns to normal operation.

Next, the sequence when power is restored after a power outage will be explained.

When the power supply 2 detects a power outage, the UPS1 shifts to battery operation. The power supply 2 sends a power failure detection signal to the system monitoring unit 3. The system monitoring unit 3 sends an AC disconnection notification to the CPU 4 using the power outage detection signal and also performs timer monitoring for a predetermined period of time (N minutes). is C
Sends a power restoration notification to PU4 and ends monitoring.

When the CPtJ4 receives an AC disconnection notification from the system monitoring unit 3, it displays that it is operating on UPS power, but if it receives a power restoration notification within a predetermined time, it returns to normal operation after displaying the power restoration. Further, when the power is restored, the UPS1 returns from battery operation to AC operation.

In this way, if power is restored within a predetermined time after a power outage, L
It is possible to switch from JPS power to commercial power and return to normal operation without turning off the power.

[Effects of the Invention] As explained above, according to the present invention, when a power outage occurs, monitoring is performed for a predetermined period of time, and when the power is restored during that time, the LJPS power supply is disconnected from the LJPS power supply without turning off the power. On the other hand, if the power is not restored within a predetermined period of time, the system itself can handle the power outage without relying on the user himself, and can terminate normally.

[Brief explanation of the drawing]

FIG. 1 is a diagram explaining the principle of the present invention, FIG. 2 is a diagram showing an apparatus for carrying out the invention, and FIG. 3 is a diagram explaining the operation. In the figure, 1... Uninterruptible power supply (tJPS), 2... Power source, 3... System monitoring unit, 4... CPU. Katanaa Tamari - Nari Sun and Moon Figure 1 A ζ 4 - Ro Moon Passed L3 1/1 Seven Gourds [Σ, Ga (1st Figure 2)

Claims (1)

[Claims] When a power outage is detected in the power supply (2), the system monitoring unit (3) is notified of the power outage, and based on this power outage notification, the system monitoring unit (3) notifies the CPU (4) of a commercial power outage and then monitors for a predetermined period of time. , when the power is restored within a predetermined time, the CPU (4) is notified of the power restoration; on the other hand, when the power is not restored within the predetermined time, the CPU (4) is notified that the power will be cut off, and the CPU
(4) is a power outage processing method characterized in that the battery operation returns to commercial power operation upon notification of power restoration, and power outage processing is performed upon advance notice of power outage.