JPH07261886A - Method for recovering peripheral device at power recovery time, and central processor and peripheral device for the same - Google Patents

Abstract

PURPOSE:To shorten the time required for recovery and improve the recovery precision of the whole system by automating the recovery of each peripheral device at power recovery time. CONSTITUTION:A peripheral device 2 which enters a source voltage drop state owing to a short-time power supply input break (momentary break), etc., informs the central processor 1, equipped with an internal battery 5, of a serious alarm and also places itself in an alarm state, and when the power supply recovers, the central processor 1 refers to an alarm holding part 4 and sends an indication for resetting the alarm state to the source which has reporting the serious alarm. To restart up the peripheral device as the reporting source of the serious alarm when the power supply recovers, this alarm state needs to be reset, and there is not the necessity for a source which has reported an unserious alarm. Further, the central processor 1 sends a repowering-ON indication to a peripheral device which is powered OFF in case of a momentary break or power failure and requires repowering-ON operation when the power supply recovers thereafter.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a built-in peripheral device when an abnormality such as a power supply voltage drop or a failure of one of a plurality of fans occurs due to a power supply interruption for a short time. Notifies the central processing unit equipped with a battery of an alarm and sets itself in an alarm state (for example, an alarm flag is set). When the power input is restored, this alarm state is released and the power is turned on again. The present invention relates to a method of recovering a peripheral device at the time of power recovery in which the peripheral device is instructed to turn on the power again.

In the present specification, a short-term power input interruption is referred to as "instantaneous interruption", a long-term power input interruption is referred to as "power failure", and power input restoration is referred to as "power recovery". There is.
Also, if necessary, alarms may be severe alarms when peripheral devices are controlled to a stop state, such as power supply voltage drop, and peripheral devices may continue to operate, such as when one of multiple fans fails. Is distinguished from the corresponding mild alarm when continuously operating.

In the case of a power failure, no alarm is generated and the alarm status up to that point is erased, so that it is not necessary to release the alarm status when the peripheral device is restarted due to power recovery after a power failure.

Further, in the case of a peripheral device which is in a power-off state equivalent to disconnecting the breaker (see FIG. 10) in the event of an instantaneous power failure or power failure, the power-on instruction waiting signal is sent to the center when the power is restored thereafter. At the same time as sending it to the processing device, the device itself waits for a power-on instruction.

As described above, when power is restored, it is necessary to release the respective alarm states and to turn the power on again, and to perform these operations on a plurality of peripheral devices that may be installed at mutually distant locations. To run efficiently in a short time,
There has been a demand in the past, and the present invention meets this demand.

[0006]

2. Description of the Related Art FIG. 9 is an explanatory diagram showing an outline of power supply relations of a general electronic computer system, 10 is an electronic computer main body, 11 is a power supply control unit, 12 to 14 are power supply units of the electronic computer main body, 15 is a panel, 16 is a built-in battery, 17 is an AC input (power input) of the computer main body, 18 to 20 are peripheral devices, 21
23 to 23 are power supply units for peripheral devices, 24 to 26 are A for peripheral devices.
C input (power input) is shown.

The contents of the signals (a) to (g) are as follows: (a) ... AC input disconnection detection signal (b) ... Power supply on / off instruction signal for power supply unit 13 (c). ..Power-on / off instruction signal for power supply unit 14 (d) ... Power-on / off instruction signal for entire system at system startup / shutdown (e) ... Peripheral devices at system startup / shutdown 18 ~ 20
Power-on / off instruction signal for (f) ・ ・ ・ Status notification signal from each peripheral device 18-20 to computer main unit 10 (alarm, power-on wait signal, etc.) (g) ・ ・ ・ Peripheral device 18- The signals for displaying the notification contents from 20 to the computer body 10 are shown respectively.

Here, the power supply to the entire computer system at the time of system startup is in the following order (see FIG. 10). (1) When the breaker of the electronic computer system is turned on (power is turned on), the power supply unit 12 is started up and power is supplied to the power supply control unit 11. The power supply control unit 11 receiving this power starts operation. (2) Upon receiving the power-on instruction signal (d) from the panel 15, the power-supply control unit 11: First, through the power-on instruction signal (b), the power supply unit 13
Power is turned on. After that a1 hour has passed, power is turned on to the computer main unit 10 by turning on the power supply unit 14 via the power-on instruction signal (c). After that b1 hour has passed, Peripheral device 18 (I / O 1) is powered on via power-on instruction signal (e) .- B2 hours later, peripheral device 19 (I / O 2) is powered on via power-on instruction signal (e). Turn on the power. ・ After bn time has passed since the power was turned on to the peripheral device immediately before,
Power on the peripheral device 20 (I / O n) via the power-on instruction signal (e).

Further, the power-off of the entire computer system at the time of system termination is performed based on the power-off instruction signal (d) from the panel 15, and the power-off sequence at this time is opposite to that at the time of power-on. (See Figure 10).

When the AC input 17 is disconnected,
The power supply control unit 11 which confirms this by the AC input disconnection detection signal (a) activates the built-in battery 16, and thereafter the normal operation of the computer main body 10 is ensured within the range of the capacity of the built-in battery 16.

On the other hand, some peripheral devices have a built-in battery and others do not, and the operation status of the latter, for example, the peripheral device 18 when AC input is cut off is as follows. When the AC input is interrupted for several tens of msec or less, the capacitor of the power supply unit 21 supplies the original power to the peripheral device 18. When the AC input is interrupted for several tens of milliseconds to 100 msec, the internal circuit of the power supply unit 21 can operate, but the output voltage becomes low, so the peripheral device 18 sets itself in an alarm state and stops operating. The state is controlled and an alarm indicating this is sent to the power supply control unit 11 of the computer main body 10 as a state notification signal (f). When the AC input is interrupted for 100 msec or more, the peripheral device 18 is put into an operation stop state, and the alarm state setting for the self device and the alarm notification to the computer body are rarely executed. This is because a transition to a power outage occurs before the setting of the alarm state in is executed.

The power supply control unit 11 which has received the alarm notification from the peripheral devices 18 to 20 displays the respective contents on the panel 15, and the operator can know the setting status of the alarm state of each peripheral device by viewing the contents. .

Each peripheral device also sets itself in an alarm state and notifies the power supply control unit 11 of the alarm even when it detects an abnormality in its own fan or power supply unit, and the contents are displayed on the panel 15. To be done.

If the degree of abnormality at this time corresponds to a mild alarm, for example, one of a plurality of fans has failed, the peripheral device continues the operation up to that point while setting the alarm state. When the power fails after that, the alarm state disappears.

Then, in order to restart the peripheral device which is in the above-mentioned operation stopped state, that is, the peripheral device which is the notification source of the serious alarm, in order to restart it, first cancel each alarm state. In the past, this cancellation was performed by a person in charge who visited the installation location after confirming the peripheral device in the alarm state on the panel 15.

Also, depending on the peripheral device, the power must be turned on again at the time of restart after power recovery. In such a peripheral device, a power-on waiting signal is sent to the power control unit 11 at the time of power recovery. It will notify and wait for the power-on process of its own device.

In the power-on process, the person in charge who confirmed the power-on wait condition of each peripheral device displayed on the panel 15 based on the power-on wait signal, as in the case of releasing the alarm condition. Done by.

[0018]

As described above, the conventional
In the recovery method of peripheral devices at the time of power recovery, the alarm state, which is the target of the work, is canceled and the power is turned on again one by one, so it takes a considerable time to restart the system. There was a problem that a work error occurred and the system was not completely restarted.

This is because it is possible to control the power supply of the peripheral device by an optical cable from the computer main body, or a large-scale system in which several tens of peripheral devices are connected to the computer main body. This becomes more noticeable in systems where peripheral devices are installed in remote areas.

Therefore, according to the present invention, prior to the restart of each peripheral device due to the power recovery, the peripheral device needs to release the alarm state and execute the power-on again from the central processing unit to the corresponding peripheral device. The purpose is to reduce the time required for recovery of each peripheral device and improve the recovery accuracy of the computer system by automating the restarting process of the entire system by directly instructing.

[0021]

FIG. 1 is a diagram for explaining the principle of the present invention. In the figure, reference numeral 1 denotes a central processing unit (electronic computer main body), which is provided with a built-in battery 5 and which, when power is restored to a peripheral device, instructs a predetermined peripheral device to release an alarm state or turn on the power again. There is. 2 is a peripheral device,
The central processing unit 1 is notified of an alarm (a serious alarm when the power supply voltage drops or a minor alarm when one of multiple fans fails) or a power-on waiting signal at the time of power restoration, and the central processing unit 1 is notified. The alarm status is cleared and the power is turned on again according to the instructions from. Reference numeral 3 denotes a control unit of the central processing unit, which includes a notification source of a power re-waiting signal and a cancellation of an alarm state to a predetermined peripheral device including a notification source of a serious alarm due to power recovery of the peripheral device. It is instructed to turn on the power to a predetermined peripheral device. Reference numeral 4 denotes an alarm holding unit of the central processing unit, which stores each alarm notified from the peripheral device in association with each notification source.
Reference numeral 5 denotes a built-in battery of the central processing unit, which supplies power to the control unit 3 and the alarm holding unit 4 when the power input is cut off. Reference numeral 6 denotes a control unit of the peripheral device, which sends an alarm indicating an abnormality of its own device and a power-on waiting signal after power recovery of the own device to the central processing unit 1, and based on an instruction from the central processing unit 1. Processing such as resetting the alarm status or turning the power off and on is being executed. The power-on waiting signal is stored in the work area of the central processing unit 1 or the like. Reference numeral 7 denotes a state detection unit of the peripheral device, which detects various abnormal states occurring in the device itself, power recovery of the device itself, and the like. Reference numeral 8 denotes an alarm state setting unit, which holds the fact that an abnormality has occurred on the peripheral device side by, for example, setting an alarm flag or operating a predetermined relay sequence based on the detection of an abnormal state of the own device. There is.

Here, the recovery target of the peripheral device at the time of power recovery includes an alarm state and a power-on waiting state, and the modes of recovery processing at this time are: release of alarm state or power on again-alarm state It is roughly divided into cancellation and power-on. In the former case, only the necessary processing is performed.

Further, as described above, in order to restart the peripheral device in which the severe alarm state is set after the power is restored, it is necessary to release it first. Depending on the peripheral device, the power may be turned off, which is equivalent to disconnecting the breaker.In this peripheral device, the power must be turned on again when the power is restored. The system status is such that the setting and alarm notification to the central processing unit are not executed, and the alarm state set to the peripheral device by then disappears.

In addition, the control unit 3 of the central processing unit 1 issues an instruction for canceling the alarm state or turning on the power to each peripheral device 2 at the timing based on the alarm from each peripheral device. Timing based on turn-on waiting signal-Timing based on power recovery detection signal from each peripheral device-It is issued at the timing determined by the central processing unit side, for example, at predetermined time intervals.

An outline of the processing procedure is shown in FIG. 2 when a power supply voltage drop due to an instantaneous interruption occurs in any peripheral device, that is, when an abnormal state corresponding to a serious alarm occurs. . (11) The state detection unit 7 of the peripheral device 2 detects the power supply voltage drop of its own device. (12) The control unit 6 of the peripheral device 2 operates the alarm state setting unit 8 of its own device to set an alarm state and notifies the central processing unit 1 of a serious alarm. (13) The central processing unit 1 stores the severe alarm in the portion of the alarm holding unit 4 corresponding to the peripheral device 2-1. (14) Upon power recovery, the peripheral device 2 notifies the central processing unit 1 of a power-on waiting signal. (15) The central processing unit 1 refers to the alarm holding unit 4 when the power of the peripheral device 2 is restored and instructs the peripheral device, which is the source of the notification of the severe alarm, to release the alarm state, for example, and turns on the power again. Instruct the peripheral device, which is the notification source of the wait signal, to turn on the power again.

In the case of FIG. 2, it is premised that the peripheral device has to be turned off due to a momentary power failure or power failure and to be turned on again when the power is restored, but this need not be turned on again. The processing of (14) is unnecessary for the peripheral device.

[0027]

According to the present invention, the central processing unit is instructed to cancel the alarm condition of the peripheral device and to turn on the power to the peripheral device in order to recover the peripheral device at the time of power recovery. This is an automated process for restarting the system following power recovery.

Incidentally, it is general that a large number of peripheral devices connected to the central processing unit to form a system are mixed with those having a built-in battery and those not. However, the performance of the built-in battery is often uneven. Further, as described above, there are peripheral devices that need to be turned on again when power is restored and those that do not.

The state of each peripheral device is not uniform when a momentary interruption or a power failure occurs in the whole or a part of the system including such peripheral devices, and an alarm state due to a power supply voltage drop due to a momentary interruption or the like occurs. The operation has been set and stopped, but the power of the device itself has not been turned off (a serious alarm but not waiting for the power to be restarted). And the power to the device itself is cut off (a serious alarm and waiting for the power to be restarted) ′ An alarm condition based on a failure of a fan is set and the device continues to operate (mild Alarm state) 'Operation stopped due to a power failure, but the power to the device is not turned off (no alarm status is set and power is not waiting to be turned on again)' Based on a power failure Work is in a like turning the power off of the stop, and the self-device (the state of not setting the alarm state the voltage on again wait).

Whether or not it is necessary to release the alarm and turn on the voltage again for each of these states 'to' is shown in FIG. For example, cancellation of the alarm setting is necessary for each peripheral device in the states'and ', and unnecessary for each peripheral device in the states'-'.

However, "unnecessary" shown in FIG. 3 means that it is not necessary to cancel the alarm or turn on the voltage again. Therefore, the actual instruction contents from the central processing unit to each peripheral device will be described later. It may be in the form of releasing the alarm which is no longer needed or turning on the voltage again.

[0032]

Embodiments of the present invention will be described with reference to FIGS. FIG. 4 is an explanatory diagram showing an outline of power supply relations of the electronic computer system according to the present invention. The main differences from those shown in FIG. 9 are: The alarm to be notified to the computer main body 10 is stored in the alarm holding unit 4 in association with each notification source.-The power control unit 11 of the electronic computer main unit 10 issues an instruction signal for canceling the alarm state or turning the power on again ( e) 'Each corresponding peripheral device 18
To 20 are notified, and other components have almost the same contents as in FIG.

FIG. 5 shows a procedure for first instructing cancellation of all alarm states without considering the seriousness and minority of the alarms, and then instructing all peripheral devices to be turned on again. It is as follows.

(21) After confirming the power recovery of the peripheral device, proceed to the next step. (22) Determine whether the peripheral device (I / O n) is in the "alarm" state. If "YES", proceed to the next step.
If "NO", proceed to step (25). (23) Instruct peripheral devices (I / O n) to release the alarm state and proceed to the next step. (24) Proceed to the next step after the predetermined interval cn. (25) Perform step (22) for the next peripheral device.

By sequentially executing the processing procedure in units of steps (21) to (25) up to the peripheral device (I / O 1), the alarm is notified to all the notification sources of the severe or mild alarm. Instructed to cancel the condition.

Next, the operation of the entire system is started by instructing the power to be turned on again in order from the peripheral device (I / O 1) to the peripheral device (I / O n) with a predetermined on-interval. There is.

In this method, since it is not necessary to judge whether the alarm is severe or mild and whether or not each of the peripheral devices is in a power-on waiting state, it is necessary to control the power supply of the computer main unit and peripheral devices. The whole system including the interface becomes simple.

On the other hand, peripheral devices that are originally in a slight alarm state that do not require these instructions, or peripheral devices that are not in the power-on waiting state, are treated in the same manner as the peripheral device that is the original instruction target, and thus the system It will take time to restart.

FIG. 6 shows a procedure for instructing the resetting of all alarm states without considering the seriousness / severity of the alarms, and then instructing the power-on of only the peripheral devices waiting for the power-on again. is there.

Here, what is different from FIG. 5 is the instruction procedure for turning on the power again, and the contents thereof are as follows. (31) Determine whether the peripheral device (I / O 1) is in the power-on waiting state, that is, whether the power-on waiting signal is sent, and if “YES”, proceed to the next step, If "NO", the process proceeds to step (34). (32) Instruct the peripheral device (I / O 1) to turn on the power again,
Go to the next step. (33) After the predetermined interval b1, proceed to the next step. (34) Perform the process of step (31) for the next peripheral device.

By sequentially executing the processing procedure in steps of (31) to (34) up to the peripheral device (I / O n), only the peripheral device in the power re-waiting state The power is turned on again.

In this method, the object to be instructed to turn on the power again is selected as compared with the case of FIG. 5, so that the time required for restarting the system is shortened accordingly.

FIG. 7 shows a procedure for first instructing the peripheral device corresponding to a serious alarm to release the alarm state, and then instructing all peripheral devices to be turned on again.

Here, what is different from FIG. 5 is the instruction procedure for canceling the alarm state, and the contents thereof are as follows. (21) After confirming the power recovery of the peripheral device, proceed to the next step. (22) ′ Determine whether the peripheral device (I / O n) is in the “severe alarm” state. If “YES”, proceed to the next step. If “NO”, proceed to step (25). . (23) Instruct peripheral devices (I / O n) to release the alarm state and proceed to the next step. (24) Proceed to the next step after the predetermined interval cn. (25) The process of step (22) ′ is executed for the next peripheral device.

By sequentially executing the processing procedure in steps of (21) to (25) up to the peripheral device (I / O 1), the notification source of the serious alarm is instructed to cancel the alarm state. ing.

In this method, compared to the case of FIG. 5, since the instruction target for releasing the alarm state is limited to only the notification source of the severe alarm, the operation can be continued as it is even if the power is restored. In the case of such peripheral devices (for example, when some of the plurality of fans have failed), the processing for canceling the alarm state is not executed, and the time required to restart the system is shortened accordingly.

FIG. 8 shows a procedure for first instructing the peripheral device corresponding to the severe alarm to release the alarm state, and then instructing the peripheral device in the power-on waiting state to restart the power. The content is a combination of the instruction procedure for canceling the alarm state in FIG. 7 and the instruction procedure for power-on again in FIG.

In other words, in this method, the peripheral device to be instructed to release the alarm state and the peripheral device to be instructed to turn on the power source are limited to those that require their respective processing. The time required to restart the system is shortened as compared with any of the methods shown in FIG.

When comparing the methods of FIGS. 5 to 8, in terms of both cost and function, the order of “method of FIG. 5 → method of FIG. 6 → method of FIG. 7 → method of FIG. 8” is in order. so,
In the former case, the cost is high, and in the latter case, it is excellent.

[0050]

As described above, according to the present invention, the central processing unit can execute the alarm state cancellation and the power re-cycle required on the peripheral device side prior to the restart associated with the power recovery of each peripheral device. Directly tells peripheral devices
The restarting process of the entire system is automated, the time required for recovery of each peripheral device can be shortened, and the recovery accuracy of the computer system can be improved.

[Brief description of drawings]

FIG. 1 is a diagram illustrating the principle of the present invention.

FIG. 2 is an explanatory diagram showing an outline of a processing procedure of the present invention when a power supply voltage drop occurs due to an instantaneous interruption in an arbitrary peripheral device.

FIG. 3 is an explanatory diagram showing the necessity of canceling an alarm state and turning the power on again for each state of the peripheral device according to the present invention.

FIG. 4 is an explanatory diagram showing an outline of power supply relations of an electronic computer system according to the present invention.

FIG. 5 is an explanatory diagram showing a procedure in the case of first instructing cancellation of all alarm states and then instructing all peripheral devices to turn on power again according to the present invention.

FIG. 6 is an explanatory diagram showing the procedure of the present invention when first instructing the cancellation of all alarm states and then instructing the power-on of only the peripheral devices in the power-on standby state.

FIG. 7 is an explanatory diagram showing a procedure in the case of first instructing cancellation of only a severe alarm state and then instructing all peripheral devices to be powered on again according to the present invention.

FIG. 8 is an explanatory diagram showing a procedure in the case of first instructing cancellation of only a serious alarm state and then instructing to power on only a peripheral device in a power-on waiting state.

FIG. 9 is an explanatory diagram showing an outline of power supply relation of a general electronic computer system.

FIG. 10 is an explanatory diagram showing how power is turned on and off in a general electronic computer system.

[Explanation of symbols]

 In FIG. 1, 1 ... Central processing unit 2 ... Peripheral device 3 ... Central processing unit control unit 4 ... Alarm holding unit 5 ... Built-in battery 6 ... Peripheral device control unit 7 ... State detection unit 8 ... Alarm state setting unit

Claims (12)

[Claims] 1. When an abnormal state such as a power supply voltage drop is detected in each peripheral device, the peripheral device notifies the central processing unit having a built-in battery of an alarm and sets itself in the alarm state, and restores power. In the recovery method of the peripheral device at the time of power recovery, so as to cancel the alarm state of the peripheral device at least when the abnormal state such as the power supply voltage drop is detected when the operation of each of the peripheral devices is resumed. The central processing unit stores the alarms in association with respective notification sources, and at the time of restarting the operation, based on this, each notification source of a predetermined alarm including an alarm corresponding to the power supply voltage drop or the like. A method of recovering a peripheral device at the time of power recovery, characterized by instructing to cancel the alarm state. 2. A serious alarm corresponding to a case where the alarm controls the peripheral device to be in an inoperable state, such as the power supply voltage drop, and a failure of one of a plurality of fans. As described above, it is distinguished into a mild alarm corresponding to the case where the operating state of the peripheral device continues thereafter, and the central processing unit selects only the severe alarm as the predetermined alarm. Claim 1
Peripheral device recovery method at power recovery described. 3. When resuming operation due to power recovery, a peripheral device that is in a power recycle waiting state notifies a central processing unit equipped with a built-in battery of a power recommission waiting signal, and the central processing unit reactivates the operation. At this time, a method for recovering a peripheral device at the time of power recovery, characterized by instructing a predetermined peripheral device including the notification source of the power-on waiting signal to restart the power. 4. When resuming operation due to power recovery, a peripheral device in a power re-waiting state notifies a central processing unit equipped with a built-in battery of a power re-waiting signal, and the central processing unit reactivates the operation. 3. The method of recovering a peripheral device at the time of power recovery according to claim 1 or 2, wherein at the same time, a predetermined peripheral device including a notification source of the power-on waiting signal is instructed to power-on again. 5. The power recovery system according to claim 3, wherein the central processing unit selects only the peripheral device that has notified the power-on instruction waiting signal as the predetermined peripheral device. Peripheral device recovery method. 6. An alarm holding unit for storing a built-in battery that operates instead when power is cut off, and an alarm notified from a peripheral device that has detected an abnormal state such as a power supply voltage drop, in association with each notification source. And a control unit for instructing each notification source of a predetermined alarm including an alarm corresponding to the power supply voltage drop or the like to refer to the alarm holding unit to cancel the alarm state. Central processing unit. 7. A serious alarm corresponding to a case where the alarm controls the peripheral device to be in an inoperable state such as the power supply voltage drop and a failure of one of a plurality of fans. As described above, it is distinguished into a minor alarm corresponding to the case where the operating state of the peripheral device continues after that, and the control unit selects only the serious alarm as the predetermined alarm. The central processing unit according to claim 6. 8. At least a built-in battery, which operates instead when the power is turned off, and a control unit for instructing a predetermined peripheral device including a notification source of a power-on waiting signal to power-on again. Characteristic central processing unit. 9. The central processing unit according to claim 8, wherein the control unit selects only the peripheral device which has notified the power-on waiting signal as the predetermined peripheral device. 10. A state detection unit that detects an abnormal state such as a power supply voltage drop, an alarm state setting unit that sets its own device into an alarm state based on this detection, and notifies the central processing unit of an alarm based on this detection. In addition, a peripheral device comprising at least a control unit for canceling the alarm state based on an instruction from the central processing unit. 11. The control unit controls the alarm to include a serious alarm corresponding to a case where the peripheral device is controlled to be in an operation stop state, such as the power supply voltage drop, and a plurality of fans among the plurality of fans. 11. The peripheral device according to claim 10, wherein when the operating state of the peripheral device continues after that, such as one failure, the central processing unit is notified separately from the corresponding minor alarm. 12. A state detection unit for detecting a power recovery state of the own device, a power re-waiting signal associated with power recovery is sent to the central processing unit, and the self processing unit is notified based on an instruction from the central processing unit. A peripheral device, comprising at least a control unit for performing power-on again.