JPS6129924A - Power supply interruption supervisory system of electronic computer system - Google Patents

Abstract

PURPOSE:To detect surely a fault without requiring addition and change of the hardware by raising an alarm if no power is disconnected regardless that a program issues a power interruption instruction. CONSTITUTION:An electronic computer system 10 reads an instruction to an instruction controller 12 according to various programs stored in a memory 11 and executes the processing. When the power interruption instruction is issued by the program according to the end of job, the controller 12 outputs a command of power interruption to a power supply interruption device 13, the device 13 interrupts the power 16 applied to a system 10 to stop the operation of system. If the power supply is not interrupted even after a prescribed time is elapsed due to hardware failure, an alarm instruction is issued from the program, an alarm device ringing is commanded to an alarm driver 14 by the device 12 to ring the alarm device 15.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a power-off monitoring method, and more particularly to a power-off monitoring method for an electronic computer system that performs processing according to a program stored in a memory.

[Background of the invention]

Automatic operation of computer systems is currently being studied in various ways from the viewpoint of saving labor in system operation, including reducing personnel costs for operators.

Conventionally, as a method for automatically turning off the power of a computer system, the end time of a business is set in advance in a time setting section, and on the other hand, the time signal received by a time signal receiving section is integrated, and the time signal received by a time signal receiving section is integrated and then set in the setting section. A method has been developed in which, as a result of comparison with a set value, if the end time matches, a termination signal is sent to the control unit and the power is cut off (Japanese Patent Publication No. 57-18604).
(see publication).

With this power down method, if there is a hardware failure,
Even though the program issues a power-off command or command, the power may not be turned off and power may be wasted. Depending on the type of failure, the failure may be further amplified by being powered on for a long time, and repair may occur. This may result in increased time and costs.

Conventionally, it has been possible to detect a certain degree of hardware failure using hardware hardware, but in such cases, an alarm is issued to notify the failure of power-off. However, 1. For example, it is difficult to detect failures such as welding of power relays, and new hardware must be added in order to detect them. An object of the present invention is to provide a computer power-off monitoring method that immediately terminates computer operations or detects the failure even if there is a failure in the hardware of a power supply system without adding or changing hardware.

[Summary of the invention]

The present invention provides an electronic computer system that performs processing according to a program stored in a memory, and if the program is still in an operable state even after a certain period of time has elapsed after issuing a power-off instruction or instruction, the power is turned off. It is determined that the process has not been performed normally, and processing is performed accordingly, but this conventionally required significant additions or changes to the hardware. In the present invention, even if there is a failure in the hardware of the power supply system, it can be reliably reported to the operator, etc., and the power to the computer can be turned off at the end of the work, without having to touch the hardware. We are making it possible to do so.

[Embodiments of the invention]

FIG. 1 shows an embodiment of the present invention, in which an electronic computer system 10 executes various programs stored in a memory 11 and sends commands or instructions to a command control device w.
12 and performs processing. When a program issues a power-off command upon completion of a job, the command control device 12 issues a power-off command to the power cut-off device 13, and the power cut-off device 13 uses the power supply 16 supplied to the computer system 10. disconnect and stop the operation of the system. If the power is not cut off even after a predetermined period of time due to a hardware failure, etc., an alarm command is issued from the program, and the command control device 12 issues a command to the alarm drive 14 to sound the alarm, causing an alarm. The device 15 is made to ring.

Note that the system 10 described above naturally includes various devices necessary for arithmetic processing, but these are omitted because they are not directly related to the present invention.

FIG. 2 is a flowchart showing how the present invention shown in FIG. 1 is implemented.

The system 10 starts operating when the power is turned on (step 21), and performs processing (step 22). When the processing is completed, execution of the power cutoff program 23 is started.

The power cutoff program 23 is.

First, a power cut-off command is issued (step 24), and the power cut-off device 13 cuts off the power supply 16 under the control of the command control device 12. If the elapsed time from the issuance of the power-off command is t, and the system 10 is normally powered off by time T at the latest after the power-off command is issued, then the power-off program 23 calculates the elapsed time t. Monitor step 25) and loop until T≦t (loop 26).

If normal, the power is turned off within T (step 27).
, the system IO stops operating (step 28). In this case, the loop 26 is stopped in the middle of the loop, and the power-off program 23 ends abnormally, but the power-off of the system 10 ends normally.

Furthermore, if the power is not cut off even if T≦t due to an abnormality in the power cutoff device 13, the system 10 will not stop, so the power cutoff program 23 will extract the loop 26, branch to the branch 29, and issue an alarm command. Publish (Step 30)
) Sound the alarm (step 31) and notify the alarm that the power has not been cut off. In this case, the power cutoff program 23 has been executed normally.

Powering off the system 10 means that it has ended abnormally.

In this embodiment, an alarm is used to notify the operator, etc. that the power supply is not turned off normally, but it is possible to notify other computer systems in remote locations using a communication circuit, etc. It is. Furthermore, in addition to determining the end of processing in the computer system and starting the execution of the power cutoff program, the power supply program 23 is of course executed by commands from other computer systems or control devices in remote locations using communication lines. You can also start execution. Further, in the embodiment, time monitoring is performed using program steps, but this may be performed using a hardware counter.

〔Effect of the invention〕

As explained above, according to the present invention, if the power is not turned off even though the software issues a power-off command or instruction, this can be reliably detected without requiring much addition or modification of hardware. can do.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a computer system showing an embodiment of the present invention, and FIG. 2 is a flowchart showing the procedure of the operation of the present invention. DESCRIPTION OF SYMBOLS 10... Computer system, 23... Power cutoff program, 26... Step within predetermined time. 29... Step outside the predetermined time.

Claims (1)

[Claims] (1) The system includes a memory that stores a program, an instruction control device that performs processing according to the program, and a power cutoff device that turns off the power of the system when the instruction control device executes a power cutoff instruction or instruction. In an electronic computer system consisting of a computer system, time is monitored after the issuance of the power-off command or instruction, and if the system continues to operate even after a predetermined time has elapsed, a power-off abnormality is determined. Power-off monitoring method for electronic computer systems.