JPS6210717A - Control system for electric power source of computer - Google Patents

Abstract

PURPOSE:To prevent an electric power source from repeating turning-on/off by providing a memory area to store the normal/abnormal condition of the environmental conditions at turning-on/off of the electric power source to an electric power source control device, and retrieving the memory area at turning on the electric power source by a scheduled timer. CONSTITUTION:When a control part 7 cuts an electric power source 2-1 of a main body 2 with a switch circuit 6 open, at the time of the environmental abnormality, for example, when the voltage sensor 5 abnormality and the temperature sensor 202 normality are recorded at a RAM 4, and when the recording is completed, the switch circuit 6 is opened and the electric power source is cut. In case of the electric power source cutting due to the environmental condition, namely, in case of the cutting by a schedule timer 1, a RAM is not recorded, the switch circuit 6 is opened and the electric power source is cut. Thereafter, by the schedule timer 1, the turning-on of the electric power source is indicated, and then, the control part 7 retrieves the RAM 4, and when the contents of the recording are abnormal, the cutting of the electric power source is continued, and when the abnormality is not found, the electric power source is turned on in accordance with the electric power source turning-on indication of the schedule timer 1. Thus, the repeating of the wasteful electric power source turning-on/off and the trouble of the computer generated by it can be prevented.

Description

[Detailed Description of the Invention] [Summary] A computer power control method that uses a schedule and
A power supply control device that controls the power on/off of a computer using a timer stores whether the environmental conditions are normal or abnormal when the computer is turned off, and a schedule timer that controls the power on/off of the computer. The computer is protected from abnormal environmental conditions by not turning on the power when the computer is in an abnormal state.

[Industrial application field]

The present invention relates to a computer power control method in a power control device that turns on/off the computer's power using a schedule timer.

Computers are used in fields such as communication and information processing. Powering this computer on and off is automated and includes a schedule and instructions to turn it on and off.
This is done by a power control device equipped with a timer. This power supply control device also has a function of cutting off the power when the environment of the computer, such as the power supply voltage or internal temperature, becomes abnormal.

Therefore, there is a need for power control that can appropriately turn on/off the power using a schedule/timer and turn off the power when an environmental abnormality occurs, and a computer power control method that can appropriately turn on the power when the computer's environmental status is abnormal is desired. has been done.

[Conventional technology]

The power supply of the computer is controlled by a power supply control device. This power control device has the function of cutting off the power when a sensor that detects various environmental conditions is abnormal, which is installed to protect the computer.It also has the function of turning on the power at a scheduled time, or It also has the ability to cut. Computer power is generally turned on/off using a schedule timer.

However, conventional power supply control devices control both of the above-mentioned functions separately, so if an abnormality occurs in the environment and the power is turned off, the schedule timer will issue an instruction to turn on the power. The power control device turns on the power. If the abnormal state continues, the power is turned on in response to a power-on instruction from the schedule timer, and then the power is turned off again.

Various procedures are required to turn off the power of a computer, and this procedure is related to hardware and software, and there is a problem that repeated power on/off may cause problems in the procedure. Ta.

[Problem that the invention seeks to solve]

In conventional power supply control systems, control for power on/off based on a schedule/timer and power cut off due to environmental abnormalities are controlled in separate systems, making it difficult to perform good control.

The present invention was created in view of these points, and provides a computer power supply that has a simple configuration, prohibits unnecessary power-on, does not require repeated power-on/off, and does not cause any trouble to the computer hardware. The purpose is to provide a control method.

[Means for solving problems]

The power control device is provided with a storage area for storing normal/abnormal environmental conditions when the power is turned off, and the storage area is configured to be searched when the power is turned on using a schedule timer.

[Effect]

When the schedule timer instructs the power to be turned on, the status of the storage area is checked, and if the environmental condition when the storage area is powered off is abnormal, the power is kept turned off even if the schedule timer instructs the power to be turned on. Power on/
Prevent repeated cuts.

〔Example〕

FIG. 1 shows an embodiment according to the present invention, in which a computer (
(hereinafter referred to as main body) 2 has a power source 2-1 and a sensor 2-2 for measuring the environment. This environmental measurement sensor 2-2 is a temperature sensor that measures the temperature of a printed wiring board used in the main body 2, for example. The output of this temperature sensor 2-2 is input to the power supply control device 3. Further, the power supply control device 3 also controls power supply on/off of the power supply 2-1.

The power supply control device 3 has a RAM (RAM) that serves as a storage area for storing the schedule/timer 1 and normal and abnormal environmental conditions.
random access memory) 4, voltage sensor 5, and power supply 2
-1 is comprised of a switch circuit 6 that opens and closes the power supply and a control section 7.

Note that the power supply control device 3 is powered on regardless of whether the switch circuit 6 is opened or closed.

The operation of the present invention will be explained using FIG. The order of operations is indicated by numbers in parentheses.

The control unit 7 opens the switch circuit 6 and turns on the power supply 2 of the main body 2.
-1, if there is an environmental abnormality, for example, the voltage is abnormally high and the voltage sensor 5 is used to disconnect the RA
Record in M4 that voltage sensor 5 is abnormal and temperature sensor 2-2 is normal (2). When this recording is finished, the switch circuit 6
Open it and turn off the power (3). If the power is disconnected due to environmental conditions, that is, due to schedule timer 1 (
1) Open the switch circuit 6 and turn off the power without recording in the RAM (3).

After that, when the schedule timer 1 instructs to turn on the power, the control unit 7 searches the RAM 4 (4)
. As a result of the search, if there is an abnormality in the recorded content (5), the power is continued to be turned off (6). If there is no abnormality, the power is turned on according to the power-on instruction of the schedule timer 1 (7).

In other words, when the power is turned off due to an abnormal environmental condition, the power will continue to be turned off even if the schedule/timer instructs the power to be turned on, thereby preventing unnecessary power on/off cycles. It can be prevented.

〔Effect of the invention〕

As described above, according to the present invention, with an extremely simple configuration, power control based on environmental conditions and control with a schedule/timer are unified, and unnecessary repetition of power on/off is prevented. This prevents computer failures caused by power-off, and is extremely effective in practice.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment according to the present invention, and FIG. 2 is a flowchart for explaining the present invention in detail. In the figure, 1 is a schedule timer, 2 is a computer, 2-1 is a power supply, 2-2 is a temperature sensor, 3 is a power supply controller, 4 is a RAM, and 5 is a voltage sensor.

Claims (1)

[Claims] The schedule timer (1) allows the computer (
The power control device (3) that controls the power on/off of 2) and turns off the power when the environmental conditions are abnormal includes a storage area (3) that stores the normal/abnormal state of the environmental conditions when the power is turned off.
4), wherein the storage area (4) is searched when the schedule timer (1) is instructed to turn on the power, and the power is not turned on in the event of an abnormal state. Computer power control method.