JPH01109417A - Power source feeding device - Google Patents

Abstract

PURPOSE:To instantaneously disconnect a power source even when a job program exists during the execution at the time of emergency by interrupting the power source by executing the interruption instruction again with a manual switch. CONSTITUTION:When a manual switch 4 is made OFF, a microprocessor 6 in a power source control device 5 informs a CPU 1 of the effect that the power source is disconnected. Since the CPU 1, when the job during the present execution exists, does not reply the effect that the power source can be disconnected, to the microprocessor 6, the feeding condition is kept as it is and the destruction of the job program is prevented. At the time of occurring emergency, when OFF is instructed by the manual switch 4 again, the microprocessor 6 controls a power source device 2 and instantaneously, the power source is disconnected. Thus, at the time of the emergency, even when the job program during the present execution exists, the power source is disconnected and an electronic computer main body can be protected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a power supply device that supplies power to a computer.

[Prior Art] Fig. 1 is a block diagram showing the configuration of this type of power supply device, and in the figure (1) is a CP of an electronic computer (not shown).
U (central processing unit), (2) is a power supply device that supplies power necessary for driving the computer.

(3) is a power plug, which takes in power to the power supply device (2) from the outside. (4) is a manual switch, which issues an instruction to connect or cut off the power supply according to the operator's operation. (5) is a power control device, and a microprocessor (6
) is built in, and when it receives an instruction to cut off the power from the manual switch (4), it issues a notification to the operating system in the CPU (1) to cut off the power, and the operating system Depending on the response, the power supply (
2) to cut off the power supply to CPU (1).

Next, the operation of the conventional power supply device will be explained. FIG. 3 shows a power supply control sequence for explaining the operation of the conventional power supply device.
It is assumed that power is supplied from the outside through the power supply device (2) from 3).

When the operator shuts off (turns off) the manual switch (4), the microprocessor (6) in the power supply control device (5) detects this instruction and drives the microprogram to run the CPU (1). When the operating system detects this notification, it searches to see if there is a currently running job program, and if the job program has finished, the micro A response is sent to the processor (6) to the effect that the power can be shut off.

Upon receiving this response, the microprocessor (6) drives a microprogram to control the power supply (2),
The power supply device (2) cuts off the power supply to the CPU (1). In addition, the microprocessor (6) does not control the power supply (2) until it receives a response from the operating system that the power can be shut off, thereby preventing the job program being executed from being destroyed. are doing.

[Problems to be Solved by the Invention] Since the conventional power supply device as described above performs the above-mentioned control, even in an emergency when there is an abnormality in the computer main body and it is necessary to immediately shut off the power, There is a problem in that if there is a job being executed, the power cannot be turned off until the job is finished.

This invention has been made to solve this problem, and is a power supply that can be immediately shut off according to the operator's instructions in an emergency when the computer is abnormal and the power needs to be shut off immediately, without impairing the conventional functions. The purpose is to obtain a power supply device.

[Means for Solving the Problems] In the power supply device according to the present invention, the power supply control device inquires of the CPU as to whether or not there is a job program currently being executed in response to a cut-off instruction from the manual switch, and determines whether there is a job program currently being executed. Even in such cases, the power supply control device controls the power supply device and shuts off the power by instructing the power supply to shut off again using the manual switch.

[Operation] In the present invention, even if there is a job program being executed, the power supply control device controls the power supply device to shut off the power by issuing another shutdown instruction using the manual switch. In an emergency when the computer is abnormal and the power needs to be shut off immediately, even if there is a job program being executed, the power can be shut off immediately according to an operator's instruction.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

The configuration of the power supply device according to the present invention can be implemented with the same configuration as the conventional power supply device, and is therefore similar to the configuration of the power supply device shown in FIG. Only part of the program is different.

Next, the operation of this invention will be explained. Figure 2 is a power supply control sequence for explaining the operation of the power supply device according to the present invention.
It is assumed that power is supplied from the outside through the power supply device (2).

Here, when the operator turns off the manual switch (4), the microprocessor (6) in the power supply control device (5) detects this instruction and runs the microprogram, thereby starting the operating system of the CPU (1). The operating system of the CPU (1) notifies the microprocessor (6) that power will be cut off if there is a job currently being executed even after receiving this notification. does not respond that the power can be shut off, so the power is kept in the supplied state, and the job program is prevented from being destroyed as before.

Unlike a normal power shutoff, in an emergency situation where an abnormality occurs in the computer main body and the power must be shut off immediately, the operator again instructs the power to be turned off using the manual switch (4). When this instruction is given again, the microprocessor (6) detects this and controls the power supply device (2) to immediately cut off the power. Therefore, in this invention, the normal power shutoff operation can be performed while preventing the destruction of the job program as in the conventional case, and in the case of an emergency when an abnormality occurs in the computer body and the power must be shut off immediately. By instructing the operator to turn it off again using the manual switch, the power can be shut off even if there are 10 grams of jobs currently being executed, thereby protecting the computer body in the event of an abnormality.

Further, in the above embodiment, the case of an electronic computer system has been described, but the present invention is not limited to this, and the same implementation as in the above embodiment can be applied to other devices having a control device for power cutoff.

[Effects of the Invention] As explained above, this invention allows the operator to receive instructions in the event of an emergency when the computer is abnormal and the power needs to be shut off immediately by simply changing the program of the microprocessor, without impairing the conventional functions. This has the effect of immediately shutting off the power and protecting the computer in the event of an abnormality.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a power supply device, FIG. 2 is a power control sequence for explaining the present invention in detail, and FIG. 3 is a power control sequence for explaining the operation of a conventional device. (1) is a cpv, (2) is a power supply device, (3) is a power plug, (4) is a manual switch, (5) is a power supply control device, (
6) is a microprocessor. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Scope of Claims] A power supply device that connects and shuts off the power supply that drives the CPU, a manual switch that allows an operator to manually instruct the connection and shutoff of the power supply, and a power supply device that connects and shuts off the power supply that drives the CPU; and a power supply control device that drives and controls the power supply device, and upon receiving a cutoff instruction from the manual switch, the power supply control device inquires of the operating system of the CPU about the presence or absence of a job program currently being executed, and checks the job program that is currently being executed. If there is no program, the power supply will be shut off by controlling the power supply unit, and if there is a job program being executed, the power will be shut off until the job program is finished, or the manual switch will turn off the power again. A power supply device characterized in that the power supply device is not controlled until the power supply device is activated.