JP2953390B2 - Power control device for computer system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply control device for a computer system, and more particularly to a power supply control device for securing an operation power supply to a computer main body at the time of a power failure or trouble of a power supply.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional example. The AC voltage AC supplied from the outlet is
The DC voltage is converted into V and 12V DC voltage and input to the computer main body 51 as an operation power supply. The DC output of the power supply 52 is turned on and off by a main switch 53.

[0003]

However, in the above-mentioned conventional example, if the power is accidentally turned off during operation of the computer main body, the execution result of the application is skipped or the hard disk drive is connected. In such a case, inconveniences such as destruction of the medium and making the next reading impossible are caused. On the other hand, some models have a built-in battery and can secure operation power for a while even after the power is turned off.However, it is necessary to secure operation power for a long time until the running application ends. Was difficult. Further, there is a system in which a storage power supply (for example, UPS) for power failure measures is connected to an outlet and when a power failure occurs, an operation power supply is secured from the storage power supply.
When the power supply, which is the supply source of the operation power supply, breaks down, there is an inconvenience that its function is not sufficiently exhibited.

[0004]

SUMMARY OF THE INVENTION The object of the present invention is to improve the disadvantages of the prior art and, in particular, to maintain the processing of the running application and to terminate the processing even when an unexpected power cut or power failure occurs due to an operation error. It is an object of the present invention to provide a power-off control device that improves the reliability of a computer system by immediately turning off the power in such a case.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a power supply control unit for detecting a power-off of a computer body and switching a power supply path from an invalid path to an effective path. Have. The power control unit further includes a state determination unit that determines whether the computer is executing a program.The power control unit determines whether the computer main unit is turned off when the power of the computer is turned off based on the determination result of the state determination unit. It switches the power supply path of the effective path on condition that a program execution, then switches the supply path of the power source on condition that the computer has finished the execution of the program disables path
The state determination unit and the power supply control unit are
When mounted on a board that can be
Communication between the status judgment unit and the computer
The configuration is such that it can be performed via the option slot .

Here, the path includes a power supply. Also,
The invalid route is a route that cannot effectively supply power to the computer main body. The effective route is a route that can effectively supply power to the computer main body.

According to the present invention, the main effective path to the computer main body becomes an invalid path due to, for example, a power failure, switch-off or power supply abnormality, and when the power supply to the computer main body is cut off, the computer main body is executing a program. If there is, the power supply control unit switches the power supply path to the effective path. Thus, an operation power supply is secured in the computer main body. Thereafter, when the execution of the program ends, the power supply control unit switches the power supply path to a predetermined invalid path, and cuts off the power supply to the computer main body. Here, it is assumed that the computer main body has a function of continuing processing by consuming an internal battery or the like for a very short time after the power supply is cut off.

Further , according to the present invention, when the board provided with the state control section and the power supply control section is mounted in the option slot of the computer main body and set to the operation state, the state of the computer main body (power supply cutoff, program execution, standby state) Such)
Is obtained by the state determination unit via the option slot.

The invention according to claim 2 adopts a configuration in which an effective path for power supply is provided via an option slot. According to the present invention, when the main power supply path becomes an invalid path, the power supply control unit supplies operation power to the computer main unit from the valid path provided via the option slot.

[0010] Accordingly, the above-mentioned object is to be achieved.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, a computer main body 7 has an optional slot S for mounting an additional device.
L, and a power control board 10 as a power control device is connected to the option slot SL. The power supply control board 10 is provided with a power supply control unit 4 capable of connecting a plurality of relay contacts according to an external signal. The power control unit 4 has two input terminals A and B and four output terminals P, Q, R and S. Among them, the input terminal A is supplied with commercial AC power from the outlet 1 via the connector C. In addition, a large-capacity storage power supply (for example, UPS) is connected to the input terminal B via a connector C, and power equivalent to a commercial AC power supply is supplied from this storage power supply.

On the other hand, of the output terminals P, Q, R, and S,
The output signal lines are not connected to the two output terminals P and R, and function as power-off terminals. On the other hand, the output terminal Q is connected to the AC / DC converter 6 so that DC equivalent to the DC voltage DC generated by the power supply 52 can be supplied to the computer main body 7 through a predetermined pin of the option slot SL. I have. The output terminal S is connected to the power supply 52 via the connector C. Here, the point that DC is supplied from the power supply 52 to the computer main body 7 according to the state of the main switch 53 is the same as in the conventional example.

A switch 5 is connected to the power control unit 4 via a connector C. This switch 5
The power control unit 4 is a switch normally used for turning on / off the power of the computer main body.
The input terminals A and B are changed to the output terminals P, Q, R,
It has a function of selectively connecting to any of S. Here, the main switch 53 provided along with the power supply 52 is always turned on, and is not operated when the power is normally turned on and off.

The power control section 4 is provided with a state determination section 3 for determining the operation state of the computer main body 7. The status determination unit 3 monitors the status of the computer main body 7 via the option slot SL. There are three types of states to be determined: during program execution, during standby, and when DC supply is cut off. The state determination unit 3 determines these states by notifying a predetermined state display signal from the computer main body to the state determination unit 3 in light of the signal. The state determination unit 3 notifies the power control unit 4 of the determined state. The power supply control unit 4 has a function of selectively connecting the input terminals A and B to any of the output terminals P, Q, R and S in response to the notification.

In addition, the power control unit 4 is in a state where commercial AC power is not supplied from the outlet to the input terminal A (power failure).
, And selectively connect the input terminals A and B to any of the output terminals P, Q, R and S according to the detection result. In the present embodiment, such a power supply control unit 4, a state determination unit 3, an AC / DC converter 6, and a plurality of connectors C are configured on a single power supply control board 10, but the elements are realized as circuit patterns. You can
It may be realized as a function of a microcomputer.

Next, the operation of this embodiment will be described with reference to FIGS.

First, when the switch 5 is turned off,
The input terminal A is connected to the output terminal P, and the input terminal B is connected to the output terminal R by the power supply control unit 4 (FIG. 3).
(A)). That is, the power supply voltage is not output from the output terminals Q and S, and the computer main body 7 is stopped.

Next, when the switch 5 is turned on, the power control unit 4 detects this, and connects the input terminal A to the output terminal S (step S1 in FIG. 2, FIG. 3B). As a result, the power supply voltage (for example, 100 V) is supplied from the output terminal S to the power supply 52, and DC is supplied from the power supply 52 to the computer main body 7. Therefore, the computer main body 7 starts.

Next, the power supply controller 4 monitors whether or not the power supply to the computer 7 has been cut off based on the notification from the state determiner 3 (step S2). Here, when the power supply of the computer main body 7 is notified from the state determination unit 3, the power supply control unit 4 determines whether power is supplied to the input terminal A (step S3). As a result,
If the power is supplied to the terminal A, it is determined that the switch 5 is turned off or the power supply 52 is abnormal (including the main switch 53 is turned off) (Step S4). Judgment (Step S
9). Here, even if the power supply for operation of the computer main body 7 is cut off, the operation of the computer main body 7 and the power supply control board 10 is ensured for a short time by consuming the internal battery (not shown).

The power control unit 4 that has detected the power failure (step S9) determines whether the computer 7 is executing a program based on the notification from the state determination unit 3 (step S1).
0). As a result, if the computer main body 7 is not in a standby state, that is, when the program is not being executed, the input terminal A is connected to the output terminal P.
(FIG. 3A), and the power supply to the computer main body 7 is cut off (step S8).

On the other hand, in step S10, when the computer main body 7 determines that the program is being executed, the input terminal A is connected to the output terminal P to turn off, and the input terminal B is connected to the output terminal Q (step S11, step S11). FIG.
(C)), the power supply voltage of the storage power source 2 is supplied from the output terminal Q to AC /
Send to DC converter 6. As a result, a predetermined DC voltage DC is generated from the AC / DC converter 6, and the computer main body 7 is supplied through a predetermined pin of the option slot SL.
Operation power supply is secured.

Thereafter, when the state determining means 3 notifies that the program processing in the computer main body 7 has been completed and is in a standby state (step S12), the power supply control section 4 connects the input terminal B to the output terminal R. (Step S8, FIG. 3
(A)), the power supply to the computer main body 7 is cut off.

On the other hand, the power control unit 4 which has determined in step S3 that the switch 5 has been turned off or the power supply 52 has failed (step S4) determines whether or not the computer main body 7 is executing the program based on the notification from the state determination unit 3. Is determined (step S5). As a result, if the program is not being executed, the input terminal A is connected to the output terminal P (Step S
8, FIG. 3 (A)), the power supply to the computer body 7 is cut off.

On the other hand, if the computer main body 7 is executing the program, the input terminal A is connected to the output terminal Q (step S6, FIG. 3D). Thereby, AC
An operation power source is secured from the / DC converter 6 to the computer main body 7 via the option slot SL. Thereafter, when the state determination unit 3 notifies that the computer main body 7 has finished executing the program and is on standby (step S7), the power control unit 4 connects the input terminal A to the output terminal P (step S8). 3 (A), the power supply to the computer body 7 is cut off.

Here, the power supply for operating the computer body at the time of a power failure may be secured by connecting the input terminal B and the output terminal S.

[0026]

Since the present invention is constructed and functions as described above, according to this, the power supply control unit establishes the power supply path on condition that the computer is executing a program when the power of the computer is turned off. Switch from the invalid path to the valid path, and after the execution of the program, switch the power supply path from the connected valid path to the predetermined invalid path. By maintaining the processing of the application and immediately turning off the power when the processing is completed, the execution result of the program can be held effectively, and the hard disk and the operating system can be prevented from being destroyed. Can be improved in reliability. Also, in particular, U
When a storage power source such as a PS is included, power saving of the power source can be achieved.

In addition to the above , a state determination unit and a power supply control unit are provided on a board that can be mounted in an option slot of the computer main body, and communication between the state determination unit and the computer main body can be performed via the option slot. With this configuration, the power supply control device can be housed in the housing including the computer main body, and the system can be prevented from being enlarged.

According to the second aspect of the present invention, since the power supply effective path is provided via the option slot, it is possible to reduce the cost by preventing a situation where the power supply harness is increased. Further, it is possible to provide an unprecedented excellent power supply control device for a computer system, which can prevent the system from becoming complicated.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart showing an overall operation of the embodiment shown in FIG. 1;

3A and 3B are explanatory diagrams of the operation of the power supply control unit shown in FIG. 1; FIG. 3A shows a state where a switch is turned off, FIG. 3B shows a state where a switch is turned on, and FIG. FIG. 3D shows a state in which a power failure has occurred, and FIG. 3D shows a state in which DC is no longer output from the power supply.

FIG. 4 is a block diagram showing a conventional example.

[Explanation of symbols]

 3 status determination unit 4 power control unit 7 computer body 10 power control board (board) A, B input terminal P, Q, R, S output terminal SL option slot

Claims (2)

(57) [Claims] 1. A power supply control device for a computer system, comprising: a power supply control unit that detects a power-off of a computer main body and switches a supply path of the power supply from an invalid path to an effective path. Is provided with a state determination unit that determines whether or not the computer is executing a program, wherein the power supply control unit is executing the program when the power of the computer is turned off based on the determination result of the state determination unit. switches the supply path of the power supply enable path condition, then, are those wherein the computer is switched to disable path supply path of the power source on condition that the completion of the execution of the program, the state determination unit and The power supply control unit to the computer
Provided on a board that can be installed in the optional slot of the main unit
And between the state determination unit and the computer main body.
Communication via the option slot
Power supply control device of the computer system, characterized in that the configuration was. 2. A method according to claim 1, characterized in that arranged the effective path of the power supply via the option slot
The power supply control device as described in the above.