JPH0553695A - No interruption electric power unit interface - Google Patents

Abstract

PURPOSE:To inform the generation of a service interruption from a no interruption electric power unit to a computer without using the I/O port of the computer. CONSTITUTION:A no-interruption electric power unit 2 incorporates a signal synthesizing circuit 14 synthesizing a signal detecting service interruption to be generated from the power supply output and a control circuit 8 at the service interruption. The no-interruption electric power supply output with the synthesized service interruption detection signal is sent to a computer 1. The computer 1 incorporates a signal separator circuit 15 among the service interruption power supply output from the no-interruption electric power supply 2, and the separated service interruption detection signal is sent to a main circuit 12 of the computer 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an uninterruptible power supply interface for outputting a power failure detection signal to a computer main body when a power supply source for the computer main body has a power failure.

[0002]

2. Description of the Related Art Generally, an uninterruptible power supply which constitutes a part of an uninterruptible power supply interface transmits a power failure detection signal from the uninterruptible power supply to the computer side at the time of power failure by RS232C.
The computer which receives the power failure detection signal by sending it through the input / output port such as the above, writes the data currently in use in a storage device such as a hard disk device, and takes measures against the power failure. An example of the conventional uninterruptible power supply interface described above will be described below with reference to the drawings.

FIG. 3 shows the configuration of a conventional uninterruptible power supply interface. As shown in FIG. 3, as components, 1 is a computer main body, 2 is an uninterruptible power supply,
3 is a commercial AC 100V power supply as a power supply source for supplying power to the uninterruptible power supply, 4 is a power supply for blackout, 5 is an inverter circuit for D / A converting DC output from the power supply 4 for blackout, 6 is a power supply line A gate circuit for opening and short-circuiting, 7 is a power failure detection circuit, and 8 is a control circuit that controls the operation of the gate 6 and the inverter circuit 5 required at the time of power failure and outputs a power failure detection signal based on the power failure detection circuit 7. , 9 is a power supply line to the computer body 1, 10 is a signal line for notifying the computer body 1 of power failure detection, 11
Is a power supply circuit of the computer main body 1, 12 is a main circuit,
Reference numeral 13 is a hard disk device. The operation of the computer having the uninterruptible power supply interface configured as described above will be described below.

Normally, the commercial 100V power source 3 is directly supplied to the computer main body 1 through the gate 6. When a power failure occurs, the control circuit 8 is based on the signal from the power failure detection circuit 7.
As a result, the gate 6 is closed, the inverter 5 is instantly activated, and power is continuously supplied to the computer main body 1 from the power supply 4 for power failure. At the same time, a power failure detection signal is sent from the control circuit 8 to the computer main body 1 through the signal line 10, and the data currently in use is written into the hard disk device 13.

[0005]

However, in the above configuration, an input / output port such as RS232C is used as a means for transmitting a power failure detection signal from the uninterruptible power supply 2 to the computer main body, or a dedicated input / output port is used. It is inefficient to use the input / output port for transferring a power failure detection signal that is rarely used in a computer having a limited number of input / output ports. Further, the installation of the uninterruptible power supply requires a cable in addition to an outlet for power input, and there is a problem that the installation work is troublesome.

The present invention solves the above-mentioned conventional problems, and an object thereof is to provide an uninterruptible power supply capable of notifying the computer main body of the occurrence of a power failure without using an input / output port.

[0007]

In order to solve the above problems, the uninterruptible power supply interface of the present invention is an uninterruptible power supply interface for providing a power supply for power failure and a power failure detection signal to a computer main body by an uninterruptible power supply device,
In the uninterruptible power supply, a signal synthesis circuit that synthesizes the power failure output to the computer and the power failure detection signal, and a signal separation circuit that separates the power failure output and the power failure detection signal in the computer power It is a thing.

[0008]

The uninterruptible power supply interface of the present invention having the above-mentioned configuration combines the power output for power failure and the power failure detection signal in the uninterruptible power supply at the time of power failure, and sends them to the computer main body through the conventional power supply line. On the main unit side, it is possible to know the occurrence of a power failure by separating the power output for power failure and the power failure detection signal, and it is possible to connect the uninterruptible power supply without using the I / O port of the computer main unit. An uninterruptible power supply can be installed without compromising the expandability of a limited number of personal computers.

[0009]

Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 shows the configuration of an uninterruptible power supply interface in one embodiment of the present invention. 1 to 13 in FIG.
The description is omitted because it is the same as the content described in. Reference numeral 14 is a signal synthesizing circuit for synthesizing the power output for power failure and the power failure detection signal by a method such as superimposing and modulating, and 15 is a signal separating circuit for separating the signal combined by the signal synthesizing circuit 14. FIG. 2 shows an example of combining the power output for power failure and the power failure detection signal.
16 in FIG. 2 (a) is a waveform of the power supply output for power failure, FIG. 2 (b)
17 is a power failure detection signal from the control circuit 8, and 18 in FIG. 2C is an uninterruptible power supply output from the uninterruptible power supply 2 which is waveform-combined with the power failure power output 16 and the power failure detection signal 17.

The operation of the embodiment of the present invention configured as described above will be described below with reference to FIGS. 1 and 2. First, the operation when a power failure occurs will be described with reference to FIG. When a power failure occurs, the control circuit 8 switches from the commercial AC 100V power supply to the power failure power supply 4 as in the conventional example. On the other hand, unlike the conventional example, the power failure detection signal 17 output from the control circuit 8 is sent to the signal synthesizing circuit 14, and the power failure power output 16 and the power failure detection signal 17 are synthesized, and the computer main body 1 through the power supply line 9. Sent to. On the computer main body 1 side, the signal separation circuit 15 separates the power failure output 16 and the power failure detection signal 17 and sends the power failure detection signal 17 to the main circuit 12 to recognize the occurrence of the power failure, and the hard disk of the data currently in use. The writing process to the device 13 is performed, and the loss of important data can be prevented.

An example of combining and separating the power failure power output 16 and the power failure detection signal 17 will be described with reference to FIG. A power failure detection signal 17 from the control circuit 8 when a power failure occurs is sent to the signal synthesizing circuit 14, and a power failure detection signal 1 is output to the power failure power output 16.
After superimposing 7 to obtain the uninterruptible power supply output 18, the power supply output to the computer main body 1 is made. In the computer main body 1, the uninterruptible power supply output 18 received from the uninterruptible power supply 2 is supplied to the power supply output 16 for power failure by the signal separation circuit 15.
And the power failure detection signal 17 are separated and sent to the power supply circuit 11 and the main circuit 12, respectively, to notify the main circuit 12 of the power failure occurrence. At the time of a power failure, in addition to writing data to the hard disk, a warning by a power failure occurrence notification sound and a power failure occurrence notification are displayed. Although the commercial 100V power source and the power source for blackout have been described as alternating current, needless to say, the same effect can be obtained by direct current.

[0012]

As is apparent from the above description, the uninterruptible power supply interface of the present invention has a power synthesizing circuit for a power failure output signal to the computer main body and a power failure detection signal in the uninterruptible power supply, and a power failure in the computer main body. By providing the circuit for separating the power supply output for power supply and the power failure detection signal, the uninterruptible power supply can be easily attached without impairing the expandability of the computer.

[Brief description of drawings]

FIG. 1 is a schematic block diagram of an uninterruptible power supply using an uninterruptible power supply interface and a personal computer main body according to an embodiment of the present invention.

2A to 2C are signal synthesis waveform diagrams for explaining the embodiment.

FIG. 3 is a schematic block diagram of a computer using a conventional uninterruptible power supply interface.

[Explanation of symbols]

 1 Computer Main Body 2 Uninterruptible Power Supply 3 Commercial 100V Power Supply (Power Supply Source) 4 Power Outage 7 Power Failure Detection Circuit 11 Power Supply Circuit 14 Signal Synthesis Circuit 15 Signal Separation Circuit

Claims (1)

[Claims] 1. A power failure detection circuit for detecting a power failure of a power supply source, a signal synthesizing circuit for synthesizing a power failure detection signal by the power failure detection circuit and an output of a power source for power failure at the time of power failure of the power source, and the signal synthesizing circuit. A signal separating circuit for separating the output of the power supply for power failure from the output of the circuit to the computer main body and the power failure detection signal, wherein the signal combining circuit is in an uninterruptible power supply, and the signal separating circuit is in the computer body. Uninterruptible power supply interface located at.