JPH0454508Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) This invention relates to a personal computer interface suitable for use with an uninterruptible power supply device of a personal computer or the like.

(Prior Art) Conventionally, when a computer such as a personal computer is in operation, power failures such as commercial power outages or abnormal voltage drops can destroy computer software or programs, such as data files. In order to prevent such situations, there is a trend to solve many of the above problems by interposing an uninterruptible power supply between the commercial power supply and the computer. If it is attached, there will be no problem even if a power outage occurs.

(Problem that the invention attempts to solve) However, this is not necessarily the case in the above situation.
This can be a problem when there is no operator on hand, when computers are operated unmanned late at night in an unmanned factory, or when an operator temporarily leaves his/her seat for a short period of time during normal operation. It was hot. In other words, if a power failure such as a power outage occurs while the operator is away from the computer, and the power outage continues for a relatively long time, for example, if it lasts for more than 10 minutes, even if the power outage occurs,
As the computer continues to operate normally while being backed up, problems such as exceeding the built-in battery capacity or backup limit of the uninterruptible power supply and damaging the battery of the uninterruptible power supply may occur. Ta. Also, even if the battery capacity is within the capacity, there is no effect, and battery operation may be uneconomical compared to using a commercial power source.

In view of the above, the purpose of the present invention is to create a personal computer that is programmable electronic equipment such as a personal computer, that eliminates the risk of damage to the uninterruptible power supply even under unattended operation of the computer, and that improves the economic efficiency of battery usage. The goal is to provide an interface.

(Means for Solving the Problems) The personal computer interface of the present invention includes a through circuit that directly outputs the current supplied from the uninterruptible power supply to the personal computer, etc., and a current cut-off means provided in the through circuit. a microprocessor for detecting a power outage signal, communicating with an RS232C interface and operating said current cutoff means;
It is characterized by comprising an RS232C interface that transmits and receives RS232C signals.

(Function) The personal computer interface of this invention is used by being placed and connected between the uninterruptible power supply and a computer such as a personal computer. In other words, each device is connected in the order of uninterruptible power supply → computer interface of the present invention → equipment such as a personal computer. First, to explain the case in a normal state without a power outage, the power input terminal is uninterruptible. The output terminal of the power failure detection circuit of the uninterruptible power supply is connected to the power output terminal of the power supply device, and the output terminal of the power failure detection circuit of this uninterruptible power supply device is connected to the power failure input terminal of the interface of the personal computer of the present invention. Since the interface is loaded with a program as shown in Figure 2, the current cut-off means is closed and the current is directly output to the power output terminal via the through circuit, and there is no output to the RS232C terminal. Said
The RS232C terminal is connected to a personal computer as described above, and the program shown in Figure 3 is given to this personal computer on its RAM, but since there is no output to the aforementioned RS232C terminal, power outages due to interrupts may occur. There is no notification, so the normal process shown in FIG. 4 is executed.

If a power outage occurs, the power input terminal will be in a state where there is no voltage or a voltage drop, and if there is a power outage signal at the power outage input terminal, a power outage notification will be output to the personal computer via the RS232C terminal. When a power outage is reported as described above, the program shown in FIG. 4 in a computer such as a personal computer executes emergency evacuation of the file and then closes the file. When the processing is completed, the personal computer outputs a power-down instruction via the RS232C terminal, and upon receiving this instruction, the personal computer interface of the present invention opens its built-in current cut-off means.

(Example) Next, a personal computer interface according to an embodiment of this invention will be explained with reference to the drawings.

Fig. 1 is a block diagram of a personal computer interface according to an embodiment of the present invention, Fig. 2 is a flowchart showing the algorithm of a program installed in the personal computer interface of the present invention, and Fig. 3 is used, for example, on the personal computer side. This is a flowchart showing the algorithm of the program.

In FIG. 1, reference numeral 1 denotes a power input terminal of an interface 2 of the personal computer of this invention, into which the power output of the uninterruptible power supply is input.
3 is a through circuit, in the middle of which a current cutoff means 4 such as an electromagnetic relay is provided. When the current cut-off means is closed, the input current is output as is to the power output terminal 5, but the current output terminal 5 is connected to a power input terminal such as a pan converter. Reference numeral 6 denotes a power outage signal input terminal, which is connected to a power outage signal output terminal, etc. of the uninterruptible power supply. A microprocessor 7 is operated by a power supply 8, and its memory 9 is loaded with a program based on the algorithm shown in FIG. The current cut-off means 4 is operated or controlled. In actual use, in contrast to the program shown in FIG. 2 used in the microprocessor 7, a program with an algorithm shown in FIG. 3, for example, is executed on the personal computer side.
10 is an RS232C interface, which converts the signal from parallel to serial and connects it to the RS232C terminal 11.
Input/output to. The RS232C terminal 11 is connected to an RS232C terminal of a personal computer or the like.

(Effects of the invention) The personal computer interface of this invention is configured as described above, and even if a power outage occurs in the middle of processing, such as when a file is open, the file is automatically closed and the file is After the computer is closed, a power-down instruction is received and the through circuit in the interface of the computer of this invention is cut off, allowing computers such as a personal computer to operate unattended without destroying the software. At the same time, damage to the battery can be avoided, resulting in a remarkable industrial effect.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of one embodiment of the personal computer interface of this invention, Fig. 2 is a flowchart showing the algorithm of the program installed in the interface, and Fig. 3 is the algorithm of the program executed on the personal computer etc. This is an example flowchart. In the figure, 1...Power input terminal, 3...Through circuit, 4...Current cutoff means, 5...Power output terminal, 6...Power failure signal input terminal, 7...Microprocessor, 11...RS232C terminal.

Claims (1)

[Scope of utility model registration request] In a system in which an uninterruptible power supply is installed in a personal computer, etc., an RS232C interface is provided between the uninterruptible power supply and the personal computer, and transmits and receives an RS232C signal from the personal computer.
An RS232C terminal, a through circuit that connects one end to the uninterruptible power supply and the other end to a personal computer or the like and outputs the supplied current, a current cut-off means provided in the through circuit, and a detection terminal that detects a power outage signal. and a microprocessor that controls signals from the power failure detection terminal and the RS232C interface and operates the current cut-off means.