JPH0454505Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) This invention relates to an uninterruptible power supply interface suitable for use with uninterruptible power supplies such as personal computers.

(Prior Art) Conventionally, when a power failure such as a power outage or an abnormal drop in voltage occurs while a computer such as a personal computer is in operation, computer software or programs such as data files are destroyed. In order to prevent such situations, there is a trend to install an uninterruptible power supply between the commercial power supply and the computer to solve many of the above problems. In other words, if an uninterruptible power supply is used and the operator is on duty, there will be fewer problems even if a power outage occurs.

(The problem that the invention attempts to solve) However, the above situation is not necessarily the case.
Problems may occur when the operator is not at work, when the computer is operated unattended late at night due to unattended operation, or when the 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 in charge is away from a computer such as a personal 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 goes out, the computer will continue to operate normally without being backed up, and the battery capacity of the uninterruptible power supply will eventually be exceeded, causing the uninterruptible power supply's battery to drain. There were problems such as damage to the 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, an object of the present invention is to provide an uninterruptible power supply interface that prevents damage to the uninterruptible power supply due to overdischarge even under unattended operation of a computer, and improves the economic efficiency of battery use. It is in.

(Means for solving the problem) When the uninterruptible power supply interface of the present invention receives a power outage signal from the uninterruptible power supply and detects the power outage state, the uninterruptible power supply interface of the present invention detects the power outage state via the light pen signal line. It is characterized in that it notifies an electronic device or the like having a program function, and also cuts off the current on the power line after a variable set time has elapsed from that time.

(Function) The uninterruptible power supply interface of this invention is used by being placed between the uninterruptible power supply and a computer such as a personal computer, as shown in FIG. That is, each device is connected in the order of uninterruptible power supply → uninterruptible power supply interface of the present invention → computer, and first, the time for the timer operation is set. In a normal state without a power outage, the power input terminal is connected to the power output terminal of the uninterruptible power supply, and the output terminal of the power failure detection circuit of the uninterruptible power supply and the uninterruptible power supply interface of the present invention are connected. It is connected to the Ace's power failure input terminal, but in this state, the uninterruptible power supply interface of this invention is loaded with a program as shown in Figure 2, so the current cut-off means is closed and the current does not flow through. It is output as is to the power output terminal through the circuit, and there is no output to the light pen signal line terminal. The light pen signal line terminal is connected to a personal computer, etc. as described above, and a program as shown in FIG. 4 is provided as software to this personal computer. Since there is no output, there is no power failure notification due to interruption, and therefore the normal processing shown in FIG. 4 is executed.

If there is a power outage or the like, the power input terminal will be in a state of no voltage or 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 light pen signal line 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. In this way, when the time set as described above has elapsed, the uninterruptible power supply interface of the present invention opens its built-in current cut-off means.

(Example) Next, an uninterruptible power supply interface according to an embodiment of this invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an uninterruptible power supply interface according to an embodiment of the present invention, and FIG. 2 is a flowchart showing an algorithm of a program installed in the uninterruptible power supply interface of the present invention.
FIG. 3 is a block diagram explaining the usage situation, and FIG. 4 is a flowchart showing the algorithm of the program used, for example, on the personal computer side.

1 and 3, reference numeral 1 denotes a power input terminal of an uninterruptible power supply interface 2 of the present invention, into which the power output of the uninterruptible power supply 3 is input. 4 is a through circuit, in the middle of which a current cutoff means 5 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 6, which is connected to the power input terminal of a personal computer or the like 7. Reference numeral 8 denotes a power outage signal input terminal, which is connected to a power outage signal output terminal of the uninterruptible power supply 3, etc. 9 is a microprocessor, and power supply device 1
0, and its memory 11 contains, for example, the second
A program according to the algorithm shown in the figure is installed to detect a power failure input and transmit it to the light pen signal line interface described below to operate or control the current cut-off means 5. In actual use, for example, a program with an algorithm shown in FIG. 4 is executed on the personal computer side in contrast to the program shown in FIG. 2 used in the microprocessor 9. Reference numeral 12 denotes a light pen signal line interface, which performs parallel-to-serial conversion of signals and inputs and outputs them to the light pen signal line terminal 13. The light pen signal line terminal 13 is connected to a light pen signal line terminal of a personal computer or the like 7.

(Effects of the invention) The uninterruptible power supply 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. After the file is closed, the through circuit in the uninterruptible power supply interface of the present invention is cut off, allowing computers such as personal computers to operate unattended without destroying the software and draining the battery. Damage caused by over-discharge can be avoided, and this has a significant industrial effect.

[Brief explanation of drawings]

Fig. 1 is a block diagram of one embodiment of the uninterruptible power supply interface of this invention, Fig. 2 is a flowchart showing the algorithm of the program installed in the interface, Fig. 3 is an explanatory diagram of the usage situation, FIG. 4 is a flowchart of an example of an algorithm of a program executed on a personal computer or the like. In the figure, 1... power input terminal, 4... through circuit, 5... current cut-off means, 6... power output terminal, 8... power failure signal input terminal, 9... microprocessor, 13... light pen Signal line terminal.

Claims (1)

[Scope of utility model registration request] In a system in which an electronic device with a programming function and an uninterruptible power supply are installed, a light is provided between the uninterruptible power supply and the electronic device to notify the electronic device of a power outage via a light pen signal line. A pen signal line is connected to an interface and a light pen signal line terminal, a timer that starts operating upon detection of a power failure from the uninterruptible power supply and whose set time can be varied, and a timer that starts operating upon detection of a power failure from the uninterruptible power supply and whose set time is variable, and a timer that receives current from the uninterruptible power supply after the set time of the timer setting time. An uninterruptible power supply interface comprising: current cutoff means for cutting off supply; and a microprocessor that controls the power failure detection and notification of the light pen interface, and operates the current cutoff means.