KR20020092603A - Back-up Power Supply of Computer System - Google Patents

Abstract

PURPOSE: An assistant power supply controlling method is provided to prevent an instant power shut-off caused by an unstable AC power or a data loss caused by a power shut-off and to supply a stable power to a computer system. CONSTITUTION: The method comprises steps of sensing a power shut-off with a microprocessor while a computer task is being executed(S10), transmitting a continuous power supply instruction to an inverter for maintaining to supply the power to the computer system in a case that a power shut-off time is less than a reference time, for example, 3-5 seconds(S20), storing data at a memory and then stopping the execution of the computer system in a case that a power shut-off time is more than a reference time(S21), stopping an actuation of the inverter, and booting the computer system by powering on the computer system if the shut-off state is released(S30), and restoring a task environment of the computer system to a state prior to the power shut-off by using a program(S40).

Description

Back-up Power Supply of Computer System

The present invention relates to a method for controlling an auxiliary power supply of a computer system, and more particularly, to prevent the work contents from being lost due to a momentary power failure or a power failure due to unstable AC power during work using a computer.

The present invention is to propose a method for controlling an auxiliary power supply of a computer system based on the patent application No. 2001-4506, "Auxiliary power supply device of a computer system" filed by the present applicant.

In general, if the power supply is not stable or the power disturbance occurs due to peripheral devices in the operating situation of the computer system, the working data is instantaneously destroyed or the output screen is distorted.

In order to solve such a problem, an uninterruptible power supply (UPS) is used.

The uninterruptible power supply uses bipolar switching in the vicinity of the zero voltage of the AC power supply in consideration of the difficulty in controlling the current due to the uncertainty of the inverter output value near the zero voltage during unipolar switching control. In order to reduce the switching frequency, it is a series-parallel power supply that enables the current control having a constant switching frequency by using unipolar switching.

The uninterruptible power supply has the advantage of allowing the operator to continue the work or to continue the work after the normal power is supplied after recharging the power supply to the computer system for a predetermined time in the event of power failure. The components are very complex, equipment is too large, battery life is short and lifespan is not only difficult to manage and maintain the components, but also increase the manufacturing cost. There is this high problem.

SUMMARY OF THE INVENTION An object of the present invention is to provide an auxiliary power supply control method for a computer system which is stable and simple while preventing work from being lost due to an instantaneous power failure or power failure due to unstable AC power during operation using a computer.

In order to achieve the above object, the auxiliary power supply control method of the computer system of the present invention includes detecting a power failure by using a microprocessor during a computer operation, and detecting the power failure state so that the microprocessor can continue to operate the computer system. The computer will not be turned off by sending a command to the inverter.If the power failure state is within a certain time, the computer will continue to supply power.If the power failure state is after a certain time, data will be stored in the computer's memory. Storing and terminating the operation of the computer, stopping the inverter operation by the program of the microprocessor, booting the computer system by turning on the computer when the power failure is released, and programing the microprocessor upon completion of booting. Operation before power failure by operation command Characterized in that the step consists of restoring to the environment.

1 is a schematic block diagram showing the structure of the present invention;

2 is a block diagram embodying FIG.

3 is a control flowchart of the present invention.

<Description of the symbols for the main parts of the drawings>

10: auxiliary power supply unit 11: power supply unit

12 converter 13 backup battery

14 Inverter 20 Computer System

21: computer 22: monitor

C: microprocessor

Figure 1 is a schematic block diagram showing the structure of the present invention, Figure 2 is a block diagram embodied in Figure 1, a hardware configuration diagram for the auxiliary power supply control method of the computer system of the present invention.

Looking at this configuration, in the computer system 20 composed of the computer 21 and the monitor 22, the AC power supply unit 11 for supplying AC power and the AC power is converted into DC power to make the DC voltage constant. A microprocessor (C) for monitoring the converter 12, the computer system 20, the input power supply and the backup battery 13 to control the backup power supply in case of power failure, and the power supplied from the converter 12. The backup battery 13 which charges and supplies power to the inverter 14 according to the command of the microprocessor C, and converts the DC voltage supplied from the backup battery 13 into an AC voltage and supplies it to the converter 12. An auxiliary power supply unit 10 composed of an inverter 14 is provided.

Based on this configuration, the control method of the present invention will be described with reference to FIG. 3 as follows.

That is, the step S10 of detecting the power failure by using the microprocessor C while the computer 21 is working, and the inverter to detect the power failure state so that the computer system 20 can continue to operate. In order to prevent the computer 21 from being turned off by transmitting a command to the computer 14, when the power failure state is within a predetermined time (for example, 3 seconds to 5 seconds), the computer 21 is continuously supplied with power. If the time of step S20 and the power failure state is after a predetermined time (for example, 5 seconds), storing the data in the memory of the computer system 20 and then terminating the operation of the computer 21 (S21), The operation of the inverter 14 is stopped by the program of the microprocessor C, and when the power failure state is released, the computer 21 is booted by turning on the power of the computer 21 (S30), and when the booting is completed, the micro Defined by the program operation instruction of the processor (C) To control the second power supply through the steps (S40) to restore the previous state of the environment.

In the present invention thus achieved, power is supplied from the power supply unit 11 to the computer 21 and the monitor 22, where AC power is directly supplied to the monitor 22 and AC to the computer 21 from the converter 12. The power is converted into DC power and supplied.

In addition, the converter 12 charges the DC voltage to the backup battery 13 by maintaining a constant DC voltage output in a state in which the main board does not overwhelm according to the control performance of the computer system 20.

At this time, the microprocessor C constantly monitors the computer system 20, the input power supply and the backup battery 13, and passes through the inverter 14 and the converter 12 from the backup battery 13 through the computer 21 at the time of power failure. And control so that power is supplied to the monitor 22.

For example, the microprocessor C normally monitors whether the power supplied from the power supply unit 11 is normally supplied to the computer 21 and the monitor 22 and the charging state of the backup battery 13 to monitor the proper state. Command and control the DC voltage charged in the backup battery 13 to be supplied to the computer 21 through the inverter 12 via the inverter 14 when the power supply is unstable and a power failure or a power failure occurs for a predetermined time. By doing so, even if the main power is not supplied from the power supply unit 11, the computer system 20 operates for a predetermined time to store the data in operation and continues the operation, or if the power failure state is maintained for a predetermined time, the data is stored and Shut down the computer, wait for normal power, and boot up to return to the final working environment. Since it is possible to continue the previous work, the work contents are prevented from disappearing due to a momentary power interruption or a constant power outage.

The auxiliary power supply control method of the computer system according to the present invention is constantly working by monitoring a power failure and a power failure state by a microprocessor and simultaneously charging the power supplied so that the charging power is supplied immediately when the power failure and power failure state. It is effective to ensure the safety of work by preventing data from being destroyed.

In addition, it is a very useful invention having the effect that the accuracy and stability of the power supply of the backup battery is improved to provide the reliability of the product.

Claims (1)

Step (S10) of detecting a power failure by using the microprocessor (C) during the operation of the computer 21, and the inverter 14 to maintain the operation of the computer system 20 by the microprocessor (C) to detect the power failure state In order not to turn off the power of the computer 21 by transmitting a command, if the time of the power failure state is within a predetermined time step of continuing to supply the power of the computer 21 (S20) and the time of the power failure state is constant In the case of later time, the operation of the inverter 14 is stopped by storing the data in the memory of the computer system 20 and terminating the operation of the computer 21 (S21) and the program of the microprocessor (C). When the power failure state is released, the computer 21 powers on the computer 21 to boot the computer system 20, and upon completion of booting, the program operation command of the microprocessor C returns to the work environment in the state before the power failure. restore The auxiliary power supply control method of the computer system, characterized in that for controlling the auxiliary power supply through the step (S40).