CN100343786C - Power monitoring protection method - Google Patents

Abstract

The invention discloses a power monitoring protection method, which monitors whether the state of at least one voltage is normal and protects when the voltage has errors, and is applied to a system comprising a control unit and an input/output unit, and comprises the following steps: starting power supply monitoring protection; inputting system voltage and central processor voltage; displaying two voltage values; judging whether the system voltage value is correct or not according to the two obtained voltage values monitored at any time; sequentially judging the system voltage and the CPU voltage, if one of the system voltage and the CPU voltage exceeds a set standard value, shutting down the system and finishing power supply monitoring protection; if neither voltage exceeds the predetermined standard value, the monitoring of both voltage values is continued. The method of the invention can immediately perform effective protection to turn off the power supply when each voltage has errors, thereby avoiding the mainboard or CPU from being burnt.

Description

Power monitoring protection method

technical field

The invention relates to a protection method, in particular to a method for monitoring protection in a notebook computer or a method for monitoring and protecting a power source related to a CPU voltage.

Background technique

At present, a general notebook computer is mainly equipped with a motherboard and a heat dissipation device. The motherboard is provided with components such as a central processing unit (CPU; CPU), etc., and the heat dissipation device includes a cooling fan. When the CPU runs and heats up, the fan blows out the hot air, and the cooling device causes rapid convection to increase the heat dissipation effect. It is used to generate air convection between the interior of the notebook computer and the outside world, and can also dissipate heat for all components on the motherboard.

Although there is a cooling device in the notebook computer, however, the notebook computer does not have a power monitoring system for the system or CPU, so it is impossible to know the current voltage value of the system or CPU, and it cannot achieve effective monitoring and protection functions. .

Since the current voltage value of the system or CPU cannot be monitored and protected, if any parts on the mainboard are burned, the power supply will rise, and the CPU or the mainboard may often be burned because of this. Therefore, for the above-mentioned commonly used technical notebook computers, there is no design related power monitoring and protection system for the system or CPU. We will propose a power monitoring and protection system to monitor whether the state of at least one voltage is normal, and when the above-mentioned voltage is wrong. make protection.

Contents of the invention

The purpose of the present invention is to provide a power supply monitoring and protection method, which is applicable to a notebook computer and can monitor system or central processing unit related voltages.

Another object of the present invention is to provide a power monitoring and protection method, which can immediately provide effective protection and shut down the power supply when errors occur in various voltages, so as to prevent the motherboard or CPU from being burned.

In order to achieve the above-mentioned purpose, the power monitoring and protection method of the present invention is applied to the following power monitoring and protection system, the system includes a control unit, which monitors the voltage at any time; and an input and output unit, which learns the voltage value through the control unit , judging whether the voltage value exceeds a predetermined standard voltage value, and when the voltage value exceeds the predetermined standard voltage value, the power supply is immediately turned off, so as to achieve effective monitoring and protection.

The power monitoring protection method of the present invention comprises the following steps:

S11, start the system and start power monitoring and protection;

S12, inputting a system voltage and a central processing unit voltage by the input-output unit through the control unit;

S13, the control unit displays two voltage values;

S14, the I/O unit first judges whether the system voltage value is correct based on the two voltage values monitored at any time obtained by the control unit; if step S14 judges that the system voltage value exceeds a predetermined standard voltage value, then proceed to Step S15; if step S14 judges that the system voltage value does not exceed a predetermined standard voltage value, then go to step S16;

S15, record the voltage value exceeding the established standard at that time, and then turn off the power supply, and then go to step S17 to judge whether the system is shut down for protection;

S16, judging whether the voltage value of the central processing unit is correct; if step S16 judges that the voltage value of the central processing unit exceeds a predetermined standard voltage value, then go to step S15, record the voltage value exceeding the predetermined standard at that time, and then turn off the power supply , and then go to step S17, to judge whether the system is shut down for protection; if step S16 judges that the voltage value of the central processing unit does not exceed a predetermined standard voltage value, then go to step S17;

S17, judging whether the system is shut down for protection, if the system is shut down, go to step S15, end the power supply monitoring and protection after shutdown processing, otherwise go to step S14 and repeat the action.

In the step S12, the input-output unit inputs the system voltage or the CPU voltage through the control unit having a conversion circuit.

In the step S12, the input-output unit inputs the system voltage or the CPU voltage through the control unit having an analog-to-digital converter.

The control unit in each step is a keyboard controller.

The I/O unit in each step is a basic input/output system.

The system voltage in the step S14 is 3V voltage or 5V voltage.

The CPU voltage in the step S16 includes a CPU core voltage and a CPU input/output voltage.

Description of drawings

Below detailed content and technology of the present invention, cooperate accompanying drawing to illustrate:

Fig. 1 is the configuration diagram of the power monitoring protection system of the present invention;

Fig. 2 is a block diagram of the working flow of the power monitoring and protection system of the present invention.

Detailed ways

The power supply monitoring and protection method of the present invention is applied to the following power supply monitoring and protection system. The system includes a control unit that monitors the voltage at any time; Exceeding a predetermined standard voltage value, when the voltage value exceeds the predetermined standard voltage value, the power supply will be turned off immediately to achieve effective monitoring and protection. The control unit of the power monitoring and protection system also includes a conversion circuit, and the conversion circuit inputs the voltage. The conversion circuit can be an analog to digital converter (A/Dconverter), the control unit can be a keyboard controller (Kevboar Controller), and the input/output unit can be a basic input/output system ( basic Input output system; BIOS), the monitored voltage is the system voltage and CPU voltage, the system voltage can be 3V or 5V, and the CPU voltage can be core (core) voltage or I/O (input/output) voltage.

Fig. 1 is a configuration diagram of the power monitoring and protection system of the present invention. As shown in the figure, the control unit monitors and displays the relevant voltage of the system or CPU at any time, and the input/output unit obtains the voltage value through the control unit. When the voltage value exceeds the established standard, the power will be turned off immediately.

The control unit can be a keyboard controller (Keyboard Controller) 40, which is located between the channel and the input/output device, and includes data buffers and logic circuits to control data transfer and work of peripheral devices. The keyboard controller 40 has a conversion circuit 50, the conversion circuit can be an analog to digital converter (analog to digital converter; A/D converter), the voltage is input through the analog to digital converter and the voltage value is displayed.

The voltage can be system voltage or CPU voltage. As shown in the figure, the A/D converter inputs system 3V voltage 21 , system 5V voltage 23 , CPU core (core) voltage 25 and CPU I/O (input/output) voltage 27 .

The input/output unit can be a keyboard basic input/output system (basic input/output system; BIOS) 30, which provides the operating interface of the system; promotes the transfer of data and control commands between the system and its peripheral devices, making the operating system suitable for users .

The keyboard basic input/output system BIOS 30 learns the voltage value through the keyboard controller 40, and judges whether the voltage value exceeds a predetermined standard voltage value. When the voltage value exceeds the predetermined standard voltage value, the system power switch 29 is turned off immediately.

FIG. 2 is a block diagram of the working flow of the power monitoring and protection method of the present invention. as shown in picture 2,

First, in step S11, the system is turned on, and power monitoring and protection are started.

Then in step S12, the keyboard basic input/output system BIOS 30 inputs the relevant voltage through the analog/digital converter of the keyboard controller 40.

Next, in step S13 , each voltage value is displayed through the keyboard controller 40 . In step S14, the keyboard basic input/output system BIOS 30 judges whether the voltage values of the system 3V voltage and the 5V voltage are correct through the voltage value monitored at any time obtained by the keyboard controller 40.

If step S14 judges that the system 3V and 5V voltage values exceed a predetermined standard voltage value, then in step S15, record the voltage value exceeding the predetermined standard at that time, and then turn off the power supply, and then go to step S17 to judge whether the system is shut down for protection. If step S14 judges that the voltage values of 3V and 5V of the system do not exceed a predetermined standard voltage value, then go to step S16 to judge whether the voltage values of CPU core voltage and CPU input/output voltage are correct.

If step S16 judges that the CPU core voltage and the CPU input/output voltage value exceed a predetermined standard voltage value, then go to step S15, record the voltage value exceeding the predetermined standard at that time, and then turn off the power supply, and then go to step S17 to judge whether the system is shut down Protect.

If step S16 determines that the CPU core voltage and the CPU input/output voltage do not exceed a predetermined standard voltage value, then go to step S17. In step S17, it is judged whether the system is shut down for protection. If the system is shut down, go to step S15, and end the power supply monitoring and protection after the shutdown process, otherwise go to step S14 and repeat the action.

Because the power supply monitoring and protection system of the present invention can learn the current voltage value of the system or CPU by the keyboard basic input/output system BIOS 30, and when the voltage value exceeds the voltage value of the established standard, the power supply is turned off quickly, so it can reach The role of effective monitoring and protection.

To sum up, the present invention designs the power monitoring and protection system for a notebook computer, so that it can avoid the problem that the CPU or the motherboard is burned due to the power rising. Although the present invention has been disclosed with preferred embodiments, it is not intended to limit the present invention. Any skilled person may make some changes and modifications without departing from the spirit and scope of this creation. Therefore, the present invention The scope of protection shall be determined by the scope defined in the claims of the patent application.

Claims (7)

1. Power Supply Monitoring guard method, whether the state of monitoring at least a voltage is normal, and makes protection when mistake appears in above-mentioned voltage, is applied in the system that comprises a control module and an output/input unit, and this method may further comprise the steps:

S11, system boot, the protection of beginning Power Supply Monitoring;

S12, by described output/input unit by described control module input system voltage and central processing unit voltage;

S13, described control module shows two magnitudes of voltage;

S14, described output/input unit judges at first by resulting two magnitudes of voltage of monitoring at any time of described control module whether described system voltage value is correct; If step S14 judges described system voltage value and surpasses a set standard voltage value, then arrives step S15; If step S14 judges described system voltage value and does not surpass a set standard voltage value, then to step S16;

S15, record surpassed the magnitude of voltage of set standard at that time, and with being about to power-off, again to step S17, judged system's protection of whether shutting down;

S16 judges whether described central processing unit magnitude of voltage is correct; If step S16 judges described central processing unit magnitude of voltage and surpass a set standard voltage value, then to step S15, record surpassed the magnitude of voltage of set standard at that time, and with being about to power-off, again to step S17, judged system's protection of whether shutting down; If step S16 judges described central processing unit magnitude of voltage and does not surpass a set standard voltage value, then to step S17;

S17 judges system's protection of whether shutting down, if system's shutdown, then to step S15, shutdown is handled the back and finished the Power Supply Monitoring protection, otherwise to step S14 repetitive operation.

2, Power Supply Monitoring guard method as claimed in claim 1 is characterized in that, described step S12 is by control module input system voltage or the central processing unit voltage of described output/input unit by having a change-over circuit.

3. Power Supply Monitoring guard method as claimed in claim 2 is characterized in that, described step S12 is by control module input system voltage or the central processing unit voltage of described output/input unit by having an A/D converter.

4. Power Supply Monitoring guard method as claimed in claim 1 is characterized in that, the control module in described each step is a keyboard controller.

5, Power Supply Monitoring guard method as claimed in claim 1 is characterized in that, the output/input unit in described each step is a basic input/output.

6, Power Supply Monitoring guard method as claimed in claim 1 is characterized in that, the described system voltage among the described step S14 is 3V voltage or 5V voltage.

7, Power Supply Monitoring guard method as claimed in claim 1 is characterized in that, the described central processing unit voltage among the described step S16 comprises central processing unit core voltage and central processing unit input/output voltage.

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