CN106484022B - Mainboard overvoltage protection method and system - Google Patents
Mainboard overvoltage protection method and system Download PDFInfo
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- CN106484022B CN106484022B CN201610934557.1A CN201610934557A CN106484022B CN 106484022 B CN106484022 B CN 106484022B CN 201610934557 A CN201610934557 A CN 201610934557A CN 106484022 B CN106484022 B CN 106484022B
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000001514 detection method Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 7
- 238000012935 Averaging Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000035772 mutation Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/81—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer by operating on the power supply, e.g. enabling or disabling power-on, sleep or resume operations
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is DC
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices
- G05F1/565—Regulating voltage or current wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
- G05F1/569—Regulating voltage or current wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection
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- Electromagnetism (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Computer Security & Cryptography (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Protection Of Static Devices (AREA)
Abstract
The invention relates to a mainboard overvoltage protection method and a system, wherein the method comprises the following steps: detecting an original voltage input to a main board; comparing the original voltage with a normal working voltage range of the mainboard, and controlling the electronic equipment where the mainboard is located to enter a standby state if the original voltage is not within the normal working voltage range; in a standby state, if the original voltage is within the normal working voltage range and the time of the original voltage within the normal working voltage range is longer than a preset time period, restarting the electronic device. The method and the system can be realized through software, do not need additional hardware equipment, and can effectively protect the mainboard on the premise of reducing the system cost.
Description
Technical field
The present invention relates to technical field of electronic equipment, more particularly to a kind of mainboard method of overvoltage protection and system.
Background technology
Mainboard is one of the important component in electronic equipment.When the power supply for being input to mainboard is unstable, when voltage jump, hold
It easily leads to mainboard to burn out, to influence the normal work of electronic equipment.In order to ensure the normal work of electronic equipment, need to master
Plate is protected, that is, the voltage to inputting mainboard controls, and it is more than the normal work electricity of mainboard to prevent the voltage of input mainboard
It presses and mainboard is caused to burn out.
Some in current mainboard, which is not directed to voltage jump, the safeguard procedures for making software, causes certain areas master
The defect ratio that plate and some components are damaged because of voltage jump is higher.Some is protected by hardware realization
Function.Although can realize safeguard function to a certain extent by hardware mode, cost is higher.
Invention content
Based on this, it is necessary to be directed to the higher problem of cost, provide a kind of mainboard method of overvoltage protection and system.
A kind of mainboard method of overvoltage protection, includes the following steps：
Detection is input to the primary voltage of mainboard；
The primary voltage is compared with the normal working voltage range of the mainboard, if the primary voltage does not exist
Within the scope of the normal working voltage, the electronic equipment where controlling the mainboard enters standby mode；
In the standby state, if the primary voltage is located within the scope of the normal working voltage, and the original electricity
Time of the pressure within the scope of the normal working voltage is more than the preset period, restarts the electronic equipment.
A kind of mainboard overvoltage protection system, including：
Detection module, for detecting the primary voltage for being input to mainboard；
Control module, for the primary voltage to be compared with the normal working voltage range of the mainboard, if institute
Primary voltage is stated not within the scope of the normal working voltage, the electronic equipment where controlling the mainboard enters standby shape
State；
Restart module, is used in the standby state, if the primary voltage is located within the scope of the normal working voltage,
And the primary voltage is located at the time within the scope of the normal working voltage and is more than the preset period, restarts the electronics
Equipment.
Above-mentioned mainboard method of overvoltage protection and system, by will enter into the primary voltage of mainboard and the normal work of mainboard
It is compared as voltage range, if the primary voltage not within the scope of the normal working voltage, controls the mainboard institute
Electronic equipment enter standby mode；Also, continue to detect primary voltage in the standby state, if within the preset period
The primary voltage is always positioned within the scope of the normal working voltage, then restarts the electronic equipment, the above method and is
System can be not necessarily to additional hardware device by software realization, can effectively be carried out to mainboard under the premise of reducing system cost
Protection.
Description of the drawings
Fig. 1 is the mainboard method of overvoltage protection flow chart of one embodiment；
Fig. 2 is the structural schematic diagram of the mainboard overvoltage protection system of one embodiment.
Specific implementation mode
Technical scheme of the present invention is illustrated below in conjunction with the accompanying drawings.
As shown in Figure 1, the present invention provides a kind of mainboard method of overvoltage protection, it may include following steps：
S1, detection are input to the primary voltage of mainboard；
In this step, the mainboard can be the mainboard of computer main board, TV SKD or other electronic equipments.It is described
Primary voltage refers to the voltage that the mainboard is input to from external power supply, and in general, the numerical value of the primary voltage is larger, example
Such as, it is 220V.When detecting the primary voltage, the primary voltage can be sampled at a certain time interval, according to
Sampled data obtains the amplitude of the primary voltage.
In one embodiment, in order to cost-effective, can detect the control chip on the mainboard ADC interface (for example,
SAR mouthfuls) voltage, as the primary voltage for being input to mainboard.In this way, it is carried out without additional hardware device
Voltage detecting can effectively reduce cost.
The primary voltage is compared, if the primary voltage by S2 with the normal working voltage range of the mainboard
Not within the scope of the normal working voltage, the electronic equipment where controlling the mainboard enters standby mode；
The normal working voltage range can be denoted as [Umin, Umax], it is however generally that, as primary voltage U0Meet Umin≤U0≤
Umax, then it represents that the primary voltage is located within the scope of the normal working voltage, if U0＜ UminOr U0＞ Umax, then table
Show the primary voltage not within the scope of the normal working voltage.
This step can execute under electronic equipment open state.Assuming that using SAR mouthfuls in step S1 to described original
Voltage is detected, since much smaller than the primary voltage, (SAR mouthfuls of operating voltage is generally 3.3V to SAR mouthfuls of operating voltages
Left and right), it therefore, burns out for SAR mouthfuls, can first decay to the primary voltage in order to prevent.It can be based on the ADC interface
Maximum working voltage, the primary voltage and the normal working voltage range with multiple decay calculation, declined
Powered down pressure and decaying operating voltage range；The evanescent voltage and decaying operating voltage range are respectively less than or equal to ADC interface
The evanescent voltage is compared, if the evanescent voltage is not described by maximum working voltage with decaying operating voltage range
Within the operating voltage range that decays, the electronic equipment where controlling the mainboard enters standby mode.If the primary voltage position
Within the scope of the normal working voltage, then the electronic equipment continues to work normally.
For example, it is assumed that primary voltage is U1, the maximum value of SAR mouthfuls of operating voltage is U2, then primary voltage can decline
Subtract α times, primary voltage is made to be less than or equal to U2.Similarly, for the ease of comparing the normal working voltage of primary voltage and mainboard,
By the normal working voltage range attenuation alpha times of mainboard, can also make the normal working voltage range of mainboard again smaller than or be equal to U2.
In comparison voltage, if the evanescent voltage illustrates defeated at this time not within the decaying operating voltage range
Enter the primary voltage of mainboard not within the scope of the normal working voltage of mainboard, mainboard may be caused to can not work normally.Therefore,
In such a case, it is possible to which the electronic equipment where controlling the mainboard enters standby mode, to play overvoltage protection
Effect.If conversely, the evanescent voltage is located within the decaying operating voltage range, show that primary voltage is in mainboard
Within the scope of normal working voltage, without carrying out overvoltage protection processing.
S3, in the standby state, if the primary voltage is located within the scope of the normal working voltage, and it is described original
Voltage is located at the time within the scope of the normal working voltage and is more than the preset period, restarts the electronic equipment.
In order to ensure the normal work of electronic equipment as possible, under electronic equipment standby mode, the sustainable detection original
Beginning voltage, and restore to normal range (NR) in primary voltage, restart the electronic equipment.In voltage instability timing, due to existing
Voltage jump may cause primary voltage after dropping to normal range (NR), sport the value more than normal range (NR) again quickly.Cause
This, in order to prevent due to spread of voltage caused by threaten, can restore to normal range (NR) in primary voltage, and restore to normal
The time of range reaches the preset period, just restarts the electronic equipment.In the standby state, if the primary voltage does not exist
Within the scope of the normal working voltage, then the electronic equipment is not restarted.In the standby state, counter can be used from detection
It is started counting up at the time of within the scope of being located at the normal working voltage to the primary voltage, if until counting since counting
Reach the preset period, the primary voltage is always positioned within the scope of the normal working voltage, then is restarted described
Electronic equipment.If before the count value of the counter reaches the preset period, there is the primary voltage and do not exist
The case where within the scope of the normal working voltage, then empties the count value of counter, and does not exist from there is the primary voltage
Lifting New count at the time of within the scope of the normal working voltage.
The preset period can rule of thumb set, the voltage jump feelings that can also be accessed according to electronic equipment
Condition determines.For example, can obtain the primary voltage of historical record not within the scope of the normal working voltage when
It carves, the adjacent primary voltage described twice is calculated not between the time within the scope of normal working voltage according to the moment
Every according to the time interval setting period.For example, 3 primary voltages that can obtain historical record do not exist
At the time of within the scope of the normal working voltage, that is, t1, t2, t3.It is calculated according to t1, t2 and t3 adjacent described twice original
The voltage not time interval within the scope of normal working voltage, that is, Δ t1=t2-t1, Δ t2=t3-t2.Finally, may be used
The period is arranged according to Δ t1 and Δ t2.In one embodiment, the period can be set as Δ t1 and Δ t2
Average value.In another embodiment, the larger one that the period can also be set as in Δ t1 and Δ t2.By upper
Mode is stated, can substantially obtain the mutation rule of the voltage of the electronic equipment access, and the time is arranged according to the rule
Section, the reboot time to be more suitble to.Otherwise, if the period is arranged too small, electronic equipment frequency may be made
It is numerously standby and restart, the electronic equipment service life is influenced, while reducing user experience；If the period setting is too much, hold
Easily influence the use of the electronic equipment.
It, can be in the primary voltage not in the normal working voltage range in order to further obtain the suitable period
Within when, record current time；According to the last time at the current time and historical record primary voltage not in the normal work
At the time of work within voltage range, at the time of calculating this described primary voltage not within the scope of the normal working voltage with
First time interval between at the time of the last primary voltage is not within the scope of the normal working voltage；According to institute
It states first time interval and updates the period.For example, this detects the primary voltage not in the normal working voltage
Within the scope of at the time of can be denoted as t4, it is assumed that the last time primary voltage of historical record is not in the normal working voltage model
It is t3 at the time of within enclosing, then the first time interval can be denoted as Δ t3=t4-t3.When can update described according to above-mentioned Δ t3
Between section.For example, can be averaging to Δ t1, Δ t2 and Δ t3, the average value of Δ t1, Δ t2 and Δ t3 are updated to the time
Section；If Δ t1 is more than Δ t2, and Δ t1 is more than Δ t3, and Δ t1 can also be updated to the period.In this way, energy
The period that the electronic equipment is restarted enough is dynamically adjusted, further avoids frequently opening standby, while not influencing user as possible
Use to the electronic equipment.
It in one embodiment, can also be in the display interface of the electronic equipment after the electronic equipment is restarted
Show notification information；Wherein, the prompt message is used to information associated with reboot operation notifying user.For example, can be with
It calls a dialog box to prompt user, just detects voltage jump, so restarting, avoids burning out TV.The dialogue
Frame may include the numerical value of the numerical value and the normal voltage of the primary voltage, can also include into standby mode when
Between, can also include some text informations, for example, " voltage jump, equipment restarting " etc..In this way, make user
Equipment operation condition can be more intuitively grasped, and is conducive to user and voltage condition is responded (for example, in time in time
It reports for repairment, or using equipment such as transformers).
The above method can be by software realization to voltage jump reply, cost is relatively low.And it is closed in voltage change
It, can be with Auto Power On after disconnected.
As shown in Fig. 2, the present invention also provides a kind of mainboard overvoltage protection systems, it may include：
Detection module 10, for detecting the primary voltage for being input to mainboard；
The mainboard can be the mainboard of computer main board, TV SKD or other electronic equipments.The primary voltage is
Refer to the voltage that the mainboard is input to from external power supply, in general, the numerical value of the primary voltage is larger, for example, being 220V.
When detecting the primary voltage, the primary voltage can be sampled at a certain time interval, obtained according to sampled data
Take the amplitude of the primary voltage.
In one embodiment, in order to cost-effective, can detect the control chip on the mainboard ADC interface (for example,
SAR mouthfuls) voltage, as the primary voltage for being input to mainboard.In this way, it is carried out without additional hardware device
Voltage detecting can effectively reduce cost.
Control module 20, for the primary voltage to be compared with the normal working voltage range of the mainboard, if
For the primary voltage not within the scope of the normal working voltage, the electronic equipment where controlling the mainboard enters standby shape
State；
The normal working voltage range can be denoted as [Umin, Umax], it is however generally that, as primary voltage U0Meet Umin≤U0≤
Umax, then it represents that the primary voltage is located within the scope of the normal working voltage, if U0＜ UminOr U0＞ Umax, then table
Show the primary voltage not within the scope of the normal working voltage.
The function of control module 20 can execute under electronic equipment open state.Assuming that using SAR mouthfuls in step S1
The primary voltage is detected, since SAR mouthfuls of operating voltages are much smaller than the primary voltage (SAR mouthfuls of operating voltage
Generally 3.3V or so), it therefore, burns out for SAR mouthfuls, can first decay to the primary voltage in order to prevent.It can be based on
The maximum working voltage of the ADC interface to the primary voltage and the normal working voltage range with multiple decay
It calculates, obtains evanescent voltage and decaying operating voltage range；The evanescent voltage and decaying operating voltage range are respectively less than or wait
In the maximum working voltage of ADC interface, the evanescent voltage is compared with decaying operating voltage range, if the decaying is electric
For pressure not within the decaying operating voltage range, the electronic equipment where controlling the mainboard enters standby mode.If described
Primary voltage is located within the scope of the normal working voltage, then the electronic equipment continues to work normally.
For example, it is assumed that primary voltage is U1, the maximum value of SAR mouthfuls of operating voltage is U2, then primary voltage can decline
Subtract α times, primary voltage is made to be less than or equal to U2.Similarly, for the ease of comparing the normal working voltage of primary voltage and mainboard,
By the normal working voltage range attenuation alpha times of mainboard, can also make the normal working voltage range of mainboard again smaller than or be equal to U2.
In comparison voltage, if the evanescent voltage illustrates defeated at this time not within the decaying operating voltage range
Enter the primary voltage of mainboard not within the scope of the normal working voltage of mainboard, mainboard may be caused to can not work normally.Therefore,
In such a case, it is possible to which the electronic equipment where controlling the mainboard enters standby mode, to play overvoltage protection
Effect.If conversely, the evanescent voltage is located within the decaying operating voltage range, show that primary voltage is in mainboard
Within the scope of normal working voltage, without carrying out overvoltage protection processing.
Restart module 30, in the standby state, if the primary voltage be located at the normal working voltage range it
It is interior, and the primary voltage is located at the time within the scope of the normal working voltage and is more than the preset period, restarts described
Electronic equipment.
In order to ensure the normal work of electronic equipment as possible, under electronic equipment standby mode, the sustainable detection original
Beginning voltage, and restore to normal range (NR) in primary voltage, restart the electronic equipment.In voltage instability timing, due to existing
Voltage jump may cause primary voltage after dropping to normal range (NR), sport the value more than normal range (NR) again quickly.Cause
This, in order to prevent due to spread of voltage caused by threaten, can restore to normal range (NR) in primary voltage, and restore to normal
The time of range reaches the preset period, just restarts the electronic equipment.In the standby state, if the primary voltage does not exist
Within the scope of the normal working voltage, then the electronic equipment is not restarted.In the standby state, counter can be used from detection
It is started counting up at the time of within the scope of being located at the normal working voltage to the primary voltage, if until counting since counting
Reach the preset period, the primary voltage is always positioned within the scope of the normal working voltage, then is restarted described
Electronic equipment.If before the count value of the counter reaches the preset period, there is the primary voltage and do not exist
The case where within the scope of the normal working voltage, then empties the count value of counter, and does not exist from there is the primary voltage
Lifting New count at the time of within the scope of the normal working voltage.
The preset period can rule of thumb set, the voltage jump feelings that can also be accessed according to electronic equipment
Condition determines.For example, can obtain the primary voltage of historical record not within the scope of the normal working voltage when
It carves, the adjacent primary voltage described twice is calculated not between the time within the scope of normal working voltage according to the moment
Every according to the time interval setting period.For example, 3 primary voltages that can obtain historical record do not exist
At the time of within the scope of the normal working voltage, that is, t1, t2, t3.It is calculated according to t1, t2 and t3 adjacent described twice original
The voltage not time interval within the scope of normal working voltage, that is, Δ t1=t2-t1, Δ t2=t3-t2.Finally, may be used
The period is arranged according to Δ t1 and Δ t2.In one embodiment, the period can be set as Δ t1 and Δ t2
Average value.In another embodiment, the larger one that the period can also be set as in Δ t1 and Δ t2.By upper
Mode is stated, can substantially obtain the mutation rule of the voltage of the electronic equipment access, and the time is arranged according to the rule
Section, the reboot time to be more suitble to.Otherwise, if the period is arranged too small, electronic equipment frequency may be made
It is numerously standby and restart, the electronic equipment service life is influenced, while reducing user experience；If the period setting is too much, hold
Easily influence the use of the electronic equipment.
It, can be in the primary voltage not in the normal working voltage range in order to further obtain the suitable period
Within when, record current time；According to the last time at the current time and historical record primary voltage not in the normal work
At the time of work within voltage range, at the time of calculating this described primary voltage not within the scope of the normal working voltage with
First time interval between at the time of the last primary voltage is not within the scope of the normal working voltage；According to institute
It states first time interval and updates the period.For example, this detects the primary voltage not in the normal working voltage
Within the scope of at the time of can be denoted as t4, it is assumed that the last time primary voltage of historical record is not in the normal working voltage model
It is t3 at the time of within enclosing, then the first time interval can be denoted as Δ t3=t4-t3.When can update described according to above-mentioned Δ t3
Between section.For example, can be averaging to Δ t1, Δ t2 and Δ t3, the average value of Δ t1, Δ t2 and Δ t3 are updated to the time
Section；If Δ t1 is more than Δ t2, and Δ t1 is more than Δ t3, and Δ t1 can also be updated to the period.In this way, energy
The period that the electronic equipment is restarted enough is dynamically adjusted, further avoids frequently opening standby, while not influencing user as possible
Use to the electronic equipment.
In one embodiment, the mainboard overvoltage protection system can also include display module, in the electricity
After sub- equipment is restarted, notification information is shown in the display interface of the electronic equipment；Wherein, the prompt message is for will be with
The associated information of reboot operation notifies user.For example, a dialog box prompt user can be called, just detect that voltage is prominent
Become, so restarting, avoids burning out TV.The dialog box may include the numerical value of the primary voltage and the normal electricity
The numerical value of pressure can also include stand-by time, can also include some text informations, for example, " voltage jump, equipment open again
It is dynamic " etc..In this way, it allows users to more intuitively grasp equipment operation condition, and it is right in time to be conducive to user
Voltage condition responds and (for example, reporting for repairment in time, or uses the equipment such as transformer).
Above system can be by software realization to voltage jump reply, cost is relatively low.And it is closed in voltage change
It, can be with Auto Power On after disconnected.
The mainboard overvoltage protection system of the present invention and the mainboard method of overvoltage protection of the present invention correspond, above-mentioned
The technical characteristic and advantage that the embodiment of mainboard method of overvoltage protection illustrates are suitable for mainboard overvoltage protection system
In the embodiment of system, hereby give notice that.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (8)
1. a kind of mainboard method of overvoltage protection, which is characterized in that include the following steps：
The voltage for detecting the ADC interface of the control chip on mainboard, as the primary voltage for being input to mainboard；
The primary voltage is compared with the normal working voltage range of the mainboard, if the primary voltage is not described
Within the scope of normal working voltage, the electronic equipment where controlling the mainboard enters standby mode；Including：Based on the ADC
The maximum working voltage of interface to the primary voltage and the normal working voltage range with multiple decay calculation, obtain
To evanescent voltage and decaying operating voltage range；The evanescent voltage and decaying operating voltage range are respectively less than or are connect equal to ADC
The maximum working voltage of mouth；The evanescent voltage is compared with decaying operating voltage range；If the evanescent voltage does not exist
Within the decaying operating voltage range, the electronic equipment where controlling the mainboard enters standby mode；
In the standby state, if the primary voltage is located within the scope of the normal working voltage, and the primary voltage position
Time within the scope of the normal working voltage is more than the preset period, restarts the electronic equipment.
2. mainboard method of overvoltage protection according to claim 1, which is characterized in that further comprising the steps of：
After the electronic equipment is restarted, notification information is shown in the display interface of the electronic equipment；Wherein, the notice
Information is used to information associated with reboot operation notifying user.
3. mainboard method of overvoltage protection according to claim 1, which is characterized in that further comprising the steps of：
At the time of the primary voltage of historical record is obtained not within the scope of the normal working voltage；
The adjacent primary voltage described twice is calculated not between the time within the scope of normal working voltage according to the moment
Every；
According to the time interval, the period is set.
4. mainboard method of overvoltage protection according to claim 3, which is characterized in that further comprising the steps of：
If the primary voltage not within the scope of the normal working voltage, records current time；
According to the last time at the current time and historical record primary voltage not within the scope of the normal working voltage
Moment, at the time of calculating this described primary voltage not within the scope of the normal working voltage with the upper primary original electricity
First time interval between at the time of pressure not within the scope of the normal working voltage；
The period is updated according to the first time interval.
5. a kind of mainboard overvoltage protection system, which is characterized in that including：
Detection module, the voltage of the ADC interface for detecting the control chip on mainboard, as the original electricity for being input to mainboard
Pressure；
Control module, for the primary voltage to be compared with the normal working voltage range of the mainboard, if the original
For beginning voltage not within the scope of the normal working voltage, the electronic equipment where controlling the mainboard enters standby mode；Packet
It includes：Attenuation units are used for the maximum working voltage based on the ADC interface, to the primary voltage and normal work electricity
Range is pressed to carry out, with multiple decay calculation, obtaining evanescent voltage and decaying operating voltage range；The evanescent voltage and decaying work
Make voltage range be respectively less than or equal to ADC interface maximum working voltage；Comparing unit：By the evanescent voltage and decaying work
Voltage range is compared；Control unit, if for the evanescent voltage not within the decaying operating voltage range, control
Electronic equipment where the mainboard enters standby mode；
Restart module, is used in the standby state, if the primary voltage is located within the scope of the normal working voltage, and institute
Stating the time that primary voltage is located within the scope of the normal working voltage is more than the preset period, restarts the electronics and sets
It is standby.
6. mainboard overvoltage protection system according to claim 5, which is characterized in that further include：
Display module shows notification information after restarting in the electronic equipment in the display interface of the electronic equipment；
Wherein, the notification information is used to information associated with reboot operation notifying user.
7. mainboard overvoltage protection system according to claim 5, which is characterized in that further include：
Acquisition module, for obtain the primary voltage of historical record not within the scope of the normal working voltage when
It carves；
First computing module, for calculating the adjacent primary voltage described twice not in the normal working voltage according to the moment
Within the scope of time interval；
Setup module, for the period to be arranged according to the time interval.
8. mainboard overvoltage protection system according to claim 7, which is characterized in that further include：
Logging modle records current time if for the primary voltage not within the scope of the normal working voltage；
Second computing module, for the last time primary voltage according to current time and historical record not in the normal work
At the time of work within voltage range, at the time of calculating this described primary voltage not within the scope of the normal working voltage with
First time interval between at the time of the last primary voltage is not within the scope of the normal working voltage；
Update module, for updating the period according to the first time interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610934557.1A CN106484022B (en) | 2016-10-31 | 2016-10-31 | Mainboard overvoltage protection method and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610934557.1A CN106484022B (en) | 2016-10-31 | 2016-10-31 | Mainboard overvoltage protection method and system |
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| Publication Number | Publication Date |
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| CN106484022A CN106484022A (en) | 2017-03-08 |
| CN106484022B true CN106484022B (en) | 2018-09-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101256437A (en) * | 2007-02-27 | 2008-09-03 | 鸿富锦精密工业（深圳）有限公司 | Mainboard voltage feed circuit |
| CN101630908B (en) * | 2008-07-17 | 2012-12-12 | 华硕电脑股份有限公司 | Power supply device and its overvoltage protection unit and method |
| CN101777754B (en) * | 2009-01-09 | 2012-09-05 | 比亚迪股份有限公司 | Overload operation protection method for motor |
| CN102751705A (en) * | 2009-02-10 | 2012-10-24 | 威盛电子股份有限公司 | Electronic device with overvoltage protection and overvoltage protection method thereof |
| CN101752824A (en) * | 2010-02-09 | 2010-06-23 | 成都市华为赛门铁克科技有限公司 | Overload protection method, overload protection device and system for load |
| CN103036196B (en) * | 2012-12-03 | 2015-11-25 | 华为技术有限公司 | Over-pressure safety device and method |
| CN103872649A (en) * | 2012-12-11 | 2014-06-18 | 苏州宝时得电动工具有限公司 | Overload protection method used for electric tool and circuit thereof |
| CN105048404A (en) * | 2015-07-13 | 2015-11-11 | 山东超越数控电子有限公司 | Power supply overvoltage protection method based on triode latch circuit |
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