CN106484022A - Mainboard overvoltage protection method and system - Google Patents
Mainboard overvoltage protection method and system Download PDFInfo
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- CN106484022A CN106484022A CN201610934557.1A CN201610934557A CN106484022A CN 106484022 A CN106484022 A CN 106484022A CN 201610934557 A CN201610934557 A CN 201610934557A CN 106484022 A CN106484022 A CN 106484022A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000001514 detection method Methods 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 8
- 238000012935 Averaging Methods 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
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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- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (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 vitals in electronic equipment.When the power supply for being input to mainboard is unstable, during voltage jump, hold
It is easily caused mainboard to burn out, so as to affect the normal work of electronic equipment.In order to ensure the normal work of electronic equipment, need to master
Plate is protected, i.e. the voltage to being input into mainboard is controlled, and prevents the voltage for being input into mainboard from exceeding the normal work electricity of mainboard
Press and cause mainboard to burn out.
In current mainboard, some does not have the safeguard procedures for making software for voltage jump, causes certain areas master
Plate and some components and parts are because voltage jump causes the defect ratio that damages higher.Some is to realize protection by hardware
Function.Although safeguard function can be realized to a certain extent by hardware mode, relatively costly.
Content of the invention
Based on this, it is necessary to for relatively costly problem, a kind of mainboard method of overvoltage protection and system is provided.
A kind of mainboard method of overvoltage protection, comprises the following steps：
Detection is input to the primary voltage of mainboard；
Normal working voltage scope of the primary voltage with the mainboard is compared, if the primary voltage does not exist
Within the scope of the normal working voltage, the electronic equipment for controlling the mainboard to be located enters holding state；
In the standby state, if the primary voltage is within the scope of the normal working voltage, and the original electricity
Time within the scope of pressure is located at the normal working voltage is more than the default time period, restarts the electronic equipment.
A kind of mainboard overvoltage protection system, including：
Detection module, is input to the primary voltage of mainboard for detection；
Control module, is compared for the normal working voltage scope by the primary voltage with the mainboard, if institute
Primary voltage is stated not within the scope of the normal working voltage, the electronic equipment for controlling the mainboard to be located enters standby shape
State；
Restart module, in the standby state, if within the scope of the primary voltage is located at the normal working voltage,
And time of the primary voltage within the scope of the normal working voltage is more than the default time 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 is not within the scope of the normal working voltage, controls the mainboard institute
Electronic equipment enter holding state；Also, continue detection primary voltage in the standby state, if within the default time period
Within the scope of the primary voltage is always positioned at the normal working voltage, then restart the electronic equipment, said method and be
System can be realized by software, without the need for extra hardware device, effectively mainboard can be carried out on the premise of system cost is reduced
Protection.
Description of the drawings
Fig. 1 is the mainboard method of overvoltage protection flow chart of one embodiment；
Fig. 2 is the structural representation of the mainboard overvoltage protection system of one embodiment.
Specific embodiment
Below in conjunction with the accompanying drawings technical scheme is illustrated.
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.Described
Primary voltage refers to be input to the voltage of the mainboard 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, at a certain time interval the primary voltage can be sampled, according to
Sampled data obtains the amplitude of the primary voltage.
In one embodiment, (for example, in order to cost-effective, the ADC interface of control chip on the mainboard can be detected
SAR mouth) voltage, as the primary voltage for being input to mainboard.In this way, without the need for being carried out using extra hardware device
Voltage detecting, being capable of effective reduces cost.
S2, normal working voltage scope of the primary voltage with the mainboard is compared, if the primary voltage
Not within the scope of the normal working voltage, the electronic equipment for controlling the mainboard to be located enters holding state；
The normal working voltage scope can be designated as [Umin, Umax], it is however generally that, as primary voltage U0Meet Umin≤U0≤
Umax, then it represents that within the scope of the primary voltage is located at the normal working voltage, if U0＜ Umin, or U0＞ Umax, then table
Show the primary voltage not within the scope of the normal working voltage.
This step can be executed under electronic equipment open state.Assume to employ SAR mouth to described original in step S1
Voltage is detected that (operating voltage of SAR mouth is generally 3.3V as the operating voltage of SAR mouth is much smaller than the primary voltage
Left and right), therefore, in order to prevent SAR mouth from burning out, first the primary voltage can be decayed.The ADC interface can be based on
Maximum working voltage, same multiple decay calculation is carried out with the normal working voltage scope to the primary voltage, is declined
Powered down pressure and decay operating voltage range；The evanescent voltage and decay operating voltage range are respectively less than or equal to ADC interface
Maximum working voltage, the evanescent voltage is compared with decay operating voltage range, if the evanescent voltage is not described
Within decay operating voltage range, the electronic equipment for controlling the mainboard to be located enters holding state.If the primary voltage position
Within the scope of the normal working voltage, then the electronic equipment continues normal work.
For example, it is assumed that primary voltage is U2 for the maximum of the operating voltage of U1, SAR mouth, then primary voltage can be declined
Subtract α times, primary voltage is made less than or equal to U2.Similarly, for the ease of comparing the normal working voltage of primary voltage and mainboard,
Also by the normal working voltage scope attenuation alpha of mainboard times, can make the normal working voltage scope of mainboard again smaller than or be equal to U2.
In comparison voltage, if the evanescent voltage is illustrated now defeated not within the decay operating voltage range
Enter the primary voltage of mainboard not within the scope of the normal working voltage of mainboard, may cause the mainboard cannot normal work.Therefore,
In such a case, it is possible to the electronic equipment for controlling the mainboard to be located enters holding state, so as to play overvoltage protection
Effect.If conversely, the evanescent voltage is located within the decay operating voltage range, showing primary voltage in mainboard
In the range of normal working voltage, overvoltage protection process need not be carried out.
S3, in the standby state, if within the scope of the primary voltage is located at the normal working voltage and described original
Time within the scope of voltage is located at the normal working voltage is more than the default time period, restarts the electronic equipment.
In order to ensure the normal work of electronic equipment, under electronic equipment holding state as far as possible, the sustainable detection original
Beginning voltage, and after primary voltage recovers to normal range (NR), restart the electronic equipment.In voltage instability timing, due to existing
Voltage jump, may cause primary voltage after normal range (NR) is dropped to, and sport the value more than normal range (NR) quickly again.Cause
This, in order to prevent the threat caused because of spread of voltage, can recover to normal range (NR) in primary voltage, and recover to normal
The time of scope reaches the default time 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, can be using counter from detection
Moment within the scope of the normal working voltage being located to the primary voltage starts counting up, if starting until counting from counting
The default time period is reached, within the scope of the primary voltage is always positioned at the normal working voltage, is then restarted described
Electronic equipment.If before the count value of the counter reaches the default time period, there is the primary voltage and do not exist
Situation within the scope of the normal working voltage, then empty the count value of counter, and does not exist from there is the primary voltage
Moment lifting New count within the scope of the normal working voltage.
The default time period rule of thumb can set, it is also possible to according to the voltage jump feelings that electronic equipment is accessed
Condition is determining.For example, it is possible to obtain the primary voltage of historical record not within the scope of the normal working voltage when
Carve, adjacent described twice primary voltage is calculated not between the time within the scope of the normal working voltage according to the moment
Every according to the time interval setting time period.For example, it is possible to 3 primary voltages for obtaining historical record do not exist
Moment within the scope of the normal working voltage, i.e. t1, t2, t3.Calculated according to t1, t2 and t3 adjacent described twice original
Voltage time interval not within the scope of the normal working voltage, i.e. Δ t1=t2-t1, Δ t2=t3-t2.Finally, may be used
To arrange the time period according to Δ t1 and Δ t2.In one embodiment, the time period Δ t1 and Δ t2 can be set to
Mean value.In another embodiment, it is also possible to which the time period is set to the larger one in Δ t1 and Δ t2.By upper
Mode is stated, the mutation rule of the voltage that the electronic equipment is accessed can be substantially drawn, and the time is arranged according to the rule
Section, so as to the reboot time being more suitable for.Otherwise, if the time period arranges too small, electronic equipment frequency may be made
Numerously standby and restart, the electronic equipment life-span is affected, while reducing Consumer's Experience；If the time period setting is too much, hold
The use of the electronic equipment is easily affected.
In order to obtain the suitable time period further, can be in the primary voltage not in the normal working voltage scope
Within when, record current time；According to current time with the last time of the historical record primary voltage not in the normal work
Make the moment within voltage range, calculate this described primary voltage moment not within the scope of the normal working voltage with
Last primary voltage very first time interval not between the moment within the scope of the normal working voltage；According to institute
State very first time interval and update the time period.For example, this detects the primary voltage not in the normal working voltage
Within the scope of moment can be designated as t4, it is assumed that last time of historical record, the primary voltage was not in the normal working voltage model
Moment within enclosing is t3, then the very first time interval can be designated as Δ t3=t4-t3.When can update described according to above-mentioned Δ t3
Between section.For example, it is possible to be averaging to Δ t1, Δ t2 and Δ t3, the mean value of Δ t1, Δ t2 and Δ t3 is updated to the time
Section；If Δ t1 is more than Δ t2, and Δ t1 is more than Δ t3, it is also possible to which Δ t1 is updated to the time period.In this way, energy
Enough dynamically adjust the time period that the electronic equipment is restarted, avoid further frequently opening standby, while do not affect user as far as possible
Use to the electronic equipment.
In one embodiment, after the electronic equipment is restarted, can also be in the display interface of the electronic equipment
Show announcement information；Wherein, the information is used for for the information being associated with reboot operation notifying user.For example, it is possible to
A dialog box prompting user being called, just voltage jump being detected, so restarting, it is to avoid burn out TV.The dialogue
Frame can include the numerical value of the primary voltage and the numerical value of the normal voltage, can also include to enter holding state when
Between, some Word messages, for example, " voltage jump, equipment restart " etc. can also be included.In this way, user is made
Equipment operation condition can be more intuitively grasped, and is conducive to user to respond voltage condition (for example, in time in time
Report for repairment, or using equipment such as transformers).
Said method can realize reply to voltage jump by software, and cost is than relatively low.And closing in voltage change
After disconnected, can be with Auto Power On.
As shown in Fig. 2 the present invention also provides a kind of mainboard overvoltage protection system, it may include：
Detection module 10, is input to the primary voltage of mainboard for detection；
The mainboard can be the mainboard of computer main board, TV SKD or other electronic equipments.The primary voltage is
Refer to be input to the voltage of the mainboard from external power supply, in general, the numerical value of the primary voltage is larger, for example, is 220V.
When the primary voltage is detected, at a certain time interval the primary voltage can be sampled, be obtained according to sampled data
Take the amplitude of the primary voltage.
In one embodiment, (for example, in order to cost-effective, the ADC interface of control chip on the mainboard can be detected
SAR mouth) voltage, as the primary voltage for being input to mainboard.In this way, without the need for being carried out using extra hardware device
Voltage detecting, being capable of effective reduces cost.
Control module 20, is compared for the normal working voltage scope by the primary voltage with the mainboard, if
Not within the scope of the normal working voltage, the electronic equipment for controlling the mainboard to be located enters standby shape to the primary voltage
State；
The normal working voltage scope can be designated as [Umin, Umax], it is however generally that, as primary voltage U0Meet Umin≤U0≤
Umax, then it represents that within the scope of the primary voltage is located at the normal working voltage, if U0＜ Umin, or U0＞ Umax, then table
Show the primary voltage not within the scope of the normal working voltage.
The function of control module 20 can be executed under electronic equipment open state.Assume to employ SAR mouth in step S1
The primary voltage is detected, as the operating voltage of SAR mouth is much smaller than the primary voltage (operating voltage of SAR mouth
Generally 3.3V or so), therefore, in order to prevent SAR mouth from burning out, first the primary voltage can be decayed.Can be based on
The maximum working voltage of the ADC interface, carries out the decay of same multiple to the primary voltage and the normal working voltage scope
Calculate, evanescent voltage is obtained with decay operating voltage range；The evanescent voltage and decay operating voltage range are respectively less than or wait
In the maximum working voltage of ADC interface, the evanescent voltage is compared with decay operating voltage range, if the decay electricity
Not within the decay operating voltage range, the electronic equipment for controlling the mainboard to be located enters holding state to pressure.If described
Within the scope of primary voltage is located at the normal working voltage, then the electronic equipment continues normal work.
For example, it is assumed that primary voltage is U2 for the maximum of the operating voltage of U1, SAR mouth, then primary voltage can be declined
Subtract α times, primary voltage is made less than or equal to U2.Similarly, for the ease of comparing the normal working voltage of primary voltage and mainboard,
Also by the normal working voltage scope attenuation alpha of mainboard times, can make the normal working voltage scope of mainboard again smaller than or be equal to U2.
In comparison voltage, if the evanescent voltage is illustrated now defeated not within the decay operating voltage range
Enter the primary voltage of mainboard not within the scope of the normal working voltage of mainboard, may cause the mainboard cannot normal work.Therefore,
In such a case, it is possible to the electronic equipment for controlling the mainboard to be located enters holding state, so as to play overvoltage protection
Effect.If conversely, the evanescent voltage is located within the decay operating voltage range, showing primary voltage in mainboard
In the range of normal working voltage, overvoltage protection process need not be carried out.
Restart module 30, in the standby state, if the primary voltage be located at the normal working voltage scope it
Interior, and the time within the scope of the primary voltage is located at the normal working voltage is more than the default time period, restarts described
Electronic equipment.
In order to ensure the normal work of electronic equipment, under electronic equipment holding state as far as possible, the sustainable detection original
Beginning voltage, and after primary voltage recovers to normal range (NR), restart the electronic equipment.In voltage instability timing, due to existing
Voltage jump, may cause primary voltage after normal range (NR) is dropped to, and sport the value more than normal range (NR) quickly again.Cause
This, in order to prevent the threat caused because of spread of voltage, can recover to normal range (NR) in primary voltage, and recover to normal
The time of scope reaches the default time 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, can be using counter from detection
Moment within the scope of the normal working voltage being located to the primary voltage starts counting up, if starting until counting from counting
The default time period is reached, within the scope of the primary voltage is always positioned at the normal working voltage, is then restarted described
Electronic equipment.If before the count value of the counter reaches the default time period, there is the primary voltage and do not exist
Situation within the scope of the normal working voltage, then empty the count value of counter, and does not exist from there is the primary voltage
Moment lifting New count within the scope of the normal working voltage.
The default time period rule of thumb can set, it is also possible to according to the voltage jump feelings that electronic equipment is accessed
Condition is determining.For example, it is possible to obtain the primary voltage of historical record not within the scope of the normal working voltage when
Carve, adjacent described twice primary voltage is calculated not between the time within the scope of the normal working voltage according to the moment
Every according to the time interval setting time period.For example, it is possible to 3 primary voltages for obtaining historical record do not exist
Moment within the scope of the normal working voltage, i.e. t1, t2, t3.Calculated according to t1, t2 and t3 adjacent described twice original
Voltage time interval not within the scope of the normal working voltage, i.e. Δ t1=t2-t1, Δ t2=t3-t2.Finally, may be used
To arrange the time period according to Δ t1 and Δ t2.In one embodiment, the time period Δ t1 and Δ t2 can be set to
Mean value.In another embodiment, it is also possible to which the time period is set to the larger one in Δ t1 and Δ t2.By upper
Mode is stated, the mutation rule of the voltage that the electronic equipment is accessed can be substantially drawn, and the time is arranged according to the rule
Section, so as to the reboot time being more suitable for.Otherwise, if the time period arranges too small, electronic equipment frequency may be made
Numerously standby and restart, the electronic equipment life-span is affected, while reducing Consumer's Experience；If the time period setting is too much, hold
The use of the electronic equipment is easily affected.
In order to obtain the suitable time period further, can be in the primary voltage not in the normal working voltage scope
Within when, record current time；According to current time with the last time of the historical record primary voltage not in the normal work
Make the moment within voltage range, calculate this described primary voltage moment not within the scope of the normal working voltage with
Last primary voltage very first time interval not between the moment within the scope of the normal working voltage；According to institute
State very first time interval and update the time period.For example, this detects the primary voltage not in the normal working voltage
Within the scope of moment can be designated as t4, it is assumed that last time of historical record, the primary voltage was not in the normal working voltage model
Moment within enclosing is t3, then the very first time interval can be designated as Δ t3=t4-t3.When can update described according to above-mentioned Δ t3
Between section.For example, it is possible to be averaging to Δ t1, Δ t2 and Δ t3, the mean value of Δ t1, Δ t2 and Δ t3 is updated to the time
Section；If Δ t1 is more than Δ t2, and Δ t1 is more than Δ t3, it is also possible to which Δ t1 is updated to the time period.In this way, energy
Enough dynamically adjust the time period that the electronic equipment is restarted, avoid further frequently opening standby, while do not affect user as far 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, show announcement information in the display interface of the electronic equipment；Wherein, be used for will be with for the information
The associated information of reboot operation notifies user.For example, it is possible to a dialog box prompting user is called, voltage is just detected and has dashed forward
Become, so restarting, it is to avoid burn out TV.The dialog box can 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 Word messages, and for example, " voltage jump, equipment are opened again
Dynamic " etc..In this way, allow users to equipment operation condition is more intuitively grasped, and be conducive to user right in time
Voltage condition responds (for example, report for repairment in time, or adopt the equipment such as transformer).
Said system can realize reply to voltage jump by software, and cost is than relatively low.And closing in voltage change
After disconnected, can be with Auto Power On.
The mainboard overvoltage protection system of the present invention is corresponded with the mainboard method of overvoltage protection of the present invention, above-mentioned
The technical characteristic that the embodiment of mainboard method of overvoltage protection is illustrated and its advantage are all applied to mainboard overvoltage protection system
In the embodiment of system, hereby give notice that.
Each technical characteristic of embodiment described above arbitrarily can be combined, for making description succinct, not to above-mentioned reality
Apply 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, the scope of this specification record is all considered to be.
Embodiment described above only have expressed the several embodiments of the present invention, and its description is more concrete and detailed, but simultaneously
Therefore can not be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, can also make some deformation and improvement, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (10)
1. a kind of mainboard method of overvoltage protection, it is characterised in that comprise the following steps：
Detection is input to the primary voltage of mainboard；
Normal working voltage scope of the primary voltage with the mainboard is compared, if the primary voltage is not described
Within the scope of normal working voltage, the electronic equipment for controlling the mainboard to be located enters holding state；
In the standby state, if the primary voltage is 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 default time period, restarts the electronic equipment.
2. mainboard method of overvoltage protection according to claim 1, it is characterised in that detection is input to the original electricity of mainboard
The step of pressure, includes：
The voltage of the ADC interface of control chip on the mainboard is detected, as the primary voltage for being input to mainboard；
Normal working voltage scope of the primary voltage with the mainboard is compared, if the primary voltage is not described
Within the scope of normal working voltage, the electronic equipment at the mainboard place is controlled to include the step of entering holding state：
Based on the maximum working voltage of the ADC interface, the primary voltage and the normal working voltage scope are carried out same
Multiple decay calculation, obtains evanescent voltage with decay operating voltage range；The evanescent voltage is equal with decay operating voltage range
Maximum working voltage less than or equal to ADC interface.
The evanescent voltage is compared with decay operating voltage range；
If not within the decay operating voltage range, the electronic equipment for controlling the mainboard to be located is entered the evanescent voltage
Holding state.
3. mainboard method of overvoltage protection according to claim 1, it is characterised in that further comprising the steps of：
After the electronic equipment is restarted, show announcement information in the display interface of the electronic equipment；Wherein, the notice
Information is used for for the information being associated with reboot operation notifying user.
4. mainboard method of overvoltage protection according to claim 1, it is characterised in that further comprising the steps of：
The when of the primary voltage of historical record being obtained not within the scope of the normal working voltage；
Adjacent described twice primary voltage is calculated not between the time within the scope of the normal working voltage according to the moment
Every；
The time period is arranged according to the time interval.
5. mainboard method of overvoltage protection according to claim 4, it is characterised in that further comprising the steps of：
If the primary voltage is not within the scope of the normal working voltage, current time is recorded；
According to current time with the last time of the historical record primary voltage not within the scope of the normal working voltage
Moment, calculate this described primary voltage not the moment within the scope of the normal working voltage with the once original electricity
Pressure very first time interval not between the moment within the scope of the normal working voltage；
The time period is updated according to very first time interval.
6. a kind of mainboard overvoltage protection system, it is characterised in that include：
Detection module, is input to the primary voltage of mainboard for detection；
Control module, is compared for the normal working voltage scope by the primary voltage with the mainboard, if the original
Not within the scope of the normal working voltage, the electronic equipment for controlling the mainboard to be located enters holding state to beginning voltage；
Restart module, in the standby state, if within the scope of the primary voltage is located at the normal working voltage, and institute
The time within the scope of primary voltage is located at the normal working voltage is stated more than the default time period, restart the electronics and set
Standby.
7. mainboard overvoltage protection system according to claim 6, it is characterised in that the detection module includes：
Detector unit, for detecting the voltage of the ADC interface of the control chip on the mainboard, as being input to the original of mainboard
Voltage；
The control module includes：
Attenuation units, for the maximum working voltage based on the ADC interface, to the primary voltage and normal work electricity
Pressure scope carries out same multiple decay calculation, obtains evanescent voltage with decay operating voltage range；The evanescent voltage and decay work
The maximum for making voltage range is respectively less than or the maximum working voltage equal to ADC interface；
Comparing unit, for the evanescent voltage is compared with decay operating voltage range；
Control unit, if for the evanescent voltage not within the decay operating voltage range, control the mainboard to be located
Electronic equipment enter holding state.
8. mainboard overvoltage protection system according to claim 6, it is characterised in that also include：
Display module, after restarting in the electronic equipment, shows announcement information in the display interface of the electronic equipment；
Wherein, the information is used for for the information being associated with reboot operation notifying user.
9. mainboard overvoltage protection system according to claim 6, it is characterised in that also include：
Acquisition module, for obtain the primary voltage of historical record not within the scope of the normal working voltage when
Carve；
First computing module, for calculating adjacent described twice primary voltage not in the normal working voltage according to the moment
Within the scope of time interval；
Setup module, for arranging the time period according to the time interval.
10. mainboard overvoltage protection system according to claim 9, it is characterised in that also include：
Logging modle, if for the primary voltage not within the scope of the normal working voltage, records current time；
Second computing module, for according to current time with the last time of the historical record primary voltage in the normal work
Make the moment within voltage range, calculate this described primary voltage moment not within the scope of the normal working voltage with
Last primary voltage very first time interval not between the moment within the scope of the normal working voltage；
Update module, for updating the time period according to very 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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610934557.1A CN106484022B (en) | 2016-10-31 | 2016-10-31 | Mainboard overvoltage protection method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106484022A true CN106484022A (en) | 2017-03-08 |
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