CN106250786A - A kind of power-off protection of solid state disk method and device - Google Patents
A kind of power-off protection of solid state disk method and device Download PDFInfo
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- CN106250786A CN106250786A CN201610707570.3A CN201610707570A CN106250786A CN 106250786 A CN106250786 A CN 106250786A CN 201610707570 A CN201610707570 A CN 201610707570A CN 106250786 A CN106250786 A CN 106250786A
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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
- G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data
- G06F21/79—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data in semiconductor storage media, e.g. directly-addressable memories
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Abstract
The present invention provides a kind of power-off protection of solid state disk method and device, including Power Monitoring Unit, for detecting the whether power down of the main power source of solid state hard disc and second source；Handover module, after main power source power down being detected at Power Monitoring Unit, being switched to second source by main power source is that solid state hard disc is powered, if power detecting module detects the voltage of second source less than set threshold voltage value, being switched to stand-by power supply by second source is that solid state hard disc is powered, after the power-on time set, cut off the power supply of solid state hard disc.When Power Monitoring Unit detects that working power restores electricity, second source, stand-by power supply being switched to main power source is that solid state hard disc is powered.By means of the technique scheme of this law embodiment, when after main power source powered-off fault, by using stand-by power supply that solid state hard disc is powered, solve in prior art and cannot be to main power source normal shutdown or the problem that powered-off fault makes a distinction.When normal shutdown, it is not necessary to open stand-by power supply and be powered, protect the life-span of stand-by power supply.
Description
Technical field
The present invention relates to a kind of power-off protection of solid state disk method and device.
Background technology
Power down protection technically refers to when normal power supply power supply power-fail, is that storage device is powered with stand-by power supply rapidly, with
Ensure that the data in a period of time internal memory devices will not be lost, when power supply replied by main power source, automatically switch to again main power source
Power supply.
For solid state hard disc, need the data of power down protection to write data often, data are had high reliability
Require system after main power source powered-off fault, need use uninterrupted power source (Uninterruptible Power Supply,
Detection UPS) continue as system power supply.Such as, it is Memory Controller Hub and non-volatile by stand-by power supply after main power source powered-off fault
Internal memory is powered, thus avoids internal storage data to lose.
In the prior art, a kind of solid state hard disc power down of Chinese Patent Application No. 201010180476.X disclosure of the invention is protected
Maintaining method and device, the method includes: solid state hard disc power down detected, and is switched to the energy storage dress pre-set by working power
It is set to solid state hard disc power；Being that solid state hard disc is powered period at energy storage device, the data read and write by solid state hard disc are saved in
Hard disk；Detect that working power restores electricity, and to be switched to working power by energy storage device be that solid state hard disc is powered.
Chinese Patent Application No. 200910091174.2 disclosure of the invention another kind of power-off protection of solid state disk method, device
And system, including: obtain the self-discharge time of the first super-capacitor module；When the described self-discharge time is less than preset value
Time, send the second super capacitor and be discharged to charge-discharge circuit to connect the second super module discharge loop, by the second super capacitor
Module is that solid state hard disc is powered.
Prior art all use super capacitor as the energy storage device of stand-by power supply, but the most not the normally off to solid state hard disc
Machine and powered-off fault make a distinction, and this results in each switching on and shutting down all can carry out discharge and recharge to super capacitor, so can significantly contract
The service life of short super capacitor；It addition, for power-off protection of solid state disk, it is desirable to if time enough solid state hard disc is delayed
In the data write flash deposited, so the time of power down protection should be adjustable, to save electric power resource, also may be used simultaneously
To extend the life-span of super capacitor.
Summary of the invention
The present invention provides a kind of power-off protection of solid state disk method and device, many to super capacitor in order to solve prior art
Secondary repeated charge and the problem that has a strong impact on the super capacitor life-span.
The present invention provides a kind of power-off protection of solid state disk method, including:
When the main power voltage of solid state hard disc being detected less than set threshold voltage, main power source being switched to second source is
Solid state hard disc is powered, and after the power-on time set, cuts off second source and powers to solid state hard disc.
When second source voltage being detected less than set threshold voltage, switching to stand-by power supply is that solid state hard disc is powered, warp
After crossing the power-on time set, cut off stand-by power supply and power to solid state hard disc.
Being that solid state hard disc is powered period at second source and stand-by power supply, the data read and write by solid state hard disc are saved in
In flash；
Detect that main power source power up is powered, second source, stand-by power supply switching to main power source is that solid state hard disc supplies
Electricity.
The present invention also provides for a kind of power-off protection of solid state disk device, including:
Power Monitoring Unit, for detecting the whether power down of the main power source of solid state hard disc and second source；
Handover module, for after Power Monitoring Unit detects main power source power down, is switched to second source by main power source
Power for solid state hard disc, if power detecting module detects the voltage of second source less than set threshold voltage value, by second
It is that solid state hard disc is powered that power supply is switched to stand-by power supply, after the power-on time set, cuts off the power supply of solid state hard disc.At electricity
Source monitoring module detects when working power restores electricity, second source, stand-by power supply being switched to main power source is solid state hard disc
Power supply.
By means of the technique scheme of this law embodiment, when after main power source powered-off fault, by using stand-by power supply pair
Solid state hard disc is powered, and solving in prior art cannot be normal shutdown or powered-off fault makes a distinction to main power source
Problem.When normal shutdown, it is not necessary to open stand-by power supply and be powered, protect the life-span of stand-by power supply.
Accompanying drawing:
Fig. 1 is the detailed process figure of the power-off protection of solid state disk method of the embodiment of the present invention；
Fig. 2 is the structural representation of the power-off protection of solid state disk device of this law embodiment；
Fig. 3 is the concrete structure schematic diagram of the power-off protection of solid state disk device of the embodiment of the present invention；
Fig. 4 is the stand-by power supply schematic diagram of the embodiment of the present invention.
It is embodied as:
The invention provides a kind of power-off protection of solid state disk method and device, below in conjunction with accompanying drawing and embodiment, right
Technical scheme is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain
The present invention, does not limit the present invention.
According to embodiments of the invention, it is provided that a kind of power-off protection of solid state disk method, Fig. 1 is the embodiment of the present invention
The detailed process figure of protecting power failure data of solid state disk method, as it is shown in figure 1, solid state hard disc according to embodiments of the present invention
Power-off protection method includes processing as follows step:
Step 101, Power Monitoring Unit detects the voltage of main power source and second source simultaneously；
Step 102, whether the running voltage of solid state hard disc is less than the threshold voltage set.If main power voltage is higher than setting
Fixed threshold voltage, then perform step 103, otherwise perform step 105.
Step 103, main power source running voltage is normal, Power Monitoring Unit output main power source normal switch Continuity signal.And
And, Power Monitoring Unit output second source switch-on signal and Backup Power Switch Continuity signal are closed mode, turn off
Second source and the output channel of stand-by power supply.Perform step 104.
Step 104, main power voltage is normal, main power source power to solid state hard disc.
Step 105, whether the voltage of Power Monitoring Unit detection second source is less than the threshold voltage set.If second
The voltage of power supply higher than the threshold voltage set, then performs step 106, otherwise performs step 109.
Step 106, main power voltage is less than the threshold voltage set, and the voltage of second source is higher than the threshold value electricity set
Pressure, Power Monitoring Unit output second source normal switch Continuity signal.Further, Power Monitoring Unit output main power switch is led
Messenger and Backup Power Switch Continuity signal are closed mode, turn off the output channel of stand-by power supply, prevent the second electricity simultaneously
The electric current in source pours in down a chimney into main power source and stand-by power supply.Perform step 107.
Step 107, main power voltage is abnormal, and second source voltage is normal, second source power to solid state hard disc；Perform
Step 108.
Step 108, after delay adjustments time T1, automatically shuts down second source and powers to solid state hard disc, to save electric energy.
Step 109, main power voltage and second source voltage are simultaneously less than the threshold voltage of setting, Power Monitoring Unit
Output Backup Power Switch Continuity signal.Further, Power Monitoring Unit output main power switch Continuity signal and second source are opened
Pass Continuity signal is closed mode, turns off the output channel of second source, prevents the electric current of stand-by power supply from pouring in down a chimney simultaneously and become owner of electricity
Source and second source, perform step 110.
Step 110, main power source and second source electric voltage exception, powered to solid state hard disc by stand-by power supply；Perform step
111。
Step 111, after delay adjustments time T2, automatically shuts down second source and powers to solid state hard disc, to save electric energy.
In the embodiment of the present invention, second source is the Standby electricity meeting ATX power specifications 2.1 version and more redaction
Source.
In the embodiment of the present invention, the delay adjustments time summation of T1 and T2 is adjustable.It is preferred that 2s < T1+T2 < 10s.
According to embodiments of the invention, additionally providing a kind of power-off protection of solid state disk device, Fig. 2 is this law embodiment
The structural representation of power-off protection of solid state disk device.As in figure 2 it is shown, the power-off protection of solid state disk device of the embodiment of the present invention
Including: Power Monitoring Unit 20, handover module 21 and time delayed turn-off module 22, below in power-off protection of solid state disk device
Modules is described in detail.
Specifically, whether Power Monitoring Unit 20 is for detecting the voltage of main power source and second source less than set in advance
Threshold voltage；
In actual applications, whether Power Monitoring Unit 20 needs the voltage judging main power source and second source less than in advance
The threshold voltage that solid state hard disc can be made normally to work set；If be detected that the voltage of main power source and second source is less than in advance
The voltage set, it is determined that solid state hard disc powered-off fault；If main power voltage is less than threshold voltage set in advance, the second electricity
The voltage in source is higher than presetting voltage, it is determined that solid state hard disc normal shutdown, stand-by power supply is without carrying out power down protection；If
Detect that the voltage of main power source is higher than the threshold voltage pre-set, it is determined that main power source restores electricity.
Power Monitoring Unit 20 is further used for sending main power switch conducting, second source switch-on signal and standby
On and off switch Continuity signal is to handover module 21.
Handover module 21, for main power source powered-off fault being detected at Power Monitoring Unit 20, is switched to standby by main power source
Power supply is that solid state hard disc is powered；When Power Monitoring Unit 20 detects that main power source restores electricity, stand-by power supply it is switched to main
Power supply is that solid state hard disc is powered.
Time delayed turn-off module 22 is used for after main power source powered-off fault, second source and stand-by power supply are that solid state hard disc supplies
Electricity automatically shut down after the time pre-set, and saved second source and the electric energy of stand-by power supply.
Being described in detail above-mentioned power-down protection apparatus below in conjunction with Fig. 3, Fig. 3 is that the solid-state of the embodiment of the present invention is hard
The concrete structure schematic diagram of dish power-down protection apparatus, as shown in Figure 3:
Power-off protection of solid state disk device will preset the main power source threshold value electricity that a solid state hard disc can normally work
Pressing and second source threshold voltage, main power voltage and second source voltage are monitored by Power Monitoring Unit simultaneously, power supply
Monitoring module output main power source normal switch Continuity signal, main power source are abnormal, second source normal switch Continuity signal and second
Abnormity of power supply Continuity signal.When main power voltage is higher than threshold voltage set in advance, Power Monitoring Unit sends main power source
Normal switch Continuity signal, opens main power source backward flowing preventing device, meanwhile, sends main power source abnormal, and second source normal switch is led
Messenger and second source abnormal signal, close second source switching device, second source backward flowing preventing device, stand-by power supply
Switching device and stand-by power supply backward flowing preventing device, powered to solid state hard disc by main power source, prevents the electric current of main power source from pouring in down a chimney simultaneously
Enter second source and stand-by power supply.
When main power source normal powering down, Power Monitoring Unit will detect that the voltage of main power source is less than voltage set in advance
Threshold value, the supply voltage of second source is higher than voltage threshold set in advance, and it is abnormal that Power Monitoring Unit sends main power source, and second
Power supply normal switch Continuity signal, opens second source switching device, second source backward flowing preventing device, meanwhile, sends main power source
Normal switch Continuity signal and second source normal switch Continuity signal, close main power source backward flowing preventing device, Backup Power Switch
Device and stand-by power supply backward flowing preventing device, powered to solid state hard disc by second source, prevents the electric current of second source from pouring in down a chimney simultaneously
Enter main power source and stand-by power supply.During normal powering down, the electric energy of stand-by power supply is in static state, and stand-by power supply does not consume any electricity
Energy.
When main power source powered-off fault, Power Monitoring Unit will detect that the voltage of main power source is less than voltage set in advance
Threshold value, the supply voltage of second source is less than voltage threshold set in advance, and Power Monitoring Unit sends second source and extremely opens
Close Continuity signal, open Backup Power Switch device, stand-by power supply backward flowing preventing device, meanwhile, send main power source normal switch and lead
Messenger and main power source are abnormal, second source normal switch Continuity signal, close main power source backward flowing preventing device, second source switch
Device and second source backward flowing preventing device, powered to solid state hard disc by stand-by power supply, prevents the electric current of stand-by power supply from pouring in down a chimney simultaneously
Enter main power source and second source.
When main power source recovers, Power Monitoring Unit detects that main power voltage is higher than threshold voltage set in advance, electricity
Source monitoring module sends main power source normal switch Continuity signal, opens main power source backward flowing preventing device, meanwhile, sends main power source different
Often, second source normal switch Continuity signal and second source abnormal signal, close second source switching device, the second electricity
Source backward flowing preventing device, Backup Power Switch device and stand-by power supply backward flowing preventing device, powered to solid state hard disc by main power source, simultaneously
The electric current preventing main power source pours in down a chimney into second source and stand-by power supply.
When main power source recovers, whether the voltage of stand-by power supply detection module detection stand-by power supply is higher than threshold voltage vt h, as
Fruit, higher than threshold voltage vt h, does not the most send alarm；If less than threshold voltage vt h, then sending stand-by power supply low pressure warning.
Fig. 4 show the stand-by power supply schematic diagram of the embodiment of the present invention, in parallel for lithium battery B1 and super capacitor C1.Static
Time, lithium battery B1 charges to super capacitor C1, until super capacitor C1 is fully charged；Stand-by power supply electric discharge time, super capacitor C1 with
Big electric current can export big electric current moment to load discharge, super capacitor C1.Stand-by power supply is the battery that internal resistance is the least, preferably
Ground, the internal resistance of cell is less than 50 milliohms.
Compared with prior art, the technical scheme of the embodiment of the present invention realizes simple, and cost is cheaper, and energy-saving effect is bright
Aobvious.By means of technical scheme, when solid state hard disc powered-off fault, the data read and write will not be lost.
Particular embodiments described above, has been carried out the purpose of the present invention, technical scheme and beneficial effect in more detail
Illustrate, be it should be understood that the specific embodiment that the foregoing is only the present invention, the protection being not intended to limit the present invention
Scope, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included in this
Within bright protection domain.
Claims (3)
1. the present invention provides a kind of power-off protection of solid state disk method and device, in order to solve prior art to super capacitor repeatedly
Repeated charge and the problem that has a strong impact on the super capacitor life-span.
2. the present invention provides a kind of power-off protection of solid state disk method, including:
When the main power voltage of solid state hard disc being detected less than set threshold voltage, main power source being switched to second source is solid-state
Hard disk is powered, and after the power-on time set, cuts off second source and powers to solid state hard disc.
When second source voltage being detected less than set threshold voltage, switching to stand-by power supply is that solid state hard disc is powered, Jing Guoshe
After fixed power-on time, cut off stand-by power supply and power to solid state hard disc.
Being that solid state hard disc is powered period at second source and stand-by power supply, the data read and write by solid state hard disc are saved in
In flash；
Detect that main power source power up is powered, second source, stand-by power supply switching to main power source is that solid state hard disc is powered.
3. the present invention also provides for a kind of power-off protection of solid state disk device, including:
Power Monitoring Unit, for detecting the whether power down of the main power source of solid state hard disc and second source；
Handover module, for after Power Monitoring Unit detects main power source power down, main power source it is solid for switching to second source
State hard disk is powered, if power detecting module detects the voltage of second source less than set threshold voltage value, by second source
Being switched to stand-by power supply is that solid state hard disc is powered, and after the power-on time set, cuts off the power supply of solid state hard disc.Supervise at power supply
Control module detects when working power restores electricity, second source, stand-by power supply being switched to main power source is that solid state hard disc is powered.
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| CN201610707570.3A CN106250786A (en) | 2016-08-23 | 2016-08-23 | A kind of power-off protection of solid state disk method and device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108389596A (en) * | 2018-05-22 | 2018-08-10 | 北京紫光得瑞科技有限公司 | A kind of power-down protection circuit, method and the solid state disk of NAND Flash chips |
| CN108932046A (en) * | 2018-06-25 | 2018-12-04 | 郑州云海信息技术有限公司 | A kind of disk array and its backup power supply system |
| CN110543227A (en) * | 2019-09-09 | 2019-12-06 | 众通乐行网络科技(深圳)有限公司 | Power-down protection method and device for rail transit server |
| CN110931076A (en) * | 2019-11-24 | 2020-03-27 | 苏州浪潮智能科技有限公司 | Solid state disk abnormal power-on and power-off testing device and method |
| CN111864885A (en) * | 2020-07-14 | 2020-10-30 | 苏州浪潮智能科技有限公司 | Hard disk power supply control device and method |
| CN112165155A (en) * | 2020-08-28 | 2021-01-01 | 珠海格力电器股份有限公司 | Power-down protection device, robot controller and power-down protection method thereof |
| CN112652348A (en) * | 2020-12-22 | 2021-04-13 | 深圳市国微电子有限公司 | NAND Flash chip power-down protection circuit and protection method |
| CN113119735A (en) * | 2021-04-22 | 2021-07-16 | 东风汽车集团股份有限公司 | Power-down protection method and circuit for motor control power supply |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108389596B (en) * | 2018-05-22 | 2023-12-22 | 北京得瑞领新科技有限公司 | Power-down protection circuit and method of NAND Flash chip and solid state disk |
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| CN108932046A (en) * | 2018-06-25 | 2018-12-04 | 郑州云海信息技术有限公司 | A kind of disk array and its backup power supply system |
| CN110543227A (en) * | 2019-09-09 | 2019-12-06 | 众通乐行网络科技(深圳)有限公司 | Power-down protection method and device for rail transit server |
| CN110931076B (en) * | 2019-11-24 | 2021-09-17 | 苏州浪潮智能科技有限公司 | Solid state disk abnormal power-on and power-off testing device and method |
| CN110931076A (en) * | 2019-11-24 | 2020-03-27 | 苏州浪潮智能科技有限公司 | Solid state disk abnormal power-on and power-off testing device and method |
| CN111864885B (en) * | 2020-07-14 | 2022-04-22 | 苏州浪潮智能科技有限公司 | Hard disk power supply control device and method |
| CN111864885A (en) * | 2020-07-14 | 2020-10-30 | 苏州浪潮智能科技有限公司 | Hard disk power supply control device and method |
| CN112165155A (en) * | 2020-08-28 | 2021-01-01 | 珠海格力电器股份有限公司 | Power-down protection device, robot controller and power-down protection method thereof |
| CN112652348A (en) * | 2020-12-22 | 2021-04-13 | 深圳市国微电子有限公司 | NAND Flash chip power-down protection circuit and protection method |
| CN112652348B (en) * | 2020-12-22 | 2024-03-22 | 深圳市国微电子有限公司 | NAND Flash chip power-down protection circuit and protection method |
| CN113119735A (en) * | 2021-04-22 | 2021-07-16 | 东风汽车集团股份有限公司 | Power-down protection method and circuit for motor control power supply |
| CN113119735B (en) * | 2021-04-22 | 2022-07-01 | 东风汽车集团股份有限公司 | Power-down protection method and circuit for motor control power supply |
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