CN204302966U - A kind of power-down protection apparatus preventing Raid data of magnetic disk array from losing - Google Patents
A kind of power-down protection apparatus preventing Raid data of magnetic disk array from losing Download PDFInfo
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- CN204302966U CN204302966U CN201420855477.3U CN201420855477U CN204302966U CN 204302966 U CN204302966 U CN 204302966U CN 201420855477 U CN201420855477 U CN 201420855477U CN 204302966 U CN204302966 U CN 204302966U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
The power-down protection apparatus preventing Raid data of magnetic disk array from losing, belongs to emergency protection circuit device for electric field.It is characterized in that comprising power supply, isolation DC-DC, ideal diode circuit, power-down protection circuit, secondary power supply, FPGA and storer; Power-down protection circuit comprises super capacitor current-limiting charging circuit, power-fail detection circuit, super capacitor parallel circuit and power circuit commutation circuit; Isolation DC-DC is connected with ideal diode circuit; Ideal diode circuit is connected with power circuit commutation circuit with super capacitor current-limiting charging circuit respectively; Super capacitor current-limiting charging circuit is connected with super capacitor parallel circuit; By increasing the circuit structure such as ideal diode circuit, power-down protection circuit; use super capacitor; efficiently solve the volatile problem of memory data that power cut-off in GJB181 causes; the use that instead of original battery provides cost savings; and circuit structure is simple, charging process is quick, safe and reliable, long service life, is suitable for promoting the use of.
Description
Technical field
The utility model belongs to emergency protection circuit device for electric field, particularly relates to a kind of power-down protection apparatus preventing loss of data.
Background technology
Solid state hard disc power down causes loss of data to be the problem that all the time annoying us for a long time, data are write inside solid state hard disc, what be first stored into is not be not afraid of on the flash memory particle of power down, but in DDR memory grain on solid state hard disc, a kind of high-speed cache of volatibility, to wait until that buffer memory is write full always, just can consider whether the data in internal memory will be moved in the middle of flash memory, after solid state hard disc instant power-down, data in data cache, may will be real forever lost, bring huge loss.50ms power-off is had to its power supply characteristic in existing GJB181; this is rugged surroundings to disc array system; threaten the data be temporarily stored among volatile memory (DDR); in order to protect these data; prior art adopts the back-up source based on battery to provide to be enough to make RAID controller volatile data be write the short-time rating of nonvolatile memory; but simultaneously battery may cause blast because have overshoot or cross to put again, the security of battery power supply in support is therefore used to become key issue.Simultaneously make circuit more complicated adding of battery, and the life-span of battery compared with disconnected, momentary current is little, charging process is slow, affect the reliability of product, limit the further performance of interlock circuit function for these reasons.
Summary of the invention
The utility model is intended to solve the problem, and provides the power-down protection apparatus preventing loss of data that a kind of circuit structure is simple and safe and reliable.
The power-down protection apparatus preventing Raid data of magnetic disk array from losing, comprises power supply, isolation DC-DC, ideal diode circuit, power-down protection circuit, secondary power supply, FPGA and storer;
Described power-down protection circuit comprises super capacitor current-limiting charging circuit, power-fail detection circuit, super capacitor parallel circuit and power circuit commutation circuit;
Described power supply is connected with power-fail detection circuit with isolation DC-DC respectively;
Described isolation DC-DC is connected with ideal diode circuit;
Described ideal diode circuit is connected with power circuit commutation circuit with super capacitor current-limiting charging circuit respectively;
Described super capacitor current-limiting charging circuit is connected with super capacitor parallel circuit;
Described super capacitor parallel circuit is connected with power circuit commutation circuit;
Described power circuit commutation circuit is connected with secondary power supply;
Described power-fail detection circuit is connected with secondary power supply with power circuit commutation circuit respectively;
Described secondary power supply is connected with storer with FPGA respectively;
Described storer is connected with FPGA.
The output voltage of power supply described in the utility model is 28V.
The output voltage of isolation DC-DC described in the utility model is 5V.
Ideal diode circuit described in the utility model comprises two MOS, and two MOS are Mirror Symmetry arranges, and pours in down a chimney miscellaneous equipment for the electric current of super capacitor after preventing power down.
Super capacitor current-limiting charging circuit described in the utility model comprises thermistor, and thermistor is series at power input, overweight and cause front stage circuits (DC-DC) fault or protection for solving capacitive load.
Thermistor described in the utility model is macromolecular PTC thermistor, owing to having unique positive temperature coefficient resistor characteristic, is thus very suitable as over-current protection device.
Power-fail detection circuit described in the utility model comprises stabilivolt, light emitting diode and optocoupler, and stabilivolt is connected with light emitting diode; Whether light emitting diode is interacted by light and optocoupler, normal for the power supply detecting power supply, if occur abnormal, carries out super capacitor and powers.
Storer described in the utility model is DDR storer.
The power-down protection apparatus preventing Raid data of magnetic disk array from losing described in the utility model; by the improvement to original circuit; increase the circuit structure such as ideal diode circuit, power-down protection circuit; use super capacitor; efficiently solve the problem that memory data that power cut-off in GJB181 causes is volatile, instead of the use of original battery, provide cost savings; and circuit structure is simple, charging process is quick, safe and reliable, long service life, is suitable for promoting the use of.
Accompanying drawing explanation
Fig. 1 is the utility model system principle diagram;
Fig. 2 is the utility model ideal diode circuit figure;
Fig. 3 is the utility model super capacitor current-limiting charging circuit figure;
Fig. 4 is the utility model power-fail detection circuit figure.
Embodiment
The power-down protection apparatus preventing Raid data of magnetic disk array from losing, comprises power supply, isolation DC-DC, ideal diode circuit, power-down protection circuit, secondary power supply, FPGA and storer; Described power-down protection circuit comprises super capacitor current-limiting charging circuit, power-fail detection circuit, super capacitor parallel circuit and power circuit commutation circuit; Described power supply is connected with power-fail detection circuit with isolation DC-DC respectively; Described isolation DC-DC is connected with ideal diode circuit; Described ideal diode circuit is connected with power circuit commutation circuit with super capacitor current-limiting charging circuit respectively; Described super capacitor current-limiting charging circuit is connected with super capacitor parallel circuit; Described super capacitor parallel circuit is connected with power circuit commutation circuit; Described power circuit commutation circuit is connected with secondary power supply; Described power-fail detection circuit is connected with secondary power supply with power circuit commutation circuit respectively; Described secondary power supply is connected with storer with FPGA respectively; Described storer is connected with FPGA.The output voltage of described power supply is 28V.The output voltage of described isolation DC-DC is 5V.Described storer is DDR storer
As shown in Figure 1,28V power supply through DC-DC module step-down be 5V, through circuit such as desirable diode, super capacitor, power supply power-fail detections.When 28V power supply normally powers on, now super capacitor starts constant-current charge, and simultaneity factor starts normal work, and when unexpected power down, power-fail detection circuit Switching power super capacitor provides short-time rating, meanwhile notifies that FPGA preserves data.
As shown in Figure 2, ideal diode circuit comprises two MOS, and two MOS are Mirror Symmetry arranges, and pours in down a chimney miscellaneous equipment for the electric current of super capacitor after preventing power down.If use common commutation diode, the pressure drop when electric current is at about 3A on diode is about about 1.7V, and its power is about about 5.1W; If 5V powers, step-down is 3.3V, makes system power supply operation irregularity.MOS control circuit uses a metal-oxide-semiconductor control IC of Linear Technology science and technology.Through surveying this circuit under 10A electric current, pressure drop is only 0.1V.
Super capacitor current-limiting charging circuit described in the utility model comprises thermistor, and as shown in Figure 3, thermistor is series at power input, overweight and cause front stage circuits (DC-DC) fault or protection for solving capacitive load.Thermistor is macromolecular PTC thermistor, owing to having unique positive temperature coefficient resistor characteristic, is thus very suitable as over-current protection device.Excessive in order to reduce capacity load, momentary current is large, R4, C19 form RC delay circuit, and the acquiescence that powers on metal-oxide-semiconductor turns off, and then electric current is by C15 (super capacitor), R17 (current-limiting resistance) forms loop, D7 is 2.7V stabilivolt, and in charging process, it is that Q3 is opened that the voltage on R17 is greater than 2.7V, metal-oxide-semiconductor continues to turn off, and system charging current is 5V/1R (5A); When C15 voltage is about 2.5V, Q3 pipe is disconnected, and metal-oxide-semiconductor conducting, F2 and C15 completes charging jointly.
The size of current-limiting resistance depends primarily on the power of user's power-supply system; If the power ratio of user's power-supply system is comparatively large, so current-limiting resistance can be got a little bit smaller, if power is smaller, so resistance is got larger, notes the power of resistance simultaneously, if power supply maximum operating currenbt is 1A, voltage 5V, about so current-limiting resistance gets 5 Europe, power is 5W.This charging circuit is only limited to the very little super capacitor of internal resistance, such as pillar super capacitor, for the super capacitor that internal resistance is larger, then and need not current-limiting resistance, such as button super capacitor.
The Capacity Selection step of super capacitor is as follows:
C (F): the nominal capacity of electrochemical capacitance; R (Ohms): the nominal internal resistance of electrochemical capacitance; ESR (Ohms): equivalent series resistance under 1KZ; Vwork (V): normal working voltage
Vmin (V): cut-off operating voltage; T (s): require continuous working period in circuit;
Vdrop (V): at the end of electric discharge or heavy current pulse, total voltage drop; I (A): load current;
Can draw according to law of conservation of energy: keep the energy that institute's energy requirement=super capacitor reduces.
Institute energy requirement=1/2I (Vwork+ Vmin) t during maintenance; Electrochemical capacitance reduces energy=1/2C (Vwork ︿ 2-Vmin ︿ 2);
Thus can ignore because internal resistance is very little the power consumption caused by IR, then can draw:
C=(Vwork+ Vmin)It/( Vwork︿2 -Vmin︿2)
Such as:
Job initiation voltage Vwork=5V, work cut-off voltage Vmin=4V;
Working time t=1s working power I=4A;
C = 7.2F
As shown in Figure 4, power-fail detection circuit comprises stabilivolt, light emitting diode and optocoupler, and stabilivolt is connected with light emitting diode; Whether light emitting diode is interacted by light and optocoupler, normal for the power supply detecting power supply, if occur abnormal, carries out super capacitor and powers.D8 is 5.1V stabilivolt, and U4 is that light is even; During normal work: light is even to be opened, and check_VCC is high level; During abnormal work: be about 6.3V when 28V voltage drops to 5.1V+1.2V() time, light is even closes, and check_VCC is low level, and notice FPGA moves DDR data in SSD fast.
Claims (8)
1. the power-down protection apparatus preventing Raid data of magnetic disk array from losing, is characterized in that comprising power supply, isolation DC-DC, ideal diode circuit, power-down protection circuit, secondary power supply, FPGA and storer;
Described power-down protection circuit comprises super capacitor current-limiting charging circuit, power-fail detection circuit, super capacitor parallel circuit and power circuit commutation circuit;
Described power supply is connected with power-fail detection circuit with isolation DC-DC respectively;
Described isolation DC-DC is connected with ideal diode circuit;
Described ideal diode circuit is connected with power circuit commutation circuit with super capacitor current-limiting charging circuit respectively;
Described super capacitor current-limiting charging circuit is connected with super capacitor parallel circuit;
Described super capacitor parallel circuit is connected with power circuit commutation circuit;
Described power circuit commutation circuit is connected with secondary power supply;
Described power-fail detection circuit is connected with secondary power supply with power circuit commutation circuit respectively;
Described secondary power supply is connected with storer with FPGA respectively;
Described storer is connected with FPGA.
2. a kind of power-down protection apparatus preventing Raid data of magnetic disk array from losing as claimed in claim 1, is characterized in that the output voltage of described power supply is 28V.
3. a kind of power-down protection apparatus preventing Raid data of magnetic disk array from losing as claimed in claim 1, is characterized in that the output voltage of described isolation DC-DC is 5V.
4. a kind of power-down protection apparatus preventing Raid data of magnetic disk array from losing as claimed in claim 1, is characterized in that described ideal diode circuit comprises two MOS, and two MOS are that Mirror Symmetry is arranged.
5. a kind of power-down protection apparatus preventing Raid data of magnetic disk array from losing as claimed in claim 4, it is characterized in that described super capacitor current-limiting charging circuit comprises thermistor, and thermistor is series at power input.
6. a kind of power-down protection apparatus preventing Raid data of magnetic disk array from losing as claimed in claim 5, is characterized in that described thermistor is macromolecular PTC thermistor.
7. a kind of power-down protection apparatus preventing Raid data of magnetic disk array from losing as claimed in claim 5, it is characterized in that described power-fail detection circuit comprises stabilivolt, light emitting diode and optocoupler, stabilivolt is connected with light emitting diode; Light emitting diode is interacted by light and optocoupler.
8. a kind of power-down protection apparatus preventing Raid data of magnetic disk array from losing as claimed in claim 1, is characterized in that described storer is DDR storer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420855477.3U CN204302966U (en) | 2014-12-30 | 2014-12-30 | A kind of power-down protection apparatus preventing Raid data of magnetic disk array from losing |
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| CN201420855477.3U CN204302966U (en) | 2014-12-30 | 2014-12-30 | A kind of power-down protection apparatus preventing Raid data of magnetic disk array from losing |
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| CN204302966U true CN204302966U (en) | 2015-04-29 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337402A (en) * | 2015-11-26 | 2016-02-17 | 珠海许继电气有限公司 | DC5V dual-power-source switching device based on super-capacitor backup source |
| CN107885631A (en) * | 2017-12-27 | 2018-04-06 | 西安奇维科技有限公司 | A kind of end-to-end data protection system of massive store based on power down protection |
| CN109032319A (en) * | 2018-07-24 | 2018-12-18 | 郑州云海信息技术有限公司 | A kind of backup power supply system and storage system storing equipment |
| CN109032321A (en) * | 2018-07-27 | 2018-12-18 | 郑州云海信息技术有限公司 | A kind of RAID card power supply circuit |
| WO2023104196A1 (en) * | 2021-12-10 | 2023-06-15 | 广东省新一代通信与网络创新研究院 | Power failure alarm circuit for communication device, power failure alarm processing method for communication device, and communication device |
-
2014
- 2014-12-30 CN CN201420855477.3U patent/CN204302966U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337402A (en) * | 2015-11-26 | 2016-02-17 | 珠海许继电气有限公司 | DC5V dual-power-source switching device based on super-capacitor backup source |
| CN107885631A (en) * | 2017-12-27 | 2018-04-06 | 西安奇维科技有限公司 | A kind of end-to-end data protection system of massive store based on power down protection |
| CN109032319A (en) * | 2018-07-24 | 2018-12-18 | 郑州云海信息技术有限公司 | A kind of backup power supply system and storage system storing equipment |
| CN109032321A (en) * | 2018-07-27 | 2018-12-18 | 郑州云海信息技术有限公司 | A kind of RAID card power supply circuit |
| CN109032321B (en) * | 2018-07-27 | 2022-02-18 | 郑州云海信息技术有限公司 | RAID card power supply circuit |
| WO2023104196A1 (en) * | 2021-12-10 | 2023-06-15 | 广东省新一代通信与网络创新研究院 | Power failure alarm circuit for communication device, power failure alarm processing method for communication device, and communication device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Power failure protection device capable of preventing data loss of Raid disk array Effective date of registration: 20160115 Granted publication date: 20150429 Pledgee: Xi'an Taixin financing Company limited by guarantee Pledgor: Xi'an Keyway Technology Co.,Ltd. Registration number: 2015980000243 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20160831 Granted publication date: 20150429 Pledgee: Xi'an Taixin financing Company limited by guarantee Pledgor: Xi'an Keyway Technology Co.,Ltd. Registration number: 2015980000243 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 710000 Xi'an high tech Zone, Jin Industrial Road, No., No. C Venture Park, No. 8, Patentee after: Xi'an Qiwei Technology Co. Ltd. Address before: 710000 Xi'an high tech Zone, Jin Industrial Road, No., No. C Venture Park, No. 8, Patentee before: Xi'an Keyway Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20211027 Address after: 710117 No. a1-134, building 4, phase II, information industry park, No. 526, Xitai Road, high tech Zone, Xi'an, Shaanxi Province Patentee after: Xi'an siduoruizhi Information Technology Co.,Ltd. Patentee after: Leizhi digital system technology (Xi'an) Co.,Ltd. Address before: 710000 No. 8, C District, pioneering research and Development Park, 69 Jinye Road, hi tech Zone, Xi'an, Shaanxi Patentee before: XI'AN KEYWAY TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211208 Address after: 710117 a2-02, building 4, phase II, information industry park, No. 526, banxitai Road, Xinglong Street, high tech Zone, Xi'an, Shaanxi Province Patentee after: Leizhi digital system technology (Xi'an) Co.,Ltd. Address before: 710117 No. a1-134, building 4, phase II, information industry park, No. 526, Xitai Road, high tech Zone, Xi'an, Shaanxi Province Patentee before: Xi'an siduoruizhi Information Technology Co.,Ltd. Patentee before: Leizhi digital system technology (Xi'an) Co., Ltd |
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| TR01 | Transfer of patent right |