CN203012626U - Safe and reliable power supply system - Google Patents
Safe and reliable power supply system Download PDFInfo
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- CN203012626U CN203012626U CN 201220724563 CN201220724563U CN203012626U CN 203012626 U CN203012626 U CN 203012626U CN 201220724563 CN201220724563 CN 201220724563 CN 201220724563 U CN201220724563 U CN 201220724563U CN 203012626 U CN203012626 U CN 203012626U
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Abstract
The utility model provides a safe and reliable power supply system and mainly solves the problem that an embedded computer cannot normally work caused by the fact that existing single power supply modules fail and cannot normally supply power. The safe and reliable power supply system comprises multiple function modules and two power supply modules, one ends of the two power supply modules are connected with two external power supplies respectively, the other ends of the two power supply modules are connected with power supply converting circuits of the function modules respectively, and each power supply module comprises a power supply processing circuit, a power supply energy storage circuit, an isolating shunting circuit and an overcurrent protection circuit which are sequentially serially connected. The safe and reliable power supply system realizes power supply front end fault-tolerant capability and power supply rear end fault-isolating capability of a power supply system of the embedded computer, so that safe and reliable power supply capability of the power supply system of the embedded computer is improved.
Description
Technical field
The utility model provides a kind of power safety reliable power supply system, belongs to the embedded computer system designing technique.
Background technology
Along with improving constantly of embedded computer system functional performance, require its reliability fault-tolerant ability also to improve thereupon, and the power safety reliable power supply is the basic guarantee of the reliable fault-tolerant ability of synthesization computer system, if power system failure, the synthesization computer system just can't work.Tradition embedded computer power supply mode is to use a power module to whole computer power supply, and the various functional module power supplys in computing machine link together.
Above-mentioned power supply mode weak point be if power module break down can not normal power supply, whole computing machine can't be worked, and the power fail on functional module can't be isolated also can affect the normal function that other functional module normal operations also affect computing machine.
Power supply mode of the present invention is to adopt two block power supply module for power supply, and each functional module power supply is isolated mutually, to realize power supply front end failure tolerant ability and power supply rear end trouble isolation serviceability, reaches the purpose of safe and reliable power supply.
Summary of the invention
The utility model provides a kind of power safety reliable power supply system, and having solved mainly that existing single supply module breaks down can not normal power supply, thus the problem that causes embedded computer to work.
Concrete technical solution of the present utility model is as follows:
This power safety reliable power supply system comprises a plurality of functional modules and two power modules, and described two power module one ends are connected with two external power sources respectively, and two power module other ends are connected with the power-switching circuit of each functional module respectively; Described power module comprises power supply processing circuit, power supply tank circuit, isolation divided circuit and the current foldback circuit of series connection successively.
Above-mentioned power supply tank circuit is be used to carrying out the capacitor of power supply energy storage with reply 50ms moment power supply power-fail protection power supply.
Above-mentioned isolation divided circuit is one road input power to be isolated into the unilateral diode of multiple-output electric power.
Above-mentioned current foldback circuit is a plurality of protective tubes, and protective tube quantity is identical with functional module quantity and corresponding one by one.
The utility model has the advantage of:
This power safety reliable power supply system has realized that the Power supply front end of embedded computer power-supply system has the failure tolerant ability and the Power supply rear end has trouble isolation serviceability, thereby improves the safe and reliable power supply capacity of embedded computer power-supply system.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model power supply pretreating scheme theory diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail:
As shown in Figure 1, this power-supply system consists of safe and reliable supply network by the power-switching circuit on two power modules and functional module.Two power modules adopt 1+1 remaining backup mode to realize power supply front end fault-tolerant processing; Each functional module is taked independently-powered, makes the power fail in module not spread transmission to other modules, realizes the power fail isolation.
Outside 2 road power supplys are all sent into two power modules, and two power module outputs are powered to functional module simultaneously, and external power source and power module realize that all 1+1 is fault-tolerant like this.
External power source first carries out pre-service after entering power module, to solve overvoltage surge and peak surge problem.The pre-process circuit theory diagram as shown in Figure 2, step-down two port function circuit units of access between the input end of powering and consumer, form a divider wall, supply lines is conducted overvoltage surge and the peak surge of coming in present high-impedance state, this part high-risk Energy suppression is consumed, and under the normal power supply state, presenting low resistive state, power attenuation is very little.Utilize in addition the counnter attack characteristic of guiding circuit in circuit, realize fault tolerant electrical power supply, even in test, the outlet power supply adds anti-situation, can guarantee that also power supply does not damage, effectively raise the fault-tolerant ability of circuit.
The power supply tank circuit adopts capacitor to carry out the power supply energy storage and realizes 50ms moment power supply power-fail protection power supply.50ms moment power supply power-fail appears in external system, provides power supply not affect the computing machine normal operation to back-end function module continued power by capacitor.
The isolation divided circuit adopts unilateral diode that one road input power is isolated into multiple-output electric power, and the counnter attack characteristic of diode guiding circuit makes out-put supply not affect input power.
Current foldback circuit uses protective tube; different loads for functional module; select corresponding protective tube; after electric current surpasses default protection value; the fault fusing insurance thereby back-end circuit is short-circuited; malfunctioning module is excised from system, play fault isolation, prevent that fault from spreading the effect of expansion.The selection of protective tube is according to the maximum running current of protective tube, and this depends on operating power and the minimum operating voltage of load.After input is lower than 18V, 28V in functional module turns the 5V module will the under-voltage protection because voltage power supply is lower, consequently closes output, and functional module is not worked, electric current on protective tube is the standby current that 28V turns the under-voltage work of 5V module, is generally less than 10mA; When inputting at 18～36V normal power supply, functional module is working properly, power is real work power, and the electric current of protective tube is the working current of functional module, the electric current I when the maximum running current of protective tube is minimum normal power supply voltage (18V) at this moment
MAXThe selection of protective tube need to have the margin of operation of 1.5～2 times, prevents the rush of current of powered on moment and the insurance that fuses, so the corresponding protective tube of each functional module is all selected 2I
MAXInsurance.Electric current surpasses 2I on protective tube
MAXThereby protective tube fuses fault isolation.
Claims (4)
1. power safety reliable power supply system, it is characterized in that: comprise a plurality of functional modules and two power modules, described two power module one ends are connected with two external power sources respectively, and two power module other ends are connected with the power-switching circuit of each functional module respectively; Described power module comprises power supply processing circuit, power supply tank circuit, isolation divided circuit and the current foldback circuit of series connection successively.
2. power safety reliable power supply according to claim 1 system, it is characterized in that: described power supply tank circuit is be used to carrying out the power supply energy storage with the capacitor to 50ms moment power supply power-fail protection power supply.
3. power safety reliable power supply according to claim 2 system, it is characterized in that: described isolation divided circuit is one road input power to be isolated into the unilateral diode of multiple-output electric power.
According to claim 1 to 3 arbitrary described power safety reliable power supply system, it is characterized in that: described current foldback circuit is a plurality of protective tubes, protective tube quantity is identical with functional module quantity and corresponding one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220724563 CN203012626U (en) | 2012-12-25 | 2012-12-25 | Safe and reliable power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220724563 CN203012626U (en) | 2012-12-25 | 2012-12-25 | Safe and reliable power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203012626U true CN203012626U (en) | 2013-06-19 |
Family
ID=48604200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220724563 Expired - Lifetime CN203012626U (en) | 2012-12-25 | 2012-12-25 | Safe and reliable power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203012626U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485704A (en) * | 2014-12-05 | 2015-04-01 | 中国航空工业集团公司第六三一研究所 | Multi-channel dual-redundancy intelligent power supply management system |
| CN108932047A (en) * | 2018-06-26 | 2018-12-04 | 郑州云海信息技术有限公司 | A kind of isolation power supply board of GPU server |
-
2012
- 2012-12-25 CN CN 201220724563 patent/CN203012626U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485704A (en) * | 2014-12-05 | 2015-04-01 | 中国航空工业集团公司第六三一研究所 | Multi-channel dual-redundancy intelligent power supply management system |
| CN108932047A (en) * | 2018-06-26 | 2018-12-04 | 郑州云海信息技术有限公司 | A kind of isolation power supply board of GPU server |
| CN108932047B (en) * | 2018-06-26 | 2021-12-03 | 郑州云海信息技术有限公司 | Isolated power supply board of GPU server |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |