CN1728499A - Method and device of realizing hot plug for power distribution singleboard - Google Patents
Method and device of realizing hot plug for power distribution singleboard Download PDFInfo
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- CN1728499A CN1728499A CN 200410054864 CN200410054864A CN1728499A CN 1728499 A CN1728499 A CN 1728499A CN 200410054864 CN200410054864 CN 200410054864 CN 200410054864 A CN200410054864 A CN 200410054864A CN 1728499 A CN1728499 A CN 1728499A
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Abstract
The power supply system possesses voltage motherboard. Through connectors, multiple power distribution single boards are plugged to the said motherboard. The method is as follows. Detection unit in distribution single board detects signal of on-position of a distribution single board. The signal of on-position directs that when not on-position, the distribution single board generates signal of turn-off. The signal of turn-off controls the distribution single board to stop outputting voltage. The invention also discloses one kind of distribution single board.
Description
Technical field
The present invention relates to the power supply technique of the electronics or the communications field, relate in particular to a kind of method and device of realizing the hot plug of distribution veneer.
Background technology
In the communication apparatus power supply, in order to improve the power supply reliability of communication apparatus, general pair (many) power supplys that adopt are imported the reliability that supply power modes are come the safeguards system power supply, and after one tunnel power-fail, another road power supply provides power supply to system.How to detect power-fail effectively, how to handle, and how change veneer and do not influence effective work of system power supply, all will directly influence the power supply reliability of communication system in the power distribution circuit back of losing efficacy in input power supply overvoltage, after under-voltage.
Consult Fig. 1, electric power system is the two dc power supply input, and (the distribution veneer is meant the input veneer of device power supply (DPS) to input DC power, corresponding one tunnel input power supply of distribution veneer by the distribution veneer respectively.) link to each other with system, the output of two distribution veneers is closed the road on the system voltage motherboard.Output detection signal detects the power supply situation of distribution veneer output, and the distribution veneer reports the fault-signal of this position veneer when the out-put supply of this distribution veneer is undesired, and system is by the corresponding single board information of supervision and reporting.If veneer breaks down, the attendant changes the fault of distribution veneer recovery system.
In existing this electric power system, have the following disadvantages:
When 1, pulling out the distribution veneer of work under normal operation, system provides operating voltage by another veneer.Because there is stray inductance in the veneer that pulls out, the veneer that therefore pulls out work causes the power source bus sparking easily.
2, when the distribution veneer of changing is connected power line, the switch that need turn off this veneer earlier, could switch on after inserting well, be connected on the veneer if switch opened earlier, owing to the output voltage that inserts veneer may have certain difference to cause sparking with the voltage of system voltage motherboard, system voltage also can cause bigger impact.
In a word, the distribution veneer in the existing electric power system can not plug operation under charged situation, promptly can not hot plug.
Summary of the invention
The invention provides a kind of method and device of realizing the hot plug of distribution veneer, to solve the problem that distribution veneer in the prior art can not hot plug.
The invention provides following technical scheme:
A kind of method that realizes the hot plug of distribution veneer, described electric power system has the voltage motherboard, and a plurality of distribution veneers are plugged on the described voltage motherboard by connector; This method is:
A, detect the signal on the throne of distribution veneer by the detecting unit on the distribution veneer;
B, when described signal on the throne indication distribution veneer is not on the throne, produce cut-off signals;
C, described cut-off signals control distribution veneer stop output voltage.
When being plugged on described a plurality of distribution veneers on the described voltage motherboard by connector, power supply signal on distribution veneer and the voltage motherboard is connected prior to signal on the throne, correspondingly, with on the distribution veneer when the voltage motherboard separates, signal on the throne is disconnected prior to power supply signal.
A kind of distribution veneer, comprise the detecting unit that is used to detect input voltage, the fault detection unit that is used for detection failure is used for determining the feedback terminal that the distribution veneer is whether on the throne, and the slow start unit of opening or turn-off the output of distribution veneer according to the output signal of detecting unit; Whether on the throne wherein, described feedback terminal is electrically connected with detecting unit, provide the distribution veneer feedback signal by feedback terminal to detecting unit; Detecting unit is turn-offed the out-put supply of distribution veneer to slow start unit output cut-off signals by slow start unit when described feedback terminal provides distribution veneer feedback signal not on the throne.
Described detecting unit comprises under-voltage test section, the first input end of this under-voltage test section is connected with reference power source, second input is electrically connected with the input power supply and the described feedback terminal of distribution veneer, described distribution veneer feedback signal not on the throne is controlled the input voltage of the input voltage of second input less than first end, makes detecting unit to slow start unit output cut-off signals.
Connector on the described distribution veneer is a contact pin, and the connector on the voltage motherboard is a slot; The contact pin at described feedback terminal place is shorter than the contact pin at out-put supply place on the distribution veneer, when described distribution veneer being inserted the slot of described voltage motherboard, power supply is connected prior to described feedback terminal, and when the slot of voltage motherboard is extracted the distribution veneer, described feedback terminal is disconnected prior to power supply.
In the slot of voltage motherboard, the slot short circuit that cooperates with the feedback terminal and the power supply ground of distribution veneer.
No-output when adopting the present invention to guarantee that by the signal on the throne that detects the distribution veneer distribution veneer does not have insertion system, and when extracting, system turn-offs output earlier at the distribution veneer, thereby do not need to close power supply during the distribution single-board insert-pull, can not cause sparking and rush of current, can not cause system voltage fluctuation EVAC (Evacuation Network Computer Model) voltage yet.
Description of drawings
Fig. 1 is the theory diagram of duplicate supply input system distribution in the prior art;
Fig. 2 is the theory diagram of many power supplys input system distribution of the present invention;
Fig. 3 cooperates schematic diagram for the terminal and the system voltage motherboard terminal of distribution veneer among the present invention;
Fig. 4 is the circuit theory diagrams of the gentle start unit of detecting unit in the distribution veneer;
Fig. 5 is the circuit theory diagrams of fault detection unit.
Embodiment
Consult shown in Figure 2ly, electric power system is joined and can be supported two distribution direct currents inputs and many power supplys to import.The power supply ground BNGD of distribution veneer and the power supply ground BGND of system voltage motherboard link to each other, and direct current-48V links to each other by diode-isolated provides DC power supply to system.The veneer of output voltage maximum provides voltage as the work veneer to system, and other veneers are as Hot Spare power supply output current not.In case work veneer voltage occurs falling or no-output, provide voltage as the work veneer to system by the Hot Spare veneer of another piece output voltage maximum, guarantee the continuous power supply of the power source bus of system.The distribution veneer is under normal operating state, the light-coupled isolation output signal that a conducting is arranged, occur that veneer is not on the throne, during fault such as veneer input overvoltage, the veneer input is under-voltage, veneer no-output, warning output point AMA and AMB are off-state, system just can know by the conducting situation that detects light-coupled isolation output whether the distribution veneer occurs unusually, and notifies the maintenance staff in time to fix a breakdown.
The distribution veneer comprises filtering protective unit, accessory power supply, detecting unit, slow start unit and fault detection unit.The filtering protective unit has functions such as overvoltage absorption, overcurrent protection, EMC filtering, can allow system power supply be operated in safe operational environment.Accessory power supply is by the inlet highway power drives of distribution veneer, for detecting unit, slow start unit and fault detection unit provide DC low-voltage and voltage reference.Detecting unit is used to detect the whether overvoltage and under-voltage of input power supply of distribution veneer, and the slow start unit of output signal control.Have a feedback terminal that is used for determining that the distribution veneer is whether on the throne on the distribution veneer, the signal ON indication distribution veneer on the throne of feedback terminal is on the throne when the distribution veneer is inserted on the voltage motherboard, otherwise showing veneer is not on the throne.
In the present invention, detect the signal ON on the throne of distribution veneer by the detecting unit on the distribution veneer, and produce cut-off signals when this signal ON indication distribution veneer on the throne is not on the throne, the slow start unit of this cut-off signals control turn-offs the output voltage of distribution veneer.
As shown in Figure 3, the distribution veneer is connected by connector with the voltage motherboard.Connector on the distribution veneer is a contact pin, and the connector on the voltage motherboard is a slot.The contact pin at feedback terminal place is shorter than the contact pin at out-put supply place on the distribution veneer, when the distribution veneer being inserted the slot of voltage motherboard, power supply is connected prior to described feedback terminal, and when the slot of voltage motherboard is extracted the distribution veneer, feedback terminal is disconnected prior to power supply.
Power supply in the charged distribution veneer insertion system voltage motherboard process is connected (when the distribution veneer is not on the throne) distribution veneer no-output when signal ON on the throne is unsettled prior to feedback terminal.By feedback terminal power supply ground BGND signal feedback is returned when the distribution veneer is on the throne, the distribution veneer allows output.Through slow open circuit after, VOUT voltage slowly is raised to VSS voltage, because isolating diode is in rp state, the distribution veneer is exported at the slow process no current that opens, therefore charged distribution veneer does not have spark phenomenon when inserting, the voltage fluctuation phenomenon can not occur when newly inserting the distribution veneer yet.
In charged process of extracting the distribution veneer, because the ON terminal is shorter, prior to BGND and-48VOUT disconnects, this moment, ON was in vacant state, the slow metal-oxide-semiconductor that opens circuit of time-delay disconnects rapidly during through detecting unit output, diode is anti-phase by no current output, this moment BGND and-48VOUT can not cause spark phenomenon because of stray inductance when disconnecting.
Consult shown in Figure 4ly, VSS and BGND are the dc bus of veneer.Detecting unit is the core of veneer control, is made up of overvoltage test section and under-voltage test section.Resistance R 1, R2, R3, comparator U1A and U1B form common overvoltage, under-voltage comparison circuit.Overvoltage preset point VTH=2.5 * (R1+R2+R3)/R1, under-voltage preset point VTH=2.5 * (R1+R2+R3)/R1.
Capacitor C 1, resistance R 4, R5 and metal-oxide-semiconductor Q1 form the general slow circuit that opens, and through certain time-delay conducting gradually, open metal-oxide-semiconductor at last fully after TOUT is output as vacant state.
The distribution veneer is not when having insertion system voltage motherboard, and signal lines ON is a vacant state, and under-voltage comparator U1B is input as low level, under-voltage comparator output under-voltage condition, and detecting unit output TOUT is that the slow unit that opens of low level control turn-offs.
Behind distribution veneer insertion system voltage motherboard, veneer positive voltage BGND feeds back to the ON signal by the socket of system voltage motherboard by ON, this moment, ON and BGND were equipotential, by importing overvoltage comparator U1A and under-voltage comparator U1B after R1, R2, the R3 dividing potential drop respectively, at (VTL＜the VON＜VTH) of distribution veneer voltage bus voltage during in normal input, overvoltage comparator U1A and under-voltage comparator U1B are output as vacant state, and time-delay is slow opens circuit and start working.
When the voltage of detection signal ON is high level (VON＞VTH), TOUT voltage is dragged down, the VGS=0 of Q1, and metal-oxide-semiconductor turn-offs the purpose that reaches overvoltage protection.
(VON＜VTL), TOUT voltage is dragged down by U1B output, and metal-oxide-semiconductor turn-offs the purpose that arrives undervoltage turnoff when the voltage of detection signal ON is low level.
As shown in Figure 5, fault detection unit comprises comparator U1C and photoelectrical coupler O1, judges by the turning-on voltage that detects metal-oxide-semiconductor whether voltage has output.When metal-oxide-semiconductor turn-offed, VOUT was a high level, comparator U1C no-output (being that output state is a high-impedance state), and not conducting of optocoupler O1, secondary AMA and not conducting of AMB can be known corresponding distribution single board default through reporting the back system.After the metal-oxide-semiconductor conducting, VOUT and VSS equipotential, comparator U1C output low level, the elementary conducting of O1, secondary AMA and AMB conducting, corresponding distribution single board default reports and is normal condition.System can monitor the working condition of this veneer by effective detection.
System's power supply can not interrupted when the present invention was broken down at one road distribution loop, system can monitor veneer overvoltage, under-voltage and no-output fault timely and effectively, when safeguarding, change the distribution one-board power supply and need not outage, new distribution veneer can be switched on earlier before insertion system, output voltage turn-offs during warm swap distribution veneer, can be because of the new veneer that inserts and the different spark phenomenons that cause of power supply buses voltage of system.
Claims (11)
1, a kind of method that realizes the hot plug of distribution veneer, described electric power system has the voltage motherboard, and a plurality of distribution veneers are plugged on the described voltage motherboard by connector; It is characterized in that this method is:
A, detect the signal on the throne of distribution veneer by the detecting unit on the distribution veneer;
B, when described signal on the throne indication distribution veneer is not on the throne, produce cut-off signals;
C, described cut-off signals control distribution veneer stop output voltage.
2, the method for claim 1, it is characterized in that, when being plugged on described a plurality of distribution veneers on the described voltage motherboard by connector, power supply signal on distribution veneer and the voltage motherboard is connected prior to signal on the throne, correspondingly, with on the distribution veneer when the voltage motherboard separates, signal on the throne is disconnected prior to power supply signal.
3, a kind of distribution veneer, comprise the detecting unit that is used to detect input voltage, the fault detection unit that is used for detection failure is used for determining the feedback terminal that the distribution veneer is whether on the throne, and the slow start unit of opening or turn-off the output of distribution veneer according to the output signal of detecting unit; It is characterized in that described feedback terminal is electrically connected with detecting unit, provide the distribution veneer feedback signal whether on the throne to detecting unit by feedback terminal; Detecting unit is turn-offed the out-put supply of distribution veneer to slow start unit output cut-off signals by slow start unit when described feedback terminal provides distribution veneer feedback signal not on the throne.
4, distribution veneer as claimed in claim 3, it is characterized in that, described detecting unit comprises under-voltage test section, the first input end of this under-voltage test section is connected with reference power source, second input is electrically connected with the input power supply and the described feedback terminal of distribution veneer, described distribution veneer feedback signal not on the throne is controlled the input voltage of the input voltage of second input less than first end, makes detecting unit to slow start unit output cut-off signals.
5, distribution veneer as claimed in claim 4, it is characterized in that, described detecting unit also comprises the overvoltage test section, the first input end of this overvoltage test section is connected with reference power source, second input is electrically connected with the input power supply of distribution veneer, and output is connected with the output of described under-voltage test section; When the input voltage of second input makes detecting unit to slow start unit output cut-off signals during greater than the input voltage of first input end.
6, distribution veneer as claimed in claim 3 is characterized in that, the detection input of described fault detection unit is connected with the power output end of distribution veneer, and fault detection unit produces fault-signal when described slow start unit turn-offs output.
7, distribution veneer as claimed in claim 6, it is characterized in that, described fault detection unit comprises comparator and photoelectrical coupler, this comparator first input end is electrically connected with the power output end of distribution veneer, second input is connected with reference power source, and its output is connected with the control end of photoelectrical coupler; When power supply output was turned off, the input voltage of second input was greater than the input voltage of first input end, and described comparator input signal is controlled described photoelectrical coupler and produced fault-signal.
8, as each described distribution veneer of claim 3 to 7, it is characterized in that described feedback terminal is a contact pin, this contact pin is shorter than the contact pin of out-put supply on the distribution veneer.
9, a kind of electric power system, comprise the voltage motherboard, it is characterized in that also comprising a plurality of distribution veneers as claimed in claim 3, these a plurality of distribution veneers are fixed on the described voltage motherboard by connector, and provide voltage by the distribution veneer of output voltage maximum wherein for system.
10, electric power system as claimed in claim 9 is characterized in that, the connector on the described distribution veneer is a contact pin, and the connector on the voltage motherboard is a slot; The contact pin at described feedback terminal place is shorter than the contact pin at out-put supply place on the distribution veneer, when described distribution veneer being inserted the slot of described voltage motherboard, power supply is connected prior to described feedback terminal, and when the slot of voltage motherboard is extracted the distribution veneer, described feedback terminal is disconnected prior to power supply.
11, as claim 9 or 10 described electric power systems, it is characterized in that, in the slot of voltage motherboard, the slot short circuit that cooperates with the feedback terminal and the power supply ground of distribution veneer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100548648A CN100353642C (en) | 2004-07-31 | 2004-07-31 | Method and device of realizing hot plug for power distribution singleboard |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100548648A CN100353642C (en) | 2004-07-31 | 2004-07-31 | Method and device of realizing hot plug for power distribution singleboard |
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| CN1728499A true CN1728499A (en) | 2006-02-01 |
| CN100353642C CN100353642C (en) | 2007-12-05 |
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| CNB2004100548648A Expired - Fee Related CN100353642C (en) | 2004-07-31 | 2004-07-31 | Method and device of realizing hot plug for power distribution singleboard |
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| WO2009149637A1 (en) * | 2008-06-10 | 2009-12-17 | 华为技术有限公司 | Method, system and single board of supporting hot plug |
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| CN101257391B (en) * | 2008-04-21 | 2010-12-08 | 中兴通讯股份有限公司 | Single board managing method for miniature electric communication computing structure standard |
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| CN108736563A (en) * | 2017-04-24 | 2018-11-02 | 广达电脑股份有限公司 | Electronic device and power supply method thereof |
| CN107395182A (en) * | 2017-07-27 | 2017-11-24 | 万科思自控信息（中国）有限公司 | A kind of relaxed starter of split type equipment |
| CN114050714A (en) * | 2022-01-13 | 2022-02-15 | 苏州浪潮智能科技有限公司 | Method, circuit, device and medium for protecting PCIE (peripheral component interface express) card power supply |
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| CN100353642C (en) | 2007-12-05 |
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