CN102355126A

CN102355126A - Method for controlling synchronous power on of power supplies and control equipment

Info

Publication number: CN102355126A
Application number: CN201110281346XA
Authority: CN
Inventors: 黄金思
Original assignee: Beijing Star Net Ruijie Networks Co Ltd
Current assignee: Beijing Star Net Ruijie Networks Co Ltd
Priority date: 2011-09-21
Filing date: 2011-09-21
Publication date: 2012-02-15
Anticipated expiration: 2031-09-21
Also published as: CN102355126B

Abstract

The invention provides a method for controlling synchronous power on of power supplies and control equipment. The method comprises the following steps that: a power state monitoring module monitors the power output state indication signals of a plurality of switching power supplies to monitor the working state of each switching power supply; after a first switching power supply of which the power output state indication signal is changed from effective to ineffective occurs in the plurality of switching power supplies, a power supply control module sets the power output control signals of all the switching power supplies to be ineffective, and then according to the time interval from when the power output control signal of each switching power supply is effective to when the power output state indication signal is effective, the power supply control module sets the power output control signal of each switching power supply to be effective respectively, so that the power output state indication signals of all the switching power supplies are simultaneously effective. The technical scheme of the invention enables all the switching power supplies to be started simultaneously, thus solving the problem that the start sequence of the plurality of switching power supplies is inconsistent when a plurality of switching power supplies are used for supplying power in the prior art.

Description

Method and control appliance that the control power supply powers on synchronously

Technical field

The present invention relates to data communication technology, relate in particular to a kind of method and control appliance that power supply powers on synchronously of controlling.

Background technology

Along with the switch ports themselves capacity (each port capacity from 1G develop into 10G, 40G in addition to 100G) and the lifting of density, the power consumption of whole switch system is also increasing.To support that the 10G port is an example; Can accomplish about 10 watts (W) though the average power consumption of each 10G port is minimum at present; But 48 10G ports are arranged with every bracing cable card; It is example that complete machine has the switch of 16 ply-yarn drill groove positions; The power consumption of complete machine still can reach 7680W; Also have only about 2000W and general in the market power supply is generally the highest, therefore, when the complete machine full configuration, need use a plurality of power supplys and give power supply for exchange simultaneously.

Wherein, use a plurality of power supply parallel operation operations, have following advantage to the power supply of large power, electrically origin system: the one, low power power module can be combined into powerful power-supply system easily, and its capacity can be expanded arbitrarily; The 2nd, can realize the Redundancy Design of power-supply system, can improve the reliability of power-supply system; Three are to use occasion unrestricted, can make up as required, convenient, flexible; Four are to use a large amount of small-power powers to realize that the cost of large power, electrically origin system relatively can be lower.Therefore, using a plurality of power supply parallel operation operations is the main direction of power technology development to the power supply of large power, electrically origin system.

Power supply the most commonly used at present is a Switching Power Supply.Switching Power Supply generally all has the function of overcurrent protection, is exactly when output current surpasses the protection thresholding, and power supply output can be turn-offed, thereby stops output current; After through preset a period of time, Switching Power Supply can be attempted output again again, and this pattern is called as the pattern of having the hiccups.In the system that uses a plurality of power supply power supplies; If the precedence during a plurality of power initiation is different; The power supply that starts is owing to need provide the power of whole system work separately so earlier; And this has exceeded its rated range; Overcurrent protection will take place in this power supply like this, thus power cutoff output.Like this, when second power supply starts, the power of whole system need be provided still, equally also can power cutoff output.At this moment cause each power supply when off state reverts to normal output possibly, other power supplys get into off state again, and this will cause whole system to have no idea normally to power on, can't operate as normal.

Summary of the invention

The present invention provides a kind of method and control appliance that power supply powers on synchronously of controlling, and the inconsistent problem of a plurality of Switching Power Supply boot sequences is opened a plurality of Switching Power Supplies simultaneously when using a plurality of Switching Power Supplies to supply power in the prior art in order to solve.

The present invention provides a kind of method that power supply powers on synchronously of controlling, and comprising:

The power supply status monitoring module is monitored a plurality of parallel powerings and the power supply output state index signal of the Switching Power Supply that powered on, to monitor the operating state of each said Switching Power Supply;

Energy supply control module monitors at said power supply status monitoring module and occurs power supply output state index signal in said a plurality of Switching Power Supply by after effectively becoming the first invalid Switching Power Supply; It is invalid that the power supply of all Switching Power Supplies output control signal is changed to; Export control signal effectively to the effective time interval of power supply output state index signal according to each Switching Power Supply from power supply then; Power supply output control signal with each Switching Power Supply is changed to effectively respectively, so that the power supply output state index signal of all Switching Power Supplies simultaneously effectively.

The present invention provides a kind of control appliance, comprising:

The power supply status monitoring module is used to monitor a plurality of parallel powerings and the power supply output state index signal of the Switching Power Supply that powered on, to monitor the operating state of each said Switching Power Supply;

Energy supply control module; Be used for power supply output state index signal occurring by after effectively becoming the first invalid Switching Power Supply monitoring said a plurality of Switching Power Supply at said power supply status monitoring module; It is invalid that the power supply of all Switching Power Supplies output control signal is changed to; Export control signal effectively to the effective time interval of power supply output state index signal according to each Switching Power Supply from power supply then; Power supply output control signal with each Switching Power Supply is changed to effectively respectively, so that the power supply output state index signal of all Switching Power Supplies simultaneously effectively.

Method and control appliance that control power supply of the present invention powers on synchronously; The power supply output state index signal of a plurality of Switching Power Supplies of power supply status monitoring module monitoring parallel powering; To monitor whether operate as normal of each Switching Power Supply; When the power supply status monitoring module monitors power supply output state index signal when effectively becoming the first invalid Switching Power Supply; It is invalid that energy supply control module is changed to the power supply of all Switching Power Supplies output control signal; Promptly close the output of all Switching Power Supplies; Export control signal effectively to the effective time interval of power supply output state index signal according to each Switching Power Supply from power supply then; Output control signal with each Switching Power Supply is changed to effectively respectively; Promptly open the output of each Switching Power Supply again and make each Switching Power Supply produce electric current output simultaneously, thereby a plurality of Switching Power Supplies are opened simultaneously.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply; Obviously; Accompanying drawing in describing below is some embodiments of the present invention; For those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 for each method embodiment of the present invention based on the structural representation of many Switching Power Supplies electric power system;

The method flow diagram that the control power supply that Fig. 2 provides for one embodiment of the invention powers on synchronously;

The sequential chart of each signal of Switching Power Supply under the overcurrent protection state that Fig. 3 provides for one embodiment of the invention;

The structural representation of the control appliance that Fig. 4 provides for one embodiment of the invention;

The structural representation of the control appliance that Fig. 5 provides for another embodiment of the present invention;

Fig. 6 A is the structural representation of many Switching Power Supplies electric power system of providing of another embodiment of the present invention;

Fig. 6 B-Fig. 6 F is the signal timing diagram of the course of work of many Switching Power Supplies electric power system shown in Fig. 6 A Switching Power Supply.

Embodiment

For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer; To combine the accompanying drawing in the embodiment of the invention below; Technical scheme in the embodiment of the invention is carried out clear, intactly description; Obviously; Described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.

Fig. 1 for each method embodiment of the present invention based on the structural representation of many Switching Power Supplies electric power system.As shown in Figure 1, the system of present embodiment comprises: a plurality of Switching Power Supply 10, power connector 20 and control appliance 30.Wherein, control appliance 30 comprises power supply status monitoring module 31, energy supply control module 32 and power module 33.

As shown in Figure 1, power supply status monitoring module 31 is connected with each Switching Power Supply 10, is used to monitor the state of each Switching Power Supply 10, and whether for example monitoring Switching Power Supply 10, whether to have, monitor the output of Switching Power Supply 10 normal etc.Energy supply control module 32 also is connected with each Switching Power Supply 10, mainly is used for powering on of control switching 10 etc.In the present embodiment, power supply status monitoring module 31 is connected with energy supply control module 32 and carries out information interaction; Power module 33 is connected with energy supply control module 32 with power supply status monitoring module 31 respectively, and being used for provides power supply to power supply status monitoring module 31 and energy supply control module 32.

Wherein, the input of each Switching Power Supply 10 is connected with the electric main of outside 220 volts (V) or power supplys such as the direct current input of 380V; The output of all Switching Power Supplies 10 links together, and is connected in the system through power connector 20 or power supply backplane (not shown) etc., is used to provide system's operate as normal desired power.Wherein, the power supply of each Switching Power Supply 10 input can also can be from different circuits from identical circuit.

In various embodiments of the present invention, except power supply signal and earth signal, also have some status signals and control signal on the interface of Switching Power Supply 10.Main status signal and control signal comprise:

Have index signal (Present signal): whether this signal is used to refer to Switching Power Supply 10 and exists.The implementation of this signal is a ground connection on Switching Power Supply 10, draws in main frame, and be low if main frame detects this root signal, just can know has Switching Power Supply 10 to exist.That is to say that the Present signal is the effective signal of low level, effective with " # " expression low level in various embodiments of the present invention, then the Present signal can be designated as the Present# signal.Main frame is to use the equipment of Switching Power Supply 10 power supplies, for example switch, router etc.

Power supply output state index signal: whether normal this signal be the output of Switching Power Supply 10 index signal.When this root signal when low, illustrate that Switching Power Supply 10 normally export, when this root signal when being high, Switching Power Supply 10 is described less than exporting.Wherein, power supply output state index signal can be normal (the Power Good of power supply; Abbreviate as: PG) signal.That is to say that the PG signal is low, represent that this PG signal is effective; Otherwise, represent this PG invalidating signal.The PG signal also is the effective signal of low level, can be designated as the PG# signal.

Power supply output control signal: this signal is used for the output of control switching 10, and promptly control switching 10 powers on.When this root signal when low, Switching Power Supply 10 can output current, when this root signal when being high, Switching Power Supply 10 can not output current.Wherein, power supply output control signal can be that (Power Supply ON is opened in the power supply supply; Abbreviate as: PSON) signal.That is to say that the PSON signal is low, represent that this PSON signal is effective; Otherwise, represent this PSON invalidating signal.The PSON signal also is the effective signal of low level, can be designated as the PSON# signal.

Interface signal based on Switching Power Supply 10; Power supply status monitoring module 31 mainly is to be connected with the Present# signal of each Switching Power Supply 10 pin corresponding with the PG# signal in the present embodiment; Energy supply control module 32 mainly is that the pin corresponding with the PSON# signal of each Switching Power Supply 10 connects, specifically as shown in Figure 1.

The method flow diagram that the control power supply that Fig. 2 provides for one embodiment of the invention powers on synchronously.Present embodiment realizes that based on many Switching Power Supplies electric power system shown in Figure 1 as shown in Figure 2, the method for present embodiment comprises:

Step 201, power supply status monitoring module are monitored a plurality of parallel powerings and the PG# signal of the Switching Power Supply that powered on, to monitor the operating state of each Switching Power Supply.

As shown in Figure 1; The power supply status monitoring module is connected with the Present# signal of each Switching Power Supply pin corresponding with the PG# signal; Whether judge effectively through monitoring Present# signal whether Switching Power Supply exists, whether effectively judge whether normally output of Switching Power Supply through monitoring PG# signal.

Before step 201, whole electric power system need power on earlier.The power supply input that mainly is meant each Switching Power Supply that powers on of starting stage exists, and promptly need exist the electric main of 220V, the direct current of 380V or the direct current of 48V etc. for each Switching Power Supply power supply to be provided.Simultaneously, the power module in the control appliance is normally to the The whole control power devices, and at this moment, The whole control equipment just begins operate as normal.After control appliance began operate as normal, the power supply status monitoring module confirmed that at first through the Present# signal of each Switching Power Supply of monitoring each Switching Power Supply exists, and the information that exists that will identify each Switching Power Supply existence sends to energy supply control module.Wherein, exist information can be a pulse signal.Energy supply control module is changed to the PSON# signal of each Switching Power Supply of existing effectively after knowing that Switching Power Supply exists, and will identify the last electrical information that each Switching Power Supply powered on simultaneously and send to the power supply status monitoring module.Wherein, last electrical information can be a pulse signal.At this moment, the power supply status monitoring module knows that according to the last electrical information of each Switching Power Supply that receives Switching Power Supply powers on; And according to the characteristic of Switching Power Supply; Switching Power Supply is after the back a period of time that powers on; The PG# signal of Switching Power Supply will become effectively from invalid; So the power supply status monitoring module is through the PG# signal of monitoring Switching Power Supply; Monitor the operating state of the Switching Power Supply after powering on, normally whether the Switching Power Supply after promptly monitoring powers on output current.

Wherein, the PG# signal that causes Switching Power Supply possibly be that overcurrent protection, overheat protector or power failure etc. have taken place from effectively becoming invalid situation.Wherein, because power failure generally is expendable, so present embodiment does not relate to this situation of power failure.And for the Switching Power Supply power up, overheat protector generally can not take place, because system does not also work together.But; Operation along with system; When overheat protector takes place when; Also can produce the problem similar, promptly also can cause the Switching Power Supply boot sequence inconsistent, therefore with overcurrent protection; In various embodiments of the present invention; Cause the PG# signal mainly to be meant the generation overcurrent protection by effectively becoming invalid reason in system power-on phase, but after system operation a period of time, causing the PG# signal both can be that overcurrent protection has taken place also can be that overheat protector has taken place by effectively becoming invalid reason.That is to say that technical scheme of the present invention is not only applicable to the inconsistent sight of Switching Power Supply boot sequence that caused by overcurrent protection, is equally applicable to the inconsistent sight of Switching Power Supply boot sequence that other factors cause.

Further, because the phenomenon of having the hiccups of overcurrent protection is more common, and has more representativeness, so be that example describes all in the various embodiments of the present invention with this situation.

The PG# signal that monitors the Switching Power Supply after powering on when the power supply status monitoring module by invalid become effectively after, illustrate that Switching Power Supply normally exports.Become again after effective a period of time when invalid when the power supply status monitoring module monitors the PG# signal, illustrate that overcurrent protection has taken place this Switching Power Supply.For ease of distinguishing, present embodiment is called first Switching Power Supply with the PG# signal that the power supply status monitoring module monitors by effectively becoming invalid Switching Power Supply.

At this moment, the power supply status monitoring module will have the information synchronization of Switching Power Supply generation overcurrent protection to give energy supply control module.

Wherein, The power supply status monitoring module will have the information synchronization of Switching Power Supply generation overcurrent protection to be for a kind of execution mode of energy supply control module: the power supply status monitoring module is monitoring the PG# signal when effectively becoming the first invalid Switching Power Supply; Continue the PG# signal of monitoring first Switching Power Supply; And become when effective by invalid again at the PG# signal that monitors first Switching Power Supply, first state change information of the PG# signal of first Switching Power Supply is announced to energy supply control module.Wherein, first state change information of PG# signal is meant that mainly the PG# signal is become effectively by invalid in first Switching Power Supply back that powers on, and is invalid by effectively becoming again, becomes effective information again again by invalid again.After energy supply control module receives first state change information of PG# signal, will know that overcurrent protection has taken place first Switching Power Supply.

The power supply status monitoring module will have the information synchronization of Switching Power Supply generation overcurrent protection to be for the another kind of execution mode of energy supply control module: the power supply status monitoring module PG# signal occurs when effectively becoming the first invalid Switching Power Supply in monitoring a plurality of Switching Power Supplies, immediately second state change information of the PG# signal of first Switching Power Supply is announced to energy supply control module.Wherein, second state change information of PG# signal is meant that mainly the PG# signal is become effectively by invalid after first Switching Power Supply powers on, again by effectively becoming invalid information.After energy supply control module receives second state change information of PG# signal, will know that overcurrent protection has taken place first Switching Power Supply.

Step 202, energy supply control module monitor at the power supply status monitoring module and occur the PG# signal in a plurality of Switching Power Supplies by after effectively becoming the first invalid Switching Power Supply; It is invalid that the PSON# signal of all Switching Power Supplies is changed to; Then according to each Switching Power Supply from the PSON# signal effectively to the effective time interval of PG# signal; PSON# signal with each Switching Power Supply is changed to effectively respectively, so that the PG# signal of all Switching Power Supplies simultaneously effectively.

After energy supply control module knew that Switching Power Supply generation overcurrent protection is arranged, it is invalid that the PSON# signal of the Switching Power Supply of all existence is changed to, and is about to all Switching Power Supplies all down; Then, power on for again each Switching Power Supply, the problem that the whole system that causes with the solution overcurrent protection can't normally power on.In the process of powering on for again each Switching Power Supply; Need guarantee that each Switching Power Supply starts simultaneously; Need guarantee that promptly each Switching Power Supply produces electric current output simultaneously; Just require the PG# signal of each Switching Power Supply to come into force simultaneously, so just can avoid the Switching Power Supply boot sequence inconsistent and produce and the similar problem of overcurrent protection.Because different Switching Power Supplies are effectively different to the effective time interval of PG# signal from the PSON# signal; So the energy supply control module of present embodiment according to each Switching Power Supply from the PSON# signal effectively to the effective time interval of PG# signal; Time and sequencing that control powers on for each Switching Power Supply come into force with the PG# signal that guarantees each Switching Power Supply simultaneously.

Though different Switching Power Supplies are effectively different to the effective time interval of PG# signal from the PSON# signal; But same Switching Power Supply effectively generally can not change to the effective time interval of PG# signal from the PSON# signal, thus in the present embodiment each Switching Power Supply from the PSON# signal effectively to the effective time interval of PG# signal can be to obtain in advance and be stored in the energy supply control module.This execution mode implements fairly simple, but is not limited to this a kind of execution mode.

In addition; Consider that Switching Power Supply may change; When so present embodiment can also receive the last electrical information of each Switching Power Supply of energy supply control module announcement for the first time by the power supply status monitoring module; Through the PG# signal of monitoring each Switching Power Supply obtain each Switching Power Supply from the PSON# signal effectively to the effective time interval of PG# signal, each Switching Power Supply that will obtain is then effectively announced to energy supply control module to the effective time interval of PG# signal from the PSON# signal.In this embodiment, the power supply status monitoring module only can carry out one-shot measurement to each Switching Power Supply when electric power system is just started working.Further; The power supply status monitoring module can also measure in real time each Switching Power Supply from the PSON# signal effectively to the effective time interval of PG# signal; When promptly whenever receiving the last electrical information of each Switching Power Supply of energy supply control module announcement; Just through the PG# signal of monitoring each Switching Power Supply obtain each Switching Power Supply from the PSON# signal effectively to the effective time interval of PG# signal, and each Switching Power Supply that will at every turn obtain is effectively announced to energy supply control module to the effective time interval of PG# signal from the PSON# signal.

Wherein, A kind of power supply status monitoring module is according to the last electrical information of each Switching Power Supply that receives; Monitor the PG# signal of each Switching Power Supply; To obtain each Switching Power Supply from the PSON# signal effectively to the execution mode in the effective time interval of PG# signal be: the power supply status monitoring module is on each Switching Power Supply that receives during electrical information; For each Switching Power Supply starts a counter, this counter begins counting; Become when effective at the PG# of each Switching Power Supply signal then, close the corresponding counter of each Switching Power Supply.Then, the power supply status monitoring module is according to the count value of the corresponding counter of each Switching Power Supply, obtain each Switching Power Supply from the PSON# signal effectively to the effective time interval of PG# signal.For example: the count value of the counter that the power supply status monitoring module is can be directly corresponding with each Switching Power Supply as each Switching Power Supply from the PSON# signal effectively to the effective time interval of PG# signal.Again for example: the count value of the counter that the power supply status monitoring module can also be corresponding with each Switching Power Supply and the clock cycle of counter multiply each other, and with multiplied result as each Switching Power Supply from the PSON# signal effectively to the effective time interval of PG# signal.

Further, the power supply status monitoring module judged to begin from the last electrical information that receives each Switching Power Supply that the PG# signal that whether in preset monitoring time, monitors each Switching Power Supply becomes effectively before closing the corresponding counter of each Switching Power Supply.If judged result is for being, the PG# signal that the power supply status monitoring module is just carried out in each Switching Power Supply becomes when effective, closes the operation of the corresponding counter of each Switching Power Supply.If judged result is for denying; The power supply status monitoring module does not become the corresponding counter of effective Switching Power Supply with the PG# signal in preset monitoring time closes, and the PG# signal does not become the PG# signal of effective Switching Power Supply in preset monitoring time third state change information is announced to energy supply control module.It is invalid that energy supply control module does not become effective Switching Power Supply with the PG# signal in preset monitoring time PSON# signal is changed to.Wherein, the third state change information of PG# signal is meant that behind the respective switch power supply electrifying PG# signal does not become effective information always when preset monitoring time finishes.Wherein, monitoring time is meant that each Switching Power Supply is powered on to begin to count, and the PG# signal becomes the effective time interval by invalid.The value of monitoring time can be set according to concrete Switching Power Supply, and present embodiment is not done qualification to the value of monitoring time.Through this execution mode, can solve the Switching Power Supply fault and the problem that causes system to power on.

The method that present embodiment control power supply powers on synchronously; The PG# signal of a plurality of Switching Power Supplies of power supply status monitoring module monitoring parallel powering; To monitor whether operate as normal of each Switching Power Supply; When the power supply status monitoring module monitors the PG# signal when effectively becoming the first invalid Switching Power Supply; It is invalid that energy supply control module is changed to the PSON# signal of all Switching Power Supplies; Promptly close the output of all Switching Power Supplies; Then according to each Switching Power Supply from the PSON# signal effectively to the effective time interval of PG# signal; PSON# signal with each Switching Power Supply is changed to effectively respectively; Promptly open the output of each Switching Power Supply again and make each Switching Power Supply produce electric current output simultaneously; Thereby a plurality of Switching Power Supplies are opened simultaneously, solved because of the inconsistent problem that causes of Switching Power Supply unlatching order.

In the above-described embodiments; A kind of execution mode of step 202 is: the power supply status monitoring module is monitoring the PG# signal when effectively becoming the first invalid Switching Power Supply; Continue the PG# signal of monitoring first Switching Power Supply; And become when effective by invalid again at the PG# signal that monitors first Switching Power Supply, first state change information of the PG# signal of first Switching Power Supply is announced to energy supply control module.In addition, the power supply status monitoring module, is announced first state change information of the PG# signal of other Switching Power Supplies to energy supply control module by effectively becoming invalid becoming again again when effective at the PG# signal that monitors other Switching Power Supplies.

Energy supply control module is when first state change information of the PG# signal of first Switching Power Supply that receives the announcement of power supply status monitoring module; It is invalid that the PSON# signal of first Switching Power Supply is changed to; And when first state change information of the PG# signal of other Switching Power Supplies that receive power supply status monitoring module announcement; It is invalid that the PSON# signal of other Switching Power Supplies is changed to, up to the PSON# signal with all Switching Power Supplies be changed to invalid till.

This execution mode is when finding the Switching Power Supply of overcurrent protection takes place; Do not give under this Switching Power Supply immediately; Promptly still keep the PSON# signal of this Switching Power Supply effective; But from overcurrent protection, withdraw from this Switching Power Supply; Can guarantee that like this each Switching Power Supply can both withdraw from from the overcurrent protection state after, power on for again each Switching Power Supply.The power supply status monitoring module will have the information synchronization of Switching Power Supply generation overcurrent protection to give first kind of execution mode of energy supply control module corresponding in this execution mode and the step 201.

The power supply status monitoring module will have the information synchronization of Switching Power Supply generation overcurrent protection to give second kind of execution mode of energy supply control module corresponding in the another kind of execution mode of step 202 and the step 201; Be specially: the power supply status monitoring module PG# signal occurs when effectively becoming the first invalid Switching Power Supply in monitoring a plurality of Switching Power Supplies, immediately second state change information of the PG# signal of first Switching Power Supply is announced to energy supply control module.Energy supply control module is when second state change information of the PG# signal of first Switching Power Supply that receives power supply status monitoring module announcement, and it is invalid directly the PSON# signal of all Switching Power Supplies to be changed to.The efficient that this execution mode can acceleration synchronization powers on.

Below in conjunction with electric power system shown in Figure 1, be example with a kind of preferred implementation of the present invention, describe the flow process that control power supply of the present invention powers on synchronously in detail.

In the incipient stage, electric power system shown in Figure 1 will power on earlier.If the direct current of the electric main of 220V or 380V exists, just lay the foundation for each Switching Power Supply 10 operate as normal.When power module 33 during normally to the The whole control power devices, The whole control equipment just can have been started working.

At first, power supply status monitoring module 31 can be monitored the existence of each Switching Power Supply 10, and gives energy supply control module 32 synchronously with the existence of each Switching Power Supply 10.

After energy supply control module 32 receives the existence of each Switching Power Supply 10; The PSON# signal of the Switching Power Supply 10 that exists is changed to effectively (soon the PSON# signal is changed to low level); Make Switching Power Supply 10 begin to power on, give power supply status monitoring module 31 with the information synchronization that powers on of Switching Power Supply 10 simultaneously.

The PG# signal of the already present Switching Power Supply 10 of power supply status monitoring module 31 monitoring, to obtain the output state of each Switching Power Supply 10, write down simultaneously each Switching Power Supply 10 from the PSON# signal effectively to the effective time interval of PG# signal, be designated as T1.Power supply status monitoring module 31 should be given energy supply control module 32 by time interval T1 synchronously.

If monitoring the PG# signal in preset monitoring time, power supply status monitoring module 31 do not become low (being that the PG# signal fails to become effectively from invalid); Illustrate that Switching Power Supply 10 fails normal output; Also just illustrate that this Switching Power Supply 10 has problem; This Switching Power Supply 10 is labeled as trouble power, and gives energy supply control module 32 synchronously the state change information of the PG# signal of this Switching Power Supply 10.At this moment, the state change information of the PG# signal of Switching Power Supply 10 is meant that mainly this PG# signal fails in preset monitoring time, to become low level by high level.Energy supply control module 32 is according to the state change information of the PG# signal that receives, and it is invalid that the PSON# signal of this Switching Power Supply 10 is changed to.Wherein, the occurrence of monitoring time can be according to concrete Switching Power Supply setting.

Become lowly if power supply status monitoring module 31 monitors the PG# signal in preset monitoring time, illustrate that Switching Power Supply 10 has begun normally to have exported.Then the PG# signal of Switching Power Supplies 10 is monitored in 31 continuation of power supply status monitoring module, and can also write down the PG# signal simultaneously is the low time, is designated as T2.If the PG# signal of all Switching Power Supplies 10 all remains low level state always, illustrate that all Switching Power Supplies 10 have normally started, at this moment, it is that the PSON# signal of low Switching Power Supply 10 is for effectively that energy supply control module 32 will keep each PG# signal.When Switching Power Supply 10 power supply finished, T2 write down was Switching Power Supply 10 whole power-on time in power supply process.

After effective a bit of time, become invalidly again when power supply status monitoring module 31 monitors the PG# signal, illustrate that overcurrent protection possibly take place this Switching Power Supply 10.For the ease of follow-up Switching Power Supply 10 is carried out state analysis, power supply status monitoring module 31 can write down Switching Power Supply 10 from PG# effectively to the invalid time interval of PG#, be designated as T3.T3 has write down Switching Power Supply 10 and after work how long, fault has taken place.

Below in conjunction with the sequential relationship of each signal of Switching Power Supply shown in Figure 3 in the overcurrent protection process, in case when certain Switching Power Supply generation overcurrent protection is described, the problem that whole electric power system possibly run into.

At first hypothesis has three Switching Power Supplies to supply power to system, and the power consumption in the system needs three Switching Power Supplies to have output just can satisfy simultaneously.In Fig. 3, represent the PG# signal of three Switching Power Supplies respectively with PG1, PG2, PG3.As shown in Figure 3:

At t1 constantly, first Switching Power Supply begins output, and PG1 is that low level shows that first Switching Power Supply output is normal.

At t2 constantly, second Switching Power Supply begins output, and PG2 is that low level shows that second Switching Power Supply output is normal.

At t3 constantly, the inner over-current detection circuit of first Switching Power Supply detects overcurrent, the output of beginning off switch power supply; At this moment, PG1 is that high level shows the not output of first Switching Power Supply.

At t4 constantly, the 3rd Switching Power Supply begins output, and PG3 is that low level shows that the 3rd Switching Power Supply output is normal.

At t5 constantly, second inner over-current detection circuit of Switching Power Supply detects overcurrent, the output of beginning off switch power supply; At this moment, PG2 is that high level shows the not output of second Switching Power Supply.

At t6 constantly, first Switching Power Supply is restarted output, and at this moment, PG1 is that low level shows that first Switching Power Supply output is normal.

At t7 constantly, the 3rd the inner over-current detection circuit of Switching Power Supply detects overcurrent, the output of beginning off switch power supply; At this moment, PG3 is that high level shows the not output of the 3rd Switching Power Supply.

At t8 constantly, second Switching Power Supply restarted output, and at this moment, PG2 is that low level shows that second Switching Power Supply normally export.

At t9 constantly, the inner over-current detection circuit of first Switching Power Supply detects overcurrent once more, again the output of off switch power supply; At this moment, PG1 is that high level shows the not output of first Switching Power Supply.

At t10 constantly, the 3rd Switching Power Supply restarted output, and at this moment, PG3 is that low level shows that the 3rd Switching Power Supply normally export.

At t11 constantly, second inner over-current detection circuit of Switching Power Supply detects overcurrent once more, the output of off switch power supply again, and at this moment, PG2 is that high level shows the not output of second Switching Power Supply.

At t12 constantly, first Switching Power Supply begins new once trial output, and at this moment, PG1 is that level shows that first Switching Power Supply normally exports.

At t13 constantly, Switching Power Supply 3 inner over-current detection circuits detect overcurrent once more, off switch power supply output again;

At t14 constantly, second Switching Power Supply begins new once trial output, and at this moment, PG2 is that low level shows that second Switching Power Supply normally export.

Said process can constantly continue, and makes whole system normally to power on, thereby can't operate as normal.

By above-mentioned visible, in case certain Switching Power Supply generation overcurrent protection probably causes the whole system can't operate as normal, therefore under the situation of Switching Power Supply generation overcurrent protection, can operate as normal for the assurance system, need to give each Switching Power Supply re-power.In the present embodiment; All Switching Power Supplies 10 have all withdrawed from the overcurrent protection state in order to guarantee to re-power; The PG# signal that monitors Switching Power Supply at power supply status monitoring module 31 is by effectively becoming when invalid; Energy supply control module 32 still keeps the PSON# signal of this Switching Power Supply for effective; Like this, each Switching Power Supply 10 just all can get into the overcurrent protection state; Become when effective by invalid when power supply status monitoring module 31 monitors the PG# signal again, illustrate that corresponding switch power supply 10 has withdrawed from from over-current state, at this moment, it is invalid that energy supply control module 32 is changed to the PSON# signal of this Switching Power Supply 10.

After confirming that all Switching Power Supplies 10 have all withdrawed from over-current state, energy supply control module 32 is changed to the PSON# signal of each Switching Power Supply 10 effectively again.In this process; Consider each Switching Power Supply 10 from the PSON# signal effectively to the effective time interval of PG# signal; Be that we write down T1 before; Be energy supply control module 32 according to each Switching Power Supply 10 from the PSON# signal effectively to the effective time interval of PG# signal; Control is changed to effective sequencing with the PSON# signal of each Switching Power Supply 10; PG# signal to guarantee each Switching Power Supply 10 is effective simultaneously, so just can guarantee that each power module has started simultaneously.

Further; In the present embodiment; Power supply status monitoring module 31 has write down the time of Switching Power Supply 10 under various operating states; For example from the PSON# signal effectively to the effective time T of PG# signal 1, Switching Power Supply 10 whole power-on time T2 and the Switching Power Supply 10 power supply process from the PG# signal effectively to time T 3 of PG# invalidating signal etc., these times have been reflected the operating state of Switching Power Supply 10 to a certain extent.So when certain Switching Power Supply 10 breaks down, can help finding out Switching Power Supply 10 in the reason that breaks down, help Switching Power Supply 10 is safeguarded through these times of this Switching Power Supply 10 of record are repeatedly analyzed.

In this explanation, the output state that various embodiments of the present invention use the PG# signal to monitor Switching Power Supply only is a kind of execution mode.For example: for supporting overcurrent (OverCurrent; Abbreviate as: the OC) Switching Power Supply of condition managing, can judge whether Switching Power Supply overcurrent protection has taken place through the signal of monitoring OC pin.Wherein, the signal on monitoring the OC pin can confirm to have taken place overcurrent protection when effective by invalid becoming.

The structural representation of the control appliance that Fig. 4 provides for one embodiment of the invention.As shown in Figure 4, the control appliance of present embodiment comprises: power supply status monitoring module 41 and energy supply control module 42.

Wherein, power supply status monitoring module 41 is connected with Switching Power Supply, is used to monitor a plurality of parallel powerings and the PG# signal of the Switching Power Supply that powered on, to monitor the operating state of each Switching Power Supply.Energy supply control module 42; Be connected with power supply status monitoring module 41 with Switching Power Supply; Be used for monitoring a plurality of Switching Power Supplies and the PG# signal occur by after effectively becoming the first invalid Switching Power Supply at power supply status monitoring module 41; It is invalid that the PSON# signal of all Switching Power Supplies is changed to; Then according to each Switching Power Supply from the PSON# signal effectively to the effective time interval of PG# signal; PSON# signal with each Switching Power Supply is changed to effectively respectively, so that the PG# signal of all Switching Power Supplies simultaneously effectively.

Control appliance in the control appliance of the present embodiment electric power system just shown in Figure 1, its each functional module can be used for carrying out the method flow that control power supply shown in Figure 2 powers on synchronously, and its concrete operation principle repeats no more at this.

The control appliance of present embodiment; Monitor the PG# signal of a plurality of Switching Power Supplies of parallel powering by its power supply status monitoring module; To monitor whether operate as normal of each Switching Power Supply; When the power supply status monitoring module monitors the PG# signal when effectively becoming the first invalid Switching Power Supply; It is invalid that its energy supply control module is changed to the PSON# signal of all Switching Power Supplies; Promptly close the output of all Switching Power Supplies; Then according to each Switching Power Supply from the PSON# signal effectively to the effective time interval of PG# signal; PSON# signal with each Switching Power Supply is changed to effectively respectively; Promptly open the output of each Switching Power Supply again and make each Switching Power Supply produce electric current output simultaneously; Thereby a plurality of Switching Power Supplies are opened simultaneously, solved because of the inconsistent problem that causes of Switching Power Supply unlatching order.

The structural representation of the control appliance that Fig. 5 provides for another embodiment of the present invention.Present embodiment is based on realization embodiment illustrated in fig. 4, and as shown in Figure 5, the control appliance of present embodiment also comprises power module 43.

Power module 43 is connected with energy supply control module 42 with power supply status monitoring module 41 respectively, to power supply status monitoring module 41 and energy supply control module 42 power supply is provided.

At present; Most of Switching Power Supplies have standby (Standby) power supply, and the Standby of Switching Power Supply output is not subjected to the control of PSON# signal, no matter the state of PSON# signal how; For the Switching Power Supply that has Standby output, its Standby power supply has output always.Usually, support the main power source of the Switching Power Supply of Standby output to be generally 12V or 48V etc., its Standby power supply generally is 3.3V or 5V etc., and the electric current of Standby power supply output generally has only several amperes.Based on this, the power module 43 of present embodiment can be realized by the Standby power supply of Switching Power Supply.For example:, can select the Standby power supply of one or more Switching Power Supplies to come control appliance power supply to present embodiment according to the power consumption demand of control appliance.

Wherein, A kind of operation principle of the power supply status monitoring module 41 of present embodiment is specially: power supply status monitoring module 41 the PG# signal occurs when effectively becoming the first invalid Switching Power Supply in monitoring a plurality of Switching Power Supplies; Continue the PG# signal of monitoring first Switching Power Supply; And become when effective by invalid again at the PG# signal that monitors first Switching Power Supply; First state change information of the PG# signal of first Switching Power Supply is announced to energy supply control module 42; And at the PG# signal that monitors other Switching Power Supplies by effectively becoming invalid becoming again again when effective, first state change information of the PG# signal of other Switching Power Supplies is announced to energy supply control module 42.

Correspondingly; Energy supply control module 42 specifically is used for when first state change information of the PG# signal of first Switching Power Supply that receives 41 announcements of power supply status monitoring module; It is invalid that the PSON# signal of first Switching Power Supply is changed to; And when first state change information of the PG# signal of other Switching Power Supplies that receive power supply status monitoring module 41 announcement, it is invalid that the PSON# signal of other Switching Power Supplies is changed to.

Above-mentioned power supply status monitoring module 41 and energy supply control module 42 can be used for the flow process of first kind of execution mode of execution in step 202, and its concrete operation principle repeats no more.

Further; The another kind of operation principle of the power supply status monitoring module 41 of present embodiment is specially: power supply status monitoring module 41 can also specifically be used for the PG# signal occurring when effectively becoming the first invalid Switching Power Supply monitoring a plurality of Switching Power Supplies, and second state change information of the PG# signal of first Switching Power Supply is announced to energy supply control module 42.

Correspondingly, energy supply control module 42 specifically is used for when second state change information of the PG# signal of first Switching Power Supply that receives power supply status monitoring module 41 announcement, and it is invalid directly the PSON# signal of all Switching Power Supplies to be changed to.

Above-mentioned power supply status monitoring module 41 and energy supply control module 42 can be used for the flow process of second kind of execution mode of execution in step 202, and its concrete operation principle repeats no more.

On the basis of above-mentioned two kinds of operation principles; When power supply status monitoring module 41 specifically is used on each Switching Power Supply that receives electrical information; For each Switching Power Supply starts a counter; And become when effective at the PG# of each Switching Power Supply signal; Close the corresponding counter of each Switching Power Supply; Then according to the count value of the corresponding counter of each Switching Power Supply, obtain each Switching Power Supply from the PSON# signal effectively to the effective time interval of PG# signal.

Further; Power supply status monitoring module 41 is used to also judge that the last electrical information from receiving each Switching Power Supply begins; The PG# signal that whether in preset monitoring time, monitors each Switching Power Supply becomes effectively; When judged result when being; Just carry out at the PG# of each Switching Power Supply signal and become when effective, close the operation of the corresponding counter of each Switching Power Supply; When judged result for not the time, the third state change information that the PG# signal is not become the PG# signal of effective Switching Power Supply in preset monitoring time is announced to energy supply control module 42.It is invalid that energy supply control module 42 also is used for the PG# signal does not become effective Switching Power Supply in preset monitoring time PSON# signal is changed to.

Further, power supply status monitoring module 41 also is used to monitor the Present# signal of each Switching Power Supply, confirms that each Switching Power Supply exists, and the information that exists that will identify each Switching Power Supply existence sends to energy supply control module 42.The said information that exists can be a pulse signal.

Energy supply control module 42 also is used for the PSON# signal of each Switching Power Supply is changed to effectively, and will identify the last electrical information that each Switching Power Supply powered on and send to power supply status monitoring module 41.The level value that electrical information can comprise the PSON# signal when each Switching Power Supply of sign has powered on should be gone up, specifically a pulse signal can be.

Power supply status monitoring module 41 also is used for the last electrical information according to each Switching Power Supply that receives; Monitor the PG# signal of each Switching Power Supply; With obtain each Switching Power Supply from the PSON# signal effectively to the effective time interval of PG# signal, and each Switching Power Supply that will obtain effectively sends to energy supply control module 42 to the effective time interval of PG# signal from the PSON# signal.

In practical application, power supply status monitoring module 41 can be by CPLD (Complex Programmable Logic Device; Abbreviate as: CPLD) or field programmable gate array (Field-Programmable Gate Array; Abbreviate as: FPGA) realize; Energy supply control module 42 also can be realized by CPLD or FPGA.Further, the clock of the counter in the power supply status monitoring module 41 can be realized by high frequency clock, and the frequency of high frequency clock is high more, and count value is accurate more, and the time interval T1 that is obtained is also just accurate more.

To combine electric power system shown in Fig. 6 A below, further specify the operation principle of the control appliance of present embodiment.

Shown in Fig. 6 A, the power supply status monitoring module 41 of present embodiment realizes that by CPLD chip 411 and high frequency clock 412 the PG# signal and the Present# signal of all Switching Power Supplies 10 all are linked into CPLD chip 411; High frequency clock 412 is connected with CPLD chip 411, and the time interval T1, T2 of each Switching Power Supply 10 etc. measured in the instruction that mainly is used for sending according to CPLD chip 411.Energy supply control module 42 is realized by CPLD chip 421, and CPLD chip 411 is connected with CPLD chip 421.In addition, except Fig. 6 A illustrated embodiment, energy supply control module 42 can also shared piece of CPLD chip with power supply status monitoring module 41.

Further shown in Fig. 6 A, the Standby of all Switching Power Supplies 10 output links together, and is used for to control appliance power supply 40.The output of all Switching Power Supplies 10 links together, and is connected in the system through power connector 20, is used to provide the needed power supply of system's operate as normal; Each Switching Power Supply 10 all is connected with the electric main of 220V.

The operation principle of present embodiment electric power system, just the operation principle of control appliance is specific as follows:

After the input effectively of 220V electric main, the Standby power supply begins output, and control appliance 40 is started working.If the Standby voltage of Switching Power Supply 10 can not satisfy the demand of control appliance, can pass through power source conversion and obtain needed voltage.

The level of the Present# signal of CPLD chip 411 pilot switch power supplys 10 comes the situation that exists of Switching Power Supply 10 in the judgement system, and gives CPLD chip 421 synchronously.Simultaneously, CPLD chip 421 is changed to the PSON# signal of each Switching Power Supply 10 effectively, and gives CPLD chip 411 synchronously.

For each Switching Power Supply 10 counter is set in that CPLD chip 411 is inner, be designated as respectively first counter, second counter ..., the n counter.The initial value of each counter is 0, when the rising edge of back at each high frequency clock 412 that be unlocked arrives, counting is added 1.When CPLD chip 411 is received the effective information of PSON# signal of the Switching Power Supply 10 that CPLD chip 421 is come synchronously, open counter.Be the example explanation with first Switching Power Supply 10, second Switching Power Supply 10 and n Switching Power Supply 10 corresponding first counter, second counter and n counters below.CPLD chip 411 inside are with high frequency clock 412 clock as a reference, the PG# signal of each Switching Power Supply 10 of continuous sampling.

If at n all after date of sampling, the PG# signal is still invalid, illustrates that this Switching Power Supply 10 has fault, is labeled as trouble power; For detected trouble power, CPLD chip 411 can be given CPLD chip 421 synchronously, and it is invalid that CPLD chip 421 can be changed to these Switching Power Supply 10 corresponding PSON# signals.With first Switching Power Supply 10 faults is example, and at this moment, the signal sequence of Switching Power Supply is shown in Fig. 6 B.

If it is effective in n clock cycle, to detect the PG# signal, illustrate that Switching Power Supply output is normal; To each Switching Power Supply; CPLD chip 411 can the record inspection from the PSON# signal effectively to the count value of PG# signal effectively; And then according to the clock cycle T of high frequency clock 412, can obtain each Switching Power Supply 10 from the PSON# signal effectively to the effective needed time interval T1 of PG# signal.CPLD chip 411 is given CPLD chip 421 synchronously with each Switching Power Supply 10 time corresponding interval T 1.

The PG# signal that CPLD chip 411 continues each Switching Power Supply 10 of monitoring, the state if the PG# signal of each Switching Power Supply 10 is remained valid always illustrates that each Switching Power Supply 10 has normally started.At this moment, the signal sequence of each Switching Power Supply 10 is shown in Fig. 6 C.

Become invalidly after effective a bit of time again if CPLD chip 411 monitors the PG# signal of each Switching Power Supply 10, illustrate that overcurrent protection possibly take place Switching Power Supply 10, record effectively to the time interval of PG# invalidating signal, is designated as T2 from the PG# signal.At this moment, the signal sequence of each Switching Power Supply 10 is shown in Fig. 6 D.

When overcurrent takes place in Switching Power Supply 10; Need to attempt giving each Switching Power Supply 10 to re-power; All Switching Power Supplies 10 have all withdrawed from over-current state in order to guarantee to re-power; Before Switching Power Supply 10 is not released the overcurrent protection state; CPLD chip 421 keeps the PSON# signal of each Switching Power Supply 10 effective, so that each Switching Power Supply 10 all can get into the pattern of having the hiccups.CPLD chip 411 monitors the PG# signal once more effectively the time, illustrate that corresponding switch power supply 10 has withdrawed from from over-current state, and at this moment, it is invalid that CPLD chip 421 is changed to the PSON# signals of Switching Power Supply 10 correspondences.At this moment, the signal sequence of each Switching Power Supply 10 is shown in Fig. 6 E.

After confirming that all Switching Power Supplies 10 have all withdrawed from over-current state; CPLD chip 421 is controlled the PSON# signal of each Switching Power Supply 10 again for effective; Consider simultaneously each Switching Power Supply 10 from the PSON# signal effectively to the effective time interval of PG# signal; Be T1; The PSON# signal of controlling each Switching Power Supply 10 is changed to effective sequencing; PG# signal to guarantee each Switching Power Supply 10 is effective simultaneously, so just can guarantee that each power module has started simultaneously.At this moment, the signal sequence of each Switching Power Supply 10 is shown in Fig. 6 F.

The control appliance of present embodiment efficiently solves the problem that the overcurrent protection power supply of having the hiccups in the multi-power system powers on synchronously, realizes simply can realizing powering on synchronously of Switching Power Supply fast.

One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be accomplished through the relevant hardware of program command; Aforesaid program can be stored in the computer read/write memory medium; This program the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.

What should illustrate at last is: above embodiment is only in order to illustrating technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.

Claims

1. control the method that power supply powers on synchronously for one kind, it is characterized in that, comprising:

2. the method that control power supply according to claim 1 powers on synchronously; It is characterized in that; Said energy supply control module monitors at said power supply status monitoring module and occurs power supply output state index signal in said a plurality of Switching Power Supply by after effectively becoming the first invalid Switching Power Supply, the power supply of all Switching Power Supplies is exported control signal be changed to invalid comprising:

Said power supply status monitoring module power supply output state index signal occurs when effectively becoming the first invalid Switching Power Supply in monitoring said a plurality of Switching Power Supply; Continue the power supply output state index signal of said first Switching Power Supply of monitoring; And become when effective by invalid again in the power supply output state index signal that monitors said first Switching Power Supply; First state change information of the power supply output state index signal of said first Switching Power Supply is announced to said energy supply control module; And in the output state index signal that monitors other Switching Power Supplies by effectively becoming invalid becoming again again when effective, first state change information of the power supply output state index signal of other Switching Power Supplies is announced to said energy supply control module;

Said energy supply control module is when first state change information of the power supply output state index signal of said first Switching Power Supply that receives said power supply status monitoring module announcement; It is invalid that the power supply of said first Switching Power Supply output control signal is changed to; And when first state change information of the power supply output state index signal of other Switching Power Supplies that receive the announcement of said power supply status monitoring module, it is invalid that the power supply output control signal of other Switching Power Supplies is changed to.

3. the method that control power supply according to claim 1 powers on synchronously; It is characterized in that; Said energy supply control module monitors at said power supply status monitoring module and occurs power supply output state index signal in said a plurality of Switching Power Supply by after effectively becoming the first invalid Switching Power Supply, the power supply of all Switching Power Supplies is exported control signal be changed to invalid comprising:

Said power supply status monitoring module power supply output state index signal occurs when effectively becoming the first invalid Switching Power Supply in monitoring said a plurality of Switching Power Supply, second state change information of the power supply output state index signal of said first Switching Power Supply is announced to said energy supply control module;

Said energy supply control module is when second state change information of the power supply output state index signal of said first Switching Power Supply that receives the announcement of said power supply status monitoring module, and it is invalid that the power supply output control signal of all Switching Power Supplies is changed to.

4. the method that powers on synchronously according to claim 1 or 2 or 3 described control power supplys; It is characterized in that; Said power supply status monitoring module is monitored a plurality of parallel powerings and the power supply output state index signal of the Switching Power Supply that powered on, to comprise before the operating state of monitoring each said Switching Power Supply:

Said energy supply control module is changed to the power supply of each said Switching Power Supply output control signal effectively, and will identify the last electrical information that each said Switching Power Supply powered on and send to said power supply status monitoring module;

Said power supply status monitoring module is according to the last electrical information of each the said Switching Power Supply that receives; Monitor the power supply output state index signal of each said Switching Power Supply; With obtain each said Switching Power Supply from power supply output control signal effectively to the effective time interval of power supply output state index signal, and each the said Switching Power Supply that will obtain effectively sends to said energy supply control module to the effective time interval of power supply output state index signal from power supply output control signal.

5. the method that control power supply according to claim 4 powers on synchronously; It is characterized in that; Said energy supply control module is changed to the power supply of each said Switching Power Supply output control signal effectively, and the last electrical information of each said Switching Power Supply is sent to said power supply status monitoring module comprises before:

Each said Switching Power Supply of said power supply status monitoring module monitoring have an index signal, confirm that each said Switching Power Supply exists, and the information that exists that will identify each said Switching Power Supply existence sends to said energy supply control module.

6. the method that control power supply according to claim 4 powers on synchronously; It is characterized in that; Said power supply status monitoring module is according to the last electrical information of each the said Switching Power Supply that receives; Monitor the power supply output state index signal of each said Switching Power Supply, effectively comprise to the effective time interval of power supply output state index signal from power supply output control signal to obtain each said Switching Power Supply:

Said power supply status monitoring module is on each the said Switching Power Supply that receives during electrical information, for each said Switching Power Supply starts a counter;

Said power supply status monitoring module becomes when effective in the power supply output state index signal of each said Switching Power Supply, closes the corresponding counter of each said Switching Power Supply;

Said power supply status monitoring module obtains each said Switching Power Supply and exports control signal effectively to the effective time interval of power supply output state index signal from power supply according to the count value of the corresponding counter of each said Switching Power Supply.

7. the method that control power supply according to claim 6 powers on synchronously; It is characterized in that; Said power supply status monitoring module becomes when effective in the power supply output state index signal of each said Switching Power Supply, comprises before closing the corresponding counter of each said Switching Power Supply:

Said power supply status monitoring module judgement begins from the last electrical information that receives each said Switching Power Supply, and the power supply output state index signal that whether in preset monitoring time, monitors each said Switching Power Supply becomes effectively;

If judged result is for being, said power supply status monitoring module is carried out power supply output state index signal in each said Switching Power Supply and is become when effective, closes the operation of the corresponding counter of each said Switching Power Supply;

If judged result is for denying; Said power supply status monitoring module does not become the corresponding counter of effective Switching Power Supply with power supply output state index signal and closes in preset monitoring time; And power supply output state index signal does not become the power supply output state index signal of effective Switching Power Supply in preset monitoring time third state change information announced to said energy supply control module, it is invalid that said energy supply control module does not become effective Switching Power Supply with power supply output state index signal in preset monitoring time power supply output control signal is changed to.

8. a control appliance is characterized in that, comprising:

Energy supply control module; Be used for monitoring said a plurality of Switching Power Supply and power supply output state index signal occur by after effectively becoming the first invalid Switching Power Supply at said power supply status monitoring module; It is invalid that the power supply of all Switching Power Supplies output control signal is changed to; Export control signal effectively to the effective time interval of power supply output state index signal according to each Switching Power Supply from power supply then; Power supply output control signal with each Switching Power Supply is changed to effectively respectively, so that the power supply output state index signal of all Switching Power Supplies simultaneously effectively.

9. control appliance according to claim 8; It is characterized in that; Said power supply status monitoring module specifically is used for power supply output state index signal occurring when effectively becoming the first invalid Switching Power Supply monitoring said a plurality of Switching Power Supply; Continue the power supply output state index signal of said first Switching Power Supply of monitoring; And become when effective by invalid again in the power supply output state index signal that monitors said first Switching Power Supply; First state change information of the power supply output state index signal of said first Switching Power Supply is announced to said energy supply control module; And in the power supply output state index signal that monitors other Switching Power Supplies by effectively becoming invalid becoming again again when effective, first state change information of the power supply output state index signal of other Switching Power Supplies is announced to said energy supply control module;

Said energy supply control module specifically is used for when first state change information of the power supply output state index signal of said first Switching Power Supply that receives said power supply status monitoring module announcement; It is invalid that the power supply of said first Switching Power Supply output control signal is changed to; And when first state change information of the power supply output state index signal of other Switching Power Supplies that receive the announcement of said power supply status monitoring module, it is invalid that the power supply output control signal of other Switching Power Supplies is changed to.

10. control appliance according to claim 8; It is characterized in that; Said power supply status monitoring module specifically is used for power supply output state index signal occurring when effectively becoming the first invalid Switching Power Supply monitoring said a plurality of Switching Power Supply, and second state change information of the power supply output state index signal of said first Switching Power Supply is announced to said energy supply control module;

Said energy supply control module specifically is used for when second state change information of the power supply output state index signal of said first Switching Power Supply that receives the announcement of said power supply status monitoring module, and it is invalid directly the power supply output control signal of all Switching Power Supplies to be changed to.

11. according to Claim 8 or 9 or 10 described control appliances; It is characterized in that; Said energy supply control module also is used for the power supply of each said Switching Power Supply output control signal is changed to effectively, and will identify the last electrical information that each said Switching Power Supply powered on and send to said power supply status monitoring module;

Said power supply status monitoring module also is used for the last electrical information according to each the said Switching Power Supply that receives; Monitor the power supply output state index signal of each said Switching Power Supply; With obtain each said Switching Power Supply from power supply output control signal effectively to the effective time interval of power supply output state index signal, and each the said Switching Power Supply that will obtain effectively sends to said energy supply control module to the effective time interval of power supply output state index signal from power supply output control signal.

12. control appliance according to claim 11; It is characterized in that; Said power supply status monitoring module also is used to monitor the index signal that exists of each said Switching Power Supply; Confirm that each said Switching Power Supply exists, and the information that exists that will identify each said Switching Power Supply existence sends to said energy supply control module.

13. control appliance according to claim 11; It is characterized in that; When said power supply status monitoring module specifically is used on each the said Switching Power Supply that receives electrical information; For each said Switching Power Supply starts a counter; And become when effective in the power supply output state index signal of each said Switching Power Supply; Close the corresponding counter of each said Switching Power Supply; According to the count value of the corresponding counter of each said Switching Power Supply, obtain each said Switching Power Supply and export control signal effectively to the effective time interval of power supply output state index signal then from power supply.

14. control appliance according to claim 13; It is characterized in that; Said power supply status monitoring module is used to also judge that the last electrical information from receiving each said Switching Power Supply begins; The power supply output state index signal that whether in preset monitoring time, monitors each said Switching Power Supply becomes effectively; When judged result when being; Execution becomes when effective in the power supply output state index signal of each said Switching Power Supply, closes the operation of the corresponding counter of each said Switching Power Supply; When judged result for not the time; Power supply output state index signal is not become the corresponding counter of effective Switching Power Supply close in preset monitoring time, and power supply output state index signal does not become the power supply output state index signal of effective Switching Power Supply in preset monitoring time third state change information is announced to said energy supply control module;

It is invalid that said energy supply control module also is used for power supply output state index signal does not become effective Switching Power Supply in preset monitoring time power supply output control signal is changed to.

15. according to Claim 8 or 9 or 10 or 12 or 13 or 14 described control appliances, it is characterized in that said power supply status monitoring module is realized by on-site programmable gate array FPGA or complex programmable logic device (CPLD); And/or

Said energy supply control module is realized by FPGA or CPLD.

16. according to Claim 8 or 9 or 10 described control appliances, it is characterized in that, also comprise:

Power module is used for to said power supply status monitoring module and said energy supply control module power supply being provided.

17. control appliance according to claim 16 is characterized in that, said power module is the standby power of said Switching Power Supply.