CN100558136C - A kind of matching used communication single-board, system and power-supply switching method thereof - Google Patents
A kind of matching used communication single-board, system and power-supply switching method thereof Download PDFInfo
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- CN100558136C CN100558136C CNB200610080567XA CN200610080567A CN100558136C CN 100558136 C CN100558136 C CN 100558136C CN B200610080567X A CNB200610080567X A CN B200610080567XA CN 200610080567 A CN200610080567 A CN 200610080567A CN 100558136 C CN100558136 C CN 100558136C
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Abstract
The invention discloses a kind of do not have self-powered communication single-board, a kind of matching used communication single-board system and power-supply switching method thereof.Core of the present invention is that power sense circuit, control circuit and commutation circuit are set in not having self-powered communication single-board.Power sense circuit is used for the power supply signal of veneer is detected, and the out-put supply detection signal is to control circuit; The professional switching signal that control circuit is used for receiving to the power detection signal that receives from power sense circuit with from the outside compares, and according to comparative result output control signal, the control commutation circuit is carried out power supply and switched.Utilize veneer disclosed by the invention, system and power-supply switching method can make professional switching and power supply switch overlapping in time, power supply is switched the instantaneous influence that business is produced merge in the service switch process, avoided the secondary effect of the asynchronism that power supply switches and business is switched single board service.
Description
Technical field
The present invention relates to the communications field, particularly a kind of matching used communication single-board, system and power-supply switching method thereof.
Background technology
In the design of communication products, the matching used situation of communication single-board is very general, for example has matching used two veneers in the product.In some cases, because wherein the device integrated level of a veneer is than higher, cause and in limited veneer zone, power supply to be set, therefore can only the veneer power supply of this high integration by the veneer in another charged source of piece by the connector on the motherboard, simultaneously, in order to guarantee the uninterrupted power supply of communication system, further improve the reliability of power supply, also need to introduce another road backup battery and be this veneer power supply.
Referring to Fig. 1, Fig. 1 is the structured flowchart of two matching used single board systems of veneer.As shown in Figure 1, this single board system comprises: self-powered veneer A 101, do not have self-powered board B 102, motherboard 103, veneer A 101 is connected by motherboard 103 with board B 102, veneer A 101 and board B 102 cooperate the realization single board service, and veneer A 101 is load 105 power supplies of itself, also be load 107 power supplies of board B 102 by the connector on the motherboard 103, simultaneously in order to guarantee the uninterrupted power supply of system, system also provides one road backup battery 106 for board B 102, and this backup battery is board B 102 power supplies by motherboard 103.Under the normal condition, this two-way power supply provides the power supply power supply for board B 102 simultaneously.
In order to improve the reliability that veneer A 101 is worked in system, system also provides a backup veneer for veneer A 101, this backup veneer also links to each other with motherboard 103, motherboard 103 links to each other with the system master unit of the communication equipment at described matching used single board system place, the working condition of each veneer is responsible for monitoring in the system master unit, when the system master unit detects veneer A 101 and breaks down cisco unity malfunction, can send professional switching signal to the backup veneer of veneer A 101 by motherboard 103, cooperate the business of realization with board B 102 by the backup veneer, but this backup veneer does not provide power supply for board B 102.Therefore when veneer A 101 breaks down, have only backup battery 106 to give board B 102 power supplies separately.
When changing veneer A 101, during again with veneer A 101 insertion systems, because the power supply of veneer A 101 and voltage that backup battery 106 provides can not be identical, so may cause that closing the road power supply instantaneous differential pressure occurs and change, and causes business is produced instantaneous influence.And power supply switch finish after, single board system will carry out business and switch, single board service is switched receipt plate A101 from the backup veneer, the system master unit detects veneer A 101 can operate as normal the time, send professional switching signal by motherboard 103 to the backup veneer, again cooperate the business of realization by veneer A 101 and board B 102, this service switch process also can produce instantaneous influence to business.
In whole process, power supply switches and professional the switching is unaided separately, that is to say, in the process that communication single-board is changed, not only professional realization of switching single board service can produce instantaneous influence; And in the handoff procedure of power supply, instantaneous pressure reduction changes also can produce instantaneous influence to business, the asynchronism of these two kinds of influences makes single board service be subjected to secondary effect when single-board replacement, how to avoid power supply to switch single board service is caused secondary effect with professional the switching, to the influence of single board service, be the technical problem that improves the reliability urgent need solution of communication products when reducing the replacing veneer as far as possible.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of self-powered communication single-board that do not have, and during the supporting use of this veneer and self-powered veneer, can reduce when changing self-powered veneer the influence to single board service to greatest extent.
Main purpose of the present invention is to provide a kind of matching used communication single-board system, when this system can reduce veneer self-powered in the replacing system to greatest extent to the influence of single board service.
Another main purpose of the present invention is to provide the power-supply switching method of a kind of matching used communication single-board system, when reducing veneer self-powered in the replacing system to greatest extent to the influence of single board service.
First aspect in order to achieve the above object, the invention provides a kind of self-powered communication single-board that do not have, this communication single-board comprises load at least, power supply by first veneer matching used with it is its power supply, this communication single-board further comprises power sense circuit, control circuit and commutation circuit
Whether the power supply that power sense circuit is used to detect described communication single-board operate as normal, and according to the power supply testing result to control circuit out-put supply detection signal;
Control circuit is used for relatively the professional switching signal that business that backup veneer that the power detection signal that receives from power sense circuit and the expression that receives from the outside switch to first veneer with the business of first veneer maybe will back up veneer is switched back first veneer, and outputs a control signal to commutation circuit according to comparative result;
Wherein, the power supply cisco unity malfunction of representing described communication single-board when power detection signal, and when professional switching signal represents that the business of first veneer switches to the backup veneer of first veneer, control circuit export first one-board power supply for the control signal of described communication single-board power supply to commutation circuit; Otherwise, the power supply operate as normal of representing described communication single-board when power detection signal, and when the business that professional switching signal represents to back up veneer was switched back first veneer, it was that the control signal of described communication single-board power supply is to commutation circuit that control circuit is exported first one-board power supply;
Described commutation circuit one end is connected with the power supply of described first veneer, and the other end is connected with described load, and whether its control signal according to control circuit output is controlled first one-board power supply is described communication single-board power supply.
Described control circuit is the professional switching signal from the system master unit reception of described communication single-board place communication equipment;
Described system master unit is according to the testing result outgoing traffic switching signal that detects the described first veneer working condition.
Preferably, described control circuit links to each other with described system master unit by motherboard.
Described load further links to each other with the stand-by power supply that one tunnel outside provides, and this stand-by power supply provides the stand-by power supply power supply for described veneer.
Preferably, described stand-by power supply links to each other with described load by motherboard; The power supply of described first veneer is described communication single-board power supply by motherboard.
Preferably, described power sense circuit comprises sample circuit and power supply detection chip, and described sample circuit is used for the power source voltage of described first veneer is sampled, and sampled result is sent to the power supply detection chip;
Whether the power supply that the power supply detection chip is used to detect first veneer operate as normal, and according to power supply testing result out-put supply detection signal to control circuit.
Preferably, described sample circuit is made up of the resistance of two polyphones, and the link of two resistance links to each other with the power supply detection chip, and residue one end of one of them resistance links to each other with the power supply of described first veneer, the residue one end ground connection of another resistance.
Preferably, described power supply detection chip is MC33161 detection chip or comparator with a reference source.
Preferably, described control circuit is SN74HC00DR chip, comparator or field programmable gate array (FPGA), or is made up of Darlington transistor or logical AND not gate.
Preferably, described commutation circuit is relay or MOSFET pipe.
Second aspect in order to achieve the above object, the invention provides a kind of matching used communication single-board system, this system comprises the first self-powered veneer, does not have the second self-powered veneer, described second veneer comprises load at least, power supply by described first veneer is its power supply, described second veneer further comprises: power sense circuit, control circuit and commutation circuit
Described power sense circuit one end is connected to the power supply of first veneer, and the other end links to each other with control circuit, and whether its power supply that detects first veneer operate as normal, and according to the power supply testing result to control circuit out-put supply detection signal;
Input of described control circuit receives the power detection signal that power sense circuit sends, another input receives the professional switching signal that business that backup veneer that expression switches to first veneer with the business of first veneer maybe will back up veneer is switched back first veneer from the outside, output links to each other with commutation circuit; It compares power detection signal and professional switching signal, and outputs a control signal to commutation circuit according to comparative result;
Wherein, the power supply cisco unity malfunction of representing first veneer when power detection signal, and when professional switching signal represented that the business of first veneer switches to the backup veneer of first veneer, it was not that the control signal of second veneer power supply is to commutation circuit that control circuit is exported first one-board power supply; Otherwise when power detection signal is represented the power supply operate as normal of first veneer, and the professional switching signal business of representing to back up veneer is when switching back first veneer, and it is that the control signal of second veneer power supply is to commutation circuit that control circuit is exported first one-board power supply;
Described commutation circuit one end links to each other with the power supply of first veneer, and the other end links to each other with the load of second veneer, and whether the power supply that its control signal according to control circuit output is controlled first veneer is the power supply of second veneer.
This system further comprises the backup veneer of first veneer, be used for when the first veneer cisco unity malfunction, replace first veneer to cooperate with second veneer realizing professional, the backup veneer of described first veneer links to each other with the system master unit of described communication single-board system place communication equipment;
Described system master unit is used to detect the working condition of first veneer, and according to the control circuit outgoing traffic switching signal of testing result to the backup veneer and second veneer of first veneer;
Described control circuit is the professional switching signal that receives from described system master unit.
Preferably, described backup veneer links to each other with described system master unit by motherboard; Described control circuit links to each other with described system master unit by motherboard.
Described system further comprises one road backup battery, and this backup battery links to each other with the load of described second veneer, for described second veneer provides the stand-by power supply power supply.
Preferably, described backup battery links to each other with described load by motherboard; The power supply of described first veneer links to each other by the power sense circuit of motherboard with second veneer.
Preferably, described power sense circuit comprises sample circuit and power supply detection chip, and described sample circuit one end links to each other with the power supply of first veneer, and an end links to each other with the power supply detection chip; Described power supply detection chip links to each other with control circuit, and sample circuit is used for the power source voltage of described first veneer is sampled, and sampled result is sent to the power supply detection chip; Whether the power supply that the power supply detection chip is used to detect first veneer operate as normal, and according to power supply testing result out-put supply detection signal to control circuit.
Preferably, described sample circuit is made up of the resistance of two polyphones, and the link of two resistance links to each other with the power supply detection chip, and residue one end of one of them resistance links to each other with the power supply of described first veneer, the residue one end ground connection of another resistance.
The third aspect in order to achieve the above object, the invention provides a kind of power-supply switching method of matching used communication single-board, self-powered veneer in this matching used communication single-board system does not provide power supply for there being self-powered veneer, this method at first is provided with power sense circuit, control circuit and commutation circuit in not having self-powered veneer, may further comprise the steps:
A, power sense circuit detect whether operate as normal of veneer power supply, and the out-put supply detection signal is to control circuit;
B, control circuit comparison power detection signal and the expression that receives from the outside will self-powered veneer business switch to it and back up the professional switching signal that business that veneer maybe will back up veneer is switched back self-powered veneer, and export control signal to commutation circuit according to comparative result;
Wherein, the power supply cisco unity malfunction of representing veneer when power detection signal, and when professional switching signal represented that the business of self-powered veneer switches to its backup veneer, the power supply of the veneer that control circuit output is self-powered was not for there being the control signal of self-powered veneer power supply; Otherwise, the power supply operate as normal of representing veneer when power detection signal, and when the business that professional switching signal represents to back up veneer was switched back self-powered veneer, the power supply of the veneer that control circuit output is self-powered was the control signal that does not have self-powered veneer power supply;
Whether C, commutation circuit are not have self-powered veneer power supply according to the power supply of the self-powered veneer of the control signal control of control circuit output.
The described professional switching signal of step B is by the system master unit output of the communication equipment at described matching used communication single-board system place, described system master unit detects the working condition of self-powered veneer, and according to backup veneer and the described control circuit while outgoing traffic switching signal of testing result to self-powered veneer.
Preferably, professional switching signal and the power detection signal described in the step B represented with level signal.
Preferably, the described power sense circuit of steps A detects the veneer power supply, and the out-put supply detection signal may further comprise the steps to control circuit:
Power sense circuit sets in advance a voltage threshold, and the voltage of veneer power supply is sampled, and relatively sampled voltage and threshold voltage if sampled voltage is lower than voltage threshold, judge that the veneer power supply can not normal power supply; Otherwise judge that the veneer power supply can normal power supply, and according to result of determination to control circuit out-put supply detection signal.
Preferably, describedly comprise the steps: to control circuit out-put supply detection signal according to result of determination
If sampled voltage is lower than voltage threshold, then power sense circuit is to control circuit output low level power detection signal; Otherwise power sense circuit is to control circuit output high level power detection signal.
As seen from the above technical solutions, provided by the invention do not have self-powered communication single-board, matching used communication single-board system and a power-supply switching method thereof, by power sense circuit, control circuit and commutation circuit are set in not having self-powered communication single-board, power sense circuit detects the power supply signal of self-powered veneer, and the out-put supply detection signal is to control circuit; The system master unit detects the self-powered veneer that breaks down and changes again, in the time of can operate as normal, by the backup veneer outgoing traffic switching signal of motherboard to self-powered veneer, carrying out business switches, business is switched back self-powered veneer by the backup veneer, the simultaneity factor main control unit also should the business switching signal output to control circuit by motherboard, the professional switching signal that control circuit is exported by motherboard the power detection signal and the system master unit of power sense circuit output compares, and outputs a control signal to commutation circuit according to comparative result; Whether commutation circuit is not have self-powered veneer power supply according to the power supply of the self-powered veneer of the control signal control of control circuit output.
Because being longer than power supply, switches the professional needed time of switching, therefore can be implemented in by this matching used communication single-board system provided by the invention and power-supply switching method thereof and carry out the power supply switching in the professional process of switching, power supply is switched and professional time-interleaving of switching, power supply is switched the instantaneous influence that business is produced to merge in the service switch process, avoided the secondary effect of the asynchronism that power supply switches and business is switched to single board service, realized seamless switching, compressed to greatest extent when in the replacing system self-powered veneer being arranged influences single board service with causing, has improved the reliability that this veneer is worked in system.
Description of drawings
Fig. 1 is the structured flowchart of two matching used single board systems of veneer in the prior art.
Fig. 2 is the structural representation of matching used communication single-board of the present invention system;
Fig. 3 is the structural representation of a preferred embodiment of system shown in Figure 2;
Fig. 4 utilizes the SN74HC00DR chip to realize the structural representation of a preferred embodiment of the system shown in Figure 2 of control circuit;
Fig. 5 is the flow chart of a preferred embodiment of the power-supply switching method of matching used communication single-board of the present invention system.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with drawings and the specific embodiments.
It is of the present invention that not have self-powered communication single-board, matching used communication single-board system and power-supply switching method thereof mainly be by power sense circuit, control circuit and commutation circuit are set in not having self-powered communication single-board, power sense circuit detects the power supply of veneer, and the out-put supply detection signal is to control circuit; Control circuit compares the power detection signal of power sense circuit output and the professional switching signal that receives from the outside, and exports control signal according to comparative result to commutation circuit; Commutation circuit is carried out power supply according to the control signal of control circuit output and is switched.Utilize above-mentioned communication single-board, system and method, can avoid power supply to switch and the secondary effect of the professional asynchronism of switching single board service.
Referring to Fig. 2, Fig. 2 is the structural representation of matching used communication single-board of the present invention system.In this system, self-powered veneer A 201 is matching used with no self-powered board B 202, veneer A 201 is connected with board B 202 by motherboard 203, the DC/DC power supply 207 that veneer A carries not only is 208 power supplies of the load in the veneer A, but also be load 210 power supply in the board B by the connector on the motherboard 203, simultaneity factor also provides No. one stand-by power supply 209 to link to each other with the load 210 of board B by motherboard 203, for board B is carried out the backup battery power supply.In order to improve the reliability that veneer A 201 is worked in system, system also provides a backup veneer for veneer A 201, this backup veneer also links to each other with motherboard 203, is used for when veneer A 201 cisco unity malfunctions, replaces veneer A 201 to cooperate the business of realization with board B 202.
Under normal circumstances, veneer A 201 and board B 202 cooperate the business of realization, and the power supply DC/DC207 of veneer A 201 and backup battery 209 are the board B power supply simultaneously.The difference of this system and system shown in Figure 1 is, has increased power sense circuit 204, control circuit 205 and commutation circuit 206 in board B 202.
The time that the business switching of veneer needs will be longer than the power supply handoff procedure, and it is temporal overlapping therefore can to realize that by this system single board service switching and power supply switch in, and the power supply switching is merged in the service switch process the instantaneous influence that business produces.
Referring to Fig. 3, Fig. 3 is the structural representation of a preferred embodiment of system shown in Figure 2.As shown in Figure 3, power sense circuit 304 is made up of sample circuit 308 and power supply detection chip 309, and wherein, sample circuit 308 is made up of resistance R 1 and resistance R 2; Power supply detection chip 309 is the MC33161 detection chip, resistance R 1 and resistance R 2 in the sample circuit 308 are connected in series, wherein an end of resistance R 1 is connected with power supply DC/DC307 in the veneer A 301 by motherboard C303, resistance R 1 is connected the other end ground connection of resistance R 2 with the link of resistance R 2 with the input of power supply detection chip 309.
In the present embodiment, set when veneer A 301 cisco unity malfunctions, power supply 307 as veneer A 301 breaks down, when service needed was switched, the system master unit also outputed to control circuit 305 with this signal by motherboard 303 when the backup veneer of veneer A 301 sends high level business switching signal; If veneer A is insertion system again, in the time of can operate as normal, the system master unit sends the professional switching signal of low level by motherboard 303 to the backup veneer of veneer A, simultaneously this signal is outputed to the control circuit 305 in the board B 302.
When the power supply of veneer A breaks down, during cisco unity malfunction, when the system master unit arrives the backup veneer of veneer A by the professional switching signal of the high level of motherboard 303 outputs, business begins to switch, switch to the backup veneer of veneer A from veneer A, cooperate the business of realization by backup veneer and board B 302, the professional switching signal of this high level arrives the control circuit 305 in the board B 302 simultaneously, two input pins 1 through Darlington transistor 310,2 with also oppositely back from output pin 3 output low level signals, this low level signal and low level power detection signal respectively through the input pin 4 of Darlington transistor 311 with 5 with and oppositely the back export two input pins 7 of high level signals from pin 6 to Darlington pipe 312,8, through Darlington transistor 312 with and the reverse afterwards commutation circuit 306 of output low level control signal in the board B 302.
When veneer A can operate as normal, when the system master unit arrives the backup veneer of veneer A by the professional switching signal of the low level of motherboard 303 outputs, business begins to switch, switch receipt plate A by the backup veneer, this low level signal arrives the control circuit 305 in the board B 302 simultaneously, two input pins 1 through Darlington transistor 310,2 with also oppositely back from output pin 3 output high level signals, the input pin 4 that this high level signal and high level power detection signal are passed through Darlington transistor 311 respectively with 5 with and reverse two input pins 7 of back from pin 6 output low level signals to Darlington pipe 312,8, through Darlington transistor 312 with and oppositely the back export high-level control signal to commutation circuit 306.
In sum, the system of present embodiment can be implemented in and carries out power supply in the professional process of switching and switch, and makes the two overlapping in time, thereby has avoided in the veneer A replacing process secondary effect to single board service.
The control circuit of being made up of three Darlington transistors 305 in the present embodiment also can realize that the SN74HC00DR chip is made up of 4 road Darlington transistors with existing SN74HC00DR chip, and the present invention only need use three road Darlington transistors wherein.As shown in Figure 4, Fig. 4 utilizes the SN74HC00DR chip to realize the structural representation of a preferred embodiment of the system shown in Figure 2 of control circuit, wherein the pin one of SN74HC00DR chip 410,2 is the input signal pin of first via Darlington transistor, and pin 3 is the output signal pin; Pin 4,5 is the second road input signal pin, and pin 6 is the output signal pin; Pin 9,10 is a Third Road input signal pin, and pin 8 is the output signal pin; Pin 7 is for connecing the pin of GND; Pin one 4 is a power pin.Wherein, pin 6 connects together with pin 9,10 these three pins.Above-mentioned pin one, 2,3,4,5,6,9,10,8 corresponds respectively to pin one embodiment illustrated in fig. 3,2,3,4,5,6,7,8,9.
The pin of SN74HC00DR chip 410 connects can a variety of modes, and every connected mode that can reach the object of the invention can adopt.The power pin 14 of this SN74HC00DR chip 410 connects the VCC1 power supplys, and the VCC1 power supply is the power supply after the DC/DC power supply of veneer A and backup battery close the road, can guarantee that being interrupted can not appear in 410 power supplies of SN74HC00DR chip, and chip is operate as normal always.
In addition, the power supply detection chip 309 in embodiment illustrated in fig. 3 can replace with the comparator with a reference source.
Referring to Fig. 5, Fig. 5 is the flow chart of a preferred embodiment of the power-supply switching method of matching used communication single-board of the present invention system.This method at first single board system do not have power sense circuit, control circuit and commutation circuit are set in the self-powered veneer, be example with system shown in Figure 3, this flow process may further comprise the steps:
Step 501, the sample circuit in the power sense circuit is sampled to power supply.Power sense circuit 304 sets in advance a threshold voltage, and the voltage of 308 pairs of DC/DC power supplys 307 of sample circuit is sampled then, and sampled result is delivered to the pin 3 of detection chip 309.
Step 502, power supply detection chip 309 is sampled voltage and threshold voltage relatively, is lower than threshold value if detect the sampled voltage that obtains, and proves that the power supply of veneer A 301 breaks down, then execution in step 503-506; The voltage that detection obtains is not less than threshold value, then execution in step 507-510.
Step 503, power supply detection chip 309 is passed through pin 5 to control circuit 305 output low level power detection signal.
Still set in the present embodiment when veneer A can operate as normal, the system master unit by motherboard simultaneously to the backup veneer and the control circuit output low level business switching signal of veneer A; When the veneer A cisco unity malfunction, break down such as the power supply of veneer A, the system master unit by motherboard simultaneously to the backup veneer and the professional switching signal of control circuit output high level of veneer A.
Step 504, high level business switching signal is exported to the backup veneer and the control circuit of veneer A simultaneously by motherboard in the system master unit, and business is switched beginning, by the backup veneer and the board B cooperation realization business of veneer A.
Step 505, control circuit 305 is confirmed all to arrive from the professional switching signal of the low level power detection signal of power sense circuit output and the output of system master unit, then this two paths of signals is compared, and export control signals to commutation circuit 306 according to comparative result.The system master unit is exported the professional switching signal of high level by motherboard to control circuit, the professional switching signal of this high level is through two input pins 1 of Darlington transistor 310,2 with also oppositely back from output pin 3 output low level signals, this low level signal and low level power detection signal respectively through the input pin 4 of Darlington transistor 311 with 5 with and oppositely the back export high level signals from pin 6, this high level signal is through 312 two input pins 7 of Darlington transistor, 8 with and oppositely become low level power supply switching signal, output to commutation circuit 306 from output pin 9.
Step 506, commutation circuit 306 disconnects according to the metal-oxide-semiconductor Q1 in the low level control signal control commutation circuit of control circuit 305 output, and the power supply 307 that promptly disconnects veneer A is connected with the load 315 of board B.
Step 507, power supply detection chip 309 is exported the high level power detection signal by pin 5 to control circuit 305.
Step 508, simultaneously to the backup veneer and the professional switching signal of control circuit output low level of veneer A, business is switched beginning, cooperates the business of realization by veneer A and board B by motherboard in the system master unit.
Step 509, control circuit 305 is confirmed all to arrive from the professional switching signal of low level of the high level power detection signal of power sense circuit output and the output of system master unit, then this two paths of signals is compared, and export control signal to commutation circuit according to comparative result.
The professional switching signal of low level this moment through two input pins 1,2 of Darlington transistor 310 with and oppositely the back export high level signals from output pin 3, the power detection signal of this high level signal and high level from two input pins, 4,5 inputs of Darlington transistor 311 with and oppositely after become low level signal and export from pin 6, this low level signal outputs to commutation circuit 306 through two input pins 7,8 of Darlington transistor 312 and the power supply switching signal that also oppositely becomes high level from output pin 9.
Step 510, commutation circuit 306 is according to the high-level control signal control metal-oxide-semiconductor Q1 conducting again wherein of control circuit 305 outputs, thereby make the DC/DC power supply 307 in the veneer A 301 give board B 302 power supplies simultaneously with backup battery, realized carrying out when power supply switches with professional the switching, power supply has been switched the instantaneous influence that single board service is produced merge in the service switch process.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (22)
1, a kind of do not have a self-powered communication single-board, and this communication single-board comprises load at least, is its power supply by the power supply of first veneer matching used with it, it is characterized in that this communication single-board further comprises power sense circuit, control circuit and commutation circuit,
Whether the power supply that power sense circuit is used to detect described communication single-board operate as normal, and according to the power supply testing result to control circuit out-put supply detection signal;
Control circuit is used for relatively the professional switching signal that business that backup veneer that the power detection signal that receives from power sense circuit and the expression that receives from the outside switch to first veneer with the business of first veneer maybe will back up veneer is switched back first veneer, and outputs a control signal to commutation circuit according to comparative result;
Wherein, the power supply cisco unity malfunction of representing described communication single-board when power detection signal, and when professional switching signal represents that the business of first veneer switches to the backup veneer of first veneer, control circuit export first one-board power supply for the control signal of described communication single-board power supply to commutation circuit; Otherwise, the power supply operate as normal of representing described communication single-board when power detection signal, and when the business that professional switching signal represents to back up veneer was switched back first veneer, it was that the control signal of described communication single-board power supply is to commutation circuit that control circuit is exported first one-board power supply;
Described commutation circuit one end is connected with the power supply of described first veneer, and the other end is connected with described load, and whether its control signal according to control circuit output is controlled first one-board power supply is described communication single-board power supply.
2, communication single-board as claimed in claim 1 is characterized in that: described control circuit is the professional switching signal from the system master unit reception of described communication single-board place communication equipment;
Described system master unit is according to the testing result outgoing traffic switching signal that detects the described first veneer working condition.
3, communication single-board as claimed in claim 2 is characterized in that, described control circuit links to each other with described system master unit by motherboard.
4, communication single-board as claimed in claim 1 is characterized in that, described load further links to each other with the stand-by power supply that one tunnel outside provides, and this stand-by power supply provides the stand-by power supply power supply for described communication single-board.
5, communication single-board as claimed in claim 4 is characterized in that, described stand-by power supply links to each other with described load by motherboard; The power supply of described first veneer is described communication single-board power supply by motherboard.
6, communication single-board as claimed in claim 1, it is characterized in that, described power sense circuit comprises sample circuit and power supply detection chip, and described sample circuit is used for the power source voltage of described first veneer is sampled, and sampled result is sent to the power supply detection chip;
Whether the power supply that the power supply detection chip is used to detect first veneer operate as normal, and according to power supply testing result out-put supply detection signal to control circuit.
7, communication single-board as claimed in claim 6, it is characterized in that, described sample circuit is made up of the resistance of two polyphones, the link of two resistance links to each other with the power supply detection chip, residue one end of one of them resistance links to each other with the power supply of described first veneer, the residue one end ground connection of another resistance.
As claim 6 or 7 described communication single-boards, it is characterized in that 8, described power supply detection chip is MC33161 detection chip or comparator with a reference source.
9, communication single-board as claimed in claim 1 is characterized in that, described control circuit is SN74HC00DR chip, comparator or on-site programmable gate array FPGA, or is made up of Darlington transistor or logical AND not gate.
10, communication single-board as claimed in claim 1 is characterized in that, described commutation circuit is relay or MOSFET pipe.
11, a kind of matching used communication single-board system, this system comprises the first self-powered veneer, does not have the second self-powered veneer, described second veneer comprises load at least, power supply by described first veneer is its power supply, it is characterized in that, described second veneer further comprises: power sense circuit, control circuit and commutation circuit
Described power sense circuit one end is connected to the power supply of first veneer, and the other end links to each other with control circuit, and whether its power supply that detects first veneer operate as normal, and according to the power supply testing result to control circuit out-put supply detection signal;
Input of described control circuit receives the power detection signal that power sense circuit sends, another input receives the professional switching signal that business that backup veneer that expression switches to first veneer with the business of first veneer maybe will back up veneer is switched back first veneer from the outside, output links to each other with commutation circuit; It compares power detection signal and professional switching signal, and outputs a control signal to commutation circuit according to comparative result;
Wherein, the power supply cisco unity malfunction of representing first veneer when power detection signal, and when professional switching signal represented that the business of first veneer switches to the backup veneer of first veneer, it was not that the control signal of second veneer power supply is to commutation circuit that control circuit is exported first one-board power supply; Otherwise when power detection signal is represented the power supply operate as normal of first veneer, and the professional switching signal business of representing to back up veneer is when switching back first veneer, and it is that the control signal of second veneer power supply is to commutation circuit that control circuit is exported first one-board power supply;
Described commutation circuit one end links to each other with the power supply of first veneer, and the other end links to each other with the load of second veneer, and whether the power supply that its control signal according to control circuit output is controlled first veneer is the power supply of second veneer.
12, system as claimed in claim 11, it is characterized in that, this system further comprises the backup veneer of first veneer, be used for when the first veneer cisco unity malfunction, replace first veneer to cooperate with second veneer realizing professional, the backup veneer of described first veneer links to each other with the system master unit of described communication single-board system place communication equipment;
Described system master unit is used to detect the working condition of first veneer, and according to the control circuit outgoing traffic switching signal of testing result to the backup veneer and second veneer of first veneer;
Described control circuit is the professional switching signal that receives from described system master unit.
13, system as claimed in claim 12 is characterized in that, described backup veneer links to each other with described system master unit by motherboard; Described control circuit links to each other with described system master unit by motherboard.
14, system as claimed in claim 11 is characterized in that, described system further comprises one road backup battery, and this backup battery links to each other with the load of described second veneer, for described second veneer provides the stand-by power supply power supply.
15, system as claimed in claim 14 is characterized in that, described backup battery links to each other with described load by motherboard; The power supply of described first veneer links to each other by the power sense circuit of motherboard with second veneer.
16, system as claimed in claim 11 is characterized in that, described power sense circuit comprises sample circuit and power supply detection chip, and described sample circuit one end links to each other with the power supply of first veneer, and an end links to each other with the power supply detection chip; Described power supply detection chip links to each other with control circuit, and sample circuit is used for the power source voltage of described first veneer is sampled, and sampled result is sent to the power supply detection chip; Whether the power supply that the power supply detection chip is used to detect first veneer operate as normal, and according to power supply testing result out-put supply detection signal to control circuit.
17, system as claimed in claim 16, it is characterized in that described sample circuit is made up of the resistance of two polyphones, the link of two resistance links to each other with the power supply detection chip, residue one end of one of them resistance links to each other with the power supply of described first veneer, the residue one end ground connection of another resistance.
18, the power-supply switching method of a kind of matching used communication single-board system, self-powered veneer in this matching used communication single-board system does not provide power supply for there being self-powered veneer, it is characterized in that, this method at first is provided with power sense circuit, control circuit and commutation circuit in not having self-powered veneer, may further comprise the steps:
A, power sense circuit detect whether operate as normal of veneer power supply, and the out-put supply detection signal is to control circuit;
B, control circuit comparison power detection signal and the expression that receives from the outside will self-powered veneer business switch to it and back up the professional switching signal that business that veneer maybe will back up veneer is switched back self-powered veneer, and export control signal to commutation circuit according to comparative result;
Wherein, the power supply cisco unity malfunction of representing veneer when power detection signal, and when professional switching signal represented that the business of self-powered veneer switches to its backup veneer, the power supply of the veneer that control circuit output is self-powered was not for there being the control signal of self-powered veneer power supply; Otherwise, the power supply operate as normal of representing veneer when power detection signal, and when the business that professional switching signal represents to back up veneer was switched back self-powered veneer, the power supply of the veneer that control circuit output is self-powered was the control signal that does not have self-powered veneer power supply;
Whether C, commutation circuit are not have self-powered veneer power supply according to the power supply of the self-powered veneer of the control signal control of control circuit output.
19, method as claimed in claim 18, it is characterized in that, the described professional switching signal of step B is by the system master unit output of the communication equipment at described matching used communication single-board system place, described system master unit detects the working condition of self-powered veneer, and according to backup veneer and the described control circuit while outgoing traffic switching signal of testing result to self-powered veneer.
20, method as claimed in claim 18 is characterized in that, described professional switching signal of step B and power detection signal are level signal.
21, method as claimed in claim 18 is characterized in that, the described power sense circuit of steps A detects the veneer power supply, and the out-put supply detection signal may further comprise the steps to control circuit:
Power sense circuit sets in advance a voltage threshold, and the voltage of veneer power supply is sampled, and relatively sampled voltage and threshold voltage if sampled voltage is lower than voltage threshold, judge that the veneer power supply can not normal power supply; Otherwise judge that the veneer power supply can normal power supply, and according to result of determination to control circuit out-put supply detection signal.
22, method as claimed in claim 21 is characterized in that, describedly comprises the steps: to control circuit out-put supply detection signal according to result of determination
If sampled voltage is lower than voltage threshold, then power sense circuit is to control circuit output low level power detection signal; Otherwise power sense circuit is to control circuit output high level power detection signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610080567XA CN100558136C (en) | 2006-05-17 | 2006-05-17 | A kind of matching used communication single-board, system and power-supply switching method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB200610080567XA CN100558136C (en) | 2006-05-17 | 2006-05-17 | A kind of matching used communication single-board, system and power-supply switching method thereof |
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| CN1984208A CN1984208A (en) | 2007-06-20 |
| CN100558136C true CN100558136C (en) | 2009-11-04 |
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| CN101799775B (en) * | 2010-03-24 | 2012-06-27 | 福建星网锐捷网络有限公司 | Monitoring method for monitoring circuit and business board |
| CN101938378B (en) * | 2010-09-13 | 2015-01-28 | 中兴通讯股份有限公司 | Veneer charging and discharging management system and application method thereof |
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