CN2886891Y - Power supply protection circuit for communication service single board - Google Patents
Power supply protection circuit for communication service single board Download PDFInfo
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- CN2886891Y CN2886891Y CN 200520146917 CN200520146917U CN2886891Y CN 2886891 Y CN2886891 Y CN 2886891Y CN 200520146917 CN200520146917 CN 200520146917 CN 200520146917 U CN200520146917 U CN 200520146917U CN 2886891 Y CN2886891 Y CN 2886891Y
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- alarm signal
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Abstract
The utility model discloses a power protection circuit for veneer in communications service, which can protect power source when power veneer overflowing in the power system of assembling power panel, comprising a voltage conversion module converting input voltage of power panel to a plurality of voltage source for circuit working in the veneer, and a overflowing thermofuse, wherein the input voltage imports the voltage conversion module via the overflowing thermofuse. The utility model further comprises a photocoupler and an alarm processing module for sending alarm signals and handling alarm signals. The utility model not only makes use of cheep and easy realizing circuit, but also performances the protection and alarms to the whole power supply system when individual veneer power broken in the communication system. Compared with present ordinary circuits, the circuit is simple, reliable, and economical.
Description
Technical field
The utility model relates to the communication system power technique fields, relates in particular to a kind of power protecting circuit that is used for the communication service veneer, protects power-supply system and carry out alarming processing when one-board power supply generation over current fault.
Background technology
In the communication system, the power protection of hardware system is extremely important, and in the communication system that adopts the power panel centrally connected power supply, the alarm when the communication service veneer breaks down and the protection of power panel are particularly important.
In the present single board design, when the overcurrent fault takes place, on veneer, generally take following several mode to handle:
(1) do not add the overcurrent protection measure.As shown in Figure 1, when the short circuit overcurrent fault occurring, overcurrent protection is set on power panel directly, stops power supply in the Board Power up source.At this moment power panel generally can not damage, and still, provides other veneer of power supply to be cut off the power supply simultaneously by this power panel yet, and this will make whole system work be had a strong impact on.
(2) current comparator is set on veneer, uses transformer circuit to protect, as shown in Figure 2.But, when the power supply short circuit fault appears in the method on veneer, cause the damage of transformer easily.
(3) adopt PTC (positive temperature coefficient) thermistor on veneer, as shown in Figure 3, when overcurrent appearred in veneer, it can play current limitation effect, and can be from recovering.But when veneer generation power supply short circuit fault, this measure still can consume certain power, and causes the more serious system failure easily at unattended machine room or outdoor equipment.
(4) on veneer, adopt current detecting, cooperate the form of relay switch, when overcurrent occurring, adopt the mode of transfer relay switch to come the deenergization input.But this method cost is higher, the circuit form more complicated.
The utility model content
Technical problem to be solved in the utility model is, a kind of power protecting circuit that is used for the communication service veneer is provided, and is used for effectively the safety of protection system power supply when the indivedual veneer generation power failure of communication system.
The utility model provides a kind of power protecting circuit that is used for the communication service veneer; in adopting power panel centrally connected power supply system; when the one-board power supply overcurrent; power panel is protected, being comprised: voltage transformation module will be converted to the needed various voltage sources of circuit working in the veneer from the input voltage of power panel; it is characterized in that; also comprise: the overcurrent thermo-fuse, described input voltage is imported described voltage transformation module through behind this overcurrent thermo-fuse.
Described power protecting circuit further comprises:
Optical coupler, cross-over connection is between described input voltage and described voltage transformation module from power panel, when described overcurrent thermo-fuse fusing, when described voltage transformation module stops veneer inside output current, by power failure alarm signal of optical coupler induction output.
Described optical coupler passes through first resistor and the second resistor cross-over connection respectively between described input voltage and described voltage transformation module from power panel.
Described power protecting circuit further comprises: warning processing module, link to each other with described optical coupler, and the alarm signal that sends through described optical coupler to be handled, this warning processing module comprises:
Driving and isolated location, intermediate treatment unit, CPU processing unit wherein, drive with isolated location and receive described alarm signal, and this alarm signal is driven and isolates; The intermediate treatment unit links to each other with isolated location with described driving, to the processing of classifying of the alarm signal after isolation drive, is that each alarm signal is distributed priority; The CPU processing unit links to each other with the intermediate treatment unit, to the alarm signal after handling through classification, discerns and respective handling by certain priority assignment strategy.
Described driving isolation processing unit has chip for driving.Described alarm signal is sent to warning processing module by transmission line.
When power failure appears in indivedual veneers in system; the utility model effectively protection system power supply is not damaged; protect the power supply of other veneer unaffected; reduce the influence of fault to greatest extent, can timely malfunction be reported higher level's control board simultaneously and handle working state of system.
The utility model does not adopt complicated current detecting manner of comparison and transformer circuit; there is not the higher relay overcurrent protection mode of use cost yet; and only utilize cost circuit low, that be easy to realize to come the protection and the power failure alarm of the system power supply of veneer in the realization system; good reliability; the cost performance height has made full use of the function of system's controlled processing unit simultaneously.
Description of drawings
Fig. 1 is a kind of circuit function block diagram that veneer does not add current-limiting protection in the background technology;
Fig. 2 is the another kind of circuit function block diagram that veneer utilizes transformer in the background technology;
Fig. 3 is another circuit function block diagram that veneer utilizes thermistor in the background technology;
Fig. 4 is the allomeric function block diagram according to a kind of power protecting circuit of the utility model embodiment;
Fig. 5 is according to the overcurrent protection of the utility model embodiment and the exploded view of alarm module;
Fig. 6 is the exploded view according to the warning processing module of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, by the detailed description to preferred embodiment of the present utility model, the technical scheme and the beneficial effect thereof of the utility model method are apparent with making.
As shown in Figure 4, be allomeric function block diagram of the present utility model, described power protecting circuit comprises two modules: overcurrent protection and alarm module, warning processing module, represent with label 1 and label 2 respectively.Wherein, overcurrent protection and alarm module (module 1) receive the power supply input of the power panel of the system's centrally connected power supply of doing for oneself, when veneer generation over current fault, getting in touch between disconnection and input power supply, and generation power failure alarm signal reports warning processing module (module 2); Warning processing module (module 2) is then made respective handling according to alarm signal.
As shown in Figure 5, be the Function Decomposition figure of module 1 shown in Figure 4 in the utility model, protection and alarm module are divided into: 102 two submodules of current foldback circuit 101 and alarm generation circuit, wherein:
In current foldback circuit 101; the overcurrent thermo-fuse input voltage modular converter of power supply input VCC_IN from the system power supply plate through being connected in series; voltage transformation module is converted to the required various voltage source V CC of veneer work with input voltage; when over current fault takes place; the fusing of overcurrent thermo-fuse, getting in touch between disconnection and input power supply is with the protection system power supply; simultaneously, voltage conversion unit stops to provide operating voltage to veneer.
Produce in the circuit 102 in alarm, mainly comprise an optical coupler, it is respectively by first resistor R 1, second resistor R 2, cross-over connection is between the output voltage V CC from the input voltage VCC_IN of power panel and described voltage transformation module, when the fusing of overcurrent thermo-fuse, when voltage transformation module stops veneer inside output current, respond to power failure alarm signal ALARM of output by optical coupler thereupon, and alarm signal is reported warning processing module by transmission line, here transmission line can be the side circuit line, also can be other transmission form.
As shown in Figure 6, be the Function Decomposition figure of warning processing module of the present utility model, be divided into:
Drive and isolated location 201, be used for carrying out isolation drive from the alarm signal of veneer input;
Intermediate treatment unit 202 is used for the processing of classifying of the alarm signal after isolation drive, is that each alarm signal is distributed priority;
CPU processing unit 203 is used for the alarm signal after handling through classification is discerned and respective handling by certain priority assignment strategy.
Warning processing module generally is the part of control veneer in the system, and the control veneer is logically as the higher level veneer of overcurrent protection with the alarm veneer.In Fig. 6, when warning processing module is received alarm signal from overcurrent protection and alarm module, drive and isolated location 201 at first drives alarm signal and isolates; Then, alarm intermediate treatment unit 202, according to the needs of system design to alarm signal according to priority preset, distribute combination; At last, CPU processing unit 203 is responsible for the alarm status request signal that submodule 202 is sent here is handled.
When the utility model has been realized in a kind of communication system indivedual one-board power supply fault, the protection of whole system power supply, and can be promptly and accurately to system's report and alarm, than circuit commonly used now have simply, good reliability, characteristics that cost performance is high.
Should be understood that; the above-mentioned description at specific embodiment of the utility model is comparatively concrete; therefore can not think the restriction of the utility model scope of patent protection; for a person skilled in the art; can make various possible changes or distortion according to technical conceive of the present utility model, and all these changes or distortion all should belong to the protection range of the utility model claims.
Claims (6)
1, a kind of power protecting circuit that is used for the communication service veneer; be arranged in the system that adopts the power panel centrally connected power supply; comprise voltage transformation module; it is characterized in that; also comprise: the overcurrent thermo-fuse; input voltage from power panel inputs to described overcurrent thermo-fuse, exports described voltage transformation module to through described overcurrent thermo-fuse.
2, circuit as claimed in claim 1 is characterized in that, further comprises:
Optical coupler, cross-over connection are between described overcurrent thermo-fuse input and described voltage transformation module output, and the overcurrent thermo-fuse fuses, power failure alarm signal of this optical coupler induction output.
3, circuit as claimed in claim 2, it is characterized in that, further comprise: warning processing module, link to each other with described optical coupler, this warning processing module comprises: drive the isolation processing unit, the intermediate treatment unit, the CPU processing unit, wherein, driving the isolation processing unit links to each other with the power failure alarm signal output of described optical coupler, the output of alarm signal links to each other after intermediate treatment unit input and described driving and the isolated location output isolation processing, and CPU processing unit input handles afterwards with the classification of intermediate treatment unit that the output of outputting alarm signal links to each other.
4, circuit as claimed in claim 3 is characterized in that, described driving isolation processing unit has chip for driving.
5, circuit as claimed in claim 3 is characterized in that, described alarm signal is sent to warning processing module by transmission line from the output of described optical coupler.
6, circuit as claimed in claim 2 is characterized in that, described optical coupler passes through first resistor and the second resistor cross-over connection respectively between described input voltage and described voltage transformation module from power panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520146917 CN2886891Y (en) | 2005-12-26 | 2005-12-26 | Power supply protection circuit for communication service single board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520146917 CN2886891Y (en) | 2005-12-26 | 2005-12-26 | Power supply protection circuit for communication service single board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2886891Y true CN2886891Y (en) | 2007-04-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520146917 Expired - Fee Related CN2886891Y (en) | 2005-12-26 | 2005-12-26 | Power supply protection circuit for communication service single board |
Country Status (1)
| Country | Link |
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| CN (1) | CN2886891Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102347601A (en) * | 2010-08-04 | 2012-02-08 | 鸿富锦精密工业（深圳）有限公司 | Power protection circuit |
| CN101741053B (en) * | 2008-11-05 | 2012-05-30 | 鸿富锦精密工业（深圳）有限公司 | Power supply device |
| CN105119661A (en) * | 2015-07-20 | 2015-12-02 | 上海斐讯数据通信技术有限公司 | Multichannel load sharing power supply system |
| CN106411416A (en) * | 2016-11-23 | 2017-02-15 | 迈普通信技术股份有限公司 | Power supply device, optical module power supply system and power supply control method |
-
2005
- 2005-12-26 CN CN 200520146917 patent/CN2886891Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101741053B (en) * | 2008-11-05 | 2012-05-30 | 鸿富锦精密工业（深圳）有限公司 | Power supply device |
| CN102347601A (en) * | 2010-08-04 | 2012-02-08 | 鸿富锦精密工业（深圳）有限公司 | Power protection circuit |
| CN102347601B (en) * | 2010-08-04 | 2014-01-22 | 鸿富锦精密工业（深圳）有限公司 | Power protection circuit |
| CN105119661A (en) * | 2015-07-20 | 2015-12-02 | 上海斐讯数据通信技术有限公司 | Multichannel load sharing power supply system |
| CN106411416A (en) * | 2016-11-23 | 2017-02-15 | 迈普通信技术股份有限公司 | Power supply device, optical module power supply system and power supply control method |
| CN106411416B (en) * | 2016-11-23 | 2019-01-01 | 迈普通信技术股份有限公司 | Power supply unit, optical module power supply system and method for controlling power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070404 Termination date: 20131226 |