CN105183611A - Method for preventing PCB board card from being burnt out by detecting voltage - Google Patents
Method for preventing PCB board card from being burnt out by detecting voltage Download PDFInfo
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- CN105183611A CN105183611A CN201510609555.0A CN201510609555A CN105183611A CN 105183611 A CN105183611 A CN 105183611A CN 201510609555 A CN201510609555 A CN 201510609555A CN 105183611 A CN105183611 A CN 105183611A
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- Prior art keywords
- pcb
- copper foil
- voltage
- board card
- burning
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Links
- 238000000034 method Methods 0.000 title claims abstract description 31
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000011889 copper foil Substances 0.000 claims abstract description 28
- 238000013461 design Methods 0.000 claims abstract description 16
- 230000008569 process Effects 0.000 claims abstract description 11
- 238000012938 design process Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract 1
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
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- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a method for preventing a PCB card from being burnt down by detecting voltage, which comprises the following concrete implementation processes: the maximum current capacity of the Power copper foil of the PCB is quantified, namely a threshold value is set, then voltages at two ends of the passing copper foil are compared, once the voltages exceed the set threshold value, an alarm is given out, shutdown is completed before the PCB is burnt out, and the PCB is prevented from being burnt out. Compared with the prior art, the method for preventing the PCB board card from being burnt through detecting the voltage has the advantages that the PCB board card is prevented from being burnt through voltage detection, the PCB is shut down before being burnt, the problem that the PCB which cannot be covered by the traditional circuit design is solved, the practicability is high, and the popularization is easy.
Description
Technical field
The present invention relates to computer server technical field, specifically a kind of method that is practical, that prevent pcb board card from burning by detecting voltage.
Background technology
Along with the fast development of internet industry in recent years, the demand of industry to server is increasing.Meanwhile, to the system performance of server, have higher requirement in the aspects such as system stability.
With regard to the part of power supply; we can find that the voltage of large-scale server master board design is a lot; no matter be design and the protection in later stage in early stage; usually we are in the process of design; capital adds corresponding protection circuit; preventing board is stuck in the course of work and occurs uncertain factor, can cause damage to board, and the most serious damage is exactly cause board to burn.But the design preventing now board from burning just focuses on circuit design direction, to because of the rosin joint in PCB processing procedure process, short circuit and produce CAF in Long-Time Service process, the pcb board that the phenomenons such as copper ion migration cause burns, then not good way.
PCB burns final reason: by exceeding the electric current of its load-bearing capacity on less Power Copper Foil, PCB rapid, high volume is caused to generate heat, and then burn PCB, for overcoming the risk of burning PCB, the present invention proposes a kind of detecting voltage that utilized to the method for designing preventing pcb board from burning.
Summary of the invention
Technical assignment of the present invention is for above weak point, provides a kind of method that is practical, that prevent pcb board card from burning by detecting voltage.
By the method that detecting voltage prevents pcb board card from burning, its specific design process is:
Undertaken quantitatively, namely setting threshold value by the maximum current capability of the Power Copper Foil to PCB, then compared by the voltage at the Copper Foil two ends to process, once exceed the threshold value of setting, then send warning, before PCB burns, complete shutdown, prevent burning of PCB.
The assignment procedure of described threshold value is: when the PCB design of server, according to each Copper Foil on the PCB that design specification is determined by maximum current value and the resistance value of Copper Foil, calculate the maximum voltage difference V1 that Copper Foil two ends allow, then the voltage of the 3.3V in PCB is used, by electric resistance partial pressure, generate V1.
The trigger process of described warning is: the Copper Foil two ends on PCB solve sense line respectively, detect the voltage difference V2 of Copper Foil two ends when real-time working, V1 with V2 is connected by comparer, when V2 is greater than V1, then comparer sends low level signal, low level signal trigger server alerting signal.
A kind of method preventing pcb board card from burning by detecting voltage of the present invention, has the following advantages:
A kind of method preventing pcb board card from burning by detecting voltage that the present invention proposes, prevent burning of PCB by detecting voltage, before PCB burns, complete shutdown, solve the problem that PCB that traditional circuit design can not cover burns, practical, be easy to promote.
Accompanying drawing explanation
Accompanying drawing 1 realizes schematic diagram for of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
The invention provides a kind of method preventing pcb board card from burning by detecting voltage, as shown in Figure 1,
Its specific implementation process is:
Undertaken quantitatively, namely setting threshold value by the maximum current capability of the Power Copper Foil to PCB, then compared by the voltage at the Copper Foil two ends to process, once exceed the threshold value of setting, then send warning, before PCB burns, complete shutdown, prevent burning of PCB.
The assignment procedure of described threshold value is: when the PCB design of server, according to each Copper Foil on the PCB that design specification is determined by maximum current value and the resistance value of Copper Foil, calculate the maximum voltage difference V1 that Copper Foil two ends allow, then the voltage of the 3.3V in PCB is used, by electric resistance partial pressure, generate V1.
The trigger process of described warning is: the Copper Foil two ends on PCB solve sense line respectively, detect the voltage difference V2 of Copper Foil two ends when real-time working, V1 with V2 is connected by comparer, when V2 is greater than V1, then comparer sends low level signal, low level signal trigger server alerting signal.
Instantiation:
1), according to the design specification of PCB, get the PCB Copper Foil of design requirement 4A electric current, then the width of Copper Foil is 160mil, and length is 1000mil, and calculating its resistance value is 100 milliohms.Thus calculating it in by 4A electric current, the pressure reduction of PCB Copper Foil is 4X100=400 millivolt.
2) voltage difference, by sense detected, detecting mode is by resistance, and electric capacity and PCB Copper Foil realize in parallel realization, and the voltage of capacitance terminal is exactly voltage difference.Too small for voltage difference, can operational amplifier be increased, voltage difference is amplified 10 to 50 times, herein not to be enlarged into example.
3), by rationally arranging R1, the value (R1) of R2, guarantees that V2 equals 500 millivolts, and wherein 100 millivolts is design margin.
4), V1, V2 compared by comparer, once V1 is greater than 500 millivolts, then PCB is just in dangerous duty, occurs most probably to burn plate, at this time just needs comparer to send low level signal, remove trigger server warning device.
Like this, a kind of detecting voltage that utilized in this paper can be achieved to the method for designing preventing pcb board from burning.
Above-mentioned embodiment is only concrete case of the present invention; scope of patent protection of the present invention includes but not limited to above-mentioned embodiment; any a kind of claims by the detecting voltage method that prevents pcb board card from burning according to the invention and the those of ordinary skill of any described technical field to its suitable change done or replacement, all should fall into scope of patent protection of the present invention.
Claims (3)
1. the method preventing pcb board card from burning by detecting voltage, it is characterized in that, its specific design process is: undertaken quantitatively by the maximum current capability of the Power Copper Foil to PCB, namely threshold value is set, then compared by the voltage at the Copper Foil two ends to process, once exceed the threshold value of setting, then send warning, before PCB burns, complete shutdown, prevent burning of PCB.
2. a kind of method preventing pcb board card from burning by detecting voltage according to claim 1, it is characterized in that, the assignment procedure of described threshold value is: when the PCB design of server, according to each Copper Foil on the PCB that design specification is determined by maximum current value and the resistance value of Copper Foil, calculate the maximum voltage difference V1 that Copper Foil two ends allow, then use the voltage of the 3.3V in PCB, by electric resistance partial pressure, generate V1.
3. a kind of method preventing pcb board card from burning by detecting voltage according to claim 2, it is characterized in that, the trigger process of described warning is: the Copper Foil two ends on PCB solve sense line respectively, detect the voltage difference V2 of Copper Foil two ends when real-time working, V1 with V2 is connected by comparer, when V2 is greater than V1, then comparer sends low level signal, low level signal trigger server alerting signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510609555.0A CN105183611A (en) | 2015-09-23 | 2015-09-23 | Method for preventing PCB board card from being burnt out by detecting voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510609555.0A CN105183611A (en) | 2015-09-23 | 2015-09-23 | Method for preventing PCB board card from being burnt out by detecting voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105183611A true CN105183611A (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510609555.0A Pending CN105183611A (en) | 2015-09-23 | 2015-09-23 | Method for preventing PCB board card from being burnt out by detecting voltage |
Country Status (1)
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| CN (1) | CN105183611A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105912783A (en) * | 2016-04-12 | 2016-08-31 | 浪潮集团有限公司 | Method and device for detection of PCB design scheme |
| CN106055459A (en) * | 2016-05-26 | 2016-10-26 | 浪潮电子信息产业股份有限公司 | Server capable of protecting board card from being burnt out and method for preventing server board card from being burnt out |
| CN106405211A (en) * | 2016-10-18 | 2017-02-15 | 上海希形科技有限公司 | PCB (Printed Circuit Board) large current detection device |
| CN110514949A (en) * | 2019-09-09 | 2019-11-29 | 珠海格力智能装备有限公司 | Detection method and device for printed circuit board assembly, storage medium and processor |
| CN111258405A (en) * | 2020-01-18 | 2020-06-09 | 苏州浪潮智能科技有限公司 | Server mainboard burning prevention system and method |
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| US20070074897A1 (en) * | 2005-09-08 | 2007-04-05 | Ronald Lashley | Thermal event detection on printed wire boards |
| CN101661055A (en) * | 2008-08-27 | 2010-03-03 | 中兴通讯股份有限公司 | Current alarm method and current alarm device of active circuit |
| CN102055168A (en) * | 2009-10-28 | 2011-05-11 | 中国科学院微电子研究所 | Over-temperature protection circuit |
| CN202004424U (en) * | 2011-02-16 | 2011-10-05 | 天合汽车零部件（苏州）有限公司 | Printed circuit board assembly (PCBA) overheating protection control circuit |
-
2015
- 2015-09-23 CN CN201510609555.0A patent/CN105183611A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070074897A1 (en) * | 2005-09-08 | 2007-04-05 | Ronald Lashley | Thermal event detection on printed wire boards |
| CN101661055A (en) * | 2008-08-27 | 2010-03-03 | 中兴通讯股份有限公司 | Current alarm method and current alarm device of active circuit |
| CN102055168A (en) * | 2009-10-28 | 2011-05-11 | 中国科学院微电子研究所 | Over-temperature protection circuit |
| CN202004424U (en) * | 2011-02-16 | 2011-10-05 | 天合汽车零部件（苏州）有限公司 | Printed circuit board assembly (PCBA) overheating protection control circuit |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105912783A (en) * | 2016-04-12 | 2016-08-31 | 浪潮集团有限公司 | Method and device for detection of PCB design scheme |
| CN105912783B (en) * | 2016-04-12 | 2019-07-02 | 山东浪潮人工智能研究院有限公司 | The method and device that a kind of pair of PCB design scheme is detected |
| CN106055459A (en) * | 2016-05-26 | 2016-10-26 | 浪潮电子信息产业股份有限公司 | Server capable of protecting board card from being burnt out and method for preventing server board card from being burnt out |
| CN106405211A (en) * | 2016-10-18 | 2017-02-15 | 上海希形科技有限公司 | PCB (Printed Circuit Board) large current detection device |
| CN110514949A (en) * | 2019-09-09 | 2019-11-29 | 珠海格力智能装备有限公司 | Detection method and device for printed circuit board assembly, storage medium and processor |
| CN111258405A (en) * | 2020-01-18 | 2020-06-09 | 苏州浪潮智能科技有限公司 | Server mainboard burning prevention system and method |
| CN111258405B (en) * | 2020-01-18 | 2021-11-23 | 腾讯科技（深圳）有限公司 | Server mainboard burning prevention system and method |
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Application publication date: 20151223 |