CN112269462A - Board card protection method, device and equipment - Google Patents
Board card protection method, device and equipment Download PDFInfo
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- CN112269462A CN112269462A CN202011104435.2A CN202011104435A CN112269462A CN 112269462 A CN112269462 A CN 112269462A CN 202011104435 A CN202011104435 A CN 202011104435A CN 112269462 A CN112269462 A CN 112269462A
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- 238000004590 computer program Methods 0.000 claims description 6
- 230000001960 triggered effect Effects 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 17
- 230000002159 abnormal effect Effects 0.000 abstract description 13
- 230000009286 beneficial effect Effects 0.000 abstract description 2
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- 238000010586 diagram Methods 0.000 description 6
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- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/30—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations
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Abstract
The invention discloses a board protection method, because the impedance of a power connector to be tested can be reflected by the actual voltage difference value at the two ends, the power supply loop where the power connector to be tested is positioned can be controlled to be disconnected when the impedance of the power connector to be tested is judged to be abnormal according to the actual voltage difference value, so that a board connected with the power connector to be tested is prevented from being burnt out, the maintenance cost is reduced, and the long-time shutdown of the board caused by maintenance can be avoided. The invention also discloses a board card protection device and equipment, which have the same beneficial effects as the board card protection method.
Description
Technical Field
The invention relates to the field of servers, in particular to a board protection method, and further relates to a board protection device and equipment.
Background
The connection of the power supply circuit between different boards can be usually realized through a power connector, but the power connector is likely to cause the increase of the impedance of the power connector due to various types of abnormal contact states (such as loosened fixing screws or deformed contact surfaces), so that the power loss is increased, a large amount of heat is generated, the board connected with the power connector is likely to be burned out, the maintenance cost is increased, and the normal work of the board is influenced.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a board protection method, which ensures that a board connected with a power connector to be tested is not burnt out, reduces the maintenance cost and simultaneously can avoid the long-time shutdown of the board caused by maintenance; another object of the present invention is to provide a board protection device and apparatus, which can prevent the board connected to the power connector to be tested from being burned out, reduce the maintenance cost, and avoid the long-time shutdown of the board due to maintenance.
In order to solve the technical problem, the invention provides a board protection method, which comprises the following steps:
acquiring an actual voltage difference value of two ends of a power connector to be detected;
judging whether the difference value of the actual voltage difference value and a preset standard voltage difference value is larger than a first preset threshold value or not;
and if so, controlling the power supply loop where the power connector to be tested is positioned to be disconnected.
Preferably, the board card protection method further includes:
the method comprises the steps of obtaining a voltage difference value of two ends of a precision resistor connected in series in a power supply loop where a power connector to be tested is located and a standard resistance value of the power connector to be tested in advance, and determining a preset standard voltage difference value of the power connector.
Preferably, the acquiring an actual voltage difference value at two ends of the power connector to be tested specifically includes:
and acquiring the actual voltage difference value of the two ends of the power connector to be tested through a current sampling chip connected with a high-frequency filter circuit.
Preferably, the step of controlling the disconnection of the power supply loop where the power connector to be detected is located specifically includes:
and controlling an on-off control circuit connected in series in the power supply loop to be switched off so as to disconnect the power supply loop.
Preferably, the on-off control circuit comprises a controllable switch and a soft start circuit connected to a control end of the controllable switch;
the soft start circuit comprises a resistor and a capacitor, wherein the first end of the resistor is connected with the first end of the capacitor and the control end of the controllable switch respectively, the second end of the capacitor is grounded, and the second end of the resistor is connected with the controller.
Preferably, after the difference between the actual voltage difference and the preset standard voltage difference is judged to be greater than the first preset threshold, the board card protection method further includes:
and the control prompter prompts the abnormity of the power connector to be tested.
Preferably, before the power supply circuit controlling the power connector to be tested is disconnected, the board card protection method further includes:
acquiring an actual temperature value of the power connector to be detected;
judging whether the difference value of the actual temperature value and a preset standard temperature value is larger than a second preset threshold value or not;
and if so, executing the step of controlling the power supply loop where the power connector to be tested is positioned to be disconnected.
Preferably, the obtaining of the actual temperature value of the power connector to be detected specifically includes:
acquiring an actual temperature value of the power connector to be detected in a digital signal form through a temperature sensor and a temperature sampling chip;
the temperature sensor is arranged on the power connector to be tested and is connected with the temperature sampling chip.
In order to solve the above technical problem, the present invention further provides a board protection device, including:
the acquisition module is used for acquiring an actual voltage difference value of two ends of the power connector to be detected;
the judging module is used for judging whether the difference value between the actual voltage difference value and a preset standard voltage difference value is larger than a first preset threshold value or not, and if yes, the control module is triggered;
and the control module is used for controlling the disconnection of the power supply loop where the power connector to be detected is located.
In order to solve the above technical problem, the present invention further provides a board protection device, including:
a memory for storing a computer program;
a processor, configured to implement the steps of the board protection method according to any one of the above embodiments when executing the computer program.
The invention provides a board protection method, because the impedance of a power connector to be tested can be reflected by the actual voltage difference value at the two ends, the power supply loop where the power connector to be tested is positioned can be controlled to be disconnected when the impedance of the power connector to be tested is judged to be abnormal according to the actual voltage difference value, so that the board connected with the power connector to be tested is prevented from being burnt out, the maintenance cost is reduced, and the long-time shutdown of the board caused by maintenance can be avoided.
The invention also provides a board card protection device and equipment, which have the same beneficial effects as the board card protection method.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic flow chart of a board protection method according to the present invention;
fig. 2 is a schematic structural diagram of a card protection device provided in the present invention;
fig. 3 is a schematic structural diagram of a card protection device provided in the present invention;
fig. 4 is a schematic structural diagram of another board card protection device provided by the present invention.
Detailed Description
The core of the invention is to provide a board protection method, which ensures that the board connected with the power connector to be tested is not burnt out, reduces the maintenance cost and simultaneously can avoid the long-time shutdown of the board caused by maintenance; another object of the present invention is to provide a board protection device and apparatus, which can prevent the board connected to the power connector to be tested from being burned out, reduce the maintenance cost, and avoid the long-time shutdown of the board due to maintenance.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of a board protection method provided by the present invention, where the board protection method includes:
step S1: acquiring an actual voltage difference value of two ends of a power connector X1 to be detected;
specifically, in view of the technical problems in the background art, and in view of the fact that when the impedance of the power connector to be tested X1 is increased due to the abnormal contact state, the voltage drop across the power connector to be tested X1 is also increased, in the embodiment of the present invention, the actual voltage difference across the power connector to be tested X1 may be obtained first, and it is expected to analyze whether the impedance of the power connector to be tested X1 is abnormal based on the actual voltage difference across the power connector to be tested X1, so as to determine whether the problem of the abnormal contact state exists.
The specific circuit for acquiring the actual voltage difference may be various, for example, the actual voltage difference may be obtained by sampling through a current sampling chip, and the embodiment of the present invention is not limited herein.
Step S2: judging whether the difference value of the actual voltage difference value and the preset standard voltage difference value is larger than a first preset threshold value or not;
specifically, considering that the impedance of the power connector X1 to be tested is standard in the standard contact state, and since the currents in the power supply loop are consistent, the corresponding voltage drop thereof should also be standard, so that the power connector X1 to be tested has a standard voltage difference value in the standard state, a preset standard voltage difference value may be obtained first through various detection methods, and in this step, whether the voltage drop of the power connector X1 to be tested is normal, that is, whether the impedance of the power connector X1 to be tested is too large may be determined by determining whether the difference value between the actual voltage difference value and the preset standard voltage difference value is greater than a first preset threshold value.
The first preset threshold may be set autonomously, for example, may be set to be equal to a value of a preset standard voltage difference, and the embodiment of the present invention is not limited herein.
Step S3: if yes, the power supply loop of the power connector X1 to be tested is controlled to be disconnected.
Specifically, when the difference between the actual voltage difference and the preset standard voltage difference is greater than the first preset threshold, it indicates that the impedance of the power connector X1 to be tested is too large, which also indicates that there is a possibility that the temperature of the power connector X1 to be tested is excessively raised and the connected board card is burned out, and at this time, for safety, the power supply loop where the power connector X1 to be tested is located may be controlled to be disconnected, so that the potential safety hazard is avoided, and the maintenance cost is reduced.
The manner of controlling the disconnection of the power supply circuit where the power connector X1 to be tested is located may be various types, for example, controlling a certain switching device in the power supply circuit to be disconnected, and the embodiment of the present invention is not limited herein.
Specifically, in order to improve the accuracy of the determination and eliminate the accidental factors, in the embodiment of the present invention, when the difference between the actual voltage difference and the preset standard voltage difference is greater than the first preset threshold, the cumulative number of determinations with an initial value of zero may be added together to determine whether the cumulative number reaches a preset number (for example, 5), if not, the step S1 may be returned, and if the preset number is reached, the power supply loop in which the power supply connector X1 is located may be controlled to be disconnected.
In addition, it should be noted that there may be many specific situations of abnormal contact state, for example, the power connector fixing screw may loosen, the contact surface may be oxidized, the contact surface may deform, the contact may loosen due to vibration or dropping, the contact may be insufficient due to structural tolerance, or the connector may not be locked in place, and the embodiments of the present invention are not limited herein.
The invention provides a board protection method, because the impedance of a power connector to be tested can be reflected by the actual voltage difference value at the two ends, the power supply loop where the power connector to be tested is positioned can be controlled to be disconnected when the impedance of the power connector to be tested is judged to be abnormal according to the actual voltage difference value, so that the board connected with the power connector to be tested is prevented from being burnt out, the maintenance cost is reduced, and the long-time shutdown of the board caused by maintenance can be avoided.
For better explaining the embodiment of the present invention, please refer to fig. 2, fig. 2 is a schematic structural diagram of a board protection device provided by the present invention, and on the basis of the above embodiment:
as a preferred embodiment, the board card protection method further includes:
the preset standard voltage difference value of the power connector is determined in advance by obtaining the voltage difference value of two ends of a precision resistor R1 connected in series in a power supply loop where the power connector X1 to be detected is located and the standard resistance value of the power connector X1 to be detected.
Specifically, this step may be performed when the power connector X1 to be tested is just installed (to ensure that the installation contact state of the power electrolyzer is normal), the current value in the power supply loop may be obtained by dividing the voltage difference value between the two ends of the precision resistor R1 by the resistance value of the precision resistor R1, and the preset standard voltage value may be obtained by multiplying the current value by the standard resistance value of the power connector X1 to be tested.
Specifically, in the embodiment of the present invention, the voltage difference between the two ends of the precision resistor R1 can be obtained through the hot swap chip in fig. 2, and a high frequency filtering device composed of the differential mode filtering capacitor C5, the common mode filtering capacitor C4, and C6 is provided to filter the high frequency interference.
In addition, in fig. 2, the hot-plug chip may also perform current value monitoring during the normal power supply of the power supply circuit, and directly control the power supply circuit to be disconnected when the current value in the circuit is too large.
Specifically, the method for acquiring the preset standard voltage difference value is simple, low in cost and high in precision.
Of course, in addition to the specific manner of obtaining the preset standard voltage difference value in the embodiment of the present invention, the preset standard voltage difference value may also be obtained in other specific manners, and the embodiment of the present invention is not limited herein.
As a preferred embodiment, the step of obtaining the actual voltage difference value across the power connector X1 to be tested specifically includes:
and acquiring the actual voltage difference value of two ends of the power connector X1 to be detected through a current sampling chip connected with a high-frequency filter circuit.
Specifically, the current sampling chip can obtain the actual voltage difference value at two ends of the power connector to be detected X1, and has the advantages of simple structure, small volume, low cost and the like, the feedback wires at two ends of the power connector to be detected X1 can be connected to the current sampling chip in a Kelvin wire arrangement mode, and the current sampling chip can convert the obtained voltage difference information into digital signals and then transmit the digital signals to the processor for processing in a data bus mode.
Specifically, in order to avoid high-frequency interference on voltage value sampling at two ends of the power supply connector X1 to be tested, a high-frequency filtering module may be added to perform high-frequency filtering.
The high-frequency filtering module may be of various types, for example, the high-frequency filtering module shown in fig. 2 may include a differential filter capacitor C2, a common mode filter capacitor C1, a common mode filter capacitor C3, and the like, which is not limited herein.
As a preferred embodiment, the step of controlling the disconnection of the power supply loop where the power connector X1 to be tested is located specifically includes:
and controlling an on-off control circuit connected in series in the power supply loop to be switched off so as to disconnect the power supply loop.
Specifically, the on-off control circuit is arranged in the power supply loop, so that the power supply loop can be rapidly controlled to be disconnected by controlling the on-off control circuit when needed, and convenience is improved.
The on-off control circuit may be original in the power supply circuit or may be added subsequently, and the embodiment of the present invention is not limited herein.
As a preferred embodiment, the on-off control circuit comprises a controllable switch and a soft start circuit connected to a control end of the controllable switch;
the soft start circuit comprises a resistor and a capacitor, wherein the first end of the resistor is connected with the first end of the capacitor and the control end of the controllable switch respectively, the second end of the capacitor is grounded, and the second end of the resistor is connected with the controller.
Specifically, in order to control the on-time of the controllable switch at the instant of conducting so as to protect the controllable switch, the soft start circuit is arranged in the embodiment of the invention, so that the controllable switch can be slowly started, and the service life of the controllable switch is prolonged.
The soft start circuit composed of the resistor and the capacitor has the advantages of simple structure, low cost, small size and the like.
Of course, the soft start circuit may be in various types other than a resistor and a capacitor, and the embodiment of the present invention is not limited herein.
Of course, besides the on-off control circuit composed of the controllable switch and the soft start circuit in the embodiment of the present invention, the specific form of the on-off control circuit may also be other various types, and the embodiment of the present invention is not limited herein.
As a preferred embodiment, after determining that the difference between the actual voltage difference and the preset standard voltage difference is greater than the first preset threshold, the board protection method further includes:
the control prompter prompts that the power supply connector X1 to be tested is abnormal.
Specifically, in order to facilitate a worker to quickly know the abnormal state of the power supply connector X1 to be tested and perform corresponding maintenance, in the embodiment of the present invention, the prompter may be controlled to prompt that the power supply connector X1 is abnormal when the difference between the actual voltage difference and the preset standard voltage difference is greater than the first preset threshold, so that the worker may maintain the power supply connector X1 to be tested at the first time and ensure that the power supply loop and the corresponding board card are quickly recovered to work, thereby improving the working efficiency.
Specifically, the prompting device may be of various types, for example, a display or an audible alarm, and may also perform log recording and specifically record the detected actual voltage difference value when it is determined that the difference value between the actual voltage difference value and the preset standard voltage difference value is greater than the first preset threshold value, so that a worker performs fault analysis, and the like.
As a preferred embodiment, before controlling the power supply circuit of the power supply connector X1 to be tested to be disconnected, the board protection method further includes:
acquiring an actual temperature value of a power connector X1 to be detected;
judging whether the difference value of the actual temperature value and the preset standard temperature value is larger than a second preset threshold value or not;
if the current value is larger than the preset value, the step of controlling the power supply loop where the power connector X1 to be detected is located to be disconnected is executed.
Specifically, considering that the change of the temperature value is also one of the performance characteristics of the abnormal contact state of the power connector X1 to be tested, the state of the power connector X1 to be tested can be monitored by monitoring the actual temperature value, so as to ensure that the abnormal state of the power connector X1 to be tested can be accurately monitored and correspondingly protected, and the reliability of board protection is improved.
Specifically, in order to improve the accuracy of the determination and eliminate the accidental factor, the actual temperature value in the embodiment of the present invention may be an average value of temperature values obtained by sampling N times continuously, N may be set autonomously, for example, 10 times, and the like, and the embodiment of the present invention is not limited herein.
The second preset threshold may be set autonomously, for example, may be set to 10 ℃, and the embodiment of the present invention is not limited herein.
As a preferred embodiment, the obtaining of the actual temperature value of the power connector X1 to be tested specifically includes:
acquiring an actual temperature value of a power connector X1 to be detected in a digital signal form through a temperature sensor and a temperature sampling chip;
the temperature sensor is arranged on the power connector X1 to be detected, and is connected with the temperature sampling chip.
Specifically, the temperature sampling chip can perform analog-to-digital conversion on an analog electric signal representing a temperature value obtained by sampling the temperature sensor, and transmit the digital signal to the processor for processing in a data bus manner.
Specifically, as shown in fig. 2, the temperature sensor may be a temperature sensor based on a transistor Q1, and of course, the temperature sensor may also be of other types, which is not limited herein.
Specifically, the actual temperature value acquisition circuit composed of the temperature sensor and the temperature sampling chip in the embodiment of the invention has the advantages of simple structure, low cost, high accuracy and the like.
Of course, besides the above structure, the actual temperature value collecting circuit may also be in other various specific forms, and the embodiment of the present invention is not limited herein.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a board card protection device provided in the present invention, the board card protection device includes:
the acquisition module 1 is used for acquiring an actual voltage difference value at two ends of a power connector X1 to be detected;
the judging module 2 is used for judging whether the difference value between the actual voltage difference value and the preset standard voltage difference value is larger than a first preset threshold value or not, and if so, triggering the control module;
and the control module 3 is used for controlling the disconnection of the power supply loop where the power connector X1 to be tested is located.
For the description of the board protection device in the embodiment of the present invention, please refer to the contents in the foregoing board protection method embodiment, and the embodiment of the present invention is not described herein again.
Referring to fig. 4, fig. 4 is a schematic structural diagram of another board protection device provided in the present invention, where the board protection device includes:
a memory 4 for storing a computer program;
and the processor 5 is configured to implement the steps of the board protection method in the foregoing embodiments when executing the computer program.
For the description of the board protection device in the embodiment of the present invention, please refer to the contents in the foregoing board protection method embodiment, and the embodiment of the present invention is not described herein again.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A board protection method is characterized by comprising the following steps:
acquiring an actual voltage difference value of two ends of a power connector to be detected;
judging whether the difference value of the actual voltage difference value and a preset standard voltage difference value is larger than a first preset threshold value or not;
and if so, controlling the power supply loop where the power connector to be tested is positioned to be disconnected.
2. The board protection method according to claim 1, further comprising:
the method comprises the steps of obtaining a voltage difference value of two ends of a precision resistor connected in series in a power supply loop where a power connector to be tested is located and a standard resistance value of the power connector to be tested in advance, and determining a preset standard voltage difference value of the power connector.
3. The board card protection method according to claim 2, wherein the obtaining of the actual voltage difference value across the power connector to be tested specifically includes:
and acquiring the actual voltage difference value of the two ends of the power connector to be tested through a current sampling chip connected with a high-frequency filter circuit.
4. The board card protection method according to claim 3, wherein the controlling the disconnection of the power supply loop where the power connector to be tested is located specifically comprises:
and controlling an on-off control circuit connected in series in the power supply loop to be switched off so as to disconnect the power supply loop.
5. The board card protection method according to claim 4, wherein the on-off control circuit comprises a controllable switch and a soft start circuit connected to a control end of the controllable switch;
the soft start circuit comprises a resistor and a capacitor, wherein the first end of the resistor is connected with the first end of the capacitor and the control end of the controllable switch respectively, the second end of the capacitor is grounded, and the second end of the resistor is connected with the controller.
6. The board protection method according to claim 5, wherein after determining that the difference between the actual voltage difference and the preset standard voltage difference is greater than a first preset threshold, the board protection method further comprises:
and the control prompter prompts the abnormity of the power connector to be tested.
7. The board protection method according to any one of claims 1 to 6, wherein before the power supply circuit controlling the power connector to be tested is disconnected, the board protection method further comprises:
acquiring an actual temperature value of the power connector to be detected;
judging whether the difference value of the actual temperature value and a preset standard temperature value is larger than a second preset threshold value or not;
and if so, executing the step of controlling the power supply loop where the power connector to be tested is positioned to be disconnected.
8. The board card protection method according to claim 7, wherein the obtaining of the actual temperature value of the power connector to be tested specifically includes:
acquiring an actual temperature value of the power connector to be detected in a digital signal form through a temperature sensor and a temperature sampling chip;
the temperature sensor is arranged on the power connector to be tested and is connected with the temperature sampling chip.
9. A card protection device, comprising:
the acquisition module is used for acquiring an actual voltage difference value of two ends of the power connector to be detected;
the judging module is used for judging whether the difference value between the actual voltage difference value and a preset standard voltage difference value is larger than a first preset threshold value or not, and if yes, the control module is triggered;
and the control module is used for controlling the disconnection of the power supply loop where the power connector to be detected is located.
10. A card protection device, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the board protection method according to any one of claims 1 to 8 when executing the computer program.
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| CN202011104435.2A CN112269462A (en) | 2020-10-15 | 2020-10-15 | Board card protection method, device and equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011104435.2A CN112269462A (en) | 2020-10-15 | 2020-10-15 | Board card protection method, device and equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113162015A (en) * | 2021-04-27 | 2021-07-23 | 湖南华自信息技术有限公司 | Abnormal positioning protection method and device for main board power supply |
| CN113721744A (en) * | 2021-07-28 | 2021-11-30 | 苏州浪潮智能科技有限公司 | Mainboard and signal connection system thereof |
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| CN108599290A (en) * | 2018-03-29 | 2018-09-28 | 珠海市魅族科技有限公司 | A kind of charge protection method, device, terminal device and storage medium |
| CN111596139A (en) * | 2020-06-18 | 2020-08-28 | 湖南小快智造电子科技有限公司 | Ground impedance abnormality detection circuit |
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| CN113162015A (en) * | 2021-04-27 | 2021-07-23 | 湖南华自信息技术有限公司 | Abnormal positioning protection method and device for main board power supply |
| CN113721744A (en) * | 2021-07-28 | 2021-11-30 | 苏州浪潮智能科技有限公司 | Mainboard and signal connection system thereof |
| CN113721744B (en) * | 2021-07-28 | 2023-07-21 | 苏州浪潮智能科技有限公司 | Mainboard and signal connection system thereof |
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