CN112462148A - Method, device and equipment for confirming capacitance capacity decline through constant current - Google Patents
Method, device and equipment for confirming capacitance capacity decline through constant current Download PDFInfo
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- CN112462148A CN112462148A CN202011182670.1A CN202011182670A CN112462148A CN 112462148 A CN112462148 A CN 112462148A CN 202011182670 A CN202011182670 A CN 202011182670A CN 112462148 A CN112462148 A CN 112462148A
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- 230000007423 decrease Effects 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000003990 capacitor Substances 0.000 claims abstract description 62
- 238000007600 charging Methods 0.000 claims abstract description 50
- 238000012544 monitoring process Methods 0.000 claims abstract description 21
- 230000015556 catabolic process Effects 0.000 claims abstract description 15
- 238000006731 degradation reaction Methods 0.000 claims abstract description 15
- 238000004590 computer program Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 241000135164 Timea Species 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2605—Measuring capacitance
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
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Abstract
The invention provides a method for confirming capacitance capacity decline through constant current, which comprises the following steps: establishing a constant current source, and charging a capacitor to be confirmed in a server power supply circuit; monitoring the charging voltage establishment time of the constant current source to the capacitor to be confirmed through a logic chip, and setting the establishment time as a first time threshold; setting a second time threshold according to the first time threshold, wherein the second time threshold is smaller than the first time threshold; the charging voltage reestablishment time when the server power supply circuit is started every time is monitored through the logic chip, the charging voltage reestablishment time is compared with the first time threshold and the second time threshold, whether the capacitance capacity is degraded or not is judged, the degradation condition of the capacitance capacity can be effectively predicted by monitoring the charging time of the capacitance, and the stability of the server is effectively improved.
Description
Technical Field
The invention relates to the technical field of server power supply, in particular to a method, a device and equipment for confirming capacity decline of a capacitor through constant current.
Background
The existing server is required to be larger and larger, the specification is higher and higher, the difference between the server and a common personal computer is stability, because the server is required to be capable of being used by a plurality of users online at the same time, the stability and the reliability are very important, in order to improve the stability of the server, a high-quality hardware power supply is required to be designed to improve the reliability of the whole server, and in the view of designing a power supply from a server board end DC to DC, the power consumed by each IC is required to be stably provided.
The server needs to be used and operated for a long time, but when the server goes wrong, the power supply is forced to be turned off or restarted, and the problem is usually directed to the power supply, so that how to stably provide the required power supply by the power supply is very important in component selection and screening, and the capacitor is an indispensable component in circuit design. The main functions of the capacitor include: filtering, signal filtering, compensation, energy storage, charging and discharging and the like.
In order to stabilize the output voltage, a large number of capacitors must be placed at the output end during design, often the capacitance reaches thousands of microfarads, so that the service life and stability of the capacitors are directly related to the power supply stability of the power supply, and therefore a detection method for capacitor capacitance decline is urgently needed, and the decline condition of the capacitors can be predicted to predict the power supply fault in advance.
Disclosure of Invention
The invention provides a method for confirming capacitor capacity decline through constant current, which can effectively predict the decline condition of the capacitor capacity by monitoring the charging time of a capacitor and effectively improve the stability of a server.
The technical scheme provided by the invention is as follows:
a method of confirming capacitance capacity degradation by constant current, comprising:
establishing a constant current source, and charging a capacitor to be confirmed in a server power supply circuit;
monitoring the charging voltage establishment time of the constant current source to the capacitor to be confirmed through a logic chip, and setting the establishment time as a first time threshold;
setting a second time threshold according to the first time threshold, wherein the second time threshold is smaller than the first time threshold;
and monitoring the re-establishment time of the charging voltage when the server power supply circuit is started each time through a logic chip, and comparing the re-establishment time with the first time threshold and the second time threshold to judge whether the capacity of the capacitor is degraded or not.
Preferably, the charging voltage establishment time of the capacitor is the charging time of the capacitor to be confirmed.
Preferably, the charging voltage establishing time of the capacitor is a starting timing sequence control time of the first power module.
Preferably, the Power Good signal and the Enable signal of the server Power supply circuit are respectively connected with the logic chip; the Enable signal is an Enable signal of the first Power supply module, and the Power Good signal is a normal output signal of the first Power supply module.
Preferably, the ratio of the second time threshold to the first time threshold is 0.6-0.8.
Preferably, the determining process of capacitance capacity fading is as follows:
comparing the charging voltage re-establishment time to the first time threshold and the second time threshold, respectively;
if the re-establishment time of the charging voltage is less than the first time threshold and greater than the second time threshold, judging that the capacitor to be confirmed has a decline phenomenon, but can be continuously used;
and if the re-establishment time of the charging voltage is less than a second time threshold, judging that the capacitor to be confirmed has a decline phenomenon and/or a fault, and sending an alarm to inform a user.
An apparatus for confirming capacitance degradation by a constant current, comprising:
the timing sequence monitoring module is connected with the logic chip, monitors the charging voltage establishment time of the constant current source for supplying power to the capacitor to be confirmed through the logic chip, and sets the establishment time as a first time threshold;
a comparison setting module, configured to set a second time threshold according to the first time threshold, where the second time threshold is smaller than the first time threshold;
and monitoring the re-establishment time of the charging voltage when the server power supply circuit is started each time through a logic chip, comparing the re-establishment time with the first time threshold and the second time threshold, and judging whether the capacity of the capacitor is degraded or not.
Preferably, the mobile terminal further comprises an alarm module which is connected with the comparison setting module and can send out an alarm to inform a user.
A computer-readable medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method.
An electronic device comprising a memory, a processor for implementing the above method steps when executing a computer management like program stored in the memory.
The method for confirming the capacitance capacity decline through the constant current can effectively predict the decline condition of the capacitance capacity by monitoring the charging time of the capacitor, and effectively improves the stability of the server.
The method for monitoring the capacitance capacity decline provided by the invention can monitor whether the capacitance capacity has the decline phenomenon or not through the method when the server system runs for a long time, thereby greatly increasing the stability and the reliability of the product, and saving the labor and time for finding out the problem when the fault occurs.
The method for confirming the capacity decline of the capacitor through the constant current provided by the invention establishes the time constant from the Enable signal to the Powergood signal through the constant current to the charging voltage of the output capacitor, and the time constant is set and monitored through the CPLD, so that the capacity state of the capacitor of the server can be confirmed when the system runs, and the capacity decline phenomenon can be immediately found if the capacity decline phenomenon exists.
Drawings
Fig. 1 is a flowchart of a method for monitoring capacitance degradation according to the present invention.
Fig. 2 is a circuit diagram of the constant current source charging the output capacitor according to the present invention.
Fig. 3 is a timing chart corresponding to the time for establishing the charging voltage of the capacitor to be verified by the constant current source according to the present invention.
Fig. 4 is a timing diagram corresponding to the second time threshold according to the present invention.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. 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.
It should be noted that in the description of the present invention, the terms "in", "upper", "lower", "lateral", "inner", etc. indicate directions or positional relationships based on those shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1, based on the technical problem of the background art, the present invention provides a method for confirming capacitance degradation by constant current, comprising the following steps:
step S110, establishing a constant current source, and charging a capacitor to be confirmed in a power circuit of the server; monitoring the charging voltage establishment time of the constant current source to-be-confirmed capacitor through a logic chip, and setting the establishment time as the first timeA time threshold value alpha1＝|T1-T2|；
The charging voltage establishing time of the capacitor is the charging time of the capacitor to be confirmed or the charging voltage establishing time of the capacitor is the starting time sequence control time of the first power supply module, and the first battery module is any power supply module contained in the power supply circuit. T1 is the time for the current source to charge to assert the Enable signal; t2 is the time that the current source charges to assert the PowerGood signal.
As shown in fig. 2, in another embodiment, a constant current source circuit includes: the constant current power supply supplies power to a capacitor through an OUT port of the adjustable current circuit, wherein the constant current power supply outputs constant current, the constant current power supply is divided into two current sources through MOS switches Q2 and Q1 through a point A to supply power to the capacitor F in a constant current mode, MOS switches Q2 and Q1 can respectively control the on-off of the two current sources to adjust the current, preferably, the MOS switch Q2 is connected with a divider resistor R2 in series, the MOS switch Q1 is connected with a divider resistor R1 in series, and the current can be achieved by changing the resistance values of the divider resistor R2 and the divider resistor R1.
The server Power supply circuit comprises a plurality of Power supply modules, the Power supply modules are started through time sequence signals in a time sequence control chip, the output voltage of the server Power supply circuit is influenced by the starting time of the Power supply modules, each Power supply module is started by an Enable signal when being started, the voltage gradually rises in the starting process, when the server Power supply is completely started, a Power Good signal is sent out, the time sequence control chip is connected with the Power Good signal and the Enable signal of the Power supply module, and the Power Good signal and the Enable signal of the server Power supply circuit are respectively connected with a logic chip; the Enable signal is an Enable signal of the first Power supply module, and the Power Good signal is a normal output signal of the first Power supply module.
Step S120, setting a second time threshold alpha according to the first time threshold2＝|T1-T3Wherein the second time threshold is less than the first time threshold; preferably, the ratio of the second time threshold to the first time threshold is 0.6-0.8, and in this embodiment, the second time threshold and the first time threshold are setThe ratio of the time threshold is set to 0.7.
As shown in fig. 3-4, in step S130, the logic chip monitors the charging voltage re-establishment time each time the server power circuit is started, and compares the charging voltage re-establishment time with the first time threshold and the second time threshold to determine whether the capacity of the capacitor is degraded. The judgment process of the capacitance capacity decline is as follows:
comparing the charging voltage re-establishment time with a first time threshold and the second time threshold, respectively;
if the re-establishment time of the charging voltage is less than the first time threshold and greater than the second time threshold, judging that the capacitor to be confirmed has a decline phenomenon, but can be continuously used;
and if the re-establishment time of the charging voltage is less than the second time threshold, judging that the capacitor to be confirmed has a decline phenomenon and/or a fault, and sending an alarm to inform a user.
In another embodiment, the capacitors are charged by the constant current, the charging time of the set of power capacitors is monitored, the voltage build-up time of the capacitor charging voltage through the constant current source is determined, and the time from the Enable signal T1 to the Powergood signal T2 is determined, e.g., the time constant from T1 to T2 is 1.
Setting the time constant as an initial value, and setting the time constant from the monitoring Enable signal to the Powergood signal to be 0.7, namely the time from T1 to T3, through the logic chip CPLD;
preferably, the time from T1 to T3 is set by the user, and the time from T1 to T2 is set as the time for normal charging through the capacitance of the constant current source, i.e., the time from T3 is determined by the user.
If the capacitance has a decline phenomenon, the capacitance will tend to decrease, and the decrease of the capacitance is shortened relative to the time for establishing the output capacitance voltage through the constant current source, so that a user can set the time of T1-T3 through the logic chip CPLD, so as to monitor whether the time for establishing the startup voltage is shortened from T1-T2 to T1-T3 every time.
If the time from the voltage setup time Enable signal to the Powergood signal is longer than the time T1-T3, the capacity of the capacitor is not degraded to the range accepted by the user, the server can continue to operate and monitor, but if the time from the voltage setup time Enable signal to the Powergood signal is shorter than the time T1-T3, the capacity of the capacitor is degraded, and the voltage setup time is shortened, an alarm signal is sent to inform the user that the capacity of the voltage output capacitor is degraded, so that the capacity degradation condition is eliminated.
In another embodiment, the present invention further provides an apparatus for confirming capacitance degradation by a constant current, including: the device comprises a time sequence monitoring module and a comparison setting module.
The time sequence monitoring module is connected with the logic chip and monitors the establishment time of the constant current source for the charging voltage of the capacitor to be confirmed, and the establishment time is set as a first time threshold value;
the comparison setting module is used for setting a second time threshold according to the first time threshold, wherein the second time threshold is smaller than the first time threshold;
and monitoring the re-establishment time of the charging voltage when the server power supply circuit is started each time through the logic chip, comparing the re-establishment time with the first time threshold and the second time threshold, and judging whether the capacity of the capacitor is degraded or not.
In another embodiment, the device further comprises an alarm module which is connected with the comparison setting module and can send out an alarm to inform a user.
A computer-readable medium, on which a computer program is stored which, when being executed by a processor, carries out any one of the methods of step 110-step 130.
An electronic device comprising a memory, a processor for implementing any of steps 110-130 when executing a computer management class program stored in the memory.
The method for confirming the capacitance capacity decline through the constant current can effectively predict the decline condition of the capacitance capacity by monitoring the charging time of the capacitor, and effectively improves the stability of the server.
The method for monitoring the capacitance capacity decline provided by the invention can monitor whether the capacitance capacity has the decline phenomenon or not through the method when the server system runs for a long time, thereby greatly increasing the stability and the reliability of the product, and saving the labor and time for finding out the problem when the fault occurs.
The method for confirming the capacity decline of the capacitor through the constant current provided by the invention establishes the time constant from the Enable signal to the Powergood signal through the constant current to the charging voltage of the output capacitor, and the time constant is set and monitored through the CPLD, so that the capacity state of the capacitor of the server can be confirmed when the system runs, and the capacity decline phenomenon can be immediately found if the capacity decline phenomenon exists.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A method for confirming capacitance degradation through constant current, comprising:
establishing a constant current source, and charging a capacitor to be confirmed in a server power supply circuit;
monitoring the charging voltage establishment time of the constant current source to the capacitor to be confirmed through a logic chip, and setting the establishment time as a first time threshold;
setting a second time threshold according to the first time threshold, wherein the second time threshold is smaller than the first time threshold;
and monitoring the re-establishment time of the charging voltage when the server power supply circuit is started each time through a logic chip, and comparing the re-establishment time with the first time threshold and the second time threshold to judge whether the capacity of the capacitor is degraded or not.
2. The method for confirming capacity degradation of a capacitor through constant current according to claim 1, wherein the charging voltage setup time of the capacitor is the charging time of the capacitor to be confirmed.
3. The method as claimed in claim 2, wherein the charging voltage setup time of the capacitor is a start-up timing control time of the first power module.
4. The method for confirming capacity degradation of a capacitor through a constant current according to claim 3, wherein a Power Good signal and an Enable signal of the server Power supply circuit are respectively connected to the logic chip; the Enable signal is an Enable signal of the first Power supply module, and the Power Good signal is a normal output signal of the first Power supply module.
5. The method for confirming capacitance capacity degradation through constant current according to claim 4, wherein the ratio of the second time threshold to the first time threshold is 0.6-0.8.
6. The method for confirming capacitance capacity degradation through constant current according to claim 5, wherein the capacitance capacity degradation is determined by:
comparing the charging voltage re-establishment time to the first time threshold and the second time threshold, respectively;
if the re-establishment time of the charging voltage is less than the first time threshold and greater than the second time threshold, judging that the capacitor to be confirmed has a decline phenomenon, but can be continuously used;
and if the re-establishment time of the charging voltage is less than a second time threshold, judging that the capacitor to be confirmed has a decline phenomenon and/or a fault, and sending an alarm to inform a user.
7. An apparatus for confirming capacitance degradation by a constant current, comprising:
the timing sequence monitoring module is connected with the logic chip, monitors the charging voltage establishment time of the constant current source for supplying power to the capacitor to be confirmed through the logic chip, and sets the establishment time as a first time threshold;
a comparison setting module, configured to set a second time threshold according to the first time threshold, where the second time threshold is smaller than the first time threshold;
and monitoring the re-establishment time of the charging voltage when the server power supply circuit is started each time through a logic chip, comparing the re-establishment time with the first time threshold and the second time threshold, and judging whether the capacity of the capacitor is degraded or not.
8. The apparatus for confirming capacitance degradation by constant current as claimed in claim 7, further comprising an alarm module connected to the comparison setting module for providing an alarm to inform a user.
9. A computer-readable medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 6.
10. An electronic device comprising a memory, a processor for implementing the method steps of any of claims 1-6 when executing a computer management class program stored in the memory.
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| CN202011182670.1A CN112462148A (en) | 2020-10-29 | 2020-10-29 | Method, device and equipment for confirming capacitance capacity decline through constant current |
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| CN202011182670.1A CN112462148A (en) | 2020-10-29 | 2020-10-29 | Method, device and equipment for confirming capacitance capacity decline through constant current |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113703561A (en) * | 2021-07-16 | 2021-11-26 | 苏州浪潮智能科技有限公司 | Control method and system of capacitor standby power unit and related components |
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2020
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