CN111239514B - Method and device for testing overvoltage protection function of server power supply - Google Patents
Method and device for testing overvoltage protection function of server power supply Download PDFInfo
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Abstract
The invention provides a method and a device for testing the overvoltage protection function of a server power supply, wherein the method comprises the following steps: s1: sending an instruction to lower the protection threshold of the OVP part; s2: and detecting whether overvoltage protection occurs. The device comprises: the adjusting module is used for sending an instruction to reduce the protection threshold value of the OVP part; and the monitoring module is used for detecting and feeding back whether overvoltage protection occurs or not. According to the scheme, the overvoltage protection function of the power module is detected, the test flow is simplified to the greatest extent, and the test efficiency is improved.
Description
Technical Field
The invention relates to the field of testing, in particular to a method and a device for testing the overvoltage protection function of a server power supply.
Background
Most of current server power supply schemes adopt a mode of introducing feedback and adaptively adjusting a control loop to realize a constant voltage output form of a power supply. When the overvoltage protection test of the output voltage is performed, a relatively high voltage is mainly applied to simulate the overvoltage condition of the output voltage at present, so as to test whether the OVP (overvoltage protection) function of the power module is normal or open a power supply shell, and a part of a circuit (a voltage feedback part) is temporarily changed to perform the test. These operating methods require, on the one hand, the preparation of professional equipment and, on the other hand, professional modifications, thus resulting in relatively complex and difficult operations.
Disclosure of Invention
The embodiment of the invention provides a method and a device for testing the overvoltage protection function of a server power supply, which are used for solving the problem of complex overvoltage protection test operation in the prior art and improving the test efficiency.
In order to solve the technical problem, the embodiment of the invention discloses the following technical scheme:
the invention provides a method for testing the overvoltage protection function of a server power supply, which comprises the following steps:
s1: multiplying a preset threshold value by an adjusting coefficient X smaller than 1, and calculating to obtain a modification threshold value;
s2: sending an instruction to adjust the protection threshold value of the OVP part to a modification threshold value;
s3: starting a server power supply, loading voltage, detecting whether overvoltage protection occurs, if so, outputting normal overvoltage protection, and turning to the step S4; if not, outputting an overvoltage protection exception;
s4: an instruction is sent to restore the protection threshold of the OVP portion to a predetermined threshold.
Further, the method further comprises the following steps:
s5: powering on a server power supply, restarting, detecting whether overvoltage protection occurs again, and outputting abnormal overvoltage protection if the overvoltage protection occurs; if not, the output overvoltage protection is normal.
Further, before step S1, the connection state of the power supply module needs to be confirmed.
Preferably, in step S1, the issued command needs to be compatible with the pmbusv1.2 specification.
Preferably, in step S1, the value of the adjustment coefficient X is: 0.9 ≦ X <1.
Furthermore, after the protection threshold is modified, the maximum value of the voltage threshold in other modules is inquired, the protection threshold is compared with the searched voltage threshold, and when the modified protection threshold is smaller than the searched voltage threshold, the modified protection threshold is adjusted to be larger than the searched voltage threshold.
The embodiment of the invention also provides a device for testing the overvoltage protection function of the server power supply, which comprises:
the adjusting module is used for issuing an instruction to adjust the protection threshold value into a modification threshold value;
and the monitoring module is used for detecting and feeding back whether overvoltage protection occurs or not.
Further, the device further comprises:
and the restoring module is used for restoring the threshold value modified by the adjusting module to the original value.
Further, the adjusting module comprises:
an acquisition unit configured to acquire a preset threshold;
a calculating unit, configured to multiply a predetermined threshold by an adjustment coefficient X to calculate a modification threshold, where a value of the adjustment coefficient X is: 0.9 ≦ X <1;
and the first adjusting unit is used for modifying the protection threshold value into a calculated value.
Further, the adjusting module further includes:
the searching unit is used for searching the numerical value with the maximum voltage threshold in other modules;
the comparison unit is used for comparing the numerical values output by the search unit and the calculation unit;
and the second adjusting unit is used for adjusting the protection threshold value to be larger than the searched voltage threshold value when the output value of the calculating unit is smaller than the output value of the searching unit.
The beneficial effects of the above technical scheme are that:
compared with the complex operation in the prior art, the method modifies the protection threshold value through the instruction, particularly adjusts the protection threshold value downwards through an adjustment coefficient of an interval between 0.9 and 1, so that the server power supply can perform overvoltage protection on the modified protection threshold value under normal working voltage, OVP protection is confirmed to occur through the output of the power supply module, the indication condition of the indicator lamp, the alert signal condition and the condition of reading the power supply module by the upper computer, the whole implementation process is completely realized through software control, the test flow is simplified to the greatest extent while the overvoltage protection function of the power supply module is detected, and the test efficiency is improved.
In addition, when the protection threshold is adjusted, the influence of the adjusted protection threshold on other modules can be considered, and the modified protection threshold can be prevented from triggering the overvoltage protection function of other modules by searching and comparing the maximum voltage threshold of other modules, so that the accurate implementation of the voltage protection test is ensured, and the test error is reduced.
In addition to the test process, the test result can be rechecked in the normal overvoltage protection test, generally, the power supply which returns the protection threshold is electrified and started again, so that the power supply module is in a normal state after the protection threshold is restored, the problem of randomness of the measurement result under the condition of single measurement is avoided, and the accuracy and the stability of the test are further improved.
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In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for a person skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a flow chart of a method provided by one embodiment of the present invention;
fig. 2 is a schematic diagram of device functional logic according to an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. 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, as an embodiment that can be realized by the present invention, there is provided a method for testing a server power supply overvoltage protection function, the method including the following implementation procedures:
1) Confirming a connection state of the power module, the process comprising: the power supply module is electrified to ensure that the physical communication link between the upper computer and the module is well connected and the module outputs normally; the data is read by the upper computer, so that the power module is ensured to be in a normal state.
The definition of the normal state mainly refers to whether overvoltage protection occurs, and the state without overvoltage protection is the normal state.
2) Sending an instruction to reduce the protection threshold of the OVP part, wherein the issued command can be properly adjusted according to different items in the process, and the principle is to be compatible with the PMBusV1.2 standard, namely, the command defined by the PMBus standard is not occupied, and the command conforms to the read-write operation standard and meets the transmission operation of data reading and writing.
The requirements for reduction in this process are: firstly, acquiring a preset threshold value; then, multiplying the preset threshold by an adjustment coefficient X, wherein the value of the adjustment coefficient X is as follows: 0.9 ≦ X <1; and finally, modifying the protection threshold value into a calculated value.
It should be noted that although the range of the adjustment coefficient is set to 0.9 ≦ X <1, in practical operation, a fixed coefficient value may be preset, and generally, the value is greater than 0.95, and preferably, three values, i.e., 0.97, 0.98, and 0.99, are selected.
In order to ensure that the OVP logic of the power supply can be triggered without causing false triggering of other protection logics, the adjusted protection threshold needs to be checked, and the main principle is as follows: and after the protection threshold is modified, inquiring the maximum value of the voltage threshold in other modules, comparing the protection threshold with the searched voltage threshold, and when the modified protection threshold is smaller than the searched voltage threshold, adjusting the modified protection threshold to be larger than the searched voltage threshold.
In the above checking process, for the protection threshold that needs to be readjusted, a general adjustment manner is to multiply a coefficient, such as 1.1 or 1.2, by the searched voltage threshold, and then determine whether the value is smaller than the preset protection threshold, and when the recalculated protection threshold is still larger than the preset protection threshold, the multiplied coefficient may be reduced to a value such as 1.05.
4) Whether overvoltage protection occurs or not is detected, a server power supply needs to be started in the process, voltage is loaded, and then OVP protection is confirmed to occur through the output of a power supply module, the indication condition of an indicator lamp, the alert signal condition and the condition that an upper computer reads the state of the power supply module. If no overvoltage protection occurs, the power supply circuit has problems, and detailed maintenance operation needs to be carried out on the power supply module.
5) And sending an instruction to recover the protection threshold value of the OVP part, wherein the process recovers the OVP protection threshold value to an initial value through a command.
The above process has substantially completed the detection of the overvoltage protection, but in order to further confirm the condition of the power module, the detection result of the above process needs to be reviewed, and the review process is implemented by the following subsequent steps:
6) And detecting whether overvoltage protection occurs again, wherein power failure and power re-up are needed in the process, then detecting whether the power module is in a normal state, if the power module is in the normal state, the power module has no problem, the overvoltage protection function is normal, and if overvoltage protection still occurs, the circuit of the power module is in a fault, and further maintenance is needed.
Corresponding to the method, an embodiment of the present invention further provides a device for testing an overvoltage protection function of a server power supply, and referring to fig. 2, the device includes an adjustment module, a monitoring module, and a recovery module.
The adjusting module is used for issuing an instruction to reduce the protection threshold of the OVP part, and in order to realize the function, the adjusting module adopts a plurality of units to realize specific operation, and the included units and the functions thereof are specifically as follows:
first, an obtaining unit is used to obtain a preset threshold.
After the preset threshold value is obtained, the calculation unit multiplies the preset threshold value by the adjustment coefficient X to obtain an adjusted threshold value. Wherein, the value of the adjusting coefficient X is as follows: 0.9 ≦ X <1, preferably 0.97, 0.98 and 0.99.
And for the calculated value, the first adjusting unit is responsible for modifying the protection threshold value into the calculated value.
In order to prevent other modules from triggering overvoltage protection, the modified value needs to be checked, and the following units are adopted to realize the following steps:
and inquiring the value with the maximum voltage threshold value in other modules by utilizing a searching unit, then comparing the values output by the searching unit and the calculating unit by utilizing a comparing unit based on the obtained value, and adjusting the protection threshold value to be larger than the searched voltage threshold value when the value output by the calculating unit is smaller than the value output by the searching unit.
For the protection threshold that needs to be readjusted, a general adjustment manner is to multiply a coefficient, such as 1.1 or 1.2, by the searched voltage threshold, and then determine whether the value is smaller than the preset protection threshold, and when the recalculated protection threshold is still larger than the preset protection threshold, the multiplied coefficient may be reduced to a value such as 1.05.
After the adjustment is completed, whether overvoltage protection occurs or not can be detected and fed back by using the monitoring module, and in the detection process, OVP protection is confirmed to occur through the output of the power supply module, the indicating condition of the indicating lamp, the alert signal condition and the condition that the upper computer reads the state of the power supply module.
Although the detection of the overvoltage protection is substantially completed after the detection is completed, in order to further confirm the condition of the power module, the detection result needs to be reviewed, so that the threshold modified by the adjusting module is restored to the original value by using the restoring module, and then the detection of the overvoltage protection is performed by using the detecting module again.
It should be noted that the power module needs to be powered up again before the detection module is used again to detect.
The process of testing the PEF750-12-054NA power module by combining the above principle is as follows:
aiming at a PEF750-12-054NA power module, the normal output voltage is 12V, the corresponding protection threshold value is modified to 11.76V by issuing a command (CMD =0x 4D), the value is not found to be checked by the voltage threshold values of other modules, the test finds that the OVP function of the power module can be started as expected (the power output Latch, SMB _ Alert signal is pulled low, and the communication state word shows that the power supply outputs an overvoltage state), and after the test is finished, the command is issued to recover the corresponding protection threshold value.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice 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 (6)
1. A method for testing power over-voltage protection of a server, the method comprising:
s1: multiplying the preset threshold value by an adjusting coefficient X smaller than 1 to calculate a modification threshold value;
s2: sending an instruction to adjust the protection threshold value of the OVP part to a modification threshold value;
after the protection threshold is modified, inquiring the maximum value of the voltage threshold in other modules, comparing the protection threshold with the searched voltage threshold, and when the modified protection threshold is smaller than the searched voltage threshold, adjusting the modified protection threshold to be larger than the searched voltage threshold;
s3: starting a server power supply, loading voltage, detecting whether overvoltage protection occurs, if so, outputting normal overvoltage protection, and turning to the step S4; if not, outputting an overvoltage protection exception;
s4: an instruction is sent to restore the protection threshold of the OVP portion to a predetermined threshold.
2. The method of claim 1, further comprising:
s5: powering on a server power supply, restarting, detecting whether overvoltage protection occurs again, and outputting abnormal overvoltage protection if the overvoltage protection occurs; if not, the output overvoltage protection is normal.
3. The method for testing the overvoltage protection function of the power supply of the server according to the claim 1 or the claim 2, wherein the connection state of the power supply module is confirmed before the step S1.
4. The method for testing the overvoltage protection function of the power supply of the server according to the claim 1, wherein in the step S1, the issued command is compatible with the pmbusv1.2 specification.
5. The method for testing the overvoltage protection function of the power supply of the server according to claim 1, wherein in the step S1, the value of the adjustment coefficient X is as follows: 0.9 ≦ X <1.
6. An apparatus for testing power over-voltage protection of a server, the apparatus comprising:
the adjusting module is used for issuing an instruction to adjust the protection threshold value into a modification threshold value;
the monitoring module is used for detecting and feeding back whether overvoltage protection occurs or not;
the restoring module is used for restoring the threshold value modified by the adjusting module to the original value;
the adjusting module comprises:
an acquisition unit configured to acquire a preset threshold;
a calculating unit, configured to multiply a predetermined threshold by an adjustment coefficient X to calculate a modification threshold, where a value of the adjustment coefficient X is: 0.9 ≦ X <1;
a first adjusting unit, configured to modify the protection threshold to a calculated value;
the searching unit is used for searching the numerical value with the maximum voltage threshold in other modules;
the comparison unit is used for comparing the numerical values output by the search unit and the calculation unit;
and the second adjusting unit is used for adjusting the protection threshold value to be larger than the searched voltage threshold value when the output value of the calculating unit is smaller than the output value of the searching unit.
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| CN114089156B (en) * | 2021-10-29 | 2023-11-03 | 广东电网有限责任公司广州供电局 | Method and device for testing effectiveness of overvoltage protection function of power module hardware |
| CN114636852B (en) * | 2022-03-17 | 2024-01-09 | 苏州浪潮智能科技有限公司 | Overcurrent test method and device for server, server and readable storage medium |
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| CN101964512A (en) * | 2010-11-05 | 2011-02-02 | 江苏省电力公司东台市供电公司 | Electric leakage protector with overvoltage protective device |
| CN103823460A (en) * | 2014-02-17 | 2014-05-28 | 株洲南车时代电气股份有限公司 | Test apparatus and test method of auxiliary converter control cabinet |
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| DE102011052689B4 (en) * | 2011-08-12 | 2016-09-01 | Phoenix Contact Gmbh & Co. Kg | Gas-filled surge arrester with indirect monitoring of a short-circuit spring |
| US9030225B2 (en) * | 2013-05-02 | 2015-05-12 | Chicony Power Technology Co., Ltd. | Over voltage protection testing apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964512A (en) * | 2010-11-05 | 2011-02-02 | 江苏省电力公司东台市供电公司 | Electric leakage protector with overvoltage protective device |
| CN103823460A (en) * | 2014-02-17 | 2014-05-28 | 株洲南车时代电气股份有限公司 | Test apparatus and test method of auxiliary converter control cabinet |
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