CN117388749B - Power module detection method and detection system - Google Patents
Power module detection method and detection system Download PDFInfo
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- CN117388749B CN117388749B CN202311711317.1A CN202311711317A CN117388749B CN 117388749 B CN117388749 B CN 117388749B CN 202311711317 A CN202311711317 A CN 202311711317A CN 117388749 B CN117388749 B CN 117388749B
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- 238000001514 detection method Methods 0.000 title claims abstract description 25
- 230000002159 abnormal effect Effects 0.000 claims description 70
- 238000012795 verification Methods 0.000 claims description 63
- 238000000034 method Methods 0.000 claims description 37
- 230000005856 abnormality Effects 0.000 claims description 33
- 238000011084 recovery Methods 0.000 claims description 9
- 238000011156 evaluation Methods 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
Abstract
The invention relates to the technical field of power module detection, and discloses a power module detection method and a detection system.
Description
Technical Field
The invention relates to the technical field of power module detection, in particular to a power module detection method and a power module detection system.
Background
The power module is a power supply which can be directly mounted on a printed circuit board and is characterized in that the power supply can provide power for an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a microprocessor, a memory, a Field Programmable Gate Array (FPGA) and other digital or analog loads.
The patent application number CN202310838358.0 discloses a power module detection method and a detection device, wherein the power module detection method comprises the following steps: setting input voltage and input current and sending the input voltage and the input current to a power module to be tested; controlling the power module to be tested to work, and obtaining an output vector generated by the power module to be tested; obtaining output voltage and output current according to the output vector; calculating output efficiency, load adjustment rate and power supply adjustment rate according to the output voltage, output current, input voltage and input current; judging whether the function of the power module to be tested is normal or not according to the output vector and/or the output efficiency and/or the load adjustment rate and/or the power adjustment rate, and sending the output vector to a test system for display.
In the prior art, the operation state of the power module in use cannot be effectively evaluated, and the power module cannot be timely warned due to failure in use caused by lack of evaluation on the use trend and the abnormal grade of the power module based on the operation state of the power module, so that the power module has larger limitation.
Disclosure of Invention
The invention aims to provide a power module detection method and a detection system, wherein the use state data of a power module are obtained, namely, the power module energy ratio, the power module output voltage amplitude ratio and the power module temperature-pressure rate ratio are obtained when the power module is in operation, namely, the larger the power module energy ratio is, the lower the energy loss of the power module is in operation, the larger the obtained use state value of the power module is, the smaller the power module output voltage amplitude ratio is, the higher the voltage output precision of the power module is, the larger the obtained use state value of the power module is, the smaller the power module temperature-pressure rate ratio is, the better the power module temperature drift performance is, the larger the obtained use state value of the power module is, and the use state value of the power module is characterized by the use state value of the power module through the processing of the power module energy ratio, the power module output voltage amplitude ratio and the power module temperature-pressure rate ratio.
The aim of the invention can be achieved by the following technical scheme:
a power module detection method comprises the following steps:
step one: acquiring the use state data of the power supply module, and obtaining the use state value of the power supply module through the use state data of the power supply module;
step two: comparing the use state value of the power supply module with a preset use state value threshold value of the power supply module to obtain an operation state signal of the power supply module;
the running state signals of the power supply module comprise a power supply module running stable signal and a power supply module running verification signal;
step three: based on the power module running stability signal, evaluating the running trend of the power module;
step four: based on the power module operation verification signal, obtaining verification data of the power module, and identifying the operation state of the power module based on the verification data;
the verification data comprises a power module out-of-limit time ratio, a power module voltage abnormality ratio and a power module temperature adjustment ratio;
marking the out-of-limit time ratio of the power supply module as Xt;
marking the voltage abnormality ratio of the power supply module as Xv;
marking the temperature adjustment ratio of the power supply module as Xw;
i.e. by the formulaCalculating to obtain a power module operation verification value XZ, wherein ++>Is a preset proportionality coefficient, and->；
Comparing the power module operation verification value with the limit value of the power module operation verification value to obtain the abnormal operation level of the power module;
the power module operation abnormality level comprises a first-level abnormality of power module operation, a second-level abnormality of power module operation and a third-level abnormality of power module operation.
As a further scheme of the invention: the using state data of the power supply module comprises a power supply module energy ratio, a power supply module output voltage amplitude ratio and a power supply module temperature-pressure rate ratio;
marking the energy ratio of the power supply module as Dn;
the amplitude ratio of the output voltage of the power supply module is recorded as Df;
the temperature-pressure rate ratio of the power supply module is recorded as Dw;
i.e. by the formulaCalculating to obtain a use state value DZ of the power supply module; wherein a1, a2 and a3 are preset proportionality coefficients;
comparing the use state value DZ of the power supply module with the use state value threshold value DZ of the power supply module;
if the use state value DZ of the power supply module is more than or equal to the use state value threshold value DZ of the power supply module, the power supply module is indicated to run stably, and a signal for stabilizing the operation of the power supply module is obtained;
if the use state value DZ of the power supply module is smaller than the use state value threshold value DZ of the power supply module, the power supply module is abnormal in operation, and an operation verification signal of the power supply module is obtained.
As a further scheme of the invention: the energy ratio of the power supply module is obtained by the following steps:
acquiring input electric energy of a power supply module;
obtaining output electric energy of a power supply module;
and calculating the ratio of the output electric energy of the power supply module to the input electric energy of the power supply module to obtain the energy ratio of the power supply module.
As a further scheme of the invention: the power module output voltage amplitude ratio obtaining process is as follows:
obtaining the maximum output voltage of the output end of the power supply module within the rated temperature operation range, and recording the maximum output voltage of the output end of the power supply module as the actual output voltage of the output end of the power supply module;
calculating the difference value between the actual output voltage of the output end of the power supply module and the nominal output voltage of the power supply module to obtain an output voltage deviation value of the power supply module;
and calculating the ratio of the power supply module output voltage deviation value to the power supply module nominal output voltage to obtain the power supply module output voltage amplitude ratio.
As a further scheme of the invention: the temperature-pressure rate ratio of the power supply module is obtained by the following steps:
acquiring an initial temperature value of the power module in operation and a maximum temperature value of the power module in operation;
calculating the difference between the maximum temperature value in the running process of the power supply module and the initial temperature value in the running process of the power supply module to obtain the running temperature change difference value of the power supply module;
acquiring a moment corresponding to an initial temperature value when the power supply module operates, and recording the moment as an initial moment to acquire an initial voltage value of the power supply module at the initial moment;
acquiring a time corresponding to a maximum temperature value in the running process of the power supply module, marking the time as a termination time, and acquiring a termination voltage value of the power supply module at the termination time;
calculating the difference between the termination voltage value of the power supply module and the initial voltage value of the power supply module to obtain the running voltage variation difference value of the power supply module;
and calculating the ratio of the operating voltage variation difference value of the power supply module to the operating temperature variation difference value of the power supply module to obtain the temperature-pressure rate ratio of the power supply module.
As a further scheme of the invention: the power module out-of-limit time ratio acquisition process comprises the following steps:
obtaining an efficiency value of a power supply module;
if the obtained power module efficiency value is out of the range of the power module preset efficiency value, and the duration that the power module efficiency value does not fall into the power module preset efficiency value exceeds the preset duration, marking the preset duration as an efficiency abnormal period;
acquiring the times of all the efficiency abnormal time periods in the process from the beginning operation to the ending operation of the power supply module, and calculating the ratio of the times of the efficiency abnormal time periods to the total operation duration of the power supply module to obtain the efficiency abnormal frequency of the power supply module;
summing the time lengths of all the abnormal efficiency time periods of the power supply module in the process from the beginning to the ending of the operation of the power supply module to obtain the total abnormal time length of the power supply module;
calculating the ratio of the abnormal total duration of the power supply module to the running total duration of the power supply module to obtain the efficiency abnormal time ratio of the power supply module;
and performing product operation on the efficiency abnormal frequency of the power supply module and the efficiency abnormal time ratio of the power supply module to obtain the power supply module out-of-limit time ratio.
As a further scheme of the invention: the acquisition process of the voltage abnormality ratio of the power supply module comprises the following steps:
acquiring a power module output voltage value in the process from starting operation to ending operation of a power module;
the state that the output voltage value of the power supply module does not fall into the range of the preset output voltage value and the duration exceeds the preset duration is recorded as a voltage abnormal state;
acquiring the total times of voltage abnormal states;
and calculating the ratio of the total times of the voltage abnormal state to the total operation duration of the power supply module to obtain the voltage abnormal ratio of the power supply module.
As a further scheme of the invention: the acquisition process of the temperature adjustment ratio of the power supply module comprises the following steps:
acquiring the real-time temperature of the power supply module during operation;
acquiring the times that the running real-time temperature of the power supply module exceeds the running rated temperature range of the power supply module;
calculating the difference value between the single callback time and the initial time to obtain the single temperature recovery time of the power supply module;
summing the temperature recovery time when the running real-time temperature of all the power supply modules exceeds the rated temperature range of the power supply modules to obtain the total temperature recovery time of the power supply modules;
recording the times that the running real-time temperature of all the power supply modules exceeds the rated temperature range of the power supply modules, and obtaining the total times of temperature callback;
and calculating the ratio of the total temperature callback time of the power supply module to the total temperature callback times to obtain the temperature adjustment ratio of the power supply module.
As a further scheme of the invention: step three, based on the power module running stability signal, acquiring the use state values of the power module according to the period, acquiring the use state values of the power module of m periods, generating a power module use state value trend graph in a plane coordinate system for the use state values of the power module of m periods, and identifying the line type of the power module use state value trend graph;
the operation trend of the power supply module comprises that the use state of the power supply module gradually changes to good in m periods, the use state of the power supply module gradually becomes worse in m periods and the use state of the power supply module is in a dynamic constant state in m periods.
As another preferred embodiment of the present invention: a power module detection system, comprising:
the state acquisition module is used for acquiring the use state data of the power supply module and obtaining the use state value of the power supply module through the use state data of the power supply module;
uploading the use state value of the power supply module to a cloud management and control platform;
the signal decision module is used for acquiring a use state value of the power supply module transmitted by the cloud management and control platform, comparing the use state value of the power supply module with a preset use state value threshold value of the power supply module, and obtaining an operation state signal of the power supply module;
the running state signals of the power supply module comprise a power supply module running stable signal and a power supply module running verification signal;
uploading the power module operation stable signal and the power module operation verification signal to a cloud management and control platform;
the trend evaluation module receives the power module operation stability signal transmitted by the cloud control platform and evaluates the operation trend of the power module based on the power module operation stability signal;
and the level verification module is used for receiving the power module operation verification signal transmitted by the cloud management and control platform, acquiring verification data of the power module based on the power module operation verification signal, and identifying the operation state of the power module based on the verification data.
The invention has the beneficial effects that:
according to the invention, the use state data of the power supply module is obtained, namely, the energy ratio of the power supply module, the output voltage amplitude ratio of the power supply module and the temperature-pressure rate ratio of the power supply module are obtained when the power supply module is in operation, namely, the larger the energy ratio of the power supply module is, the lower the energy loss of the power supply module is, the larger the use state value of the obtained power supply module is, the smaller the output voltage amplitude ratio of the power supply module is, the higher the voltage output precision of the power supply module is, the larger the use state value of the obtained power supply module is, the smaller the temperature-pressure rate ratio of the power supply module is, the better the temperature drift performance of the power supply module is, the larger the use state value of the power supply module is obtained through the processing of the energy ratio of the power supply module, the output voltage amplitude ratio of the power supply module and the temperature-pressure rate ratio of the power supply module, the use state value of the power supply module is represented through the use state value of the power supply module, and the reliability is strong and the accuracy is high;
when the power supply module is abnormal in operation, the verification data of the power supply module are obtained, namely, the efficiency of the abnormal power supply module in use is represented through the power supply module out-of-limit time ratio, the power supply module voltage abnormality ratio and the power supply module temperature adjustment ratio, the voltage overvoltage duration of the abnormal power supply module in use is represented through the power supply module voltage abnormality ratio, the heat dissipation efficiency temperature change of the abnormal power supply module in use is represented through the power supply module temperature adjustment ratio, so that the operation verification value of the power supply module is obtained, the abnormality degree of the power supply module is obtained based on the operation verification value of the power supply module and the treatment of the verification threshold, namely, the abnormality grade of the power supply module is obtained, and visual management of a manager on the power supply module in the operation process is realized;
when the power supply module operates normally, the invention acquires the use state values of the power supply module according to the period, acquires the use state values of the power supply module in a plurality of periods, generates a power supply module use state value trend chart in a plane coordinate system for the use state values of the power supply module in a plurality of periods, identifies the line type of the power supply module use state value trend chart, and obtains the use state of the power supply module in a plurality of periods.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a flowchart of a power module detection method according to an embodiment of the present invention;
FIG. 2 is a flowchart of a power module operation trend in a power module detection method according to an embodiment of the present invention;
fig. 3 is a flowchart of a power module detection system according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1, the present invention is a power module detection method, comprising the following steps:
step one: acquiring the use state data of the power supply module, and obtaining the use state value of the power supply module through the use state data of the power supply module;
step two: comparing the use state value of the power supply module with a preset use state value threshold value of the power supply module to obtain an operation state signal of the power supply module;
the running state signals of the power supply module comprise a power supply module running stable signal and a power supply module running verification signal;
step three: based on the power module running stability signal, evaluating the running trend of the power module;
step four: based on the power module operation verification signal, obtaining verification data of the power module, and identifying the operation state of the power module based on the verification data.
In the first step, the use state data of the power supply module comprises the energy ratio of the power supply module, the output voltage amplitude ratio of the power supply module and the temperature-pressure rate ratio of the power supply module;
wherein:
the energy ratio of the power supply module is obtained by the following steps:
the input end of the power supply module and the output end of the power supply module are respectively provided with a voltage sensor and a current sensor;
acquiring input current of the power module through a current sensor at the input end of the power module, acquiring input voltage of the power module through a voltage sensor at the input end of the power module, multiplying the input current and the input voltage at the input end of the power module, and calculating to obtain input power of the power module;
integrating the input power of the power supply module with the running time of the power supply module to obtain the input electric energy of the power supply module;
obtaining output current of the power module through a current sensor at the output end of the power module, obtaining output voltage of the power module through a voltage sensor at the output end of the power module, multiplying the output current and the output voltage at the output end of the power module, and calculating to obtain output power of the power module;
integrating the output power of the power supply module with the running time of the power supply module to obtain the output electric energy of the power supply module;
calculating the ratio of the output electric energy of the power supply module to the input electric energy of the power supply module to obtain the energy ratio of the power supply module;
the power module output voltage amplitude ratio obtaining process is as follows:
obtaining the maximum output voltage of the output end of the power supply module in the rated temperature operation range of the power supply module through a voltage sensor at the output end of the power supply module, and recording the maximum output voltage of the output end of the power supply module as the actual output voltage of the output end of the power supply module;
the rated temperature of the power supply module is preset according to different brands, models and application environments;
calculating the difference value between the actual output voltage of the output end of the power supply module and the nominal output voltage of the power supply module to obtain an output voltage deviation value of the power supply module;
calculating the ratio of the power module output voltage deviation value to the power module nominal output voltage to obtain the power module output voltage amplitude ratio;
the temperature-pressure rate ratio of the power supply module is obtained by the following steps:
setting a temperature sensor on the power module, and acquiring an initial temperature value of the power module during operation and a maximum temperature value of the power module during operation through the temperature sensor;
calculating the difference between the maximum temperature value in the running process of the power supply module and the initial temperature value in the running process of the power supply module to obtain the running temperature change difference value of the power supply module;
acquiring a moment corresponding to an initial temperature value when the power supply module operates, and recording the moment as an initial moment to acquire an initial voltage value of the power supply module at the initial moment;
acquiring a time corresponding to a maximum temperature value in the running process of the power supply module, marking the time as a termination time, and acquiring a termination voltage value of the power supply module at the termination time;
calculating the difference between the termination voltage value of the power supply module and the initial voltage value of the power supply module to obtain the running voltage variation difference value of the power supply module;
calculating the ratio of the operating voltage variation difference value of the power supply module to the operating temperature variation difference value of the power supply module to obtain the temperature-pressure rate ratio of the power supply module;
marking the energy ratio of the power supply module as Dn;
the amplitude ratio of the output voltage of the power supply module is recorded as Df;
the temperature-pressure rate ratio of the power supply module is recorded as Dw;
i.e. by the formulaCalculating to obtain a use state value DZ of the power supply module; wherein a1, a2 and a3 are preset proportionality coefficients.
Step two, presetting a use state value threshold value of the power supply module as DZ, and comparing the use state value DZ of the power supply module with the use state value threshold value DZ of the power supply module;
if the use state value DZ of the power supply module is more than or equal to the use state value threshold value DZ of the power supply module, the power supply module is indicated to run stably, and a signal for stabilizing the operation of the power supply module is obtained;
if the use state value DZ of the power supply module is smaller than the use state value threshold value DZ of the power supply module, the power supply module is abnormal in operation, and an operation verification signal of the power supply module is obtained.
Example 2
Step three, acquiring a use state value of the power module according to the period, and acquiring the use state value of the power module corresponding to the middle moment of each period;
in the embodiment, the period of m power supply modules is acquired in an interval type acquisition mode, namely in a mode of 10n-1, n is the acquisition times, and n is 1,2,3.
Establishing an X-Y two-dimensional plane coordinate system, taking the cycle number of the power supply module as an X axis and taking the use state value of the power supply module as a Y axis;
setting the using state value periods of the m power supply modules in time sequence on an X axis, drawing points in a coordinate system by taking the using state values of the power supply modules as Y values, and smoothly connecting the points in the coordinate system in time sequence to obtain a using state value trend graph of the power supply modules in the m periods;
identifying a power module use state value trend graph in m periods, which specifically comprises the following steps:
if the whole power module using state value trend graph in m periods is in an upward inclined line type, the power module using state gradually becomes good in m periods, and the power module using state integrally develops in a good direction;
if the whole power module using state value trend graph in m periods is in a downward inclined line type, the power module using state gradually becomes worse in m periods, and the whole power module using state develops in a poor direction;
if the whole trend graph of the using state value of the power supply module in m periods is in a fluctuating line type, the using state of the power supply module in m periods is in a dynamic constant state;
in this embodiment, the period includes, but is not limited to, 1 day, 3 days, 7 days, or 10 days.
In a specific embodiment, based on the overall development of the power module use condition in a poor direction, presetting a power module use state critical value, and taking the power module use state critical value as a constant value to make a critical line parallel to an X axis in an X-Y two-dimensional plane coordinate system;
acquiring a time period when the power module use state value trend graph is intersected with a critical line, marking the time period as a critical period, and acquiring a power module use state value corresponding to the critical period;
calculating the difference value between the critical period power supply module use state value and the initial period power supply module use state value to obtain a power supply module use state trend difference value;
acquiring the interval time between a critical period and an initial period, and recording the interval time as trend difference time;
calculating the ratio of the trend difference value of the power supply module use state to the trend difference value time to obtain the state change rate of the power supply module;
then, calculating the difference value between the use state value of the critical period power supply module and the use state value threshold value of the power supply module to obtain a limited value of the use state of the power supply module;
calculating the ratio of the limited value of the using state of the power supply module to the state change rate of the power supply module to obtain the limited using time of the power supply module;
based on the limited use time of the power module, the abnormal time point of the power module is evaluated, the effective use time of the power module can be accurately controlled, and the whole equipment operation faults caused by abnormal use of the power module are prevented.
Example 3
In the fourth step, the verification data comprise the power module out-of-limit time ratio, the power module voltage abnormality ratio and the power module temperature adjustment ratio;
the power module out-of-limit time ratio acquisition process comprises the following steps:
acquiring the input power of the power supply module and the output power of the power supply module, and calculating the ratio of the input power of the power supply module to the output power of the power supply module to obtain the efficiency value of the power supply module;
if the obtained power module efficiency value is out of the range of the power module preset efficiency value, and the duration that the power module efficiency value does not fall into the power module preset efficiency value exceeds the preset duration, marking the preset duration as an efficiency abnormal period;
acquiring the times of all the efficiency abnormal time periods in the process from the beginning operation to the ending operation of the power supply module, and calculating the ratio of the times of the efficiency abnormal time periods to the total operation duration of the power supply module to obtain the efficiency abnormal frequency of the power supply module;
summing the time lengths of all the abnormal efficiency time periods of the power supply module in the process from the beginning operation to the ending operation of the power supply module to obtain the total abnormal time length of the power supply module, and calculating the ratio of the total abnormal time length of the power supply module to the total operation time length of the power supply module to obtain the abnormal efficiency time ratio of the power supply module;
performing product operation on the efficiency abnormal frequency of the power supply module and the efficiency abnormal time ratio of the power supply module to obtain an out-of-limit time ratio of the power supply module;
the acquisition process of the voltage abnormality ratio of the power supply module comprises the following steps:
acquiring a power module output voltage value in the process from starting operation to ending operation of a power module;
recording the duration time that the output voltage value of the power supply module does not fall within the preset output voltage value range each time;
the state that the output voltage value of the power supply module does not fall into the range of the preset output voltage value and the duration exceeds the preset duration is recorded as a voltage abnormal state;
acquiring the total times of voltage abnormal states;
calculating the ratio of the total times of the voltage abnormal state to the total operation duration of the power supply module to obtain the voltage abnormal ratio of the power supply module;
the acquisition process of the temperature adjustment ratio of the power supply module comprises the following steps:
acquiring the real-time temperature of the power module during operation, and comparing the real-time temperature of the power module with the rated temperature range of the power module during operation;
acquiring the times that the running real-time temperature of the power supply module exceeds the running rated temperature range of the power supply module, recording the initial time that the running real-time temperature of the power supply module exceeds the running rated temperature range of the power supply module each time, and recording the callback time that the running real-time temperature of the power supply module is callback to the running rated temperature range of the power supply module;
calculating the difference value between the single callback time and the initial time to obtain the single temperature recovery time of the power supply module;
summing the temperature recovery time when the running real-time temperature of all the power supply modules exceeds the rated temperature range of the power supply modules to obtain the total temperature recovery time of the power supply modules;
recording the times that the running real-time temperature of all the power supply modules exceeds the rated temperature range of the power supply modules, and obtaining the total times of temperature callback;
calculating the ratio of the total temperature callback time of the power supply module to the total temperature callback times to obtain the temperature adjustment ratio of the power supply module;
marking the out-of-limit time ratio of the power supply module as Xt;
marking the voltage abnormality ratio of the power supply module as Xv;
marking the temperature adjustment ratio of the power supply module as Xw;
i.e. by the formulaCalculating to obtain a power module operation verification value XZ, wherein,is a preset proportionality coefficient, and->；
The limit value of the operation verification value of the preset power supply module is XZ1 and XZ2, wherein XZ1 is less than XZ2:
when XZ is less than XZ1, the power module operates first-level abnormality to obtain a first-level abnormality signal;
when XZ1 is less than XZ2, the power module operates the secondary abnormality to obtain a secondary abnormality signal;
when XZ is larger than XZ2, the power module operates three-level abnormality to obtain three-level abnormality signals;
the degree of abnormality of the three-level abnormal signal is higher than that of the two-level abnormal signal, and the degree of abnormality of the two-level abnormal signal is higher than that of the one-level abnormal signal;
the higher the abnormal degree of the power supply module is, the higher the emergency degree of the power supply module fault is, specifically, the lower the efficiency of the power supply module in use is, the overvoltage time of the power supply module in use is long, the temperature of the power supply module in use is low in heat dissipation, and visual management of management staff on the power supply module in the running process is realized through acquiring the abnormal grade of the power supply module.
Wherein, the limit value of the operation verification value of the power supply module is XZ1 and XZ2 which are an experience value, and the limit value is obtained according to experience;
in the actual obtaining process, a plurality of groups of power module operation verification values XZ are provided, a worker identifies the abnormal grade corresponding to the power module according to the plurality of groups of power module operation verification values XZ, so that the corresponding relation between the power module operation verification values and the abnormal grade of the power module is obtained, the limit values of the obtained power module operation verification values according to the abnormal grade are XZ1 and XZ2, and the identification of the abnormal degree of the power module is completed through the comparison of the limit values of the power module operation verification values.
Example 4
Referring to fig. 2, the present invention is a power module detection system, including a state acquisition module, a signal decision module, a trend evaluation module, a level verification module, and a cloud management and control platform;
the state acquisition module, the signal decision module, the trend evaluation module and the grade verification module are electrically connected with the cloud management and control platform;
the state acquisition module is used for acquiring the use state data of the power supply module, and obtaining the use state value of the power supply module through the use state data of the power supply module;
uploading the use state value of the power supply module to a cloud management and control platform;
the signal decision module acquires a use state value of the power supply module transmitted by the cloud management and control platform, compares the use state value of the power supply module with a preset use state value threshold value of the power supply module, and obtains an operation state signal of the power supply module;
the running state signals of the power supply module comprise a power supply module running stable signal and a power supply module running verification signal;
uploading the power module operation stable signal and the power module operation verification signal to a cloud management and control platform;
the trend evaluation module receives the power module operation stability signal transmitted by the cloud control platform, and evaluates the operation trend of the power module based on the power module operation stability signal;
the level verification module receives a power module operation verification signal transmitted by the cloud management and control platform, obtains verification data of the power module based on the power module operation verification signal, and identifies the operation state of the power module based on the verification data.
One of the core points of the present invention is: the method comprises the steps of obtaining the use state data of a power supply module, namely obtaining the energy ratio of the power supply module, the output voltage amplitude ratio of the power supply module and the temperature-pressure rate ratio of the power supply module when the power supply module is in operation, namely obtaining the use state value of the power supply module when the energy consumption of the power supply module is lower in operation through the fact that the energy consumption of the power supply module is larger, obtaining the use state value of the power supply module when the output voltage amplitude ratio of the power supply module is smaller, obtaining the use state value of the power supply module when the voltage output precision of the power supply module is higher, obtaining the use state value of the power supply module when the temperature drift performance of the power supply module is better, obtaining the use state value of the power supply module through the processing of the energy ratio of the power supply module, the output voltage amplitude ratio of the power supply module and the temperature-pressure rate ratio of the power supply module, and representing the use state of the power supply module through the use state value of the power supply module, and is high in reliability and high in accuracy;
one of the core points of the present invention is: when the power supply module is abnormal in operation, the verification data of the power supply module are obtained, namely, the efficiency of the abnormal power supply module in use is represented through the power supply module out-of-limit time ratio, the power supply module voltage abnormality ratio and the power supply module temperature adjustment ratio, the voltage overvoltage duration of the abnormal power supply module in use is represented through the power supply module voltage abnormality ratio, the heat dissipation efficiency temperature change of the abnormal power supply module in use is represented through the power supply module temperature adjustment ratio, so that the operation verification value of the power supply module is obtained, the abnormality degree of the power supply module is obtained based on the operation verification value of the power supply module and the treatment of the verification threshold, namely, the abnormality grade of the power supply module is obtained, and visual management of the power supply module in the operation process by management personnel is realized;
one of the core points of the present invention is: when the power supply module operates normally, the use state values of the power supply module are acquired according to the periods, the use state values of the power supply module in m periods are acquired, a power supply module use state value trend chart is generated in a plane coordinate system by the use state values of the power supply module in m periods, the line type of the power supply module use state value trend chart is identified, the use state of the power supply module in m periods is obtained, when the use state of the power supply module is gradually deteriorated, the abnormal time point of the power supply module is evaluated by the limited use time of the power supply module, the effective use time of the power supply module can be accurately controlled, and the whole equipment operation caused by the abnormal use of the power supply module is prevented.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (3)
1. The power module detection method is characterized by comprising the following steps of:
step one: acquiring the use state data of the power supply module, and obtaining the use state value of the power supply module through the use state data of the power supply module;
step two: comparing the use state value of the power supply module with a preset use state value threshold value of the power supply module to obtain an operation state signal of the power supply module;
the running state signals of the power supply module comprise a power supply module running stable signal and a power supply module running verification signal;
step three: based on the power module running stability signal, evaluating the running trend of the power module;
step four: based on the power module operation verification signal, obtaining verification data of the power module, and identifying the operation state of the power module based on the verification data;
the verification data comprises a power module out-of-limit time ratio, a power module voltage abnormality ratio and a power module temperature adjustment ratio;
marking the out-of-limit time ratio of the power supply module as Xt;
marking the voltage abnormality ratio of the power supply module as Xv;
marking the temperature adjustment ratio of the power supply module as Xw;
i.e. by the formulaCalculating to obtain a power module operation verification value XZ, wherein ++>Is a preset proportionality coefficient, and->；
Comparing the power module operation verification value with the limit value of the power module operation verification value to obtain the abnormal operation level of the power module;
the power supply module operation abnormality level comprises a first-level abnormality of power supply module operation, a second-level abnormality of power supply module operation and a third-level abnormality of power supply module operation;
the using state data of the power supply module comprises a power supply module energy ratio, a power supply module output voltage amplitude ratio and a power supply module temperature-pressure rate ratio;
marking the energy ratio of the power supply module as Dn;
the amplitude ratio of the output voltage of the power supply module is recorded as Df;
the temperature-pressure rate ratio of the power supply module is recorded as Dw;
i.e. by the formulaCalculating to obtain a use state value DZ of the power supply module; wherein a1, a2 and a3 are preset proportionality coefficients;
comparing the use state value DZ of the power supply module with the use state value threshold value DZ of the power supply module;
if the use state value DZ of the power supply module is more than or equal to the use state value threshold value DZ of the power supply module, the power supply module is indicated to run stably, and a signal for stabilizing the operation of the power supply module is obtained;
if the use state value DZ of the power supply module is smaller than the use state value threshold value DZ of the power supply module, the power supply module is indicated to be abnormal in operation, and an operation verification signal of the power supply module is obtained;
the energy ratio of the power supply module is obtained by the following steps:
acquiring input electric energy of a power supply module;
obtaining output electric energy of a power supply module;
calculating the ratio of the output electric energy of the power supply module to the input electric energy of the power supply module to obtain the energy ratio of the power supply module;
the power module output voltage amplitude ratio obtaining process is as follows:
obtaining the maximum output voltage of the output end of the power supply module within the rated temperature operation range, and recording the maximum output voltage of the output end of the power supply module as the actual output voltage of the output end of the power supply module;
calculating the difference value between the actual output voltage of the output end of the power supply module and the nominal output voltage of the power supply module to obtain an output voltage deviation value of the power supply module;
calculating the ratio of the power module output voltage deviation value to the power module nominal output voltage to obtain the power module output voltage amplitude ratio;
the temperature-pressure rate ratio of the power supply module is obtained by the following steps:
acquiring an initial temperature value of the power module in operation and a maximum temperature value of the power module in operation;
calculating the difference between the maximum temperature value in the running process of the power supply module and the initial temperature value in the running process of the power supply module to obtain the running temperature change difference value of the power supply module;
acquiring a moment corresponding to an initial temperature value when the power supply module operates, and recording the moment as an initial moment to acquire an initial voltage value of the power supply module at the initial moment;
acquiring a time corresponding to a maximum temperature value in the running process of the power supply module, marking the time as a termination time, and acquiring a termination voltage value of the power supply module at the termination time;
calculating the difference between the termination voltage value of the power supply module and the initial voltage value of the power supply module to obtain the running voltage variation difference value of the power supply module;
calculating the ratio of the operating voltage variation difference value of the power supply module to the operating temperature variation difference value of the power supply module to obtain the temperature-pressure rate ratio of the power supply module;
the power module out-of-limit time ratio acquisition process comprises the following steps:
obtaining an efficiency value of a power supply module;
if the obtained power module efficiency value is out of the range of the power module preset efficiency value, and the duration that the power module efficiency value does not fall into the power module preset efficiency value exceeds the preset duration, marking the preset duration as an efficiency abnormal period;
acquiring the times of all the efficiency abnormal time periods in the process from the beginning operation to the ending operation of the power supply module, and calculating the ratio of the times of the efficiency abnormal time periods to the total operation duration of the power supply module to obtain the efficiency abnormal frequency of the power supply module;
summing the time lengths of all the abnormal efficiency time periods of the power supply module in the process from the beginning to the ending of the operation of the power supply module to obtain the total abnormal time length of the power supply module;
calculating the ratio of the abnormal total duration of the power supply module to the running total duration of the power supply module to obtain the efficiency abnormal time ratio of the power supply module;
performing product operation on the efficiency abnormal frequency of the power supply module and the efficiency abnormal time ratio of the power supply module to obtain an out-of-limit time ratio of the power supply module;
the acquisition process of the voltage abnormality ratio of the power supply module comprises the following steps:
acquiring a power module output voltage value in the process from starting operation to ending operation of a power module;
the state that the output voltage value of the power supply module does not fall into the range of the preset output voltage value and the duration exceeds the preset duration is recorded as a voltage abnormal state;
acquiring the total times of voltage abnormal states;
calculating the ratio of the total times of the voltage abnormal state to the total operation duration of the power supply module to obtain the voltage abnormal ratio of the power supply module;
the acquisition process of the temperature adjustment ratio of the power supply module comprises the following steps:
acquiring the real-time temperature of the power supply module during operation;
acquiring the times that the running real-time temperature of the power supply module exceeds the running rated temperature range of the power supply module;
calculating the difference value between the single callback time and the initial time to obtain the single temperature recovery time of the power supply module;
summing the temperature recovery time when the running real-time temperature of all the power supply modules exceeds the rated temperature range of the power supply modules to obtain the total temperature recovery time of the power supply modules;
recording the times that the running real-time temperature of all the power supply modules exceeds the rated temperature range of the power supply modules, and obtaining the total times of temperature callback;
and calculating the ratio of the total temperature callback time of the power supply module to the total temperature callback times to obtain the temperature adjustment ratio of the power supply module.
2. The method for detecting a power module according to claim 1, wherein in the third step, based on a power module running stability signal, the use state values of the power module are obtained according to periods, the use state values of m periods of the power module are obtained, a power module use state value trend graph is generated in a plane coordinate system for the use state values of m periods of the power module, and the line type of the power module use state value trend graph is identified;
the operation trend of the power supply module comprises that the use state of the power supply module gradually changes to good in m periods, the use state of the power supply module gradually becomes worse in m periods and the use state of the power supply module is in a dynamic constant state in m periods.
3. A power module detection system for performing the method of any of the preceding claims 1-2, the detection system comprising:
the state acquisition module is used for acquiring the use state data of the power supply module and obtaining the use state value of the power supply module through the use state data of the power supply module;
uploading the use state value of the power supply module to a cloud management and control platform;
the signal decision module is used for acquiring a use state value of the power supply module transmitted by the cloud management and control platform, comparing the use state value of the power supply module with a preset use state value threshold value of the power supply module, and obtaining an operation state signal of the power supply module;
the running state signals of the power supply module comprise a power supply module running stable signal and a power supply module running verification signal;
uploading the power module operation stable signal and the power module operation verification signal to a cloud management and control platform;
the trend evaluation module receives the power module operation stability signal transmitted by the cloud control platform and evaluates the operation trend of the power module based on the power module operation stability signal;
and the level verification module is used for receiving the power module operation verification signal transmitted by the cloud management and control platform, acquiring verification data of the power module based on the power module operation verification signal, and identifying the operation state of the power module based on the verification data.
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