CN114441845A - Voltage drift monitoring method and device - Google Patents
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Abstract
The invention provides a voltage drift monitoring method and a device, wherein the method comprises the following steps: inputting the voltage data of the target power supply acquired in real time into a drift analysis model to obtain a drift analysis result output by the drift analysis model; the drift analysis model is obtained based on selection of an average mode of historical voltage data and analysis or detection of drift influence factors; the drift analysis model is used for carrying out voltage drift analysis based on the drift limit value obtained by analyzing or detecting and extracting the drift influence factors. According to the invention, the obtained voltage data of the target power supply is subjected to drift analysis through the drift analysis model, so that the voltage data of the target power supply can be monitored in real time conveniently, the failure coverage rate is improved, and high-level function safety is realized; and a drift analysis result is obtained through the drift model, so that the situation of voltage drift is solved by taking corresponding measures according to the drift analysis result in time, and the safety and the reliability are improved.
Description
Technical Field
The invention relates to the technical field of circuits, in particular to a voltage drift monitoring method and device.
Background
As functional security becomes more and more important, more and more security mechanisms are employed in various fields. Whether the safety standard of the electric/electronic/programmable electronic safety related system is according to IEC61508 or ISO26262 road vehicle safety standard, the safety mechanism of the power supply mainly includes three types: safety mechanisms for over-voltage and under-voltage failure modes, safety mechanisms for drift and oscillation failure modes, and safety mechanisms for power spike failure modes.
At present, most common safety mechanisms aim at overvoltage and undervoltage safety mechanisms, and two common methods are generally used, namely, performing analog-to-digital conversion on voltage, setting overvoltage and undervoltage limit values in a processor, and monitoring whether the voltage exceeds an extreme value range in real time; the self-carrying overvoltage and undervoltage detection capability of a power supply chip is utilized, and a low level or a high level is output through a state indicating pipe (generally called PG or PGOOD) for indicating whether the power supply voltage is in danger, overvoltage or undervoltage; another is by targeted involving the fact that safety mechanisms against drift, oscillation and power spurs are implemented.
For the first mode, since the failure modes causing drift, oscillation and power source spurs cannot be covered and the coverage rate is low, when the coverage rate of the safety mechanism is claimed, only low coverage rate can be claimed, and the residual failure rate of the power source corresponding to the low coverage rate is high, thereby being not beneficial to high functional safety level; in the second method, since it can only control the failure modes such as drift and oscillation, safety mechanism of power source spike, etc., and the occurrence of failure cannot be monitored, and double-point failure may occur once the safety mechanism fails, when the hidden failure coverage rate is asserted, the hidden failure coverage rate cannot be asserted, which is not good for higher functional safety level.
Disclosure of Invention
The invention provides a voltage drift monitoring method and a voltage drift monitoring device, which are used for solving the defect of low coverage rate caused by failure modes such as drift, oscillation, power supply spurt and the like in the prior art, achieving high failure coverage rate and realizing high-level functional safety.
The invention provides a voltage drift monitoring method, which comprises the following steps: inputting voltage data of a target power supply acquired in real time into a drift analysis model to obtain a drift analysis result output by the drift analysis model; the drift analysis model is obtained based on selection of an average mode of historical voltage data and analysis or detection of drift influence factors; the drift analysis model is used for analyzing the voltage drift based on the analysis of the drift influence factors of the voltage data of the target power supply acquired in real time or the drift limit value obtained by detection and extraction.
According to the voltage drift monitoring method provided by the invention, the drift analysis model comprises the following steps: a limit value acquisition layer for analyzing or detecting the drift influence factors to obtain a drift limit value; a voltage acquisition layer for acquiring an average voltage based on the voltage characteristics; and the drift analysis layer is used for comparing the average voltage with a drift limit value to obtain a drift analysis result.
According to the voltage drift monitoring method provided by the invention, the obtaining of the drift limit value comprises the following steps: the drift influence factor includes at least one of a temperature coefficient, a load current coefficient, an input voltage coefficient, a time coefficient, and a margin coefficient, and a drift limit value is obtained based on the drift influence factor.
According to the voltage drift monitoring method provided by the invention, the drift limit value comprises a drift upper limit value and a drift lower limit value, wherein:
the drift upper limit value is expressed as:
xLimit-H＝xNominal×(1+|KT|)×(1+|KV|)×(1+|KLoad|)×(1+|KHour|)×(1+|KMargin|)
the drift lower limit value is expressed as:
xLimit-L＝xNominal×(1-|KT|)×(1-|KV|)×(1-|KLoad|)×(1-|KHour|)×(1-|KMargin|)
wherein x isLimit-HDenotes the upper limit of drift, xNominalTheoretical value, K, corresponding to voltage data without driftTDenotes the temperature coefficient, KVRepresenting the input voltage coefficient, KLoadRepresenting the load current coefficient, KHourDenotes the time coefficient, KMarginThe residue coefficient is represented.
According to the voltage drift monitoring method provided by the invention, before the voltage data of the target power supply acquired in advance is input into the drift analysis model, the method further comprises the following steps: acquiring a target power supply voltage of a target power supply based on a voltage transfer circuit; and performing digital conversion on the target power supply voltage based on an analog-digital converter to obtain voltage data.
According to the voltage drift monitoring method provided by the invention, after the voltage data is obtained, the method comprises the following steps: storing the voltage data into a register.
According to the voltage drift monitoring method provided by the invention, after obtaining the drift analysis result output by the drift analysis model, the method further comprises the following steps: obtaining a drift state indication according to the drift analysis result; and adopting corresponding control measures based on the drift state indication.
According to the voltage drift monitoring method provided by the invention, the corresponding control measures are adopted based on the drift state indication, and the method comprises the following steps: and controlling measures based on the drift state indication display drift exceeding.
The present invention also provides a voltage drift monitoring device, comprising: the controller inputs pre-acquired voltage data into a drift analysis model to obtain a drift analysis result output by the drift analysis model; the drift analysis model is obtained based on selection of an average mode of historical voltage data and analysis or detection of drift influence factors; the drift analysis model is used for carrying out voltage drift analysis based on the drift limit value obtained by analyzing or detecting and extracting the drift influence factors.
According to the voltage drift monitoring device provided by the invention, the controller further comprises an analog-digital converter and a register, wherein: the analog-digital converter receives a target power supply voltage transmitted by the voltage transmission circuit based on the target power supply and performs digital conversion on the target power supply voltage to obtain voltage data; the register receives and stores the voltage data obtained by the analog-digital converter; and the drift analysis model is used for acquiring the voltage data from the register and carrying out drift analysis on the voltage data to obtain a drift analysis result.
According to the voltage drift monitoring device provided by the invention, the voltage drift monitoring device further comprises an analog-digital converter, the controller further comprises a register, wherein: the analog-digital converter receives a target power supply voltage transmitted by the voltage transmission circuit based on the target power supply and performs digital conversion on the target power supply voltage to obtain voltage data; the register receives and stores the voltage data obtained by the analog-digital converter; and the drift analysis model is used for acquiring the voltage data from the register and carrying out drift analysis on the voltage data to obtain a drift analysis result.
The present invention also provides an electronic device, comprising a memory, a processor and a computer program stored on the memory and operable on the processor, wherein the processor implements the steps of any of the voltage drift monitoring methods described above when executing the program.
The invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the voltage drift monitoring method as described in any of the above.
The invention also provides a computer program product comprising a computer program which, when executed by a processor, carries out the steps of the voltage drift monitoring method as described in any one of the above.
According to the voltage drift monitoring method and device, the obtained voltage data of the target power supply are subjected to drift analysis through the drift analysis model, so that the voltage data of the target power supply can be monitored in real time conveniently, the failure coverage rate is improved, and high-level function safety is realized; and a drift analysis result is obtained through the drift model, so that the situation of voltage drift is solved by taking corresponding measures according to the drift analysis result in time, and the safety and the reliability are improved.
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In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic flow chart of a voltage drift monitoring method provided by the present invention;
FIG. 2 is a schematic diagram of a voltage drift monitoring apparatus according to the present invention;
FIG. 3 is a schematic diagram of an architecture of a voltage drift monitoring apparatus according to the present invention;
FIG. 4 is a second schematic diagram of the voltage drift monitoring apparatus according to the present invention;
fig. 5 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 shows a schematic flow chart of a voltage drift monitoring method according to the present invention, which includes:
inputting the pre-acquired voltage data of the target power supply into a drift analysis model to obtain a drift analysis result output by the drift analysis model;
the drift analysis model is obtained based on selection of an average mode of historical voltage data and analysis or detection of drift influence factors;
the drift analysis model is used for analyzing the voltage drift based on the analysis of the drift influence factors of the voltage data of the target power supply acquired in real time or the drift limit value obtained by detection and extraction.
The voltage drift monitoring method of the present invention is described in detail below.
In this embodiment, the drift analysis model includes: a limit value acquisition layer for analyzing or detecting the drift influence factors to obtain a drift limit value; a voltage acquisition layer for acquiring an average voltage based on the voltage characteristics; and the drift analysis layer is used for comparing the average voltage with a drift limit value acquired in advance to obtain a drift analysis result.
Specifically, first, the limit acquisition layer analyzes or detects the drift-affecting factor to obtain the drift limit.
In this embodiment, obtaining the drift limit includes: the drift influencing factor comprises at least one of a temperature coefficient, a load current coefficient, an input voltage coefficient, a time coefficient and a margin coefficient, and the drift limit value is obtained based on the drift influencing factor. In an alternative embodiment, the drift-affecting factor further includes hardware circuit errors, analog-to-digital conversion errors, and the like. Before the average voltage is compared with the preset drift limit value, the influence of factors such as hardware circuit errors, analog-to-digital conversion errors, temperature, time, voltage, load current and the like on the voltage drift is comprehensively considered by using the limit value acquisition layer, and after a proper margin is given, the drift limit value is set, so that the accuracy and the reliability of a drift analysis result are improved.
Specifically, the drift limit includes an upper drift limit and a lower drift limit, wherein:
the drift upper limit, expressed as:
xLimit-H＝xNominal×(1+|KT|)×(1+|KV|)×(1+|KLoad|)×(1+|KHour|)×(1+|KMargin|)
the lower drift limit, expressed as:
xLimit-L＝xNominal×(1-|KT|)×(1-|KV|)×(1-|KLoad|)×(1-|KHour|)×(1-|KMargin|)
wherein x isLimit-HDenotes the upper limit of drift, xNominalTheoretical value, K, corresponding to voltage data without driftTDenotes the temperature coefficient, KVRepresenting the input voltage coefficient, KLoadRepresenting the load current coefficient, KHourRepresenting a time coefficient, related to the total operating time of the power supply, KMarginRepresenting a margin coefficient, defined in terms of tolerance to drift.
More specifically, the temperature coefficient is expressed as:
wherein, KTRepresenting the temperature coefficient, T representing the real-time temperature, TREFShowing a referenceTemperature, VOUTRepresenting the value of the output voltage.
Voltage coefficient, expressed as:
wherein, KVRepresenting the voltage coefficient, VINRepresenting the value of the input voltage, VOUTRepresenting the value of the output voltage.
Load flow coefficient, expressed as:
wherein, KLoadRepresenting the current coefficient of the load electrical output voltage value, ILoadRepresenting the load current, VOUTRepresenting the value of the output voltage.
And secondly, the voltage acquisition layer acquires an average voltage based on the voltage characteristics. It should be noted that, average calculation methods such as arithmetic average, weighted average, etc. may be used to perform average calculation on the voltage characteristics, and the specific average calculation method may be determined according to actual design requirements, which is not further limited herein. In addition, when the voltage acquisition layer obtains the average voltage based on the voltage characteristics, the average voltage may be obtained based on all or part of the voltage characteristics, and may be specifically determined according to actual design requirements, which is not further limited herein.
And finally, the drift analysis layer compares the average voltage with a drift limit value acquired in advance to obtain a drift analysis result. In this embodiment, the average voltage is compared with a drift limit value obtained in advance, and if the average voltage exceeds the drift limit value, a drift analysis result is displayed as a voltage drift; otherwise, the drift analysis result shows that the voltage is normal. The voltage drift is a phenomenon in which the voltage of the target power supply changes with time or temperature and deviates from a nominal value.
In an optional embodiment, before inputting the pre-acquired voltage data of the target power supply into the drift analysis model, the method further includes: transmitting the voltage analog signal of the target power supply voltage of the obtained target power supply based on the voltage transmission circuit; and based on the analog-digital converter, performing digital conversion on the voltage analog signal of the target power supply voltage to obtain voltage data. The voltage data in the form of digital signals can be obtained by digitally converting the target power supply voltage, so that the drift analysis model can be sampled conveniently. Further, after obtaining the voltage data, the method includes: the voltage data is stored in a register.
In an optional embodiment, after obtaining the drift analysis result output by the drift analysis model, the method further includes: obtaining a drift state indication according to the drift analysis result; and adopting corresponding control measures based on the indication of the drift state.
Specifically, first, a drift status indication is obtained from the drift analysis result. In this embodiment, obtaining the indication of the drift status according to the result of the drift analysis includes: displaying the voltage drift according to the drift analysis result, and displaying the drift state indication as drift exceeding; and displaying that the voltage is normal according to the drift analysis result, and indicating that the drift is normal by the drift state.
Secondly, based on the indication of the drift state, corresponding control measures are adopted. In this embodiment, based on the indication of the drift state, corresponding control measures are taken, which include: and if the display drift exceeds the indication based on the drift state, taking control measures. In addition, when the drift status indicates that the display drift is normal, no control measures are taken. It is noted that the control measure includes at least one of an enter-safe-state measure and a function degradation control measure. The function degradation means reducing or canceling functions or performance, and the safety state control measures generally include measures such as shutdown, shielded output, manual takeover, standby system takeover and the like, and the function degradation control measures generally include measures such as reducing speed, reducing action range and stopping partial functions.
In summary, in the embodiment of the present invention, the obtained voltage data of the target power supply is subjected to the drift analysis by the drift analysis model, so that the voltage data of the target power supply is conveniently monitored in real time, the failure coverage rate is improved, and the high-level functional safety is realized; and a drift analysis result is obtained through the drift model, so that the situation of voltage drift is solved by taking corresponding measures according to the drift analysis result in time, and the safety and the reliability are improved.
The voltage drift monitoring device provided by the present invention is described below, and the voltage drift monitoring device described below and the voltage drift monitoring method described above may be referred to in correspondence.
Fig. 2 shows a schematic structural diagram of a voltage drift monitoring device, which comprises:
the controller 21 is used for inputting the pre-acquired voltage data into the drift analysis model to obtain a drift analysis result output by the drift analysis model; the drift analysis model is obtained based on selection of an average mode of historical voltage data and analysis or detection of drift influence factors; the drift analysis model is used for carrying out voltage drift analysis based on the drift limit value obtained by analyzing or detecting and extracting the drift influence factors.
In a possible implementation, with reference to fig. 3, the controller 21 further comprises an analog-to-digital converter 31 and a register 32, wherein: an analog-to-digital converter 31 that receives a target power supply voltage transmitted by the voltage transmission circuit based on the target power supply and performs digital conversion on the target power supply voltage to obtain voltage data; a register 32 that receives and stores voltage data obtained by the analog-digital converter 31; the drift analysis model 33 obtains the voltage data from the register 32, and performs drift analysis on the voltage data to obtain a drift analysis result.
In another possible implementation, referring to fig. 4, the voltage drift monitoring apparatus further includes an analog-to-digital converter 41, and the controller further includes a register 42, wherein: an analog-to-digital converter 41 that receives a target power supply voltage transmitted by the voltage transmission circuit based on the target power supply and performs digital conversion on the target power supply voltage to obtain voltage data; a register 42 for receiving and storing voltage data obtained by the analog-digital converter; the drift analysis model 43 obtains the voltage data from the register 42, and performs drift analysis on the voltage data to obtain a drift analysis result.
In this embodiment, the drift analysis model includes: the limit value acquisition unit is used for analyzing or detecting the drift influence factors to obtain a drift limit value; a voltage acquisition unit which obtains an average voltage based on the voltage characteristics; and the drift analysis unit is used for comparing the average voltage with a drift limit value acquired in advance to obtain a drift analysis result.
In an optional embodiment, the drift influencing factor includes at least one of a temperature coefficient, a load current coefficient, an input voltage coefficient, a time coefficient, and a margin coefficient, and the limit value obtaining unit obtains the drift limit value based on the drift influencing factor. In an alternative embodiment, the drift-affecting factor further includes hardware circuit errors, analog-to-digital conversion errors, and the like. Before the average voltage is compared with the preset drift limit value, the influence of factors such as hardware circuit errors, analog-to-digital conversion errors, temperature, time, voltage, load current and the like on the voltage drift is comprehensively considered by using the limit value acquisition unit, and after a proper margin is given, the drift limit value is set, so that the accuracy and the reliability of a drift analysis result are improved.
In this embodiment, the drift analysis unit includes: the comparison subunit compares the average voltage with a pre-acquired drift limit value, and if the average voltage exceeds the drift limit value, a drift analysis result is displayed as voltage drift; otherwise, the drift analysis result shows that the voltage is normal. The voltage drift is a phenomenon in which the voltage of the target power supply changes with time or temperature and deviates from a nominal value.
In an optional embodiment, the apparatus further comprises: and the data acquisition module is used for acquiring voltage data. Specifically, the data acquisition module comprises: the voltage acquisition unit is used for transmitting the voltage analog signal of the acquired target power supply voltage of the target power supply based on the voltage transmission circuit; and the digital conversion unit is used for carrying out digital conversion on the voltage analog signal of the target power supply voltage based on the analog-digital converter to obtain voltage data. The voltage data in the form of digital signals can be obtained by digitally converting the target power supply voltage, so that the drift analysis model can be sampled conveniently. More specifically, the data acquisition module further includes: and a data storage unit for storing the voltage data into the register.
In an optional embodiment, the apparatus further comprises: the indication confirmation module is used for obtaining a drift state indication according to the drift analysis result; and the measure control module adopts corresponding control measures based on the drift state indication. Specifically, if the drift analysis result shows that the voltage drifts, the indication confirming module is instructed to confirm that the drift state indication shows that the drift exceeds, and if the drift analysis result shows that the voltage is normal, the indication confirming module is instructed to confirm that the drift state indication shows that the drift is normal. Similarly, if the drift state indicates that the display drift exceeds, the measure control module takes control measures; and if the drift state indicates that the drift is normal, the measure control module does not take control measures. It is noted that the control measure includes at least one of an enter-safe-state measure and a function degradation control measure. The function degradation means reducing or canceling functions or performance, and the safety state control measures generally include measures such as shutdown, shielded output, manual takeover, standby system takeover and the like, and the function degradation control measures generally include measures such as reducing speed, reducing action range and stopping partial functions.
Fig. 5 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 5: a processor (processor)51, a communication Interface (communication Interface)52, a memory (memory)53 and a communication bus 54, wherein the processor 51, the communication Interface 52 and the memory 53 complete communication with each other through the communication bus 54. The processor 51 may invoke logic instructions in the memory 53 to perform a voltage drift monitoring method comprising: inputting the pre-acquired voltage data of the target power supply into a drift analysis model to obtain a drift analysis result output by the drift analysis model; the drift analysis model is obtained based on selection of an average mode of historical voltage data and analysis or detection of drift influence factors; the drift analysis model is used for analyzing the voltage drift based on the analysis of the drift influence factors of the voltage data of the target power supply acquired in real time or the drift limit value obtained by detection and extraction.
In addition, the logic instructions in the memory 53 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product, the computer program product comprising a computer program, the computer program being storable on a non-transitory computer-readable storage medium, the computer program, when executed by a processor, being capable of executing the voltage drift monitoring method provided by the above methods, the method comprising: inputting the pre-acquired voltage data of the target power supply into a drift analysis model to obtain a drift analysis result output by the drift analysis model; the drift analysis model is obtained based on selection of an average mode of historical voltage data and analysis or detection of drift influence factors; the drift analysis model is used for analyzing the voltage drift based on the analysis of the drift influence factors of the voltage data of the target power supply acquired in real time or the drift limit value obtained by detection and extraction.
In yet another aspect, the present invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program, which when executed by a processor, implements a method for voltage drift monitoring provided by the above methods, the method comprising: inputting the pre-acquired voltage data of the target power supply into a drift analysis model to obtain a drift analysis result output by the drift analysis model; the drift analysis model is obtained based on selection of an average mode of historical voltage data and analysis or detection of drift influence factors; the drift analysis model is used for analyzing the voltage drift based on the analysis of the drift influence factors of the voltage data of the target power supply acquired in real time or the drift limit value obtained by detection and extraction.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (14)
1. A method of voltage drift monitoring, comprising:
inputting voltage data of a target power supply acquired in real time into a drift analysis model to obtain a drift analysis result output by the drift analysis model;
the drift analysis model is obtained based on selection of an average mode of historical voltage data and analysis or detection of drift influence factors;
the drift analysis model is used for analyzing the voltage drift based on the analysis of the drift influence factors of the voltage data of the target power supply acquired in real time or the drift limit value obtained by detection and extraction.
2. The voltage drift monitoring method of claim 1, wherein the drift analysis model comprises:
a limit value acquisition layer for analyzing or detecting the drift influence factors to obtain a drift limit value;
a voltage acquisition layer for acquiring an average voltage based on the voltage characteristics;
and the drift analysis layer is used for comparing the average voltage with a drift limit value to obtain a drift analysis result.
3. The method of claim 2, wherein said deriving a drift limit comprises:
the drift influence factor includes at least one of a temperature coefficient, a load current coefficient, an input voltage coefficient, a time coefficient, and a margin coefficient, and a drift limit value is obtained based on the drift influence factor.
4. The voltage drift monitoring method of claim 2, wherein the drift limits comprise an upper drift limit and a lower drift limit, wherein:
the drift upper limit value is expressed as:
xLimit-H＝xNominal×(1+|KT|)×(1+|KV|)×(1+|KLoad|)×(1+|KHour|)×(1+|KMargin|)
the drift lower limit value is expressed as:
xLimit＝xNomin×(1-|KT|)×(1-|KV|)×(1-|KLoad|)×(1-|KHour|)×(1-|KMargin|)
wherein x isLimit-HDenotes the upper limit of drift, xLimit-LDenotes the lower limit of drift, xNominalTheoretical value, K, corresponding to voltage data without driftTDenotes the temperature coefficient, KVRepresenting the input voltage coefficient, KLoadRepresenting the load current coefficient, KHourDenotes the time coefficient, KMarginThe residue coefficient is represented.
5. The voltage drift monitoring method according to claim 1, wherein before inputting the voltage data of the target power source acquired in real time into the drift analysis model, the method further comprises:
acquiring a target power supply voltage of a target power supply based on a voltage transfer circuit;
and performing digital conversion on the target power supply voltage based on an analog-digital converter to obtain voltage data.
6. The method of claim 5, wherein after said obtaining voltage data, comprising: storing the voltage data into a register.
7. The method of claim 1, further comprising, after obtaining the drift analysis result output by the drift analysis model:
obtaining a drift state indication according to the drift analysis result;
and adopting corresponding control measures based on the drift state indication.
8. The method of claim 7, wherein the employing a corresponding control measure based on the indication of the drift status comprises:
and controlling measures based on the drift state indication display drift exceeding.
9. A voltage drift monitoring apparatus, comprising:
the controller inputs pre-acquired voltage data into a drift analysis model to obtain a drift analysis result output by the drift analysis model; the drift analysis model is obtained based on selection of an average mode of historical voltage data and analysis or detection of drift influence factors; the drift analysis model is used for carrying out voltage drift analysis based on the drift limit value obtained by analyzing or detecting and extracting the drift influence factors.
10. The voltage drift monitoring device of claim 9, wherein the controller further comprises an analog-to-digital converter and a register, wherein:
the analog-digital converter receives a target power supply voltage transmitted by the voltage transmission circuit based on the target power supply and performs digital conversion on the target power supply voltage to obtain voltage data;
the register receives and stores the voltage data obtained by the analog-digital converter;
and the drift analysis model is used for acquiring the voltage data from the register and carrying out drift analysis on the voltage data to obtain a drift analysis result.
11. The voltage drift monitoring apparatus of claim 9, further comprising an analog-to-digital converter, the controller further comprising a register, wherein:
the analog-digital converter receives a target power supply voltage transmitted by the voltage transmission circuit based on the target power supply and performs digital conversion on the target power supply voltage to obtain voltage data;
the register receives and stores the voltage data obtained by the analog-digital converter;
and the drift analysis model is used for acquiring the voltage data from the register and carrying out drift analysis on the voltage data to obtain a drift analysis result.
12. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the voltage drift monitoring method according to any of claims 1 to 8 are implemented when the program is executed by the processor.
13. A non-transitory computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the voltage drift monitoring method according to any one of claims 1 to 8.
14. A computer program product comprising a computer program, characterized in that the computer program realizes the steps of the voltage drift monitoring method according to any one of claims 1 to 8 when executed by a processor.
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