CN110824401A - Reliability monitoring method, system, equipment and storage medium of BBU (baseband unit) electricity meter - Google Patents
Reliability monitoring method, system, equipment and storage medium of BBU (baseband unit) electricity meter Download PDFInfo
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Abstract
The application discloses a reliability monitoring method of a BBU electricity meter, which comprises the following steps: the method comprises the steps of obtaining the state of charge (SOC) of a Battery Backup Unit (BBU) at the system starting time, and determining the initial charge amount of the BBU at the system starting time according to the SOC; after the system is started, determining a first accumulated charge amount accumulated along with time according to the current value acquired by the BBU electricity meter and the charge-discharge state of the BBU; and when the error between the sum of the initial charge amount and the first accumulated charge amount and the RCC measured by the BBU electricity meter exceeds a preset first error range at any time after the system is started, determining that the BBU electricity meter is not credible. By applying the scheme, the reliability of the BBU electricity meter can be effectively determined, so that the condition of user data loss is avoided. The application also discloses a reliability monitoring system, equipment and a storage medium of the BBU electricity meter, and the reliability monitoring system, the equipment and the storage medium have corresponding technical effects.
Description
Technical Field
The invention relates to the technical field of storage, in particular to a reliability monitoring method, a system, equipment and a storage medium for a BBU electricity meter.
Background
In the storage field, when the mains supply is powered off, a Battery Backup Unit (BBU) can be used for Backup power, so that the safety of data of the system after the power failure can be protected, and specifically, after the power failure of the system, the BBU can continuously supply power, so that various important data in the system can be safely stored.
The BBU electricity meter refers to a battery management chip, such as a commonly used TI BQ20Z45, disposed inside the BBU, for protecting the charging and discharging processes and measuring the RCC (Remaining Capacity) and FCC (Full Charge Capacity) of the BBU.
The system can periodically poll the RCC and FCC measured by the BBU electricity meter so as to judge whether the BBU has enough electricity to support the data dump process after power failure, if the electricity is not enough, the system service can be stopped, user data loss can be prevented, the BBU can be charged, and the service can be restarted after the electricity of the BBU is enough.
However, because of the reasons of reduced chemical activity of batteries, large-current discharge and the like, the BBU electricity meter may have a deviation in the evaluation of the RCC, which may cause a system to make a wrong judgment when judging whether the BBU has enough electricity to support the power backup process, and may cause user data loss if the power failure of the mains supply occurs when the power backup process of the BBU is not completed.
In summary, how to effectively determine the reliability of the BBU electricity meter so as to avoid the situation of user data loss is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a reliability monitoring method, a system, equipment and a storage medium of a BBU (baseband processing unit) electricity meter, so as to effectively determine the reliability of the BBU electricity meter and avoid the condition of user data loss.
In order to solve the technical problems, the invention provides the following technical scheme:
a reliability monitoring method of a BBU electricity meter comprises the following steps:
the method comprises the steps of obtaining the state of charge (SOC) of a Battery Backup Unit (BBU) at the system starting time, and determining the initial charge amount of the BBU at the system starting time according to the SOC;
after the system is started, determining a first accumulated charge amount accumulated along with time according to the current value acquired by the BBU electricity meter and the charge-discharge state of the BBU;
determining that the BBU electricity meter is not authentic when an error between a sum of the initial charge amount and the first accumulated charge amount and the RCC measured by the BBU electricity meter exceeds a preset first error range at any time after the system is started.
Preferably, after the system is started, the method further comprises:
when the BBU is detected to be in a discharging state, determining a second accumulated charge amount accumulated along with time according to the current value acquired by the BBU electricity meter, and clearing the second accumulated charge amount when the BBU is in a charging state;
and when the second accumulated charge amount reaches a preset first threshold value at any moment and the second accumulated charge amount reaches the first threshold value from 0, the RCC measured by the BBU electricity meter is not changed, and the BBU electricity meter is determined to be unreliable.
Preferably, the method further comprises the following steps:
when the BBU is determined to be in a full state at any time after the system is started, judging whether an error between the RCC measured by the BBU electricity meter and the FCC measured by the BBU electricity meter exceeds a preset second error range or not;
if so, determining that the BBU electricity meter is not authentic.
Preferably, the method further comprises the following steps:
and when the BBU is in a deep discharge state in the calibration process, multiplying the sum of the initial charge amount and the first accumulated charge amount by 2, and when the error between the product and the FCC measured by the BBU electricity meter exceeds a preset third error range, determining that the BBU electricity meter is not credible.
Preferably, the method further comprises the following steps:
and after the BBU electricity meter is determined to be not credible, evaluating the power-standby capacity of the BBU by using the sum of the initial charge amount and the first accumulated charge amount, and outputting prompt information.
Preferably, the BBU electricity meter acquires the current value according to a preset acquisition cycle;
correspondingly, the determining a first accumulated charge amount accumulated over time according to the current value collected by the BBU electricity meter and the charge-discharge state of the BBU includes:
multiplying each current value acquired by the BBU ammeter by cycle time, and determining a first accumulated charge amount accumulated along with time according to the rule that the current value is a positive value when the BBU is in a charging state and the current value is a negative value when the BBU is in a discharging state.
Preferably, the determining the initial charge amount of the BBU at the system start-up time according to the SOC includes:
and taking the product of the SOC and the design capacity of the BBU as the determined initial charge amount of the BBU at the system starting time.
A reliability monitoring system for a BBU electricity meter, comprising:
the initial charge quantity determining module is used for acquiring the state of charge (SOC) of the Battery Backup Unit (BBU) at the system starting time and determining the initial charge quantity of the BBU at the system starting time according to the SOC;
the first accumulated charge amount determining module is used for determining a first accumulated charge amount accumulated along with time according to the current value acquired by the BBU electricity meter and the charge-discharge state of the BBU after the system is started;
and the first credibility monitoring module is used for determining that the BBU electric meter is not credible when the error between the sum of the initial electric quantity and the first accumulated electric quantity and the RCC measured by the BBU electric meter exceeds a preset first error range at any time after the system is started.
A reliability monitoring device of a BBU electricity meter, comprising:
a memory for storing a computer program;
a processor for executing the computer program to implement the steps of the BBU electricity meter trustworthiness monitoring method of any of the above.
A computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the BBU electricity meter trustworthiness monitoring method of any of the above.
By applying the technical scheme provided by the embodiment of the invention, the initial charge amount of the BBU at the system starting time is determined according to the SOC, after the system is started, the first accumulated charge amount accumulated along with time is determined according to the current value acquired by the BBU electricity meter and the charge-discharge state of the BBU, and if the BBU electricity meter is credible, the error between the sum of the initial charge amount and the first accumulated charge amount and the RCC measured by the BBU electricity meter does not exceed the preset first error range. Because the first accumulated charge amount is directly calculated according to the current value, the stability is high, and therefore if the error between the sum of the initial charge amount and the first accumulated charge amount and the RCC measured by the BBU electricity meter exceeds the preset first error range, it can be shown that the RCC measured by the BBU electricity meter with poor stability has a problem, and the BBU electricity meter can be determined to be unreliable. Therefore, the scheme of the application can effectively determine the reliability of the BBU electricity meter, so that the condition of user data loss is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of an embodiment of a reliability monitoring method of a BBU electricity meter according to the present invention;
FIG. 2 is a schematic structural diagram of a reliability monitoring system of a BBU electricity meter according to the present invention;
FIG. 3 is a schematic structural diagram of a reliability monitoring device of a BBU electricity meter in the present invention.
Detailed Description
The core of the invention is to provide a reliability monitoring method of the BBU electricity meter, which can effectively determine the reliability of the BBU electricity meter, thereby avoiding the condition of user data loss.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart of an implementation of a reliability monitoring method of a BBU electricity meter according to the present invention, where the reliability monitoring method of the BBU electricity meter may include the following steps:
step S101: the method comprises the steps of obtaining the state of charge SOC of a battery backup unit BBU at the system starting time, and determining the initial charge amount of the BBU at the system starting time according to the SOC.
The SOC (State of Charge), which may also be referred to as a remaining capacity fraction, represents a ratio of a remaining capacity of the battery after the battery is used for a certain period of time or left unused for a long time to a capacity of a fully charged State of the battery, and may be generally expressed as a percentage, and the value range is 0 to 1. It is understood that when the SOC is 0%, it means that the battery is completely discharged, and when the SOC is 100%, it means that the battery is completely charged.
Because the reliability of the BBU electricity meter needs to be monitored in the scheme of the application, the SOC is usually obtained by dividing the RCC measured by the BBU electricity meter by the FCC measured by the BBU electricity meter, that is, at the system start time, the reliability of the BBU electricity meter is unknown, and the SOC should not be calculated by using the measured value of the BBU electricity meter.
In obtaining the SOC, the determination can be generally made according to the detected open circuit voltage and a preset curve of the open circuit voltage and the SOC, for example, for a specific model of BBU, when the open circuit voltage is 12.6V, the state is full charge, and according to the curve, the SOC is determined to be 100%. For another example, when the system is started, the open-circuit voltage of the BBU is 12V, and according to the curve, the corresponding SOC is determined to be 80%. The curve can be provided by BBU manufacturer, and of course, in practical application, the relationship curve between the open-circuit voltage and SOC can be fitted through multiple sets of experimental data.
It should be noted that, although the open-circuit voltage and the current value used in the subsequent step S102 are also provided by the BBU fuel gauge, since the voltage and the current are directly measured by the BBU fuel gauge, the error probability is very low, and therefore, the detected voltage and current can be generally considered to be correct regardless of whether the BBU fuel gauge is determined to be authentic or not. Therefore, the SOC at the system start-up time is determined in this embodiment using the open circuit voltage detected by the BBU fuel gauge.
After the SOC of the BBU at the system starting time is determined, the initial charge amount of the BBU at the system starting time can be determined according to the SOC. In a specific embodiment of the present invention, the following may be specifically mentioned: and taking the product of the SOC and the design capacity of the BBU as the determined initial charge amount of the BBU at the system starting time.
That is, in this embodiment, the initial charge amount of the BBU at the system start-up time determined according to the SOC can be represented as: FCC SOC. The FCC in the equation is a design capacity of the BBU, which may be referred to as a chemical capacity, and is a fixed value determined at the time of shipment of the BBU, not the FCC measured by the BBU electricity meter. In the embodiment, the design capacity is adopted to calculate the initial charge amount, and whether the BBU electricity meter is credible or not is also considered in the scheme of the application, so that FCC measured by the BBU electricity meter is not adopted in the step, and the accuracy of the scheme of the application is favorably ensured.
It will be appreciated that in practice, the measured FCC will be equal to the design capacity or only slightly deviate during normal operation of the BBU fuel gauge, and as the battery ages, the measured FCC may gradually decrease.
Step S102: after the system is started, determining a first accumulated charge amount accumulated along with time according to the current value collected by the BBU electricity meter and the charge-discharge state of the BBU.
The first integrated amount of electric charge represents the amount of electric charge accumulated in the BBU calculated from the current value after the system is started. In general, the value of the current collected by the BBU fuel gauge can be integrated over time, and the first amount of accumulated charge can be determined. And it can be understood that when the BBU is in a charging state, the current value is positive, and when the BBU is in a discharging state, the BBU is negative.
In an embodiment of the present invention, considering that in practical applications, the BBU electricity meter usually collects current values according to a preset collection period, if the first accumulated charge amount is calculated in an integral manner, fitting needs to be performed first, and the calculation amount is large. Therefore, in an embodiment of the present invention, the determining the first accumulated amount of charge accumulated over time according to the current value collected by the BBU electricity meter and the charge-discharge state of the BBU described in step S102 may specifically be:
multiplying each current value acquired by the BBU ammeter by cycle time, and determining a first accumulated charge amount accumulated along with time according to the rule that the current value is a positive value when the BBU is in a charging state and the current value is a negative value when the BBU is in a discharging state.
Such a manner determines the first accumulated charge amount based on a simple multiplication, which is simple, beneficial for saving computing resources, and since the acquisition period of the current value is usually not too long, for example, 1 second. And therefore there is not too much error.
For example, in a specific occasion, the BBU electricity meter collects current values once per second, and in the 100 th second after the system is started, the BBU is in a charging state and the current value is always 3A; the discharge state is carried out 20 seconds later, and the current value is always 2A; then, 35 seconds later are also in the discharge state, and the current value is maintained at 2.5A, and the first integrated charge amount is represented by AccumulateCharge, for example, at the time 155 seconds after the system is started, and AccumulateCharge at that time is 100 × 3 to 20 × 2 to 35 × 2.5. And it is understood that the first integrated charge amount is 0 at the time of system start-up.
Step S103: and when the error between the sum of the initial charge amount and the first accumulated charge amount and the RCC measured by the BBU electricity meter exceeds a preset first error range at any time after the system is started, determining that the BBU electricity meter is not credible.
The first integrated charge amount is a variable, and when the BBU electricity meter is authentic, the sum of the initial charge amount and the first integrated charge amount should be close to the RCC measured by the BBU electricity meter for any time after the system is started.
Since the first accumulated charge amount is directly calculated from the current value, the BBU electricity meter generally uses a gas gauge method or an impedance tracking method when measuring FCC and RCC. Compared with the method for calculating the electric charge amount based on the current value, the method adopted by the BBU electric meter considers factors such as temperature and the like, the algorithm is complex, the accuracy of the calculation method adopted by the BBU electric meter is higher when the BBU electric meter normally runs, but the stability of the method is lower than that of a simple method for calculating the first accumulated electric charge amount based on the current value only, namely the BBU electric meter is more prone to error. Therefore, if the error between the sum of the initial amount of charge and the first accumulated amount of charge and the RCC measured by the BBU electricity meter exceeds a preset first error range, it can be determined that the BBU electricity meter is not authentic. Specifically, it can be determined that there is an abnormality in the RCC metered by the BBU electricity meter.
The sum of the initial charge amount and the first accumulated charge amount is denoted as a, and the error between a and the RCC measured by the BBU electricity meter is determined, which may be an absolute error or a relative error.
For example, in an embodiment of the present invention, when the absolute value of the a-RCC is less than or equal to the preset threshold B, it is determined that the error between the a-RCC and the preset threshold B is less than the first error range, and correspondingly, if the absolute value of the a-RCC is greater than the preset threshold B, it may be determined that the error between the a-RCC and the preset threshold B is greater than the first error range, the unit of the preset threshold B is the charge amount, and the specific value may be set and adjusted as needed. And if so, can judge
If the error is less than or equal to 5%, the error of the two is determined to be lower than the first error range, and if the error is greater than 5%, the error of the two is determined to be beyond the first error range. Of course, in this embodiment, 5% is used as the boundary of the first error range, and other values may be used in practical applications.
By applying the technical scheme provided by the embodiment of the invention, the initial charge amount of the BBU at the system starting time is determined according to the SOC, after the system is started, the first accumulated charge amount accumulated along with time is determined according to the current value acquired by the BBU electricity meter and the charge-discharge state of the BBU, and if the BBU electricity meter is credible, the error between the sum of the initial charge amount and the first accumulated charge amount and the RCC measured by the BBU electricity meter does not exceed the preset first error range. Because the first accumulated charge amount is directly calculated according to the current value, the stability is high, and therefore if the error between the sum of the initial charge amount and the first accumulated charge amount and the RCC measured by the BBU electricity meter exceeds the preset first error range, it can be shown that the RCC measured by the BBU electricity meter with poor stability has a problem, and the BBU electricity meter can be determined to be unreliable. Therefore, the scheme of the application can effectively determine the reliability of the BBU electricity meter, so that the condition of user data loss is avoided.
In one embodiment of the present invention, after the system is started, the method further comprises the following steps:
the method comprises the following steps: when the BBU is detected to be in a discharging state, determining a second accumulated charge amount accumulated along with time according to the current value acquired by the BBU electricity meter, and resetting the second accumulated charge amount when the BBU is in a charging state;
step two: and when the second accumulated charge amount reaches a preset first threshold value at any moment and the second accumulated charge amount reaches the first threshold value from 0, the RCC measured by the BBU electricity meter is not changed, and the BBU electricity meter is determined to be unreliable.
The second integrated charge amount is similar to the first integrated charge amount, except that the second integrated charge amount needs to be cleared to be newly integrated when the BBU is transitioned to the charging state, that is, the second integrated charge amount indicates the charge amount of the BBU accumulated discharge calculated by the current value after the BBU is continuously in the discharging state after the BBU is started to be accumulated from 0. The second accumulated charge amount is 0 or a negative value.
When the second accumulated charge amount reaches a preset first threshold value at any time, the BBU is discharged to a certain extent, and at the moment, if the BBU electricity meter is in normal operation, the RCC measured by the BBU electricity meter needs to be changed. Accordingly, if no change has occurred, the BBU meter is determined to be untrustworthy. The specific value of the first threshold may be set and adjusted according to actual conditions, for example, set as the inverse number of 7% of FCC measured by the BBU electricity meter.
In the embodiment, reliability monitoring of the BBU electricity meter is specially performed on the discharging process of the BBU, so that the monitoring effect is further improved, and the incredible condition of the BBU electricity meter is discovered more timely and accurately.
In an embodiment of the present invention, the method may further include:
when the BBU is determined to be in the full state at any time after the system is started, judging whether the error between the RCC measured by the BBU electricity meter and the FCC measured by the BBU electricity meter exceeds a preset second error range or not;
if so, determining that the BBU electricity meter is not authentic.
In the embodiment, when the BBU is in the full-charge state, the reliability of the BBU electricity meter is further monitored. Determining whether the BBU is in a fully charged state can generally be based on a determination of voltage and current, i.e., the charging voltage reaches a full charge voltage, and the BBU can be determined to be in a fully charged state when the charging current is less than a cutoff current. At this time, if the BBU electric meter is credible, the RCC measured by the BBU electric meter and the FCC measured by the BBU electric meter should be similar values, and correspondingly, if the error between the RCC and the FCC exceeds a preset second error range, the BBU electric meter is determined to be credible.
Reference may be made to the description of the first error range in the foregoing, in this embodiment, whether the error between the two has the preset second error range is determined, a manner of determining an absolute error may be adopted, and a relative error may also be determined, which does not affect implementation of the scheme, and accordingly, a value of the second error range may also be adaptively set and adjusted as needed.
In an embodiment of the present invention, the method may further include:
and when the BBU is in a deep discharge state in the calibration process, multiplying the sum of the initial charge amount and the first accumulated charge amount by 2, and determining that the BBU electricity meter is not credible when the error between the product and the FCC measured by the BBU electricity meter exceeds a preset third error range.
The deep discharge state refers to that 50% of electricity is discharged by the BBU, namely the SOC is 50% at the moment, if the BBU electricity meter is in normal operation and is credible, the sum of the initial charge amount and the first accumulated charge amount is multiplied by 2, and the obtained value is similar to the FCC measured by the BBU electricity meter. Correspondingly, if the error between the BBU electricity meter and the BBU electricity meter exceeds a preset third error range, the BBU electricity meter is determined to be not credible.
In the embodiment, reliability monitoring of the BBU electricity meter is further performed aiming at the meter calibration process of the BBU, so that the basic working state of the BBU can be further covered, and more comprehensive reliability monitoring can be realized.
In an embodiment of the present invention, the method may further include:
after determining that the BBU electricity meter is not authentic, the sum of the initial charge amount and the first accumulated charge amount can be used to perform a power backup capability evaluation of the BBU, and prompt information can be output. Namely, after the BBU electric quantity meter is determined to be unreliable, relevant metering quantity of the BBU electric quantity meter is abandoned, and misjudgment of the system on the electric quantity condition of the BBU is avoided. The output prompt information can be set and adjusted according to the requirement, such as recording events, sending alarm prompt, lighting indicator lights, etc.
Corresponding to the above method embodiment, the embodiment of the present invention further provides a reliability monitoring system for a BBU electricity meter, which can be referred to in correspondence with the above.
Referring to fig. 2, a schematic structural diagram of a reliability monitoring system of a BBU electricity meter according to the present invention may include the following modules:
an initial charge amount determining module 201, configured to obtain a state of charge SOC of the battery backup unit BBU at a system start time, and determine an initial charge amount of the BBU at the system start time according to the SOC;
the first accumulated charge amount determining module 202 is configured to determine, after the system is started, a first accumulated charge amount accumulated over time according to the current value collected by the BBU electricity meter and the charge-discharge state of the BBU;
and the first credibility monitoring module 203 is used for determining that the BBU electric meter is not credible when the error between the sum of the initial electric quantity and the first accumulated electric quantity and the RCC measured by the BBU electric meter exceeds a preset first error range at any time after the system is started.
In an embodiment of the present invention, after the system is started, the method further includes:
the second accumulated charge amount determining module is used for determining a second accumulated charge amount accumulated along with time according to the current value collected by the BBU electricity meter when the BBU is detected to be in a discharging state, and resetting the second accumulated charge amount when the BBU is in a charging state;
and the second credibility monitoring module is used for determining that the BBU meter is not credible when the RCC measured by the BBU meter does not change in the process that the second accumulated charge amount reaches the preset first threshold value at any moment and the second accumulated charge amount reaches the first threshold value from 0.
In one embodiment of the present invention, the method further comprises:
the third credibility monitoring module is used for judging whether the error between the RCC measured by the BBU electric quantity meter and the FCC measured by the BBU electric quantity meter exceeds a preset second error range or not when the BBU is determined to be in a full state at any time after the system is started; if so, determining that the BBU electricity meter is not authentic.
In one embodiment of the present invention, the method further comprises:
and the third credibility monitoring module is used for multiplying the sum of the initial charge amount and the first accumulated charge amount by 2 when the BBU is in a deep discharge state in the calibration process, and determining that the BBU electricity meter is not credible when the error between the product and the FCC measured by the BBU electricity meter exceeds a preset third error range.
In one embodiment of the present invention, the method further comprises:
and the standby power evaluation module is used for evaluating the standby power of the BBU by using the sum of the initial charge amount and the first accumulated charge amount after the BBU electricity meter is determined to be untrustworthy, and outputting prompt information.
In a specific embodiment of the invention, the BBU electricity meter acquires the current value according to a preset acquisition cycle;
accordingly, the first accumulated charge amount determining module 202 is specifically configured to:
after the system is started, multiplying each current value acquired by the BBU electricity meter by cycle time, and determining a first accumulated electric charge amount accumulated along with time according to the rule that the current value is a positive value when the BBU is in a charging state and the current value is a negative value when the BBU is in a discharging state.
In an embodiment of the present invention, the initial charge amount determining module 201 is specifically configured to:
and acquiring the state of charge (SOC) of the Battery Backup Unit (BBU) at the system starting time, and taking the product of the SOC and the design capacity of the BBU as the determined initial charge amount of the BBU at the system starting time.
Corresponding to the above method and system embodiments, the embodiment of the present invention further provides a reliability monitoring device of a BBU electricity meter and a computer-readable storage medium, which can be referred to in correspondence with the above.
The computer-readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the reliability monitoring method of the BBU electricity meter in any of the above embodiments. A computer-readable storage medium as referred to herein may include Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
Referring to fig. 3, the reliability monitoring device of the BBU electricity meter may include:
a memory 301 for storing a computer program;
a processor 302 for executing a computer program to implement the steps of the reliability monitoring method of the BBU electricity meter in any of the embodiments described above.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention. The principle and the implementation of the present invention are explained in the present application by using specific examples, and the above description of the embodiments is only used to help understanding the technical solution and the core idea of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A reliability monitoring method of a BBU electricity meter is characterized by comprising the following steps:
the method comprises the steps of obtaining the state of charge (SOC) of a Battery Backup Unit (BBU) at the system starting time, and determining the initial charge amount of the BBU at the system starting time according to the SOC;
after the system is started, determining a first accumulated charge amount accumulated along with time according to the current value acquired by the BBU electricity meter and the charge-discharge state of the BBU;
determining that the BBU electricity meter is not authentic when an error between a sum of the initial charge amount and the first accumulated charge amount and the RCC measured by the BBU electricity meter exceeds a preset first error range at any time after the system is started.
2. The method for monitoring the trustworthiness of a BBU electricity meter of claim 1, further comprising, after the system is booted:
when the BBU is detected to be in a discharging state, determining a second accumulated charge amount accumulated along with time according to the current value acquired by the BBU electricity meter, and clearing the second accumulated charge amount when the BBU is in a charging state;
and when the second accumulated charge amount reaches a preset first threshold value at any moment and the second accumulated charge amount reaches the first threshold value from 0, the RCC measured by the BBU electricity meter is not changed, and the BBU electricity meter is determined to be unreliable.
3. The method for monitoring the trustworthiness of a BBU electricity meter of claim 1, further comprising:
when the BBU is determined to be in a full state at any time after the system is started, judging whether an error between the RCC measured by the BBU electricity meter and the FCC measured by the BBU electricity meter exceeds a preset second error range or not;
if so, determining that the BBU electricity meter is not authentic.
4. The method for monitoring the trustworthiness of a BBU electricity meter of claim 1, further comprising:
and when the BBU is in a deep discharge state in the calibration process, multiplying the sum of the initial charge amount and the first accumulated charge amount by 2, and when the error between the product and the FCC measured by the BBU electricity meter exceeds a preset third error range, determining that the BBU electricity meter is not credible.
5. The method for monitoring the trustworthiness of a BBU electricity meter of claim 1, further comprising:
and after the BBU electricity meter is determined to be not credible, evaluating the power-standby capacity of the BBU by using the sum of the initial charge amount and the first accumulated charge amount, and outputting prompt information.
6. The reliability monitoring method of the BBU electricity meter according to any one of claims 1 to 5, wherein the BBU electricity meter acquires a current value according to a preset acquisition cycle;
correspondingly, the determining a first accumulated charge amount accumulated over time according to the current value collected by the BBU electricity meter and the charge-discharge state of the BBU includes:
multiplying each current value acquired by the BBU ammeter by cycle time, and determining a first accumulated charge amount accumulated along with time according to the rule that the current value is a positive value when the BBU is in a charging state and the current value is a negative value when the BBU is in a discharging state.
7. The method of monitoring the reliability of a BBU electricity meter of claim 1, wherein said determining an initial charge amount of the BBU at system start-up time based on said SOC comprises:
and taking the product of the SOC and the design capacity of the BBU as the determined initial charge amount of the BBU at the system starting time.
8. A reliability monitoring system of a BBU electricity meter, comprising:
the initial charge quantity determining module is used for acquiring the state of charge (SOC) of the Battery Backup Unit (BBU) at the system starting time and determining the initial charge quantity of the BBU at the system starting time according to the SOC;
the first accumulated charge amount determining module is used for determining a first accumulated charge amount accumulated along with time according to the current value acquired by the BBU electricity meter and the charge-discharge state of the BBU after the system is started;
and the first credibility monitoring module is used for determining that the BBU electric meter is not credible when the error between the sum of the initial electric quantity and the first accumulated electric quantity and the RCC measured by the BBU electric meter exceeds a preset first error range at any time after the system is started.
9. A reliability monitoring device of a BBU electricity meter, comprising:
a memory for storing a computer program;
a processor for executing the computer program to implement the steps of the method of reliability monitoring of a BBU electricity meter according to any of claims 1 to 7.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of reliability monitoring of a BBU electricity meter according to any one of claims 1 to 7.
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