CN113126018A - Early warning method and system for starting and stopping parameters of electric energy metering device verification equipment - Google Patents
Early warning method and system for starting and stopping parameters of electric energy metering device verification equipment Download PDFInfo
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- CN113126018A CN113126018A CN202110421585.4A CN202110421585A CN113126018A CN 113126018 A CN113126018 A CN 113126018A CN 202110421585 A CN202110421585 A CN 202110421585A CN 113126018 A CN113126018 A CN 113126018A
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
Abstract
The invention provides a method and a system for early warning the start-stop parameters of calibration equipment of an electric energy metering device, which are used for acquiring the real-time start-stop parameters of the calibration equipment when the operation state of the calibration equipment is switched, determining whether the calibration equipment is in the warning state according to the real-time start-stop parameters of the calibration equipment, sending a warning signal when the calibration equipment is in the warning state, feeding back the parameter condition of the calibration equipment in the process of switching in or out to an operator or a control system in time, providing information about abnormal start-stop parameters of the calibration equipment for the operator or the control system of the calibration equipment in time, facilitating the operator or the control system to make adjustments in time, avoiding the possibility of introducing errors into the calibration result of the electric energy metering device when the calibration equipment is switched in or out in the state not meeting the conditions, and improving the.
Description
Technical Field
The invention relates to the technical field of equipment detection, in particular to an early warning method and system for starting and stopping parameters of electric energy metering device verification equipment.
Background
An electric energy metering device is an important metering device in the process of creating, transmitting and applying electric power as a device for metering electric quantity of an electric power system. With the development of computer technology and automation control technology, the automatic calibration process of the electric energy metering device tends to be changed from the traditional manual control to a complete automation process, so that the calibration production efficiency can be greatly improved, the calibration production cost can be reduced, and the accident probability can be reduced. The electric energy metering device verification equipment is a set of a series of equipment which can provide standard source signals and can determine the output result of the electric energy metering device through calculation, whether the electric energy metering device verification equipment can be safely, reliably and reasonably input or not is very important for the verification result and even the whole automatic verification production line.
The inventor finds that, for the operation debugging and function implementation conditions of the verification equipment capable of realizing the automatic verification of the electric energy metering device, no special evaluation standard is established in the related art, and since the verification equipment needs to be started or stopped frequently to provide a standard source signal for the electric energy metering device loaded on the verification equipment, the related art does not provide an effective mechanism to ensure the reasonability and controllability of each time of the input (starting) or output (stopping) of the verification equipment, and errors can be introduced into the verification result of the electric energy metering device when the verification equipment is input or output in an unqualified state.
Disclosure of Invention
The invention aims to solve at least one of the technical problems in the prior art, provides a method and a system for early warning the start-stop parameters of verification equipment of an electric energy metering device, and solves the technical problem that errors can be introduced into the verification result of the electric energy metering device when the verification equipment is put into or cut out under the condition that the verification equipment does not meet the conditions.
In order to achieve the purpose, the following technical scheme is provided:
in a first aspect, the invention provides an early warning method for starting and stopping parameters of verification equipment of an electric energy metering device, comprising the following steps:
acquiring real-time start-stop parameters of the verification equipment when the operation state of the verification equipment is switched; the real-time start-stop parameters are running parameters of the verification equipment during starting or stopping;
determining whether the verification equipment is in an alarm state according to the real-time start-stop parameters of the verification equipment;
and when the verification equipment is in an alarm state, sending an alarm signal.
As a further improvement, the specific process of determining whether the certification equipment is in an alarm state according to the real-time start-stop parameters of the certification equipment includes:
comparing each real-time start-stop parameter of the verification equipment with a corresponding threshold value to obtain an intermediate result for indicating whether each real-time start-stop parameter meets the threshold value condition;
and determining whether the verification equipment is in an alarm state or not according to the intermediate result corresponding to each real-time start-stop parameter.
As a further improvement, the specific process of determining whether the verification equipment is in the alarm state according to the intermediate result corresponding to each real-time start-stop parameter includes:
when M intermediate results in the N intermediate results of the verification equipment indicate that the corresponding real-time start-stop parameters of the verification equipment meet threshold conditions, determining that the verification equipment is in an alarm state;
wherein N, M are natural numbers, N is more than or equal to M, and M/N is more than or equal to 1/2.
As a further improvement, the specific process of acquiring the real-time start-stop parameters of the verification equipment comprises the following steps:
and acquiring real-time start-stop parameters of the verification equipment through a sensor coupled with the verification equipment.
As a further improvement, before the step of acquiring real-time start-stop parameters of the certification equipment, the method further comprises:
determining whether the verification equipment receives a state conversion signal; the state switching signal is used for indicating the calibrating equipment to switch the running state, and the switching of the running state comprises starting the calibrating equipment or stopping the running of the calibrating equipment;
and when the verification equipment receives the state conversion signal, determining that the verification equipment is switched to the running state.
As a further improvement, the specific process of sending the alarm signal comprises the following steps:
and controlling an alarm device to send out a corresponding alarm signal, wherein the alarm device is a display, an alarm lamp or a loudspeaker.
In a second aspect, the present invention provides an early warning system for start-stop parameters of calibration equipment of an electric energy metering device, where the system includes:
the parameter acquisition module is used for acquiring real-time start-stop parameters of the verification equipment when the operation state of the verification equipment is switched; the real-time start-stop parameters are running parameters of the verification equipment during starting or stopping;
the alarm judging module is used for determining whether the verification equipment is in an alarm state according to the real-time start-stop parameters of the verification equipment;
and the alarm sending module is used for sending an alarm signal when the verification equipment is in an alarm state.
As a further improvement, the alarm determination module comprises:
the intermediate result determining unit is used for comparing each real-time start-stop parameter of the verification equipment with a corresponding threshold value to obtain an intermediate result for indicating whether each real-time start-stop parameter meets the threshold value condition;
and the alarm judging unit is used for determining whether the verification equipment is in an alarm state according to the intermediate result corresponding to each real-time start-stop parameter.
As a further improvement, the alarm determination unit is further configured to:
when M intermediate results in the N intermediate results of the verification equipment indicate that the corresponding real-time start-stop parameters of the verification equipment meet threshold conditions, determining that the verification equipment is in an alarm state;
wherein N, M are natural numbers, N is more than or equal to M, and M/N is more than or equal to 1/2.
As a further improvement, the system further comprises an operation state determination module, and the operation state determination module is configured to:
determining whether the verification equipment receives the state conversion signal or not, and determining that the verification equipment is switched to the running state when the verification equipment receives the state conversion signal; the state switching signal is used for indicating the calibration equipment to switch the operation state, and the switching of the operation state comprises starting the calibration equipment or stopping the operation of the calibration equipment.
In a third aspect, an embodiment of the present invention provides a computer-readable storage medium, where computer-executable instructions are stored, and the computer-executable instructions are configured to enable a computer to execute a method for early warning start-stop parameters of an electric energy metering device verification apparatus as described in any one of the above.
Compared with the prior art, the early warning method and the early warning system for the start-stop parameters of the verification equipment of the electric energy metering device have the following beneficial effects:
the invention provides a method and a system for early warning the start-stop parameters of calibration equipment of an electric energy metering device, which are used for acquiring the real-time start-stop parameters of the calibration equipment when the operation state of the calibration equipment is switched, determining whether the calibration equipment is in the warning state according to the real-time start-stop parameters of the calibration equipment, sending a warning signal when the calibration equipment is in the warning state, feeding back the parameter condition of the calibration equipment in the process of switching in or out to an operator or a control system in time, providing information about abnormal start-stop parameters of the calibration equipment for the operator or the control system of the calibration equipment in time, facilitating the operator or the control system to make adjustments in time, avoiding the possibility of introducing errors into the calibration result of the electric energy metering device when the calibration equipment is switched in or out in the state not meeting the conditions, and improving the.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described below with reference to the accompanying drawings and examples;
fig. 1 is an application environment diagram of an early warning method for start-stop parameters of a calibration device of an electric energy metering device in one embodiment.
Fig. 2 is a schematic flow chart of an early warning method for start-stop parameters of calibration equipment of an electric energy metering device in one embodiment.
FIG. 3 shows the M-th diagram in one embodimentiAn example schematic diagram of an alarm judgment module of each verification device.
Fig. 4 is a block diagram of a start-stop parameter early warning system of a verification device of an electric energy metering device in one embodiment.
FIG. 5 is a block diagram of a computer device in one embodiment.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
Fig. 1 is an application environment diagram of an early warning method for start-stop parameters of a calibration device of an electric energy metering device in one embodiment. Referring to fig. 1, the method for early warning the start-stop parameters of the calibration equipment of the electric energy metering device is applied to an early warning system for the start-stop parameters of the calibration equipment of the electric energy metering device. The early warning system for the start-stop parameters of the electric energy metering device calibrating equipment comprises a terminal, wherein the terminal can perform data transmission with the calibrating equipment, obtains the operating parameters of the calibrating equipment during starting or stopping through a sensor (such as a voltage sensor or a current sensor), and transmits the operating parameters to the terminal through a merging unit. The terminal may specifically be a desktop terminal or a mobile terminal, and the mobile terminal may specifically be at least one of a mobile phone, a tablet computer, a notebook computer, and the like.
The method for early warning the start-stop parameter of the electric energy metering device verification equipment provided by the embodiment of the invention will be described and explained in detail through several specific embodiments.
As shown in fig. 2, in one embodiment, a method for early warning start-stop parameters of a calibration apparatus of an electric energy metering device is provided. The embodiment is mainly illustrated by applying the method to computer equipment. The computer device may specifically be the terminal in fig. 1 described above.
As shown in fig. 2, the method comprises the steps of:
step S100: the terminal determines whether the verification equipment receives the state conversion signal; the state switching signal is used for indicating the calibration equipment to switch the operation state, and the switching of the operation state comprises starting the calibration equipment or stopping the operation of the calibration equipment.
Specifically, the state transition signal refers to a command for controlling the starting or stopping of the certification equipment, and the command is from a control command issued by an upper computer or a command manually input on the certification equipment by an operator. The terminal is in data communication connection with the verification equipment through the serial communication interface, and whether the verification equipment receives the command can be monitored.
Step S101: and when the verification equipment receives the state conversion signal, the terminal determines that the verification equipment is switched to the running state.
Step S102: the method comprises the steps that when the operation state of verification equipment is switched, a terminal obtains real-time start-stop parameters of the verification equipment; the real-time start-stop parameters are running parameters of the verification equipment during starting or stopping.
Specifically, the terminal acquires real-time start-stop parameters of the calibration equipment through a sensor coupled with the calibration equipment. It is understood that, as shown in fig. 1, in one example, corresponding sensors (including voltage sensors or current sensors, etc.) are installed on corresponding certification equipment, and real-time start-stop parameters such as current or voltage of the certification equipment during start-up or stop are obtained through the sensors and transmitted to the terminal through the merging unit.
Step S104: and the terminal determines whether the verification equipment is in an alarm state according to the real-time start-stop parameters of the verification equipment.
In one example, the specific process of determining whether the certification equipment is in an alarm state according to the real-time start-stop parameters of the certification equipment includes:
step S1041: and comparing each real-time start-stop parameter of the verification equipment with a corresponding threshold value to obtain an intermediate result for indicating whether each real-time start-stop parameter meets the threshold value condition.
Specifically, as shown in FIG. 3, for the M-thiFor each assay device, wherein on->off refers to the cessation of the assay equipment, off->on refers to the assay device starting. The number of the real-time start-stop parameters acquired by the terminal in step S102 is n, after the n real-time start-stop parameters are compared with corresponding thresholds in step S1041, intermediate results with true or false results (that is, the intermediate results are true when the real-time start-stop parameters satisfy the threshold condition, and vice versa) are obtained, the number of the intermediate results is the same as the number of the real-time parameters, in fig. 3, the intermediate results corresponding to the nth real-time start-stop parameter are represented by Sn, where n is a natural number. It is understood that since Sn has only two values, Sn can be given with 1 and 0 to indicate its value.
Step S1042: and determining whether the verification equipment is in an alarm state or not according to the intermediate result corresponding to each real-time start-stop parameter.
Further, after the Sn values are given by 1 and 0, boolean operations may be performed on the n intermediate results to determine whether the certification equipment is in an alarm state. For example, in one example, the boolean operation rule that determines that the certification equipment is in an alarm state is set to:
when M intermediate results in the N intermediate results of the verification equipment indicate that the corresponding real-time start-stop parameters of the verification equipment meet threshold conditions, determining that the verification equipment is in an alarm state;
wherein N, M are natural numbers, N is more than or equal to M, and M/N is more than or equal to 1/2.
Of course, the algorithm shown in fig. 3 may be used, and fig. 3 provides two different algorithms for determining that the certification equipment is in an alarm state. The specific operation rule is not limited herein.
It is understood that, for the present invention, a plurality of verification devices can be connected to one terminal, and corresponding sensors can be arranged according to corresponding requirements, and the M is usediNumbering is carried out to distinguish different verification equipment, wherein i is a natural number, and the expansion of a plurality of verification equipment is facilitated.
Step S106: and when the verification equipment is in an alarm state, the terminal sends out an alarm signal.
Specifically, the terminal controls an alarm device to send out a corresponding alarm signal, wherein the alarm device is a display, an alarm lamp or a loudspeaker. For the case that the display is used as the warning device, when the verification equipment is in a warning state, the terminal may output a corresponding warning text prompt or pattern prompt to the display, and may display a corresponding warning signal on the display, for example, the warning signal is a text "mthiAnd the platform verification equipment inputs power frequency voltage distortion out-of-limit alarm and the like. Therefore, when the alarm is given, the operator can conveniently know the reason of the abnormity in time, and the maintenance of the verification equipment is accelerated. It can be understood that after the terminal sends the alarm signal, other content of the alarm, including the intermediate result or the information of the real-time start-stop parameter, etc., can be sent to the upper computer or the local memory for storage and backup, so that subsequent reference is facilitated.
In summary, according to the early warning method and system for the start-stop parameters of the calibration equipment of the electric energy metering device provided by the invention, the real-time start-stop parameters of the calibration equipment are obtained when the operation state of the calibration equipment is switched, whether the calibration equipment is in the warning state is determined according to the real-time start-stop parameters of the calibration equipment, when the calibration equipment is in the warning state, a warning signal can be sent out, the parameter condition of the calibration equipment in the process of putting in or cutting out is fed back to an operator or a control system in time, abnormal information of the start-stop parameters of the calibration equipment is provided for the operator or the control system of the calibration equipment in time, the operator or the control system can make adjustments in time conveniently, errors possibly introduced to the calibration result of the electric energy metering device when the calibration equipment is put in or cut out under the state which.
On the other hand, the invention also provides an early warning system for the start-stop parameters of the verification equipment of the electric energy metering device, which comprises the following components:
the parameter acquiring module 102 is configured to acquire real-time start-stop parameters of the verification equipment when the operation state of the verification equipment is switched; the real-time start-stop parameters are running parameters of the verification equipment during starting or stopping;
the alarm determination module 103 is configured to determine whether the verification equipment is in an alarm state according to the real-time start-stop parameter of the verification equipment;
and the alarm sending module 104 is used for sending an alarm signal when the verification equipment is in an alarm state.
As a further improvement, the alarm determination module 103 includes:
the intermediate result determining unit is used for comparing each real-time start-stop parameter of the verification equipment with a corresponding threshold value to obtain an intermediate result for indicating whether each real-time start-stop parameter meets the threshold value condition;
and the alarm judging unit is used for determining whether the verification equipment is in an alarm state according to the intermediate result corresponding to each real-time start-stop parameter.
As a further improvement, the alarm determination unit is further configured to:
when M intermediate results in the N intermediate results of the verification equipment indicate that the corresponding real-time start-stop parameters of the verification equipment meet threshold conditions, determining that the verification equipment is in an alarm state;
wherein N, M are natural numbers, N is more than or equal to M, and M/N is more than or equal to 1/2.
As a further improvement, the system further includes an operation state determination module 101, where the operation state determination module 101 is configured to:
determining whether the verification equipment receives the state conversion signal or not, and determining that the verification equipment is switched to the running state when the verification equipment receives the state conversion signal; the state switching signal is used for indicating the calibration equipment to switch the operation state, and the switching of the operation state comprises starting the calibration equipment or stopping the operation of the calibration equipment.
It is understood that the system embodiment of the present invention and the method embodiment described above are based on the same inventive concept and will not be described herein again.
FIG. 5 is a diagram illustrating an internal structure of a computer device in one embodiment. The computer device may specifically be the terminal in fig. 1. As shown in fig. 5, the computer apparatus includes a processor, a memory, a network interface, and an input device connected through a system bus. Wherein the memory includes a non-volatile storage medium and an internal memory. The non-volatile storage medium of the computer equipment stores an operating system and also stores a computer program, and when the computer program is executed by the processor, the processor can realize the early warning method for the starting and stopping parameters of the electric energy metering device verification equipment. The internal memory can also store a computer program, and when the computer program is executed by the processor, the processor can execute the early warning method for the start-stop parameters of the verification equipment of the electric energy metering device. Those skilled in the art will appreciate that the configuration shown in fig. 5 is a block diagram of only a portion of the configuration associated with aspects of the present invention and is not intended to limit the computing devices to which aspects of the present invention may be applied, and that a particular computing device may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, the electric energy metering device verification equipment start-stop parameter early warning system provided by the application can be implemented in the form of a computer program, and the computer program can be run on computer equipment as shown in fig. 5. The memory of the computer device may store various program modules constituting the early warning system for the start-stop parameter of the calibration device of the electric energy metering device, for example, a parameter obtaining module 102, an alarm determining module 103 and an alarm sending module 104 shown in fig. 4. The computer program formed by the program modules enables the processor to execute the steps of the method for early warning the start-stop parameters of the electric energy metering device verification equipment in the embodiments of the application described in the specification.
For example, the computer device shown in fig. 5 may execute the step of acquiring the real-time start-stop parameters of the verification device when the operation state of the verification device is switched by using the parameter acquisition module 102 in the early warning system for start-stop parameters of the verification device of the electric energy metering device shown in fig. 4; the real-time start-stop parameters are running parameters of the verification equipment during starting or stopping. And the step of determining whether the verification equipment is in an alarm state according to the real-time start-stop parameters of the verification equipment is executed through the alarm determination module 103. The step of issuing an alarm signal when the certification equipment is in an alarm state is performed by the alarm issuing module 104.
In one embodiment, there is provided an electronic device including: the electric energy metering device calibration equipment starting and stopping parameter early warning method comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor executes the steps of the electric energy metering device calibration equipment starting and stopping parameter early warning method when executing the program. The steps of the early warning method for the start-stop parameters of the electric energy metering device calibration equipment may be steps in the early warning method for the start-stop parameters of the electric energy metering device calibration equipment in each of the above embodiments.
In one embodiment, a computer-readable storage medium is provided, which stores computer-executable instructions for causing a computer to perform the steps of the above-mentioned method for warning start-stop parameters of a calibration apparatus of an electric energy metering device. The steps of the early warning method for the start-stop parameters of the electric energy metering device calibration equipment may be steps in the early warning method for the start-stop parameters of the electric energy metering device calibration equipment in each of the above embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a non-volatile computer-readable storage medium, and can include the processes of the embodiments of the methods described above when the program is executed. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), synchronous Link (Synchlink) DRAM (SLDRA), Rambus Direct RAM (RDRA), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
Claims (10)
1. A method for early warning start-stop parameters of verification equipment of an electric energy metering device is characterized by comprising the following steps:
acquiring real-time start-stop parameters of the verification equipment when the operation state of the verification equipment is switched; the real-time start-stop parameters are running parameters of the verification equipment during starting or stopping;
determining whether the verification equipment is in an alarm state according to the real-time start-stop parameters of the verification equipment;
and when the verification equipment is in an alarm state, sending an alarm signal.
2. The early warning method for the start-stop parameters of the verification equipment of the electric energy metering device according to claim 1, wherein the specific process of determining whether the verification equipment is in the warning state or not according to the real-time start-stop parameters of the verification equipment comprises the following steps:
comparing each real-time start-stop parameter of the verification equipment with a corresponding threshold value to obtain an intermediate result for indicating whether each real-time start-stop parameter meets the threshold value condition;
and determining whether the verification equipment is in an alarm state or not according to the intermediate result corresponding to each real-time start-stop parameter.
3. The early warning method for the start-stop parameters of the verification equipment of the electric energy metering device according to claim 2, wherein the specific process of determining whether the verification equipment is in the warning state according to the intermediate result corresponding to each real-time start-stop parameter comprises the following steps:
when M intermediate results in the N intermediate results of the verification equipment indicate that the corresponding real-time start-stop parameters of the verification equipment meet threshold conditions, determining that the verification equipment is in an alarm state;
wherein N, M are natural numbers, N is more than or equal to M, and M/N is more than or equal to 1/2.
4. The early warning method for the start-stop parameters of the verification equipment of the electric energy metering device according to claim 1, wherein the specific process of acquiring the real-time start-stop parameters of the verification equipment comprises the following steps:
and acquiring real-time start-stop parameters of the verification equipment through a sensor coupled with the verification equipment.
5. The early warning method for the start-stop parameters of the verification equipment of the electric energy metering device according to claim 1, wherein before the step of obtaining the real-time start-stop parameters of the verification equipment, the method further comprises:
determining whether the verification equipment receives a state conversion signal; the state switching signal is used for indicating the calibrating equipment to switch the running state, and the switching of the running state comprises starting the calibrating equipment or stopping the running of the calibrating equipment;
and when the verification equipment receives the state conversion signal, determining that the verification equipment is switched to the running state.
6. The early warning method for the start-stop parameters of the verification equipment of the electric energy metering device according to claim 1, wherein the specific process of sending out the warning signal comprises the following steps:
and controlling an alarm device to send out a corresponding alarm signal, wherein the alarm device is a display, an alarm lamp or a loudspeaker.
7. The utility model provides an electric energy metering device examination equipment opens and stops parameter early warning system which characterized in that, the system includes:
the parameter acquisition module is used for acquiring real-time start-stop parameters of the verification equipment when the operation state of the verification equipment is switched; the real-time start-stop parameters are running parameters of the verification equipment during starting or stopping;
the alarm judging module is used for determining whether the verification equipment is in an alarm state according to the real-time start-stop parameters of the verification equipment;
and the alarm sending module is used for sending an alarm signal when the verification equipment is in an alarm state.
8. The electric energy metering device verification equipment start-stop parameter early warning system of claim 7, wherein the alarm determination module comprises:
the intermediate result determining unit is used for comparing each real-time start-stop parameter of the verification equipment with a corresponding threshold value to obtain an intermediate result for indicating whether each real-time start-stop parameter meets the threshold value condition;
and the alarm judging unit is used for determining whether the verification equipment is in an alarm state according to the intermediate result corresponding to each real-time start-stop parameter.
9. The electric energy metering device verification equipment start-stop parameter early warning system of claim 8, wherein the alarm determination unit is further configured to:
when M intermediate results in the N intermediate results of the verification equipment indicate that the corresponding real-time start-stop parameters of the verification equipment meet threshold conditions, determining that the verification equipment is in an alarm state;
wherein N, M are natural numbers, N is more than or equal to M, and M/N is more than or equal to 1/2.
10. The electric energy metering device verification equipment start-stop parameter early warning system of claim 7, further comprising an operation state determination module, the operation state determination module being configured to:
determining whether the verification equipment receives the state conversion signal or not, and determining that the verification equipment is switched to the running state when the verification equipment receives the state conversion signal; the state switching signal is used for indicating the calibration equipment to switch the operation state, and the switching of the operation state comprises starting the calibration equipment or stopping the operation of the calibration equipment.
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