阅读说明：本技术 电量变送器检定装置稳定性的确定装置及其方法和电子设备 (Device and method for determining stability of electric quantity transmitter calibrating device and electronic equipment ) 是由 崔志坚 赵跃 吴长青 周权 于 2020-06-28 设计创作，主要内容包括：本申请公开了一种电量变送器检定装置稳定性的确定方法和电子设备,属于电量变送器技术领域。该方法包括：多次启动被检装置,使得所述被检装置多次向电量变送器检定装置输出直流电流,其中,所述被检装置为直流恒流源；多次启动所述电量变送器检定装置,使得所述电量变送器检定装置依次测量所述被检装置多次输出的直流电流的电流值,得到对应的多个测量电流值；处理器基于所述多个测量电流值,确定所述电量变送器检定装置的稳定性。(The application discloses a method for determining stability of a calibrating device of an electric quantity transmitter and electronic equipment, and belongs to the technical field of electric quantity transmitters. The method comprises the following steps: starting the detected device for multiple times to enable the detected device to output direct current to the electric quantity transmitter calibrating device for multiple times, wherein the detected device is a direct current constant current source; starting the electric quantity transmitter calibrating device for multiple times, so that the electric quantity transmitter calibrating device sequentially measures the current values of the direct current output by the detected device for multiple times to obtain a plurality of corresponding measured current values; the processor determines the stability of the electrical quantity transmitter calibrating device based on the plurality of measured current values.)

1. The utility model provides a confirming device of electric quantity transmitter calibrating installation stability which characterized in that, includes electric quantity transmitter calibrating installation, is examined device, treater and load device, wherein:

the output end of the electric quantity transmitter calibrating device is connected with the input end of the load device; the electric quantity transmitter calibrating device is used for outputting alternating current to the load device and measuring an actual alternating current value by the electric quantity transmitter calibrating device;

the output end of the detected device is connected with the input end of the electric quantity transmitter calibrating device, the detected device is used for outputting direct current to the electric quantity transmitter calibrating device, so that the electric quantity transmitter calibrating device measures the current value of the direct current to obtain a measured current value, and the detected device is a direct current constant current source;

the processor is connected with the electric quantity transmitter calibrating device, and the processor is used for determining the current value of the direct current based on the current value of the alternating current and the input standard current value of the electric quantity transmitter calibrating device, and determining the stability of the electric quantity transmitter calibrating device based on the current value of the direct current and the measured current value.

2. A method for determining stability of a calibration device of a power transmitter, the method being applied to the stability determination device of the calibration device of the power transmitter of claim 1, and comprising:

starting the detected device for multiple times to enable the detected device to output direct current to the electric quantity transmitter calibrating device for multiple times, wherein the detected device is a direct current constant current source;

starting the electric quantity transmitter calibrating device for multiple times, so that the electric quantity transmitter calibrating device sequentially measures the current values of the direct current output by the detected device for multiple times to obtain a plurality of corresponding measured current values;

the processor determines the stability of the electrical quantity transmitter calibrating device based on the plurality of measured current values.

3. The method of claim 2, wherein before the activating the device under test multiple times such that the device under test outputs a direct current to the transmitter verification device multiple times, the method further comprises:

the electric quantity transmitter calibrating device sequentially measures the current values of the alternating current output by the electric quantity transmitter calibrating device to obtain a plurality of current values of the alternating current;

the processor sequentially determines the plurality of current values of the direct current based on the plurality of current values of the alternating current, the input standard current value of the electric quantity transmitter calibrating device and a linear relation between the input standard current value and the output standard current value of the electric quantity transmitter calibrating device.

4. The method of claim 3, wherein the processor determines the stability of the transmitter verification device based on the plurality of measured current values, comprising:

the processor sequentially determines a plurality of difference values between the plurality of measured current values and the plurality of current values of the direct current based on the plurality of measured current values and the plurality of current values of the direct current, wherein the plurality of measured current values correspond to the plurality of current values of the direct current in sequence one-to-one correspondence;

the processor determines a plurality of errors corresponding to the plurality of difference values based on the plurality of difference values and the measuring range of the electric quantity transmitter calibrating device, wherein the errors are expressed by means of error reference;

and the processor determines the stability of the electric quantity transmitter calibrating device based on the plurality of errors.

5. The method of claim 4, wherein the processor determines the stability of the transmitter verification device based on the plurality of errors, comprising:

the processor obtains a standard deviation of the plurality of errors based on the plurality of errors;

if the standard deviation is smaller than a preset deviation, determining that the stability of the electric quantity transmitter calibrating device meets a preset requirement;

and if the standard deviation is greater than or equal to the preset deviation, determining that the stability of the electric quantity transmitter calibrating device does not meet the preset requirement.

6. A further apparatus for determining stability of a transmitter calibration apparatus, comprising the apparatus for determining stability of a transmitter calibration apparatus according to claim 1, comprising:

the first starting unit is used for starting the detected device for multiple times so that the detected device outputs direct current to the electric quantity transmitter calibrating device for multiple times, wherein the detected device is a direct current constant current source;

the second starting unit is used for starting the electric quantity transmitter calibrating device for multiple times, so that the electric quantity transmitter calibrating device sequentially measures the current values of the direct current output by the detected device for multiple times to obtain a plurality of corresponding measured current values;

and the determining unit is used for determining the stability of the electric quantity transmitter calibrating device based on the plurality of measured current values by the processor.

7. The apparatus of claim 6, further comprising:

the second measuring unit is used for sequentially measuring the current values of the alternating current output by the electric quantity transmitter calibrating device to obtain a plurality of current values of the alternating current;

the processor sequentially determines the plurality of current values of the direct current based on the plurality of current values of the alternating current, the input standard current value of the electric quantity transmitter calibrating device and a linear relation between the input standard current value and the output standard current value of the electric quantity transmitter calibrating device.

8. The apparatus of claim 7, wherein the determining unit is configured to:

the processor sequentially determines a plurality of difference values between the plurality of measured current values and the plurality of current values of the direct current based on the plurality of measured current values and the plurality of current values of the direct current, wherein the plurality of measured current values correspond to the plurality of current values of the direct current in sequence one-to-one correspondence;

the processor determines a plurality of errors corresponding to the plurality of difference values based on the plurality of difference values and the measuring range of the electric quantity transmitter calibrating device, wherein the errors are expressed by means of error reference;

and the processor determines the stability of the electric quantity transmitter calibrating device based on the plurality of errors.

9. An electronic device, comprising:

a processor; and

a memory arranged to store computer executable instructions that, when executed, cause the processor to:

starting the detected device for multiple times to enable the detected device to output direct current to the electric quantity transmitter calibrating device for multiple times, wherein the detected device is a direct current constant current source;

starting the electric quantity transmitter calibrating device for multiple times, so that the electric quantity transmitter calibrating device sequentially measures the current values of the direct current output by the detected device for multiple times to obtain a plurality of corresponding measured current values;

the processor determines the stability of the electrical quantity transmitter calibrating device based on the plurality of measured current values.

10. A computer-readable storage medium storing one or more programs that, when executed by an electronic device including a plurality of application programs, cause the electronic device to:

starting the detected device for multiple times to enable the detected device to output direct current to the electric quantity transmitter calibrating device for multiple times, wherein the detected device is a direct current constant current source;

starting the electric quantity transmitter calibrating device for multiple times, so that the electric quantity transmitter calibrating device sequentially measures the current values of the direct current output by the detected device for multiple times to obtain a plurality of corresponding measured current values;

the processor determines the stability of the electrical quantity transmitter calibrating device based on the plurality of measured current values.

Technical Field

The application belongs to the field of electric quantity transmitters, and particularly relates to a device and a method for determining stability of an electric quantity transmitter calibrating device and electronic equipment.

Background

In order to ensure the measurement accuracy of the electric quantity transmitter, a high-precision electric quantity transmitter calibrating device is adopted to calibrate the low-precision electric quantity transmitter according to the technical specification of measurement of the people's republic of china.

However, the repeatability and the stability of the calibration device for the electric quantity transmitter greatly affect the calibration result of the electric quantity transmitter, wherein the repeatability refers to the measurement precision under a set of repeatability conditions, and the stability refers to the capability of the metering standard to keep the constant metering characteristics of the metering standard along with time (the metering standard assessment standard extracted from the technical specification of the people's republic of China). Therefore, the verification device of the electric quantity transmitter needs to be verified, the verification is qualified to ensure that the metering technical performance of the electric quantity transmitter meets the requirement of the metering regulation, and the magnitude transmission work of the low-grade electric quantity transmitter or the magnitude traceability work of the low-grade electric quantity transmitter can be carried out after the verification is qualified.

In the process of implementing the present application, the inventor finds that the prior art has at least the following problems: because the stability of the low-precision power transmitter is poor, when the low-precision power transmitter is used as the high-precision power transmitter calibrating device, the data measured by the high-precision power transmitter calibrating device can be influenced, so that a result of poor stability of the high-precision power transmitter calibrating device is generated, and the result is inaccurate.

Disclosure of Invention

The embodiment of the application aims to provide a device and a method for determining the stability of a calibration device of an electric quantity transmitter and electronic equipment, and the device and the method can solve the problem that the determination result of the stability of the calibration device of the electric quantity transmitter in the prior art is inaccurate.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present application provides a device for determining stability of a power transmitter calibrating device, including a power transmitter calibrating device, a device to be detected, a processor, and a load device, wherein:

the output end of the electric quantity transmitter calibrating device is connected with the input end of the load device; the electric quantity transmitter calibrating device is used for outputting alternating current to the load device and measuring an actual alternating current value by the electric quantity transmitter calibrating device;

the output end of the detected device is connected with the input end of the electric quantity transmitter calibrating device, the detected device is used for outputting direct current to the electric quantity transmitter calibrating device, so that the electric quantity transmitter calibrating device measures the current value of the direct current to obtain a measured current value, and the detected device is a direct current constant current source;

the processor is connected with the electric quantity transmitter calibrating device, and the processor is used for determining the current value of the direct current based on the current value of the alternating current and the input standard current value of the electric quantity transmitter calibrating device, and determining the stability of the electric quantity transmitter calibrating device based on the current value of the direct current and the measured current value.

In a second aspect, an embodiment of the present application provides a method for determining stability of a calibration apparatus for a power transmitter, where the method is applied to the apparatus for determining stability of a calibration apparatus for a power transmitter in the first aspect, and includes:

starting the detected device for multiple times to enable the detected device to output direct current to the electric quantity transmitter calibrating device for multiple times, wherein the detected device is a direct current constant current source;

starting the electric quantity transmitter calibrating device for multiple times, so that the electric quantity transmitter calibrating device sequentially measures the current values of the direct current output by the detected device for multiple times to obtain a plurality of corresponding measured current values;

the processor determines the stability of the electrical quantity transmitter calibrating device based on the plurality of measured current values.

In a third aspect, an embodiment of the present application provides another device for determining stability of a calibration device for a power transmitter, including the device for determining stability of a calibration device for a power transmitter in the first aspect, including:

the starting unit is used for starting the detected device for multiple times so that the detected device outputs direct current to the electric quantity transmitter calibrating device for multiple times, wherein the detected device is a direct current constant current source;

the first measuring unit is used for starting the electric quantity transmitter calibrating device for multiple times, so that the electric quantity transmitter calibrating device sequentially measures the current values of the direct current output by the device to be detected for multiple times, and a plurality of corresponding measured current values are obtained;

and the determining unit is used for determining the stability of the electric quantity transmitter calibrating device based on the plurality of measured current values by the processor.

In a fourth aspect, an embodiment of the present application provides an electronic device, including:

a processor; and

a memory arranged to store computer executable instructions that, when executed, cause the processor to:

starting the detected device for multiple times to enable the detected device to output direct current to the electric quantity transmitter calibrating device for multiple times, wherein the detected device is a direct current constant current source;

starting the electric quantity transmitter calibrating device for multiple times, so that the electric quantity transmitter calibrating device sequentially measures the current values of the direct current output by the detected device for multiple times to obtain a plurality of corresponding measured current values;

the processor determines the stability of the electrical quantity transmitter calibrating device based on the plurality of measured current values.

In a fifth aspect, embodiments of the present application provide a computer-readable storage medium storing one or more programs that, when executed by an electronic device that includes a plurality of application programs, cause the electronic device to perform operations comprising:

starting the detected device for multiple times to enable the detected device to output direct current to the electric quantity transmitter calibrating device for multiple times, wherein the detected device is a direct current constant current source;

starting the electric quantity transmitter calibrating device for multiple times, so that the electric quantity transmitter calibrating device sequentially measures the current values of the direct current output by the detected device for multiple times to obtain a plurality of corresponding measured current values;

the processor determines the stability of the electrical quantity transmitter calibrating device based on the plurality of measured current values.

In this application embodiment, the device for determining the stability of the power transmitter calibrating device comprises the power transmitter calibrating device, a detected device, a processor and a load device, wherein: the output end of the electric quantity transmitter calibrating device is connected with the input end of the load device; the electric quantity transducer calibrating device is used for outputting alternating current to the load device and measuring an actual alternating current value by the electric quantity transducer calibrating device; the output end of the detected device is connected with the input end of the electric quantity transmitter calibrating device, the detected device is used for outputting direct current to the electric quantity transmitter calibrating device, the electric quantity transmitter calibrating device measures the current value of the direct current to obtain a measured current value, and the detected device is a direct current constant current source; the processor is connected with the electric quantity transmitter calibrating device and used for determining the current value of the direct current based on the current value of the alternating current and the input standard current value of the electric quantity transmitter calibrating device and determining the stability of the electric quantity transmitter calibrating device based on the current value and the measured current value of the direct current.

Therefore, the detected device is a direct current constant current source and can output direct current with constant current value, so that the detected device has good stability, the electric quantity transmitter calibrating device cannot be interfered by other devices or equipment when measuring the current value, the current value obtained by the electric quantity transmitter calibrating device can truly reflect the stability of the electric quantity transmitter calibrating device, and the accuracy of the stability measuring result of the electric quantity transmitter calibrating device is improved.

Drawings

Fig. 1 is a schematic structural diagram of a stability determining apparatus for a calibration apparatus of a power transmitter according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a no-load device of the stability determination device for the verification device of the electrical quantity transmitter according to the embodiment of the present application;

fig. 3 is a schematic structural diagram of a specific structure of a stability determination device for a calibration device of an electrical quantity transmitter according to an embodiment of the present application;

fig. 4 is a schematic flow chart of an implementation of a method for determining stability of a calibration apparatus of a power transmitter according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of another apparatus for determining stability of a calibration apparatus for a power transmitter according to an embodiment of the present disclosure;

fig. 6 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. 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 application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The following describes in detail a determination device for determining stability of a calibration device for a power transmitter and a method thereof according to an embodiment of the present application through specific embodiments and application scenarios thereof with reference to the accompanying drawings.

The embodiment of the application provides a confirming device of electric quantity transmitter calibrating installation stability, include electric quantity transmitter calibrating installation, examine device, treater and load device, wherein: the output end of the electric quantity transmitter calibrating device is connected with the input end of the load device; the electric quantity transducer calibrating device is used for outputting alternating current to the load device and measuring an actual alternating current value by the electric quantity transducer calibrating device; the output end of the detected device is connected with the input end of the electric quantity transmitter calibrating device, the detected device is used for outputting direct current to the electric quantity transmitter calibrating device, the electric quantity transmitter calibrating device measures the current value of the direct current to obtain a measured current value, and the detected device is a direct current constant current source; the processor is connected with the electric quantity transmitter calibrating device and used for determining the current value of the direct current based on the current value of the alternating current and the input standard current value of the electric quantity transmitter calibrating device and determining the stability of the electric quantity transmitter calibrating device based on the current value and the measured current value of the direct current.

Therefore, the detected device is a direct current constant current source and can output direct current with constant current value, so that the detected device has good stability, the electric quantity transmitter calibrating device cannot be interfered by other devices or equipment when measuring the current value, the current value obtained by the electric quantity transmitter calibrating device can truly reflect the stability of the electric quantity transmitter calibrating device, and the accuracy of the stability measuring result of the electric quantity transmitter calibrating device is improved.

Fig. 1 is a schematic structural diagram of a device for determining stability of a calibration device for a power transmitter according to an embodiment of the present disclosure. The device includes: electric quantity transmitter calibrating installation 101, examined device 102 and processor 103, wherein:

the output end of the electric quantity transmitter calibrating device 101 is connected with the input end of the load device 104; the electric quantity transmitter calibrating device 101 is used for outputting alternating current to the load device 104, and the actual alternating current value is measured by the electric quantity transmitter calibrating device 101;

the output end of the detected device 102 is connected with the input end of the electric quantity transmitter calibrating device 101, the detected device 102 is used for outputting direct current to the electric quantity transmitter calibrating device 101, so that the electric quantity transmitter calibrating device 101 measures the current value of the direct current to obtain a measured current value, and the detected device 102 is a direct current constant current source;

the processor 103 is connected to the transmitter verification device 101, and the processor 103 is configured to determine a current value of the dc current based on a current value of the ac current and an input standard current value of the transmitter verification device 101, and determine the stability of the transmitter verification device 101 based on the current value of the dc current and the measured current value.

It should be appreciated that the transmitter verification device 101 may include a display unit for displaying the input and output current values measured by the transmitter verification device 101. And the processor 103 may be independent of the transmitter calibrator 101 or may be disposed within the transmitter calibrator 101.

Optionally, in order to simulate an application scenario of the calibration device 101 for the power transmitter with lower measurement accuracy, so that the stability of the calibration device 101 for the power transmitter determined in the embodiment of the present application is more accurate, and the stability of the calibration device 101 for the power transmitter does not change due to a change in the application scenario, the load device 104 may be a suitable load such as the power transmitter with lower accuracy in an actual measurement scenario, and thus, the load device 104 can receive an alternating current from the calibration device 101 for the power transmitter; the transmitter verification device 101 can detect the effective current value of the alternating current actually output by the transmitter verification device 101 after being influenced by the load device 104.

Because the stability of the load device 104 may be poor, the output terminal of the load device 104 may be disconnected from the input terminal of the transmitter verification device 101 to ignore the redundancy parameter of the output current value of the load device 104.

Optionally, as shown in fig. 2, the specific structural diagram of a no-load device of the device for determining the stability of the power transmitter verification apparatus provided in the embodiment of the present application is a schematic diagram, so that the method provided in the embodiment of the present application can still be implemented under the condition of saving equipment, so that the alternating current output by the power transmitter verification apparatus 101 can normally circulate based on a circuit loop, the current output end of the power transmitter verification apparatus 101 can be short-circuited, and the voltage output end is open-circuited, so that a loop can be formed without adding an additional device or equipment.

It should be understood that, in the prior art, when determining the stability of the power transmitter calibrating device 101, the stability of the power transmitter with low accuracy is not good enough, the current value obtained by the power transmitter calibrating device 101 when measuring the power transmitter with low accuracy is not stable enough, and the result obtained by determining the stability of the power transmitter calibrating device 101 is not accurate.

Therefore, the device 102 to be tested in the device provided by the embodiment of the present application may be a dc constant current source, and the current value output by the dc constant current source is stable, so as to greatly eliminate redundant interference generated by instability of the load device 104 itself on the determination result of the stability of the power transmitter verification device 101.

Specifically, when the device 102 to be tested is a dc constant current source, the device 102 to be tested is an adjustable current source and is powered by a dc battery, so that the device 102 to be tested does not need to be connected to another power source, and the output terminal of the device 102 to be tested can directly output a dc current to the transmitter verification device 101.

It should be understood that the processor 103 may be used for various logical operations in the embodiments of the present application. Specifically, the processor 103 stores therein the limit of the electrical quantity transmitter verification device 101, the input standard current value, the output standard current value, and the linear relationship between the input standard current value and the output standard current value. The processor 103 may obtain a current value of the alternating current output by the power transmitter verification device 101 from the power transmitter verification device 101, and calculate a corresponding current value of the direct current output by the device under test 102.

In addition, the processor 103 may also determine the stability of the transmitter verification device 101 based on the current value of the dc current and a measured current value measured by the transmitter verification device 101.

Optionally, as shown in fig. 3, the specific structural diagram of the device for determining the stability of the verification device for an electrical quantity transmitter provided in the embodiment of the present application is shown. As an example, in fig. 3, the power transmitter verification device 101 may be a power transmitter verification device with a model TD4500 and a precision of 0.05, and the device under test 102 may be a dc constant current source with a model flu 707 loopcalibration.

In addition, it is only necessary to ensure that the output of the transmitter verification device 101 forms a loop with the load or itself. One embodiment provided by the present application is to connect the output of the transmitter verification device 101 to a 0.2 level accuracy transmitter 104. The accuracy value of the electric quantity transmitter calibration device 101 with the accuracy of 0.05 grade is higher than that of the electric quantity transmitter 104 with the accuracy of 0.2 grade, and the electric quantity transmitter 104 with the accuracy of 0.2 grade is only an example and can be replaced by other devices or equipment which can be used for forming a loop and meet the load requirement of the electric quantity transmitter calibration device.

In order to solve the problem that the determination result of the stability of the electric quantity transmitter calibration device in the prior art is inaccurate, the embodiment of the application further provides a method for determining the stability of the electric quantity transmitter calibration device.

It should be noted that, in the method for determining the stability of the calibration device for a power transmitter provided in the embodiment of the present application, the execution main body may be a device for determining the stability of the calibration device for a power transmitter, or a control module in the device for determining the stability of the calibration device for a power transmitter, which is used for executing the method for determining the stability of the calibration device for a power transmitter. The method for determining the stability of the power transmitter calibration device by using the determination device for determining the stability of the power transmitter calibration device in the embodiment of the present application as an example is used to describe the determination device for determining the stability of the power transmitter calibration device provided in the embodiment of the present application.

The following describes in detail an implementation process of the method with reference to a schematic flow chart of a specific implementation of the method for determining the stability of the calibration device of the power transmitter shown in fig. 4, and includes:

step 401, starting the detected device for multiple times, so that the detected device outputs direct current to the electric quantity transmitter calibrating device for multiple times;

the device to be detected may be a device or equipment with stable output, such as a dc constant current source.

It should be understood that, in a general case, if the repeatability of the calibration device of the electric quantity transmitter is higher, the stability of the calibration device of the electric quantity transmitter is correspondingly higher. Therefore, in order to determine whether the stability of the calibration device of the power transmitter meets the preset requirement based on the repeatability of the calibration device of the power transmitter, it is necessary to obtain the measurement precision of the calibration device of the power transmitter under a set of repeated measurement conditions, wherein the repeated measurement conditions refer to a set of measurement conditions that are the same measurement program, the same operator, the same measurement system, the same operation condition and the same place, and are repeatedly measured on the same or similar operated objects in a short time.

Therefore, the embodiment of the application can repeatedly output the direct current to the electric quantity transmitter calibrating device for multiple times under the same measuring condition by starting the detected device for multiple times.

Specifically, before the device to be detected is started for multiple times and the device to be detected outputs the direct current to the electric quantity transmitter calibrating device for multiple times, the method provided by the embodiment of the present application further includes:

the electric quantity transmitter calibrating device sequentially measures the current values of the alternating current output by the electric quantity transmitter calibrating device to obtain a plurality of current values of the alternating current;

the processor sequentially determines a plurality of current values of the direct current based on the plurality of current values of the alternating current, the input standard current value of the electricity quantity transmitter verification device, and a linear relationship between the input standard current value and the output standard current value of the electricity quantity transmitter verification device.

TABLE 1 output standard current value of electric quantity transducer calibrating device and corresponding input standard current value table

Optionally, in order to simulate a scenario in which the electric quantity transmitter calibrating device measures the electric quantity transmitter, in the method provided in the embodiment of the present application, a current value of an alternating current output by the electric quantity transmitter calibrating device and a current value of a direct current output by the device to be tested may satisfy a linear relationship between an output standard current value and an input standard current value in table 1.

Specifically, as shown in table 1, the output standard current value table is an output standard current value table of the electric quantity transmitter calibrating device and a corresponding input standard current value table. The correspondence between the output standard current value and the input standard current value in table 1 is a correspondence between the output standard current value and the input standard current value of the power transmitter, which is specified by the national power transmitter standard.

Assuming that the output standard current value of the electric quantity transmitter calibrating device is I_{Standard outlet}The input standard current value of the electric quantity transducer calibrating device is I_{Standard access}Then I_{Standard outlet}And I_{Standard access}The linear relationship of (a) can be expressed as follows:

I_{standard access}＝0.0032I_{Standard outlet}+4 (1)

Corresponding the current value of the alternating current output by the electric quantity transmitter calibrating device to I in formula (1)_{Standard outlet}And the current value of the DC current output by the detected device is corresponding to I in the formula (1)_{Standard access}And then, calculating to obtain the current value of the direct current capable of controlling the output of the detected device according to the formula (1) and the current value of the alternating current output by the electric quantity transmitter calibrating device. In addition, since the output of the device under test itself is stable, it can be regarded that the current value actually output matches the current value for controlling the output. Therefore, the current value output by the electric quantity transmitter calibrating device and the current value output by the detected device can be ensured to accord with the input and output standards of the electric quantity transmitter.

It should be understood that the current value of the alternating current output by the verification device of the power transmitter refers to the effective value of the alternating current, and the above table 1 and the formula (1) are only examples, and the specific content can be adjusted according to the power transmitter in practical application.

Optionally, when the detected device is started for multiple times, the electric quantity transmitter calibrating device can be started for multiple times simultaneously, so that the detected device and the electric quantity transmitter calibrating device can output corresponding currents simultaneously, and the processor can acquire a value required for determining the stability of the electric quantity transmitter calibrating device in time.

Step 402, starting the electric quantity transmitter calibrating device for multiple times, so that the electric quantity transmitter calibrating device sequentially measures the current values of the direct current output by the device to be tested for multiple times, and obtaining a plurality of corresponding measured current values;

it should be understood that in order to ensure that each measurement is performed under repetitive conditions, the electrical quantity transmitter verification device may be simultaneously started each time the device under test is started, and likewise, after each measurement is completed, the device under test and the electrical quantity transmitter verification device may be simultaneously shut down, or the states of the device under test and the electrical quantity transmitter verification device may be returned to the initial state before the measurement. This enables the current value to be measured in a scientific way a number of times under repetitive conditions.

And when the detected device outputs the direct current each time, the electric quantity transmitter calibrating device can measure the current value of the direct current once each time, so that under the condition of obtaining the current values for multiple times, the direct current can be measured to obtain a plurality of measured current values, wherein the current values of the direct current output by the detected device correspond to the measured current values one by one in sequence.

Step 303, the processor determines the stability of the calibration device of the electrical quantity transmitter based on the plurality of measured current values.

Optionally, in order to determine the stability of the power transmitter calibrating device, a measured current value measured by the power transmitter calibrating device may be determined, an expected dc current value corresponding to the measured current value is obtained, a difference between the expected dc current value and a current value of a dc current actually output by the device under test is calculated, and then whether the power transmitter calibrating device is stable is determined based on the difference.

Specifically, in the method provided by the embodiment of the present application, the processor determines the stability of the verification device for the power transmitter based on a plurality of measured current values, including:

the processor sequentially determines a plurality of difference values between the plurality of measured current values and the plurality of current values of the direct current based on the plurality of measured current values and the plurality of current values of the direct current, wherein the plurality of measured current values correspond to the plurality of current values of the direct current in sequence one-to-one correspondence;

the processor determines a plurality of errors corresponding to the plurality of difference values based on the plurality of difference values and the measuring range of the electric quantity transmitter calibrating device, and the errors are expressed in a mode of error introduction;

the processor determines the stability of the calibration device of the power transmitter based on the plurality of errors.

As an example, first, based on the data in table 1 and equation (1), if the power transmitter verification device is controlled to output a current with a current value of 4.000A, the corresponding input dc standard current value may be 16.800mA, whereas if the current value of the ac current actually output by the power transmitter verification device is 4.004A, the expected current value of the dc current output by the device under test calculated according to the linear relationship is 16.813 mA.

Here, the measured current value measured by the electrical quantity transmitter verification apparatus is 16.800mA, the difference between the measured current value and the expected current value of the direct current output by the device to be detected is 16.800mA-16.813 mA-0.013 mA, and the error value is calculated by referring to the following formula:

where γ represents an error value calculated by referencing the error, Δ I represents a difference between the measured current value and an expected current value of the direct current output from the device under test, and I represents a difference between the measured current value and the expected current value_MAXRepresents the upper limit of measurement, I, set by the calibration device of the electrical quantity transmitter_MINRepresents the lower measurement limit of the calibration device of the electric quantity transmitter, wherein I_MAXAnd I_MINThe characteristic parameters of the isoelectric transducer are all required to be input into the control software of the electrical transducer calibrating device so as to realize the calculation of the error value gamma.

Finally, based on the data in Table 1 and equation (2), I_MAXIs 20.000mA, I_MINAt 4.000mA, then when Δ I is-0.013 mA as described above, the corresponding error value γ is approximately 0.08125%. And based onThe method described above may result in a plurality of error values calculated by referencing the error.

Optionally, since the obtained plurality of errors are not intuitive enough and cannot be directly used for representing the stability of the power transmitter calibration device, the standard deviation of the plurality of errors can be further calculated, so that whether the power transmitter calibration device is stable or not can be determined through simple numerical comparison.

Specifically, in the method provided by the embodiment of the present application, the processor determines the stability of the calibration apparatus for the power transmitter based on a plurality of errors, including:

the processor obtains a standard deviation of the plurality of errors based on the plurality of errors;

if the standard deviation is smaller than the preset deviation, determining that the stability of the electric quantity transmitter calibrating device meets the preset requirement;

and if the standard deviation is greater than or equal to the preset deviation, determining that the stability of the electric quantity transmitter calibrating device does not meet the preset requirement.

The preset requirements can be set according to the metering rules, and different preset deviations can be set according to the metering rules, so that the aim of setting different preset requirements on the calibrating devices of different grades is fulfilled. And, the calculation formula of the standard deviation may be as follows:

wherein S represents the standard deviation of the plurality of errors, x_iWhich indicates the (i) th error,

represents the average of all errors, and n represents the total number of errors.

In addition, the preset deviation may be preset according to the rule, and in the embodiment, the preset deviation may be set to 0.005%.

In this application embodiment, the device for determining the stability of the power transmitter calibrating device comprises the power transmitter calibrating device, a detected device, a processor and a load device, wherein: the output end of the electric quantity transmitter calibrating device is connected with the input end of the load device; the electric quantity transducer calibrating device is used for outputting alternating current to the load device and measuring an actual alternating current value by the electric quantity transducer calibrating device; the output end of the detected device is connected with the input end of the electric quantity transmitter calibrating device, the detected device is used for outputting direct current to the electric quantity transmitter calibrating device, the electric quantity transmitter calibrating device measures the current value of the direct current to obtain a measured current value, and the detected device is a direct current constant current source; the processor is connected with the electric quantity transmitter calibrating device and used for determining the current value of the direct current based on the current value of the alternating current and the input standard current value of the electric quantity transmitter calibrating device and determining the stability of the electric quantity transmitter calibrating device based on the current value and the measured current value of the direct current.

Therefore, the stability of the detected device is good, so that the electric quantity transmitter calibrating device cannot be interfered by other devices or equipment when measuring the current value, the stability of the electric quantity transmitter calibrating device can be truly reflected by the current value measured by the electric quantity transmitter calibrating device, and the accuracy of the stability measuring result of the electric quantity transmitter calibrating device is improved.

The embodiment of the present application further provides a device 500 for determining stability of a calibration device of an electrical quantity transmitter, as shown in fig. 5, including:

a first starting unit 501, configured to start a device to be detected multiple times, so that the device to be detected outputs a direct current to an electric quantity transmitter calibration device multiple times, where the device to be detected is a direct current constant current source;

a second starting unit 502, configured to start the electric quantity transmitter calibration apparatus for multiple times, so that the electric quantity transmitter calibration apparatus sequentially measures current values of the direct current output by the device to be tested for multiple times, and obtains multiple corresponding measured current values;

a determining unit 503, configured to determine, by the processor, stability of the calibration apparatus for the electrical quantity transmitter based on the plurality of measured current values.

Optionally, in an embodiment, the apparatus further includes:

the measuring unit 504 is used for sequentially measuring the current values of the alternating current output by the electric quantity transmitter calibrating device to obtain a plurality of current values of the alternating current;

the processor sequentially determines the plurality of current values of the direct current based on the plurality of current values of the alternating current, the input standard current value of the electric quantity transmitter calibrating device and a linear relation between the input standard current value and the output standard current value of the electric quantity transmitter calibrating device.

Optionally, in an embodiment, the determining unit 503 is configured to:

the processor sequentially determines a plurality of difference values between the plurality of measured current values and the plurality of current values of the direct current based on the plurality of measured current values and the plurality of current values of the direct current, wherein the plurality of measured current values correspond to the plurality of current values of the direct current in sequence one-to-one correspondence;

the processor determines a plurality of errors corresponding to the plurality of difference values based on the plurality of difference values and the measuring range of the electric quantity transmitter calibrating device, wherein the errors are expressed by means of error reference;

and the processor determines the stability of the electric quantity transmitter calibrating device based on the plurality of errors.

Optionally, in an embodiment, the determining unit 503 is configured to:

the processor obtains a standard deviation of the plurality of errors based on the plurality of errors;

if the standard deviation is smaller than a preset deviation, determining that the stability of the electric quantity transmitter calibrating device meets a preset requirement;

and if the standard deviation is greater than or equal to the preset deviation, determining that the stability of the electric quantity transmitter calibrating device does not meet the preset requirement.

The device for determining the stability of the calibration device of the power transmitter in the embodiment of the application can be a device, and can also be a component, an integrated circuit or a chip in a terminal. The device can be mobile electronic equipment or non-mobile electronic equipment. By way of example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and the non-mobile electronic device may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine or a self-service machine, and the like, and the embodiments of the present application are not particularly limited.

The device for determining the stability of the calibration device of the power transmitter in the embodiment of the application can be a device with an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, and embodiments of the present application are not limited specifically.

The device for determining the stability of the power transmitter calibration device provided by the embodiment of the application can realize each process realized by the device for determining the stability of the power transmitter calibration device in the method embodiment of fig. 4, and is not repeated here for avoiding repetition.

In this application embodiment, the device for determining the stability of the power transmitter calibrating device comprises the power transmitter calibrating device, a detected device, a processor and a load device, wherein: the output end of the electric quantity transmitter calibrating device is connected with the input end of the load device; the electric quantity transducer calibrating device is used for outputting alternating current to the load device and measuring an actual alternating current value by the electric quantity transducer calibrating device; the output end of the detected device is connected with the input end of the electric quantity transmitter calibrating device, the detected device is used for outputting direct current to the electric quantity transmitter calibrating device, the electric quantity transmitter calibrating device measures the current value of the direct current to obtain a measured current value, and the detected device is a direct current constant current source; the processor is connected with the electric quantity transmitter calibrating device and used for determining the current value of the direct current based on the current value of the alternating current and the input standard current value of the electric quantity transmitter calibrating device and determining the stability of the electric quantity transmitter calibrating device based on the current value and the measured current value of the direct current.

Therefore, the detected device is a direct current constant current source and can output direct current with constant current value, so that the detected device has good stability, the electric quantity transmitter calibrating device cannot be interfered by other devices or equipment when measuring the current value, the current value obtained by the electric quantity transmitter calibrating device can truly reflect the stability of the electric quantity transmitter calibrating device, and the accuracy of the stability measuring result of the electric quantity transmitter calibrating device is improved.

Fig. 6 is a schematic structural diagram of an electronic device provided in an embodiment of the present specification. Referring to fig. 6, at a hardware level, the electronic device includes a processor, and optionally further includes an internal bus, a network interface, and a memory. The Memory may include a Memory, such as a Random-Access Memory (RAM), and may further include a non-volatile Memory, such as at least 1 disk Memory. Of course, the electronic device may also include hardware required for other services.

The processor, the network interface, and the memory may be connected to each other via an internal bus, which may be an ISA (Industry Standard Architecture) bus, a PCI (peripheral component Interconnect) bus, an EISA (Extended Industry Standard Architecture) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one double-headed arrow is shown in FIG. 6, but that does not indicate only one bus or one type of bus.

And the memory is used for storing programs. In particular, the program may include program code comprising computer operating instructions. The memory may include both memory and non-volatile storage and provides instructions and data to the processor.

And the processor reads the corresponding computer program from the nonvolatile memory into the memory and runs the computer program to form a device for determining the stability of the power transmitter calibrating device on a logic level. The processor is used for executing the program stored in the memory and is specifically used for executing the following operations:

starting the detected device for multiple times to enable the detected device to output direct current to the electric quantity transmitter calibrating device for multiple times, wherein the detected device is a direct current constant current source;

starting the electric quantity transmitter calibrating device for multiple times, so that the electric quantity transmitter calibrating device sequentially measures the current values of the direct current output by the detected device for multiple times to obtain a plurality of corresponding measured current values;

the processor determines the stability of the electrical quantity transmitter calibrating device based on the plurality of measured current values.

The method for determining the stability of the calibration device for the power transmitter according to the embodiment shown in fig. 4 of the present specification can be applied to or implemented by a processor. The processor may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components. The various methods, steps and logic blocks disclosed in one or more embodiments of the present specification may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with one or more embodiments of the present disclosure may be embodied directly in hardware, in a software module executed by a hardware decoding processor, or in a combination of the hardware and software modules executed by a hardware decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

The electronic device may further execute the method for determining the stability of the calibration apparatus for an electrical quantity transmitter in fig. 4, which is not described herein again.

Of course, besides the software implementation, the electronic device in this specification does not exclude other implementations, such as logic devices or a combination of software and hardware, and the like, that is, the execution subject of the following processing flow is not limited to each logic unit, and may also be hardware or logic devices.

In short, the above description is only a preferred embodiment of the present disclosure, and is not intended to limit the scope of the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of one or more embodiments of the present disclosure should be included in the scope of protection of one or more embodiments of the present disclosure.

The systems, devices, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. One typical implementation device is a computer. In particular, the computer may be, for example, a personal computer, a laptop computer, a cellular telephone, a camera phone, a smartphone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.

Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.

It should be noted that, in this document, 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 like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.