CN111722170B - Device and method for determining stability of calibrating device of electric quantity transmitter and electronic equipment - Google Patents
Device and method for determining stability of calibrating device of electric quantity transmitter and electronic equipment Download PDFInfo
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- CN111722170B CN111722170B CN202010599032.3A CN202010599032A CN111722170B CN 111722170 B CN111722170 B CN 111722170B CN 202010599032 A CN202010599032 A CN 202010599032A CN 111722170 B CN111722170 B CN 111722170B
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Abstract
The application discloses a method for determining stability of an electric quantity transmitter calibrating device and electronic equipment, and belongs to the technical field of electric quantity transmitters. The method comprises the following steps: starting a detected device for a plurality of times, so that the detected device outputs direct current to an electric quantity transducer calibrating device for a plurality of times, wherein the detected device is a direct current constant current source; starting the electric quantity transmitter calibrating device for a plurality of times, so that the electric quantity transmitter calibrating device sequentially measures the current values of the direct current which is output by the detected device for a plurality of times, and obtaining a plurality of corresponding measured current values; the processor determines a stability of the power transmitter verification device based on the plurality of measured current values.
Description
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 accuracy of the measurement of the electric quantity transmitter, a high-precision electric quantity transmitter calibrating device is generally adopted to calibrate the low-precision electric quantity transmitter according to the technical specification of the measurement of the people's republic of China.
However, repeatability and stability of the calibration device of the electric quantity transmitter greatly affect the calibration result of the electric quantity transmitter, wherein repeatability refers to measurement precision under a set of repeatability conditions, and stability refers to the constant ability of a measurement standard to maintain its measurement characteristics over time (taken from the measurement Standard assessment Specification of the measurement Specification of the people's republic of China). Therefore, the calibrating device of the electric quantity transmitter is required to be calibrated, the metering technical performance of the electric quantity transmitter can be ensured to meet the requirement of a metering rule only after the calibrating device is qualified, and the quantity value transmission work of the low-grade electric quantity transmitter or the quantity value tracing work of the low-grade electric quantity transmitter can be carried out after the calibrating device is qualified.
In the process of implementing the present application, the inventor finds that at least the following problems exist in the prior art: because the stability of the electric quantity transmitter with lower precision is poor, when the electric quantity transmitter with higher verification precision is adopted as the electric quantity transmitter verification device, the data measured by the electric quantity transmitter verification device with higher precision can be influenced, and a result of poor stability of the electric quantity transmitter verification device with higher precision is generated, and is inaccurate.
Disclosure of Invention
The embodiment of the application aims to provide a device and a method for determining stability of an electric quantity transmitter calibrating device and electronic equipment, and the device and the method can solve the problem that the determination result of the stability of the electric quantity transmitter calibrating device in the prior art is inaccurate.
In order to solve the technical problems, the application is realized as follows:
in a first aspect, embodiments of the present application provide a device for determining stability of an electrical quantity transmitter calibration device, including an electrical quantity transmitter calibration device, a device under test, a processor, and a load device, wherein:
the output end of the electric quantity transducer 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 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 transducer calibrating device, the detected device is used for outputting direct current to the electric quantity transducer calibrating device, so that the electric quantity transducer 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 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 an electrical quantity transmitter calibration device, where the method is applied to the apparatus for determining stability of an electrical quantity transmitter calibration device in the first aspect, including:
starting a detected device for a plurality of times, so that the detected device outputs direct current to an electric quantity transducer calibrating device for a plurality of times, wherein the detected device is a direct current constant current source;
starting the electric quantity transmitter calibrating device for a plurality of times, so that the electric quantity transmitter calibrating device sequentially measures the current values of the direct current which is output by the detected device for a plurality of times, and obtaining a plurality of corresponding measured current values;
the processor determines a stability of the power transmitter verification device based on the plurality of measured current values.
In a third aspect, an embodiment of the present application provides a device for determining stability of a calibration device of an electric quantity transmitter, including the device for determining stability of a calibration device of an electric quantity transmitter in the first aspect, including:
The starting unit is used for starting the detected device for a plurality of times, so that the detected device outputs direct current to the electric quantity transducer calibrating device for a plurality of 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 a plurality of times, so that the electric quantity transmitter calibrating device sequentially measures the current values of the direct current output by the detected device for a plurality of 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 verification 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 a detected device for a plurality of times, so that the detected device outputs direct current to an electric quantity transducer calibrating device for a plurality of times, wherein the detected device is a direct current constant current source;
starting the electric quantity transmitter calibrating device for a plurality of times, so that the electric quantity transmitter calibrating device sequentially measures the current values of the direct current which is output by the detected device for a plurality of times, and obtaining a plurality of corresponding measured current values;
The processor determines a stability of the power transmitter verification 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 comprising a plurality of application programs, cause the electronic device to:
starting a detected device for a plurality of times, so that the detected device outputs direct current to an electric quantity transducer calibrating device for a plurality of times, wherein the detected device is a direct current constant current source;
starting the electric quantity transmitter calibrating device for a plurality of times, so that the electric quantity transmitter calibrating device sequentially measures the current values of the direct current which is output by the detected device for a plurality of times, and obtaining a plurality of corresponding measured current values;
the processor determines a stability of the power transmitter verification device based on the plurality of measured current values.
In this application embodiment, the determining means of electric quantity transmitter calibrating installation stability, including electric quantity transmitter calibrating installation, device to be examined, treater and load device, wherein: the output end of the electric quantity transducer 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 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 transducer calibrating device, the detected device is used for outputting direct current to the electric quantity transducer calibrating device, so that the electric quantity transducer 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 transducer calibrating device, and the processor is used for determining the current value of direct current based on the current value of alternating current and the input standard current value of the electric quantity transducer calibrating device, and determining the stability of the electric quantity transducer calibrating device based on the current value of direct current and the measured current value.
Therefore, the detected device is a direct current constant current source and can output direct current with a constant current value, so that the stability of the detected device is good, the electric quantity transmitter calibrating device cannot be interfered by other devices or equipment when the current value is measured, the measured current value of 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 device for determining stability of a calibration device of an electric quantity transmitter according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a specific structure of a no-load device of a device for determining stability of an calibration device of an electric quantity transmitter according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a specific structure of a device for determining stability of an electrical quantity transmitter calibration device according to an embodiment of the present application;
fig. 4 is a schematic implementation flow chart of a method for determining stability of a calibration device of an electric quantity transmitter according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a device for determining stability of a calibration device of an electrical quantity transmitter according to an embodiment of the present application;
Fig. 6 is a schematic hardware structure of an electronic device according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The device and the method for determining the stability of the calibration device of the electric quantity transmitter provided by the embodiment of the application are described in detail through specific embodiments and application scenes thereof with reference to the accompanying drawings.
The embodiment of the application provides a determining device of electric quantity transmitter calibrating installation stability, including electric quantity transmitter calibrating installation, by examining device, treater and load device, wherein: the output end of the electric quantity transducer 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 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 transducer calibrating device, the detected device is used for outputting direct current to the electric quantity transducer calibrating device, so that the electric quantity transducer 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 transducer calibrating device, and the processor is used for determining the current value of direct current based on the current value of alternating current and the input standard current value of the electric quantity transducer calibrating device, and determining the stability of the electric quantity transducer calibrating device based on the current value of direct current and the measured current value.
Therefore, the detected device is a direct current constant current source and can output direct current with a constant current value, so that the stability of the detected device is good, the electric quantity transmitter calibrating device cannot be interfered by other devices or equipment when the current value is measured, the measured current value of 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 of an electric quantity transmitter according to an embodiment of the present application. The device comprises: an electrical quantity transmitter verification device 101, a device under test 102, and a processor 103, wherein:
the output end of the electric quantity transducer calibrating device 101 is connected with the input end of the load device 104; the electric quantity transducer calibrating device 101 is used for outputting alternating current to the load device 104, and the electric quantity transducer calibrating device 101 measures the actual alternating current value;
the output end of the detected device 102 is connected with the input end of the electric quantity transducer calibrating device 101, the detected device 102 is used for outputting direct current to the electric quantity transducer calibrating device 101, so that the electric quantity transducer 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 electric quantity transducer calibration device 101, and the processor 103 is configured to determine a current value of the direct current based on the current value of the alternating current and an input standard current value of the electric quantity transducer calibration device 101, and determine stability of the electric quantity transducer calibration device 101 based on the current value of the direct current and the measured current value.
It should be appreciated that the power transmitter verification device 101 may include a display unit for displaying the input current value and the output current value measured by the power transmitter verification device 101. And the processor 103 may be independent of the power transmitter verification device 101 or may be disposed within the power transmitter verification device 101.
Optionally, in order to simulate an application scenario of the electric quantity transmitter calibration device 101 in an electric quantity transmitter with lower measurement accuracy, the stability of the electric quantity transmitter calibration device 101 determined by the embodiment of the present application is more accurate, and the stability of the electric quantity transmitter calibration device 101 is not changed due to the change of the application scenario, and the load device 104 may be a suitable load such as an electric quantity transmitter with lower accuracy in an actual measurement scenario, so that the load device 104 can receive an ac current from the electric quantity transmitter calibration device 101; the power transmitter verification device 101 can detect an effective current value of the ac current actually output by the power transmitter verification device 101 after being affected by the load device 104.
Because the stability of the load device 104 may be poor, the output of the load device 104 may be disconnected from the input of the power transmitter calibration device 101 to ignore the redundant parameter of the output current value of the load device 104.
Optionally, as shown in fig. 2, a specific structural schematic diagram of a no-load device of a determining device for stability of an electric quantity transducer calibrating device according to an embodiment of the present application is provided, so that in order to still implement the method provided in the embodiment of the present application under the condition of saving equipment, an ac current output by the electric quantity transducer calibrating device 101 can be normally circulated based on a circuit loop, a current output end of the electric quantity transducer calibrating device 101 can be shorted, and a voltage output end is opened, so that a loop can be formed without adding additional devices or equipment.
It should be understood that, in the prior art, when determining the stability of the calibration device 101 for an electric quantity transmitter, the stability of the adopted electric quantity transmitter with lower precision is not good enough, the current value obtained by the calibration device 101 for an electric quantity transmitter with lower precision in measuring the electric quantity transmitter is correspondingly not stable enough, and the result obtained by determining the stability of the calibration device 101 for an electric quantity transmitter is inaccurate.
Therefore, the detected device 102 in the device provided by the embodiment of the application can be a direct current constant current source, and the current value output by the direct current constant current source is very stable, so that redundant interference generated by the unstable load device 104 to the determination result of the stability of the electric quantity transmitter verification device 101 is greatly eliminated.
Specifically, when the device under test 102 is a dc constant current source, the device under test 102 is an adjustable current source and is powered by a dc battery, so that the device under test 102 does not need to be connected to another power source, and the output terminal of the device under test 102 can directly output a dc current to the power transmitter calibration device 101.
It should be appreciated that the processor 103 may be used for various logical operations in embodiments of the present application. Specifically, the processor 103 stores therein the limit of the power transmitter calibration device 101, the input standard current value, the output standard current value, and the linear relationship of the input standard current value and the output standard current value. The processor 103 can obtain the current value of the alternating current output by the electric quantity transducer calibrating device 101 from the electric quantity transducer calibrating device 101, and calculate the current value of the direct current output by the corresponding detected device 102.
In addition, the processor 103 may also determine the stability of the power transmitter calibration device 101 based on the current value of the dc current and the measured current value measured by the power transmitter calibration device 101.
Optionally, as shown in fig. 3, a specific structural schematic diagram of a device for determining stability of an calibration device of an electric quantity transmitter according to an embodiment of the present application is shown. As an example, in fig. 3, the power transmitter calibration device 101 may be a power transmitter calibration device with a model TD4500 and a precision of 0.05, and the device under test 102 may be a direct current constant current source with a model FLUKE 707loop terminator.
In addition, the output of the power transmitter calibration device 101 is looped with the load or itself as long as it is ensured. One embodiment provided herein is to connect the output of the power transmitter calibration device 101 to the power transmitter 104 with a precision of 0.2 level. The accuracy value of the electric quantity transmitter calibration device 101 with the accuracy of 0.05 level is higher than the accuracy value of the electric quantity transmitter 104 with the accuracy of 0.2 level, and the electric quantity transmitter 104 with the accuracy of 0.2 level is just 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 calibrating device of the electric quantity transmitter in the prior art is inaccurate, the embodiment of the application also provides a determination method of the stability of the calibrating device of the electric quantity transmitter.
It should be noted that, in the method for determining the stability of the calibration device of the electric quantity transmitter provided in the embodiment of the present application, the execution body may be a device for determining the stability of the calibration device of the electric quantity transmitter, or a control module in the device for determining the stability of the calibration device of the electric quantity transmitter for executing the method for determining the stability of the calibration device of the electric quantity transmitter. In the embodiment of the application, a method for determining the stability of the calibration device of the electric quantity transmitter is taken as an example by using the determination device of the stability of the calibration device of the electric quantity transmitter, and the determination device of the stability of the calibration device of the electric quantity transmitter provided by the embodiment of the application is described.
The following describes the implementation process of the method in detail with reference to the schematic diagram of the implementation flow of the method for determining the stability of the calibration device of the electric quantity transmitter shown in fig. 4, which includes:
step 401, starting a detected device for a plurality of times, so that the detected device outputs direct current to an electric quantity transducer calibrating device for a plurality of times;
the device to be tested may be a device or equipment with stable output, such as a direct current constant current source.
It should be appreciated that in general, if the repeatability of the power transmitter calibration device is high, the stability is correspondingly high. Therefore, in order to determine whether the stability of the electric quantity transmitter calibration device meets the preset requirement based on the repeatability of the electric quantity transmitter calibration device, measurement precision of the electric quantity transmitter calibration device needs to be obtained under a set of repeatability measurement conditions, wherein the repeatability measurement conditions are a set of measurement conditions that are obtained by repeatedly measuring the same operated object or the same operated object in a short time, wherein the repeatability measurement conditions are the same measurement program, the same operator, the same measurement system, the same operation condition and the same place.
Therefore, the embodiment of the application can repeatedly output direct current to the electric quantity transmitter calibrating device for a plurality of times under the same measuring condition by starting the device to be detected for a plurality of times.
Specifically, before starting the inspected device for multiple times, so that the inspected device outputs the direct current to the electric quantity transducer calibration device for multiple times, the method provided by the embodiment of the application further comprises the following steps:
the method comprises the steps that an electric quantity transducer calibrating device sequentially measures current values of alternating current output by the electric quantity transducer 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 a linear relationship between the plurality of current values of the alternating current, the input standard current value of the power transmitter verification device, and the input standard current value and the output standard current value of the power transmitter verification device.
Table 1 output standard current value and corresponding input standard current value table for electric quantity transducer calibrating apparatus
Optionally, in order to simulate a scenario that the electric quantity transmitter calibrating device measures the electric quantity transmitter, in the method provided by the embodiment of the present application, the current value of the alternating current output by the electric quantity transmitter calibrating device and the current value of the direct current output by the detected device may satisfy the linear relationship between the output standard current value and the input standard current value in table 1.
Specifically, as shown in table 1, the present invention is an output standard current value and a corresponding input standard current value table of an electric quantity transmitter calibration device. The corresponding relation between the output standard current value and the input standard current value in table 1 is a corresponding relation between the output standard current value and the input standard current value of an electric quantity transmitter, which is specified by the national electric quantity transmitter standard.
Assume that the output standard current value of the electric quantity transmitter calibrating device is I Standard out Input standard current value of electric quantity transducer calibrating device is I Target access Then I Standard out And I Target access The linear relationship of (2) can be expressed as follows:
I target access ＝0.0032I Standard out +4 (1)
The current value of the alternating current output by the electric quantity transducer calibrating device is correspondingly I in the formula (1) Standard out And the current value of the direct current output by the tested device is correspondingly I in the formula (1) Target access Then, according to the formula (1) and the current value of the alternating current output by the calibration device of the electric quantity transducer, the current value of the direct current output by the device to be tested can be calculated. Further, since the output of the device under test itself is stable, it can be regarded that the current value actually output thereof coincides with the current value controlling the output thereof. Therefore, the current value output by the calibrating device of the electric quantity transmitter and the current value output by the detected device can be ensured, and the input and output standard of the electric quantity transmitter is met.
It should be understood that the current value of the ac current output by the power transmitter calibration device refers to the effective value of the ac current, and the above table 1 and formula (1) are only examples, and the specific content may be adjusted according to the power transmitter in practical applications.
Optionally, when the device to be detected is started for multiple times, the calibration device of the electric quantity transmitter can be started for multiple times at the same time, so that the device to be detected and the calibration device of the electric quantity transmitter can output corresponding currents at the same time, and the processor can acquire the value required for determining the stability of the calibration device of the electric quantity transmitter in time.
Step 402, starting the electric quantity transducer calibrating device for a plurality of times, so that the electric quantity transducer calibrating device sequentially measures the current values of the direct current output by the inspected device for a plurality of times, and a plurality of corresponding measured current values are obtained;
it should be appreciated that to ensure that each measurement is performed under repetitive conditions, the power transmitter verification device may be activated simultaneously each time the device under test is activated, and likewise, after each measurement is completed, the device under test and the power transmitter verification device are turned off simultaneously, or the state of the device under test and the power transmitter verification device is returned to the initial state prior to the measurement. This allows the current value to be measured several times in a scientific way under repetitive conditions.
And when the device to be detected outputs direct current every time, the electric quantity transducer calibrating device can measure the current value of the direct current every time, so that under the condition of obtaining the current value for many times, the direct current can be measured to obtain a plurality of measured current values, wherein the current value of the direct current output by the device to be detected corresponds to the measured current value in sequence one by one.
In step 303, the processor determines the stability of the power transmitter calibration device based on the plurality of measured current values.
Optionally, in order to determine the stability of the calibration device of the electric quantity transmitter, a measured current value measured by the calibration device of the electric quantity transmitter may be determined first, an expected direct current value corresponding to the measured current value is obtained, a difference value between the expected direct current value and a current value of a direct current actually output by the device to be tested is calculated, and then whether the calibration device of the electric quantity transmitter is stable is determined based on the difference value.
Specifically, in the method provided in the embodiments of the present application, the processor determines the stability of the calibration device of the electric quantity 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 and the sequence of the plurality of current values of the direct current are in one-to-one correspondence;
The processor determines a plurality of errors corresponding to the plurality of differences based on the plurality of differences and the measuring range of the electric quantity transducer calibrating device, and the errors are represented by referring to the errors;
the processor determines a stability of the power transmitter calibration device based on the plurality of errors.
As an example, first, based on the data in table 1 and equation (1), if the current value outputted by the calibration device of the electric quantity transmitter is controlled to be 4.000A, the corresponding input dc standard current value may be 16.800mA, however, the current value of the ac current actually outputted by the calibration device of the electric quantity transmitter is 4.004a, and the expected current value of the dc current outputted by the device to be tested calculated according to the linear relation is 16.813mA.
Here, the measured current value measured by the electric quantity transmitter calibration device is 16.800mA, and then the difference between the measured current value and the expected current value of the direct current output by the device under test is 16.800mA-16.813 ma= -0.013mA, and the formula for calculating the error value by referring to the error is as follows:
wherein, gamma represents an error value calculated by referencing the error, deltaI represents a difference between the measured current value and an expected current value of the DC current outputted by the device under test, I MAX Indicating the upper measurement limit set by the calibrating device of the electric quantity transmitter, I MIN Representing a lower measurement limit set by a power transmitter verification device, wherein I MAX And I MIN The characteristic parameters of the equal-electric-quantity transmitter are required to be input into control software of an electric-quantity transmitter calibrating device so as to realize calculation of an error value gamma.
Finally, based on the data in Table 1 and equation (2), I MAX 20.000mA, I MIN 4.000mA, then the corresponding error value γ is about 0.08125% when Δi is-0.013 mA as described above. And based on the above method, a plurality of error values calculated by the reference error can be obtained.
Alternatively, since the resulting plurality of errors are not intuitive enough to be directly used to represent the stability of the power transmitter calibration device, the standard deviation of the plurality of errors can be further calculated to enable a determination of whether the power transmitter calibration device is stable by simple numerical comparison.
Specifically, in the method provided in the embodiments of the present application, the processor determines the stability of the calibration device of the electric quantity transmitter based on a plurality of errors, including:
the processor obtains 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;
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 regulations, and different preset deviations can be set according to the metering regulations, so that the aim of setting different preset requirements for 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 a plurality of errors, x i Indicating the i-th error of the 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 a rule, and in this embodiment, the preset deviation may be set to 0.005%.
In this application embodiment, the determining means of electric quantity transmitter calibrating installation stability, including electric quantity transmitter calibrating installation, device to be examined, treater and load device, wherein: the output end of the electric quantity transducer 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 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 transducer calibrating device, the detected device is used for outputting direct current to the electric quantity transducer calibrating device, so that the electric quantity transducer 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 transducer calibrating device, and the processor is used for determining the current value of direct current based on the current value of alternating current and the input standard current value of the electric quantity transducer calibrating device, and determining the stability of the electric quantity transducer calibrating device based on the current value of direct current and the measured current value.
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 the electric quantity transmitter calibrating device measures 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 application also provides a device 500 for determining stability of a calibration device of an electric quantity transmitter, as shown in fig. 5, including:
a first starting unit 501, configured to start a device under test for multiple times, so that the device under test outputs a direct current to an electric quantity transducer calibration device for multiple times, where the device under test is a direct current constant current source;
the second starting unit 502 is configured to start the electric quantity transmitter calibration device for multiple times, so that the electric quantity transmitter calibration device sequentially measures current values of the direct current output by the device to be detected for multiple times, and obtains multiple corresponding measured current values;
a determining unit 503, configured to determine stability of the calibration device of the electric quantity transmitter based on the plurality of measured current values.
Optionally, in one embodiment, the apparatus further comprises:
A measurement unit 504, configured to sequentially measure current values of the ac current output by the electric quantity transducer calibration device by using the electric quantity transducer calibration device, so as to obtain a plurality of current values of the ac current;
the processor sequentially determines a plurality of current values of the direct current based on a linear relationship between the plurality of current values of the alternating current, an input standard current value of the power transmitter verification device, and an input standard current value and an output standard current value of the power transmitter verification device.
Optionally, in an embodiment, the determining unit 503 is configured to:
the processor sequentially determines a plurality of differences 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, the plurality of measured current values being in one-to-one correspondence with an order of the plurality of current values of the direct current;
the processor determines a plurality of errors corresponding to the plurality of differences based on the plurality of differences and the measuring range of the electric quantity transmitter calibrating device, wherein the errors are represented by a reference error mode;
the processor determines a stability of the power transmitter verification device based on the plurality of errors.
Optionally, in an embodiment, the determining unit 503 is configured to:
the processor obtains standard deviations 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 verification 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 verification device does not meet the preset requirement.
The device for determining the stability of the calibration device of the electric quantity 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 may be a mobile electronic device or a non-mobile electronic device. By way of example, the mobile electronic device may be a cell phone, tablet computer, notebook computer, palm computer, vehicle-mounted electronic device, wearable device, ultra-mobile personal computer (ultra-mobile personal computer, UMPC), netbook or personal digital assistant (personal digital assistant, PDA), etc., and the non-mobile electronic device may be a server, network attached storage (Network Attached Storage, NAS), personal computer (personal computer, PC), television (TV), teller machine or self-service machine, etc., and the embodiments of the present application are not limited in particular.
The device for determining stability of the calibration device of the electric quantity transmitter in the embodiment of the application can be a device with an operating system. The operating system may be an Android operating system, an ios operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.
The device for determining the stability of the calibration device of the electric quantity transmitter provided in the embodiment of the application can implement each process implemented by the device for determining the stability of the calibration device of the electric quantity transmitter in the embodiment of the method of fig. 4, and for avoiding repetition, the description is omitted here.
In this application embodiment, the determining means of electric quantity transmitter calibrating installation stability, including electric quantity transmitter calibrating installation, device to be examined, treater and load device, wherein: the output end of the electric quantity transducer 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 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 transducer calibrating device, the detected device is used for outputting direct current to the electric quantity transducer calibrating device, so that the electric quantity transducer 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 transducer calibrating device, and the processor is used for determining the current value of direct current based on the current value of alternating current and the input standard current value of the electric quantity transducer calibrating device, and determining the stability of the electric quantity transducer calibrating device based on the current value of direct current and the measured current value.
Therefore, the detected device is a direct current constant current source and can output direct current with a constant current value, so that the stability of the detected device is good, the electric quantity transmitter calibrating device cannot be interfered by other devices or equipment when the current value is measured, the measured current value of 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 according to an embodiment of the present disclosure. Referring to fig. 6, at the hardware level, the electronic device includes a processor, and optionally 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 (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, network interface, and memory may be interconnected by an internal bus, which may be an ISA (Industry Standard Architecture ) bus, a PCI (Peripheral Component Interconnect, peripheral component interconnect standard) bus, or EISA (Extended Industry Standard Architecture ) bus, among others. The buses may be classified as address buses, data buses, control buses, etc. For ease of illustration, only one bi-directional arrow is shown in FIG. 6, but not only one bus or type of bus.
And the memory is used for storing programs. In particular, the program may include program code including computer-operating instructions. The memory may include memory and non-volatile storage and provide instructions and data to the processor.
The processor reads the corresponding computer program from the nonvolatile memory to the memory and then runs the computer program to form a device for determining the stability of the electric quantity transducer verification device on a logic level. The processor is used for executing the programs stored in the memory and is specifically used for executing the following operations:
starting a detected device for a plurality of times, so that the detected device outputs direct current to an electric quantity transducer calibrating device for a plurality of times, wherein the detected device is a direct current constant current source;
starting the electric quantity transmitter calibrating device for a plurality of times, so that the electric quantity transmitter calibrating device sequentially measures the current values of the direct current which is output by the detected device for a plurality of times, and obtaining a plurality of corresponding measured current values;
the processor determines a stability of the power transmitter verification device based on the plurality of measured current values.
The method for determining the stability of the calibration device of the electric quantity transmitter disclosed in the embodiment shown in fig. 4 of the present specification can be applied to a processor or implemented by the 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 by instructions in the form of software. The processor may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), etc.; but also digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field programmable gate arrays (Field-Programmable Gate Array, FPGA) 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 description 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 a hardware decoding processor or in a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.
The electronic device may further execute the method for determining the stability of the calibration device of the electric quantity transmitter in fig. 4, which is not described herein.
Of course, in addition to the software implementation, the electronic device in this specification does not exclude other implementations, such as a logic device or a combination of software and hardware, that is, the execution subject of the following process is not limited to each logic unit, but may also be hardware or a logic device.
In summary, the foregoing description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, or the like, which is within the spirit and principles of one or more embodiments of the present disclosure, is intended to be included within the scope of one or more embodiments of the present disclosure.
The system, apparatus, module or unit set forth in the above embodiments may be implemented in particular by a computer chip or entity, or by a product having a certain function. One typical implementation is a computer. In particular, the computer may be, for example, a personal computer, a laptop computer, a cellular telephone, a camera phone, a smart phone, 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 storage media for a computer 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, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), including several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.
Claims (8)
1. The utility model provides a determining means of electric quantity changer calibrating installation stability which characterized in that, includes electric quantity changer calibrating installation, device to be examined, treater and load device, wherein:
the output end of the electric quantity transducer 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 the electric quantity transducer calibrating device is used for measuring the actual current value of the alternating current;
the output end of the detected device is connected with the input end of the electric quantity transducer calibrating device, the detected device is used for outputting direct current to the electric quantity transducer calibrating device, so that the electric quantity transducer 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 verification device, and is used for determining the current value of expected direct current based on the current value of alternating current and the input standard current value of the electric quantity transmitter verification device and determining the stability of the electric quantity transmitter verification device based on the current value of expected direct current and the measured current value;
The electric quantity transmitter verification device comprises a display unit, wherein the display unit is used for displaying the measured current value and the alternating current value measured by the electric quantity transmitter verification device.
2. A method for determining stability of an electrical quantity transmitter calibration device, the method being applied to the electrical quantity transmitter calibration device stability determination device of claim 1, comprising:
the method comprises the steps that an electric quantity transducer calibrating device sequentially measures current values of alternating current output by the electric quantity transducer calibrating device to obtain a plurality of current values of the alternating current;
the processor sequentially determines a plurality of current values of the expected direct current based on a linear relationship among the plurality of current values of the alternating current, the input standard current value of the electric quantity transmitter verification device, and the input standard current value and the output standard current value of the electric quantity transmitter verification device;
starting a detected device for a plurality of times, so that the detected device outputs direct current to an electric quantity transducer calibrating device for a plurality of times, wherein the detected device is a direct current constant current source;
starting the electric quantity transmitter calibrating device for a plurality of times, so that the electric quantity transmitter calibrating device sequentially measures the current values of the direct current which is output by the detected device for a plurality of times, and obtaining a plurality of corresponding measured current values;
The processor determines a stability of the power transmitter verification device based on the plurality of measured current values and the plurality of current values of the expected direct current.
3. The method of claim 2, wherein the processor determining the stability of the power transmitter verification device based on the plurality of measured current values and the plurality of current values of the expected direct current comprises:
the processor sequentially determining a plurality of differences between the plurality of measured current values and a plurality of current values of the expected direct current based on the plurality of measured current values and the plurality of current values of the expected direct current, the plurality of measured current values being in one-to-one correspondence with an order of the plurality of current values of the expected direct current;
the processor determines a plurality of errors corresponding to the plurality of differences based on the plurality of differences and the measuring range of the electric quantity transmitter calibrating device, wherein the errors are represented by a reference error mode;
the processor determines a stability of the power transmitter verification device based on the plurality of errors.
4. The method of claim 3, wherein the processor determining the stability of the power transmitter verification device based on the plurality of errors comprises:
The processor obtains standard deviations 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 verification 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 verification device does not meet the preset requirement.
5. A further apparatus for determining stability of a calibration device for an electrical quantity transmitter, comprising the apparatus for determining stability of a calibration device for an electrical quantity transmitter according to claim 1, comprising:
the second measuring unit is used for sequentially measuring the current value of the alternating current output by the electric quantity transducer calibrating device to obtain a plurality of current values of the alternating current;
the processor sequentially determines a plurality of current values of the expected direct current based on a linear relationship among the plurality of current values of the alternating current, the input standard current value of the electric quantity transmitter verification device, and the input standard current value and the output standard current value of the electric quantity transmitter verification device;
the first starting unit is used for starting the detected device for a plurality of times, so that the detected device outputs direct current to the electric quantity transducer calibrating device for a plurality of times, wherein the detected device is a direct current constant current source;
The second starting unit is used for starting the electric quantity transducer calibrating device for a plurality of times, so that the electric quantity transducer calibrating device sequentially measures the current values of the direct current output by the detected device for a plurality of times to obtain a plurality of corresponding measured current values;
and the determining unit is used for determining the stability of the electric quantity transducer verification device based on the plurality of measured current values and the plurality of current values of the expected direct current by the processor.
6. The apparatus of claim 5, wherein the determining unit is configured to:
the processor sequentially determining a plurality of differences between the plurality of measured current values and a plurality of current values of the expected direct current based on the plurality of measured current values and the plurality of current values of the expected direct current, the plurality of measured current values being in one-to-one correspondence with an order of the plurality of current values of the direct current;
the processor determines a plurality of errors corresponding to the plurality of differences based on the plurality of differences and the measuring range of the electric quantity transmitter calibrating device, wherein the errors are represented by a reference error mode;
the processor determines a stability of the power transmitter verification device based on the plurality of errors.
7. An electronic device, comprising:
a processor; and
a memory arranged to store computer executable instructions that, when executed, cause the processor to:
the method comprises the steps that an electric quantity transducer calibrating device sequentially measures current values of alternating current output by the electric quantity transducer calibrating device to obtain a plurality of current values of the alternating current;
the processor sequentially determines a plurality of current values of the expected direct current based on a linear relationship among the plurality of current values of the alternating current, the input standard current value of the electric quantity transmitter verification device, and the input standard current value and the output standard current value of the electric quantity transmitter verification device;
starting a detected device for a plurality of times, so that the detected device outputs direct current to an electric quantity transducer calibrating device for a plurality of times, wherein the detected device is a direct current constant current source;
starting the electric quantity transmitter calibrating device for a plurality of times, so that the electric quantity transmitter calibrating device sequentially measures the current values of the direct current which is output by the detected device for a plurality of times, and obtaining a plurality of corresponding measured current values;
the processor determines a stability of the power transmitter verification device based on the plurality of measured current values and the plurality of current values of the expected direct current.
8. A computer-readable storage medium storing one or more programs that, when executed by an electronic device comprising a plurality of application programs, cause the electronic device to:
the method comprises the steps that an electric quantity transducer calibrating device sequentially measures current values of alternating current output by the electric quantity transducer calibrating device to obtain a plurality of current values of the alternating current;
the processor sequentially determines a plurality of current values of the expected direct current based on a linear relationship among the plurality of current values of the alternating current, the input standard current value of the electric quantity transmitter verification device, and the input standard current value and the output standard current value of the electric quantity transmitter verification device;
starting a detected device for a plurality of times, so that the detected device outputs direct current to an electric quantity transducer calibrating device for a plurality of times, wherein the detected device is a direct current constant current source;
starting the electric quantity transmitter calibrating device for a plurality of times, so that the electric quantity transmitter calibrating device sequentially measures the current values of the direct current which is output by the detected device for a plurality of times, and obtaining a plurality of corresponding measured current values;
the processor determines a stability of the power transmitter verification device based on the plurality of measured current values and the plurality of current values of the expected direct current.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057909A (en) * | 1990-07-04 | 1992-01-15 | 华东工学院 | Electric quantity transducer and check meter of watt-hour meter |
| CN202939298U (en) * | 2012-11-22 | 2013-05-15 | 北京博电新力电气股份有限公司 | Alternating current sampling transmitter calibration instrument |
| CN204142945U (en) * | 2014-10-27 | 2015-02-04 | 北京麦克思拓测控科技有限公司 | Multi-function calibrator |
| CN110308414A (en) * | 2019-06-03 | 2019-10-08 | 许昌龙岗发电有限责任公司 | Multiple groups electric parameters transducer uniformly tests application of the law technology in transmitter calibrating |
-
2020
- 2020-06-28 CN CN202010599032.3A patent/CN111722170B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057909A (en) * | 1990-07-04 | 1992-01-15 | 华东工学院 | Electric quantity transducer and check meter of watt-hour meter |
| CN202939298U (en) * | 2012-11-22 | 2013-05-15 | 北京博电新力电气股份有限公司 | Alternating current sampling transmitter calibration instrument |
| CN204142945U (en) * | 2014-10-27 | 2015-02-04 | 北京麦克思拓测控科技有限公司 | Multi-function calibrator |
| CN110308414A (en) * | 2019-06-03 | 2019-10-08 | 许昌龙岗发电有限责任公司 | Multiple groups electric parameters transducer uniformly tests application of the law technology in transmitter calibrating |
Non-Patent Citations (9)
| Title |
|---|
| 一种交直流电表校验仪校准装置及其不确定度分析;周浩等;《东北电力技术》;20171120(第11期);第48-50、54页 * |
| 中华人民共和国电力工业部.检定装置.《电测量变送器检定规程 JJG（电力）01-1994》.1994, * |
| 便携式交流电量变送器检测仪;陈琼等;《仪表技术与传感器》;20090915(第09期);第24-26页 * |
| 梁东源主编.《电测仪表》.中国电力出版社,2004,(第7-5083-2444-7版),第471-490页. * |
| 电测仪表微机检定管理系统的开发与设计;张彦等;《电测与仪表》;20030625(第06期);第23-29页 * |
| 电测量变送器检定装置的不确定度;雷惠博;电力标准化与计量(第02期);第25-28页 * |
| 电测量变送器检定装置误差分析;雷惠博;电力标准化与计量(第01期);第3-6页 * |
| 电量变送器检定装置的测量不确定度评定;马琳娜;《高电压技术》;20040730(第07期);第28、51页 * |
| 电量变送器检定装置误差分析;房亚忠;《华北电力技术》;20071225(第12期);第16-19页 * |
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