Intelligent transmitter device for on-line error monitoring

Abstract

The invention provides an intelligent transmitter device for on-line error monitoring, and relates to the technical field of transmitters, the intelligent transmitter device comprises a transmitter main body installed in a shell, a display screen, a status lamp and a control button are installed on the surface of the shell, and a first electric quantity reference source is installed in the transmitter main body; the error monitoring module is used for calculating errors in the signal transmission process in real time; and the calibration and adjustment module is used for automatically performing calibration and adjustment according to the error in the signal transmission process. According to the invention, by arranging the error monitoring module, error verification can be completed without dismounting, so that the accuracy of the output result of the transmitter is ensured, and by arranging the calibration adjustment module, automatic adjustment is carried out when the error exceeds a preset range, and manual adjustment is not needed to eliminate the error, so that the accuracy of the output result is improved. Therefore, the automation degree of the transmitter is improved, the first-time elimination of the error is ensured, and the accuracy of the output result of the transmitter is further ensured.

Description

Technical Field

[0001] The invention relates to the technical field of transmitters, and in particular to an intelligent transmitter device for online error monitoring. Background Art

[0002] The industrial frequency AC power measurement transmitter (hereinafter referred to as the transmitter) is a device that converts the measured AC power (voltage, current, active power, reactive power, frequency, phase, power factor, etc.) into a DC analog signal or digital signal. It generally consists of three parts: signal acquisition circuit, signal processing and conversion circuit, and signal output circuit.

[0003] The existing transmitter only has a simple function, that is, to convert a large primary current into a small secondary current. When checking the error, it needs to be powered off and disassembled. There is no other additional function. However, in actual work, some transmitters in use, such as transmitters used to adjust the power of generators, cannot be disassembled or are inconvenient to disassemble. The error cannot be checked in time during the super cycle, which does not meet the requirements of the verification procedures. Summary of the invention

[0004] The present invention provides an intelligent transmitter device for online error monitoring, which is used to solve the defects in the prior art that some transmitters in use, such as transmitters for generator power regulation, cannot be disassembled or are inconvenient to disassemble, cannot timely calibrate their errors during super periods, and do not meet the requirements of calibration procedures.

[0005] In one aspect, the present invention provides an intelligent transmitter device for online error monitoring, comprising:

[0006] The transmitter body is installed inside the shell, a display screen, a status light and a control button are installed on the surface of the shell, and a first electrical quantity reference source is installed inside the transmitter body;

[0007] Error monitoring module, used to calculate the error in signal transmission process in real time;

[0008] The calibration and adjustment module is used to automatically perform calibration and adjustment according to errors in the signal transmission process.

[0009] Preferably, the error monitoring module includes:

[0010] A signal input unit, used for controlling the first electrical quantity reference source to input an electrical quantity signal of known accuracy to the transmitter;

[0011] A signal output unit, used for outputting an output signal of the transmitter obtained by detecting an electrical quantity signal with known accuracy;

[0012] A difference comparison unit is used to compare the difference between the output signal of the transmitter and the preset reference signal to obtain the actual error of the transmitter;

[0013] The adjustment trigger unit is used to perform automatic adjustment when the actual error of the transmitter exceeds a preset range.

[0014] Preferably, the calibration and adjustment module includes:

[0015] Type analysis unit, used to analyze the error types of the transmitter, including offset error and proportional error;

[0016] A calibration coefficient calculation unit, used for calculating an error calibration coefficient;

[0017] a calibration application unit for applying error calibration factors to the transmitter;

[0018] The calibration verification unit is used to re-input several groups of electrical quantity signals of known accuracy based on the calibrated transmitter and obtain the corresponding output signals of the transmitter. When the differences between the output signals of the transmitters in all groups and the preset reference signals are within the preset range, the calibration is passed. When the differences between the output signals of the transmitters and the preset reference signals are not within the preset range, the calibration is performed again.

[0019] Preferably, the type analysis unit includes:

[0020] A data acquisition subunit, used to acquire a plurality of sets of calibration data, each set of calibration data consisting of an input signal of an electrical quantity signal of known accuracy emitted by a first electrical quantity reference source and an output signal of a corresponding transmitter;

[0021] A type judgment subunit, used to calculate type judgment parameters and judge the error type, the type judgment parameters include offset judgment parameters and ratio judgment parameters;

[0022]

[0023] Among them, P 1 is the offset judgment parameter; P 2 is the ratio judgment parameter; M is the total number of calibration data sets; G i+1 is the actual value of the transmitter output signal in the i+1th set of calibration data; F i+1 G is the reference signal of the transmitter output signal in the i+1th group of calibration data; i is the actual value of the transmitter output signal in the i-th set of calibration data; F i is the reference signal of the transmitter output signal in the i-th group of calibration data; U 1 is the preset offset judgment threshold; U 2 is the preset ratio judgment threshold; || is the absolute value symbol;

[0024] When P 1 ≥0 and P2 When <0, the error type is proportional error;

[0025] When P 1 <0 and P 2 When ≥0, the error type is offset error;

[0026] When P 1 ≥0 and P 2 When ≥0, perform alarm maintenance.

[0027] Preferably, the error calibration coefficient includes a ratio calibration coefficient and an offset calibration coefficient, and the calibration coefficient calculation unit includes:

[0028] An offset error coefficient calculation subunit, used to calculate an offset calibration coefficient of an offset type error;

[0029] Among them, D 1 is the offset calibration coefficient; G i is the actual value of the transmitter output signal in the i-th set of calibration data; F i is the reference signal of the transmitter output signal in the i-th group of calibration data; M is the total number of groups of calibration data;

[0030] A proportional error coefficient calculation subunit, used to calculate a proportional calibration coefficient of a proportional error;

[0031] Among them, D 2 is the proportional calibration coefficient; G i is the actual value of the transmitter output signal in the i-th set of calibration data; F i is the reference signal of the transmitter output signal in the i-th group of calibration data; M is the total number of groups of calibration data.

[0032] Preferably, the calibration application unit comprises:

[0033] The type calling subunit is used to call the error type;

[0034] The first application subunit, when the error type is an offset error, performs calibration based on the following formula;

[0035] T=T 0 -D 1 ; Where T is the output value of the calibrated transmitter; T 0 is the transmitter output value before calibration; D 1 is the offset calibration coefficient;

[0036] The second application subunit, when the error type is a proportional error, performs calibration based on the following formula;

[0037] Where, T is the output value of the calibrated transmitter; T 0 is the transmitter output value before calibration; D 2 is the proportional calibration factor.

[0038] Preferably, a benchmark verification module is also included, and the benchmark verification module includes:

[0039] A second electrical quantity reference source is disposed inside the transmitter body;

[0040] A verification signal group acquisition unit, used for periodically controlling the first power reference source and the second power reference source to input a plurality of power signals of known accuracy and the same magnitude to the transmitter respectively, and acquiring a plurality of corresponding verification signal groups, each verification signal group including two output signals of the transmitter obtained by respectively outputting the first power reference source and the second power reference source with the same magnitude;

[0041] A verification unit, used for evaluating the output accuracy of the electrical quantity reference source according to the verification signal group;

[0042] The alarm unit performs alarm maintenance when the output accuracy of the power reference source is too low.

[0043] Preferably, the verification unit includes:

[0044] An evaluation value calculation subunit, used to calculate a reliability evaluation value of an electric quantity reference source;

[0045] Where E is the reliability evaluation value of the electrical quantity reference source; α and β are the calculation weighting coefficients of absolute error and percentage error respectively; N is the total number of verification signal groups; A 1j A is the output signal of the transmitter obtained based on the input signal of the first electrical quantity reference source in the jth group of test signals; 2j is the output signal of the transmitter obtained based on the input signal of the second electrical quantity reference source in the jth group of test signals; C is the maximum allowable absolute error between the output signal of the transmitter obtained based on the input signal of the first electrical quantity reference source and the output signal of the transmitter obtained based on the input signal of the second electrical quantity reference source; A 1(j+1) A is the output signal of the transmitter obtained based on the input signal of the first electrical quantity reference source in the j+1th group of test signals; 2(j+1) is the output signal of the transmitter obtained based on the input signal of the second electrical quantity reference source in the j+1th group of inspection signals;

[0046] An accuracy judgment subunit, used for outputting an accuracy judgment result based on the reliability evaluation value;

[0047] When the reliability evaluation value is less than or equal to the preset accuracy threshold, the accuracy is judged to be normal;

[0048] When the reliability evaluation value is greater than the preset accuracy threshold, the judgment result is that the accuracy is too low.

[0049] Compared with the prior art, the present invention has the following beneficial effects:

[0050] The present invention can complete error verification without disassembly by setting an error monitoring module, thereby ensuring the accuracy of the output result of the transmitter, and automatically adjusts when the error exceeds a preset range by setting a calibration adjustment module, eliminating the need for manual adjustment to eliminate the error, thereby improving the automation level of the transmitter, ensuring that the error is eliminated in the first place, and further ensuring the accuracy of the output result of the transmitter. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0052] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0055] Example 1

[0056] An embodiment of the present invention provides an intelligent transmitter device for online error monitoring, comprising:

[0057] The transmitter body is installed inside the shell, a display screen, a status light and a control button are installed on the surface of the shell, and a first electrical quantity reference source is installed inside the transmitter body;

[0058] Error monitoring module, used to calculate the error in signal transmission process in real time;

[0059] The calibration and adjustment module is used to automatically perform calibration and adjustment according to errors in the signal transmission process.

[0060] Preferably, the error monitoring module includes:

[0061] A signal input unit, used for controlling the first electrical quantity reference source to input an electrical quantity signal of known accuracy to the transmitter;

[0062] A signal output unit, used for outputting an output signal of the transmitter obtained by detecting an electrical quantity signal with known accuracy;

[0063] A difference comparison unit is used to compare the difference between the output signal of the transmitter and the preset reference signal to obtain the actual error of the transmitter;

[0064] The adjustment trigger unit is used to perform automatic adjustment when the actual error of the transmitter exceeds a preset range.

[0065] In this embodiment, the first electrical quantity reference source is a high-precision reference source, which is used to emit an electrical quantity signal with known accuracy.

[0066] In this embodiment, the status lights include an operation indicator light, an alarm indicator light and an out-of-tolerance indicator light. When the transmitter operates normally, the operation indicator light is green. When the transmitter fails, the alarm indicator light is red. When the fault is eliminated, the alarm indicator light goes out. When the transmitter exceeds the tolerance, the out-of-tolerance indicator light is yellow. When the deviation is eliminated, the out-of-tolerance indicator light goes out.

[0067] In this embodiment, the control buttons include a reset button, a cancel button, a confirmation button, and up, down, left, and right buttons.

[0068] In this embodiment, the electrical quantity signal includes voltage and current.

[0069] In this embodiment, the reference signal is a preset standard value of the output signal of the transmitter corresponding to the electrical quantity signal with known accuracy.

[0070] The beneficial effects of the above technical solution are:

[0071] The present invention can complete error verification without disassembly by setting an error monitoring module, thereby ensuring the accuracy of the output result of the transmitter, and automatically adjusts when the error exceeds a preset range by setting a calibration adjustment module, eliminating the need for manual adjustment to eliminate the error, thereby improving the automation level of the transmitter, ensuring that the error is eliminated in the first place, and further ensuring the accuracy of the output result of the transmitter.

[0072] By setting the display screen, status light and control buttons, the current working status of the transmitter can be intuitively reflected, making it convenient for staff to monitor.

[0073] Example 2

[0074] Based on Example 1, the calibration and adjustment module includes:

[0075] Type analysis unit, used to analyze the error types of the transmitter, including offset error and proportional error;

[0076] A calibration coefficient calculation unit, used for calculating an error calibration coefficient;

[0077] a calibration application unit for applying error calibration factors to the transmitter;

[0078] The calibration verification unit is used to re-input several groups of electrical quantity signals of known accuracy based on the calibrated transmitter and obtain the corresponding output signals of the transmitter. When the differences between the output signals of the transmitters in all groups and the preset reference signals are within the preset range, the calibration is passed. When the differences between the output signals of the transmitters and the preset reference signals are not within the preset range, the calibration is performed again.

[0079] Preferably, the type analysis unit includes:

[0080] A data acquisition subunit, used to acquire a plurality of sets of calibration data, each set of calibration data consisting of an input signal of an electrical quantity signal of known accuracy emitted by a first electrical quantity reference source and an output signal of a corresponding transmitter;

[0081] A type judgment subunit, used to calculate type judgment parameters and judge the error type, the type judgment parameters include offset judgment parameters and ratio judgment parameters;

[0082]

[0083] Among them, P 1 is the offset judgment parameter; P 2 is the ratio judgment parameter; M is the total number of calibration data sets; G i+1 is the actual value of the transmitter output signal in the i+1th set of calibration data; F i+1G is the reference signal of the transmitter output signal in the i+1th group of calibration data; i is the actual value of the transmitter output signal in the i-th set of calibration data; F i is the reference signal of the transmitter output signal in the i-th group of calibration data; U 1 is the preset offset judgment threshold; U 2 is the preset ratio judgment threshold; || is the absolute value symbol;

[0084] When P 1 ≥0 and P 2 When <0, the error type is proportional error;

[0085] When P 1 <0 and P 2 When ≥0, the error type is offset error;

[0086] When P 1 ≥0 and P 2 When ≥0, perform alarm maintenance.

[0087] Preferably, the error calibration coefficient includes a ratio calibration coefficient and an offset calibration coefficient, and the calibration coefficient calculation unit includes:

[0088] An offset error coefficient calculation subunit, used to calculate an offset calibration coefficient of an offset type error;

[0089] Among them, D 1 is the offset calibration coefficient; G i is the actual value of the transmitter output signal in the i-th set of calibration data; F i is the reference signal of the transmitter output signal in the i-th group of calibration data; M is the total number of groups of calibration data;

[0090] A proportional error coefficient calculation subunit, used to calculate a proportional calibration coefficient of a proportional error;

[0091] Among them, D 2 is the proportional calibration coefficient; G i is the actual value of the transmitter output signal in the i-th set of calibration data; F i is the reference signal of the transmitter output signal in the i-th group of calibration data; M is the total number of groups of calibration data.

[0092] Preferably, the calibration application unit comprises:

[0093] The type calling subunit is used to call the error type;

[0094] The first application subunit, when the error type is an offset error, performs calibration based on the following formula;

[0095] T=T 0 -D 1 ; Where T is the output value of the calibrated transmitter; T 0 is the transmitter output value before calibration; D 1 is the offset calibration coefficient;

[0096] The second application subunit, when the error type is a proportional error, performs calibration based on the following formula;

[0097] Where, T is the output value of the calibrated transmitter; T 0 is the transmitter output value before calibration; D 2 is the proportional calibration factor.

[0098] The beneficial effects of the above technical solution are:

[0099] When performing automatic calibration and adjustment of errors, first obtain several sets of calibration data and analyze the calibration data to determine the type of error, thereby providing a clear direction for subsequent calibration. After the calibration is completed, a check is performed to ensure the accuracy of the error calibration and avoid further complication of the error caused by inaccurate calibration, which will affect the effect of subsequent automatic calibration.

[0100] By calculating the difference between the output signals of multiple groups of transmitters and the preset reference signals, the offset relationship and proportional relationship between each two groups of correction data are judged respectively, so as to determine the type of error. If there is no significant offset relationship and proportional relationship in the error data, the staff will be reminded to conduct manual inspection through alarm, so as to carry out maintenance in time from the physical level, eliminate the hidden dangers inside the transmitter and avoid damage to the transmitter.

[0101] The error calibration coefficient is automatically calculated based on the error data, so that the output result of the transmitter can be automatically corrected in time. After the error exceeds the preset allowable range, it is automatically adjusted to compensate for the decrease in measurement accuracy caused by factors such as component aging, improve the accuracy of the transmitter output result, reduce the number of inspections of the transmitter, avoid frequent disassembly of the transmitter, reduce the workload of the staff, and avoid damage to the transmitter caused by frequent disassembly.

[0102] Example 3

[0103] On the basis of embodiment 1 or 2, a benchmark verification module is further included, and the benchmark verification module includes:

[0104] A second electrical quantity reference source is disposed inside the transmitter body;

[0105] A verification signal group acquisition unit, used for periodically controlling the first power reference source and the second power reference source to input a plurality of power signals of known accuracy and the same magnitude to the transmitter respectively, and acquiring a plurality of corresponding verification signal groups, each verification signal group including two output signals of the transmitter obtained by respectively outputting the first power reference source and the second power reference source with the same magnitude;

[0106] A verification unit, used for evaluating the output accuracy of the electrical quantity reference source according to the verification signal group;

[0107] The alarm unit performs alarm maintenance when the output accuracy of the power reference source is too low.

[0108] Preferably, the verification unit includes:

[0109] An evaluation value calculation subunit, used to calculate a reliability evaluation value of an electric quantity reference source;

[0110] Where E is the reliability evaluation value of the electrical quantity reference source; α and β are the calculation weighting coefficients of absolute error and percentage error respectively; N is the total number of verification signal groups; A 1j A is the output signal of the transmitter obtained based on the input signal of the first electrical quantity reference source in the jth group of test signals; 2j is the output signal of the transmitter obtained based on the input signal of the second electrical quantity reference source in the jth group of test signals; C is the maximum allowable absolute error between the output signal of the transmitter obtained based on the input signal of the first electrical quantity reference source and the output signal of the transmitter obtained based on the input signal of the second electrical quantity reference source; A 1(j+1) A is the output signal of the transmitter obtained based on the input signal of the first electrical quantity reference source in the j+1th group of test signals; 2(j+1) is the output signal of the transmitter obtained based on the input signal of the second electrical quantity reference source in the j+1th group of inspection signals;

[0111] An accuracy judgment subunit, used for outputting an accuracy judgment result based on the reliability evaluation value;

[0112] When the reliability evaluation value is less than or equal to the preset accuracy threshold, the accuracy is judged to be normal;

[0113] When the reliability evaluation value is greater than the preset accuracy threshold, the judgment result is that the accuracy is too low.

[0114] In this embodiment, the power reference source includes a first power reference source and a second power reference source.

[0115] In this embodiment, the percentage error is the percentage of the error to the standard value.

[0116] The beneficial effects of the above technical solution are:

[0117] By setting up a second power reference source, it can temporarily take over the first power reference source as the signal source of the error monitoring module after an unexpected failure of the first power reference source, avoiding sudden failure of the error detection module and providing sufficient buffer time for shutdown maintenance.

[0118] By calculating the difference in the output signal of the transmitter obtained after the first electrical quantity reference source and the second electrical quantity reference source output electrical quantity signals of the same magnitude, the output accuracy of the first electrical quantity reference source and the second electrical quantity reference source is determined, thereby ensuring the accuracy of the transmitter error detection and avoiding incorrect calibration of the transmitter due to the error of the first electrical quantity reference source, which causes the error of the transmitter to increase.

[0119] pass Calculate the absolute error between the output signals of the two sets of transmitters in the calibration signal group. By calculating the ratio of the absolute error between the output signals of the two sets of transmitters to the maximum allowable absolute error, the margin of the absolute error between the output signals of the two sets of transmitters can be intuitively reflected. The difference in percentage error between the output signals of the two groups of transmitters in the verification signal group is calculated to reflect whether the percentage error will change with the change of the standard output, so as to determine whether the electrical quantity reference source has a tendency to fail. When the accuracy is determined to be too low, it can be determined that the accuracy of the output value of at least one device in the first electrical quantity reference source and the second electrical quantity reference source cannot meet the use requirements, so that the system can be shut down for maintenance in time. By regularly detecting the accuracy of the first electrical quantity reference source and the second electrical quantity reference source, the normal operation of the error monitoring function is guaranteed, and the accuracy of error monitoring is guaranteed.

[0120] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An intelligent transmitter device for online error monitoring, characterized in that: include: The transmitter body is installed inside the shell, a display screen, a status light and a control button are installed on the surface of the shell, and a first electrical quantity reference source is installed inside the transmitter body; Error monitoring module, used to calculate the error in signal transmission process in real time; The calibration and adjustment module is used to automatically perform calibration and adjustment according to errors in the signal transmission process.

2. The intelligent transmitter device for online error monitoring according to claim 1 is characterized in that: The error monitoring module includes: A signal input unit, used for controlling the first electrical quantity reference source to input an electrical quantity signal of known accuracy to the transmitter; A signal output unit, used for outputting an output signal of the transmitter obtained by detecting an electrical quantity signal with known accuracy; A difference comparison unit is used to compare the difference between the output signal of the transmitter and the preset reference signal to obtain the actual error of the transmitter; The adjustment trigger unit is used to perform automatic adjustment when the actual error of the transmitter exceeds a preset range.

3. The intelligent transmitter device for online error monitoring according to claim 1 is characterized in that: The calibration and adjustment module includes: Type analysis unit, used to analyze the error types of the transmitter, including offset error and proportional error; A calibration coefficient calculation unit, used for calculating an error calibration coefficient; a calibration application unit for applying error calibration factors to the transmitter; The calibration verification unit is used to re-input several groups of electrical quantity signals of known accuracy based on the calibrated transmitter and obtain the corresponding output signals of the transmitter. When the differences between the output signals of the transmitters in all groups and the preset reference signals are within the preset range, the calibration is passed. When the differences between the output signals of the transmitters and the preset reference signals are not within the preset range, the calibration is performed again.

4. The intelligent transmitter device for online error monitoring according to claim 3 is characterized in that: Type analysis units include: A data acquisition subunit, used to acquire a plurality of sets of calibration data, each set of calibration data consisting of an input signal of an electrical quantity signal of known accuracy emitted by a first electrical quantity reference source and an output signal of a corresponding transmitter; A type judgment subunit, used to calculate type judgment parameters and judge the error type, the type judgment parameters include offset judgment parameters and ratio judgment parameters; Among them, P1 is the offset judgment parameter; P2 is the ratio judgment parameter; M is the total number of calibration data sets; G i+1 is the actual value of the transmitter output signal in the i+1th set of calibration data; F i+1 G is the reference signal of the transmitter output signal in the i+1th group of calibration data; i is the actual value of the transmitter output signal in the i-th set of calibration data; F i is the reference signal of the transmitter output signal in the i-th group of calibration data; U1 is the preset offset judgment threshold; U2 is the preset ratio judgment threshold; | | is the absolute value symbol; When P1≥0 and P2<0, the error type is proportional error; When P1<0 and P2≥0, the error type is offset error; When P1≥0 and P2≥0, perform alarm maintenance.

5. The intelligent transmitter device for online error monitoring according to claim 4 is characterized in that: The error calibration coefficient includes a ratio calibration coefficient and an offset calibration coefficient, and the calibration coefficient calculation unit includes: An offset error coefficient calculation subunit, used to calculate an offset calibration coefficient of an offset type error; Where D1 is the offset calibration coefficient; G i is the actual value of the transmitter output signal in the i-th set of calibration data; F i is the reference signal of the transmitter output signal in the i-th group of calibration data; M is the total number of groups of calibration data; A proportional error coefficient calculation subunit, used to calculate a proportional calibration coefficient of a proportional error; Where D2 is the proportional calibration coefficient; G i is the actual value of the transmitter output signal in the i-th set of calibration data; F i is the reference signal of the transmitter output signal in the i-th group of calibration data; M is the total number of groups of calibration data.

6. The intelligent transmitter device for online error monitoring according to claim 5, characterized in that: The calibration application unit includes: The type calling subunit is used to call the error type; The first application subunit, when the error type is an offset error, performs calibration based on the following formula; T=T0-D1; where T is the transmitter output value after calibration; T0 is the transmitter output value before calibration; D1 is the offset calibration coefficient; The second application subunit, when the error type is a proportional error, performs calibration based on the following formula; Where, T is the transmitter output value after calibration; T0 is the transmitter output value before calibration; D2 is the proportional calibration coefficient.

7. The intelligent transmitter device for online error monitoring according to claim 1 is characterized in that: It also includes a benchmark verification module, which includes: A second electrical quantity reference source is disposed inside the transmitter body; A verification signal group acquisition unit, used for periodically controlling the first power reference source and the second power reference source to input a plurality of power signals of known accuracy and the same magnitude to the transmitter respectively, and acquiring a plurality of corresponding verification signal groups, each verification signal group including two output signals of the transmitter obtained by respectively outputting the first power reference source and the second power reference source with the same magnitude; A verification unit, used for evaluating the output accuracy of the electrical quantity reference source according to the verification signal group; The alarm unit performs alarm maintenance when the output accuracy of the power reference source is too low.

8. The intelligent transmitter device for online error monitoring according to claim 7, characterized in that: The calibration unit includes: An evaluation value calculation subunit, used to calculate a reliability evaluation value of an electric quantity reference source; Where E is the reliability evaluation value of the electrical quantity reference source; α and β are the calculation weighting coefficients of absolute error and percentage error respectively; N is the total number of verification signal groups; A 1j A is the output signal of the transmitter obtained based on the input signal of the first electrical quantity reference source in the jth group of test signals; 2j is the output signal of the transmitter obtained based on the input signal of the second electrical quantity reference source in the jth group of test signals; C is the maximum allowable absolute error between the output signal of the transmitter obtained based on the input signal of the first electrical quantity reference source and the output signal of the transmitter obtained based on the input signal of the second electrical quantity reference source; A 1(j+1) A is the output signal of the transmitter obtained based on the input signal of the first electrical quantity reference source in the j+1th group of test signals; 2(j+1) is the output signal of the transmitter obtained based on the input signal of the second electrical quantity reference source in the j+1th group of inspection signals; An accuracy judgment subunit, used for outputting an accuracy judgment result based on the reliability evaluation value; When the reliability evaluation value is less than or equal to the preset accuracy threshold, the accuracy is judged to be normal; When the reliability evaluation value is greater than the preset accuracy threshold, the judgment result is that the accuracy is too low.

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