Automatic calibration method for multifunctional calibration source

Abstract

The invention provides an automatic calibration method for a multifunctional calibration source, and the method comprises the steps: enabling a control system to be connected with the multifunctional calibration source and a to-be-detected device, enabling the control system to automatically calculate a plurality of parameter values needing to be calibrated according to a parameter range needing to be calibrated and an interval value, and transmitting a calibration instruction to the multifunctional calibration source; after a calibration instruction is received, the multifunctional calibration source sequentially outputs parameter standard values corresponding to the parameter values needing to be calibrated to the equipment to be detected according to the parameter values needing to be calibrated; after the to-be-detected device receives the parameter standard values, a plurality of corresponding measurement values are formed in sequence, and the measurement values are fed back to the control system; and the control system calculates the corresponding deviation and uncertainty of the to-be-detected equipment according to the parameter standard value and the measured value. Parameters needing to be calibrated comprise voltage, resistance, current and frequency. According to the invention, the technical problems of low efficiency and high error rate during manual calibration of parameters such as voltage, resistance, current and frequency can be solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of instrument calibration, and particularly relates to a multifunctional calibration source automatic calibration method. BACKGROUND

[0002] The multifunctional calibration source is a high-precision measurement standard capable of outputting multiple parameters such as direct current resistance, direct current voltage, direct current, alternating current voltage and alternating current, and can be used for calibrating digital multimeters or single-function instruments. At present, when the multifunctional calibration source is used for current and voltage calibration, manual operation is mainly adopted, which is not only low in efficiency, but also likely to cause calibration errors due to operation errors of the tester during operation. SUMMARY

[0003] (I) Technical problem to be solved

[0004] The present application provides a multifunctional calibration source automatic calibration method to solve the technical problems of low efficiency and easy errors in manual calibration of voltage, resistance, current and frequency.

[0005] (II) Technical scheme

[0006] In order to solve the above technical problems, the present application provides a multifunctional calibration source automatic calibration method, which comprises the following steps:

[0007] S1. Connecting the control system with the multifunctional calibration source and the device to be tested, respectively, and connecting the multifunctional calibration source with the device to be tested;

[0008] S2. The control system automatically calculates a plurality of parameter values to be calibrated according to the parameter range and interval value to be calibrated, and sends a calibration instruction to the multifunctional calibration source. After receiving the calibration instruction, the multifunctional calibration source outputs parameter standard values corresponding to the plurality of parameter values to be calibrated to the device to be tested in sequence according to the parameter values to be calibrated. After receiving the parameter standard values, the device to be tested forms a plurality of measurement values in sequence, and feeds back the measurement values to the control system. The control system calculates the corresponding deviation and uncertainty of the device to be tested according to the parameter standard values and the measurement values.

[0009] Further, in step S2, the control system saves the calibration results according to different report formats.

[0010] Further, in step S2, the control system outputs the calibration results through a printer.

[0011] Further, in step S2, the same automatic calibration process is used to calibrate the voltage, resistance, current and frequency parameters of the device to be tested.

[0012] (III) Beneficial Effects

[0013] The present application provides a multifunctional calibration source automatic calibration method, comprising connecting a control system with a multifunctional calibration source and a device to be tested respectively, the control system automatically calculating a plurality of parameter values to be calibrated according to a parameter range to be calibrated and an interval value, and sending a calibration instruction to the multifunctional calibration source; after receiving the calibration instruction, the multifunctional calibration source sequentially outputs parameter standard values corresponding to the plurality of parameter values to be calibrated to the device to be tested according to the parameter values to be calibrated; after receiving the parameter standard values, the device to be tested sequentially forms a plurality of measurement values corresponding thereto, and feeds back the measurement values to the control system; and the control system calculates corresponding deviations and uncertainties of the device to be tested according to the parameter standard values and the measurement values. The parameters to be calibrated include voltage, resistance, current and frequency. The present application can solve the technical problems of low efficiency and easy to make mistakes when manually calibrating voltage, resistance, current and frequency. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A multifunctional calibration source automatic calibration method principle diagram of the present application. DETAILED DESCRIPTION

[0015] In order to make the purpose, content and advantages of the present application clearer, the specific embodiments of the present application are described in further detail below in combination with the drawings and examples.

[0016] The present embodiment provides a multifunctional calibration source automatic calibration method, the principle of which is shown in Figure 1 , mainly comprising the following steps:

[0017] S1. Connecting the multifunctional calibration source with the device to be tested through the connecting line 1; connecting the control system with the multifunctional calibration source, the printer and the device to be tested through the connecting line 2, the connecting line 3 and the connecting line 4 respectively.

[0018] S2. Voltage parameter calibration: the control system automatically calculates a plurality of voltage parameter values V1, V2, V3…Vn according to a voltage parameter range 0~Vmax and an interval value, and sends a calibration instruction to the multifunctional calibration source. max i max ​​and sends calibration instructions to the multi-functional calibration source through the connecting line 2; after receiving the calibration instructions, the multi-functional calibration source outputs voltage parameter standard values corresponding to the voltage parameter values to be calibrated to the device under test through the connecting line 1 in sequence according to the voltage parameter values to be calibrated; after receiving the voltage parameter standard values, the device under test forms corresponding voltage measurement values in sequence and feeds back the voltage measurement values to the control system through the connecting line 4; the control system calculates the corresponding deviation and uncertainty of the device under test according to the voltage parameter standard values and the voltage measurement values, and saves the calibration results according to different report formats; when printing is needed, the control system controls the printer to output the calibration results and the corresponding report through the connecting line 3.

[0019] S3. Resistance, current and frequency parameter calibration: using the same automatic calibration process as step S2, replacing the voltage parameter with the resistance, current and frequency parameter, and calibrating the resistance, current and frequency parameter of the device under test.

[0020] The above is only the preferred embodiment of the present application, and it should be noted that those skilled in the art can make several improvements and modifications without departing from the technical principles of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A method for automated calibration of a multi-function calibration source, the method comprising: The automatic calibration method of the multifunctional calibration source comprises the following steps: S1. connecting a control system with a multifunctional calibration source and a device to be tested respectively, and connecting the multifunctional calibration source with the device to be tested; S2. the control system automatically calculates a plurality of parameter values to be calibrated according to a parameter range to be calibrated and interval values, and sends a calibration instruction to the multifunctional calibration source; after receiving the calibration instruction, the multifunctional calibration source outputs parameter standard values corresponding to the plurality of parameter values to be calibrated to the device to be tested in sequence according to the parameter values to be calibrated; after receiving the parameter standard values, the device to be tested forms a plurality of measurement values in sequence, and feeds back the measurement values to the control system; The control system calculates corresponding deviations and uncertainties of the device to be tested according to the parameter standard values and the measurement values.

2. The method of claim 1, wherein, In step S2, the control system saves the calibration results according to different report formats.

3. The method of claim 1, wherein, In step S2, the control system outputs the calibration results through a printer.

4. The method of claim 1, wherein, In step S2, the same automatic calibration process is used to calibrate voltage, resistance, current and frequency parameters of the device to be tested.

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