An integrated calibration measurement system

Abstract

This invention discloses an integrated calibration and measurement system. Its core is to control the parameters of measuring instruments through software, automatically read and save results, and generate calibration certificates, achieving efficient calibration of instrument equipment. The system connects instrument equipment into measuring instrument groups according to calibration specifications. Each group is equipped with a corresponding subroutine, forming a calibration and measurement group. The computer, instruments, and software together constitute the basic calibration and measurement system. The integrated system consists of a server and multiple basic systems, which can be flexibly combined according to task requirements to achieve simultaneous calibration of multiple devices. Measurement parameters are stored in a database in the form of preset values. During measurement, these parameters are automatically read and written to the instruments, and the results are automatically saved and calibration certificates are generated, achieving full automation. Through preset parameters and automation functions, this system reduces manual labor intensity, improves calibration efficiency, reduces human error, and ensures the consistency and reliability of measurement results.

Description

Technical Field

[0001] This invention belongs to the field of calibration and measurement technology, and specifically relates to a system design for automated calibration and measurement of instruments, equipment, etc. Background Technology

[0002] In modern production and scientific research, the use of electronic instruments and equipment is becoming increasingly frequent, such as digital multimeters, various power supplies, and power analyzers. After these devices are manufactured, they need to be sent to qualified testing institutions for calibration and measurement. The testing institutions conduct measurements according to the relevant national standards and issue calibration certificates.

[0003] Currently, the calibration and measurement of instruments and equipment mainly rely on manual operation. The wiring is done according to the standard calibration wiring diagram, and the parameters are set according to the certificate requirements for measurement. The instrument parameters, calculation errors, uncertainties, etc. are recorded.

[0004] Taking the DC regulated power supply calibration specification (JJF 1587-2016) as an example, the final calibration certificate form contains as many as 13 items, involving various wiring methods and measurement items. Other specifications also have similar situations. The manual method has the following drawbacks: First, manual operation of instruments and data recording is inefficient; testing one instrument can take half a working day. Second, repeatedly setting the same parameters when testing multiple instruments can easily lead to operator fatigue and increase the risk of errors. Third, measurement data is usually saved in Excel file format, which poses a risk of data loss and corruption, and is not conducive to long-term data preservation and management. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the aforementioned problems, this invention aims to provide an integrated calibration and measurement system to improve the efficiency and accuracy of calibration measurements, reduce human error, and achieve long-term stable data storage. This system will employ automation technology to automatically perform wiring and parameter settings according to preset calibration specifications, automatically record and analyze measurement results, and store them in a structured data format to improve data security and traceability.

[0007] (II) Technical Solution

[0008] 1. For specific calibration specifications, customized programs are developed. Each calibration wiring diagram in each specification connects to a set of measuring instruments, forming a measurement instrument group. These instruments are connected to a computer via an instrument bus, and corresponding drivers are installed. The calibration measurement program performs data read and write operations on the instruments through these drivers. This entire hardware and software system constitutes a basic calibration measurement system.

[0009] 2. The integrated calibration and measurement system consists of a server and multiple basic calibration and measurement systems. The calibration and measurement program reads preset data from the database, writes it to the instruments for parameter settings, reads the measurement results, and stores them in the local database. After the measurement is completed, it reads data from the database, performs calculations according to the calibration specifications, obtains the results, and issues a certificate. The server database and the local database are configured as mirrors to achieve real-time data synchronization and consistency.

[0010] 3. For measurements with different wiring methods, the data format adopts JSON string format to reduce the complexity of the data table. Preset values ​​are stored in the preset value table in the database. After the program starts, it reads the preset values, writes them to the instrument, reads the measurement results and stores them in the database, and automatically generates a calibration certificate.

[0011] 4. For different groups of measuring instruments, the system can be flexibly combined and expanded according to the existing number of instruments to achieve simultaneous measurement of multiple instruments or various types of instruments. For example, when measuring power supply, two or more groups can be measured at once; when the number of measuring instruments is insufficient, two different wiring methods can be measured simultaneously.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, the present invention provides an integrated calibration and measurement system, which has the following advantages:

[0014] 1. Through automated operation, the time spent on manual operation is significantly reduced, the overall work efficiency is improved, and the calibration time of a single instrument is greatly shortened.

[0015] 2. The procedural operation reduces human error, improves the accuracy and reliability of measurements, and ensures the consistency and precision of calibration results.

[0016] 3. Using JSON string format to store data reduces the complexity of data management, improves the efficiency of data processing, and is conducive to the long-term preservation and management of data. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the calibration measurement group of the present invention;

[0018] Figure 2 This is a schematic diagram of the integrated calibration and measurement system of the present invention;

[0019] Figure 3 This is an extended schematic diagram of the measurement method of the present invention; Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] This invention relates to an integrated calibration and measurement system. The system connects measuring instruments and equipment to a computer via multiple communication lines, and achieves communication and control with the instruments through programming to complete measurement tasks. Measurement data is saved to a database, and calculations are performed to output corresponding certificates. The following is a detailed description of the system's components and overall workflow.

[0022] First, the design of the basic calibration measurement system.

[0023] The overall basic calibration measurement system is as follows Figure 1 As shown, a dedicated program is developed for each specific calibration specification. For example, for the DC regulated power supply calibration specification (JJF 1587-2016), the program is named the DC regulated power supply calibration measurement program. According to each calibration wiring diagram defined in the specification, the corresponding combination of instrumentation devices is called a measurement instrument group. These instruments are connected to the computer via communication methods such as GPIB, USB, and Ethernet (collectively referred to as the instrument bus), and corresponding drivers are installed on the computer. The calibration measurement program exchanges data with the instrumentation devices through these drivers to operate the equipment. In the measurement program, each calibration wiring diagram corresponds to a subroutine. For example, the DC current measurement wiring group under load corresponds to a specific subroutine, and other wiring groups follow the same principle. The measurement instrument group and the corresponding measurement subroutine are collectively called the calibration measurement group. The instruments, the PC, and the software together constitute the basic calibration measurement system. Similarly, other specifications such as power analysis are processed in the same way.

[0024] Second, the construction of an integrated testing system.

[0025] The overall principle block diagram of the integrated calibration and measurement system is as follows: Figure 2 As shown, the integrated calibration and measurement system consists of a server and multiple basic calibration and measurement systems. The calibration and measurement program reads preset data from the local database, writes it to the instrument to set parameters, and then reads the measurement results and saves them to the local database. After the measurement is completed, the program reads data from the database, performs calculations according to the calibration specifications, obtains the results, and generates the corresponding calibration certificate. The database on the server serves as a backup of the local database; the two are mirror images of each other.

[0026] Third, data format and flow.

[0027] In the database, a dedicated table is created for each calibration specification, such as a power supply calibration table and a power analyzer calibration table. Since the amount of data collected varies depending on the wiring method, JSON strings are used to store the measurement results to simplify the table structure. The parameters that need to be tested for each calibration measurement method are called preset values, and these preset values ​​are stored in the preset value table in the database. After the program starts, the corresponding subroutine is activated according to the wiring method of the measuring instrument, reads the preset values, writes them to the corresponding instrument device, and then reads the measurement results and stores them in the database.

[0028] Fourth, the expansion and combination of testing methods.

[0029] A basic calibration measurement system consists of a set of measuring instruments connected to a computer and running a program. However, it can be expanded and combined according to actual needs. For example, when measuring power supplies, two or more sets can be measured simultaneously. If the number of measuring instruments is insufficient, two different wiring methods can be measured simultaneously (these two methods require different measuring instruments). Alternatively, power supplies and power meters can be measured simultaneously by running the calibration measurement programs for both the power supply and power analyzer on the computer at the same time, such as... Figure 3 As shown.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. This invention relates to an integrated calibration and measurement system, characterized by the following technical solution: For specific calibration and measurement specifications, customized programs are developed, enabling instruments with each wiring method defined in the specifications to connect to a computer system via an instrument bus, forming an independent measurement instrument group. For each measurement group, corresponding subroutines are designed and implemented to ensure the accurate execution of the measurement process. This combination of hardware and software constitutes the basic calibration and measurement system, providing modular building blocks for subsequent integrated systems.

2. The method of claim 1, wherein: The integrated calibration and measurement system consists of a server and multiple basic calibration and measurement systems. The server provides backups for multiple local databases, ensuring data security and reliability. Depending on the specific measurement task requirements, these basic calibration and measurement systems can be flexibly combined with the server to achieve parallel calibration of multiple or various instruments and devices.

3. The method of claim 1, wherein: Measurement data is stored in JSON format, which effectively reduces the complexity of data tables and improves data processing efficiency. Measurement parameters are stored in the database as preset values. After the measurement program starts, it can automatically read these preset values ​​from the database and write them to the instrument. Then, it reads the measurement results and writes the results back to the database, calculates and generates calibration certificates, thus automating the measurement process.

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