CN218727954U

CN218727954U - Multifunctional standard source calibration system

Info

Publication number: CN218727954U
Application number: CN202222684565.9U
Authority: CN
Inventors: 朱羽萌; 徐鹏; 盛定国; 杜宇娟; 冯跃娟
Original assignee: China North Engine Research Institute Tianjin
Current assignee: China North Engine Research Institute Tianjin
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-03-24
Anticipated expiration: 2032-10-12

Abstract

The utility model discloses a multi-functional standard source calbiration system, including treating multi-functional standard source unit of calibration, digital multimeter, multi-functional standard source automatic calibration system and image acquisition unit. The multifunctional standard source automatic calibration system controls the multifunctional standard source to output signals to the digital multimeter under the coordination of the calibration module. The multifunctional standard source unit to be calibrated comprises a multifunctional standard source to be calibrated, a range automatic switcher and a multi-channel switcher, and the area to be calibrated can be provided with a plurality of multifunctional standard sources. The multi-channel switcher can switch and select different multifunctional standard source output signals to be calibrated to the digital multimeter. The automatic range switcher can realize the automatic switching function of the range in the calibration process. The utility model discloses require low, can realize the automatic calibration, the data processing and the certificate issue of a plurality of multi-functional standard sources to the calibration personnel, improved work efficiency and measurement management level.

Description

Multifunctional standard source calibration system

Technical Field

The utility model relates to an electricity measurement calibration field especially relates to a multi-functional standard source calibration system.

Background

The multifunctional standard source is used as a high-precision standard signal source for digital display, and can output five types of electric signals of direct current voltage, alternating current voltage, direct current, alternating current and direct current resistance. The method is widely applied to the fields of quantity value transmission, industrial production, experimental research and the like in the metering industry.

The multifunctional standard source has more calibration items and calibration points, and the calibration procedure is complicated. At present, the calibration method is mainly manually operated, and the time required for calibration, data processing and uncertainty calculation is long. Therefore, the utility model discloses use multi-functional standard source calibration system as relying on, designed a multi-functional standard source calibration system.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multi-functional standard source calbiration system, one kind can be to having the multi-functional standard source of digital interface to calibrate, directly carry out data processing, uncertainty evaluation, issue the multi-functional standard source automatic calbiration system of certificate.

As the conception, the utility model adopts the technical proposal that:

a multifunctional standard source calibration system comprises a multifunctional standard source unit to be calibrated, a digital multimeter, a multifunctional standard source automatic calibration system and an image acquisition unit. The multifunctional standard source unit comprises a plurality of multifunctional standard sources to be calibrated, a range automatic switcher and a multi-channel switcher; the multifunctional standard source automatic calibration system is internally provided with a calibration module for controlling the calibration process; the multifunctional standard source unit is connected with the digital multimeter; the multifunctional standard source unit and the digital multimeter are connected with a computer through a GPIB bus, and the computer controls the multifunctional standard source to output a calibration signal through the calibration module; the image collector is arranged at the display screen of the digital multimeter and transmits the collected numerical values to the computer through the USB port.

Further, for a multifunctional standard source without a digital interface, automatic data acquisition of the digital multimeter of the standard can be realized, meanwhile, the value of the multifunctional standard source to be calibrated needs to be manually input, and the system can automatically process data and issue a certificate.

The utility model has the advantages that: use the utility model provides a multi-functional standard source automatic calibration system can calibrate, data processing, uncertainty evaluation to all multi-functional standard sources of taking digital interface, realizes that data management, certificate issue integration, and man-machine conversation is simple, convenient, uses manpower sparingly, can guarantee the accuracy of quantity transmission simultaneously, satisfies corresponding calibration standard's requirement, has stronger practicality.

Drawings

Fig. 1 is a schematic block diagram of the present invention.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Referring to fig. 1, a multifunctional standard source calibration system includes a multifunctional standard source unit to be calibrated, a digital multimeter, a multifunctional standard source automatic calibration system, and an image acquisition unit. The method is characterized in that: the multifunctional standard source unit comprises a plurality of multifunctional standard sources to be calibrated, a range automatic switcher and a multi-channel switcher; the multifunctional standard source automatic calibration system is internally provided with a calibration module for controlling the calibration process; the multifunctional standard source unit is connected with the digital multimeter; the multifunctional standard source unit and the digital multimeter are connected with a computer through a GPIB bus, and the computer controls the multifunctional standard source to output a calibration signal through the calibration module; the image collector is arranged at the display screen of the digital multimeter and transmits the collected numerical values to the computer through the USB port.

For a multifunctional standard source without a digital interface, automatic data acquisition of a digital multimeter of a standard can be realized, meanwhile, the value of the multifunctional standard source to be calibrated needs to be manually input, and the system can automatically process data and issue a certificate.

The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a multi-functional standard source calibration system, includes waits to calibrate multi-functional standard source unit, digital multimeter, multi-functional standard source automatic calibration system and image acquisition unit which characterized in that: the multifunctional standard source unit comprises a plurality of multifunctional standard sources to be calibrated, a range automatic switcher and a multi-channel switcher; the multifunctional standard source automatic calibration system is internally provided with a calibration module for controlling the calibration process; the multifunctional standard source unit to be calibrated is connected with the digital multimeter; the multifunctional standard source unit and the digital multimeter are connected with a computer through a GPIB bus, and the computer controls the multifunctional standard source to output a calibration signal through the calibration module; the image collector is arranged at the display screen of the digital multimeter and transmits the collected numerical values to the computer through the USB port.

2. The system of claim 1, wherein for a multifunctional standard source without a digital interface, an automatic data collection of the digital multimeter of the standard can be realized, and meanwhile, a value of the multifunctional standard source to be calibrated needs to be manually input, and the system can automatically process the data and issue a certificate.