Digital multimeter automatic verification system based on virtual instrument technology and control method

Abstract

The invention relates to a digital multimeter automatic verification system and a virtual instrument technology, belonging to the field of automation, in particular to a digital multimeter automatic verification system based on a virtual instrument technology, and a control method. The digital multimeter automatic verification system is based on a communication module, an upper computer is connected with a physical device through an RS-232 (Recommend Standard 232) or IEEE488 (Institute of Electrical and Electronics Engineers) communication interface, and an instruction is recognized through a virtual digital meter (VDM) and data is processed and converted by using a data processing module. The computer technology is fully applied to the field of measurement and control, upper computer software is used as a control core, data sampling is carried out on a standard device and a device to be tested through A / D (Analog-to-Digital) conversion in a communication interface mode, circulating errors of the standard device and the device to be tested are calculated many times, and the communication interface is switched between an RS232 interface and an IEEE488 interface, verification data is acquired in a computer, errors are calculated by using a software program, and finally, verification records are stored in a dynamic database. By the system and the control method, the meter verification speed and efficiency can be increased and the detection cost of a digital instrument is reduced.

Description

technical field [0001] The invention relates to a digital multimeter verification system and virtual instrument technology, belonging to the field of automation, in particular to an automatic verification system and control method for a digital multimeter based on virtual instrument technology, which is a virtual instrument control technology for digital meters. Background technique [0002] At present, the detection technology of digital instruments in our country has always been semi-automatic. This detection technology has the disadvantages of low work efficiency and poor accuracy. Contents of the invention [0003] The present invention aims at the problems existing in the above-mentioned prior art, and provides an automatic verification system for digital multimeters based on virtual instrument technology in order to improve the speed and efficiency of meter inspection, and provides an automatic verification system and control method for digital multimeters based on vi...

AI Technical Summary

Problems solved by technology

The purpose is to solve the problem of heavy workload and low efficiency in manual verification due to many items, complex range, high data accuracy requirements and long effective data bits.

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