Analysis of key technologies for virtual instruments metrology

Guixiong Liu; Qingui Xu; Furong Gao; Qiuju Guan; Qiang Fang

doi:10.1117/12.819751

31 December 2008 Analysis of key technologies for virtual instruments metrology

Guixiong Liu, Qingui Xu, Furong Gao, Qiuju Guan, Qiang Fang

Proceedings Volume 7130, Fourth International Symposium on Precision Mechanical Measurements; 71305B (2008) https://doi.org/10.1117/12.819751
Event: Fourth International Symposium on Precision Mechanical Measurements, 2008, Anhui, China

Abstract

Virtual instruments (VIs) require metrological verification when applied as measuring instruments. Owing to the software-centered architecture, metrological evaluation of VIs includes two aspects: measurement functions and software characteristics. Complexity of software imposes difficulties on metrological testing of VIs. Key approaches and technologies for metrology evaluation of virtual instruments are investigated and analyzed in this paper. The principal issue is evaluation of measurement uncertainty. The nature and regularity of measurement uncertainty caused by software and algorithms can be evaluated by modeling, simulation, analysis, testing and statistics with support of powerful computing capability of PC. Another concern is evaluation of software features like correctness, reliability, stability, security and real-time of VIs. Technologies from software engineering, software testing and computer security domain can be used for these purposes. For example, a variety of black-box testing, white-box testing and modeling approaches can be used to evaluate the reliability of modules, components, applications and the whole VI software. The security of a VI can be assessed by methods like vulnerability scanning and penetration analysis. In order to facilitate metrology institutions to perform metrological verification of VIs efficiently, an automatic metrological tool for the above validation is essential. Based on technologies of numerical simulation, software testing and system benchmarking, a framework for the automatic tool is proposed in this paper. Investigation on implementation of existing automatic tools that perform calculation of measurement uncertainty, software testing and security assessment demonstrates the feasibility of the automatic framework advanced.

Citation Download Citation

Guixiong Liu, Qingui Xu, Furong Gao, Qiuju Guan, and Qiang Fang "Analysis of key technologies for virtual instruments metrology", Proc. SPIE 7130, Fourth International Symposium on Precision Mechanical Measurements, 71305B (31 December 2008); https://doi.org/10.1117/12.819751

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