scholarly journals IMPLEMENTATION OF SYMMETRIC CRYPTOGRAPHY IN EMBEDDED MEASUREMENT SYSTEMS

2015 ◽  
pp. 66-76
Author(s):  
Wiesław Winiecki ◽  
Piotr Bilski
Keyword(s):  
Embedded Systems ◽  
Measurement System ◽  
Point Of View ◽  
Distributed Environments ◽  
Future Prospects ◽  
Symmetric Cryptography ◽  
Measuring Systems ◽  
Measurement Systems ◽  
Aes Algorithm ◽  
Distributed Measurement

The paper presents the implementation of the symmetric cryptography in the distributed measurement system. Motivation for increasing the security in such systems is presented. Next, fundamentals of cryptography from the measuring systems’ point of view are introduced. The role and structure of embedded systems in modern distributed environments is explained. As the example of presented problems, implementation of the AES algorithm on the Compact RIO module is presented and tested for both efficiency and accuracy. The paper is supplemented with conclusions and future prospects of the approach.

scholarly journals The problems in in the qualification of measuring systems abilities in the investigation performance, the analysis on the example of precision workpieces in the automotive industry

2018 ◽  
Vol 19 (9) ◽  
pp. 147-151
Author(s):  
Magdalena Garbaciak ◽  
Emilia Bachtiak-Radka ◽  
Sara Dudzińska ◽  
Daniel Grochała
Keyword(s):  
Surface Roughness ◽  
Measurement System ◽  
Automotive Industry ◽  
Point Of View ◽  
Measuring Systems ◽  
Measurement Systems ◽  
Measurement Plan ◽  
Standard Edition

The manuscript introduce the problems in the qualification of measuring systems abilities in the investigation in the surface roughness of precision workpieces in the automotive industry. The research were carried out in accordance with the measurement plan. Next, based on the collected results for selected SPG parameters, the analysis and assessment of the capacity indicators were carried out in accordance with the procedure 2 of statistical qualification of measurement systems (in accordance with the MSA 2010 standard edition 4, ARM, tolerance). Two products were analyzed of the cylinder fragment and labyrinth valves of automatic gearboxes. The analysis gave a series of information on errors from the point of view of reproducibility and recurrence on the ability of the measurement system - the analyzes were carried out for the needs of the automotive industry.

Surviving the Management Game: Workload Measurement Systems in a Cost-Conscious Environment

1993 ◽  
Vol 60 (1) ◽  
pp. 23-28 ◽  
Author(s):  
Maureen Wright ◽  
Elizabeth Scott ◽  
Rhonda Cockerill
Keyword(s):  
Health Care ◽  
Occupational Therapy ◽  
Measurement System ◽  
Point Of View ◽  
Health Science ◽  
Management Tools ◽  
Measurement Systems ◽  
Client Care ◽  
Workload Measurement ◽  
Science Centre

Using a procedure-based occupational therapy workload measurement system developed at, and applied by, Sunnybrook Health Science Centre, this paper explores the objectives of such a system from the point of view of the occupational therapy manager. It also takes into account the synergistic relationship between the occupational therapist and the administrative/business aspect of health care, paying special attention to past and present trends in health-care accountability. In this paper it is argued that occupational therapy managers must relate their procedures and overhead costs to actual client care, if they are to be included in programme management and client costing. The process used by occupational therapy to describe its own procedures for the system is outlined. The system was then developed in conjunction with other institutional, financial and management tools for the client cost conversion process. By using a procedure based workload measurement system, occupational therapy is able to accurately describe client costing, thereby articulating our role in client care.

scholarly journals Performance of snow density measurement systems in snow stratigraphies

2020 ◽  
Author(s):  
Jiansheng Hao ◽  
Farong Huang ◽  
Ditao Cheng ◽  
Shuyong Mu ◽  
Lanhai Li
Keyword(s):  
Dielectric Permittivity ◽  
Measurement System ◽  
Density Measurement ◽  
Snow Density ◽  
Gravimetric Measurement ◽  
Measuring Systems ◽  
Measurement Systems ◽  
Permittivity Measurement ◽  
Wet Snow ◽  
Precision And Accuracy

Abstract. Gravimetric and dielectric permittivity measuring systems are applied to measure snow density, but few studies have addressed differences between the two measurement systems under complex snowpack conditions. A field experiment was conducted to measure snow density using the two measurement systems in different stratigraphical layers consisting of fragmented precipitation particles (DF), faceted crystals particles (FC), depth hoar (DH) and melt forms (MF), and the performance of measurement systems were analyzed and compared. The results showed that the measured density from the gravimetric measurement system was significantly higher than from the dielectric permittivity measurement system. The precision and accuracy of the gravimetric measurement system was higher than that of the dielectric permittivity measurement system in the DF, FC and DH layers, but the precision and accuracy of two measurement systems were similar in the MF layers. By comparing the precision and accuracy as well as merits and drawbacks of the two measurement systems, it was concluded that using gravimetric measurement system during dry snow and dielectric permittivity measurement system during wet snow will help surveyors obtain more reliable data. Furthermore, the study provided an approach which will facilitate the integration of the data obtained from different studies with different measurement systems into global databases.

Reliability in Low Emission Wireless Measurement Networks

2015 ◽  
Vol 237 ◽  
pp. 107-111
Author(s):  
Łukasz Zabłudowski ◽  
Beata Marciniak ◽  
Damian Ledziński ◽  
Mirosław Maszewski
Keyword(s):  
Measuring Systems ◽  
Measurement Systems ◽  
Measuring Devices ◽  
Large Numbers ◽  
Low Emission ◽  
Production Environments ◽  
Safety Parameters ◽  
Wireless Measurement ◽  
Distributed Measurement Systems ◽  
Distributed Measurement

Wireless sensor networks called WSN’s increasingly find their wide application in various distributed measurement systems. Currently, many manufacturers focus on implementation of these devices in energy meters. In addition these devices are increasingly being considered as a system that do not carry big financial effort to be implement as a measuring systems of key safety parameters in production environments. Such environments are becoming an important element to ensure reliable transmission between measuring devices broadcasting. Another challenge in the systems under consideration is to provide low emissivity in the network. The low emissivity provides less interference between operating devices. This premise has an important effect on networks with large numbers of nodes.

scholarly journals Development of Thermal Performance Metrics for Direct Gas-Fired Circulating Heaters

Agriculture ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 588
Author(s):  
Benjamin C. Smith ◽  
Brett C. Ramirez ◽  
Steven J. Hoff
Keyword(s):  
Mass Flow ◽  
Measurement System ◽  
Thermal Efficiency ◽  
Performance Metrics ◽  
Standardized Test ◽  
Flow System ◽  
Standard Test ◽  
Testing System ◽  
Measurement Systems ◽  
Selection Of

Many climate-controlled agricultural buildings use direct gas-fired circulating heaters (DGFCH) for supplement heat. There is no standardized test to calculate thermal efficiency for these heaters. This study aimed to develop a measurement system and analytical analysis for thermal efficiency, quantify the measurement uncertainty, and assess economics of DGFCH efficiency. The measurement system developed was similar to the ASHRAE 103 standard test stand with adaptations to connect the apparatus to the DGFCH. Two different propane measurement systems were used: input ratings < 30 kW used a mass flow system and input ratings > 30 kW used a volumetric gas meter. Three DGFCHs (21.9, 29.3, 73.3 kW) were tested to evaluate the system. Thermal efficiencies ranged from 92.4% to 100.9%. The resulting uncertainty (coverage factor of 2; ~95% Confidence Interval) ranged from 13.1% to 30.7% for input ratings of 56.3 to 11.4 kW. Key sources of uncertainty were propane and mass flow of air measurement. The economic impact of 1% difference in thermal efficiency ranged from USD $61.3 to $72.0 per heating season. Refinement of the testing system and procedures are needed to reduce the uncertainty. The application of this system will aid building designers in selection of DGFCHs for various applications.

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