Contribution to the Design of Hospital Bed: Systematic for Surveying the Design Requirements and Functional Requirements for Synthesis of Mechanism

2017 ◽  
pp. 652-662 ◽  
Author(s):  
Elias Renã Maletz ◽  
Henrique Simas ◽  
Rodrigo Luís Pereira Barreto ◽  
Daniel
Keyword(s):  
Functional Requirements ◽  
Hospital Bed ◽  
Design Requirements ◽  
Synthesis Of Mechanism

scholarly journals Wireless Communication Technologies for Safe Cooperative Cyber Physical Systems

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 4075 ◽  
Author(s):  
Ali Balador ◽  
Anis Kouba ◽  
Dajana Cassioli ◽  
Fotis Foukalas ◽  
Ricardo Severino ◽  
...  
Keyword(s):  
Wireless Communication ◽  
Communication Technologies ◽  
Cyber Physical Systems ◽  
Use Cases ◽  
Functional Requirements ◽  
Physical Systems ◽  
Safety Design ◽  
Standardization Process ◽  
Design Requirements ◽  
Eu Project

Cooperative Cyber-Physical Systems (Co-CPSs) can be enabled using wireless communication technologies, which in principle should address reliability and safety challenges. Safety for Co-CPS enabled by wireless communication technologies is a crucial aspect and requires new dedicated design approaches. In this paper, we provide an overview of five Co-CPS use cases, as introduced in our SafeCOP EU project, and analyze their safety design requirements. Next, we provide a comprehensive analysis of the main existing wireless communication technologies giving details about the protocols developed within particular standardization bodies. We also investigate to what extent they address the non-functional requirements in terms of safety, security and real time, in the different application domains of each use case. Finally, we discuss general recommendations about the use of different wireless communication technologies showing their potentials in the selected real-world use cases. The discussion is provided under consideration in the 5G standardization process within 3GPP, whose current efforts are inline to current gaps in wireless communications protocols for Co-CPSs including many future use cases.

Design Requirements for a Tendon Rehabilitation Robot: Results From a Survey of Engineers and Health Professionals

2010 ◽  
Author(s):  
Volkan Patoglu ◽  
Gurdal Ertek ◽  
Ozgur Oz ◽  
Deniz Zoroglu ◽  
Gul Kremer
Keyword(s):  
Health Professionals ◽  
Quality Function Deployment ◽  
Rehabilitation Robot ◽  
Relative Importance ◽  
Functional Requirements ◽  
Strong Correlations ◽  
Customer Requirements ◽  
Rehabilitation Robots ◽  
Survey Results ◽  
Design Requirements

Exoskeleton type finger rehabilitation robots are helpful in assisting the treatment of tendon injuries. A survey has been carried out with engineers and health professionals to further develop an existing finger exoskeleton prototype. The goal of the study is to better understand the relative importance of several design criteria through the analysis of survey results and to improve the finger exoskeleton accordingly. The survey questions with strong correlations are identified and the preferences of the two respondent groups are statistically compared. The results of the statistical analysis are interpreted and insights obtained are used to guide the design process. The answers to the qualitative questions are also discussed together with their design implications. Finally, Quality Function Deployment (QFD) has been employed for visualizing these functional requirements in relation to the customer requirements.

PERFORMANCE STANDARDS FOR SPILL PREVENTION AT OIL STORAGE FACILITIES

2008 ◽  
Vol 2008 (1) ◽  
pp. 217-219
Author(s):  
Gary Yoshioka ◽  
Julie Reber ◽  
Ryan Thompson ◽  
Joan Tilghman
Keyword(s):  
Oil Pollution ◽  
Pollution Prevention ◽  
Performance Standards ◽  
Performance Standard ◽  
Executive Order ◽  
Functional Requirements ◽  
Oil Storage ◽  
Design Requirements ◽  
Standard Sets ◽  
A Performance

ABSTRACT Performance standards state requirements in terms of required results, with criteria for verifying compliance but without stating the methods for achieving required results. A performance standard may define functional requirements for the item, operational requirements, or interface and interchangeability characteristics. A performance standard may be viewed in juxtaposition to a prescriptive standard, which may specify design requirements, such as materials to be used, how a requirement is to be achieved, or how an item is to be fabricated or constructed. A performance standard for spill prevention specifies the outcome required, but leaves the specific measures to achieve that outcome up to the discretion of the regulated facility. In contrast to a design standard or a technology-based standard that specifies exactly how to achieve compliance, a performance standard sets a goal and lets each regulated facility owner or operator decide how to meet it. Since 1993, U.S. Federal regulations complied with Executive Order 12866, which specifies the use of performance standards. Thus, it is not surprising that the 2002 revisions of U.S. Environmental Protection Agency'S Oil Pollution Prevention regulation, which was first published in 1973, included several performance-based provisions. The regulation requires nearly every significant oil storage facility in the nation to prepare a Spill Prevention Control and Countermeasure Plan. Regulatory provisions that had set prescriptive standards or design requirements in 1973, allow much more flexibility today. This poster presentation briefly examines the trend toward performance-based environmental regulations in the U.S. and the evolution of the Oil Pollution Prevention regulation.

Smart Home System Design Based on Internet of Things

2014 ◽  
Vol 602-605 ◽  
pp. 3808-3812 ◽  
Author(s):  
Zhen Wang
Keyword(s):  
Internet Of Things ◽  
System Design ◽  
Smart Home ◽  
Development Trend ◽  
Functional Requirements ◽  
Key Technology ◽  
Key Technologies ◽  
Embedded Processing ◽  
Design Requirements ◽  
Household System

As sensor, semiconductor, embedded processing, such as the development of technology, smart home system is more and more get people's attention, make household intelligent has become a development trend. This paper analyzes the key technologies of Internet of things intelligent household the functional requirements, and the key technology of Internet of things intelligent household, expounds the principle and design requirements of the system, on this basis, design a set of relatively complete Internet of things intelligent household system. The smart home system designed in this paper can realize monitoring, alarm, control and reflect the intelligent household convenience and practicability, has wide application prospect.

scholarly journals Operational and tegnological requirements for the profitable provision of rail freight transport

2017 ◽  
Vol 36 (1) ◽  
Author(s):  
Wessel J. Pienaar
Keyword(s):  
Freight Transport ◽  
Rail Transport ◽  
Transport Systems ◽  
Functional Requirements ◽  
Market Segments ◽  
Industrial Countries ◽  
Rail Freight ◽  
Comparative Cost ◽  
Design Requirements ◽  
Operational Methods

This article provides an overview of the most pertinent operational and design requirements of rail freight transport technology that could be instrumental in the profitable participation of rail transport in an economically deregulated freight transport market. The following three aspects are addressed: (1) The market segments that are serviced profitably by rail transport in industrial countries; (2) comparative cost of rail transport and the specific operational methods employed to make rail transport more cost advantageous; and (3) the most pertinent technological requirements set upon rail transport systems to operate commercially viably. Regarding technological requirements, the following aspects are elaborated upon: (1) train types and purpose-built wagons to appropriately serve specific market segments; (2) the type of freight terminals employed to effectively support rail transport operations; and (3) the types of handling equipment needed to enable rail transport to operate smoothly. The purpose-built wagon models and the types of train compositions to optimally adhere to rail transport operators’ specific needs, as well as the the most important factors that underlie wagon design, are discussed. Subsequently the functional requirements of the main terminal facilties that receive freight trains are discussed. Lastly, the handling equipment needed to load, unload and transload transportable freight on, from and between wagons and other modes of transport swiftly, safely and at lowest cost per freight unit are discussed.

scholarly journals PAKAIAN SERAGAM PERAWAT: SEBUAH RANCANGAN PENELITIAN

CORAK ◽  
2018 ◽  
Vol 7 (1) ◽  
pp. 79-88
Author(s):  
Deni Arifiana ◽  
G.R. Lono Lastoro Simatupang ◽  
SP. Gustami
Keyword(s):  
Uniform Design ◽  
Professional Role ◽  
Professional Roles ◽  
Functional Design ◽  
Functional Requirements ◽  
Clothing Design ◽  
Professional Needs ◽  
Design Requirements

The nurse's uniform is the main supporter of the nurse in performing her professional roles at the hospital.Therefore, the nurse's uniform is designed to meet the needs of her professional role in the hospital, although in practice the nurse's uniform is not always able to function properly.This article aims to identify the variables that need to be considered in the study of professional uniform design, especially nurses. The hope, this paper can contribute to the design of similar studies. Assessment of the design of nurse uniforms is done through literature and document studies, with the scope of the in-patient nurses' uniforms.This article shows that the variables that need to be considered in the study of professional uniform design, especially the nurse, cover the professional needs and criteria for the design requirements of professional uniform. The stages that need to be done in analyzing the functional design of professional uniform are grouped into 4 stages, including: stage identifying the needs of the profession; determine the functional requirements of the profession; establishing criteria for the design of professional uniforms; and the stage reflects the functional needs of the profession into the clothing design. Pakaian seragam perawat merupakan pendukung utama perawat dalam menjalankan aktifitas peran profesinya di rumah sakit. Maka dari itu, pakaian seragam perawat dirancang untuk memenuhi kebutuhan profesinya di rumah sakit, kendati pada praktiknya pakaian seragam perawat tidak selalu dapat berfungsi sebagaimana mestinya.Artikel ini bertujuan untuk mengidentifikasi variabel-variabel yang perlu dipertimbangkan dalam penelitian desain pakaian seragam profesi, khususnya perawat. Harapannya, tulisan ini dapat berkontribusi bagi perancangan penelitian-penelitian sejenis. Pengkajian terhadap desain pakaian seragam perawat dilakukan melalui studi literatur dan dokumen, dengan ruang lingkup pada pakaian seragam perawat rawat inap.Tulisan ini menunjukkan bahwa variabel-variabel yang perlu dipertimbangkan dalam penelitian desain pakaian seragam profesi (perawat), mencakup kebutuhan-kebutuhan profesi dan kriteria persyaratan desain pakaian seragam profesi. Adapun tahapan yang perlu dilakukan dalam menganalisis fungsional desain pakaian seragam profesi dikelompokkan ke dalam 4 tahap, meliputi: tahap mengidentifikasi kebutuhan profesi; menetapkan kebutuhan fungsional profesi; menetapkan kriteria desain pakaian seragam profesi; dan tahap merefleksikan kebutuhan fungsional profesi ke dalam desain pakaian. Kata-kata kunci: pakaian-seragam, perawat, rancangan-penelitian

Towards a Model-Based Framework for Linking Design Requirements to the Functional Layout of the Product

2001 ◽  
Author(s):  
Patrik Nilsson ◽  
Björn Fagerström
Keyword(s):  
Quality Function Deployment ◽  
Functional Requirements ◽  
Industrial Case Study ◽  
Proposed Model ◽  
Functional Layout ◽  
Design Requirements ◽  
Stakeholder Needs ◽  
The Voice ◽  
Early Phases

Abstract The aim of this paper is to bridge the gap between the requirements and the functional layout of a product during the early phases of product development. During these early phases, it is important to capture the customer’s desires in order to achieve success in the market. A common methodology for this is Quality Function Deployment (QFD). However, we argue that it is important to consider different stakeholder needs and not only the ‘voice of the customer’ to create a well-balanced product. The proposed model uses a QFD with a broader approach in which different stakeholders are considered. The needs from the stakeholders are divided into functional requirements and non-functional requirements (constraints), and linked to the functional layout. The model will support the decision-making process and help the designer balance the interests of different stakeholders and the related functions, resulting in a more balanced product. The model has been applied in an industrial case study.

The Importance of Design Validation in Global Health Surgical Innovation

2018 ◽  
Vol 25 (6) ◽  
pp. 563-569 ◽  
Author(s):  
Tyson Schwab ◽  
Bernhard Fassl ◽  
John Langell
Keyword(s):  
Population Based ◽  
User Needs ◽  
Functional Requirements ◽  
Longitudinal Assessment ◽  
Design Quality ◽  
Design Validation ◽  
Medical Needs ◽  
Design Specifications ◽  
Market Requirements ◽  
Design Requirements

Introduction. Medical technology development requires an understanding of user needs and environmental requirements. Accurately capturing market requirements, user needs, and design specifications are multifactorial and challenging. On-site observation and design validation may lead to development of more effective solutions to improve health care. This study was designed to evaluate the value of design validation for medical devices developed to address global medical needs. Methods. Observational comparative analysis and survey studies were used to collect data involving multiple stakeholder viewpoints. User needs, market requirements, and design inputs were created using standard operating procedures in accordance with US FDA—21 CFR 820. Design requirements included user needs, product description, regulatory standards, functional requirements, performance and physical requirements, use environment, human-system interfacing, conceptual designs, and market analysis. A random population-based cohort sample in India was used to conduct a semi-longitudinal assessment of exposure-outcome relations from device prototype use and design validation. Seventy-two subjects were observed for a 4-week duration. After validation, each component of the traceability matrix was either marked “no change,” “significant change,” or “new addition” as defined in the methods section. Results. A total of 198 design requirements and specifications were evaluated for each device. Eleven percent of the final design requirements and specifications were “new additions” and 12% were “significant changes.” Conclusion. Assessment of design requirements and specifications in the global environment improves medical device design quality and safety. This study validates environmental immersion in the target use environment early to ensure validation of user needs and design specifications during design conception.

Tolerance-based Variations in Solid Modeling

2003 ◽  
Vol 3 (4) ◽  
pp. 345-352 ◽  
Author(s):  
G. Moroni ◽  
W. Polini
Keyword(s):  
Tolerance Analysis ◽  
Design Stage ◽  
Tolerance Design ◽  
Functional Requirements ◽  
Mechanical Parts ◽  
Assembly Tolerance ◽  
Geometric Tolerances ◽  
Design Requirements ◽  
Optimal Values ◽  
Definition Of

Information on tolerances and attributes of mechanical parts and assemblies is crucial for many activities in a product’s life cycle. Tolerance design is a complex task because many factors (functional, technological and economical) should be considered. It is an iterative process, starting from a first tolerances assignment and ending with the definition of their optimal values. Once all tolerances have been assigned to each part of an assembly, tolerance analysis is performed. This stage aim is to evaluate if the combined effects of the assigned tolerances let the design requirements be met. Then, feasible and economical aspects are considered on the basis of both available processes and cost evaluations. The whole tolerance design stage is usually defined as tolerance synthesis. The focus of this work is the discussion of the algorithms to model the geometrical variations, of each part of an assembly, allowed by geometric tolerances. This involves the change of the boundary nominal representation of a part face on the basis of the assigned dimensional and geometric tolerances. At present, the developed algorithms are able to simulate flatness, location and orientation. The modified parts, generated by tolerance simulation, may be used to evaluate the overall assemblability and, then, to verify the assembly functional requirements.

Global In-Place System Behavior of Flexible Pipeline on Seabed

2015 ◽  
Author(s):  
Maša Brankovic ◽  
Stian Vervik ◽  
Erik Løken ◽  
Per Damsleth
Keyword(s):  
System Design ◽  
Failure Modes ◽  
Compressive Force ◽  
Pipeline System ◽  
Fe Model ◽  
Functional Requirements ◽  
Flexible Pipe ◽  
Axial Compressive Force ◽  
Global Buckling ◽  
Design Requirements

A pipeline system consists of the flexible pipe and all associated ancillary components up to the connecting components at battery limits. The global system design deals with aspects related to the overall flexible pipe system — not cross-section or component design. Key system design issues to address are specified in ISO 13628-11:2007 (API 17B) and include general system design requirements, flowline design requirements, and interfaces involving different contractors and suppliers. Unlike unbonded flexible risers that operate in tension, flexible pipe laying on the seabed will be subject to compressive forces and global buckling as for rigid pipelines. The global flexible pipeline system design will use relevant design codes such as ISO 13628-11:2007 and API 17B / 17J. Yet, the terminology and what such design encompasses can be interpreted differently amongst the community of flexible designers, installers and operators. Failure modes, for example, are not perceived in the same way. While axial compressive force may not be allowed for a riser design, it is a normal flexible pipe response to expansion when pressurized on the seabed. Pull-in and connection forces and moments may be perceived as maximum loads by installers and subsea equipment suppliers but the pressure-induced hydrotest and operational loads may exceed these and overstress the piping leading to a HISC failure. The system functional requirements for flexible pipelines are similar to rigid lines but when it comes to a flowline laid on the seabed, exposed to pressure and temperature, the methodology for establishing accurate predictable global behaviour is still under development in the industry. To perform the global in-place design of a flexible flowline, a detailed understanding of the effects of pressure and temperature on the unbonded flexible construction with respect to its bending stiffness and expansion and the limiting criteria stipulated by the manufacturer is needed. The flexible’s behaviour can be simulated using a 3D FE model capturing the effects of seabed surface variations, interaction with soil, and entire load history from installation, to flooding and hydrotest to filling with product at a range of pressures and temperatures including start-up shut-down cycles. Whereas general requirements are stipulated in API 17, specific guidelines applicable to global buckling design are found in DNV-RP-F110 for rigid pipelines. This predictive analysis methodology using risk-based design criteria provides the basis for a robust design that can accommodate large variations in installation tolerances, uneven seabed, varying soils, etc., while providing all concerned with a sound understanding of the flexible behavior and interface loads throughout its design life.

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