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Developing a Custom Data Acquisition Software Package for a Self-contained Acoustic Testing Facility

Kolano and Saha Engineers Inc-Sagar Patil, Pranab Saha
Kolano and Saha Engineers Inc.-Richard Kolano
  • Technical Paper
  • 2019-01-1501
To be published on 2019-06-05 by SAE International in United States
This paper provides an overview of custom software developed for the sound generation, control and data acquisition of a self-contained acoustic testing facility system used for conducting random incidence sound absorption tests and sound transmission loss tests on small samples in accordance with SAE J2883 and J1400 standards, respectively. The paper discusses the thoughts behind developing user friendly algorithms and graphical user interfaces (GUI) for sound generation, control, data acquisition, and signal processing to obtain good data and precautions should there be any anomalies in the data.
 

Student Concept Vehicle: Development and Usability of an Innovative Holographic User Interface Concept and a Novel Parking Assistance System Concept

BMW Group-Joerg Schulte, Julian Weber
Clemson University-Lauren Mims, Johnell Brooks, Breno Schwambach, Robert Knizek, Casey Jenkins, Mitchell Beckman
  • Technical Paper
  • 2019-01-0396
To be published on 2019-04-02 by SAE International in United States
The Deep Orange program is a concept vehicle development program focused on providing hands-on experience in design, engineering, prototyping and production planning as part of students’ two-year MS graduate education. Throughout this project, the team was challenged to create innovative concepts during the ideation phase as part of building the running vehicle. This paper describes the usability studies performed on two of the vehicle concepts that require driver interaction.One concept is a human machine interface (HMI) that uses a holographic companion that can act as a concierge for all functions of the vehicle. After creating a prototype using existing technologies and developing a user interface controlled by hand gestures, a usability study was completed with older adults. The results suggest the input method was not intuitive. Participants demonstrated better performance with tasks using discrete hand motions in comparison to those that required continuous motions. The data were helpful to understand the challenges of untrained users interacting with a new HMI system.The second concept is a parking assist system designed to help other drivers. A usability…
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A Multi-Domain Component Based Modeling Toolset for Dynamic Integrated Power and Thermal System Modeling

PC Krause & Associates-Patrick Thomas McCarthy, Kevin McCarthy, Maher Hasan, Michelle Boyd, Michael Chang, Eric Walters
US Air Force Research Laboratory-Nicholas Niedbalski
Published 2019-03-19 by SAE International in United States
Design of modern aircraft relies heavily on modeling and simulation for reducing cost and improving performance. However, the complexity of aircraft architectures requires accurate modeling of dynamic components across many subsystems. Integrated power and thermal modeling necessitates dynamic simulations of liquid, air, and two-phase fluids within vapor cycle system components, air cycle machine and propulsion components, hydraulic components, and more while heat generation of many on-board electrical components must also be precisely calculated as well. Integration of these highly complex subsystems may result in simulations which are too computationally expensive for quickly modeling extensive variations of aircraft architecture, or will require simulations with reduced accuracy in order to provide computationally inexpensive models. As such, a need for software toolsets with the ability to model complex aircraft architectures with accurate calculations while maintaining high computational speeds is apparent. This paper details the development of the ATTMOSphere toolset which enables modeling of electrical, mechanical, thermal, fluid flow and heat transfer across a range of components applicable to integrated power and thermal systems. Graphical user interfaces provide user-friendly…
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A Dynamic Two-Phase Component Model Library for High Heat Flux Applications

PC Krause & Associates-Stephen Hodson, Kevin McCarthy, Patrick McCarthy
Purdue University-Issam Mudawar
Published 2019-03-19 by SAE International in United States
Pumped two-phase systems using mini or microchannel heat sink evaporators are prime candidates for high heat flux applications due to relatively low pumping power requirements and efficient heat removal in compact designs. A number of challenges exist in the implementation of these systems including: ensuring subcooled liquid to the pump to avoid cavitation, avoiding dry out conditions in heat exchangers that can lead to failures of the components under cooling, and avoiding flow instabilities that can damage components in an integrated system. To reduce risk and cost, modeling and simulation can be employed in the design and development of these complex systems, but such modeling must include the relevant behavior necessary to capture the above dynamic effects. To this end, a component model library has been developed in this work that demonstrates the ability to model dynamic and steady-state flow characteristics commonly observed in pumped two-phase refrigeration systems using microchannel heat sinks. The library is comprised of components that can either be used to model individual components or be coupled with other components to form…
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Computer-Controlled Exercise Equipment

  • Magazine Article
  • TBMG-33943
Published 2019-03-01 by Tech Briefs Media Group in United States

While a wide variety of computer-controlled exercise machines for training and rehabilitation exist — some of which can be automatically adjusted to vary resistance or incline — such systems provide for preprogrammed changes in load or resistance. What is needed is a system that overcomes the limitations of the existing robotic rehabilitation systems by providing a training and/or rehabilitation system that adapts a resistance or force applied to a user-interactive element in response to the user's interaction.

 
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Understanding Bluetooth Mesh Networking

  • Magazine Article
  • TBMG-33885
Published 2019-03-01 by Tech Briefs Media Group in United States

Bluetooth technology is focused on short-range wireless connectivity. Most of us know the Bluetooth standard as the way we connect a phone to our car or a headset for hands-free operation. But Bluetooth is much more than that. Originally designed as a replacement for wired serial connectivity such as RS-232C, Bluetooth now supports almost three dozen different profiles that include hands-free devices, human interface devices, phone book profile, and many more.

 
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Standard Practice for Human Systems Integration

G-45 Human Systems Integration
  • Aerospace Standard
  • SAE6906
  • Current
Published 2019-02-08 by SAE International in United States
This Human Systems Integration (HSI) Standard Practice identifies the Department of Defense (DoD) approach to conducting HSI programs as part of procurement activities. This Standard covers HSI processes throughout design, development, test, production, use, and disposal. Depending on contract phase and/or complexity of the program, tailoring should be applied. The scope of this standard includes prime and subcontractor HSI activities; it does not include Government HSI activities, which are covered in the DoD HSI Handbook. HSI programs should use the latest version of standards and handbooks listed below, unless a particular revision is specifically cited in the contract.
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Touch Interactive Display Systems: Human Factors Considerations, System Design and Performance Guidelines

G-10TDS Touch Interactive Display Systems Committee
  • Aerospace Standard
  • ARP60494
  • Current
Published 2019-02-06 by SAE International in United States
This Aerospace Recommended Practice (ARP) addresses direct touch interactive electronic display systems installed in the cockpit/flight deck for use by pilots. Direct touch refers to interactivity where the display screen is the input surface. This entire direct interactive electronic display system is referred to as the touch system throughout this document and covers those items related to direct interactive touch on display devices. In cases where only the display and touch device are being considered, this is referred to as the touch screen. The ARP covers system design guidelines as well as the considerations and recommendations for system performance and human factors. This ARP is intended to cover systems installed in 14 CFR Part 23, 25, 27, and 29 aircraft. As an ARP this document collects what are considered good practices by developers, users, and regulators of touch systems. The state of touch technology and the application of that technology is still evolving. As a result, it is premature to develop quantitative guidance for some key touch characteristics. In addition to the recommendations, this document…
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Agricultural and Forestry Off-Road Machinery Control and Communication Network

Truck Bus Control and Communications Network Committee
  • Ground Vehicle Standard
  • J1939/2_201901
  • Current
Published 2019-01-14 by SAE International in United States
SAE J1939-2 specifies the requirements for application of SAE J1939 in agricultural and forestry equipment. This document specifies the series of documents within the set of SAE J1939 documents that are applicable to agricultural and forestry equipment and provides further requirements for this industry. The SAE and ISO groups have cooperated to define agricultural and forestry networks in a manner to allow compatibility of ECUs and messaging protocols between the A&F and the T&B networks.
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Computer Detects and Understands Body Language

  • Magazine Article
  • TBMG-33609
Published 2019-01-01 by Tech Briefs Media Group in United States

Detecting the nuances of nonverbal communication between individuals will allow robots to serve in social spaces, enabling them to perceive what people around them are doing, what moods they are in, and whether they can be interrupted. A self-driving car could get an early warning that a pedestrian is about to step into the street by monitoring body language. Enabling machines to understand human behavior also could enable new approaches to behavioral diagnosis and rehabilitation for conditions such as autism, dyslexia, and depression.