A Low Cost Imaging Displacement Measurement System for Spacecraft Thermal Vacuum Testing

2006 ◽  
Author(s):  
Brian Dempsey
Keyword(s):  
Measurement System ◽  
Low Cost ◽  
Displacement Measurement ◽  
Thermal Vacuum ◽  
Vacuum Testing

Low Cost Thermal Vacuum Testing Facility for Electronic Units

1988 ◽  
Vol 31 (6) ◽  
pp. 30-38
Author(s):  
Elhanan Dgany ◽  
Eytan Kochavi ◽  
Shimon Gruntman ◽  
Asher Kinan
Keyword(s):  
Low Cost ◽  
High Vacuum ◽  
Cost Effective ◽  
Acceptance Testing ◽  
Thermal Vacuum ◽  
Pumping System ◽  
Heating And Cooling ◽  
Performance Requirements ◽  
Testing Facility ◽  
Vacuum Testing

A thermal vacuum testing facility for electronic units has been specified, designed, and built. It is fully operational and performs its tasks—thermal vacuum qualification and acceptance testing of electronic units. All performance requirements and design details have been carefully evaluated on a cost-effective basis, resulting in achieving the design goal of low price (purchase, operation, and maintenance) together with ease of operation, maintenance simplicity, and upgrading options. The major cost saving originated from a detailed analysis of thermal vacuum requirements that resulted in low cost substitutes to the common thermal shroud, together with a thermal plate. The plate is actively thermally controlled by a circulating fluid that is temperature regulated by a commercial heating and cooling unit. The high vacuum pumping system includes a diffusion pump with backstreaming holders.

Thermal-vacuum testing of drilling and sampling tool

2000 ◽  
Author(s):  
M. Marchesi ◽  
R. Campaci ◽  
A. Nista ◽  
W. Prendin ◽  
S. Scarpa ◽  
...  
Keyword(s):  
Thermal Vacuum ◽  
Vacuum Testing

Dual interferometric displacement measurement system incorporating a Wollaston interferometer

1997 ◽  
Author(s):  
James E. Kemp ◽  
X. Q. Jiang ◽  
Yanong N. Ning ◽  
Andrew W. Palmer ◽  
Kenneth T. V. Grattan
Keyword(s):  
Measurement System ◽  
Displacement Measurement

scholarly journals High-Resolution Atmospheric Sensing of Multiple Atmospheric Variables Using the DataHawk Small Airborne Measurement System

2013 ◽  
Vol 30 (10) ◽  
pp. 2352-2366 ◽  
Author(s):  
Dale A. Lawrence ◽  
Ben B. Balsley
Keyword(s):  
High Resolution ◽  
Measurement System ◽  
Current System ◽  
Low Cost ◽  
Structure Constant ◽  
Turbulence Structure ◽  
Quality Of Data ◽  
Airborne Measurement ◽  
Atmospheric Measurement ◽  
Atmospheric Variables

Abstract The DataHawk small airborne measurement system provides in situ atmospheric measurement capabilities for documenting scales as small as 1 m and can access reasonably large volumes in and above the atmospheric boundary layer at low cost. The design of the DataHawk system is described, beginning with the atmospheric measurement requirements, and articulating five key challenges that any practical measurement system must overcome. The resulting characteristics of the airborne and ground support components of the DataHawk system are outlined, along with its deployment, operating, and recovery modes. Typical results are presented to illustrate the types and quality of data provided by the current system, as well as the need for more of these finescale measurements. Particular focus is given to the DataHawk's ability to make very-high-resolution measurements of a variety of atmospheric variables simultaneously, with emphasis given to the measurement of two important finescale turbulence parameters, (the temperature turbulence structure constant) and ɛ (the turbulent energy dissipation rate). Future sensing possibilities and limitations using this approach are also discussed.

scholarly journals Visual Measurement System for Wheel–Rail Lateral Position Evaluation

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1297
Author(s):  
Viktor Skrickij ◽  
Eldar Šabanovič ◽  
Dachuan Shi ◽  
Stefano Ricci ◽  
Luca Rizzetto ◽  
...  
Keyword(s):  
Measurement System ◽  
Inertial Sensor ◽  
Low Cost ◽  
Image Point ◽  
Low Velocity ◽  
Point Selection ◽  
Lateral Direction ◽  
Initial Field ◽  
Visual Measurement ◽  
Track Geometry

Railway infrastructure must meet safety requirements concerning its construction and operation. Track geometry monitoring is one of the most important activities in maintaining the steady technical conditions of rail infrastructure. Commonly, it is performed using complex measurement equipment installed on track-recording coaches. Existing low-cost inertial sensor-based measurement systems provide reliable measurements of track geometry in vertical directions. However, solutions are needed for track geometry parameter measurement in the lateral direction. In this research, the authors developed a visual measurement system for track gauge evaluation. It involves the detection of measurement points and the visual measurement of the distance between them. The accuracy of the visual measurement system was evaluated in the laboratory and showed promising results. The initial field test was performed in the Vilnius railway station yard, driving at low velocity on the straight track section. The results show that the image point selection method developed for selecting the wheel and rail points to measure distance is stable enough for TG measurement. Recommendations for the further improvement of the developed system are presented.

Development of Bioimpedance Sensors and Measurement System for Biomedical In-Vitro Applications

2021 ◽  
Vol 7 (2) ◽  
pp. 496-499
Author(s):  
Stadler B. Eng. Sebastian ◽  
Herbert Plischke ◽  
Christian Hanshans
Keyword(s):  
Measurement System ◽  
Low Cost ◽  
Measurement Data ◽  
Impedance Measurement ◽  
Microtiter Plate ◽  
Label Free ◽  
Single Chip ◽  
Do It Yourself ◽  
Store And Forward

Abstract Bioimpedance analysis is a label-free and easy approach to obtain information on cellular barrier integrity and cell viability more broadly. In this work, we introduce a small, low-cost, portable in vitro impedance measurement system for studies where a shadow-free exposure of the cells is a requirement. It can be controlled by a user-friendly web interface and can perform measurements automated and autonomously at short intervals. The system can be integrated into an existing IoT network for remote monitoring and indepth analyses. A single-board computer (SBC) serves as the central unit, to control, analyze, store and forward the measurement data from the single-chip impedance analyzer. Various materials and manufacturing methods were used to produce a purpose-built lid on top of a modified 24-well microtiter plate in a “do it yourself” fashion. Furthermore, three different sensor designs were developed utilizing anodic aluminum oxide (AAO) membranes and gold-plated electrodes. Preliminary tests with potassium chloride (KCl) showed first promising results.

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