scholarly journals INCREASING ACCURACY AND PROVIDING RELIABILITY OF OPTOMECHANICAL DEVICES IN THE PROCESS OF MEASUREMENT OPERATION

2019 ◽  
Vol 24 (1) ◽  
pp. 236-245
Author(s):  
Valeric S. Ayrapetian ◽  
◽  
George A. Kurilenko ◽  
Keyword(s):  
Measurement Operation

scholarly journals Wearable bioimpedance for continuous and context-aware clinical monitoring

2020 ◽  
Author(s):  
Walter Karlen ◽  
Abhilash Guru Dutt ◽  
Michaela Verling
Keyword(s):  
Clinical Decision Making ◽  
Clinical Decision ◽  
Accelerometer Data ◽  
Non Invasive ◽  
Standardized Protocol ◽  
Current Consumption ◽  
Wide Range ◽  
Measurement Operation ◽  
Total Body ◽  
Commercial Device

<div>Bioimpedance monitoring provides a non-invasive,</div><div>safe and affordable opportunity to monitor total body water for a wide range of clinical applications. However, the measurement is susceptible to variations in posture and movement. Existing devices do not account for the variations and are therefore unsuitable to perform continuous measurements to depict trend changes. We developed a wearable bioimpedance monitoring system with embedded real-time posture detection using a distributed accelerometer network. We tested the device on 14 healthy volunteers following a standardized protocol of posture change and compared the obtained measurements with an existing commercial device. The impedance measured with both systems had a high correlation (r>0.98) and a Bland-Altman analysis revealed a bias of -4.5 and limits of agreement of -30 and 21. Context-awareness was achieved with processing accelerometer data placed at the upper and lower leg with an accuracy >95%. The calculated current consumption is as low as 10 mA during continuous measurement operation, suggesting that without recharge the system can be used for multiple days. The proposed motion-aware design will enable the measurement of relevant bioimpedance parameters continuously over long periods and aid in informed clinical decision making.</div>

CAIP Application in OMM Operation for Box Primitive Feature: Inpection Code Generation for on Machine Measurement Operation

2014 ◽  
Vol 660 ◽  
pp. 883-888 ◽  
Author(s):  
Muldani Hendrawan Yogi ◽  
Yuwana M. Yatna ◽  
Sri Raharno
Keyword(s):  
Quality Control ◽  
Code Generation ◽  
Machining Process ◽  
Inspection Planning ◽  
Cnc Machine ◽  
Surface Geometry ◽  
Reconstruction Process ◽  
Primitive Feature ◽  
Measurement Operation ◽  
Design Division

The aims of this research is to build CAIP systems on OMM operation which have an ability to measure workpiece automatically based on drawing data from design division at a machine. The flow of information between each part becomes important as the design of the drawing data from design division to production division or quality control. CAIP system (Computer Aided Inspection Planning) is expected to ensure the flow of drawing information to quality control without any changed even though the amount of data that a lot. CAIP system use early drawing data from the design division. The type of drawing data which is used by each CAD software is STEP drawing data. STEP data consists of products information such as surface geometry, line, point, and direction of the vector surface. The information that can be used to build a CAIP system is a feature. Therefore, a feature reconstruction process is necessary based on the data STEP geometry information. Feature types which is used in this study are a type of box primitive feature. A Probe, a measuring instrument, can be operated in CMM (Coordinate Measurement Machine) and CNC machine. A product measuring on CNC machine during or after machining process called OMM (On Machine Measurement) operation. As a result, measuring can be performed without moving the product from the machine. In this research, 5 Axis CNC machine with Heidenhain DMU150 iTNC530 controller is used.

Statistical Treatment of Nominal Numbers

1971 ◽  
Vol 29 (2) ◽  
pp. 367-371 ◽  
Author(s):  
David Reed Harris
Keyword(s):  
Statistical Treatment ◽  
Nominal Scale ◽  
Measurement Operation ◽  
Scale Data ◽  
Statistical Results

An attempt is made to find an answer to Lord's parable of the “football numbers” by demonstrating that he ignored the well known principle that a measurement operation should be consistent over allowable transformations of scale. An example is given to demonstrate that two allowable transformations of nominal scale data may lead to different statistical results.

scholarly journals Wearable bioimpedance for continuous and context-aware clinical monitoring

2020 ◽  
Author(s):  
Walter Karlen ◽  
Abhilash Guru Dutt ◽  
Michaela Verling
Keyword(s):  
Clinical Decision Making ◽  
Clinical Decision ◽  
Accelerometer Data ◽  
Non Invasive ◽  
Standardized Protocol ◽  
Current Consumption ◽  
Wide Range ◽  
Measurement Operation ◽  
Total Body ◽  
Commercial Device

<div>Bioimpedance monitoring provides a non-invasive,</div><div>safe and affordable opportunity to monitor total body water for a wide range of clinical applications. However, the measurement is susceptible to variations in posture and movement. Existing devices do not account for the variations and are therefore unsuitable to perform continuous measurements to depict trend changes. We developed a wearable bioimpedance monitoring system with embedded real-time posture detection using a distributed accelerometer network. We tested the device on 14 healthy volunteers following a standardized protocol of posture change and compared the obtained measurements with an existing commercial device. The impedance measured with both systems had a high correlation (r>0.98) and a Bland-Altman analysis revealed a bias of -4.5 and limits of agreement of -30 and 21. Context-awareness was achieved with processing accelerometer data placed at the upper and lower leg with an accuracy >95%. The calculated current consumption is as low as 10 mA during continuous measurement operation, suggesting that without recharge the system can be used for multiple days. The proposed motion-aware design will enable the measurement of relevant bioimpedance parameters continuously over long periods and aid in informed clinical decision making.</div>

scholarly journals Wearable bioimpedance for continuous and context-aware clinical monitoring

2020 ◽  
Author(s):  
Walter Karlen ◽  
Abhilash Guru Dutt ◽  
Michaela Verling
Keyword(s):  
Clinical Decision Making ◽  
Clinical Decision ◽  
Accelerometer Data ◽  
Non Invasive ◽  
Standardized Protocol ◽  
Current Consumption ◽  
Wide Range ◽  
Measurement Operation ◽  
Total Body ◽  
Commercial Device

<div>Bioimpedance monitoring provides a non-invasive,</div><div>safe and affordable opportunity to monitor total body water for a wide range of clinical applications. However, the measurement is susceptible to variations in posture and movement. Existing devices do not account for the variations and are therefore unsuitable to perform continuous measurements to depict trend changes. We developed a wearable bioimpedance monitoring system with embedded real-time posture detection using a distributed accelerometer network. We tested the device on 14 healthy volunteers following a standardized protocol of posture change and compared the obtained measurements with an existing commercial device. The impedance measured with both systems had a high correlation (r>0.98) and a Bland-Altman analysis revealed a bias of -4.5 and limits of agreement of -30 and 21. Context-awareness was achieved with processing accelerometer data placed at the upper and lower leg with an accuracy >95%. The calculated current consumption is as low as 10 mA during continuous measurement operation, suggesting that without recharge the system can be used for multiple days. The proposed motion-aware design will enable the measurement of relevant bioimpedance parameters continuously over long periods and aid in informed clinical decision making.</div>

scholarly journals Air quality and pollution mapping system, using remote measurements and GPS technology

2013 ◽  
Vol 8 (3) ◽  
pp. 315-323
Keyword(s):  
Air Quality ◽  
Atmospheric Conditions ◽  
Industrial Areas ◽  
Flight Schedules ◽  
Environment Quality ◽  
Mapping System ◽  
Remote Measurements ◽  
Measurement Operation ◽  
Block Based ◽  
Cost Efficient

According to the actual European context, including the development of risk free residential and industrial areas, the main demand lies in instant, accurate and elaborated information regarding environment quality and pollution risks. This paper presents a conceptual architecture for a versatile, flexible, cost efficient, highspeed instrument for monitoring the air quality. In order to cover a large monitoring area, the system is placed in the luggage compartment of a glider. The glider was peculiarly selected, because, in free flight, it covers a wide area – hundreds of kilometers per hour - with a reasonable speed in an economical way, may allow repetitive flight cycles at different altitudes, and, by comparing to a motorized aircraft, it caries the mobile part of the system without affecting the measurement precision by fast acceleration, vibrations, turbulences or polluting exhaust gases. The device, composed by two main physic parts: the mobile and the field components, is remotely controlled, and no kind of intervention from pilot part is requested during the flight, meaning that the measurement operation may be completely accessed from the ground anytime during flight schedules and doesn’t depend on pilot knowledge or action. The mobile component is composed by an acquisition block, based on specialized gas sensors inter-connected within a prototype acquisition board, a positioning system which is represented by a GPS map 196, a laptop and a transmission module. The software platform – in terms of virtual instruments - was developed under Labview programming environment. The communication between GPS and laptop is realized by a RS232 interface, using the NMEA protocol. The information is dynamically processed, allowing both the survey and alert regimes, in order to allow the immediate pertinent decisions, directly, or by use of an expert/esurvey system. The data related to air quality map for the monitored site should be further submitted to a statistical – pollution (contamination) process - control, allowing the evaluation of: peak, average, trend and prediction of pollution, related either to temporal (season, day/night, peak hours etc.) or geographical parameters (altitude, vicinity etc.), or to atmospheric conditions (humidity, wind etc.), or even to societal demands (fuel type, production planning, urban development, or other relevant contextual circumstances). The immediate potential application lies in mapping the air pollution factors dispersion and cause identification, in order to answer to the needs of residential and industrial areas sustainable expansion, a very important problem met mainly by candidate countries to EC.

scholarly journals Basic Spatiotemporal Gait Variables of Young and Older Healthy Volunteers Walking Along a Novel Figure-of-8 Path

2021 ◽  
Vol 12 ◽  
Author(s):  
Arturo Zancan ◽  
Stefania Sozzi ◽  
Marco Schieppati
Keyword(s):  
Healthy Volunteers ◽  
Walking Speed ◽  
Step Length ◽  
Clinical Tool ◽  
Entire Cohort ◽  
Simple Set ◽  
Curved Trajectories ◽  
Measurement Operation ◽  
Walk Ratio ◽  
Path Number

Background: Locomotion along curved trajectories requires fine coordination among body segments. Elderly people may adopt a cautious attitude when steering. A simple, expeditious, patient-friendly walking protocol can be a tool to help clinicians. We evaluated the feasibility of a procedure based upon a newly designed Figure-of-eight (nFo8) path and an easy measurement operation.Methods: Sixty healthy volunteers, aged from 20 to 86 years, walked three times at self-selected speed along a 20 m linear (LIN) and the 20 m nFo8 path. Number of steps, mean speed and walk ratio (step length/cadence) were collected. Data were analysed for the entire cohort and for the groups aged 20–45, 46–65, and &gt;65 years.Results: There was no difference in mean LIN walking speed between the two younger groups but the oldest was slower. During nFo8, all groups were slower (about 16%) than during LIN. Cadence was not different across groups but lower during nFo8 in each group. Step length was about 8% shorter in the two younger groups and 14% shorter in the oldest during nFo8 compared to LIN. Walk ratio was the smallest in the oldest group for both LIN and nFo8.Conclusions: A complex nFo8 walking path, with fast and easy measurement of a simple set of variables, detects significant differences with moderate and large effects in gait variables in people &gt;65 years. This challenging trajectory is more revealing than LIN. Further studies are needed to develop a quick clinical tool for assessment of gait conditions or outcome of rehabilitative treatments.

Measuring Light Based on Sphere Integrating Engineering Design

2014 ◽  
Vol 926-930 ◽  
pp. 1597-1600
Author(s):  
Zhi Ge Yue ◽  
Fu Liu
Keyword(s):  
Engineering Design ◽  
Light Source ◽  
Information Science ◽  
Optical Measurement ◽  
Spectral Band ◽  
The Self ◽  
Integrating Sphere ◽  
Wide Range ◽  
Opening Ratio ◽  
Measurement Operation

In the field of industrial engineering and information science, optical science increasingly wide range of applications, optical measuring more important in engineering applications. In order to facilitate the integrating sphere optical measurement operation, the use of accessories to simplify the process and reduce the error introduced by using a long luminous uniformity and stability characteristics of the LED, the LED as a light source built-in calibration integrating sphere, the design can be a portable the self-calibration sphere, and the model 380nm~ 900nm spectral band calibration test, the linearity of 99.994%, the diameter of the sphere design 500mm, opening diameter 100mm, the opening ratio is about 6% of the total weight of about 18Kg. Will enable the project after the completion of the optical measurement more convenient.

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