GPS as a structural deformation sensor

Teague, Edward; How, Jonathan P.; Lawson, London; Parkinson, Bradford W.

doi:10.2514/6.1995-3258

Cited by 8 publications

(4 citation statements)

References 2 publications

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“…Aerospace atmospheric researchers have accomplished most of the initial work. Studies related to the application of GPS for static or dynamic measurements of displacements of structural systems include but not limited to those by Hyzak et al (1997), Teague et al (1995), Guo and Ge (1997), Kondo and Cannon (1995), Lovse et al (1995), Hudnut and Behr (1998), King (1998), andStein et al (1997). Very recently, since our original paper describing in detail the concept of using GPS for dynamic monitoring of long-period structures (Ç elebi et al 1999), temporary deployments to dynamically monitor excessive deflections due to wind, in the decimeter range, of the 1410-m-long Humber Bridge on the east coast of England was successfully carried out (Roberts, Dodson, and Ashkenazi 1999).…”

Section: Previous Workmentioning

confidence: 99%

GPS in Pioneering Dynamic Monitoring of Long-Period Structures

2002

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rates allows scientifically justified dynamic measurements of relative displacements of long-period structures. The displacement response of a simulated tall building in real time and permanent deployment of GPS units at the roof of a building are described. To the authors ’ best knowledge, this is the first permanent deployment of GPS units (in the world) for continuous dynamic monitoring of a tall building. Data recorded from the building during a windy day is analyzed to determine the structural characteristics. When recorded during extreme motions caused by earthquakes and strong winds, such measurements can be used to compute average drift ratios and changes in dynamic characteristics, and therefore can be used by engineers and building owners or managers to assess the structural integrity and performance by establishing pre-established thresholds. Such information can be used to secure public safety and/or take steps to improve the performance of the building. [DOI: 10.1193/1.1461375

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Section: Previous Workmentioning

confidence: 99%

GPS in Pioneering Dynamic Monitoring of Long-Period Structures

2002

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“…GPS sensors are electronic devices used to detect the location of a system with the use of satellite-based navigation system (Scientific, 2020). Conventional GPS sensors obtain the position of an object by measuring the distances between its antenna and four or more satellites through the detection of the phase of the digital data sequence each satellite transmits (Teague et al, 2013). Neo-6m GPS sensor was one of the sensors used for the sensors analytics system in this study.…”

Section: Vision Sensormentioning

confidence: 99%

“…Injection moulding involves the transformation of plastic pellets into moulded plastic objects (Teague et al, 2013). These moulded plastic objects take the sizes and shapes of the cavities of the plastic injection moulds.…”

Section: Introductionmentioning

confidence: 99%

Design and construction of a sensor analytic system for the monitoring of the parameters of a plastic injection mould

Babalola

2021

FEBE

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PurposeValues of parameters such as temperature, humidity, number of plastic products and the location of plastic injection moulds are required to determine the efficiency of plastic injection moulds with a view to improving the quality of the outputs. This article determined the appropriate sensors for the measurement of these essential parameters in the most suitable form of representation of the data to aid a proficient analysis of the data.Design/methodology/approachThe outputs of these sensors were obtained by connecting the sensors to the general-purpose input/output (GPIO) pins of a Raspberry Pi and writing a Python programme for the connected GPIO pins. The values of the outputs of these sensors were represented in a graphical form. The connection of the Raspberry Pi and the sensors were done with a full-sized breadboard and jumper wires. A computer-aided design (CAD) of the connections was produced using Fritzing software.FindingsThe appropriate sensors determined are MLX90614 infrared thermometer sensor, DHT11 humidity sensor, pixy2 vision sensor and Neo-6m GPS sensor. This study proposed that the sensors analytic system be applied on an industrial plastic injection mould to measure and display the various parameters of the injection moulds for the purpose of understanding and improving the performance of the injection mouldOriginality/valueAn electronic system that provides the continuous values of essential parameters of a plastic injection mould in operation.

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“…The use of Global Navigation Satellite Systems (GNSS) for deflection monitoring of structures (Rizos et al, 2010, Çelebi, 1998, Teague et al, 1995, Lovse et al, 1995, and in particular long span bridges has been an area of ongoing research for over 20 years. The work initially focussed on using carrier phase Global Positioning System (GPS) observations, gathered from a reference GPS receiver located adjacent to the bridge, as well as one or more GPS receivers attached to the bridge.…”

Section: Introductionmentioning

confidence: 99%

The use of PSD analysis on BeiDou and GPS 10 Hz dynamic data for change detection

Roberts

2017

Advances in Space Research

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This paper examines the use of GPS and BeiDou data to measure the movements of two oscillating platforms in a series of field experiments. Data were gathered from a variety of GNSS receivers at a rate of 10Hz, and processed in an on the fly manner, resulting in 3D coordinates at a 10Hz rate with the corresponding precise time. These data were then analysed using a Power Spectral Density (PSD) function to derive the frequency of the movements. The positional data were also compared by matching a 500 epoch section of the data from the start with 190 successive 500 epoch long sections in order to demonstrate whether the movement measured was constant throughout, or whether there were any changes. The results show that the correlation of the positional data over a 30,737 epoch period deviates between 99.8% to 76.7% correlation with RMS values of 89.2%, 87.9% and 77.5% in the Eastings, Northings and Vertical directions respectively when using GPS. The RMS of the Eastings and Northings remain the same when BeiDou is introduced, but the height component improves slightly to 78.9%. The frequency analysis of the same 500 epoch long sections is constantly measured at 0.1172Hz in all three positional components, illustrating less deviation when analysing the frequencies. The main conclusion is that analysis of the resulting PSD output from GNSS data gathered on an oscillating platform is more constant and precise than analysing the results of the coordinates alone. This suggests that such analysis would be well suited for a Structural Health Monitoring system. The introduction of BeiDou also improves the results slightly, even in its current incomplete constellation. The novelty of this work is the analysis of the movements in such a controlled environment, and the correlation approach of the resulting positional output as well as the frequency derivation from the positions using both GPS and BeiDou. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 China. AbstractThis paper examines the use of GPS and BeiDou data to measure the movements of two oscillating platforms in a series of field experiments. Data were gathered from a variety of GNSS receivers at a rate of 10Hz, and processed in an on the fly manner, resulting in 3D coordinates at a 10Hz rate with the corresponding precise time. These data were then analysed using a Power Spectral Density (PSD) function to derive the frequency of the movements. The positional data were also compared by matching a 500 epoch section of the data from the start with 190 successive 500 epoch long sections in order to demonstrate whether the movement measured was constant throughout, or whether there were any changes. The results show that the correlation of the positional data over a 30,737 epoch period deviates between 99.8% to 76.7% correlation with RMS values of 89.2%, 87.9% and 77.5...

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GPS as a structural deformation sensor

Cited by 8 publications

References 2 publications

GPS in Pioneering Dynamic Monitoring of Long-Period Structures

GPS in Pioneering Dynamic Monitoring of Long-Period Structures

Design and construction of a sensor analytic system for the monitoring of the parameters of a plastic injection mould

The use of PSD analysis on BeiDou and GPS 10 Hz dynamic data for change detection

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