Instrumented Sphere for Compression Analysis

Müller, Ivan; Brito, Renato Machado de; Bender, Renar João

doi:10.1109/imtc.2008.4547039

Cited by 7 publications

(6 citation statements)

References 4 publications

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“…As the compression force values suffered by fruits were not exactly known by our horticultural department, it was arbitrarily established a 500 N full scale for the first prototype. It has been verified through further experiments [5] that the fruits suffered a maximum of 250 N in some cases.…”

Section: Methodsmentioning

confidence: 71%

“…To start the development of the wireless instrumented sphere for sensing forces in three dimensions, two corded prototypes were previously developed [5] and validated in case studies of measuring compression forces undergone by fruits in several different experiments. The developed devices have 55 and 80 mm of diameter each and proved that fruits face damages caused by strong compressions and impacts during the selection, packing and transportation.…”

Section: Methodsmentioning

confidence: 99%

“…The proposed work started with the development of sphere-shaped load cells to quantify the compression forces and impacts suffered by fruits. To do this, corded instrumented spheres were previously developed [5] and their evaluation resulted as a base to the development of a wireless instrumented sphere presented in this paper.…”

Section: Introductionmentioning

confidence: 99%

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Wireless instrumented sphere for three-dimensional force sensing

Müller

Brito

Pereira

et al. 2009

2009 IEEE Sensors Applications Symposium

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Abstract-In this work, a spherical shape portable data acquisition system capable of sensing compression and impact forces along the three Cartesian axes is presented. The developed instrument was validated in several different experiments of fruit packinghouses during the post harvest process in order to check the mechanical damages they suffer. It is a microcontroller embedded system that acquires data from four sensors (accelerometers, load cells, temperature and humidity). A Flash memory is used for data storage and a radio frequency transceiver and a universal serial bus (USB) communication port are provided to allow interface with external computers for dataprocessing and visualization. The case studies indicated strong compression and impact forces suggesting a need for changes in the mechanical and manual selection, packing and transportation of fruits. The developed device was proven to be useful, working as expected and its modular design allows future modifications. The preliminary results obtained with the instrumented sphere point to the need to more concern on damages fruits and vegetables endure along the post harvest handling chain.

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Section: Methodsmentioning

confidence: 71%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Wireless instrumented sphere for three-dimensional force sensing

Müller

Brito

Pereira

et al. 2009

2009 IEEE Sensors Applications Symposium

Self Cite

View full text Add to dashboard Cite

show abstract

“…Compression and traction forces that are totally independent for each axis are measured, but moment forces are not. This load cell was used to quantify compression and impact forces suffered by fruits during the post-harvest and transportation process [1]. The first prototype was built with a diameter of 80 mm, which is the approximate diameter of an ordinary apple.…”

Section: A New Sphere-shape Load Cell Designmentioning

confidence: 99%

“…Several different experiments were performed using the 3-ring load cell during the post-harvest processing of apples and oranges [1]. Maximum compressions of up to 18 kp were found and repeated in a horticultural laboratory to investigate the real damage they produced on the fruits.…”

Section: Application Of the 3-ring Spherical Load Cellmentioning

confidence: 99%