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- Title
Development of the Second Generation Berry Impact Recording Device (BIRD II).
- Authors
Rui Xu; Changying Li
- Abstract
To quantitatively measure the impacts during blueberry harvesting and post-harvest handling, this study designed the second generation Berry Impact Recording Device (BIRD II) sensor with a size of 21 mm in diameter and a weight of 3.9 g, which reduced the size by 17% and the weight by 50% compared to the previous prototype. The sensor was able to measure accelerations up to 346 g at a maximum frequency of 2 KHz. Universal Serial Bus (USB) was used to directly connect the sensor with the computer, removing the interface box used previously. LabVIEW-based PC software was designed to configure the sensor, download and process the data. The sensor was calibrated using a centrifuge. The accuracy of the sensor was between. 1.76 g to 2.17 g, and the precision was between 0.21 g to 0.81 g. Dynamic drop tests showed that BIRD II had smaller variance in measurements than BIRD I. In terms of size and weight, BIRD II is more similar to an average blueberry fruit than BIRD I, which leads to more accurate measurements of the impacts for blueberries.
- Subjects
BLUEBERRIES; FRUIT handling; PROTOTYPES; BIOSENSORS; AGRICULTURAL mechanics
- Publication
Sensors (14248220), 2015, Vol 15, Issue 2, p3688
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s150203688