Paper Title:
Internal Quality Estimation of Watermelon by Multiple Acoustic Signal Sensing
  Abstract

Watermelons are usually sorted by theirs weight and internal quality. Some automated watermelon weight sorters have been developed and operated in watermelon production areas. However, inspection of internal quality of watermelon is still performed by manually. Principal method of identifying internal defect of watermelon is analyzing the percussion sound of watermelon by human experts. Development of non-destructive evaluation technique for internal quality of watermelon is required to reduce human decision errors. The objective of this study was to develop a non-destructive sorting system which can detect internal defect of watermelons. The internal defect evaluation system has a constant-force hitting hammer to generate the acoustic sound, a multi-point sound signal acquiring system, a noise removal circuit, and a signal processing and quality evaluation program. An internal quality prediction model by PLSR (Partial Least Square Regression) was developed by analyzing the percussion sound of watermelons. Using the developed model, the prediction result shows that the overall prediction accuracy was 90.1%, and severely defected watermelons were identified perfectly.

  Info
Periodical
Key Engineering Materials (Volumes 321-323)
Edited by
Seung-Seok Lee, Joon Hyun Lee, Ik Keun Park, Sung-Jin Song, Man Yong Choi
Pages
1209-1212
DOI
10.4028/www.scientific.net/KEM.321-323.1209
Citation
K. J. Lee, W. Y. Choi, G. Y. Kim, S. W. Kang, S. H. Noh, "Internal Quality Estimation of Watermelon by Multiple Acoustic Signal Sensing", Key Engineering Materials, Vols. 321-323, pp. 1209-1212, 2006
Online since
October 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Jae Young Nam, S.H. Choi, Jae Boong Choi, Young Jin Kim
Abstract:Even though an excavation is not under the direct control of the utility operators, it is the main cause of third-party damage on the...
123
Authors: Chang Chen, Ping Song, Da Ming Pei, Ke Jie Li
Abstract:The emergency of wireless sensor network provides a distributed, low cost and flexible solution for acoustic localization system. Location...
1651
Authors: Qi Wang, Yin Sheng Chen, Kai Song
Abstract:The appearance and growth of the microcracks in the structure is an important factor that influences the structure safety and its service...
432
Authors: Zhong Zhu Liu, Chun Guang Xu, Xin Yu Zhao, Xiang Hui Guo
Chapter 3: Industrial Robotics and Automation
Abstract:Scanning acoustic microscopy (SAM) is a powerful non-destructive testing tool used in electronic, material and medical testing area....
1128
Authors: Yang Yu, Yang Yu
Chapter 2: Materials Science and Engineering
Abstract:This paper studies the cylindrical acoustic emission signal generation, propagation and attenuation. Acoustic emission signal is a form of...
727