alexa Non-Contact Ultrasonic Based Stiffness Evaluation System for Tomatoes during Shelf-Life Storage
ISSN: 2155-9600

Journal of Nutrition & Food Sciences
Open Access

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Research Article

Non-Contact Ultrasonic Based Stiffness Evaluation System for Tomatoes during Shelf-Life Storage

Satyam Srivastava1*, Saikrishna Vaddadi2 and Shashikant Sadistap3

1AES, Academy of Scientific & Innovative Research (ACSIR), CSIR-CEERI, India

2Scientist, AEG, Council of Scientific and Indrustrial Research (CSIR- CEERI), India

3Senior Principle Scientist, AEG, Council of Scientific and Indrustrial Research (CSIR- CEERI), India

*Corresponding Author:
Satyam Srivastava
AES, Academy of Scientific & Innovative Research (ACSIR)
CSIR-CEERI, India
Tel: 91-1596-243489
E-mail: [email protected]

Received Date: January 28, 2014; Accepted Date: April 26, 2014; Published Date: April 30, 2014

Citation: Satyam S, Saikrishna V, Shashikant S (2014) Non-Contact Ultrasonic Based Stiffness Evaluation System for Tomatoes during Shelf-Life Storage. J Nutr Food Sci 4: 273. doi: 10.4172/2155-9600.1000273

Copyright: © 2014 Satyam S, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

This paper addresses a use of the non-contact ultrasonic based stiffness or firmness measurement technique for tomatoes quality judgment. Here, both the change in received acoustic signal attenuation and its propagation delay due to variation in stiffness of tomatoes are recorded over a time period from fresh to full ripen cycle of tomato. The experimental setup consist of ultrasonic transducer (400EP14D) have center frequency 40 KHz with 1350 typical beam angle, interface circuit to connect with ARM9 processor using the Linux OS with qtopia based GUI for data acquisition and further analysis purpose. The data obtained by the developed system is also transferred to PC using Zigbee wireless network for further processing and training using various pattern recognitions techniques under the developed system software package. A second order nonlinear relationship between the attenuation, propagation delay was observed until the end of shelf life of tomatoes under test. The ARM9 based developed system helps both in linearization and auto calibration of the measured data well as has advantage of multiple sensor connectivity for different analysis like temperature and humidity compensation. The results obtained are also validated using standard Alpha-Mos system consists of 12 gas sensors using odor sensing technique. Thus the developed noncontact ultrasonic based system is cost effective, low power and compact system to differentiate between quality (mature and immature) of tomatoes as well as prediction of different factors like chilling injury, TSWV (tomato spotted wilt virus), sunscald and it can be further applied to other types of fruits where stiffness change is major factor for quality of the fruit.

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