期刊名称：Lecture Notes in Engineering and Computer Science
印刷版ISSN：2078-0958
电子版ISSN：2078-0966
出版年度：2019
卷号：2241
页码：390-395
出版社：Newswood and International Association of Engineers
摘要：Mechanical damages have been caused by the
process of pressing mango fruits to check for it’s ripeness.
In order to reduce this damage, two varieties of mangoes
namely Totapuri and Tommy Atkins were tested by an advanced
universal testing machine (UTM). Each of these varieties had
5 samples of different ripeness levels to test for their elastic
modulus. The mangoes were loaded radially and the results
of the elastic modulus obtained, falls between 0.5MP a and
3.5MP a. This paper aims at presenting a detailed design
procedure for developing a tactile sensor that can differentiate
between different ripeness levels in mango fruit. The tactile
sensor is based on two springs configuration, each of these
springs having different stiffness. These design procedures
were carried to achieve high sensitivity and linearity in the
sensor output. The measuring range of the sensor was selected
based on the modulus of elasticity of mango fruit chosen from
the compression tests carried out on the mango fruit. The
performance of the tactile sensor was studied by developing
a finite element model using the ANSYS Mechanical ANSYS
Parametric Design Language (APDL) software. The simulation
results gotten from the performance of the tactile sensor shows
that the sensor can differentiate between different mango fruits
based on their elastic modulus within the specified range of the
sensor.
