PERANCANGAN SISTEM KENDALI KONVEYOR MENGGUNAKAN MIKROKONTROLER AT89C51 UNTUK SORTASI JERUK MANIS (Citrus sinesis L.) BERBASIS CITRA
ABSTRACT: Considering the
plantation area and annual production, orange is the third mostimportant
commodity after banana and mango. Orange from harvesting has varietymaturity
and dimension so that needs sorting. Manual sorting cannot yield election
ofquality maximally. The use of
automated mechanical sorting for agricultural produces is expected notonly to
eliminate boring and time consuming jobs, but also to reduce cost by minimizing
oflabors. This particular research was conducted to develop and to test a
conveyor controllersystem using a PC equipped with the AT89C51 microcontroller,
as an automatedmechanical sorting system for mandarin oranges. The fruit was
put on the runningconveyor at which the image was recorded and then input to
the developed system. Thefruits classification was based on their physical
appearances. The developed system
consisted of two main parts: the mechanical subsystem, i.e. aconveyor which was
equipped with the classification mechanism and the electronicssubsystems, i.e.
the AT 89C51 microcontroller that serially connected with a PC,functioned as
the main controlling unit. Test results
showed that the position control system worked according to theprevious
expectation. The average conveyor slip was 6.87 % resulted from the
V-belttransmission. The precision of the halted fruit under the imaging unit
was greatlyinfluenced by the positioning of the light sensors, rotation of
motor, and the position of theimaging camera. The average capacity of the
system based on the imaging analysis timeand the motor rotation were 213
fruits/hour (43.07%) and 442 fruits/hour (89.41%),respectively. They were lower
than the ideal capacity of 495
fruits/hour.
Key words: Mandarin Oranges,
Sorting, AT89C51 Microcontroller
Penulis: Bambang Dwi Argo,
Nova Yogantoro
Kode Jurnal: jppertaniandd070008
