DEVELOPMENT OF A PORTABLE AIR FLOW DIGITAL METER FOR GRAIN DRYING

Authors

  • A. B. Istifanus Department of Agricultural and Bioresources Engineering, University of Nigeria, Nsukka, Nigeria. Author
  • C. C. Mbajiorgu Department of Agricultural and Bioresources Engineering, University of Nigeria, Nsukka, Nigeria. Author

Keywords:

Airflow, digital meter, grain, drying

Abstract

Technological progress allows more and more instruments to be developed for different purposes based
on the prevailing need. The development of a portable air flow digital meter relied on a computer based
design. Assembly language was used in writing a set of instructions that were programmed into the micro
controller component of the system. This produced an interface which enabled interaction using a
monitor. The codes were translated from analogue to digital using a Digital Converter (ADC) and then
interpreted in a Liquid Crystal Display (LCD) in m/s. The speed of the fan or the position of the meshlike
tray regulated how moist the grain is or how fast the drying exercise is to take place. When the speed
of the fan was increased, more air was produced and this led to faster drying of the grains as higher values
of flow were correspondingly displayed. The meter measures values accurately to over 1x102m/s.

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Published

2025-05-10