A control system for multi-stage ginseng drying, based on real-time
identification of moisture and quality changes, was developed.
Computer-vision system provided real-time imaging of area shrinkage
and colour changes. Shrinkage was identified by extracting of the
green plane from the RGB color space, while colour changes- from
the HSI color space. Shrinkage-moisture and colour-quality
relationships were experimentally developed over the entire range
of drying conditions in isothermal and non-isothermal drying.
Relational models were used as components of control system. Data
from computer vision system were used to generate relevant signals
to low-level controller for temperature adjustment according to
actual moisture content and quality. It enabled to start drying
with the predictive model and then re-evaluate the drying
conditions on the basis of feedback information from
computer-vision system. Testing of a pilot batch dryer with an
embedded virtual controller showed robustness and reliability of
control, which provided drying to target moisture content 0.1 g/g
(db) with high-standard quality.
General
| Imprint: |
VDM Verlag Dr. Mueller E.K.
|
| Country of origin: |
Germany |
| Release date: |
May 2008 |
| First published: |
May 2008 |
| Authors: |
Alex Martynenko
|
| Dimensions: |
229 x 152 x 11mm (L x W x T) |
| Format: |
Paperback - Trade
|
| Pages: |
200 |
| ISBN-13: |
978-3-639-02450-0 |
| Categories: |
Books
Promotions
|
| LSN: |
3-639-02450-8 |
| Barcode: |
9783639024500 |
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