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한국생물환경조절학회 / v.2, no.1, 1993년, pp.27-36 
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작물의 생장정보 계측 및 생육제어에 관한 연구 I. 탄산가스 제어 알고리즘 개발
( On-line Measurement and Control of Plant Growth I. Development of $ extrm{CO}_2$ Control Algorithm ) |
| 진제용;류관희;홍순호; 서울대학교 농업생명과학대학 농공학과;서울대학교 농업생명과학대학 농공학과;마포산업전자주식회사;
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| 초 록 |
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| Carbon dioxide enrichment for greenhouse crops has generally been a standard commercial practice for many years. Vegetable crops such as tomato, cucumber, and lettuce respond positively to the $CO_2$ enrichment. But improper $CO_2$ enrichment leads to physiological damage and economical loss. This study was carried out to develop a $CO_2$ concentration control algorithm considering growth stage and efficiency. The measurand was $CO_2$ consumption rate and top fresh weight that represents growth stage. The weight of top fresh lettuce as a whole in the tray was measured through a non-destructive method. The demand in $CO_2$ concentration according to growth stage was investigated. The results are summarized as follows. 1. The $CO_2$ consumption rate could be measured within the error of $pm$ 15.4mg$CO_2$/hr in the range of $CO_2$ concentration of 500-1500ppm. 2. The weight of top fresh lettuce could be measured within the error $pm$ 4.3g in the range of 0-1400g. 3. The $CO_2$ control model developed could determine an economical $CO_2$ supply rate considering $CO_2$ consumption rate and leakage rate. 4. The $CO_2$ control algorithm based on the control model was composed of feedforward control for maintaining a stable $CO_2$ concentration level, and feedback control with $CO_2$ consumption rate and top fresh weight for adapting to the change in $CO_2$ demand by growth stage. 5. For the performance test with the developed control algorithm on lettuce the decrease in $CO_2$ supply rate was obtained without a significant decrease in top fresh weight. |
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| 키워드 |
| 탄산가스 농도제어;탄산가스 소비율;탄산가스 공급률;생체중;$ extrm{CO}_2$ concentration control;$ extrm{CO}_2$ consumption rate;$ extrm{CO}_2$ supply rate;top fresh weight.; |
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생물환경조절학회지 / v.2, no.1, 1993년, pp.27-36
한국생물환경조절학회
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199311922403971)
언어 : 한국어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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