Vegetable freshness keeping device having a sensor

A vegetable freshness sensor production method and a freshness keeping device using the sensor are disclosed. The sensor senses gases generated by vegetables, thus to not only sense freshness of the vegetables but also sense decayed state of the vegetables. The vegetable freshness keeping device app...

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Bibliographische Detailangaben
Hauptverfasser:	KIM, SUNG T, PARK, HYEON S, LEE, KYU C, KWON, CHUL H, YUN, DONG H, HONG, HYUNG-KI, SHIN, HYUN W
Format:	Patent
Sprache:	eng
Schlagworte:	AGRICULTURE ANIMAL HUSBANDRY CHEMICAL RIPENING OF FRUIT OR VEGETABLES DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE FISHING FOODS OR FOODSTUFFS FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BYSUBCLASSES A23B - A23J FORESTRY HAY OR STRAW PRESSES HUMAN NECESSITIES HUNTING INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT,VEGETABLES, EDIBLE SEEDS PROCESSING OF HARVESTED PRODUCE TESTING THE PRESERVED, RIPENED, OR CANNED PRODUCTS THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OFNUTRITIVE QUALITIES, PHYSICAL TREATMENT THEIR TREATMENT, NOT COVERED BY OTHER CLASSES TRAPPING
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Beschreibung
Zusammenfassung:	A vegetable freshness sensor production method and a freshness keeping device using the sensor are disclosed. The sensor senses gases generated by vegetables, thus to not only sense freshness of the vegetables but also sense decayed state of the vegetables. The vegetable freshness keeping device appropriately controls temperature, pressure, humidity, O2/CO2 and quantity of anion in the vegetable store room in accordance with sensing result of the sensor, thus to keep freshness of the vegetables for a long time. In order to produce the gas sensor, a mixture of a metal catalyst and a sensing material is calcinated and mixed with an organic vehicle, thus to form a paste. The paste is coated on an electrode surface of an alumina substrate, thus to form a sensing layer on the substrate. The substrate, after being sintered, is subjected to a wire bonding and to a packaging, thus to form the gas sensor.