Humidity Sensor Accuracy Improvement Based on Two Nested Kalman Filters for Commercial Cultivation of Tropical Orchids. - Prachumpong Dangsakul; Nutchanon Siripool; Kraithep Sirisanwannakul; Rachaporn Keinprasit; Khongpan Rungprateeptavorn; Suthum Keerativittayanun; Jessada Karnjana (ICONIP (5), 2020)