Application of bio-acoustics for realization of environment symbiosis housing

2014 Fiscal Year Final Research Report

• Project/Area Number: 24651081
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Environmental technology/Environmental materials
• Research Institution: Oita University
• Principal Investigator: OTSURU Toru 大分大学, 工学部, 教授 (30152193)
• Co-Investigator(Kenkyū-buntansha): TOMIKU Reiji 大分大学, 工学部, 准教授 (20420648) ; OKAMOTO Noriko 有明高等専門学校, 建築学科, 准教授 (00452912)
• Co-Investigator(Renkei-kenkyūsha): INOUE Masafumi 大分大学, 工学部, 教授 (60128337) ; TANAKA Kei 大分大学, 工学部, 助教 (00325698)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 環境共生住宅 / シロアリ / デジタル信号処理 / 振動・音響信号 / バイオ・アコースティクス

Outline of Final Research Achievements

In this study, for realization in environment symbiosis housing, relationships between acoustical signal or vibration on chewed surface of a wooden block and feeding activity on the termites “Coptotermes formosanus” is investigated as follows. First, several groups of workers and soldiers of the termites were placed between a pair of wooden blocks with and without signal supplement during two weeks, and the comparison of the amounts of food ingested between with and without signal supplement was conducted. Here, six types of signals with which the amplitude and frequency characteristic of vibration acceleration are different are supplied to the wooden blocks. Next, the relationships between the total amount of food ingested of both wooden blocks and the amplitude of vibration acceleration of supplemental signals were also observed. There was a negative correlation between the vibration acceleration level on the vibration surface and the amounts of food ingested of both wooden blocks.

Free Research Field

建築環境・設備