木材钻蛀害虫声测传声器的研究  

Study on microphones for collecting sound of wood borers

作　　者：娄定风[1,2] 周红生[3] 刘新娇[1,2] 许小芳[3] 李嘉[4] 李秋枫[1,2] 焦懿[1,2] 徐浪[1,2] 向才玉[1,2] 陈冬美[1,2] 余道坚[1,2] 陈志粦[1,2] 叶奕优[1,2] 

机构地区：[1]深圳出入境检验检疫局,广东深圳518045 [2]深圳市检验检疫科学研究院外来有害生物检验重点实验室 [3]中国科学院声学研究所东海研究站 [4]深圳市计量质量检测研究院

出　　处：《植物检疫》2013年第6期46-50,共5页Plant Quarantine

基　　金：国家质量监督检验检疫总局项目(2008IK266);深圳市科技研发资金基础研究计划资助项目(JC200903180672A)

摘　　要：为了探索木材钻蛀害虫声测方法,选用3种型号的传声器对6种蛀虫进行测试,观察传声器灵敏度、频响范围及放置距离对声采集效果的影响。结果表明:灵敏度越高,声采集效果越好;双钩异翅长蠹、黑双棘长蠹、棕异翅长蠹、刺角楝天牛、宽斑脊虎天牛和鳞毛粉蠹等6种木材钻蛀害虫取食声频谱范围主要分布在10kHz以下;蛀食声脉冲振幅与声源距离的关系为下降的对数曲线。因此,建议采用50 mV/Pa以上灵敏度、频率响应范围覆盖10kHz以下频率的传声器,在安静的环境中,贴近木材放置,以获得好的虫声采集效果。In order to develop techniques of wood borer acoustic detection, 3 types of microphones were tested for effect of sensitivity, frequency response and detecting distance on collection of feeding sound of six species. Result shows the higher sensitivity is, the better effect acoustic collection will have. Spectrum range of feeding sound from Heterobostrychus aequalis,Sinoxylon conigerum,Heterobostrychus brunneus, Cordylomera spinicornis, Xylotrechus colonus and Minthea rugicollis are below 10kHz. A logarithmic curve between sound pulse amplitude of borer and distance from sound source is proved. Using microphones with sensitivity above 50 mV/Pa and frequency response covering frequency below 10kHz, and placing them near wood in quiet surroundings are suggested for good collection of wood borer sound.

关 键 词：木材钻蛀害虫 传声器 灵敏度 频响范围 

分 类 号：S763[农业科学—森林保护学]