基于害虫声频域特征的储粮害虫种类鉴别研究

The distinction of insect kind on the characteristic of stored grain insect sound frequency

分别对赤拟谷盗(Tribolium castaneumHerbst)成虫、米象(Sitophilus oryzaeLinnaeus)成虫以及两者复合后在粮罐内小麦中的爬行声进行了采集,进行了爬行声信号的再现和功率谱估计。利用爬行声信号的频域特征进行了害虫种类的鉴别研究。研究表明,害虫声频域特征比时域信号对鉴别害虫种类更具有可靠性。图4,参7。

The sound data of creeping in wheat in the grain barrel for Tribolium castaneum Herbst adults, Sitophilus oryzae Linnaeus adults and them together are sampled.The acoustical signal reproducing and power spectrum estimating, also distinction of insect kind on power spectrum are made.The results show that the insect sound power spectrum is more reliable than time signal for the distinction of stored grain insect kind.