有效减少粮食产后损失是世界关注的热点问题,与传统的检测方法相比,基于声信号的储粮害虫检测法凭借其环保、无损、快速、灵敏度高等优点,日渐受到重视。从早期使用单一传感器检测粮虫的振动或声信号,到使用传感器阵列、碰撞声发射及声谱库等,储粮害虫声检测法逐渐成熟。综述30余年国内外储粮害虫声检测法的发展历程及研究成果,对比不同时期多种声检测方法的优点及局限性,并提出当前声检测方法的研究难点及今后需要解决的问题。
The problem on how to reduce post harvest loss of grain effectively has become a hot issue in the world. Compared with some traditional inspection method in detecting pests in stored grain, the method based on acoustic signals has attracted increasing attention because of the advantage of greening, non -destruction, rapidness and high -sensitivity. From using only one sensor to detect the acoustic signals or vibration of pests in stored grain in the early stage, to sensor array, impact -acoustic emission and comparing the insect noise signals to the specific spectra of the reference database recently, the acoustic detection was getting mature. This paper reviewed the development and achievement of acoustic detection of pests in stored grain for more than 30 years, compared the advantages and limitations between some acoustic detection methods in different period and also listed the unsolved problems and the difficulty in next research.