The Optical Flying Insect Detection and Identification System (OFIDIS) is a new tool for integrated pest management. This system automatically counts and identifies individual flying insects. It can be used for automated monitoring of a wide variety of pests and beneficial insects.
OFIDIS has three components: a light source, a photosensor, and a data logger. The sun may be used as a light source for day flying insects and an infrared LED array may be used for night flying insects or for laboratory studies. The photosensor produces a transient waveform whenever it detects light reflected off the wings and body of a flying insect. This waveform is digitized, stored, and analyzed by the data logger, which is a personal computer equipped with a sound card and data acquisition software. Recent research has shown that optically-sensed insect wingbeat waveforms contain harmonic patterns that are species-specific. The data acquisition software extracts the harmonic pattern from each signal. Automated classification is performed by matching this pattern to a library of known harmonic patterns using nearest neighbour analysis or by using an artificial neural network.
Potential applications for OFIDIS are:
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