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Monitoring and acoustic analysis.of the ultrasonic signals produced by Heliothis armigem (Hubner) and Mythimna separata (Walker) moths (Lepidoptera: Noctuidae)

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Progress in Natural Science:Materials International 1996年第1期 111-116页

作者：薛耀泉张志涛殷柏涛吴祥兴陈伟丁红建戴晓枫傅强 Beijing 100094 China China National Rice Research Institute China. Chinese Academy of Agricultural Sciences Hangzhou 310006 China Hangzhou 311400 Hangzhou Applied Acoustics Research Institute Institute of Plant Protection

It was found during the early study of insect morphology that some species of moths have structures similar to audio-organs on each of the lateral sides at the junction of thorax and abdomen. Later moths were observed to escape from the predatoriness of bats by detecting their ultrasonic signals. Payne and Agee found ultrasonic signals of different frequencies to disturb the Trichoplasia ni (Hǖbner) and Heliothis armigera (Hǖbner), and then concluded that ultrasonic pulses of 20 to 40 kHz in frequency and 70 to 90db in

关键词： Heliothis armigera (Hubner) Mythimna separata (Walker) ultrasonic signals signal monitoring signal analysis.

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HAND-HELD STATE MONITORING AND FAULT DIAGNOSIS SYSTEM FOR OIL FIELD POURING AND PICK EQUIPMENT

HAND-HELD STATE MONITORING AND FAULT DIAGNOSIS SYSTEM FOR OI...

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International Technology and Innovation Conference 2006

作者： LI Peiyu, TAN Dapeng, LIU Duanyang College of Mechanical and Energy Engineering, Zhejiang University, Hangzhou 310027, China College of Information Engineering, Zhejiang University of Technology, Hangzhou 310024, China

＜正＞There are a lot of problems in pouring and pick equipments （PPE） which are widely applied in oil field, such as many different kinds of faults, dispersal of equipments, strict requirement for continuous working etc. But traditional fault diagnosis technology （FDT） based on PC doesn’t have adequate flexibility, so it can not satisfy the requirements as mentioned before. To solve these problems, a new kind of hand-held state monitoring and fault diagnosis system （SM-FDS） based on embedded technology was put forward. After detailed analysis.of working situation and operating features of PPE, the realization way which is mainly based on the index of vibration is confirmed;Using multi-channel data collecting technology, hand-held circuit check is realized in real-time data collecting process. signal analysis.component library and graphical user interfaces （GUI） component library which can reconstruct and occupy small space are established to make characteristic extraction of signal, on-line analysis.and diagnosis by multi-kind signal analysis.method. According to specific requirements of hand-held instruments, monitoring system which has upper-lower position computer with dual-CPU computer architecture and low power consumption designation is realized. Industry experiments indicated that this system monitors accurately, works stably, and has a bright application future.

关键词： Pouring and pick equipment hand-held embedded system fault diagnosis signal analysis.

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HAND-HELD STATE MONITORING AND FAULT DIAGNOSIS SYSTEM FOR OIL FIELD POURING AND PICK EQUIPMENT

HAND-HELD STATE MONITORING AND FAULT DIAGNOSIS SYSTEM FOR OI...

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2006年中国机械工程学会年会暨中国工程院机械与运载工程学部首届年会

作者： LI Peiyu*, TAN Dapeng*, LIU Duanyang *College of Mechanical and Energy Engineering, Zhejiang University, Hangzhou 310027, China College of Information Engineering, Zhejiang University of Technology, Hangzhou 310024, China

There are a lot of problems in pouring and pick equipments (PPE) which are widely applied in oil field, such as many different kinds of faults, dispersal of equipments, strict requirement for continuo

关键词： Pouring and pick equipment hand-held embedded system fault diagnosis signal analysis.

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