Pond culture sound control feeding method and device based on same
A pond and background noise technology, applied in fish farming, application, animal husbandry, etc., can solve the problems of lagging feeding method control, large intensity fluctuations, difficult feed feeding, etc., to improve feed utilization, accurate and reliable control , the effect of high commercial value
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[0035] The present invention will be further described below in conjunction with specific embodiments.
[0036] Such as figure 1 As shown, the acoustic monitoring platform is composed of hydrophone, filter amplifier, A / D conversion acquisition card, and computer. The reference hydrophone used by the platform is the TC4034 made by Danish Reson Company. The available bandwidth is 1Hz-470kHz, and the free field voltage sensitivity level below 40kHz is -217dB (reference value is 1V / uPa), in order to prevent fish from hitting the hydrophone when swimming. , An isolation network is set up around the hydrophone; the signal received by the hydrophone is very weak, and there are various noises at the same time. Before the signal is sampled, KrohnHite3944 is used for filtering and amplification. KrohnHite3944 has 4 independent channels, which can be connected in series to form 2 Band-pass filter, and provides 40dB amplification gain per channel; the data acquisition equipment is NI USB-62...
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