FIELD: beekeeping.
SUBSTANCE: invention relates to beekeeping and can be used in practical work on individual and collective apiaries. Apparatus for acoustic monitoring of bee family condition comprises external demountable condenser microphone with power supply, power supply, band-pass low-pass filter, amplifier with automatic gain control. Output of the microphone is connected to the first input of the band-pass low-pass filter, the output of which is connected to the input of the amplifier with automatic gain control. Outputs of power supply are connected to power supply busbars of external detachable microphone with power supply, power buses of amplifier with band-pass filter 200–400 Hz, output of which is connected to input of automatic gain control system (AGCS). Device incorporates a microprocessor with a built-in analogue-to-digital converter (ADC), a discrete Fourier transform device, a spectrum comparator with samples in memory and a LED indicator. Output of AGCS is connected to input of microprocessor and to input of built-in ADC. First output of the microprocessor is connected to the second input of the AGCS, the second output of the microprocessor is connected to the input of the discrete Fourier transform device, the output of the discrete Fourier transform device is connected to the input of the spectral comparator with memory samples, the output of which is connected to the input of the LED indication. Outputs of power supply are connected to power supply buses of microprocessor, power buses of discrete Fourier transform device, power supply buses of device of spectrum comparator with memory samples, with busbars of power supply of light-emitting diode indicator.
EFFECT: technical result consists in simplification of circuit design, reduction of technological stages of diagnostics, improvement of accuracy of diagnostics, simplicity of operation with instrument by unprepared beekeepers.
1 cl, 3 dwg
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