| 摘要 |
FIELD: instrument making.SUBSTANCE: device for determining sound source direction includes two photoelectric shadow instruments, each of which includes in-series installed laser, collimating lens, two pieces of protective glass, focusing lens, beam splitter in the first photoelectric shadow instrument, two knives in the form of semi-planes with mutually perpendicular edges in the first photoelectric shadow instrument, the third knife in the form of a semi-plane in the second shadow instrument, matching lenses installed after each of the above knives, two photoreceivers and two amplifiers in the first shadow instrument and one photoreceiver with an amplifier in the second shadow instrument. A plane parallel plate is installed in each shadow instrument after the laser at an angle of 45° to optic axis. Device also includes two deducting stages, to which amplifiers are connected; outputs of all deducting stages are connected to inputs of their analogue-to-digital converters, the outputs of which are connected to inputs of the devices determining mean square values of signals, the outputs of which are connected to the input of programmed logic integrated circuit; outputs of analogue-to-digital converters are connected to inputs of signal multipliers.EFFECT: improving sensitivity of the device and minimising the amount of errors in certain sound source direction.4 dwg |
