| 摘要 |
FIELD: medical engineering. ^ SUBSTANCE: device has electrodes, preamplifier, microprocessor, lower and upper level memory units, the first comparison unit, the first threshold unit, alarm signal unit, magnetic recorder, unit for producing acoustic signals, high frequency oscillator, amplitude modulator, modulating code generator, phase manipulator, power amplifier, transmitting antenna, receiving antenna, retuning unit, intermediate frequency amplifier, detector, the first delay line, the first key, amplitude restrictor, synchronous detector, phase detector, the second delay line, the first unit for measuring spectrum width, phase doubler, the second unit for measuring spectrum width, the second comparison unit, the second threshold unit, the first amplitude detector, frequency detector, differentiating unit, the first monopolar rectifier, AND-gate, the second key, the second amplitude detector, video amplifier, the third comparison unit, the second monopolar rectifier, the third key and the fourth key. ^ EFFECT: improved noise immunity and selectivity of device receiver; suppressed false signals in additional channels. ^ 6 dwg |
