SU862370A1 - Acoustic retranslator - Google Patents

Description

(54) ACOUSTIC REPEATER

one

The invention relates to electrical communication and can be used in frequency division multiplexed transmission systems.

An acoustic transponder is known that contains a series-connected bandpass filter, an amplifier, an amplitude detector, a threshold unit, a recovery unit, an amplitude manipulator, and a low-pass filter, the second output of the recovery unit connected to the sinusoidal signal generator input.

However, the known device is characterized by a low accuracy of acoustic signal recovery.

The purpose of the invention is to improve the accuracy of recovery; Acoustic signal by adapting the signal to interference.

For this, in the acoustic transponder, the recovery unit is designed as a series-connected integrator, an NAND element and a trigger, with the first trigger output connected to the input of the AND element, the other input of which is connected to the integrator input, the second input of the NAND element and the second input trigger In this case, the second input of the element AND, the second output of the trigger, and the output of the element AND are the corresponding inputs and outputs of the recovery unit.

The drawing shows a structural electrical circuit of the proposed device.

The acoustic transponder contains an input bus 1 (control, its signal), a band-pass filter 2, an amplifier 3, an amplitude detector 4, a threshold unit 5, a recovery unit 6, an amplitude manipulator 7, a low-pass filter 8, a generator of 9 sinusoidal signals. The recovery block10 does not contain an element AND 10 and a series-connected integrator 11, an element IS-HE 12 and a trigger 13 (of type RS).

The device works in the following way.

Claims (1)

Telecontrol signals in the form of radio signals are fed through the input bus 1 of the control of its signal, which are fed through a band-pass filter 2 and amplifier 3 to the amplitude detector 4. From the amplitude detector 4, signals are fed through the threshold unit 5 to the integrator 11, the I20 HE element, and 12 trigger 13. The signals from the inverse trigger output trigger generator 9 of sinusoidal signals, and also pass through AND 10 and trigger amplitude manipulator 7, which is essentially controlled by a radio signal generator. The signal from the manipulator 7 is fed through a low-pass filter 8 to the output bar 14. In the initial state, the generator 9 of sinusoidal signals and the amplitude manipulator 7 do not work. To turn on the generator 9 of sinusoidal signals, a first radio pulse is fed to the input bus 1 of the control signal, which, after conversion, goes to the NAND 12 element from the output of the threshold unit 5 directly and through the integrator 11. At the output of the NAND 12 element, a trigger setup signal 13 is generated in one state, which leads to the start of the generator 9 sinusoidal signals. In this case, the amplitude manipulator 7 does not work, since element 10 is closed by a prohibiting zero signal from the inverse output of trigger 13. Amplitude manipulator 7 is turned on when a radio pulse appears on the input busbar 1 of the control signal after a short interruption. In this case, the integrator 11 does not have time to discharge, and at its output remains the signal "zero, which prohibits the operation of the element AND NOT 12, acting on the input of the trigger 13. During a brief interruption at the input of the threshold unit 5, the signal" zero, which sets trigger to zero state. In this case, the element 10 also opens with a signal from the inverted output of the trigger. Upon receipt of the second and subsequent radio pulses through the AND 10 element, the amplitude manipulator 7 is started, the output signals of which pass through the low-pass filter 8 to the output bus 14. Thus, the signals are transmitted to the input bus 1. After a long break between the radio pulses, exceeding the deceleration time of the integrator 11, the signal "one" is set at the output of the integrator, and the amplitude manipulator 7 and the generator 9 of the sinusoidal signals are turned off by the trigger 13 and the element 10. decomposition device allows to reduce the error when restoring the acoustic signal. An Acoustic Transponder comprising a series-connected bandpass filter, an amplifier, an amplitude detector, a threshold unit, a recovery unit, an amplitude manipulator, and a low-pass filter, the second output of the recovery unit being connected to the input of a sinusoidal signal generator, characterized in that In order to improve the accuracy of acoustic signal recovery by adapting the signal to interference, the weighing unit is made in the form of a serially connected integrator a trigger, wherein the first output of the trigger is connected to the input of the AND element, the other input of which is connected to the input of the integrator, the second input of the AND-NOT element and the second input of the trigger, while the second input of the AND element, the second output of the trigger and the output of the AND element are respectively, the inputs and outputs of the recovery unit. Sources of information taken into account in the examination 1. Japanese patent number 52--21331, cl. 102 E / 5, 1976 (prototype);