RU19619U1 - MESSAGE TRANSMISSION DEVICE - Google Patents

Abstract

1. A device for transmitting messages, containing a series-connected message former, amplifier, transmitter, message line, receiver, amplifier and message converter, characterized in that the transmitter is made in the form of a piezoelectric vibrator, the receiver is made in the form of a piezoelectric accelerometer, as a transmission line the metal shell of the ship’s hull is used, on which the transmitter vibrator and the receiver accelerometer are fixed. 2. The device according to claim 1, characterized in that the message converter is made in the form of a band-pass filter, the output of which is connected to the trigger input, and the output of the latter is connected to the actuator.

Description

MESSAGE TRANSMISSION DEVICE

The utility model relates to communication systems and telemechanics and can be used to transmit informational or control messages on ships and vessels of military and civil purposes, aviation, overpasses, large gas and oil pipelines, in administrative and residential complexes.

Analysis of the currently existing devices for transmitting such messages in the form of audio, video, radio or electrical signals shows that such devices include the following components:

signal source

converter-encoder of the signal to the form most adapted to propagation in the selected medium, the medium of signal propagation: air, water, electrically conductive materials,

a device and a converter-decoder for receiving a signal and bringing it to a form acceptable for perception and further processing.

The closest solution to the proposed one can be considered a device for transmitting and receiving information through the pipeline according to the patent of the Russian Federation No. 2053567, IPC: 008C 23/00, Н04В 11/00, dated 03.03. An audio signal is formed at one end of the pipeline, consisting of shock pulses of a certain duration and sequence. The signal is transmitted directly through the pipeline. At the other end of the pipe, a device is installed that receives sound signals and converts them into electrical ones. Next, the decryption of the signals for audio and telemetric use.

The disadvantage of such a device can be considered low noise immunity due to acoustic interference from accidental mechanical impact on the pipeline or from mechanisms working near the pipeline.

The objective of the proposed solution is to increase the noise immunity of the device, protect the device from unauthorized operation due to accidental mechanical effects on the pipeline, as well as expand the scope.

 j 4 1 37 5

MKI: Н04В.7 / 00; 11/00

message containing a serially connected message former, amplifier, transmitter, message transmission line, receiver, amplifier and message converter, the transmitter is made in the form of a piezoelectric vibrator, the receiver is made in the form of a piezoelectric accelerometer, the metal hull of the ship’s hull, on which are fixed transmitter vibrator and receiver accelerometer.

The converter can be made in the form of a band-pass filter connected to the input of the trigger, the output of which is connected to the input of the actuator.

The proposed device allows you to work with signals in the ultrasonic range, which eliminates the influence of noise in the audio range and helps to increase the noise immunity of the device.

The block diagram of the device shown in Fig 1.

The device comprises a message shaper 1 in the form of electric signals of ultrasonic (ultrasonic) frequencies, an amplifier 2 signals, a transmitter 3, a signal transmission line 4 in the form of a metal ship hull, a signal receiver 5, a pre-amplifier bandpass filter 7, a trigger 8 and an actuator 9 As a shaper of messages 1 on the transmitting side, a generator is used that generates electrical signals of ultrasonic frequencies; the transmitter 2 may be in the form of a piezoelectric vibrator mounted on a solid metal surface, for example, a ship structure, by means of a hairpin. The receiver 5 is a piezoelectric accelerometer-pp, also mounted on a solid metal surface by means of a pin, the output of the accelerometer 5 through a pre-amplifier is connected to the inputs of the triggers, the outputs of which are connected to the inputs of the actuators.

The use of bandpass filters in the ultrasonic range improves the quality of reception of the acoustic signal, and the use of acoustic signals at various frequencies in this range allows the simultaneous transmission of various information and control signals over several channels. Any solid medium (pipeline, ship's hull, etc.) can be used as an acoustic signal transmission medium. This allows you to significantly expand the scope of this device.

So using the device shown in FIG. 1, remote control of a marine electric motor can be implemented. A similar need may arise in extreme situations, when voice commands on the internal telephone do not reach, or the personnel are not able to control the mechanisms. In this case, if it is necessary to start the electric motor, the shaper 1 gives a command to turn on the electric motor in the form of an electric signal of a fixed ultrasonic frequency (electric motor start signal). Through amplifier 2, the signal enters the input of the transmitter 3, mounted on the hull structure of the vessel, where it is converted into an acoustic (vibrational) signal of a fixed ultrasonic frequency, which propagates through the hull of the vessel 4 and is received by the receiver 5, also attached to the hull of the vessel. At the receiver, the signal is converted into an electric signal of the same fixed ultrasonic frequency, which then passes through the preamplifier 6 to the input of the bandpass filter 7, tuned to the fixed ultrasonic frequency signal selected as the start signal of the electric motor.

From the output of the filter 7i, the signal is supplied to the first trigger 8i, as a result of which a high level signal is generated, which is transmitted to the actuator 9, which starts the electric motor. To stop the motor, a different command

frequency is supplied to the filter 72 and the trigger 82 / at the signal of which the actuator 9 stops the engine.

Claims (2)

1. A device for transmitting messages, containing a series-connected message former, amplifier, transmitter, message line, receiver, amplifier and message converter, characterized in that the transmitter is made in the form of a piezoelectric vibrator, the receiver is made in the form of a piezoelectric accelerometer, as a transmission line the metal shell of the ship’s hull is used, on which the transmitter vibrator and the receiver accelerometer are fixed. 2. The device according to claim 1, characterized in that the message converter is made in the form of a band-pass filter, the output of which is connected to the trigger input, and the output of the latter is connected to the actuator.