RU2494914C1 - Diver direction-finder - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to diving equipment, particularly, to underwater sound communication and direction-finding means used by divers. Diver direction-finder integrated with underwater sound communication station consists of pulse generator and two identical pulse receivers, each being provided with antenna arranged at the left or the right of diver. Outputs of direction-finder receive channels are connected with switchboard which connects diver left or right phones to underwater sound station depending upon antenna receiving pulse generator signals from another diver.

EFFECT: simultaneous communication and direction-finding.

2 cl, 1 dwg

Description

The invention relates to diving equipment, in particular to equipment for sound communication and direction finding used by divers.

There are well-known sonar acoustic communication stations for divers (domestic MGV-6V, foreign SSB-1001B, SSB-2010, HT-100N, etc.), which do not have the function of direction finding of speech and telegraph signals.

From the theory of hydroacoustic acoustics known amplitude, phase and differential-ranging methods of direction finding (Handbook of hydroacoustics. - L .: Sudostroenie, 1988, pp. 17-18).

Domestic direction finder MGV-3M and foreign sonar direction finders DNS-1, DNS-2, PR-1 are known, using the amplitude direction finding method.

The amplitude method is the simplest in technical implementation. It is widely used in GAS noise-detecting and sonars described in the book: A.M. Tyurin and others. Fundamentals of hydroacoustics. - L .: Shipbuilding, 1966, pp. 176-214 (analogues of the invention). The amplitude method is implemented in the domestic equipment of the MGV-3M diver, which was produced before 1983 by the Akhtuba Volgograd Plant (prototype of the invention). The direction finder has a width of the directivity in the horizontal plane of 60 degrees and, at the same time, provides an accuracy of direction finding of 7-10 degrees.

The disadvantages of the direction finder equipment MGV-3M include:

- a relatively narrow radiation pattern that does not allow to simultaneously detect the work of the beacon in the circular sector;

- the inability to use the direction finder for communication between divers;

- the impossibility of direction finding of conventional connected hydroacoustic stations of divers (voice and telegraph communications).

In the practice of diving descents, it is often necessary to determine the direction of the diver you are talking to and to reach it. For example, a partner needs help or he found something interesting.

The present invention is the creation of a direction finder diver, combined with the station ZPS, which would allow for sonar communication and at the same time to perform direction finding sonar signals of another diver.

The problem can be solved by adding a diverting direction finding function using the differential-ranging method to a conventional GAS sound-diving connection (ZPS). For this, a direction finder is added to each GAS communication, which includes a short pulse generator and two receiving channels for these pulses. Channel inputs are connected to two antennas - left and right. The outputs of the receiving channels are connected to the switch, which connects the left or right diver phones to the PLC station, depending on which antenna the signal from the pulse generator of another diver comes to before.

Figure 1 shows the block diagram of the proposed GAS diver for communication and direction finding, hereinafter referred to as direction finder diver.

The diver’s direction finder contains the left antenna 1, the right antenna 2 (the antennas are mounted on the diver’s helmet or breathing apparatus), the antenna of the station 3, the left receiving channel of pulses 4, the right receiving channel of pulses 5, the telephone switch 6, the receiving path of the ZPS 7 transmitting path ZPS 8, the generator of short pulses 9, the power button of the pulse generator and the transmitting path ZPS 10, the left telephone diver 11, the right telephone diver 12.

The direction finder works as follows. During communication (when the “10” button is pressed), the GAS of the first diver transmits voice or telegraph messages and periodically (with an interval of 3-5 seconds) emits short pulses at a frequency different from the communication frequency. For example, if communication is carried out at a frequency of 30 kHz, then pulses are emitted at a frequency of 40 kHz. They do not interfere with communications, because do not fall into the passband of the receive path of the RPS.

At the other end of the communication line, where the second diver receives ZPS signals, at the same time its direction finder (channels 4 and 5) receives pulses from the generator 9 of the first diver. If the pulse source is located to the left of the diver, then the pulse arrives to the left antenna 1 earlier than to the right antenna 2. Then the switch 6 connects the diver’s left telephone 11 to the RPS path 7. The phone remains on until the next pulse arrives.

If the pulse source is located to the right of the diver, then the pulse arrives to the right antenna 2 earlier than to the left antenna 1. Then the switch 6 connects the right diver telephone 12 to the path of the RPS 7. The phone remains on until the next pulse arrives.

If the source of pulses is at the diver's direction of travel or exactly behind, then the pulses arrive at switch 6 simultaneously, and it turns on both diver phones.

Thus, due to the switching of the left and right phones, the diver knows exactly where his partner is and can go out by turning it left or right until both phones turn on. If divers follow the group, then each diver can determine where the speaker is currently located - to his left, right, or heading. He can come to him and provide the necessary assistance.

Claims (2)

1. Diver direction finder, combined with a sound supply station, consisting of a pulse generator and two identical receiving channels of pulses, each of which has its own antenna mounted to the left or right of the diver, characterized in that the outputs of the receiving channels of the direction finder are connected to a switch that connects to the sound supply station, the diver’s left or right telephones, depending on which antenna the signal from the pulse generator of another diver comes to before. 2. The diver’s direction finder according to claim 1, characterized in that the sound supply station and the pulse generator are controlled by a single “Transmit” button, when pressed, the pulse generator is started, and the sound supply station is switched on to transmit voice or telegraph messages.