JPS63151128A - Submarinr communication equipment for submerged body - Google Patents

Abstract

PURPOSE:To always perform distinct underwater communication by automatically switching an upper transmitter-receiver and a lower transmitter-receiver and automatically selecting and using the lower transmitter-receiver when a submergible body is on the surface of sea water and automatically selecting and using the upper transmitter-receiver when the submergible body submerges. CONSTITUTION:When a power source is turned on, an output 16a of a reception decider 16 is automatically initialized so that code '0' is generated, and a lower transmitter- receiver 12 is selected. Consequently, when a submergible body 21 on which this submarine communication machine is mounted submerges, an upper transmitter-receiver 11 goes underwater and the signal transmitted from the lower transmitter-receiver 12 is received by the upper transmitter-receiver 11, and code '1' is outputted from the reception decider 16. As the result, a selector 10 is switched to connect the upper transmitter-receiver 11 to a transmission/reception coupler 9. In this state, the reception electric signal of the lower transmitter receiver 12 is inputted to the reception decider 16 through the selector 10, a reception detecting amplifier 14, and a band-pass filter 16. The reception decider 16 outputs code '1' when obtaining correlations between a signal 15a and a transmission electric signal 7a, but it outputs code '1' when it cannot obtain correlations.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an underwater communication device for a submersible, and in particular, it is installed in a manned submersible in the ocean or a submersible using a diving method suspended from a ship into the water. This invention relates to an underwater communication device for a submersible.

(Prior Art) Conventionally, this type of underwater communication device is composed of one transducer for transmitting or receiving sound wave signals and one transceiver connected to the transducer. The container is installed at the top or bottom of the submersible. In addition, as a second conventional example, a transducer 2
There is one that consists of a base and one transceiver, and one transducer is installed at the top and bottom of the submersible. Furthermore, as a third conventional example, there is a submersible body equipped with two underwater communication devices each consisting of one transducer and one transceiver in order to improve the reliability.

(Problem that the invention attempts to solve) The conventional underwater communication device described above has the following drawbacks.

When a submersible is equipped with an underwater communication device consisting of one transducer and one transceiver, one transducer is provided only at either the upper or lower part of the submersible.

For example, if the transducer is provided at the top, the transducer will not function as an underwater communication device before the submersible submerged or at the beginning of the submersible because the transducer will protrude into the air.

Conversely, if the transducer is installed at the bottom, when the submersible is submerged or in seawater, the air chamber and various equipment in the submersible's crew compartment may become obstacles to the ultrasonic propagation path. As a result, communication quality deteriorates.

In order to avoid this, there is a method of installing transducers at the top and bottom of the submersible, as shown in the second and third conventional examples, but the selection and switching of the transducers at the top and bottom can be done in a closed room. Since this was done manually inside the submersible, it was not possible to perform optimal switching, and there were drawbacks such as switching after a communication error occurred.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a communication device for a submersible that can perform clear communication.

(Means for Solving the Problems) In order to solve the above-mentioned problems and achieve the above objects, the communication device for a submarine provided by the present invention receives a sound wave signal propagating underwater and transmits received electricity. Transducers and receivers are provided at respective positions in the upper and lower parts of the submersible body and protrude from the submersible body into the water. a transceiver that processes the received electrical signal and converts transmission information into the transmitted electrical signal and outputs the transmitted electrical signal, and one of the two transducers is selected and connected to the transceiver. and a selection switching means for outputting a received electrical signal of the other transducer and a correlation determination device that determines the correlation between the received electrical signal of the other transducer and the transmitted electrical signal of the transducer and outputs a discrimination signal. means is provided inside the submersible; the selection switching means switches the other transducer to the transceiver only when the discrimination signal indicates that the correlation has been obtained; It is characterized by connecting.

(Example) FIG. 1 is a layout diagram showing the layout of each circuit section of the present invention.

An upper transducer 11 and a lower transducer 12 are disposed at the top and bottom of the submersible body 21, respectively. The upper transducer 11 and the lower transducer 12 protrude outward from the submersible body 21. In FIG. 1, the submersible 21 is located at sea level 2.
2 shows the case where the submersible body 21 has surfaced, and when the submersible body 21 is submerged, both the upper transducer 11 and the lower transducer 12 are located underwater. 31 is a transmitting/receiving means, which is connected to the upper transducer 11 and the lower transducer 12. This transmitting/receiving means 31 incorporates a transmitting/receiving device and a correlation determining means, which will be explained later. In addition, an upper transducer 11 and a lower transducer 12
The receiver receives a sound wave signal propagating in water, converts it into a received electric signal, converts the transmitted electric signal of the transceiver into a sound wave signal, and transmits the sound wave signal into the water.

FIG. 2 is a block diagram showing one embodiment of the present invention, and FIG. 3 is a block diagram showing essential parts of the embodiment shown in FIG.

The audio signal 1a is input to the microphone 1 and converted into an electrical signal 1b. This signal 1b is band-amplified by an amplifier 3 and input to a mixer 4.

A signal 5a of a predetermined carrier frequency oscillated by an oscillator 5 is input to the mixer 4, and a signal 4a obtained by mixing the amplified audio signal and the signal 5a is output from the mixer 4. This output 4a is input to a bandpass filter 6, removes unnecessary frequency components, and is shaped into a signal 6a containing only frequency components to be transmitted. This signal 6a is sent to a power amplifier 8 via a transmission/reception changeover switch 7. The signal 8a whose power has been amplified by the power amplifier 8 is sent to the upper transducer 11 and the lower transducer 12 via the transducer coupler 9 and the selector 10.
The signal is sent to one of the transducers. Normally, before diving, the submersible body 21 floats to the sea surface, the upper transducer 511 is exposed to the air, and only the lower transducer 12 is immersed in the seawater. Therefore, in this underwater communication device, when the power is turned on, the lower transducer 12 is connected to the transceiver coupler 9 via the selector 10.

Here, the other transducer 11 receives the transmitted signal from the transducer 12 and converts it into a received electrical signal t1a.

This received electrical signal 11a is amplified by a receiving detection amplifier 14 via a selector 10, and then is passed through a bandpass filter 1.
5, unnecessary frequency components are removed and a signal 15a is output. This output signal 15a is sent to a reception determiner 16. The reception determiner 16 uses the power amplifier 8 as a transmission electric signal.
A signal 7a, which is the same as the input signal of , is input, and this signal 7a is compared with the output signal 15a of the bandpass filter 15 to check the correlation between both signals. When the received electrical signal 11a from the upper transducer 11 is not received, the code "0" is sent, and when the received electrical signal 11a is received and a correlation is established, the code "1" is sent from the reception determiner 16. Output. When the output code of the reception determiner 16 is “O”, the signal 16 is sent to the transducer selection control circuit 13.
The transducer selector 10 is held so as to output signal a and connect the lower transducer 12 to the transducer coupler 9. When the output code of the reception determiner 16 is "1", the signal 16a is output to the transducer selection control circuit 11113 to connect the upper transducer 11 to the transducer coupler 9. switch the device selector 10.

Therefore, when the power is turned on, the output lea of the reception determiner 16 is automatically initialized to generate the code "0", and the lower transducer 12 is selected.

Therefore, when the submersible 21 equipped with this underwater communication device dives, the upper transducer 11 is submerged underwater, and the signal transmitted from the lower transducer 12 is received by the upper transducer 11, and the reception is determined. The code “1” is output from the device 16. As a result, the selector 10 is switched and the upper transducer 11 is connected to the transducer coupler 9.

In this state, the electric signal received by the lower transducer 12 is inputted to the reception determining unit 16 via the selector 10, the reception detection amplifier 14, and the bandpass filter 15.

The reception determiner 16 outputs a code "1" when a correlation is obtained between the signal 15a and the transmitted electrical signal 7a, and conversely, when no correlation is obtained, that is, when the received electrical signal of the lower transducer 12 is input. If not, output code "O".

As a result, when the submersible 21 is submerged, the upper transducer 11 is always selected, and when the submersible 21 rises and the upper transducer 11 comes out into the air, the lower transducer 11 is automatically selected. Wave device 12 is selected.

BACKGROUND ART In an ultrasonic communication device that performs bidirectional communication that receives signals from a watercraft or the like equipped with an underwater communication device, a receiving circuit for signals transmitted from the watercraft or the like is required. This circuit will be explained below.

The signal received by the upper transducer 11 or the lower transducer 12 is input to the transducer coupler 9 via the transducer selector 10. Since the signal level of the output signal of the transmitting/receiving coupler 9 is low, it is amplified by the receiving amplifier 17 and then input to the bandpass filter 6 via the transmitting/receiving switch 7 to remove signals in unnecessary frequency bands. be done. The output signal of this band-pass filter 6 is passed to the mixer 4 and output 5 of the oscillator 5.
a and converted into an audio signal. This audio signal is amplified by the output amplifier 18 and then output as audio from the speaker 2, so that the operator inside the submersible 21 can be alert.

FIG. 3 is a block diagram showing the internal configuration of the reception determiner 16.

A transmission signal 7a is input from the terminal 101. This signal 7
a is a delay circuit 10 for the time required for the ultrasonic signal to propagate between the upper transducer 11 and the lower transducer 12;
After being delayed by 2, the signal is input to the correlator 103. On the other hand, the received signal 15a is input from the terminal 104 to the correlator 103.
is input. The correlator 103 determines the correlation between these two signals, and only when there is a correlation, the code “1'' is output.
Conversely, when there is no correlation, the circuit 1 holds the code “0”.
Output to 05. The bold circuit 105 holds this code information and transmits it from the terminal 106 to the transducer selection control circuit 1.
Output to 3.

FIG. 4 is a block diagram showing a second embodiment in which the underwater communication device for a submersible according to the present invention is used for a data transmitting device.

In place of the microphone 1 shown in FIG. 2, a transmission data generator 19 is connected which compiles various measurement information and the like to be transmitted from the submersible 21 to a watercraft or the like. Further, instead of the speaker 2, a received data display/recorder 20 is connected. This makes it possible to transmit various measurement information within the submersible 21 from the submersible 21 to a surface vessel, etc., and conversely, it becomes possible to receive and process information sent from a surface vessel, etc. within the submersible 21. .

<Effects of the Invention> As explained above, according to the present invention, the upper transducer and the lower transducer are automatically switched, and when the submersible is above the sea surface, the lower transducer is switched back and forth between the submersible and the lower transducer. When the body is submerged, the upper transducer is automatically selected and used, resulting in clear underwater communication at all times.

[Brief explanation of the drawing]

Fig. 1 is a layout diagram showing the arrangement of each circuit section of the present invention;
FIG. 3 is a block diagram showing one embodiment of the present invention, FIG. 3 is an internal configuration diagram of the reception determiner of FIG. 2, and FIG. 4 is a block diagram showing another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Microphone, 2... Speaker, 3... Amplifier, 4... Mixer, 5... Oscillator, 6... Band pass filter, 7... Transmission/reception changeover switch, 8...・
Power amplifier, 9... Transducer/receiver coupler, 10... Transducer/receiver selector, 11... Upper transducer/receiver, 12... Lower transducer/receiver, 13... Transducer/receiver selection control circuit, 14... Reception detection amplifier, 15... Band pass filter, 16
... Reception determiner, 17... Reception amplifier, 18...
Output amplifier, 19... Transmission data generator, 20...
Received data display recorder, 21... diving object, 22...
sea level, 101... terminal, 102... time delay circuit, 103... correlator, 104... terminal, 105...
-Hold circuit, 106...terminal.

Claims (1)

[Scope of Claims] A transducer that receives a sound wave signal propagating underwater, converts it into a received electric signal, converts a transmitted electric signal into a sound wave signal, and transmits the sound wave signal into the water, is provided in a submersible. A transceiver that processes the received electrical signal and converts transmission information into the transmitted electrical signal and outputs the transmitted electrical signal; selection switching means for selecting one of the two transducers provided at the bottom and connecting it to the transducer and outputting the received electrical signal of the other transducer;
Correlation determining means for determining the correlation between the electric signal received by the other transducer and the electric signal transmitted by the transceiver and outputting a determination signal is provided inside the submersible body; , and switches the other transducer to the transceiver only when the discrimination signal indicates that a correlation between the received electrical signal of the other transducer and the transmitted electrical signal of the transceiver has been obtained. An underwater communication device for a submersible, characterized by being connected to.