JPH01202943A - Communication equipment in shell of submarine - Google Patents

Abstract

PURPOSE:To attain transmission of information without provision of a through- hole to an inner shell by transmitting command information acoustically via the inner shell. CONSTITUTION:A transmitter-receiver section 1 having a transmitter-receiver equipped to both sides of the inner shellwhile its acoustic window is opposed to each other, a transmission section 2 outputting a transmission signal to the transmission reception section 1 and a reception section 3 receiving a reception signal from the transmission reception section and outputting communication information included therein are provided. The transmitter 11 converts the input into an acoustic output and sends it to the receiver 12 while using the inner shell as the transmission path. Moreover, the receiver 12 receives it, converts it into an electric output and sends the result to the reception section 3 as the reception signal. The means to transmit/receive the content to be communicated between the inner and outer sides of the inner shell acoustically is provided in this way, then no through-hole is required in the inner shell thereby enhancing the safety.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a submarine shell communication device, which transmits necessary commands from inside the inner shell to equipment installed outside the inner shell of the submarine. Concerning submarine shell communications equipment for communication.

[Conventional technology]

It is well known that submarines have an inner shell having a water pressure resistant structure and an outer shell as an outer structure of the inner shell. On the outside of the inner shell, mainly between the inner and outer shells, equipment of the type necessary for the operation of the submersible 1a is installed, and this is likely to increase in the future. Many of these equipment are operated while receiving necessary commands such as operation commands via electric wires that penetrate the inner shell from inside the inner shell. .

[Problems to be Solved by the Invention] As mentioned above, this type of conventional communication was carried out by drilling a hole in the inner shell of the water pressure resistant structure during the construction stage, passing it through @+11, and treating it with water pressure resistance. There is. However, drilling one or more through-holes into the special alloy inner shell is extremely expensive and requires strict maintenance and management for subsequent safety. There is.

Particularly, when the equipment involves drilling holes in the inner shell of the submarine after completion, such as adding some equipment, there is a disadvantage that the above-mentioned problems are inevitably further complicated.

The object of the invention is to eliminate the above-mentioned drawbacks, and to provide a means for acoustically transmitting and receiving the contents to be communicated between the inside and outside of the inner shell, thereby eliminating the need to make a through hole in the inner shell, thereby reducing costs. The object of the present invention is to provide a submarine shell communication device that can significantly improve safety.

[Means for solving problems]

The device of the present invention is a submarine shell communication device that transmits command signals from the inside of the submarine's inner shell to the equipment on the outside.
A transmitting/receiving device in which a transmitter having an acoustic window closely attached to the inside of the inner shell and a receiver having an acoustic window closely attached to the outside of the inner shell are arranged so that the acoustic windows face each other through the inner shell. a transmitting section that sends a pulsed superstition signal to the transmitter based on the baseband data to be communicated; and a transmitting section that receives the acoustic output transmitted by the transmitter. and a receiving section that inputs the received signal output from the old wave receiver and extracts and outputs the baseband data included in the transmitted signal.

〔Example〕

Next, the invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention. The actual M4 example shown in Fig. 1 includes a wave transmitter/receiver unit I having a transmitter/receiver/M unit equipped with acoustic windows facing each other on both sides of the inner shell, and a transmitter that outputs a transmission signal to the wave transmitter/receiver unit. Part 2. It is composed of a receiving section 3 which receives a received signal from a wave transmitting/receiving section and outputs communication information included in this part.

The wave transmitting/receiving section has a transmitter 11 and a receiver 12, and the transmitter and receiver are equipped with acoustic windows in close contact with each other inside and outside the inner shell, and the f9 windows are separated from each other by the inner shell. Assume that they are facing each other.

The transmitter 2 includes a pulse code generator 2 and an amplitude modulator 22.
1 inflator 23. It is configured to include an additional I-jima device 24.

The pulse code generator 1 receives various commands as command signals to be transmitted to the equipped equipment via the receiver 2, generates a pulse code with a different code sequence depending on the content of the command using a coder, and converts the pulse code into an amplitude. It is supplied to the f adjuster I2. This code sequence has a binary logical value @I'1. A specific time series of ``'0'' is used.

The amplitude modulator 22 is installed to receive a wave brought in from the excavator 23, and the 8 transmitted waves are modulated by the pulse code received from the pulse code generator 21, thereby generating PCW (Pulsed C).
W) Generate α and send it to amplifier λ4.

The frequency of the carrier wave output from the excavator 2.3 is MHz, which is the frequency of the carrier wave output by the receiver 2 of the wave transmitter/receiver 1, which will be described later.
By removing the high energy band of various noise components that propagate through the inner shell and input into 2, i% S /N (8ignal/No1
se) Based on what you are trying to receive.

Further, the pulse width rpl of the PCW wave outputted from the first-wave modulator 22 is set to be shorter than τ shown in the following equation (1).

τ = 2t/C... (1) In the +11 formula, t is the thickness of the inner shell, C is the speed of sound, and τ is the wave transmitted from the transmitter 11, propagates through the inner shell, and reaches the receiver. This is the arrival time of a reflected wave that is reflected at the interface between the receiver 12 and the inner shell among the sound waves traveling to the wave receiver 12. Now, t=j;<,
*, C=5000m/s (in the case of m), then = 2
It becomes 0μSEC.

Also, the pulse interval T2 of the PCW wave should be set longer than the reverberation duration TFL shown by the following equation (2).

Ta = Qm
In equation 2), Qm is the mechanical Q of the transmitter 11, and f
r is the resonant frequency. The time series of the pulse code that should form the PCW wave is determined by taking into consideration the above fl) and equation (2).

The amplifier 24 amplifies the input PCW to a predetermined level, and then outputs and applies the amplified PCW to the wave transmitter 11 of the wave transmitting/receiving section I.

The wave transducer 11 converts the input into acoustic output and transmits it to the wave receiver 12 using the inner shell as a transmission path. Moreover, the wave receiver 12 receives this, converts it into an electrical output, and sends it to the receiving section 3 as a received signal.

The receiving section 3 includes an amplifier 3 ], BPF (BandP
ass Filter) 32, detector 33. An amplifier 31 receives the received signal output from the wave receiver 2, which includes a command determiner 34, etc., and amplifies it to a predetermined level and outputs it. Thereafter, the BPF 32 performs a predetermined band filtering, and then the detector 33 detects and outputs the original pulse code, and supplies it to the command determiner 34.

The "Command 1" determiner 34 uses a decoder or the like to determine the content of the input command, and then sends the determination command as a reception output to the equipment specified by the content of the determination command. The equipment that receives this received output then initiates a predetermined operation, such as driving an actuator.

Note that in the above-described embodiment, baseband data as a command is used in the form of a PCW wave, but instead of this, a transmission signal in another format in which a carrier wave is pulse-modulated based on the baseband data may be used. Good too. For example, as an example of this, a transmission signal using a spectrum amplification type 4U can also be considered. As an example of this, in the embodiment shown in FIG. 1, it would be easy to implement spectrum spreading by frequency hopping that uses the "1" level of the PCW wave pulse-modulated by the database as fl, ""oM0M level). Obviously, this also makes it possible to further improve the S/N with respect to noise received during inner shell propagation.

〔Effect of the invention〕

As explained above, according to the present invention, by acoustically transmitting command information through the inner shell, information can be transmitted without providing a through hole in the inner shell, which is extremely safe and low cost. Deployment of equipment.

In addition to being able to add information, it is also possible to selectively transmit specific commands by encoding the transmission information.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention. 1... Wave transmitting/receiving section, 2... Transmitting section, 3.
...Receiving section, 11... Speed wave device, 12...
...Receiver, 21...Pulse code generator,
22... amplitude modulator, 23... oscillator, 24... amplifier, 31... amplifier,
32...BPF, 33...Detector, 3
4...Command judger. Agent Patent Attorney Susumu Uchihara

Claims (1)

[Claims] A submarine shell communication device that transmits command signals from the inside of the submarine's inner shell to the equipment on the outside includes a transmitter that has an acoustic window closely attached to the inside of the inner shell, and an acoustic window that is closely attached to the outside of the inner shell. A transmitter/receiver is equipped with a transmitter/receiver unit whose acoustic windows are arranged so as to face each other through the inner shell, and a transmission signal in which a carrier wave is pulse-modulated based on baseband data to be communicated is sent to the transmitter. a transmitter that transmits a signal; and a receiver that receives a received signal output from the receiver that receives the acoustic output transmitted by the transmitter, detects baseband data included in the transmit signal, and outputs the detected baseband data. A submarine shell communication device characterized by comprising: