JP4829810B2 - Wireless relay device - Google Patents

Description

  The present invention relates to a wireless relay device.

Conventionally, an ultrasonic underwater communication device as described in Patent Document 1 is used as an underwater communication device that performs communication between underwater divers. When a person on a ship such as a boat communicates with an underwater diver, as shown in FIG. 4, communication is performed using the ultrasonic underwater communication device 1 of the diver and the ultrasonic underwater communication device 2 on the ship. 2A is an ultrasonic transducer immersed in water.
JP-A-8-8840

  However, since a human in the air or land that has a long distance to the water surface such as a helicopter communicates with an underwater diver, as shown in FIG. 5, the ultrasonic underwater communication device 1 of the diver and the ultrasonic underwater communication device 3 of the air When communicating using this, it is necessary to connect the ultrasonic underwater communication device 3 in the air and the ultrasonic transducer 3A immersed in water with an extremely long cable 3B. A communicable range such as a diver, and thus an action range, is limited by the length of the cable 3B, and installation and storage of the long cable 3B are troublesome, and convenience is low.

  In addition, the communicable range between divers and the action range are also limited to a relatively narrow communicable distance range of the ultrasonic underwater communication device 2.

  An object of the present invention is to widen the communication range of a diver using an ultrasonic underwater communication device.

The invention of claim 1 is a wireless relay device that relays between a radio wave communication device and an ultrasonic underwater communication device, or relays between remote ultrasonic underwater communication devices, and transmits and receives radio wave signals to and from the radio wave communication device A radio wave transmission / reception unit, an ultrasonic wave transmission / reception unit that transmits / receives ultrasonic signals to / from the ultrasonic underwater communication device, and a reception result transmitted from the radio wave communication device and received by the radio wave transmission / reception unit to the ultrasonic wave transmission / reception unit. The ultrasonic transmission / reception unit is switched to the transmission state, the reception result of the wireless radio wave transmission / reception unit is converted into an ultrasonic signal by the ultrasonic transmission / reception unit, and the ultrasonic wave is transmitted from the ultrasonic underwater communication device. Transmits the reception result received by the transmitter / receiver to the radio wave transmitter / receiver, switches the radio wave transmitter / receiver to the transmission state, converts the reception result of the ultrasonic transmitter / receiver to a radio wave signal at the radio wave transmitter / receiver, and enables transmission A radio relay apparatus including a reception switching relay circuit unit, wherein the radio wave transmission / reception unit includes a reception circuit, a transmission circuit, and a transmission switching circuit, and the ultrasonic transmission / reception unit includes a reception circuit and a transmission circuit. And the transmission switching circuit, and the transmission / reception switching relay circuit unit is driven using the audible sound as the reception result of the radio wave transmission / reception unit as it is, and the transmission switching circuit of the ultrasonic transmission / reception unit is used as the transmission circuit. A switch signal generation circuit that switches the ultrasonic transmission / reception unit to the transmission state by turning it on, and after detecting a specific audio signal , the audible sound that is the reception result of the ultrasonic transmission / reception unit is immediately used as it is, and radio wave transmission / reception is performed A transmission switch signal generation circuit for switching the radio wave transmission / reception unit to a transmission state by turning on the transmission circuit of the unit and turning on the transmission circuit. The switching relay circuit unit immediately uses the audible sound that is the reception result of the radio wave transmission / reception unit to drive the transmission switching circuit of the ultrasonic wave transmission / reception unit, and the speaker amplifier circuit of the radio wave transmission / reception unit and the microphone amplifier of the ultrasonic wave transmission / reception unit The circuit is connectable, and after detecting the specific audio signal , the audible sound as the reception result of the ultrasonic transmission / reception unit is immediately used as it is to drive the transmission switching circuit of the radio wave transmission / reception unit, and the ultrasonic transmission / reception unit The speaker amplifier circuit can be connected to the microphone amplifier circuit of the radio wave transmission / reception unit.

According to a second aspect of the present invention, in addition to the first aspect of the present invention, the wireless relay device is installed in a buoy or the like.

The invention of claim 3 uses a radio wave communication device, an ultrasonic underwater communication device, and the wireless relay device according to claim 1 or 2, between the radio wave communication device and the ultrasonic underwater communication device, Or it is a radio | wireless communications system which enables communication between the several ultrasonic underwater communication apparatus which is distant .

(Claims 1 and 3 )
(a) A radio relay device is interposed between the radio wave communication device and the ultrasonic underwater communication device, and the radio wave communication device and the ultrasonic underwater communication device are relayed by the radio relay device, thereby It is possible to communicate between the sonic underwater communication devices, and the communication range of the diver using the ultrasonic underwater communication device can be widened.

  (b) A wireless relay device is interposed between the remote ultrasonic underwater communication devices, and the ultrasonic underwater communication devices are relayed by the wireless relay device, thereby communicating between the ultrasonic underwater communication devices. The communication range of the diver using the ultrasonic underwater communication device can be widened.

(c) In the wireless relay device, the radio wave transmission / reception unit includes a reception circuit, a transmission circuit, and a transmission switching circuit, and the ultrasonic transmission / reception unit includes a reception circuit, a transmission circuit, and a transmission switching circuit. Then, the transmission / reception switching relay circuit unit is driven based on the reception result of the radio wave transmission / reception unit, and switches the ultrasonic transmission / reception unit to the transmission state by turning on the transmission circuit by performing the transmission switching circuit of the ultrasonic transmission / reception unit. Radio wave transmission / reception, which is driven based on the reception result of the ultrasonic transmission / reception unit after detection of the transmission switch signal generation circuit and the specific audio signal, and turns on the transmission circuit by turning on the transmission circuit of the radio wave transmission / reception unit A transmission switch signal generation circuit that switches the unit to a transmission state. As a result, the wireless relay device has a simple configuration for each of the wireless radio wave transmission / reception unit, the ultrasonic wave transmission / reception unit, and the transmission / reception switching relay circuit unit, relays the radio wave communication device and the ultrasonic underwater communication device, or remotely Relay between sonic underwater communication devices.

(d) In the wireless relay device, the transmission / reception switching relay circuit unit drives the transmission switching circuit of the ultrasonic transmission / reception unit using the audible sound that is the reception result of the wireless radio wave transmission / reception unit, and The speaker amplifier circuit and the microphone amplifier circuit of the ultrasonic transmission / reception unit can be connected, and after detecting a specific audio signal, the transmission switching circuit of the radio wave transmission / reception unit is used by using the audible sound that is the reception result of the ultrasonic transmission / reception unit. The speaker amplifier circuit of the ultrasonic transmission / reception unit and the microphone amplifier circuit of the radio wave transmission / reception unit can be connected. As a result, the ultrasonic transmission / reception unit is switched to the transmission state by using the audible sound such as the voice as the reception result of the radio wave transmission / reception unit, and the voice as the reception result of the ultrasonic transmission / reception unit after the detection of the specific audio signal is possible. The radio wave transmission / reception unit can be switched to the transmission state using the listening sound.

(Claim 2 )
(e) By installing a radio relay device on a buoy or mooring externally to other sea surface installations such as buildings, ships, etc. A communication device can be relayed. In addition, by installing a wireless relay device on each of a plurality of sea surface installations such as buoys, it is possible to relay the ultrasonic underwater communication devices of divers located at a distance or place where the ultrasonic underwater communication device cannot reach.

  1 is a schematic diagram illustrating a wireless communication system, FIG. 2 is a schematic diagram illustrating a use state of the wireless communication system, FIG. 3 is a block diagram illustrating a wireless relay device, FIG. 4 is a schematic diagram illustrating a conventional example, and FIG. It is a schematic diagram which shows the prior art example.

  As shown in FIG. 1 and FIG. 2, the wireless communication system 1 has the same frequency of M radio transceivers 10 such as M transceivers that can communicate on the same channel on a ship, helicopter, land, etc., and a diver underwater. N ultrasonic underwater communication devices 20 (20A) that can communicate with each other are relayed by a wireless relay device 40 (40A) installed on a buoy 31 that floats on the water surface, and these radio wave communication devices 10 and the ultrasonic underwater communication device 20 Communication between the two. In addition, as shown in FIG. 2, the wireless communication system 1 communicates between the ultrasonic underwater communication devices 20 (20 </ b> A and 20 </ b> B) that can communicate at the same frequency that divers in remote water communicate with each other. The wireless relay device 40 installed in each of the buoys 31 and 32 located far beyond the possible range (range where the radio wave transmission / reception unit 100 of the wireless relay device 40A and the radio wave transmission / reception unit 100 of the wireless relay device 40B reach) (40A, 40B) to enable communication between the ultrasonic underwater communication devices 20A, 20B.

  As shown in FIGS. 1 and 3, the wireless relay device 40 includes a radio wave transmission / reception unit 100, an ultrasonic transmission / reception unit 200, and a transmission / reception switching relay circuit unit 300.

  The radio wave transmission / reception unit 100 can use a transceiver or the like compatible with the radio wave communication device 10 described above, and the radio wave communication device 10 and the radio wave via the antenna 101 standing in the air from the buoys 31 and 32. Send and receive signals.

  The ultrasonic transmission / reception unit 200 has the same function as that mounted on the ultrasonic underwater communication device 20, and is connected to the ultrasonic underwater communication device 20 via the ultrasonic transducer 201 immersed in water from the buoys 31 and 32. Send and receive ultrasonic signals.

  The transmission / reception switching relay circuit unit 300 transmits the reception result transmitted from the radio wave communication device 10 and received by the radio wave transmission / reception unit 100 via the antenna 101 to the ultrasonic transmission / reception unit 200 and transmits the ultrasonic transmission / reception unit 200. The state is switched, and the reception result of the radio wave transmission / reception unit 100 is converted into an ultrasonic signal by the ultrasonic transmission / reception unit 200 via the ultrasonic transducer 201 so as to be transmitted to the ultrasonic underwater communication device 20. The transmission / reception switching relay circuit unit 300 transmits the reception result transmitted from the ultrasonic underwater communication device 20 and received by the ultrasonic transmission / reception unit 200 via the ultrasonic transducer 201 to the wireless radio wave transmission / reception unit 100, and wirelessly. The radio wave transmission / reception unit 100 is switched to a transmission state, the reception result of the ultrasonic wave transmission / reception unit 200 is converted into a radio wave signal by the radio wave transmission / reception unit 100, and the radio wave communication device 10 or other wireless relay device 40 is wirelessly transmitted from the antenna 101. Transmission to the radio wave transmitting / receiving unit 100 is enabled.

  The radio wave transmission / reception unit 100 includes a reception circuit 110, a transmission circuit 120, and a transmission switching circuit 130.

  The reception circuit 110 is connected to the antenna 101 and amplifies the reception signal of the antenna 101. The filter circuit 112 is connected to the amplification circuit 111 and extracts only a necessary frequency. The reception circuit 110 is connected to the filter circuit 112 and outputs a high-frequency signal. A demodulating circuit 113 for converting a signal (low frequency signal); a filter circuit 114 connected to the demodulating circuit 113 for removing signals other than the audio frequency; and a speaker amplifier circuit 115 connected to the filter circuit 114 for amplifying the audio signal and driving the speaker. Have.

  The transmission circuit 120 is connected to a microphone amplifier circuit 121 that amplifies a microphone signal transmitted from the transmission / reception switching circuit unit 300, a filter circuit 122 that is connected to the microphone amplifier circuit 121 and extracts only a necessary audio frequency band, and a filter circuit 122. A modulation circuit 123 that converts an audio signal (low frequency signal) into a high frequency signal, a filter circuit 124 that is connected to the modulation circuit 123 and extracts only a necessary frequency, and is connected to the filter circuit 124 to amplify the high frequency signal and drive the antenna 101. A transmission amplifier circuit 125 is included.

  The radio wave transmission / reception unit 100 is in a reception state in which the reception circuit 110 is always on and the transmission circuit 120 is always off in a normal standby state. In addition, the radio wave transmission / reception unit 100 turns off the reception circuit 110 and turns on the transmission circuit 120 by the transmission / reception switching circuit 130 driven by the transmission / reception switching relay circuit unit 300 based on the reception result of the ultrasonic transmission / reception unit 200. Switch to transmission state.

  The ultrasonic transmission / reception unit 200 includes a reception circuit 210, a transmission circuit 220, and a transmission switching circuit 230.

  The receiving circuit 210 is connected to the ultrasonic transducer 201 and amplifies the reception result of the ultrasonic transducer 201. The receiving circuit 210 is connected to the amplifying circuit 211 and connected to the filter circuit 212 and the filter circuit 212. The demodulating circuit 213 that converts the high frequency signal into the audio signal (low frequency signal), the filter circuit 214 that is connected to the demodulating circuit 213 and removes other than the audio frequency, and the filter circuit 214 is connected to amplify the audio signal and drive the speaker. A speaker amplifier circuit 215.

  The transmission circuit 220 is connected to the microphone amplifier circuit 221 that amplifies the microphone signal transmitted from the transmission / reception switching relay circuit unit 300, the filter circuit 222 that is connected to the microphone amplifier circuit 221 and extracts only the necessary audio frequency band, and the filter circuit 222. A modulation circuit 223 for converting an audio signal (low frequency signal) into a high frequency signal, a filter circuit 224 connected to the modulation circuit 223 for extracting only a necessary frequency, and an ultrasonic transducer for amplifying the high frequency signal connected to the filter circuit 224 A transmission amplifier circuit 225 for driving 201 is included.

  In the normal standby state, the ultrasonic transmission / reception unit 200 is in a reception state in which the reception circuit 210 is always on and the transmission circuit 220 is always off. The ultrasonic transmission / reception unit 200 turns off the reception circuit 210 and turns on the transmission circuit 220 by the transmission / reception switching circuit 230 driven by the transmission / reception switching relay circuit unit 300 based on the reception result of the radio wave transmission / reception unit 100. Switch to transmission state.

  The transmission / reception switching relay circuit unit 300 includes an impedance conversion circuit 311 to which the speaker amplifier circuit 115 of the reception circuit 110 of the wireless radio wave transmission / reception unit 100 is connected, and uses an audible sound such as voice as a reception result of the radio wave transmission / reception unit 100. Then, the transmission switching circuit 230 of the ultrasonic transmission / reception unit 200 is driven so that the speaker amplifier circuit 115 of the reception circuit 110 of the radio wave transmission / reception unit 100 and the microphone amplifier circuit 221 of the transmission circuit 220 of the ultrasonic transmission / reception unit 200 can be connected. The impedance conversion circuit 311 matches the signal levels of the speaker amplifier circuit 115, the microphone amplifier circuit 221, and the air sound detection circuit 312. That is, the transmission / reception switching relay circuit unit 300 is connected to the impedance conversion circuit 311 to determine the presence / absence of an audio signal, the aerial audio detection circuit 312 is connected to the aerial audio detection circuit 312 and the aerial audio detection circuit 312 detects the audio, A time constant circuit 313 that outputs a signal that keeps the sound detection state for a while, and a transmission switch signal generation circuit 314 that is connected to the time constant circuit 313 and outputs a signal that drives the transmission switching circuit 230 of the ultrasonic transceiver 200. Accordingly, the transmission switch signal generation circuit 314 is driven based on the reception result (speaker amplifier circuit 115 to impedance conversion circuit 311) of the radio wave transmission / reception unit 100, and transmits the transmission switch circuit 230 of the ultrasonic transmission / reception unit 200 through the transmission switching circuit 230. The ultrasonic transmission / reception unit 200 is switched to the transmission state by turning on the circuit 220.

  The transmission / reception switching relay circuit unit 300 includes an impedance conversion circuit 321 to which the speaker amplifier circuit 215 of the reception circuit 210 of the ultrasonic transmission / reception unit 200 is connected, and uses an audible sound such as voice as a reception result of the ultrasonic transmission / reception unit 200. Then, the transmission switching circuit 130 of the radio wave transmission / reception unit 100 is driven so that the speaker amplifier circuit 215 of the reception circuit 210 of the ultrasonic wave transmission / reception unit 200 and the microphone amplifier circuit 121 of the transmission circuit 120 of the radio wave transmission / reception unit 100 can be connected. The impedance conversion circuit 321 matches the signal levels of the speaker amplifier circuit 215, the microphone amplifier circuit 121, and the underwater sound detection circuit 322. That is, the transmission / reception switching relay circuit unit 300 is connected to the impedance conversion circuit 321 to determine whether there is a specific audio signal, and is connected to the underwater audio detection circuit 322 and the underwater audio detection circuit 322 detects the audio. Thereafter, a time constant circuit 323 that outputs a signal that keeps the sound detection state for a while, and a transmission switch signal generation circuit 324 that is connected to the time constant circuit 323 and outputs a signal that drives the transmission switching circuit 130 of the radio wave transceiver 100. Have. Accordingly, the transmission switch signal generation circuit 324 is driven based on the reception result (speaker amplifier circuit 215 to impedance conversion circuit 321) of the ultrasonic transmission / reception unit 200, and transmits the transmission switch circuit 130 of the radio wave transmission / reception unit 100 through the transmission switching circuit 130. By turning on the circuit 120, the radio wave transceiver 100 is switched to the transmission state.

  Hereinafter, a communication procedure between the radio wave communication device 10 and the ultrasonic underwater communication device 20 using the wireless relay device 40 and a communication procedure between the remote ultrasonic underwater communication devices 20 will be described.

(A) Communication between the radio wave communication device 10 and the ultrasonic underwater communication device 20
(A-1) Start of communication between the radio wave communication device 10 and the ultrasonic underwater communication device 20, or during the communication, transmit from the radio wave communication device 10 to the wireless relay device 40 (radio wave transmission / reception unit 100, ultrasonic transmission / reception) Unit 200, transmission / reception switching relay circuit unit 300), and the procedure for transmitting from the wireless relay device 40 to the ultrasonic underwater communication device 20 is as follows.

  (1) The radio wave signal transmitted from the radio wave communication device 10 is received by the antenna 101 of the radio wave transmission / reception unit 100 of the radio relay device 40.

  (2) The reception signal of the antenna 101 is converted into an audible sound such as a sound by the reception circuit 110 of the radio wave transmission / reception unit 100 by the amplification circuit 111, the filter circuit 112, the demodulation circuit 113, the filter circuit 114, and the speaker amplifier circuit 115 described above. Then, it is transmitted to the impedance conversion circuit 311 of the transmission / reception switching relay circuit unit 300.

  (3) The impedance conversion circuit 311 of the transmission / reception switching relay circuit unit 300 drives the transmission switch signal generation circuit 314 using an audible sound such as voice, and performs the transmission switching circuit 230 of the ultrasonic transmission / reception unit 200 for transmission. The circuit 220 is turned on, and the ultrasonic transmission / reception unit 200 is switched to the transmission state. At the same time, the impedance conversion circuit 311 of the transmission / reception switching relay circuit unit 300 connects the speaker amplifier circuit 115 of the radio wave transmission / reception unit 110 and the microphone amplifier circuit 221 of the transmission circuit 220 of the ultrasonic transmission / reception unit 200 to transmit from the speaker amplifier circuit 111. The sound to be transmitted is sent to the microphone amplifier circuit 221 as a microphone signal.

  (4) The microphone signal transmitted to the microphone amplifier circuit 221 of the ultrasonic transmission / reception unit 200 is converted into a high-frequency signal by the filter circuit 222, the modulation circuit 223, the filter circuit 224, and the transmission amplifier circuit 225, and the ultrasonic transducer. 201 is driven.

  (5) The ultrasonic transducer 201 of the ultrasonic transmission / reception unit 200 converts a high-frequency signal into an ultrasonic signal and transmits the ultrasonic signal to the ultrasonic underwater communication device 20. Thereby, transmission from the radio wave communication device 10 to the ultrasonic underwater communication device 20 is performed.

  (A-2) Start of communication between the radio wave communication device 10 and the ultrasonic underwater communication device 20, or during the communication, the wireless relay device 40 (the radio wave transmission / reception unit 100, the ultrasonic wave) The procedure of receiving by the transmitting / receiving unit 200 and the transmission / reception switching relay circuit unit 300) and transmitting from the wireless relay device 40 to the wireless radio communication device 10 is as follows.

  (1) The ultrasonic signal transmitted from the ultrasonic underwater communication device 20 is received by the ultrasonic transducer 201 of the ultrasonic transmission / reception unit 200 of the wireless relay device 40.

  (2) The reception result of the ultrasonic transducer 201 is received by the reception circuit 210 of the ultrasonic transmission / reception unit 200, and can be voiced by the amplification circuit 211, filter circuit 212, demodulation circuit 213, filter circuit 214, and speaker amplifier circuit 215. It is converted into an audible sound and transmitted to the impedance conversion circuit 321 of the transmission / reception switching relay circuit unit 300.

  (3) The impedance conversion circuit 321 of the transmission / reception switching relay circuit unit 300 drives the transmission switch signal generation circuit 324 using an audible sound such as voice, and performs the transmission switching circuit 130 of the radio wave transmission / reception unit 100 for transmission. The circuit 120 is turned on, and the radio wave transmission / reception unit 100 is switched to the transmission state. At the same time, the impedance conversion circuit 321 of the transmission / reception switching relay circuit unit 300 connects the speaker amplifier circuit 215 of the reception circuit 210 of the ultrasonic transmission / reception unit 200 and the microphone amplifier circuit 121 of the transmission circuit 120 of the radio wave transmission / reception unit 100 to connect the speaker amplifier. The sound transmitted from the circuit 215 is transmitted to the microphone amplifier circuit 121 as a microphone signal.

  (4) The microphone signal transmitted to the microphone amplifier circuit 121 of the radio wave transmission / reception unit 100 is converted into a high-frequency signal by the filter circuit 122, the modulation circuit 123, the filter circuit 124, and the transmission amplifier circuit 125, and drives the antenna 101. To do.

  (5) The antenna 101 of the radio wave transmission / reception unit 100 converts a high frequency signal into a radio wave signal and transmits it to the radio wave communication device 10. Thereby, transmission from the ultrasonic underwater communication device 20 to the radio wave communication device 10 is performed.

  When the radio wave transmission / reception unit 100 of the radio relay device 40 receives the radio wave from the radio radio communication device 10 and the sound is output by the above (A-1) and (A-2), the ultrasonic wave of the radio relay device 40 is output. The transmission / reception unit 200 is set to the transmission state by the transmission / reception switching relay circuit unit 300, and the sound of the radio wave communication device 10 is transmitted to the ultrasonic underwater communication device 20. On the other hand, when the ultrasonic transmission / reception unit 200 of the wireless relay device 40 receives the ultrasonic waves from the ultrasonic underwater communication device 20, the wireless radio wave transmission / reception unit 100 of the wireless relay device 40 is set in the transmission state, and the ultrasonic underwater communication device 20 Audio is transmitted to the radio wave communication device 10. Accordingly, the radio relay device 40 can communicate the radio wave communication device 10 and the ultrasonic underwater communication device 20 in a simplex manner.

(B) Communication between remote ultrasonic underwater communication devices 20 (20A and 20B)
(B-1) Commencement of communication between the ultrasonic underwater communication device 20A and the ultrasonic underwater communication device 20B, or during the communication, transmission from the ultrasonic underwater communication device 20A is performed by the wireless relay device 40A (radio wave transmission / reception unit) of the buoy 31 100, the ultrasonic transmission / reception unit 200, the transmission / reception switching relay circuit unit 300), and the ultrasonic wave via the wireless relay device 40B of the other buoy 32 (the radio wave transmission / reception unit 100, the ultrasonic transmission / reception unit 200, the transmission / reception switching relay circuit unit 300). The procedure for transmitting to the underwater communication device 20B is as follows.

  (1) The ultrasonic signal transmitted from the ultrasonic underwater communication device 20A is received by the ultrasonic transducer 201 of the ultrasonic transmission / reception unit 200 of the wireless relay device 40A.

  (2) In the wireless relay device 40A, the reception result of the ultrasonic transducer 201 is received by the reception circuit 210 of the ultrasonic transmission / reception unit 200, and the amplification circuit 211, filter circuit 212, demodulation circuit 213, filter circuit 214, speaker amplifier described above. The circuit 215 converts the sound into an audible sound such as a sound and transmits it to the impedance conversion circuit 321 of the transmission / reception switching relay circuit unit 300.

  (3) In the wireless relay device 40A, the impedance conversion circuit 321 of the transmission / reception switching relay circuit unit 300 drives the transmission switch signal generation circuit 324 using an audible sound such as voice to transmit the transmission switching circuit of the radio wave transmission / reception unit 100. 130, the transmission circuit 120 is turned on, and the radio wave transmission / reception unit 100 is switched to the transmission state. At the same time, the impedance conversion circuit 321 of the transmission / reception switching relay circuit unit 300 connects the speaker amplifier circuit 215 of the reception circuit 210 of the ultrasonic transmission / reception unit 200 and the microphone amplifier circuit 121 of the transmission circuit 120 of the radio wave transmission / reception unit 100 to each other. The sound transmitted from the amplifier circuit 215 is transmitted to the microphone amplifier circuit 121 as a microphone signal.

  (4) In the wireless relay device 40A, the microphone signal transmitted to the microphone amplifier circuit 121 of the radio wave transmission / reception unit 100 is converted into a high-frequency signal by the filter circuit 122, the modulation circuit 123, the filter circuit 124, and the transmission amplifier circuit 125 described above. Then, the antenna 101 is driven.

  (5) In the radio relay device 40A, the antenna 101 of the radio wave transmission / reception unit 100 converts the high frequency signal into a radio wave signal and transmits the radio wave signal to the radio relay device 40B.

  (6) The radio wave signal transmitted from the radio relay device 40A is received by the antenna 101 of the radio wave transmission / reception unit 100 of the radio relay device 40B.

  (7) In the wireless relay device 40B, the reception signal of the antenna 101 is received by the reception circuit 110 of the wireless radio wave transmission / reception unit 100, by the amplification circuit 111, the filter circuit 112, the demodulation circuit 113, the filter circuit 114, and the speaker amplifier circuit 115 described above. It is converted into an audible sound such as voice and transmitted to the impedance conversion circuit 311 of the transmission / reception switching relay circuit unit 300.

  (8) In the wireless relay device 40B, the impedance conversion circuit 311 of the transmission / reception switching relay circuit unit 300 drives the transmission switch signal generation circuit 314 using an audible sound such as voice, and the transmission switching circuit of the ultrasonic transmission / reception unit 200. 230, the transmission circuit 220 is turned on, and the ultrasonic transmission / reception unit 200 is switched to the transmission state. At the same time, the impedance conversion circuit 311 of the transmission / reception switching relay circuit unit 300 connects the speaker amplifier circuit 115 of the radio wave transmission / reception unit 110 and the microphone amplifier circuit 221 of the transmission circuit 220 of the ultrasonic transmission / reception unit 200 to transmit from the speaker amplifier circuit 111. The sound to be transmitted is sent to the microphone amplifier circuit 221 as a microphone signal.

  (9) In the wireless relay device 40B, the microphone signal transmitted to the microphone amplifier circuit 221 of the ultrasonic transmission / reception unit 200 is converted into a high-frequency signal by the filter circuit 222, the modulation circuit 223, the filter circuit 224, and the transmission amplifier circuit 225 described above. Then, the ultrasonic transducer 201 is driven.

  (10) In the wireless relay device 40B, the ultrasonic transducer 201 of the ultrasonic transmission / reception unit 200 converts a high-frequency signal into an ultrasonic signal and transmits the ultrasonic signal to the ultrasonic underwater communication device 20B. Thereby, transmission from the ultrasonic underwater communication device 20A to the ultrasonic underwater communication device 20B is performed.

  (B-2) Commencement of communication between the ultrasonic underwater communication device 20A and the ultrasonic underwater communication device 20B, or transmission from the ultrasonic underwater communication device 20B during the communication. 100, the ultrasonic transmission / reception unit 200, the transmission / reception switching relay circuit unit 300), and the ultrasonic wave via the wireless relay device 40A of the other buoy 31 (the radio wave transmission / reception unit 100, the ultrasonic transmission / reception unit 200, the transmission / reception switching relay circuit unit 300). The procedure for transmitting to the underwater communication device 20A is as follows.

  (1) The ultrasonic signal transmitted from the ultrasonic underwater communication device 20B is received by the ultrasonic transducer 201 of the ultrasonic transmission / reception unit 200 of the wireless relay device 40B.

  (2) In the wireless relay device 40B, the reception result of the ultrasonic transducer 201 is received by the reception circuit 210 of the ultrasonic transmission / reception unit 200, and the amplification circuit 211, filter circuit 212, demodulation circuit 213, filter circuit 214, speaker amplifier described above. The circuit 215 converts the sound into an audible sound such as a sound and transmits it to the impedance conversion circuit 321 of the transmission / reception switching relay circuit unit 300.

  (3) In the radio relay device 40B, the impedance conversion circuit 321 of the transmission / reception switching relay circuit unit 300 drives the transmission switch signal generation circuit 324 using an audible sound such as voice, and the transmission switching circuit of the radio wave transmission / reception unit 100 130, the transmission circuit 120 is turned on, and the radio wave transmission / reception unit 100 is switched to the transmission state. At the same time, the impedance conversion circuit 321 of the transmission / reception switching relay circuit unit 300 connects the speaker amplifier circuit 215 of the reception circuit 210 of the ultrasonic transmission / reception unit 200 and the microphone amplifier circuit 121 of the transmission circuit 120 of the radio wave transmission / reception unit 100 to each other. The sound transmitted from the amplifier circuit 215 is transmitted to the microphone amplifier circuit 121 as a microphone signal.

  (4) In the wireless relay device 40B, the microphone signal transmitted to the microphone amplifier circuit 121 of the radio wave transmission / reception unit 100 is converted into a high-frequency signal by the filter circuit 122, the modulation circuit 123, the filter circuit 124, and the transmission amplifier circuit 125 described above. Then, the antenna 101 is driven.

  (5) In the radio relay device 40B, the antenna 101 of the radio wave transmission / reception unit 100 converts a high frequency signal into a radio wave signal and transmits it to the radio relay device 40A.

  (6) The radio wave signal transmitted from the radio relay device 40B is received by the antenna 101 of the radio wave transmission / reception unit 100 of the radio relay device 40A.

  (7) In the radio relay device 40A, the reception signal of the antenna 101 is received by the reception circuit 110 of the radio wave transmission / reception unit 100, by the amplification circuit 111, the filter circuit 112, the demodulation circuit 113, the filter circuit 114, and the speaker amplifier circuit 115 described above. It is converted into an audible sound such as voice and transmitted to the impedance conversion circuit 311 of the transmission / reception switching relay circuit unit 300.

  (8) In the radio relay device 40A, the impedance conversion circuit 311 of the transmission / reception switching relay circuit unit 300 drives the transmission switch signal generation circuit 314 using an audible sound such as voice, and the transmission switching circuit of the ultrasonic transmission / reception unit 200. 230, the transmission circuit 220 is turned on, and the ultrasonic transmission / reception unit 200 is switched to the transmission state. At the same time, the impedance conversion circuit 311 of the transmission / reception switching relay circuit unit 300 connects the speaker amplifier circuit 115 of the radio wave transmission / reception unit 110 and the microphone amplifier circuit 221 of the transmission circuit 220 of the ultrasonic transmission / reception unit 200 to transmit from the speaker amplifier circuit 111. The sound to be transmitted is sent to the microphone amplifier circuit 221 as a microphone signal.

  (9) In the wireless relay device 40A, the microphone signal transmitted to the microphone amplifier circuit 221 of the ultrasonic transmission / reception unit 200 is converted into a high-frequency signal by the filter circuit 222, the modulation circuit 223, the filter circuit 224, and the transmission amplifier circuit 225 described above. Then, the ultrasonic transducer 201 is driven.

  (10) In the radio relay device 40A, the ultrasonic transducer 201 of the ultrasonic transmission / reception unit 200 converts a high-frequency signal into an ultrasonic signal and transmits the ultrasonic signal to the ultrasonic underwater communication device 20A. Thereby, transmission from the ultrasonic underwater communication device 20B to the ultrasonic underwater communication device 20A is performed.

  According to the above (B-1) and (B-2), communication can be performed between the ultrasonic underwater communication device 20A and the ultrasonic underwater communication device 20B.

According to the present embodiment, the following operational effects can be obtained.
(a) By interposing the radio relay device 40 between the radio wave communication device 10 and the ultrasonic underwater communication device 20 and relaying the radio wave communication device 10 and the ultrasonic underwater communication device 20 by the radio relay device 40, Communication is possible between the radio wave communication device 10 and the ultrasonic underwater communication device 20, and a communication range of a diver using the ultrasonic underwater communication device 20 can be widened.

  (b) By interposing the wireless relay devices 40A and 40B between the ultrasonic underwater communication devices 20A and 20B located remotely, and relaying the ultrasonic underwater communication devices 20A and 20B to each other by the wireless relay devices 40A and 40B. The ultrasonic underwater communication devices 20A and 20B can communicate with each other, and the communication range of the diver using the ultrasonic underwater communication devices 20A and 20B can be widened.

  (c) In the wireless relay device 40, the radio wave transmission / reception unit 100 includes the reception circuit 110, the transmission circuit 120, and the transmission switching circuit 130, and the ultrasonic transmission / reception unit 200 includes the reception circuit 210 and the transmission circuit. 220 and a transmission switching circuit 230, and the transmission / reception switching relay circuit unit 300 is driven based on the reception result of the radio wave transmission / reception unit 100, and the transmission switching circuit 230 of the ultrasonic transmission / reception unit 200 is used as the transmission circuit 220. The transmission switch signal generation circuit 314 that switches the ultrasonic transmission / reception unit 200 to the transmission state by turning on the signal, and the transmission switching circuit 130 of the radio wave transmission / reception unit 100 are driven based on the reception result of the ultrasonic transmission / reception unit 200. A transmission switch signal generation circuit 3 that switches the radio wave transmission / reception unit 100 to a transmission state by turning on the transmission circuit 120. And a 4. Accordingly, the wireless relay device 40 has a simple configuration for each of the radio wave transmission / reception unit 100, the ultrasonic transmission / reception unit 200, and the transmission / reception switching relay circuit unit 300, and relays the radio wave communication device 10 and the ultrasonic underwater communication device 20. Alternatively, the remote ultrasonic underwater communication devices 20A and 20B can be relayed.

  (d) In the wireless relay device 40, the transmission / reception switching relay circuit unit 300 drives the transmission switching circuit 230 of the ultrasonic transmission / reception unit 200 using an audible sound that is a reception result of the wireless radio wave transmission / reception unit 100; The speaker amplifier circuit 115 of the radio wave transmission / reception unit 100 can be connected to the microphone amplifier circuit 221 of the ultrasonic wave transmission / reception unit 200, and transmission of the radio wave transmission / reception unit 100 is performed using an audible sound as a reception result of the ultrasonic wave transmission / reception unit 200. The switching circuit 130 is driven so that the speaker amplifier circuit 215 of the ultrasonic transmission / reception unit 200 and the microphone amplifier circuit 121 of the radio wave transmission / reception unit 100 can be connected. Thereby, the ultrasonic transmission / reception unit 200 is switched to the transmission state by using the audible sound such as the voice as the reception result of the radio wave transmission / reception unit 100, and the audible sound such as the voice as the reception result of the ultrasonic transmission / reception unit 200 is used. The radio wave transmission / reception unit 100 can be switched to the transmission state.

  (e) By installing the wireless relay device 40 on the buoy 31, it is possible to relay the radio wave communication device 10 on board, in the air, on land, etc. and the ultrasonic underwater communication device 20 of the diver. Also, by installing the radio relay devices 40A and 40B on each of the plurality of buoys 31 and 32, the ultrasonic underwater communication devices 20A and 20B of the diver located at a distance or place where the ultrasonic underwater communication devices 20A and 20B cannot reach. Can be relayed.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and even if there is a design change or the like without departing from the gist of the present invention. It is included in the present invention. For example, the radio wave transmitter / receiver 100 of the radio wave communication device 10 and the radio relay device 40 is generally a commercially available specific power-saving transceiver that does not require a license, but if it is permitted in the region, country, etc. to be used. Anything can be used according to the usage environment. If compatible, the radio wave transmitter / receiver 100 of the radio wave communication device 10 and the radio relay device 40 may be different models.

  Since the present invention has versatility in the radio wave transmission / reception unit as described above, the present invention can be applied inexpensively and economically as a communication means associated with underwater work such as water rescue and underwater work. Since wide-area communication with divers is possible, it can be expected to greatly contribute to the safety of divers.

FIG. 1 is a schematic diagram showing a wireless communication system. FIG. 2 is a schematic diagram showing a use state of the wireless communication system. FIG. 3 is a block diagram showing the wireless relay device. FIG. 4 is a schematic diagram showing a conventional example. FIG. 5 is a schematic view showing another conventional example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Radio transmission system 10 Radio wave communication apparatus 20, 20A, 20B Ultrasonic underwater communication apparatus 31, 32 Buoy 40, 40A, 40B Radio relay apparatus 100 Radio wave transmission / reception part 101 Antenna 110 Reception circuit 111 Amplification circuit 112 Filter circuit 113 Demodulation circuit 114 filter circuit 115 speaker amplifier circuit 120 transmission circuit 121 microphone amplifier circuit 122 filter circuit 123 modulation circuit 124 filter circuit 125 transmission amplifier circuit 130 transmission switching circuit 200 ultrasonic transmission / reception unit 201 ultrasonic transducer 210 reception circuit 211 amplification circuit 212 filter circuit 213 Demodulator circuit 214 Filter circuit 215 Speaker amplifier circuit 220 Transmitter circuit 221 Microphone amplifier circuit 222 Filter circuit 223 Modulator circuit 224 Filter circuit 225 Transmit amplifier circuit 230 Transmission switching circuit 300 transceiver circuit relay circuit 311 impedance conversion circuit 312 aerial voice detection circuit 313 time-constant circuit 314 sends a switch signal generating circuit 321 impedance conversion circuit 322 water voice detection circuit 323 time-constant circuit 324 sends a switch signal generating circuit

Claims (3)

It is a wireless relay device that relays radio wave communication devices and ultrasonic underwater communication devices, or relays remote ultrasonic underwater communication devices,
A radio wave transmission / reception unit for transmitting / receiving radio wave signals to / from a radio wave communication device;
An ultrasonic transmission / reception unit that transmits / receives ultrasonic signals to / from the ultrasonic underwater communication device;
The reception result transmitted from the wireless communication device and received by the wireless transmission / reception unit is transmitted to the ultrasonic transmission / reception unit, the ultrasonic transmission / reception unit is switched to the transmission state, and the reception result of the wireless transmission / reception unit is transmitted by the ultrasonic transmission / reception unit. The sound wave signal can be converted and transmitted, and the reception result transmitted from the ultrasonic underwater communication device and received by the ultrasonic wave transmission / reception unit is transmitted to the radio wave transmission / reception unit, and the radio wave transmission / reception unit is switched to the transmission state. A radio relay apparatus having a transmission / reception switching relay circuit unit that converts a reception result of a sound wave transmission / reception unit into a radio wave signal by a radio wave transmission / reception unit and enables transmission
The radio wave transmission / reception unit includes a reception circuit, a transmission circuit, and a transmission switching circuit,
The ultrasonic transmission / reception unit has a reception circuit, a transmission circuit, and a transmission switching circuit,
The transmission / reception switching relay circuit is
Transmission switch signal that is driven by using the audible sound that is the reception result of the radio wave transmitter / receiver immediately as it is, switches the transmission / reception circuit of the ultrasonic transmitter / receiver to the transmission state by turning on the transmission circuit of the ultrasonic transmitter / receiver A generation circuit;
After detecting a specific audio signal , the audible sound that is the reception result of the ultrasonic transmission / reception unit is immediately driven as it is, and the radio wave transmission / reception unit is turned on by switching the transmission circuit of the radio wave transmission / reception unit and turning on the transmission circuit A transmission switch signal generation circuit for switching the transmission state to the transmission state, and
The transmission / reception switching relay circuit unit is
Immediately using the audible sound that is the reception result of the radio wave transmitter / receiver as it is, the transmission switching circuit of the ultrasonic wave transmitter / receiver is driven to connect the speaker amplifier circuit of the radio wave transmitter / receiver and the microphone amplifier circuit of the ultrasonic transmitter / receiver. With
After detecting the specific audio signal , the audible sound that is the reception result of the ultrasonic transmission / reception unit is immediately used as it is to drive the transmission switching circuit of the radio wave transmission / reception unit, and the speaker amplifier circuit and the radio wave transmission / reception unit of the ultrasonic transmission / reception unit Wireless relay device that enables connection of microphone amplifier circuits.   The wireless relay device according to claim 1, wherein the wireless relay device is installed in a buoy or the like.   By using a radio wave communication device, an ultrasonic underwater communication device, and the wireless relay device according to claim 1 or 2, a plurality of ultrasonic waves between the radio wave communication device and the ultrasonic underwater communication device or remotely A wireless communication system that enables communication between sonic underwater communication devices.

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