JP2008107225A - Tsunami detection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cost-reducible tsunami detection device almost dispensing with maintenance, capable of detecting approximately in real time, a tsunami generated offshore in the long distance. <P>SOLUTION: This device includes a tsunami generation information communication part 14 for detecting tsunami generation, and transmitting information on the tsunami generation; a sea bottom holding part 15 for holding the tsunami generation information communication part 14 on the sea bottom; and a connection part 16 for connecting detachably the tsunami generation information communication part 14 to the sea bottom holding part 15, and releasing the connection when detecting the tsunami generation. The tsunami generation information communication part 14 is equipped with a tsunami generation detection means 11 for detecting generation of a tsunami, a storage means 12 for storing information on generation of the tsunami detected by the tsunami generation detection means 11, and a transmission means 13 for transmitting information on generation of the tsunami stored in the storage means 12 when floating on the sea surface. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a tsunami detection device.

  Conventionally, self-levitation type, uncard buoy type, and cable type are known as tsunami detection devices. The self-levitating tsunami detection device encloses a seismometer or data recorder in a capsule, sinks it to the seabed, observes the tsunami for a certain period of time, then levitates and collects it to obtain observation data.

  This self-floating tsunami detector is easy to install and can be used repeatedly. In addition, it can be installed in a specific area and has a small turn, so it is often used for research purposes.

  An uncard buoy-type tsunami detector is connected to a seismometer installed on the seabed and a buoy on the sea surface. Then, the observation data of the seismometer is transmitted by radio waves from a transmitter provided on the buoy and transmitted to the ground station via a communication satellite. This uncard buoy tsunami detector can obtain observation data in real time.

  The cable-type tsunami detection device connects a plurality of seismometers with optical cables, and lays from 100 km to 200 km offshore from the ground station provided on the coast to the boundary of the bedrock plate. This cable-type tsunami detection device can monitor the movement of the plate over a long period of time in real time for 24 hours.

In addition to the above, a tsunami detection system that measures the displacement of offshore offshore buoys using GPS (Global Positioning System) is known.
JP 2006-170920 A JP 2001-264056 A JP-A-11-281759 JP-A-11-281758 JP-A-10-122860 Japanese Patent Application Laid-Open No. 11-63984

  However, the conventional self-levitation type tsunami detection device has a problem that it is not suitable for disaster prevention because it cannot obtain observation data relating to the occurrence of the tsunami in real time.

  In addition, since the uncard buoy tsunami detection device constantly transmits observation data relating to the occurrence of a tsunami, power consumption increases. For this reason, there has been a problem that frequent maintenance such as battery replacement is required.

  In addition, the cable-type tsunami detection device has a problem that an optical cable has to be laid for a long distance, so that the construction becomes large and the cost increases.

Furthermore, the tsunami detection system that measures the displacement of offshore offshore buoys using GPS uses the RTK (Real Time Kinematic) method as the observation algorithm, so the limit distance for error correction by land base stations is about 10 km. There was a problem that offshore tsunami observation at the above distance was impossible.

  The present invention has been made in view of such problems, and it is an object of the present invention to provide a tsunami detection device that can detect tsunami generated offshore at a long distance in substantially real time, and that can reduce the cost with almost no maintenance. .

The present invention employs the following means in order to solve the above problems.
That is, the present invention
A tsunami occurrence information communication unit that detects tsunami occurrence and transmits information about the tsunami occurrence;
A seabed holding section for holding the tsunami generation information communication section on the seabed;
Removably connecting the tsunami generation information communication unit and the seafloor holding unit, and including a connection unit that is disconnected when a tsunami generation is detected,
The tsunami occurrence information communication unit is a tsunami occurrence detection means for detecting the occurrence of the tsunami, a storage means for storing information relating to the occurrence of the tsunami detected by the tsunami occurrence detection means, and Transmitting means for transmitting information relating to the occurrence of the tsunami stored in the storage means, tsunami occurrence detecting means, power supply means for supplying power to the storage means and the transmitting means,
It is characterized by providing.

  The tsunami detection device of the present invention is installed on the seabed. When a tsunami occurs, the tsunami occurrence information communication unit emerges on the sea surface, and information related to the occurrence of the tsunami stored in the storage means is transmitted by the transmission means.

  In the present invention, the occurrence of a tsunami can be detected and transmitted in substantially real time. Therefore, it can be effectively used for disaster prevention.

  In addition, since it is not necessary to connect the tsunami detection device and the base station on land with a cable, it can be easily installed at a low cost offshore from the coast.

  Furthermore, the tsunami occurrence information communication unit transmits information related to the occurrence of a tsunami only when it is detected that a tsunami has occurred. When no tsunami has occurred, the power consumption is very low. Therefore, the capacity of the power supply means can be reduced, and maintenance such as replacement of the power supply means becomes almost unnecessary.

  Here, it can be configured to include vibration detection means for detecting the vibration of the seabed ground. With this configuration, since the occurrence of a tsunami can be detected in association with the occurrence of an earthquake, even when the sea level displacement increases due to a typhoon or the like, the difference from the tsunami can be distinguished.

  Further, a GPS transmitter can be used as the transmission means.

  Moreover, the said connection part can be set as the structure which has the permanent magnet provided in one of the said tsunami generation information communication part or the said seabed holding | maintenance part, and the electromagnet provided in the other.

  The connecting portion includes a locking portion provided on one of the tsunami occurrence information communication portion or the seabed holding portion, a locking piece provided on the other side and locked to the locking portion, and the locking And an actuator for driving the piece to lock or release the locking portion.

  Moreover, the said tsunami generation information communication part can be comprised with an ultrasonic transmission / reception means.

In addition, an ultrasonic reference signal transmitted from the outside is received by the ultrasonic transmission / reception means,
By transmitting the feedback signal, it is possible to diagnose whether each means of the tsunami occurrence information communication unit is operating normally.

Also, having a plurality of the tsunami occurrence information communication unit,
Each time the occurrence of the tsunami is detected, the tsunami occurrence information communication unit can rise one by one.

  With this configuration, multiple occurrences of tsunami can be detected. In addition, tsunami generated by aftershocks can be detected.

In addition, the power supply means includes a first power supply means provided in the tsunami occurrence information communication unit, and a second power supply means provided in the seabed holding unit,
The first power supply means and the second power supply means may be connected by a waterproof connector.

  With this configuration, when a tsunami does not occur, power can be supplied using the second power supply means, and when a tsunami occurs, the first power supply means can be used. Thereby, the tsunami generation information communication part which has a 1st power supply means can be reduced in size.

  The waterproof connector includes a protruding fixed terminal provided on one of the tsunami generation information communication unit or the seabed holding unit, and is provided on the other side so as to be slidable on the fixed terminal side and elastic on the fixed terminal side. And a sealing member that is sandwiched between the fixed terminal and the movable terminal and sandwiched between the tsunami generation information communication unit and the seabed holding unit.

  Further, the tsunami generation detecting means can be configured to have sea level displacement detecting means for detecting sea level displacement.

  Further, the sea level displacement detecting means may have a water pressure gauge. With this configuration, the configuration of the sea level displacement detection means can be simplified.

  According to the present invention, since the entire tsunami detection device is installed on the seabed, it does not give support to the operation of the ship.

  In addition, when the occurrence of a tsunami is detected, the tsunami occurrence information communication unit ascends to the sea surface and transmits the tsunami occurrence information, so that the occurrence of the tsunami can be acquired in substantially real time.

  Also, when waiting on the seabed, little information is transmitted, so power consumption is very low. Accordingly, maintenance such as replacement of the power supply means is almost unnecessary, and the cost can be reduced.

  Furthermore, since it is not necessary to connect the tsunami detection device and the ground base station with a cable, the installation is easy and the cost can be reduced.

  Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. In addition, the following embodiment is an illustration and this invention is not limited to the structure of embodiment.

<First embodiment>
FIG. 1 shows a functional block diagram of a tsunami detection device 1 according to the first embodiment of the present invention. This tsunami detection device 1 detects a tsunami occurrence and transmits a tsunami occurrence information communication unit 14 that transmits information related to the tsunami occurrence, a seabed holding unit 15 that holds the tsunami occurrence information communication unit 14 on the seabed 40, and a tsunami occurrence The information communication unit 14 and the seafloor holding unit 15 are detachably coupled, and a coupling unit 16 that is decoupled when the occurrence of a tsunami or the vibration of the seabed ground is detected is provided.

  The tsunami generation information communication unit 14 includes a tsunami generation detection unit 11 that detects the occurrence of a tsunami, a vibration detection unit 20 that detects vibration of the seabed ground, a tsunami generation detection unit 11, and the vibration detection unit 20 and the tsunami generation detection unit 11. The storage unit 12 stores information related to at least one of the detection results, and the transmission unit 13 transmits the information stored in the storage unit 12.

  In addition, the tsunami occurrence information communication unit 14 includes the levitation means 17 that causes the tsunami occurrence information communication unit 14 to rise to the sea surface 41 when the connection unit 16 is released, and the tsunami occurrence information communication unit 14 rises to the sea surface 41. Control means 18 for transmitting the information stored in the storage means 12 to the transmission means 13, the power supply means 19 for supplying power to each of the above means, the information in the storage means 12, and the vibration detection means 20 or the control means 22 which cancels | releases the connection part 16 with the information from the tsunami generation | occurrence | production detection means 11 is provided.

  FIG. 2 shows a specific configuration example of the tsunami detection apparatus 1. In this embodiment, the tsunami generation detection means 11 in the tsunami generation information communication unit 14 includes a water pressure gauge 21 and a first CPU 22 as a control means.

  The water pressure at the installation point (reference point) of the tsunami detection device 1 is measured by the water pressure gauge 21. Thereby, the distance between the reference point and the sea surface 41 is calculated, and the displacement of the sea surface 41 is measured. If the sea level displacement exceeds the first threshold value (predetermined value), it is determined whether or not a tsunami has occurred with reference to the detection result of the vibration detection means 20 described later.

  The storage means 12 can use an EEPROM (Electrically Erasable Programmable ROM). Various other memories can be used for the storage means 12.

The transmission means 13 can use a GPS (Global Positioning System) transmitter. This G
The PS transmitter transmits position information of the tsunami detection device 1 and various information. Note that various transmitters other than the GPS transmitter can be used for the transmission means 13.

  The control means 18 can use a second CPU. The seabed holding part 15 has a weight 23. The weight 23 has a weight capable of sinking the entire tsunami detection device 1 on the seabed.

  As shown in FIG. 3, the connecting portion 16 includes a permanent magnet 24 provided on the seabed holding portion 15 side and an electromagnet 25 provided on the tsunami generation information communication portion 14 side.

  In the connecting portion 16, the electromagnet 25 and the permanent magnet 24 are in close contact when the electromagnet 25 is OFF. Thereby, the tsunami generation information communication part 14 and the seabed holding part 15 are connected.

  Further, when the electromagnet 25 is ON, a magnetic force having a polarity opposite to that of the permanent magnet 24 is generated in the electromagnet 25, and the electromagnet 25 and the permanent magnet 24 repel each other. As a result, the connection between the tsunami occurrence information communication unit 14 and the seabed holding unit 15 is released.

  The electromagnet 25 is controlled to be turned on and off based on the detection result of the tsunami generation detection unit 11 and the detection result of the vibration detection unit 20 described later.

  In the present embodiment, it is determined that a tsunami has occurred when the detection result of the water pressure gauge 21 in the tsunami generation detection means 11 is equal to or greater than the first threshold value and the detection result of the vibration detection means 20 is equal to or greater than the second threshold value. The electromagnet 25 is turned on and the connection of the connecting portion 16 is released. As a result, the tsunami occurrence information communication unit 14 emerges. In other cases, the electromagnet 25 is turned off, and the tsunami generation information communication unit 14 is held on the seabed.

  In addition, the connection part 16 can also provide the permanent magnet 24 in the tsunami generation information communication part 14 side, and can also provide the electromagnet 25 in the seabed holding | maintenance part 15 side.

  2 can use a sealed air chamber. The air chamber is sealed with an amount of air that allows the entire tsunami occurrence information communication unit 14 to float on the sea surface 41.

  The control means 18 can use the second CPU as described above. The information stored in the storage unit 12 is transmitted from the transmission unit 13 at a predetermined timing under the control of the control unit 18.

  The power supply means 19 includes an auxiliary battery 26 and a power supply circuit 27 for supplying power to each component that requires power from the auxiliary battery 26.

  Further, a main battery 28 is provided on the seabed holding unit 15 side. The main battery 28 and the auxiliary battery 26 are connected via a waterproof connector 29 provided at a boundary portion between the tsunami generation information communication unit 14 and the seabed holding unit 15.

  As shown in FIG. 4, the waterproof connector 29 has a pair of fixed terminals 51 provided on the seabed holding unit 15 side and a pair of movable terminals 52 provided on the tsunami generation information communication unit 14 side. . FIG. 4 shows a state where the tsunami occurrence information communication unit 14 and the seabed holding unit 15 are separated.

  The fixed terminal 51 and the movable terminal 52 are connected to the main battery 28 and the auxiliary battery 26, respectively.

  The fixed terminal 51 protrudes outward from the surface 15 a facing the tsunami generation information communication unit 14 in the seafloor holding unit 15. The movable terminal 52 has a columnar terminal body 52a and a head portion 52b provided at one end of the terminal body 52a. The movable terminal 52 is disposed in a cylindrical case 55 so as to be movable up and down.

  In addition, the movable terminal 52 is urged in a direction protruding toward the outside of the tsunami generation information communication unit 14 by a spring 53 disposed between the head 52b and the case 55.

  Around the pair of movable terminals 52, a sealing member 54 provided on the surface 14 a facing the seabed holding unit 15 in the tsunami occurrence information communication unit 14 is disposed so as to surround the pair of movable terminals 52. An O-ring or the like can be used as the sealing member 54.

  In addition, the waterproof connector 29 can also provide the fixed terminal 51 in the tsunami generation information communication part 14 side, and can provide the movable terminal 52 in the seabed holding | maintenance part 15 side.

  When the tsunami generation information communication unit 14 and the seabed holding unit 15 are connected, the movable terminal 52 of the tsunami generation information communication unit 14 contacts the fixed terminal 51 of the seabed holding unit 15 as shown in FIG. The movable terminal 52 is pressed against the fixed terminal 51 by the urging force of the spring 53. Thereby, the movable terminal 52 and the fixed terminal 51 are reliably connected.

  Further, when the tsunami occurrence information communication unit 14 and the seabed holding unit 15 are connected, the sealing member 54 surrounding the movable terminal 52 is sandwiched between the tsunami occurrence information communication unit 14 and the seabed holding unit 15. And crushed with a predetermined force.

  As a result, the gap 55 between the tsunami generation information communication unit 14 and the seafloor holding unit 15 around the waterproof connector 29 is sealed, and seawater enters the waterproof connector 29, tsunami generation information communication unit 14, and the seabed holding unit 15. Intrusion can be prevented.

  The tsunami generation information communication unit 14 is further provided with vibration detection means 20, a thermometer 30 for measuring the water temperature of the seabed, and ultrasonic transmission / reception means 31.

  The vibration detection means 20 and the thermometer 30 are connected to the first CPU 22. The ultrasonic transmission / reception means 31 is connected to the control means 18.

  Further, the vibration detecting means 20 can use an acceleration sensor. This acceleration sensor detects accelerations in the X, Y, and Z directions orthogonal to each other. Based on these accelerations, the first CPU 22 detects the vibration of the seabed ground.

  Next, the operation of the tsunami detection device 1 will be described. As shown in FIG. 6, the tsunami detection device 1 is installed on the offshore seabed 40 that is a predetermined distance away from the coast 58 (see FIG. 7).

  When the tsunami detection device 1 is submerged in the seabed, as shown by the broken lines in FIG. 6, the submarine holding unit 15 is set on the lower side and the tsunami generation information communication unit 14 is set on the upper side due to the weight of each part. To do. Therefore, the tsunami detection device 1 can be installed in a normal posture even when the seabed 40 is uneven.

  With the tsunami detection device 1 installed on the seabed 40, the tsunami generation detection means 11 of the tsunami generation information communication unit 14 detects sea level displacement of the sea surface 41 constantly or periodically. Further, the vibration detection means 20 detects the vibration of the seabed 40 in conjunction with the tsunami generation detection means 11.

  When the sea level displacement detected by the tsunami generation detection means 11 is less than the first threshold value and the vibration of the seabed ground detected by the vibration detection means 20 is less than the second threshold value, it is determined that no tsunami has occurred. The In this case, the tsunami occurrence information communication unit 14 is held in a state of being connected to the seabed holding unit 15.

  Further, when the sea level displacement detected by the sea level displacement detection means 11 is equal to or greater than the first threshold and the seabed ground vibration detected by the vibration detection means 20 is equal to or greater than the second threshold, it is determined that a tsunami has occurred. . The detection results of the tsunami generation detection means 11 and the vibration detection means 20 are stored in the storage means 12.

  Note that the vibration detection means 20 can be omitted. In this case, it is determined that a tsunami has occurred when the detection result of the tsunami generation detection unit 11 is equal to or greater than the first threshold.

  Further, when the tsunami occurrence information communication unit 14 of the tsunami detection device 1 is connected to the seabed holding unit 15 and installed on the seabed 40, information stored in the storage means 12 (sea surface displacement, seabed ground vibration, seawater Temperature, etc.) is transmitted from the ultrasonic transmission / reception means 31. This information is received by the ship 56 arranged around the tsunami detection device 1.

Thereby, even when the tsunami occurrence information communication part 14 of the tsunami detection apparatus 1 is sinking in the seabed 40, various information including sea surface displacement, vibration of the seabed ground, and the like can be acquired.

  Further, a reference signal (CAL signal: calibration signal) S1 is periodically transmitted from the ship 56 to the tsunami detection device 1, and the reference signal S 1 is received by the ultrasonic transmission / reception means 31.

  Then, the feedback signal S2 of the reference signal S1 is transmitted from the ultrasonic transmission / reception means 31 to the ship 56, and the feedback signal S2 is received by the ship 56, whereby each component of the tsunami detection device 1 operates normally. It is possible to diagnose whether or not

  In addition, when the sea level displacement detected by the tsunami generation detection unit 11 is equal to or greater than the first threshold and the vibration detected by the vibration detection unit 20 is equal to or greater than the second threshold, it is determined that a tsunami has occurred.

  In this case, as shown in FIG. 7, the connection of the connecting unit 16 that connects the tsunami generation information communication unit 14 and the seabed holding unit 15 is released, and the tsunami generation information communication unit 14 is disconnected from the seabed holding unit 15.

  As a result, the tsunami occurrence information communication unit 14 emerges. When the tsunami occurrence information communication unit 14 reaches the sea surface 41, the transmission means 13 transmits information related to the occurrence of the tsunami such as position information, sea surface displacement, seabed ground vibration, seawater temperature, and the like stored in the storage means 12. These pieces of information are transmitted via the GPS satellite 52 and received by the ground base station 57.

  Thus, since the tsunami detection apparatus 1 of the present invention transmits the information about the tsunami generation in a short time after detecting the generation of the tsunami, the information about the tsunami generation can be acquired in substantially real time by the ground base station 57 or the like. . Therefore, it can be used for disaster prevention.

  Further, since it is not necessary to connect the tsunami detection device 1 and the ground base station 57 with a cable, the installation is easy and the cost can be reduced. Moreover, it is possible to avoid the occurrence of troubles such as the cable being cut by marine life or ships.

  Furthermore, when the tsunami occurrence information communication unit 14 is sinking on the seabed 40, the ultrasonic transmission / reception means 31 transmits information relating to the occurrence of the tsunami, so that various types of information relating to the occurrence of the tsunami can always be acquired.

  In addition, a diagnostic function for judging whether or not each part is operating normally by transmitting an ultrasonic reference signal S1 from the ship 56, receiving it by the ultrasonic transmitting / receiving means 31, and transmitting its feedback signal S2 is provided. realizable.

  In addition, when a tsunami occurs, the tsunami occurrence information communication unit 14 automatically rises and transmits information on the occurrence of the tsunami such as sea surface displacement and seabed ground vibration. It is possible to save the trouble of re-installing after collecting the information periodically and taking out the information.

  In addition, the time for the tsunami generation information communication unit 14 to rise to the sea surface 41 can be shortened by increasing the capacity of the air chamber that is the rising means 17 of the tsunami generation information communication unit 14. Thereby, the information regarding tsunami generation can be transmitted in a shorter time after the tsunami generation.

  Moreover, the tsunami traveling speed can be detected by arranging a plurality of the tsunami detection devices 1 at predetermined intervals in a direction away from the coast.

<Second Embodiment>
FIG. 8 shows the connecting part 60 of the second embodiment according to the present invention. In the following description, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The connecting portion 60 includes a locking portion 61 having a U-shaped cross section provided on the seafloor holding portion 15 side, and a locking piece 62 provided on the tsunami occurrence information communication portion 14 side and locked to the locking portion 61. And an actuator 63 for driving the locking piece 62 to lock the locking portion 61 or releasing the locking.

  The locking piece 62 has a long side 62a and a short side 62b formed in a substantially L shape. The long side 62a is supported by the tsunami occurrence information communication unit 14 so as to be rotatable about the central axis 64. Moreover, the short side 62b is arrange | positioned so that insertion in the latching | locking part 61 is possible.

  The actuator 63 is provided on the tsunami generation information communication unit 14 side. The distal end of the telescopic rod 63a of the actuator 63 is attached to the end of the long side portion 62a of the locking piece 62 with a central shaft 65. When the telescopic rod 63a expands and contracts, the locking piece 62 rotates by a predetermined angle in both directions around the central axis 64.

  When the telescopic rod 63a of the actuator 63 is extended, the short side portion 62b of the locking piece 62 is inserted into the locking portion 61 and locked. Thereby, the tsunami generation information communication part 14 and the seabed holding part 15 are connected.

  As shown in FIG. 9, when the telescopic rod 63 of the actuator 63 is reduced, the short side portion 62b of the locking piece 62 is extracted from the locking portion 61, and the locking is released. As a result, the connection between the tsunami occurrence information communication unit 14 and the seabed holding unit 15 is released.

<Third embodiment>
FIG. 10 shows a tsunami detection device 70 according to a third embodiment of the present invention. The tsunami detection device 70 includes a plurality of tsunami generation information communication units 14 in this embodiment.

  Each tsunami occurrence information communication unit 14 is connected to the seabed holding unit 15 by a connecting unit 16. These connecting parts 16 are disconnected one by one based on the detection result of the tsunami generation detecting means 11 one by one.

  That is, when the detection result of the tsunami generation detection unit 11 is equal to or greater than the first threshold value and the detection result of the vibration detection unit 20 is equal to or greater than the second threshold value for the first time, for example, the tsunami generation information communication unit on the left side in FIG. 14, the connection of the connection part 16 in the right tsunami generation information communication part 14 is maintained.

  Thereby, as shown in FIG. 11, only one tsunami occurrence information communication unit 14 emerges, and the information stored in the storage unit 12 is transmitted.

  Next, when the detection result of the tsunami occurrence detection means 11 is equal to or greater than the first threshold value and the detection result of the vibration detection means 20 is equal to or greater than the second threshold value for the second time, the remaining tsunami occurrence information communication unit 14 is surfaced. The information stored in the storage means 12 is transmitted.

  According to this tsunami detection device 70, all tsunamis can be detected even when the tsunami occurs twice. Even if a tsunami occurs due to an aftershock, the tsunami can be detected.

  The order in which the connection of the connecting part 16 of the tsunami occurrence information communication unit 14 is released, that is, the order in which the tsunami occurrence information communication part 14 is levitated can be determined by the first CPU 22. In this case, by connecting the first CPUs 22 of each tsunami occurrence information communication unit 14, the process of determining the order of rising becomes easy. Further, three or more tsunami occurrence information communication units 14 can be provided.

It is a block diagram which shows the tsunami detection apparatus of 1st Embodiment which concerns on this invention. It is a figure which shows the specific example of the tsunami detection apparatus of 1st Embodiment which concerns on this invention. It is a figure which shows the connection part of 1st Embodiment which concerns on this invention. It is a figure which shows the state before the connection of the waterproof connector of 1st Embodiment which concerns on this invention. It is a figure which shows the connection state of the waterproof connector of 1st Embodiment which concerns on this invention. It is a figure explaining an effect | action in case the tsunami detection apparatus of 1st Embodiment which concerns on this invention is sinking in the seabed. It is a figure explaining an effect | action when the tsunami generation information communication part in the tsunami detection apparatus of 1st Embodiment which concerns on this invention surfaced on the sea surface. It is a figure which shows the connection state in the connection part of 2nd Embodiment which concerns on this invention. It is a figure which shows the connection cancellation | release state in the connection part of 2nd Embodiment which concerns on this invention. It is a figure which shows the tsunami detection apparatus of 3rd Embodiment which concerns on this invention. It is a figure explaining the effect | action of the tsunami detection apparatus of 3rd Embodiment which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tsunami detection apparatus 11 Tsunami generation detection means 12 Storage means 13 Transmission means 14 Tsunami generation information communication part 14a Opposite surface 15 Seabed holding part 15a Opposite surface 16 Connection part 17 Levitation means 18 Control means 19 Power supply means 20 Vibration detection means 21 Water pressure Total 23 Weight 24 Permanent magnet 25 Electromagnet 26 Auxiliary battery 27 Power supply circuit 28 Main battery 29 Waterproof connector 30 Thermometer 31 Ultrasonic transmission / reception means 40 Sea bottom 41 Sea surface 51 Fixed terminal 52 Movable terminal 52 GPS satellite 52a Terminal body 52b Head 53 Spring 54 Sealing member 55 Case 55 Clearance 56 Ship 57 Base station 58 Beach 60 Connecting part 61 Locking part 62 Locking piece 62a Long side 62a Long side part 62b Short side 62b Short side part 63 Actuator 63a Telescopic rods 64, 65 Central shaft 70 Tsunami detector

Claims (12)

A tsunami occurrence information communication unit that detects tsunami occurrence and transmits information about the tsunami occurrence;
A seabed holding section for holding the tsunami generation information communication section on the seabed;
Removably connecting the tsunami generation information communication unit and the seafloor holding unit, and including a connection unit that is disconnected when a tsunami generation is detected,
The tsunami occurrence information communication unit is a tsunami occurrence detection means for detecting the occurrence of the tsunami, a storage means for storing information relating to the occurrence of the tsunami detected by the tsunami occurrence detection means, and Transmitting means for transmitting information relating to the occurrence of the tsunami stored in the storage means, tsunami occurrence detecting means, power supply means for supplying power to the storage means and the transmitting means,
A tsunami detection device comprising:   The tsunami detection device according to claim 1, further comprising vibration detection means for detecting vibration of the seabed ground.   The tsunami detection device according to claim 1, wherein the transmission unit includes a GPS transmitter.   The said connection part has a permanent magnet provided in one of the said tsunami generation information communication part or the said seabed holding | maintenance part, and an electromagnet provided in the other. Tsunami detection device.   The connecting portion includes a locking portion provided on one of the tsunami occurrence information communication portion or the seabed holding portion, a locking piece provided on the other side and locked to the locking portion, and the locking piece. The tsunami detection device according to any one of claims 1 to 3, further comprising an actuator that is driven to be locked to the locking portion or to be unlocked.   The tsunami detection information communication unit according to any one of claims 1 to 5, wherein the tsunami generation information communication unit includes ultrasonic transmission / reception means.   The ultrasonic transmission / reception means receives an ultrasonic reference signal transmitted from the outside, and transmits a feedback signal to diagnose whether each means of the tsunami generation information communication unit is operating normally. The tsunami detection device according to claim 1, wherein the tsunami detection device is a tsunami detection device.   The tsunami generation information communication unit is provided in a plurality, and each time the occurrence of the tsunami is detected, the connection units in the tsunami generation information communication unit are disconnected one by one. The tsunami detection device according to any one of the above. The power supply means includes first power supply means provided in the tsunami occurrence information communication unit, and second power supply means provided in the seabed holding unit,
The tsunami detection device according to any one of claims 1 to 8, wherein the first power supply means and the second power supply means are connected by a waterproof connector.   The waterproof connector includes a protruding fixed terminal provided on one of the tsunami generation information communication unit or the seafloor holding unit, and is provided on the other side so as to be slidable to the fixed terminal side and elastic to the fixed terminal side. An energized movable terminal, and a sealing member that is sandwiched between the tsunami generation information communication unit and the seafloor holding unit and surrounds the periphery of the fixed terminal and the movable terminal. Item 10. The tsunami detection device according to item 9.   The tsunami detection device according to any one of claims 1 to 10, wherein the tsunami generation detection means includes sea level displacement detection means for detecting sea level displacement.   The tsunami detection device according to claim 11, wherein the sea level displacement detection means includes a water pressure gauge.

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