JP2006201147A - Tsunami early detecting device (abnormal tidal level observation device) - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system where a non-contact type sensor that performs fixed point observation of the level of the sea surface, namely tidal level, for a long time and does not disturb the travel of a vessel navigating on the ocean accurately reports the tidal level information 24-hours per day in real time, and issues an alarm in all parts of the shore when an abnormal tidal level is detected. <P>SOLUTION: The abnormal increase of the tidal level is detected by two or more facing infrared laser pulse transmitters A installed in fixed-point positions on the ocean and their receivers B. The measured level is transmitted from telemeter transmitters installed at points A and B to a base station 2 above the ground, and alarms and information are transmitted from a computer installed in the base station to a satellite 1 and various places 3, 4 and 5 of the shore in real time round-the-clock for a long time. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

Detailed description of the invention

The present invention relates to a sea level tide level observation apparatus, and more particularly to a tsunami prediction observation apparatus that detects the occurrence of an abnormal tide level.

At present, the tide level is measured using a water level gauge that applies the principle of “floating” such as float, and it is unstable to measure abnormal water level rise, and because it is constantly in contact with seawater, seaweed and shellfish There was a lot of adhesion and there was a difficulty in long-term measurement.

Problems to be solved by the invention

A non-contact type sensor that does not obstruct the passage of a ship navigating offshore by observing the sea level, that is, the tide level for a long period of time. A system that sends alarms throughout the department.

An example of an embodiment of the present invention will be described with reference to the drawings.
1. Powered by solar batteries and auxiliary rechargeable batteries, infrared laser transmitter A and laser receiver B are placed in a waterproof storage case and fixed relative to two or more remote islands or artificial islands above the sea surface. To do.
(Fig. 1)
2. The laser transmitter and receiver are fixed to a metal tower frame that has been subjected to salt-proof water treatment at any height of three or more locations.
(Fig. 4, 5)
3. The main body incorporates a focus adjustment device in order to adjust the focus of the laser beam according to the distance.
(Fig. 2)
4). Infrared laser transmitters and receivers B1 to B3 installed at several locations at arbitrary heights A1 to A3 of the tower frame are opposed to each other with a distance of several kilometers, and are constantly operating to transmit and receive repeatedly. When an object that interrupts the laser beam line (rise in tide level) appears, signals entering three or more laser light receiving units are blocked, and a warning signal is automatically issued simultaneously with closing of the receiving circuit.
(Fig. 1)
5. 4. above. If the interruption of the pulse signal is caused by a large vessel, it is determined by the computer of the base station. It is possible to judge whether it is due to the movement of the ship or the abnormal rise of the sea level according to the interruption position on the plane and the interruption time, thus preventing malfunction.
(Fig. 3)
6). 4. above. The rising dimensions of the tide level can be detected by laser transmitters provided at different heights A1 to A3.
(Fig. 4, 5)
7). Above 1. All of the pulse signals from the multiple laser transmitters and receivers are collected at a base station installed on the ground, and the data is analyzed instantaneously by a computer, and an alarm is issued if necessary.
(Fig. 1)

The invention's effect

Large heavy equipment is not required, installation cost is low, and construction can be easily performed, and maintenance of the equipment after installation is easy.
It is a disaster prevention system device that can monitor and detect information on the occurrence of tsunamis that cause terrible damage for people living in the coastal areas of the ocean 24 hours a day.

It is a block diagram of the whole system of this invention. Indicates the state where the laser beam detects an abnormal tide level. It is a sectional side view of the outline which omitted the internal mechanism of a laser beam transmitter. It is a sectional side view of the outline which omitted an internal mechanism of a laser beam receiver. It is a sectional side view of the mount which erected a solar cell, a laser beam transmitter, and a telemeter. It is side sectional drawing of the mount frame which built the solar cell, the laser beam receiver, and the telemeter. FIG. It is a basic layout figure which shows plane arrangement | positioning on the ocean of the laser transmitter and receiver shown in FIG. It is a regular route table | surface which shows the path | route of information transmission until an abnormal tide level is detected and a warning is transmitted to a coastal area.

Claims (10)

Because it uses an infrared laser, it does not hinder the navigation of ships on the ocean. Since the infrared laser is pulsed (1: 3 Sec), the laser emitting diode has a lifetime of 10,000 to 20,000 hours, and is pulsed to maintain it for a longer period.
If it is once every 3 seconds, it can operate for 3-60,000 hours.
Maintenance is required once every 3 to 6 years. Because it uses an infrared laser, it passes through smoke, haze, and fine dust drifting in the air. Because it uses solar cells, it can be installed anywhere on the ocean (using low-voltage rechargeable batteries) and unattended observation is possible. Observation data is transmitted by radio to a ground base station in the coastal area by a telemeter powered by the solar cell and auxiliary storage battery. The laser beam transmitter and receiver can be installed and installed at any height of 3m, 5m, 7m, etc., and the rising position of the tide level can be measured in meters. Because it is installed on islands and man-made islands scattered on the ocean far from the coastal area, it is possible to observe fixed points at all times. In order to improve reliability, a laser beam transmitter and receiver are installed alternately to construct a bidirectional W check system. By standardizing each part, maintenance can be replaced for each part, maintenance is easy, maintenance costs can be kept low, and inventory management costs and transportation costs can be reduced. 10. In order to increase the detection level of the laser transmitter and the light receiver, the plane layout on the ocean shall be as follows.
A. Board type B. Radiation type C.I. Overlapping triangles Parallelogram type

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