JPS577575A - Apparatus for detecting movement of ship or offshore structure from anchorage position - Google Patents
Apparatus for detecting movement of ship or offshore structure from anchorage positionInfo
- Publication number
- JPS577575A JPS577575A JP8103480A JP8103480A JPS577575A JP S577575 A JPS577575 A JP S577575A JP 8103480 A JP8103480 A JP 8103480A JP 8103480 A JP8103480 A JP 8103480A JP S577575 A JPS577575 A JP S577575A
- Authority
- JP
- Japan
- Prior art keywords
- ship
- movement
- receiver
- ultrasonic transmitter
- offshore structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/50—Systems of measurement, based on relative movement of the target
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
PURPOSE:To provide a less-expensive apparatus for detecting dangerous movement of ship or offshore structure from anchorage position, wherein the distance of movement of the ship or the offshore structure from the anchorage position is measured by means of ultrsonic wave transmitter and receiver using the anchorage position as the reference position, and an alarm is generated when the amount of movement exceeds a predetermined warning value. CONSTITUTION:A ship or an offshore structure (referred to as ''ship'') is provided at its portion B with an ultrasonic transmitter/receiver unit 1 directed in either the fore (bow) or aft. (stern) of the shop and another ultrasonic transmitter/receiver 2 directed to the left or right direction. The ship is provided also at its portion C with a still another ultrasonic transmitter/receiver unit which is directed either in the left or right direction perpendicular to the longitudinal axis of the hull. All of the ultrasonic transmitter/receiver units 1.2 and 3 are adapted to transmit and receive ultrasonic waves to and from the sea bottom at predetermined angles. The signal transmitted from and received by the ultrasonic transmitter/receiver units 1, 2 and 3 are delivered to a Dopper sonic wave velocity meters 4-6 which are adapted to measure the velocities of the ship making use of frequency change due to Doppler effect. The velocities thus measured are integrated by integration units 7-9 into the distance of movement in each direction. The distances of movements in three directions thus obtained are compared with respective set values in a comparator 11. An alarm is generated automatically when one of the set values is exceeded by the measured distance of movement. It is thus possible to obtain an apparatus at a low cost.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8103480A JPS577575A (en) | 1980-06-16 | 1980-06-16 | Apparatus for detecting movement of ship or offshore structure from anchorage position |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8103480A JPS577575A (en) | 1980-06-16 | 1980-06-16 | Apparatus for detecting movement of ship or offshore structure from anchorage position |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS577575A true JPS577575A (en) | 1982-01-14 |
JPS6218025B2 JPS6218025B2 (en) | 1987-04-21 |
Family
ID=13735166
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8103480A Granted JPS577575A (en) | 1980-06-16 | 1980-06-16 | Apparatus for detecting movement of ship or offshore structure from anchorage position |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS577575A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6033189A (en) * | 1983-08-04 | 1985-02-20 | Oki Electric Ind Co Ltd | System for observing travelling anchor |
WO2008151395A3 (en) * | 2007-06-13 | 2009-04-02 | Adh Products Pty Ltd | Boat control apparatus |
ITBO20110062A1 (en) * | 2011-02-15 | 2012-08-16 | Luciano Tinti | METHOD AND DEVICE FOR THE MONITORING OF THE MOORING POSITION OF A BOAT |
ITBO20110273A1 (en) * | 2011-05-16 | 2012-11-17 | Luciano Tinti | DEVICE FOR THE SURVEILLANCE OF THE MOORING POSITION OF A BOAT |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4917768A (en) * | 1972-06-06 | 1974-02-16 | ||
JPS52151072A (en) * | 1976-06-11 | 1977-12-15 | Kaijo Denki Kk | System for chasing signal reverberating from sea bottom |
-
1980
- 1980-06-16 JP JP8103480A patent/JPS577575A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4917768A (en) * | 1972-06-06 | 1974-02-16 | ||
JPS52151072A (en) * | 1976-06-11 | 1977-12-15 | Kaijo Denki Kk | System for chasing signal reverberating from sea bottom |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6033189A (en) * | 1983-08-04 | 1985-02-20 | Oki Electric Ind Co Ltd | System for observing travelling anchor |
JPH044199B2 (en) * | 1983-08-04 | 1992-01-27 | ||
WO2008151395A3 (en) * | 2007-06-13 | 2009-04-02 | Adh Products Pty Ltd | Boat control apparatus |
ITBO20110062A1 (en) * | 2011-02-15 | 2012-08-16 | Luciano Tinti | METHOD AND DEVICE FOR THE MONITORING OF THE MOORING POSITION OF A BOAT |
ITBO20110273A1 (en) * | 2011-05-16 | 2012-11-17 | Luciano Tinti | DEVICE FOR THE SURVEILLANCE OF THE MOORING POSITION OF A BOAT |
Also Published As
Publication number | Publication date |
---|---|
JPS6218025B2 (en) | 1987-04-21 |
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