GB1355894A - Method and apparatus for detecting the position of an object - Google Patents
Method and apparatus for detecting the position of an objectInfo
- Publication number
- GB1355894A GB1355894A GB4766672A GB1355894DA GB1355894A GB 1355894 A GB1355894 A GB 1355894A GB 4766672 A GB4766672 A GB 4766672A GB 1355894D A GB1355894D A GB 1355894DA GB 1355894 A GB1355894 A GB 1355894A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hydrofoil
- transducer
- transmitted
- output
- oscillator
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
- B63B1/24—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type
-
- 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
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/14—Systems for determining distance or velocity not using reflection or reradiation using ultrasonic, sonic, or infrasonic waves
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
1355894 Ultrasonic distance measurement BOEING CO 16 Oct 1972 47666/72 Heading H4D A method of detecting the position of a liquidgas interface comprises measuring the transmission time of an ultrasonic signal transmitted from a point in the gas to a point in the liquid. Although it is stated that the invention may be used in any liquid level measurement, the main embodiment describes a system for controlling the submerged depth of a hydrofoil on an ocean going hydrofoil vessel. A continuous wave signal is transmitted by transducer 16 on the hull to a receiving transducer 18 on the hydrofoil. The received signal is fed to the input of gated amplifier 46 whose other input is derived from frequency division of the oscillator 40 output. Difference in phase between transmitted and received signals controls the frequency of oscillator 40, whose output represents the transit time and which is fed to discriminator 54 and display 26. The discriminator provides an output to a control system which adjusts the foil attitude thus controlling its depth. The beam width of transducer 16 is sufficient to ensure that for an average ocean wave (slope 16 degrees) the extremities of the beam are incident at the critical angle, thus ensuring that the beam ensonifies the whole underwater volume (Figs. 2- 4, not shown). Display 26 may be x-y recorder or a C.R.T.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4766672 | 1972-10-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1355894A true GB1355894A (en) | 1974-06-05 |
Family
ID=10445839
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4766672A Expired GB1355894A (en) | 1972-10-16 | 1972-10-16 | Method and apparatus for detecting the position of an object |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1355894A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2495784A1 (en) * | 1980-12-10 | 1982-06-11 | Chevron Res | APPARATUS AND METHOD FOR DETERMINING THE POSITION OF A MARINE FLUTE TRAILED BY A SHIP |
FR2563800A1 (en) * | 1984-05-07 | 1985-11-08 | Rusev Simeon | Object provided with hydrodynamic lift wings |
WO1993011405A1 (en) * | 1991-11-29 | 1993-06-10 | Dmitry Gennadievich Tretjyakov | Displacement transducer |
CN102829842A (en) * | 2012-08-02 | 2012-12-19 | 中国科学院水利部成都山地灾害与环境研究所 | Device and method for measuring mud depth of debris flow |
-
1972
- 1972-10-16 GB GB4766672A patent/GB1355894A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2495784A1 (en) * | 1980-12-10 | 1982-06-11 | Chevron Res | APPARATUS AND METHOD FOR DETERMINING THE POSITION OF A MARINE FLUTE TRAILED BY A SHIP |
FR2563800A1 (en) * | 1984-05-07 | 1985-11-08 | Rusev Simeon | Object provided with hydrodynamic lift wings |
WO1993011405A1 (en) * | 1991-11-29 | 1993-06-10 | Dmitry Gennadievich Tretjyakov | Displacement transducer |
CN102829842A (en) * | 2012-08-02 | 2012-12-19 | 中国科学院水利部成都山地灾害与环境研究所 | Device and method for measuring mud depth of debris flow |
CN102829842B (en) * | 2012-08-02 | 2014-10-01 | 中国科学院水利部成都山地灾害与环境研究所 | Device and method for measuring mud depth of debris flow |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PE20 | Patent expired after termination of 20 years |