IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0285298
(2005-11-23)
|
등록번호 |
US-7672760
(2010-04-21)
|
우선권정보 |
NO-20054131(2005-09-06) |
발명자
/ 주소 |
- Solberg, Lars Andre
- Moræus, Jonas Aamodt
|
출원인 / 주소 |
|
대리인 / 주소 |
Rothwell, Figg, Ernst & Manbeck, PC
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
9 |
초록
A searchlight (3) on board a vessel (1) arranged for illuminating a point (2p) and maintain said point (2p) illuminated regardless of the movements of said vessel (1).
대표청구항
▼
The invention claimed is: 1. A searchlight (3) for use on a moving vessel (1), in which said searchlight (3) is arranged for sending a light beam with a beam axis (3a) which is arranged for illuminating a point or position (2p) of an object (2) which is situated on the surface of the sea, in which
The invention claimed is: 1. A searchlight (3) for use on a moving vessel (1), in which said searchlight (3) is arranged for sending a light beam with a beam axis (3a) which is arranged for illuminating a point or position (2p) of an object (2) which is situated on the surface of the sea, in which said searchlight (3) is arranged in a given elevation (h1) above the sea and is revolvable about a perpendicular axis (15a) with respect to a base plane (16) having a reference direction (16r) and a base plane parallel axis (15b) parallel to said base plane (16); in which said searchlight (3) beam axis (3a) is arranged for being revolved about said perpendicular axis (15a) and said base plane parallel axis (15b) for steering said beam axis (3a) towards said point (2p); in which said searchlight (3) is provided with a first motor (5a) for movement of said beam axis (3a) about said perpendicular axis (15a), and a second motor (5b) for movement of said beam axis (3a) about said base plane parallel axis (15b); characterised by the following features: a control unit (8) arranged for receiving measurements from the following devices: a first heading sensor (4a) for measuring an angle (v1) of said beam axis (3a) projected down onto said base plane (16) with respect to said reference direction (16r); a second heading sensor (4b) for measuring an angle (v2) of said beam axis (3a) with respect to said perpendicular axis (15a); vessel movement sensors (6) for measuring said vessels (1) rotational angles, in which said vessel movement sensors (6) comprise one or more of a yaw sensor (6d), a roll sensor (6b) and a pitch sensor (6c); a position sensor, for instance a GPS-receiver (7) which calculates geographic latitude (7a) and longitude (7b) in a coordinate system; a heave sensor (6a) arranged for calculating said vessels (1) heave position; in which said control unit (8) on the basis of the received measurements of said vessels (1) movements, said vessels (1) position, and said searchlight (3) orientation and position on said vessel (1) is further arranged for calculating and furnishing control signals (9) to said motors (5a, 5b) for rotating said beam axis (3a) about said perpendicular axis (15a) and said base plane parallel axis (15b), in order for said beam axis (3a) to be directed towards said desired point (2p) on the sea while said vessel (1) is in movement. 2. The searchlight according to claim 1 in which said control unit (8) is also arranged for receiving signals from sensors (6) for translatory movements, comprising a surge sensor (6e) and a sway sensor (6f). 3. The searchlight (3) according to claim 1, in which said vessel (1) is a manned or unmanned marine vessel. 4. The searchlight (3) according to claim 1, in which said vessel is a helicopter. 5. The searchlight (3) according to claim 1, in which said searchlight comprises a camera (18) arranged for continuous or partly continuous recording (18a) of images (18b). 6. The searchlight (3) according to claim 1, comprising measurement or computation of said vessels heave position on the basis of heave sensors (6a) at the instances (t1) and (t2) for computation of which new angles (v12, v22) said beam axis must take up to be directed towards said same point (2p) on the sea at the instances (t1) and (t2). 7. The searchlight according to claim 1, comprising measurement or computation of said vessels geographic position at the instances (t1) and (t2) for computation of which new angles (v12, v22) said beam axis must take up to be directed towards said same point (2p) on the sea, as given in geographical coordinates, at the instances (t1) and (t2). 8. Method for searches from a vessel (1) having a searchlight (3) with a light beam having a beam axis (3a), characterised in that said method comprises the following steps: computation in a control unit (8) of an angle (v1) of said beam axis' (3a) as projected down onto a base plane (16) with respect to a reference direction (16r), by using a first heading sensor (4a), in which said base plane (16) is fixed with respect to said vessel (1) and preferably parallel to the plane formed by said vessels' (1) longitudinal axis (16f1) and transversal axis (16f2), and in which a perpendicular axis (15a) of said searchlight (3) is parallel to said vessels' (1) vertical axis (16f3), and in which said axis (15b) is horizontal to a plane defined by said vessels horizontal axes (16f1, 16f2), and in which said vertical axis (16f3) is vertical at said vessels (1) neutral stationary position and rotates with said vessels (1) rotational movements, computation in said control unit (8) of said beam axis' (3a) angle (v2) with respect to a perpendicular axis (15a) to said base plane (16) by means of a second heading sensor (4b), reception in said control unit (8) of said searchlight's (3) height over the sea, registration of said vessels (1) rotational and translatory movements by means of a vessel movement sensors (6), registration of said vessels (1) geographical position in a coordinate system by means of a position measurer, e.g. a GPS-receiver (7a), computation in said control unit (8) of control signals (9) to motors (5a, 5b) for rotation of said beam axis (3a) about said perpendicular axis (15a) and said ground plane parallel axis (15b) so as for compensating for said vessels' (1) movements so as for said beam axis (3a) being held towards a desired fixed or movable point (2p) when said vessel (1) is moving. 9. A method according to claim 8 in which said desired point (2p) is a fixed geographic location at sea. 10. A method according to claim 8 in which said desired point (2p) is a movable geographic location at sea. 11. A method according to claim 8 in which said desired point (2p) is a fixed geographic location on land. 12. A method according to claim 8 in which said searchlight receives geographic coordinates defining a point (2p) from an index, memory or similar storage device, or geographic coordinates defined by an operator (20). 13. A method according to claim 12, in which said searchlight (3) directs said beam axis (3a) towards said point (2p) if said vessels (1) position is a distance from said point (2p) which is lesser or equal to a given distance r. 14. A method according to claim 8 in which said searchlight (3) beam axis (3a) is directed towards the object (2) at a first instance (t1) and a second instance (t2), and in which said control unit computes the difference between the positions (2pt1) and (2pt2) and on the basis of this computation computes an object velocity (V2) and stores this in a memory or other storage device for at a later instance (t3) using said velocity (V2) for computing said objects (2) position (2pt3). 15. A method according to claim (8) in which said position (2p) is changed according to a given search pattern (19), in which said search pattern (19) may be spiral shaped, rectangular line shaped, or describe a different shape, or in which said search pattern (19) is defined by an operator (20). 16. The method according to claim 15 in which said search pattern (19) is bounded by geographic points (gp1, gp2, . . . , gpn) which are furnished to said control system (8). 17. The method according to claim 15 in which an operator (20) during the search period marks out one or more points (2p1, 2p2, . . . , 2pn) and in which said points are stored in a memory or other storage device. 18. The method according to claim 8 in which two or more searchlights (31, 32, . . . ) coordinate their search patterns (19) so as for a second searchlight (32) to take over the illumination of said point (2p) if said point falls outside the area which is physically illuminable by a first searchlight (31) or the area which is defined to be said first searchlight (31) search area.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.