Device for signaling risks, risk level map obtained by the device and method for formulating the map
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G08G-005/04
G08G-005/00
출원번호
UP-0574881
(2005-07-27)
등록번호
US-7633411
(2009-12-24)
우선권정보
FR-04 09463(2004-09-07)
국제출원번호
PCT/EP05/053655
(2005-07-27)
§371/§102 date
20070307
(20070307)
국제공개번호
WO06/029935
(2006-03-23)
발명자
/ 주소
Bitar, Elias
Marty, Nicolas
출원인 / 주소
Thales
대리인 / 주소
Lowe Hauptman Ham & Berner, LLP
인용정보
피인용 횟수 :
1인용 특허 :
4
초록▼
The device relates to the signaling, to the pilot of a craft, of the risks that it incurs due to obstacles placed in its zone of deployment. This device determines, on the zone of deployment of the craft, the contours of several types of risk region as well as the contours of two lateral regions of
The device relates to the signaling, to the pilot of a craft, of the risks that it incurs due to obstacles placed in its zone of deployment. This device determines, on the zone of deployment of the craft, the contours of several types of risk region as well as the contours of two lateral regions of tight deployment tied to the craft and produces alarms as a function of the types of zones at risk found in the lateral regions of tight deployment.
대표청구항▼
The invention claimed is: 1. A device for signaling risks incurred by a craft on account of real or regulatory obstacles situated in its domain of progress, comprising: means for selecting a zone of deployment, means for considering various types of risk region of the selected zone of deployment, o
The invention claimed is: 1. A device for signaling risks incurred by a craft on account of real or regulatory obstacles situated in its domain of progress, comprising: means for selecting a zone of deployment, means for considering various types of risk region of the selected zone of deployment, of which a first type of risk region consisting of regions inaccessible to the craft because of its capabilities of crossing at a time and/or of regulatory forbidden crossing regions, means for determining a second type of risk region of the selected zone of deployment, including the regions inaccessible to the craft after an adoption of a fallback trajectory profile envisaged in advance, and means for determining, in the selected zone of deployment, of two lateral regions of tight deployment, to a right and to a left with respect to a position of the craft and to a direction of a course that it follows, defined on a basis of a ground trace of the trajectory which would be traversed by the craft if it performed a change of direction of a magnitude determined during a turn with radius of curvature also determined. 2. The device as claimed in claim 1, further comprising: means for determining, in the selected zone of deployment, a third type of risk region surrounding the regions of first and second types and constituting margins necessary for a free lateral deployment of the craft. 3. The device as claimed in claim 2, further comprising: means for determining, in the selected zone of deployment, of two lateral regions of tight deployment, to the right and to the left with respect to the position of the craft and to the direction of the course that it follows, defined on the basis of the ground trace of the trajectory which would be traversed by the craft if it performed a change of direction of a magnitude determined during a turn with radius of curvature also determined, detection means for detecting points of the lateral zones of tight deployment belonging to one or more types of risk region, and alarm means triggered by the detection means at each detection of a point of a lateral zone of deployment belonging to at least one type of risk region (ZCLIMB, ZLEVEL or ZTURN). 4. The device as claimed in claim 3, wherein the detection means comprise means for scoring of the risk level allocating to each point of the two lateral regions of tight deployment, a score corresponding to: a zero risk level when the point considered belongs to no type of risk region taken into consideration, a low risk level when the point considered belongs only to the third type of risk region not exhibiting medium the margins necessary for a free lateral deployment, a medium risk level when the point considered belongs to the second type of risk region constituting a threat only after the adoption of the fallback trajectory profile, and a high risk level when the point considered belongs to the first type of risk region constituting a threat since it is above the current capabilities of crossing of the craft or/and regulatory forbidden crossing capabilities, the alarm means delivering an alarm level corresponding to the larger risk level score assigned to the points of the two lateral regions of tight deployment and signaling the origin side of the threat by consideration of the right or left nature of the lateral region or regions of tight deployment comprising the points with larger risk score. 5. The device as claimed in claim 3, wherein the alarm means produce various alarm levels according to the types of risk region detected in the lateral zones of tight deployment. 6. The device as claimed in claim 3, wherein the alarm means deliver distinct alarms depending at one and the same time on the lateral zone of tight deployment concerned, right or left, and on the types of risk region detected in said lateral zone of tight deployment. 7. A risk level map obtained with the device as claimed in claim 2, wherein the device displays, in a distinct manner, within the zone of deployment, a first type of region inaccessible to the craft because of its crossing capabilities at the time and/or regulatory forbidden crossing capabilities, a second type of region inaccessible to the craft after the adoption of a fallback trajectory profile, a third type of region constituting margins necessary, about the first and second types of risk region for a free lateral deployment of the craft and the parts of the zone of deployment complementary to the various types of region taken into account. 8. A method of formulating the risk level map as claimed in claim 7 comprising the following steps: formulation of contours of region belonging to the first type of risk region by application, to elements of a terrain elevation database covering the zone of deployment of the craft, of a constrained distance transform having, as source point, a point in a neighborhood of an instantaneous position of the craft and, as a constraint, a path profile adopting after an arbitrarily fixed anticipation time, a maximum climb slope permitted for the craft, and complementation of the contours of the regions of the first type of risk region by the contours of regions with regulatory forbidden crossing that are extracted from a database of forbidden zones, formulation of the contours of regions belonging to the second type of risk region by application, to the elements of the terrain elevation database, of a constrained distance transform having, as source point, a point in the neighborhood of the instantaneous position of the craft and, as the constraint, a path profile adopting after an arbitrarily fixed anticipation time, a slope of the fallback trajectory profile, and allocation of distinct appearances to the points of the first and second types of risk region. 9. The method for formulating the risk level map as claimed in claim 7 comprising the following steps: formulation of contours of region belonging to the first type of risk region by application, to the elements of a terrain elevation database covering the zone of deployment of the craft, of a constrained distance transform having, as source point, a point in the neighborhood of the instantaneous position of the craft and, as a constraint, a path profile adopting after an arbitrarily fixed anticipation time, the maximum climb slope permitted for the craft and complementation of the contours of the regions of the first type of risk region by the contours of regions with regulatory forbidden crossing that is extracted from a database of forbidden zones, formulation of the contours of regions belonging to the second type of risk region by application, to the elements of the terrain elevation database, of a constrained distance transform having, as source point, a point in the neighborhood of the instantaneous position of the craft and, as the constraint, a path profile adopting after an arbitrarily fixed anticipation time, the slope of the fallback trajectory profile, determination, as a function of the performance of the craft, of a minimum horizontal maneuvering distance allowing the craft to perform a complete turn, estimation of the distances with respect to the contours of the regions of the first and second types of risk region by means of a distance transform having the first and second types of risk region as source points, placement of contours about the regions of the first and second type of risk regions at the smallest distances complying at one and the same time with the minimum horizontal maneuvering distance and a minimum vertical distance with respect to the relief and adoption of these contours in a guise of contours of the regions of third type, and allocation of distinct appearances to the points of the various types of risk region. 10. The method as claimed in claim 9, further comprising the following steps: formulation, on either side of the instantaneous position of the craft and of its instantaneous course, of two lateral regions of tight deployment, tied to the instantaneous position of the craft and defined on the basis of the ground trace of the craft performing a change of direction determined during a turn with radius of curvature also determined, and distinctive marking of the points of the two lateral regions of tight deployment as a function of their membership in regions of first, second or third type. 11. The method as claimed in claim 9, further comprising the following steps: formulation, on either side of the instantaneous position of the craft and of its instantaneous course, of two lateral regions of tight deployment, tied to the instantaneous position of the craft and corresponding, on one side and on the other, to the surfaces lying between two complete turns of the craft performed on one and the same side with different radii of curvature, and distinctive marking of the points of the two lateral regions of tight deployment as a function of their membership in regions of first, second or third type. 12. The method as claimed in claim 8 further comprising the following steps: formulation, on either side of the instantaneous position of the craft and of its instantaneous course, of two lateral regions of tight deployment, tied to the instantaneous position of the craft and defined on the basis of the ground trace of the craft performing a change of direction determined during a turn with radius of curvature also determined, and distinctive marking of the points of the two lateral regions of tight deployment as a function of their membership in regions of first, second or third type. 13. The method as claimed in claim 12, applied to an aircraft, wherein the two lateral regions of tight deployment are defined on the basis of the traces left on the ground, by trajectories carried by turns of like radius and that are deformed by the drift due to local wind. 14. The method as claimed in claim 8 further comprising the following steps: formulation, on either side of the instantaneous position of the craft and of its instantaneous course, of two lateral regions of tight deployment, tied to the instantaneous position of the craft and corresponding, on one side and on the other, to the surfaces lying between two complete turns of the craft performed on one and the same side with different radii of curvature, and distinctive marking of the points of the two lateral regions of tight deployment as a function of their membership in regions of first, second or third type. 15. The method as claimed in claim 14, applied to an aircraft, wherein the two lateral regions of tight deployment are defined on the basis of the traces left on the ground, by trajectories carried by turns of like radius and that are deformed by the drift due to the local wind. 16. The risk levels map as claimed in claim 7, wherein the device displays, in a distinct manner, two lateral regions of tight deployment, placed to the right and to the left with respect to the position occupied by the craft and to the direction of the course that it follows, and defined on the basis of an arbitrary amplitude of change of direction and of an arbitrary amplitude of turning radius. 17. The device as claimed in claim 2, comprising display means showing the selected zone of deployment in the form of a map of zones at risk presenting under distinct appearances each of the types taken into account of risk region and the part of the selected zone of deployment complementary to the various types taken into account of risk region. 18. The device as claimed in claim 1, further comprising: detection means for detecting points of the lateral zones of tight deployment belonging to one or more types of risk region, and alarm means triggered by the detection means at each detection of a point of a lateral zone of tight deployment belonging to at least one type of risk region. 19. The device as claimed in claim 18, wherein the alarm means produce various alarm levels according to the types of risk region detected in the lateral zones of tight deployment. 20. The device as claimed in claim 18, wherein the alarm means deliver distinct alarms depending simultaneously on the lateral zone of tight deployment concerned, right or left, and on the types of risk region detected in said lateral zone of tight deployment. 21. The device as claimed in claim 18, for aircraft, wherein: the first type of risk region corresponds to uncrossable regions for the aircraft assuming that it acquires, after an arbitrarily fixed anticipation time (Ta1), a maximum climb slope or/and to the regions whose crossing is regulatory forbidden to it, the second type of risk region corresponds to the regions uncrossable by the aircraft assuming that it holds a horizontal plateau after an arbitrarily fixed anticipation time, the third type of risk region corresponds to marginal fringes surrounding the regions of the first and second types, of width corresponding to that necessary for the aircraft to perform a complete flat turn with a shortest permitted radius, and the two lateral regions of tight deployment correspond to an arbitrary amplitude change of direction obtained during a turn of arbitrary radius of curvature. 22. The device as claimed in claim 18, for aircraft, wherein the two lateral regions of tight deployment are defined on the basis of the traces left on the ground, by trajectories carried by turns of like radius, and deformed by the drift due to the local wind. 23. The device as claimed in claim 1, comprising display means showing the selected zone of deployment in the form of a map of zones at risk presenting under distinct appearances each of the types taken into account of risk region and the part of the selected zone of deployment complementary to the various types taken into account of risk region. 24. A risk level map obtained by the device as claimed in claim 1, wherein the device displays, in a distinct manner, within a zone of deployment, a first type of region inaccessible to the craft because of its crossing capabilities at the time and/or regulatory forbidden crossing capabilities, a second type of region inaccessible to the craft after the adoption of a fallback trajectory profile and the parts of the zone of deployment complementary to the various types of region taken into account. 25. The risk levels map as claimed in claim 24, wherein the device displays, in a distinct manner, two lateral regions of tight deployment, placed to the right and to the left with respect to the position occupied by the craft and to the direction of the course that it follows, and defined on the basis of an arbitrary amplitude of change of direction and of an arbitrary amplitude of turning radius.
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