Device and method for signaling lateral maneuver margins

A device, for moving vehicles, for signaling lateral maneuver margins comprising:

• means for selecting a maneuvering zone on the surface of the Earth,
• means for taking into account, in the selected maneuvering zone, a first type of risk region comprising regions considered to be uncrossable,
• separation threshold generation means for generating at least one horizontal separation threshold to be observed relative to the first type of risk region to claim a complete freedom of lateral maneuver, said separation threshold generation means taking into account, in the estimation of a separation threshold for a contour point of a region of the first type, the bearing angle of the contour point concerned seen from the moving vehicle, and
• means of determining, in the selected maneuvering zone, a second type of risk region made up of regions where the moving vehicle has a restricted lateral maneuvering freedom, said second type of risk region surrounding the first type of risk region over widths at least equal to the separation threshold established by the separation threshold generation means,
• wherein the separation threshold generation means generate separation thresholds includes at least one distance component corresponding to the length of the projection, on the bearing axis of the contour point concerned relative to the moving vehicle, of an avoidance turn arc of determined diameter.

A device, for moving vehicles, for signaling lateral maneuver margins comprising:

• means for selecting a maneuvering zone on the surface of the Earth,
• means for taking into account, in the selected maneuvering zone, a first type of risk region comprising regions considered to be uncrossable,
• separation threshold generation means for generating at least one horizontal separation threshold to be observed relative to the first type of risk region to claim a complete freedom of lateral maneuver, said separation threshold generation means taking into account, in the estimation of a separation threshold for a contour point of a region of the first type, the bearing angle of the contour point concerned seen from the moving vehicle, and
• means of determining, in the selected maneuvering zone, a second type of risk region made up of regions where the moving vehicle has a restricted lateral maneuvering freedom, said second type of risk region surrounding the first type of risk region over widths at least equal to the separation threshold established by the separation threshold generation means,
• wherein the separation threshold generation means determine, for each contour point of the regions of the first type in direct sight of the moving vehicle, a dynamic separation threshold taking a value increasing with the bearing angle, relative to the moving vehicle, of the contour point concerned, and
• wherein the separation threshold generation means determine a static separation threshold (MLCDSTATIC) valid for all the contour points (P) of the regions of the first type (ZRISK), and taken to be equal to the dynamic threshold (MLCDDYNAMIC) of a contour point (P) situated at 90 degrees bearing.

A device, for moving vehicles, for signaling lateral maneuver margins comprising:

• means for selecting a maneuvering zone on the surface of the Earth,
• means for taking into account, in the selected maneuvering zone, a first type of risk region comprising regions considered to be uncrossable,
• separation threshold generation means for generating at least one horizontal separation threshold to be observed relative to the first type of risk region to claim a complete freedom of lateral maneuver, said separation threshold generation means taking into account, in the estimation of a separation threshold for a contour point of a region of the first type, the bearing angle of the contour point concerned seen from the moving vehicle, and
• means of determining, in the selected maneuvering zone, a second type of risk region made up of regions where the moving vehicle has a restricted lateral maneuvering freedom, said second type of risk region surrounding the first type of risk region over widths at least equal to the separation threshold established by the separation threshold generation means,
• wherein the separation threshold generation means determine a static separation threshold (MLCDSTATIC) valid for all the contour points (P) of the regions of the first type (ZRISK) and greater than or equal to the diameter (2R, 2SIDE_TURN_RADIUS) of an avoidance turn.

A device, for moving vehicles, for signaling lateral maneuver margins comprising:

• means for selecting a maneuvering zone on the surface of the Earth,
• means for taking into account, in the selected maneuvering zone, a first type of risk region comprising regions considered to be uncrossable,
• separation threshold generation means for generating at least one horizontal separation threshold to be observed relative to the first type of risk region to claim a complete freedom of lateral maneuver, said separation threshold generation means taking into account, in the estimation of a separation threshold for a contour point of a region of the first type, the bearing angle of the contour point concerned seen from the moving vehicle,
• means of determining, in the selected maneuvering zone, a second type of risk region made up of regions where the moving vehicle has a restricted lateral maneuvering freedom, said second type of risk region surrounding the first type of risk region over widths at least equal to the separation threshold established by the separation threshold generation means:
• means of selecting a maneuvering zone for the moving vehicle on the surface of the Earth,
• means of taking into account, in the selected maneuvering zone, a first type of risk region made up of regions considered as having to be bypassed,
• lateral separation threshold generation means determining a dynamic separation threshold for each contour point of the regions of the first type in direct sight of the moving vehicle, taking into account the bearing angle of the contour point concerned relative to the moving vehicle and a static separation threshold valid for all the contour points of the regions of the first type, greater than or equal to the diameter of the avoidance turn, said dynamic separation thresholds taking values increasing with the absolute value of the bearing angles to a limit value taken to be equal to the static threshold,
• means of determining, in the selected maneuvering zone, a second type of risk region made up of regions where the moving vehicle has a restricted lateral maneuvering freedom, said second type of risk region extending around the first type of risk region and having, in front of the points of the risk regions of the first type in sight of the moving vehicle, widths at least equal to the dynamic separation thresholds supplied by the separation threshold generation means, and
• means of determining, in the selected maneuvering zone, a third type of risk region made up of regions where the moving vehicle can have a restricted lateral maneuvering freedom, said third type of risk region extending around the first type over a width at least equal to the static separation threshold supplied by the separation threshold generation means.