Vehicular collision object determining system
First Claim
Patent Images
1. A vehicular collision object determining system mounted on a vehicle comprising:
- a collision load sensor that detects a collision load;
a speed sensor that detects a vehicle speed of the vehicle;
a computing unit that computes at least one of a mass and rigidity of a collision object based on at least outputs from the collision load sensor and the speed sensor; and
a determining unit that determines whether the collision object is a pedestrian or not based on the at least one of the mass and the rigidity of the collision object,wherein the computing unit computes the mass of the collision object based on a vehicle speed when the collision object starts to collide with the vehicle and a one-time integration value that is obtained by integrating the collision load with respect to time in one time.
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Abstract
From a collision load, a one-time integration value and a two-time integration value are computed. The one-time integration value and two-time integration value are then used for obtaining a mass and rigidity of a collision object as two primary parameters. The obtained two primary parameters are used for determining whether or not the collision object is a pedestrian. This achieves accuracy in determining the collision object that is remarkably superior to a conventional method that uses a collision load waveform.
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Citations
26 Claims
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1. A vehicular collision object determining system mounted on a vehicle comprising:
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a collision load sensor that detects a collision load; a speed sensor that detects a vehicle speed of the vehicle; a computing unit that computes at least one of a mass and rigidity of a collision object based on at least outputs from the collision load sensor and the speed sensor; and a determining unit that determines whether the collision object is a pedestrian or not based on the at least one of the mass and the rigidity of the collision object, wherein the computing unit computes the mass of the collision object based on a vehicle speed when the collision object starts to collide with the vehicle and a one-time integration value that is obtained by integrating the collision load with respect to time in one time. - View Dependent Claims (7, 8, 9, 10, 11)
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2. A vehicular collision object determining system mounted on a vehicle comprising:
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a collision load sensor that detects a collision load; a speed sensor that detects a vehicle speed of the vehicle; a computing unit that computes at least one of a mass and rigidity of a collision object based on at least outputs from the collision load sensor and the speed sensor; and a determining unit that determines whether the collision object is a pedestrian or not based on the at least one of the mass and the rigidity of the collision object, wherein the computing unit computes the rigidity of the collision object based on a vehicle speed when the collision object starts to collide with the vehicle, a one-time integration value that is obtained by integrating the collision load with respect to time in one time, and a two-time integration value that is obtained by integrating the collision load with respect to time in two times. - View Dependent Claims (12, 13, 14, 15, 16)
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3. A vehicular collision object determining system mounted on a vehicle comprising:
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a collision load sensor that detects a collision load; a speed sensor that detects a vehicle speed of the vehicle; a computing unit that computes at least one of a mass and rigidity of a collision object based on at least outputs from the collision load sensor and the speed sensor; and a determining unit that determines whether the collision object is a pedestrian or not based on the at least one of the mass and the rigidity of the collision object, wherein the computing unit computes at least one of the mass and the rigidity of the collision object when the collision load decreases to a given ratio relative to a maximum after the collision load reaches the maximum. - View Dependent Claims (17, 18, 19, 20, 21)
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4. A vehicular collision object determining system mounted on a vehicle comprising:
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a collision load sensor that detects a collision load; a speed sensor that detects a vehicle speed of the vehicle; a computing unit that computes at least one of a mass and rigidity of a collision object based on at least outputs from the collision load sensor and the speed sensor; and a determining unit that determines whether the collision object is a pedestrian or not based on the at least one of the mass and the rigidity of the collision object; and a width sensor that detects a collision width between the collision object and a bumper of the vehicle, wherein the computing unit computes the rigidity of the collision object based on the collision width, the mass of the collision object, a vehicle speed when the collision object starts to collide with the vehicle, and a two-time integration value that is obtained by integrating the collision load with respect to time in two times. - View Dependent Claims (5, 6, 22, 23, 24, 25, 26)
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Specification