Vehicle collision decision apparatus
First Claim
1. A vehicle collision decision apparatus comprising:
- an acceleration measuring device for measuring an acceleration which acts on a vehicle and generating an acceleration signal;
an occupant movement characteristics calculating device for calculating occupant movement characteristics according to an acceleration signal which is measured by the acceleration measuring device;
an occupant movement characteristics determining device for determining whether or not the occupant movement characteristics exceed a predetermined movement characteristics determining threshold;
a frequency analyzing device for decomposing waveforms of the acceleration signal which are measured by the acceleration measuring device into frequency components;
a frequency component determining threshold setting device for setting a predetermined frequency component determining threshold for the frequency component according to results by the occupant movement characteristics determining device;
a frequency component determining device for determining whether or not the frequency component exceeds the frequency component determining threshold;
a control signal generating device for generating a control signal for controlling an occupant-protecting apparatus according to results by the frequency component determining device.
2 Assignments
0 Petitions
Accused Products
Abstract
A vehicle collision decision apparatus determines whether or not an occupant-protecting apparatus should be started in a collision by an occupant moving characteristics determining device. Also, whether or not the collision continues is determined in an acceleration change determining section. A determining threshold for a frequency component which indicates a damage to the vehicle which is calculated in a frequency component calculating device is selected. The occupant-protecting apparatus is activated appropriately by monitoring the damage to the vehicle in the frequency component determining device 19 by using the frequency component.
By doing this, a vehicle collision decision apparatus which can determine the determining the condition in the vehicle collision appropriately is provided.
18 Citations
8 Claims
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1. A vehicle collision decision apparatus comprising:
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an acceleration measuring device for measuring an acceleration which acts on a vehicle and generating an acceleration signal;
an occupant movement characteristics calculating device for calculating occupant movement characteristics according to an acceleration signal which is measured by the acceleration measuring device;
an occupant movement characteristics determining device for determining whether or not the occupant movement characteristics exceed a predetermined movement characteristics determining threshold;
a frequency analyzing device for decomposing waveforms of the acceleration signal which are measured by the acceleration measuring device into frequency components;
a frequency component determining threshold setting device for setting a predetermined frequency component determining threshold for the frequency component according to results by the occupant movement characteristics determining device;
a frequency component determining device for determining whether or not the frequency component exceeds the frequency component determining threshold;
a control signal generating device for generating a control signal for controlling an occupant-protecting apparatus according to results by the frequency component determining device. - View Dependent Claims (4)
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2. A vehicle collision decision apparatus comprising:
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an acceleration measuring device for measuring an acceleration which acts on a vehicle and generating an acceleration signal;
an occupant movement characteristics calculating device for calculating occupant movement characteristics according to an acceleration signal which is measured by the acceleration measuring device;
an occupant movement characteristics determining device for determining whether or not the occupant movement characteristics exceed a predetermined movement characteristics determining threshold;
an acceleration change calculating device for calculating changes in the acceleration signal which is measured by the acceleration measuring device;
an acceleration change determining device for determining whether or not the changes in the acceleration exceeds the predetermined acceleration determining threshold;
a control signal generating device for generating a control signal for controlling an occupant-protecting apparatus according to results determined by the occupant movement characteristics determining device and the acceleration change determining device.
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3. A vehicle collision decision apparatus comprising:
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an acceleration measuring device for measuring an acceleration which acts on a vehicle and generating an acceleration signal;
an occupant movement characteristics calculating device for calculating occupant movement characteristics according to an acceleration signal which is measured by the acceleration measuring device;
an occupant movement characteristics determining device for determining whether or not the occupant movement characteristics exceed a predetermined movement characteristics determining threshold;
an acceleration change calculating device for calculating changes in the acceleration signal which is measured by the acceleration measuring device;
an acceleration change determining device for determining whether or not the changes in the acceleration exceeds the predetermined acceleration determining threshold;
a frequency component analyzing device for decomposing a waveform of the acceleration signal which is generated by the acceleration measuring device into a frequency component;
a frequency component determining threshold setting device for setting a predetermined frequency component determining threshold for the frequency component according to results by the occupant movement characteristics determining device and the acceleration change determining device;
a frequency component determining device for determining whether or not the frequency component exceeds the frequency component determining threshold; and
a control signal generating device for generating a control signal for controlling an occupant-protecting apparatus according to results determined by the frequency component determining device.
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5. A vehicle collision decision method having steps of:
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an acceleration measuring step for measuring an acceleration which acts on a vehicle and generating an acceleration signal;
an occupant movement characteristics calculating step for calculating occupant movement characteristics according to an acceleration signal which is measured by the acceleration measuring device;
an occupant movement characteristics determining step for determining whether or not the occupant movement characteristics exceed a predetermined movement characteristics determining threshold;
a frequency analyzing step for decomposing waveforms of the acceleration signal which are measured by the acceleration measuring device into frequency component;
a frequency component determining threshold setting step for setting a predetermined frequency component determining threshold for the frequency component according to results obtained in the occupant movement characteristics determining step;
a frequency component determining step for determining whether or not the frequency component exceeds the frequency component determining threshold;
a control signal generating step for generating a control signal for controlling an occupant-protecting apparatus according to results obtained in the frequency component determining step. - View Dependent Claims (8)
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6. A vehicle collision decision method having steps of:
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an acceleration measuring step for measuring an acceleration which acts on a vehicle and generating an acceleration signal;
an occupant movement characteristics calculating step for calculating occupant movement characteristics according to an acceleration signal which is measured in the acceleration measuring step;
an occupant movement characteristics determining step for determining whether or not the occupant movement characteristics exceed a predetermined movement characteristics determining threshold;
an acceleration change calculating step for calculating changes in the acceleration signal which is measured in the acceleration measuring step;
an acceleration change determining step for determining whether or not the changes in the acceleration exceeds the predetermined acceleration determining threshold;
a control signal generating step for generating a control signal for controlling an occupant-protecting apparatus according to results determined in the occupant movement characteristics determining step and the acceleration change determining step.
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7. A vehicle collision decision method having steps of:
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an acceleration measuring step for measuring an acceleration which acts on a vehicle and generating an acceleration signal;
an occupant movement characteristics calculating step for calculating occupant movement characteristics according to an acceleration signal which is measured in the acceleration measuring step;
an occupant movement characteristics determining step for determining whether or not the occupant movement characteristics exceeds a predetermined movement characteristics determining threshold;
an acceleration change calculating step for calculating changes in the acceleration signal which is measured in the acceleration measuring step;
an acceleration change determining step for determining whether or not the changes in the acceleration exceeds the predetermined acceleration determining threshold;
a frequency component analyzing step for decomposing a waveform of the acceleration signal which is generated in the acceleration measuring step into a frequency component;
a frequency component determining threshold setting step for setting a predetermined frequency component determining threshold for the frequency component according to results obtained in the occupant movement characteristics determining step and the acceleration change determining step;
a frequency component determining step for determining whether or not the frequency component exceeds the frequency component determining threshold; and
a control signal generating step for generating a control signal for controlling an occupant-protecting apparatus according to results determined in the frequency component determining step.
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Specification