Method and apparatus for activating a crash countermeasure using a transponder having various modes of operation
First Claim
1. A method of communicating between a first vehicle and a second vehicle comprising:
- generating a cruise control signal from a first vehicle;
detecting said cruise control signal at the second vehicle from the first vehicle;
generating a second vehicle data signal from the second vehicle in response to the cruise control signal using a communication signature;
generating a first vehicle data signal from the first vehicle in response to the second vehicle data signal using the communication signature; and
activating a first countermeasure in the first vehicle in response to the second vehicle data signal.
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Abstract
A method and system for sensing a potential collision of a first vehicle (11) with a second vehicle (72) is disclosed. The first vehicle generates a data signal in response to an urgent event, a transponder signal from a second vehicle (72) or from an adaptive cruise control signal from the first vehicle. The first vehicle data signal includes a first position signal corresponding to a position of the vehicle and sensor signals from the first vehicle. The second vehicle (72) receives the data signal and determines a distance and vehicle trajectory from the vehicle data, the sensor signals and the position signals. A countermeasure is activated in response to the trajectory and the distance.
27 Citations
16 Claims
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1. A method of communicating between a first vehicle and a second vehicle comprising:
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generating a cruise control signal from a first vehicle;
detecting said cruise control signal at the second vehicle from the first vehicle;
generating a second vehicle data signal from the second vehicle in response to the cruise control signal using a communication signature;
generating a first vehicle data signal from the first vehicle in response to the second vehicle data signal using the communication signature; and
activating a first countermeasure in the first vehicle in response to the second vehicle data signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for communicating between a first vehicle and a second vehicle comprising:
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generating a first vehicle data signal from the second vehicle in response to a cruise control signal using a communication signature;
generating a second vehicle data signal from the first vehicle in response to the first vehicle data signal using the communication signature;
determining a threat level in response to the first data signal and the second data signal; and
continuing generating the first vehicle data signal and generating the second vehicle data signal when the threat level is above a threshold. - View Dependent Claims (8, 9, 10, 11)
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12. A method for operating a pre-crash sensing system for a first vehicle proximate a second vehicle comprising:
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generating a first vehicle data signal from a first transponder in response to an adaptive cruise control signal;
sad first vehicle data signal including a first position signal corresponding to a position of the first vehicle and sensor signals from the first vehicle;
receiving a second position signal from the second vehicle;
determining a distance to the second vehicle in as a function of the second position signal; and
determining a first vehicle trajectory from said first vehicle data signal, said sensor signals, and said position signal. - View Dependent Claims (13, 14, 15, 16)
activating a counter-measure system in response to the trajectory and distance.
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14. A method as recited in claim 12 further comprising when the distance is below a first threshold and above a second threshold, activating a second display.
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15. A method as recited in claim 12 wherein generating a vehicle data signal comprises generating a vehicle type signal, a vehicle weight signal or a vehicle size signal.
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16. A method as recited in claim 12 wherein generating a first position signal corresponding to a position of the first vehicle comprises generating the first position signal corresponding to a position of the first vehicle from a global positioning system.
Specification