Brake control system for a motor vehicle
First Claim
1. Safety system for mitigating the consequence of an accident in the case of a rear-on collision of a first vehicle by a second vehicle following the first vehicle, characterizedin that a comparison signal (SC) assigned to the positive longitudinal acceleration of the first vehicle in response to the accident is determined, in that the comparison signal (SC) is compared with a threshold value, in that, in the event that the comparison signal (SC) exceeds the threshold value, a braking signal (SB) triggering a vehicle brake is generated.
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Accused Products
Abstract
In a brake control system for mitigating the consequences of an accident in the case of a rear-on collision of a motor vehicle, it is provided that a comparison signal assigned to the positive longitudinal acceleration of the vehicle is determined, that the comparison signal is compared with a threshold value and that, in the event that the comparison signal exceeds the threshold value, a braking signal triggering the vehicle brake is generated.
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Citations
41 Claims
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1. Safety system for mitigating the consequence of an accident in the case of a rear-on collision of a first vehicle by a second vehicle following the first vehicle, characterized
in that a comparison signal (SC) assigned to the positive longitudinal acceleration of the first vehicle in response to the accident is determined, in that the comparison signal (SC) is compared with a threshold value, in that, in the event that the comparison signal (SC) exceeds the threshold value, a braking signal (SB) triggering a vehicle brake is generated.
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23. A method of mitigating the consequence of an accident in the case of a rear-on collision of a first vehicle by a second vehicle travelling behind the first vehicle, the method comprising the steps of:
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generating a comparison signal (SC) which varies according to a positive longitudinal acceleration of the first vehicle resulting from the rear-on collision;
comparing the comparison signal (SC) with a threshold value; and
generating a braking signal (SB) to trigger a vehicle brake of the first vehicle if the comparison signal (SC) exceeds the threshold value. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
measuring a distance from a third vehicle travelling in front of the first vehicle; and
setting the braking signal (SB) to a value which behaves reciprocally with respect to the distance between the first and third vehicles.
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26. The method according to claim 23, further comprising the steps of:
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measuring a distance from and relative speed in relation to a third vehicle travelling in front of the first vehicle; and
setting the braking signal (SB) to a value which prevents driving into a vehicle traveling in front of an obstacle.
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27. The method according to claim 23, comprising the step of obtaining the comparison signal (SC) from a sensors of an airbag system of the first vehicle.
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28. The method according to claim 23, comprising the step of obtaining the comparison signal (SC) from acceleration sensors at a rear of the first vehicle.
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29. The method according to claim 23, wherein the comparison signal (SC) is the positive longitudinal acceleration of the first vehicle.
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30. The method according to claim 23, comprising the step of setting of the braking signal (SB) for determining the braking force as a function of the comparison signal (SC).
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31. The method according to claim 23, further comprising the step of filtering the comparison signal (SC).
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32. The method according to claim 23, further comprising the step of generating a switch-off signal (SA) for deactivating a safety system of the first vehicle in response to a predetermined event.
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33. The method according to claim 32, further comprising the steps of:
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determining the state of a transmission of the first vehicle; and
setting the switch-off signal (SA) to a value deactivating the safety system if a reverse gear of the transmission has been engaged.
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34. The method according to claim 32, further comprising the steps of:
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determining a direction of movement; and
setting the switch-off signal (SA) to a value deactivating the safety system if the direction of movement is reverse.
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35. The method according to claim 32, further comprising the step of setting the switch-off signal (SA) to a value deactivating the safety system if the vehicle speed lies within a given bandwidth and is below a minimum speed.
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36. The method according to claim 32, further comprising the steps of:
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determining the state of a parking brake of the first vehicle; and
setting the switch-off signal (SA) to a value deactivating the safety system if the parking brake has been actuated.
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37. The method according to claim 32, comprising the step of:
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determining a speed of the first vehicle speed; and
setting the switch-off signal (SA) to a value deactivating the safety system if the vehicle speed is equal to zero.
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38. The method according to claim 32, comprising the steps of:
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determining the state of an ignition of the first vehicle;
determining the state of a parking brake of the first vehicle; and
setting the switch-off signal (SA) to a value which does not deactivate the safety system if the ignition has been switched off and the parking brake has not been actuated.
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39. The method according to claim 32, further comprising the step of setting the switch-off signal (SA) to a value which does not deactivate the safety system if an ignition of the first vehicle has been switched off and when a park position of an automatic transmission of the first vehicle is selected.
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40. The method according to claim 32, further comprising the step of setting the switch-off signal (SA) to a value which does not deactivate the safety system if an ignition of the first vehicle has been switched off and no gear of a manual transmission of the first vehicle has been engaged.
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41. The method according to claim 23, further comprising the steps of measuring the speed of a following vehicle;
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setting the braking signal (SB) is set to a value which increases with increasing of the speed of the following vehicle.
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Specification