Method for a Preventive-Action Protection System in a Motor Vehicle
In a method for operating a preventive-action protection system in a motor vehicle having safety devices for lessening the consequences of accidents, driving state data are monitored and with respect to a state of emergency braking. At least one of the safety devices is triggered if a state of emergency braking is determined and confirmed by a plausibility check. For the plausibility check, at least the control state of an antilock brake system and one of the brake pressure is monitored.
1 .- 8 . (canceled)
9 . A method of operating a preventive-action protection system in a motor vehicle having safety devices for lessening the consequences of accidents, said method comprising:
a driving state sensor system acquiring driving state data;
monitoring said driving state data with respect to a state of emergency braking; and
triggering at least one of the safety devices if a state of emergency braking is determined and is confirmed by a plausibility check;
wherein existence of either of a locked state of vehicle wheels and a control state of an antilock brake system is included for the plausibility checking of the state of emergency braking.
10 . The method as claimed in claim 9 , wherein the sate of emergency braking is confirmed when locking of the wheels starts or brake slip control of the antilock brake system starts.
11 . The method as claimed in claim 9 , wherein brake pressure is also evaluated for plausibility checking of the state of emergency braking.
12 . The method as claimed in claim 11 , wherein the brake pressure must exceed a brake pressure threshold for the plausibility checking by means of the brake pressure.
13 . The method as claimed in claim 12 , for a preventive-action protection system in a motor vehicle having safety devices for lessening the consequences of accidents, wherein
driving state data are acquired by means of a driving state sensor system and are monitored with respect to a state of emergency braking;
at least one of the safety devices is triggered if a state of emergency braking is determined and is confirmed by a plausibility check; and
for plausibility checking of the state of emergency braking the brake pressure must exceed a brake pressure threshold; wherein the state of emergency braking is confirmed only if the brake pressure exceeds the brake pressure threshold at a specific evaluation time after the state of emergency braking has been determined.
14 . The method as claimed in claim 13 , wherein the state of emergency braking is confirmed only if the brake pressure profile does not have a negative gradient at the specific evaluation time.
15 . The method as claimed in claim 11 , wherein:
to evaluate the brake pressure, pressure in the master brake cylinder of the brake system is measured; and
to monitor driving state data with respect to the state of emergency braking, brake pedal travel is evaluated.
16 . The method as claimed in claim 13 , wherein:
to evaluate the brake pressure, pressure in the master brake cylinder of the brake system is measured; and
to monitor driving state data with respect to the state of emergency braking, brake pedal travel is evaluated.
17 . The method as claimed in claim 15 , brake pedal travel is measured by means of one of a pedal travel sensor and a diaphragm travel sensor.
18 . The method as claimed in claim 17 , brake pedal travel is measured by means of one of a pedal travel sensor and a diaphragm travel sensor.