A vehicle system includes a sensor, which may be mounted on a steel bumper, for outputting an impact signal and a processing device programmed to calculate an acceleration envelope from the impact signal, calculate a velocity envelope from the acceleration envelope, which may relate to the acceleration of an impacting object, determine a threshold value based at least in part on the vehicle speed, and compare the acceleration envelope to the threshold value. The processing device outputs a control signal to deploy a pedestrian protection countermeasure if the acceleration envelope exceeds the threshold value, distinguishing pedestrians from objects such as small animals; an alternative countermeasure may be deployed in the event of impact from a non-human object. In an example, a different threshold is used at a vehicle speed of 20 km/h than at a vehicle speed of 40 km/h.
Velocity based pedestrian sensing
2016-08-31
Patent
Electronic Resource
English
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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