Patent ID: 8564423

Claim:
A system on a vehicle for activating a pedestrian protection device comprising: a first sensor coupled to a fascia of the vehicle and adapted to detect a collision with an object and output a first signal; a second sensor coupled to the fascia spaced apart from the first sensor, said second sensor adapted to detect a collision with an object and output a second signal; and a controller configured to receive the first signal from the first sensor and the second signal from the second sensor, determine a minimum threshold set and a maximum threshold set based on the first signal and the second signal, and activate the pedestrian protection device if either the first signal or the second signal is greater than a threshold of the minimum threshold set and less than a threshold of the maximum threshold set, wherein the controller is further configured to determine a first acceleration value, a first displacement value, and a first velocity value based on the first signal, and determine a second acceleration value, a second displacement value, and a second velocity value based on the second signal, wherein the controller is further configured such that if the first sensor displacement value is greater than the second sensor displacement value, the first sensor is designated as a primary sensor, the first acceleration value is designated as a primary acceleration value, the first displacement value is designated as a primary displacement value, the first velocity value is designated as a primary velocity value, the second sensor is designated as a secondary sensor, the second acceleration value is designated as a secondary acceleration value, the second displacement value is designated as a secondary displacement value, and the second velocity value is designated as a secondary velocity value; and if the first sensor displacement value is less than or equal to the second sensor displacement value, the first sensor is designated as a secondary sensor, the first acceleration value is designated as a secondary acceleration value, the first displacement value is designated as a secondary displacement value, the first velocity value is designated as a secondary velocity value, the second sensor is designated as a primary sensor, the second acceleration value is designated as a primary acceleration value, the second displacement value is designated as a primary displacement value, and the second velocity value is designated as a primary velocity value.