| CPC B60R 21/0136 (2013.01) [G07C 5/008 (2013.01); G07C 5/0808 (2013.01); G07C 5/0825 (2013.01); G07C 5/0833 (2013.01)] | 17 Claims |
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1. A vehicle comprising:
a primary impact detection system capable of causing a safety system to change state from a first state, the first state being a state before triggering of the safety system, to a second state, the second state being a triggered state, in response to impact; and
a secondary impact detection system comprising:
a plurality of deformation sensors associated with a panel of the vehicle, a deformation sensor of the plurality of deformation sensors configured to generate a signal in response to a deformation of the panel; and
one or more processors configured to:
receive the signal;
determine a first average of the signal associated with a first period of time;
determine, a second average of the signal associated with a second period of time longer than the first period of time;
determine, based at least in part on the first average and the second average, a metric, wherein determining the metric comprises one or more of: filtering the signal, determining a difference of the first average and the second average, or determining a ratio of the first average and the second average;
determine that the metric meets or exceeds a criterion; and
determine, based at least in part on the metric meeting or exceeding the criterion, that an impact has occurred with the vehicle,
wherein the secondary impact detection system is capable of generating an indication that an impact has occurred whilst the safety system remains in the first state.
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