System for controlling the deployment of an external safety device
First Claim
Patent Images
1. A vehicle safety system comprising:
- an external safety system configured to protect a pedestrian in a field of view, and a device including an electronic control module configured to activate the external safety system the device being connected to a pre-crash sensor system configured to detect an object and an in-crash sensor system;
the device being configured to perform an object classification of a first signal from the pre-crash sensor system, wherein the object classification is based on a value generated as a function of the first signal generated by the pre-crash system;
wherein when the value is between a first threshold and a nominal threshold, the object is classified as a pedestrian, wherein when the value is between a second threshold and the nominal threshold the object is classified as a non-pedestrian, wherein the nominal threshold is greater than the first threshold and less than the second threshold;
the device being configured to set the first threshold, the first threshold being equal to a value generated as a function of a signal produced when the object is a pedestrian;
the device is configured to set a second threshold, the second threshold being equal to a value generated as a function of a signal produced when the object is a non-pedestrian;
wherein the nominal threshold is a stored threshold that is utilized by the electronic control module when no input is available from the sensor systems;
the device is configured to interpolate the set first or second threshold between the nominal threshold and a threshold limit value as a function of a probability of an accurate classification for the first signal;
the device is configured to compare a second signal from the in-crash sensor system with the set first or second threshold, whereby the external safety system is activated when the set first or second threshold is exceeded;
wherein the field of view is forward of a vehicle having the vehicle safety system and is split into two or more zones that radiate radially from a forward end of the vehicle; and
the device is configured to determine first and second thresholds for each zone as a function of a first signal from the pre-crash sensor system.
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Abstract
A vehicle safety system having an external safety system for protecting a pedestrian, and a device for activating the external safety system the device being connected to a pre-crash sensor system (10, 11) and an in-crash sensor system (16). The device is arranged to perform an object classification of a first signal from the pre-crash sensor system and to determine a threshold (T1, T2) for the in-crash sensor system as a function of the object classification.
13 Citations
35 Claims
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1. A vehicle safety system comprising:
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an external safety system configured to protect a pedestrian in a field of view, and a device including an electronic control module configured to activate the external safety system the device being connected to a pre-crash sensor system configured to detect an object and an in-crash sensor system; the device being configured to perform an object classification of a first signal from the pre-crash sensor system, wherein the object classification is based on a value generated as a function of the first signal generated by the pre-crash system; wherein when the value is between a first threshold and a nominal threshold, the object is classified as a pedestrian, wherein when the value is between a second threshold and the nominal threshold the object is classified as a non-pedestrian, wherein the nominal threshold is greater than the first threshold and less than the second threshold; the device being configured to set the first threshold, the first threshold being equal to a value generated as a function of a signal produced when the object is a pedestrian; the device is configured to set a second threshold, the second threshold being equal to a value generated as a function of a signal produced when the object is a non-pedestrian; wherein the nominal threshold is a stored threshold that is utilized by the electronic control module when no input is available from the sensor systems; the device is configured to interpolate the set first or second threshold between the nominal threshold and a threshold limit value as a function of a probability of an accurate classification for the first signal; the device is configured to compare a second signal from the in-crash sensor system with the set first or second threshold, whereby the external safety system is activated when the set first or second threshold is exceeded; wherein the field of view is forward of a vehicle having the vehicle safety system and is split into two or more zones that radiate radially from a forward end of the vehicle; and the device is configured to determine first and second thresholds for each zone as a function of a first signal from the pre-crash sensor system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A device including an electronic control unit configured to activate an external safety system for protecting a pedestrian in a field of view, the device being connected to a pre-crash sensor system configured to detect an object and an in-crash sensor system, comprising the device configured:
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to perform an object classification of a first signal from the pre-crash sensor system, wherein the object classification is based on a value generated as a function of the first signal, wherein when the value is between a first threshold and a nominal threshold the object is classified as a pedestrian, wherein when the value is between a second threshold and the nominal threshold the object is classified as a non-pedestrian, wherein the nominal threshold is greater than the first threshold and less than the second threshold; to set the first threshold indicating, the first threshold being equal to a value generated as a function of a signal produced when the object is a pedestrian; to set the second threshold, the second threshold being equal to a value generated as a function of a signal produced when the object is a pedestrian; wherein the nominal threshold is a stored threshold that is utilized by the electronic control unit when no input is available from the sensor systems; to interpolate the set first or second threshold between the nominal threshold and a threshold limit value as a function of a probability of accurate classification for the first signal; to compare a second signal from the in-crash sensor system with the set first or second threshold, the device being activated when the set first or second threshold is exceeded; wherein the field of view is forward of a vehicle having the vehicle safety system and is split into two or more zones that radiate radially from a forward end of the vehicle; and the device is configured to determine individual first and second thresholds for each zone as a function of a first signal from the pre-crash sensor system. - View Dependent Claims (19, 20, 21, 22)
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23. A method for activating an external safety system for protecting a pedestrian in a field of view which system of a type having a device including an electronic control unit for activating the external safety system, the device being connected to a pre-crash sensor system and an in-crash sensor system and being arranged to perform an object classification of a first signal from the pre-crash sensor system configured to detect an object, the method comprising the steps of:
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performing an object classification of a first signal from the pre-crash sensor system, wherein the object classification is based on a value generated as a function of the first signal, wherein when the value is between a first threshold and a nominal threshold the object is classified as a pedestrian, wherein when the value is between a second threshold and the nominal threshold the object is classified as a non-pedestrian; wherein the nominal threshold is greater than the first threshold and less than the second threshold and is a stored threshold that is utilized by the electronic control unit when no input is available from the sensor system; setting the first threshold, the first threshold being equal to a value generated as a function of a signal produced when the object is a pedestrian; setting the second threshold, the second threshold being equal to a value generated as a function of a signal produced when the object is a pedestrian; interpolating the set value between the nominal threshold and a threshold limit value as a function of a probability of accurate classification for the first signal; comparing a second signal from the in-crash sensor system with the first or second threshold, and activating the device when the set first or second threshold is exceeded; using an external safety system comprising the field of view that is forward of a vehicle having the vehicle safety system and is split into two or more zones that radiate radially from a forward end of the vehicle, each provided with a pre-crash sensor system, and performing an object classification of the first signal from the pre-crash sensor system; and determining an individual first or second threshold for each zone, as a function of the first signal from the pre-crash sensor system. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification