A vehicle collision detection system that includes: a controller that actuates an occupant restraint device in a case in which a collision between a vehicle and an object has been predicted by a collision prediction section, a collision mode has been determined to be an underride mode by a determination section, the object has been determined to be another vehicle by the determination section, and an acceleration detected by a first acceleration sensor is at or above an underride-mode-actuation determination threshold that is lower than a normal-actuation determination threshold for the occupant restraint device.

A collision preventing ECU 10 determines that a support performing condition is established when a relationship between a threshold and a collision index value representing emergency degree of a collision between an object and the own vehicle satisfies with a predetermined relationship. In this case, the ECU performs a collision preventing control for preventing the collision. The ECU determines whether or not the object is a continuous structure. The ECU determines whether or not a running status is a steering operation running status. The ECU changes at least one of the collision index value and the threshold such that the support performing condition becomes more difficult to be established when a specific condition that the object is determined to be the continuous structure and the running status is determined to be the steering operation running status is established than when the specific condition is not established.

A collision data storage device includes: an electronic control unit; and a storage device, wherein the electronic control unit is configured to: acquire a vehicle speed; determine a threshold value smaller when the vehicle is traveling at a low speed than when the vehicle is traveling at a high speed, and detect a collision of the vehicle when an amount of change in the vehicle speed is equal to or greater than the threshold value, and output, to the storage device, data of the collision detected by the electronic control unit, and the storage device is configured to store data of the collision.

A method for detecting impact and activating occupant protection devices, in which at least one acceleration signal from at least one acceleration sensor is compared with a triggering threshold. In this case, at least one environmental sensor for detecting an imminent impact and for determining at least one parameter of this imminent impact, in particular an expected time of impact and severity of impact, is provided. The triggering behavior is adapted on the basis of the parameters of the environmental sensor.

A vehicle safety system for helping to protect a vehicle occupant in the event of a frontal collision includes a controller, one or more crash sensors for sensing a frontal collision, and an active sensor for detecting objects in the path of the vehicle. The controller is configured to implement crash discrimination metrics that detect the occurrence of a frontal collision in response to signals received from the crash sensors. The crash discrimination metrics implement thresholds for determining whether the signals received from the crash sensors indicate the occurrence of a frontal collision. The controller is configured to implement an algorithm that uses information obtained from the active sensor to detect an object in the path of the vehicle and to select the thresholds implemented in the crash discrimination metrics in response to detecting the object.

A device for controlling personal protection apparatus in a vehicle includes: at least one sensor unit that acquires at least one physical quantity; and evaluation and control unit which (i) produces, from the at least one acquired physical quantity, at least one signal curve that characterizes an impact, (ii) determines, as a function of an energy dissipation behavior of the vehicle, at least one temporal phase in the produced signal curve, and (iii) evaluates the at least one phase for crash classification and for a triggering decision for the personal protection apparatus. The evaluation and control unit retroactively calculates at least one feature of the energy dissipation based on a characteristic time in the signal curve that represents the end of a first temporal phase.

A method for controlling restraint devices of a motor vehicle includes measuring a movement variable of the motor vehicle, triggering a first restraint device on the basis of a first predefined threshold value for the measured movement variable being exceeded, triggering a second restraint device on the basis of a second predefined threshold value for the measured movement variable being exceeded, and activating a first device influencing the restraining force of the first restraint device and a second device influencing the restraining force of the second restraint device on the basis of the first predefined threshold value and/or the second predefined threshold value being exceeded.

Systems and methods for crash determination in accordance with embodiments of the invention are disclosed. In one embodiment, a vehicle telematics device includes a processor and a memory storing a crash determination application, wherein the processor, on reading the crash determination application, is directed to obtain sensor data from at least one sensor installed in a vehicle, calculate peak resultant data based on the sensor data, where the peak resultant data describes the acceleration of the vehicle over a first time period, generate crash score data based on the peak resultant data and a set of crash curve data for the vehicle, where the crash score data describes the likelihood that the vehicle was involved in a crash based on the characteristics of the vehicle and the sensor data, and provide the obtained sensor data when the crash score data exceeds a crash threshold to a remote server system.

A vehicle collision detection system that includes: a controller that actuates an occupant restraint device in a case in which a collision between a vehicle and an object has been predicted by a collision prediction section, a collision mode has been determined to be an underride mode by a determination section, the object has been determined to be another vehicle by the determination section, and an acceleration detected by a first acceleration sensor is at or above an underride-mode-actuation determination threshold that is lower than a normal-actuation determination threshold for the occupant restraint device.

There is provided an occupant protection device for a vehicle, the occupant protection device including a side collision prediction device configured to predict a collision with a side of a host vehicle and output a prediction result including determination about whether or not the predicted collision is an inevitable collision, a physical quantity detection device configured to detect a physical quantity related to the collision with the side of the host vehicle and output a detection value of the physical quantity, an airbag device configured to expand to protect an occupant of the vehicle when the airbag device is operated, and an electronic control unit.