Abstract:
A method (600) and a system for assisting a vehicle operator (52) to parallel park a vehicle (10). The method (600) and system use only a single proximity sensor (24) to detect a suitable parallel parking space (36) and monitor the position of the vehicle (10) when backing into the parallel parking space (36). Assistance to parallel park the vehicle (10) may be as little as providing indications or warning to a vehicle operator (52) while the vehicle operator (52) backs the vehicle (10) into the parallel parking space (36), or may be as much as taking complete control of the vehicle (10) away from the vehicle operator (52), and autonomously parallel parking the vehicle (10).
Abstract:
A multiple-axis sensor package (20) and method of assembling a multiple-axis sensor package (20) arc provided. The package (20) includes a first substrate (30) having a first accelerometer (32) for sensing acceleration (A x ) in a first sensing axis (X-axis). The package (20) also includes a second substrate (40) having a second accelerometer (42) for sensing acceleration (A y ) in a second sensing axis (Y-axis). The package (20) further includes one or more bent lead connectors (90) connecting the first substrate (30) to the second substrate (40), wherein the one or more bent lead connectors (90) are bent so that the first sensing axis (X-axis) is different than the second sensing axis (Y-axis).
Abstract:
A vehicle crash sensing system (20) and method are provided for sensing a vehicle crash event. The system (20) includes a linear acceleration sensor (22) located on a vehicle (10) for sensing linear acceleration (A Y ) along a first sensing axis (Y) and generating a linear acceleration signal. The system (20) has linear crash sensing logic (50) for determining a crash event along the first sensing axis (Y) as a function of the sensed linear acceleration. The system (20) also has signal processing circuitry (26) for processing the linear acceleration signal and generating a processed linear acceleration signal. The system (20) has an angular rate sensor (32) located on the vehicle (10) for sensing an angular roll rate ( φ̇ x ) of the vehicle (10) about a second sensing axis (X) and generating a roll rate signal. The system (20) further includes rollover crash sensing logic (70) for determining a rollover event of the vehicle (10) about the second sensing axis (X) as a function of the processed linear acceleration signal and the roll rate signal.
Abstract:
A system (10), controller (24), and method (200) for aligning a stereo camera (20) of a vehicle (14) mounted object detection system (10) that includes a first camera (20) and a second camera (22) mounted spaced apart on a vehicle (14). An image from each camera (20) at two different times is used to determine an observed displacement (60) of an object (12) relative to the vehicle (14). A predicted displacement (62) of the object (12) relative to the vehicle (14) is also determined using either a difference of vehicle (14) position measured based on other vehicle (14) measurements or GPS, or a difference of size of the object (12) in images taken at the two different times. Alignment is provided by determining a triangulation correction based on a difference of the observed displacement (60) and the predicted displacement (62) to correct for misalignment of the cameras.
Abstract:
A vehicle rollover detection apparatus and method are provided for detecting an overturn condition of the vehicle. The rollover detection apparatus includes an angular rate sensor (12) sensing angular rate of the vehicle, and a vertical accelcrometer (14) for sensing vertical acceleration of the vehicle. A controller (20) processes the sensed angular rate signal and integrates it to produce an attitude angle. The vertical acceleration signal is processed to determine an inclination angle of the vehicle. The rollover detection apparatus adjusts the attitude angle as a function of the inclination angle and compares the adjusted attitude angle and the processed angular rate signal to a threshold level to provide a vehicle overturn condition output signal. Additionally, the rollover detection apparatus detects a near-rollover event and adjusts the variable threshold in response thereto to prevent deployment of a vehicle overturn condition, thus providing immunity to such events.
Abstract:
A method (600) and a system for assisting a vehicle operator (52) to parallel park a vehicle (10). The method (600) and system use only a single proximity sensor (24) to detect a suitable parallel parking space (36) and monitor the position of the vehicle (10) when backing into the parallel parking space (36). Assistance to parallel park the vehicle (10) may be as little as providing indications or warning to a vehicle operator (52) while the vehicle operator (52) backs the vehicle (10) into the parallel parking space (36), or may be as much as taking complete control of the vehicle (10) away from the vehicle operator (52), and autonomously parallel parking the vehicle (10).
Abstract:
A supplemental restraint deployment method utilizes measured vehicle speed (16) and acceleration (14) and the output of a closing velocity sensor (18) that detects the presence and closing rate of an approaching object prior to contact with the vehicle (10). The closing velocity and vehicle speed are utilized for classification of an impending crash event (40-54), where the deployment options vary depending on the crash classification. In the ensuing crash event, a classification-dependent algorithm (56/60-74/90-122) is executed to determine if, when and what level of restraint deployment is warranted based on measures of actual crash severity. Additionally, the algorithm is reset when the calculated change in vehicle velocity reaches the initial closing velocity (64-65/94-95).