Patent application number | Description | Published |
20080203712 | Switch-based seat sensor for occupant presence detection - A switch-based sensor apparatus is disposed between the bottom cushion and frame of a seat. The sensor apparatus includes upper and lower rigid and generally parallel force translation plates biased apart by a set of springs, and a switch assembly. The force translation plates are joined so as to pre-load the springs while permitting closing movement between the upper and lower force translation plates in response to occupant seat force that exceeds the pre-load force of the springs. The switch assembly includes a circuit board and elastomeric switch pad defining one or more switch elements that are actuated by a prescribed closing movement between the upper and lower force translation plates for electrically detecting the presence of a seat occupant. | 08-28-2008 |
20090033078 | Dual function capacitive sensor for seat occupant detection - A dual function capacitive occupant detection sensor includes a capacitive load cell disposed below a seat cushion, an electric field emitter disposed above the seat cushion and a capacitance-responsive control circuit. The control circuit determines a seated weight of an occupant based on the load cell capacitance, and a coupling of the electric field through an occupant based on the capacitance between the electric field emitter and the vehicle ground. The measured seated weight and electric field coupling parameters are logically combined to detect an occupant and to distinguish between a normally seated occupant and a cinched down infant or child seat of similar apparent weight. | 02-05-2009 |
20090218159 | Vehicle Pedestrian Impact Sensor With Proximity Arming - A pedestrian impact sensor system includes a first plate and a second plate both connected to an outer surface of a vehicle such that a capacitance between the first plate and the second plate is dependent upon whether a body proximate the vehicle is animate. A crush sensor senses a force exerted by the body on the vehicle. A monitoring circuit monitors the capacitance between the first plate and the second plate and an output signal of the crush sensor. The monitoring circuit issues a safety countermeasure signal dependent upon the capacitance between the first plate and the second plate and the output signal of the crush sensor. | 09-03-2009 |
20090299632 | Vehicle Pre-Impact Sensing System Having Signal Modulation - A vehicle pre-impact sensing system is provided that includes an array of energy signal transmitters mounted on a vehicle for transmitting signals within multiple transmit zones spaced from the vehicle and an array of receiver elements mounted on the vehicle for receiving signals reflected from an object located in one or more multiple receive zones indicative of the object being in certain one or more zones. A processor processes the received reflected signals and determines range, location, speed and direction of the object, determines whether the object is expected to impact the vehicle as a function of the determined range, location, speed and direction of the object, and generates an output signal indicative of a pre-impact event. The system may detect one or more features of a target object, such as a front end of a vehicle. Additionally, the system may modulate the transmit beams. Further, the system may perform a terrain normalization to remove stationary items. | 12-03-2009 |
20100025974 | Apparatus for allowing or suppressing deployment of a low risk deployment airbag - A low-cost automatic suppression apparatus allows or suppresses deployment of a low risk deployment airbag based solely on occupant seat load and seat belt tension. The seat load and belt tension parameters are detected by low-cost sensors, and an airbag control unit suppresses airbag deployment when the occupant load is below a specified load threshold or the belt tension is above a specified tension threshold, and otherwise allows airbag deployment. The sensors are preferably switch-based so that the signals provided to the airbag control unit are in the form of a differential electrical current, and only two wires are needed to interface each sensor to the airbag control unit. | 02-04-2010 |
20100095787 | Determining seat belt tension in a motorized seat belt apparatus - A method and apparatus is provided for determining seat belt tension in a seat belt system. The apparatus includes webbing and a motor coupled to the webbing for retracting the webbing and generating a seat belt tension. When the seat belt apparatus is deployed to restrain an occupant, the tension on the seatbelt is monitored by applying a voltage to the motor to retract the webbing, measuring an electrical current during the application of the voltage, determining a maximum value of the electrical current and determining the seat belt tension based upon the maximum value. | 04-22-2010 |
20100148948 | VEHICLE LANE DEPARTURE WARNING SYSTEM AND METHOD - A vehicle lane departure warning system and method are provided. The system includes a position sensor for sensing position of a vehicle and memory storing learned vehicle path data. The system further includes a controller for processing the position data and determining a stored learned vehicle path that the vehicle is travelling on. The controller comprises logic for comparing the sensed position data to the stored learned vehicle path and determining if the vehicle is sufficiently departing from the stored learn vehicle path. The system further includes an output for providing a warning signal indicative of the vehicle departing from the stored learned vehicle path. The stored learned vehicle path is updated as the vehicle repeatedly travels on the path. | 06-17-2010 |
20100152949 | VEHICLE EVENT RECORDING SYSTEM AND METHOD - A vehicle event recording system is provided which includes one or more GPS receivers for sensing position of a vehicle, and an event detector for detecting a vehicle event. The recording system includes memory for storing vehicle path data and an input for receiving site data at a location where the vehicle event is detected. The recording system further includes a processor for determining a vehicle path for a time period close in time to the vehicle event. The processor determines a correction vector based on site measurement data and further determines the corrected vehicle path based on the monitored vehicle path and the correction vector and generates an output. | 06-17-2010 |
20100152967 | OBJECT DETECTION SYSTEM WITH LEARNED POSITION INFORMATION AND METHOD - An object detection system and method of detecting objects and providing an output signal are provided. The system includes a position sensor for sensing position of a host vehicle, and an object detector provided on the host vehicle for detecting presence of an object relative to the host vehicle and for further detecting position of the detected object relative to the host vehicle. The system also includes a controller for processing the sensed position of the host vehicle and determining a current vehicle path as the host vehicle moves. The controller further processes the position of a detected object relative to the host vehicle and determines if the detected object is a stationary object relative to ground. The system further includes memory for storing the position of the detected stationary object and an output for providing an output signal based on the detected stationary object relative to the current vehicle path. | 06-17-2010 |
20100192698 | SEAT SENSOR APPARATUS FOR OCCUPANT PRESENCE DETECTION - An occupant presence sensor apparatus disposed in a seat includes first and second substantially non-compliant force translation plates generally parallel to the seating surface of the seat, an elastomeric mat disposed between the first and second force translation plates, and a switch mechanism disposed between the first and second force translation plates within an opening formed in the elastomeric mat. The elastomeric mat includes a distributed array of hollow protuberances that extend toward and contact the force translation plates, and the mat has a stiffness that normally provides a clearance between the switch mechanism and one of the force translation plates. When an occupant of specified or higher weight sits on the seating surface, the protuberances collapse and the force translation plates activate the switch mechanism. | 08-05-2010 |
20110163767 | OCCUPANT DETECTION SYSTEM AND METHOD - An occupant detection system and method are provided. The system includes a capacitive sensor having an electrode arranged in a seat proximate to an expected location of an occupant for sensing an occupant presence approximate thereto. The capacitive sensor is configured to provide an output indicative of the sensed occupant presence. The system also includes a force sensor arranged within the seat providing an output indicative of a sensed force applied to the seat. The system further includes occupant detection circuitry for processing the capacitive sensor output and force sensor output and detecting a state of occupancy of the seat based on the capacitive sensor output and the force sensor output. | 07-07-2011 |
20120286813 | WINDSHIELD MOISTURE DETECTOR - A system, controller, and method for detecting moisture on a windshield that uses an isolated electrode coupled to a windshield. The isolated electrode is configured to exhibit an electrical impedance indicative of moisture present on a surface the windshield. The controller is configured to determine an electrode impedance value corresponding to the electrical impedance exhibited by the isolated electrode for detecting moisture on the windshield. By using an isolated electrode, the system is simpler and less expensive than other systems that have at least one electrode providing a return path for another electrode. Also, a way to use the isolated electrode for both detecting moisture on the windshield, and heating the windshield is described. | 11-15-2012 |
20130325256 | NON-CONTACT GESTURE RECOGNITION SYSTEM AND METHOD - A non-contact gesture recognition system for recognizing gestures made by an occupant of a vehicle using a first multiple-zone temperature sensor equipped with an array of temperature sensors. The sensor outputs an array signal indicative of a zone temperature for each of a plurality of zones within the vehicle. The array may be oriented such that a sample direction on the array arising from the gesture is characterized as diagonal. The sensor may include a multi-focal length Fresnel lens panel formed of a plurality of Fresnel lens elements having various focal lengths. | 12-05-2013 |
20140049272 | DUAL ELECTRODE OCCUPANT DETECTION SYSTEM AND METHOD - A dual-electrode occupant detection system configured to determine an occupant presence on a seat assembly. The system includes two electrodes that each generates an electric field in response to an applied excitation signal. The two electrode signals arising therefrom can be measured individually and/or combined to detect more reliably an occupant. Such a configuration advantageously avoids the added expense and complication of an electrode arrangement that relies on an underlying shield layer to reduce electrode signal degradation caused by a seat heater element. | 02-20-2014 |