Patent application number | Description | Published |
20080259729 | Method of characterizing a vehicle crash event based on shear waves in the vehicle frame - A vehicle crash event is detected and characterized based on the transmission of acoustical shear waves through the vehicle frame. At least three, and preferably four or more, acoustical emission sensors longitudinally and laterally distributed on the vehicle frame produce acoustical signals that are processed to extract the shear wave energy due to impacts. Since shear waves are non-dispersive and travel through the vehicle frame at a known velocity, they can be detected in any part of the frame. The extracted shear wave signals are used not only to judge the severity of the impact, but also to characterize the type of crash and determine the direction of the impact based on when the shear wave is detected by each of the acoustical emission sensors. | 10-23-2008 |
20090267622 | System and method for detecting an object at a location - An occupancy detection system includes a signal generator coupled to an electrode, the signal generator configured to output a first signal at a first frequency and a second signal at a second frequency. The system further includes a voltage detection circuit connected to an output terminal of the signal generator and to an input terminal of the electrode, wherein the voltage detection circuit is configured to measure a first voltage responsive to the first signal at the first frequency and a second voltage responsive to the second signal at the second frequency. A control module in communication with the voltage detection circuit is configured to detect a state of occupancy based on the first voltage and the second voltage. | 10-29-2009 |
20090271076 | Occupant Detection System with Environmental Compensation - An occupant detection system includes an electrode in communication with a detector circuit that detects the impedance of the electrode and compensates for environmental conditions, such as humidity or moisture, based on the impedance measurement. Such environmental conditions may interfere with the occupant detection system's ability to detect the presence and/or size of an occupant. Typically, environmental conditions change the impedance of the electrode. The impedance is determined by measuring a frequency response of the electrode. The measured frequency response is compared to predetermined frequency response values that correspond to known environmental conditions. The environmental condition may be detected by matching the peak frequency response or average frequency response to in a lookup table. | 10-29-2009 |
20090295199 | Seat Assembly Having Seat Heating and Occupant Detection - A seat assembly including a seat cushion, a heating element, a heating circuit, a occupant sensing circuit, and an isolation circuit. The seat cushion has a seating surface, the heating element is adjacent the seating surface and is formed of electrically conductive material. The heating circuit is coupled to the heating element for supplying electrical current to the heating element for generating heat. The occupant sensing circuit is also coupled to the heating element for sensing the presence of an occupant near the heating element. The isolation circuit is interposed between the heating circuit and the heating element for isolating the heating circuit from the occupant sensing circuit. | 12-03-2009 |
20090295412 | Occupant Detector with Electronic Interference Compensation - A occupant detection system includes an electronic device in communication with a sensor. The system detects an occupant by way of measuring an impedance of an electric field emitted by the sensor. The electronic device is configured to acquire data values from an output signal of the sensor, and reduce the effect of transient electrical interference on the acquired data values and adapt for sustained electrical interference on the acquired data values. A method includes acquiring a new data value, determining whether the new data value represents transient interference, and capturing the new data value if the new data value is free of transient interference and rejecting the new data value if the new data value represents transient interference. | 12-03-2009 |
20100007184 | Seat assembly for sensing an occupant - A seat assembly is provided that can be sat upon by an occupant that detects the weight of the occupant. The seat assembly includes a seat cushion, a rotary sensor, and a linkage having a tip. The seat cushion deforms in response to the weight. The rotary sensor has a shaft that rotates about an axis and has an electrical output that is proportional to the angle of rotation of the shaft. The linkage underlies the seat surface and connects the seat surface to the shaft of the rotary sensor. As weight is placed on the seat the seat cushion deforms in response to the weight moving the tip and the linkage. The movement of the linkage rotates the shaft, which in turn, provides an electrical output that is proportional to the weight. | 01-14-2010 |
20110121996 | Method and System for Detecting an Occupant Using Reflected Signals - An occupant detection system emits an ultrasonic signal for detecting the presence of an occupant by reflecting the signal off the occupant and then determines that an occupant is present by detecting motion of the occupant. One type of motion that is detected is the small rhythmic motion associated with respiration. The motion detection system improves detection of motion smaller than a wavelength of the ultrasonic signal by shifting the wavelength of the ultrasonic signal to increase the detected motion signal. The system may also determine the presence of an occupant by comparing the motion signal to a motion pattern that corresponds to respiration. | 05-26-2011 |
20110133755 | System and Method of Occupant Detection with a Resonant Frequency - An occupant detection system that includes an electrode, an electrical network, and a controller. The electrode is arranged to be proximate to an expected location of an occupant for sensing an occupant presence proximate the location. The electrode is configured to provide an electrode impedance indicative of the occupant presence. The electrical network is coupled to the electrode to form a resonant circuit and is configured to provide a network impedance. The resonant circuit is configured to exhibit a resonant frequency dependent on the network impedance and the electrode impedance. The controller is coupled to the resonant circuit and is configured to determine the resonant frequency and detect an occupant based on the resonant frequency. | 06-09-2011 |
20110133914 | IMAGE BASED VEHICLE OBJECT DETECTION SENSOR WITH RANGE FINDER - An image based object detection system and method having a range finder are provided. The system includes an illuminator located on a vehicle to generate an illumination beam in a coverage zone relative to the vehicle. The system also includes an optics device spaced from the illuminator for collecting reflected illumination from one or more objects in the coverage zone and an imager comprising an array of pixels for receiving images from the coverage zone via the optics device. The imager captures images from the coverage zone and the collected reflected illumination from the objects in the coverage zone. The system further includes a processor for processing the received images and the reflected illumination signals. The processor determines range to an object in the coverage zone based on a location of the pixels in the imager detecting the reflected illumination. | 06-09-2011 |
20110241895 | OBJECT DETECTION SYSTEM AND METHOD USING SUB-SAMPLING - An object detection system, controller, and method using sub-sampling for detecting a presence of an object at the location. An electrode arranged near the location radiates an electric field that corresponds to an electrode signal that arises in response to an excitation signal. When the excitation signal is coupled to the electrode and the electric field is radiated, the electrode exhibits an electrode impedance indicative of the presence of an object. The presence of an object is detected by analyzing the electrode signal using sub-sampling. Traditionally, such electrode signals have frequencies, high enough to warrant the use of expensive high-frequency signal processing devices. Sub-sampling is a way of sampling and processing the electrode signal such that the signal processing to detect the object can be performed by a lower cost general purpose microprocessor. | 10-06-2011 |
20110307148 | OCCUPANT DETECTION SYSTEM AND METHOD HAVING HEATER ELEMENT ELECTRICAL ISOLATION - A system for determining an occupant proximate to a vehicle seat, a controller for use in the system, and a method for electrically isolating a heater element from an occupant detection electrode. When a heater element in a seat is coupled to a heater voltage source to generate heat, the heater element may influence an electric field generated by an occupant detection electrode in such a way as to interfere with determining an occupant proximate to the seat. Depending on the arrangement of the electrode and the heater element, such interference may be present at all times when the electrode is connected to the heater voltage source, or may only be problematic when the seat is wet with liquid moisture. By electrically isolating the heater element, the influence on the electric field may be reduced so the process of determining if an occupant is present in the seat is not interfered with. | 12-15-2011 |
20120104812 | WEIGHT BASED VEHICLE SEAT OCCUPANT DETECTION DEVICE - A device configured to be installed in a vehicle seat for estimating an occupant weight. The device includes a bladder and a pressure sensor. The bladder is configured to define a cavity characterized as having a center of gravity. The bladder is effective to retain a fluid and pressurize the fluid in response to an occupant weight upon the bladder. The bladder is also configured to define an opening to the cavity. The pressure sensor is coupled directly to the opening in a manner effective to seal the opening and locate the pressure sensor proximate to the center of gravity. The pressure sensor provides a pressure signal indicative of the occupant weight. | 05-03-2012 |
20120105241 | WEIGHT BASED VEHICLE SEAT OCCUPANT DETECTION DEVICE WITH COMPENSATION FOR SEAT ORIENTATION ANGLE - A weight based occupant detection device that includes a weight sensing device installed in a vehicle seat in a manner effective to sense weight on a seating surface. The weight sensing device is configured to output a weight signal indicative of an occupant weight of a seat occupant residing on the vehicle seat. The occupant detection device also includes a seat orientation angle sensing device that is configured to output an orientation angle signal indicative of a seat orientation angle. The occupant detection device may also include an accelerometer for sensing vertical acceleration of the vehicle seat, and a seat backrest angle device for measuring the angle of the seat backrest. The occupant detection device compensates a signal from the weight sensing device for errors caused by seat orientation, seat vertical acceleration and seat backrest angle. | 05-03-2012 |
20120319701 | System and Method of Occupant Detection with a Resonant Frequency - An occupant detection system that includes an electrode arranged proximate to an expected location of an occupant for generating an electric field between the electrode and the occupant proximate thereto. An electrical network coupled to the electrode forms a resonant circuit that includes the occupant as part of the resonant circuit. A controller coupled to the resonant circuit is configured to determine a resonant frequency of the resonant circuit indicative of an occupant presence, and a network signal magnitude at the resonant frequency indicative of a humidity value proximate to the electrode. | 12-20-2012 |
Patent application number | Description | Published |
20100233503 | PANEL FOR A STORAGE CONTAINER - A panel for a storage container, such as a trailer, for example, includes a first, generally planar layer and a second layer coupled to the first layer. The second layer is configured to define a plurality of channels therein. | 09-16-2010 |
20110260500 | ROOF ASSEMBLY FOR STORAGE CONTAINER - A roof assembly for a storage container, such as a truck trailer, includes a sheet having a plurality of laterally-extending corrugations formed therein. Illustratively, each corrugation is configured to progressively flatten outwardly from a longitudinal centerline of the roof assembly towards an outer end of the sheet. The longitudinal centerline of the roof assembly extends perpendicular to each corrugation. The outer end of the sheet is configured to be coupled to a sidewall of the truck trailer. | 10-27-2011 |
20120169087 | FIBER-REINFORCED FLOOR SYSTEM - A floor system configured for use with a storage container such as a trailer. The floor system includes an upper floor section including a plurality of upper floor boards made of glass fiber reinforced polymer, and a lower floor section including a plurality of lower floor boards made of glass fiber reinforced polymer. The upper floor boards are configured to extend along a length of the trailer and the lower floor boards are configured to extend across the width of the trailer. | 07-05-2012 |
20130020831 | INNER WALL LINER FOR A REFRIGERATED TRAILER WALL PANEL - An inner wall liner of a wall panel of a refrigerated trailer includes a liner sheet formed of fiber reinforced plastic (FRP) and a scuff plate formed of FRP. The scuff plate and the liner sheet are fused together such that the scuff plate is coupled to a bottom portion of the liner sheet. The inner liner further includes an upper wall plate formed of FRP. The upper wall plate and the liner sheet are fused together such that the upper wall plate is coupled to an upper portion of the liner sheet. | 01-24-2013 |
20130125491 | WALL PANEL STRUCTURE FOR A REFRIGERATED TRAILER - A sidewall for a refrigerated trailer includes a plurality of wall panels configured to extend along a horizontal length of the trailer. Each wall panel includes an outer wall member, an inner wall member spaced-apart from the outer wall member, and a foam core coupled to and extending between the inner and outer wall members. | 05-23-2013 |