Iee International Electronics and Engineering S.a.

Jochen Landwehr

Oscar Gomez

Laurent Lamesch

Michael Pütz

Dimitri Tatarinov

Kais Ben Khadhra

Parth Raj Singh

Michael Virnich

Andreas Diewald

Erik Holzapfel

Peter Larsen

Alan Koehler

Muhammad-Zeeshan Khan

Daniel Ferring

Janine Cordie

Giuseppe Carenza

A method for occupancy detection for at least one vehicle seat, using at least one transmit antenna and a plurality of receive antennas, includes: emitting a detection signal with each transmit antenna onto at least one vehicle seat, which detection signal is a frequency-modulated continuous-wave radar signal, and receiving with each receive antenna a reflected signal; recording sample data representing the reflected signal, the sample data having M channels, with M=N1·N2, where N1 is the number of transmit antennas and N2 is the number of receive antennas; for each channel, removing a component from the sample data that corresponds to a reflection from a static object; and applying a frequency estimation method to the sample data to at least implicitly determine at least one angle of arrival θcorresponding to a position of an occupant on a vehicle seat.

Method for seat occupancy detection

A method of operating a radar sensor system that is configured to determine range and velocity information from radar waves reflected by a scene in an interior of a vehicle for vital sign detection. The method includes steps to decompose reflected and received signals into range and velocity information, to measure the movement over time in specified range gates and to evaluate the similarities between them. Based on the characteristics of similar behaving range bins, it can be decided whether any detected movement is related to an internal or external disturbance or by vital signs.

Method of operating a radar sensor system for vital sign detection with elimination of signals excited by interfering movements

A polarimetric radar system for object classification and road condition estimation includes a radar transmitter unit for transmitting radar waves of different polarizations, a radar receiving unit for receiving radar waves of different polarizations, a radar signal generating unit for generating and providing the radar waves to be transmitted, a signal processing circuitry for processing the generated and received radar waves, and a signal evaluation unit. The signal evaluation unit receives processed signals from the signal processing circuitry, estimates values for a set of predetermined object parameters on the basis of the received processed signals, and selects an object class from a plurality of predetermined object classes upon detecting a match of the estimated values with one out of a plurality of predetermined sets of object parameters. The signal evaluation unit is configured to provide information that is indicative of the at least one classified object.

Polarimetric radar system and method for object classification and road condition estimation in stationary applications

A capacitive sensor arrangement includes a sensing electrode having a capacitance (Cx) which depends on the presence of an object in a detection space; a measurement device connected to the sensing electrode and configured to detect the capacitance (Cx) of the sensing electrode; and a conducting structure, wherein the capacitance (Cx) of the sensing electrode depends on a potential of the conducting structure. In order to obtain a reliable capacitive measurement, the measurement device is connected to a power supply between a first potential (Vs) and a second potential (GND), the measurement device being connected to the second potential exclusively via the structure.

Capacitive sensor arrangement

A radar sensor system and a method for detecting an occupancy in an interior of a vehicle and with vital sign monitoring. The radar sensor system includes a radar transmitting unit, a radar receiving unit and a signal processing and control unit. The method includes: transmitting a radar wave towards a scene within the vehicle interior, receiving at least one radar wave that has been generated by reflection of the transmitted radar wave, decomposing the received radar wave into range, Doppler and angular information, quantifying and tracking a movement in each region of interest by angular gating and range gating, detecting and monitoring vital signs of occupants in each region of interest, and determining whether quantified and tracked movements in the scene are related to an occupant or to external or internal disturbances, based on a fulfillment of at least one predefined condition concerning the and/or the detected vital signs.

Method for robust vehicle occupancy detection with vital sign monitoring

A polarimetric radar system for detecting and classifying objects positioned in an interior of a vehicle includes a radar transmitter unit for transmitting radar waves of at least two different polarizations, a radar receiving unit for receiving radar waves of at least two different polarizations, a radar signal generating unit for generating and providing radar waves to be transmitted by the at least one radar transmitter unit, a signal processing circuitry for processing the generated radar waves and the received radar waves and a signal evaluation unit that is configured to receive processed signals from the signal processing circuitry, to estimate values for a set of predetermined object parameters on the basis of the received processed signals, and to select an object class upon detecting a match of the estimated values for the set of object parameters with one out of a plurality of predetermined sets of object parameters.

Polarimetric radar system and method for detecting and classifying vehicle occupants and other objects in a vehicle interior

A capacitive occupancy or proximity detector includes a heating circuit, an impedance measurement circuit connected to the heating element, and a diagnostic circuit configured for determining integrity of the heater element. The heating circuit includes a heating element, a heating current source and a common mode choke having a first and a second winding, the heating element being connectable to the heating current source via the first and second windings. The diagnostic circuit includes at least one controllable switching element coupled across the second winding, circuitry for injecting a DC current into a series connection formed by the first winding the heating element and a parallel connection of the second winding and the at least one controllable switching element, and at least one detection circuit for detecting a voltage variation across the second winding.

Capacitive occupancy or proximity detector

A time-of-flight imager pixel has a light-sensitive region, a first and a second integration gate associated with the light-sensitive region, a first and a second sense node, a first output gate arranged between the first integration gate and the first sense node and a second output gate arranged between the second integration gate and the second sense node, a method for operating such a pixel includes

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Trier, Germany

Jochen Landwehr