Radar sensor with frequency dependent beam steering
First Claim
1. An occupancy sensing system for an automotive vehicle, comprising at least one radar module for detecting the presence of an object within the vehicle interior, wherein said at least one radar module comprises an antenna system having a frequency dependent main lobe direction, wherein said occupancy sensing system comprises a control module for operating said at least one radar module at a plurality of frequencies, and wherein said occupancy sensing system is configured for determining occupancy, classification, or both, based on the motion of the object within the vehicle interior.
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Accused Products
Abstract
A radar system with frequency scanning beam steering is described for in-vehicle occupant detection and classification for seat-belt reminder functionality (SBR) and airbag suppression. The system includes an antenna system for which the main lobe direction (azimuth angle ö) is changing mostly linearly over frequency, a RF electronic transceiver electronic with at least one transmit channel and one or multiple receive channels with two outputs (I/Q) per channel. The data acquisition and signal processing/interpretation are made by a microcontroller system.
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Citations
8 Claims
- 1. An occupancy sensing system for an automotive vehicle, comprising at least one radar module for detecting the presence of an object within the vehicle interior, wherein said at least one radar module comprises an antenna system having a frequency dependent main lobe direction, wherein said occupancy sensing system comprises a control module for operating said at least one radar module at a plurality of frequencies, and wherein said occupancy sensing system is configured for determining occupancy, classification, or both, based on the motion of the object within the vehicle interior.
Specification