How to use mmWave radar tech to sense car occupants?
Today’s vehicles require robust and reliable information about the in-cabin occupancy. Smart airbag deployment systems, air condition controls, detecting children and disabled people left behind in vehicles rely upon this information.
TI offers a reference design that explains how to create a vehicle occupant detection application, using its AWR1642 based on 77-GHz mmWave radio-frequency complementary metal-oxide semiconductor (RFCMOS) technology.
mmWave Radar Senses Car Occupants
The TIDEP-01001 reference design is built around the mmWave sensing device AWR1642 for vehicle occupant detection applications. This device integrates a 76-GHz to 81-GHz mmWave radar front end with ARM microcontroller (MCU) and TI DSP cores on a chip. The design targets the implementation of a wide, azimuth field of view (±60°), close range (3 m) sensor configuration, which can detect life forms across two regions of interest. This can be extended to multiple regions detection. The design implements algorithms for generating an azimuth-range heat map, detection, and decision for an AWR1642 device on a TI EVM module.
• Robust detection of life forms (adults, children, pets) in a vehicle.
• Generate presence heat map with an FOV of ±60 degrees.
• Source code for processing and detection based on the mmWave software development kit (SDK)
• Based on proven EVM hardware designs, enabling quick time to market and out-of-the-box demonstration.
• Radar front-end and detection configuration fully explained
• Child left behind in car detection
• Vehicle occupant detection
• Intruder detection
Click here for the reference design.