Vehicle occupant detection reference design


Design files


This reference design demonstrates the use of the AWR6843 60GHz single-chip mmWave sensor with integrated DSP, as a Vehicle Occupant Detection (VOD) and Child Presence Detection (CPD) Sensor enabling the detection of life forms in a vehicle. This design provides a reference software processing chain which runs on the C674x DSP, enabling the generation of a heat map to detect occupants in a Field of View (FOV) of ±60 degrees.

 Watch Vehicle Occupant Detection using mmWave Sensors Video.

Additional information

Reference software processing chain to detect the occupants inside a car using radar.

  • Demonstration of mmWave sensor technology for robust detection of occupants (adults, children, pets) in a vehicle
  • Generate presence heat map with FOV of ±60 degrees
  • Source code for processing and detection based on 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
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Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUE95A.PDF (2035 K)

Reference design overview and verified performance test data

SWRR164C.ZIP (73375 K)

Detailed schematic diagram for design layout and components

SWRC355C.ZIP (121397 K)

Design file that contains information on physical board layer of design PCB


Includes TI products in the design and potential alternatives.

Analog switches & muxes

TMUX15745-V, 2:1 (SPDT), 4-channel analog switch with powered-off protection & 1.8-V input logic

Data sheet: PDF | HTML
Analog switches & muxes

TS3A50183.3-V, 2:1 (SPDT), 4-channel general-purpose analog switch

Data sheet: PDF | HTML
Arm Cortex-M4 MCUs

TM4C1294NCPDT32-bit Arm Cortex-M4F based MCU with 120-MHZ, 1-MB flash, 256-KB RAM, USB, ENET MAC+PHY

Data sheet: PDF
Automotive mmWave radar sensors

AWR6843Single-chip 60-GHz to 64-GHz automotive radar sensor integrating DSP, MCU and radar accelerator

Data sheet: PDF | HTML
CAN transceivers

TCAN1042HGV-Q1Automotive Fault Protected CAN Transceiver With Flexible Data-Rate

Data sheet: PDF | HTML
Digital temperature sensors

TMP112±0.5°C 1.4V to 3.6V digital temperature sensor with I2C/SMBus in 2.56mm2 package

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS7961-A, low-dropout voltage regulator with enable

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS7A8101-Q1Automotive 1-A, high-PSRR, adjustable low-dropout voltage regulator with enable

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS7A881-A, low-noise, high-PSRR, dual-channel adjustable ultra-low-dropout voltage regulator

Data sheet: PDF | HTML
Multi-channel ICs (PMICs)

LP87524B-Q1Multiphase 4MHz, 4A/1.8V + 2.5A/2.3V + 1.5A/3.3V + 1.5A/1.2V buck converters for AWR and IWR MMICs

Data sheet: PDF | HTML
Shunt voltage references

LM4040Fixed voltage, 45-µA, precision micropower shunt voltage reference

Data sheet: PDF | HTML

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Evaluation board

AWR6843ISK — AWR6843 single-chip 60-GHz to 64-GHz automotive radar sensor antenna plug-in module

AWR6843ISK is an easy-to-use 60 GHz mmWave sensor evaluation kit based on AWR6843 device. The AWR6843ISK may be used to evaluate the AWR6843 and AWR6443 devices. This board is powered by USB interface and enables access to point-cloud data over USB or CAN-FD interface.

This kit is supported by (...)

User guide: PDF | HTML
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Technical documentation

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Type Title Date
* Design guide Vehicle Occupant Detection Reference Design (Rev. A) PDF | HTML Apr. 27, 2020
Technical article Detecting vehicle occupancy with mmWave sensors PDF | HTML Apr. 30, 2018

Related design resources

Software development

MMWAVE-SDK mmWave software development kit (SDK)

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