Little one-Presence And Occupant-Detection Reference Design 

The reference design allows in-cabin occupant detection, providing options for airbag deployment, little one detection, and extra. Uncover extra inside!

The TIDEP-01023 reference design from Texas Devices (TI) allows design engineers to develop and implement in-cabin car occupant detection methods. With the AWR6843AOP sensor, primarily based on 60-GHz mmWave RF-CMOS expertise, this design supplies a single-chip answer that integrates a radar entrance finish, ARM microcontroller (MCU), and DSP core. This enables engineers to construct radar methods for in-cabin sensing functions, akin to airbag deployment, local weather management, and detecting kids or disabled people left behind in autos.

The reference design helps a large azimuth and elevation discipline of view (±60°) and a close-range sensor configuration (as much as 3 meters), enabling detection and localization of life kinds throughout a number of areas inside a car. Engineers can use the offered algorithms to generate azimuth-range and elevation-range warmth maps and implement detection and decision-making processes. The design permits for sensor placement in areas such because the overhead console, close to the rear-view mirror, within the headliner, B/C pillars, or on seats. This flexibility allows engineers to adapt the system to make use of circumstances, together with little one presence detection, seat belt warnings, intruder detection, driver important signal monitoring, and gesture recognition.

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The Information Path Supervisor (DPM) manages processing on the system, which coordinates duties throughout the R4F and DSP. The group tracker runs on the Cortex R4F as a separate process, encapsulated in a DPU for initialization and configuration by the DPM. Throughout runtime, the group tracker operates in its process, which waits for a semaphore to be launched as soon as the purpose cloud is obtained and saved from the DSP. This enables the Cortex R4F to transmit knowledge by way of UART or course of ADC knowledge via the HWA whereas the tracker continues to run utilizing the purpose cloud from the earlier body.

Designed for overhead roof mounting, the AWR6843AOP sensor can monitor two rows of seats with an azimuth and elevation discipline of view of 120 levels. The sensor’s type issue and capabilities make it a selection for low-power, self-monitoring radar methods, offering precision in detecting occupants and different in-cabin actions.

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To assist growth, the mmWave Software program Improvement Equipment (SDK) supplies engineers with instruments and demonstration functions to combine the AWR6843AOP sensor into customized mmWave options. The SDK provides pre-built parts, permitting engineers to give attention to their utility wants. With sources akin to {hardware} lists, schematics, and software program, this reference design supplies a path to creating car occupant detection merchandise.

TI has examined this reference design. It comes with a invoice of supplies (BOM), schematics, meeting drawing, printed circuit board (PCB) structure, and extra. The corporate’s web site has further knowledge concerning the reference design. To learn extra about this reference design, click on right here.