Privacy Safe Radar Based Human Presence and Fall Detection

The Privacy Safe Radar Based Human Presence and Fall Detection system operates by integrating high-precision millimeter-wave radar sensing with wireless communication and embedded graphical display processing. At the core of the setup, an LD6001 60GHz radar module acts as the primary sensing element, mounted to detect micro-motions, human presence, and sudden elevation changes indicative of a fall without capturing optical images, thereby maintaining complete visual privacy. The ESP32-S3-BOX-3 development board processes the data stream coming from the radar using the FreeRTOS multitasking environment managed via ESP-IDF. For user interface needs, the LVGL graphics library renders system statuses and alerts directly on the display hardware of the ESP32-S3-BOX-3. To extend monitoring capabilities across rooms, a pair of HC-12 Wireless UART modules facilitates serial data transmission, allowing the sensor node to relay telemetry and alert triggers to a remote receiver. Additionally, a Python-based PC visualization client can interface with the wireless link to display real-time tracking data on a computer screen. Power is delivered reliably through an 18650 Battery Shield paired with two 18650 Li-Ion cells, providing a portable and self-contained power supply for deployment in sensitive monitoring environments.