Monitor-Mounted Distance Sensing for Detailed Sitting Posture Classification

The patent replaces complex image analysis and angle calculation with a simplified distance measurement system. Instead of using cameras to capture images and calculate spine/face angles through complex image processing algorithms, the invention uses distance sensors to directly measure the distance between the user and the monitor. This substitution of measurement methodology dramatically reduces calculation complexity while maintaining posture classification capability through multi-point distance measurements.

The patent creates a copy of the measurement function by placing distance sensors on the monitor rather than on the user's body. Instead of requiring sensors to be attached to the user, the system copies the measurement capability to the monitor itself, using multiple distance sensors positioned at different locations to infer posture information. This eliminates the need for body-worn sensors while maintaining measurement accuracy through multi-point measurements.

The patent segments the single distance measurement into multiple distance measurements taken at different positions. Instead of using one distance sensor positioned at a single location, the invention places multiple distance sensors at different positions (e.g., top-left, top-right, bottom-left, bottom-right of the monitor). This segmentation of the measurement system enables detailed posture classification by comparing distance variations across multiple measurement points, while the overall device structure remains relatively simple.

The patent implements a feedback mechanism that provides detailed error notifications based on posture classification results. The system not only detects posture deviations but also provides specific feedback information about the type and nature of the incorrect posture. By using multiple distance sensors to classify specific posture types (e.g., leaning left, leaning right, incorrect distance), the system can provide targeted error notifications that guide users toward correct posture, thereby reducing information loss about posture errors.