Department of Information and Electrical Engineering and Applied Mathematics, University of Salerno, 84084 Fisciano, SA, Italy.
Sensors (Basel). 2023 May 17;23(10):4830. doi: 10.3390/s23104830.
The rise of the Internet of Things (IoT) has enabled the development of measurement systems dedicated to preventing health issues and monitoring conditions in smart homes and workplaces. IoT systems can support monitoring people doing computer-based work and avoid the insurgence of common musculoskeletal disorders related to the persistence of incorrect sitting postures during work hours. This work proposes a low-cost IoT measurement system for monitoring the sitting posture symmetry and generating a visual alert to warn the worker when an asymmetric position is detected. The system employs four force sensing resistors (FSR) embedded in a cushion and a microcontroller-based read-out circuit for monitoring the pressure exerted on the chair seat. Java-based software performs the real-time monitoring of the sensors' measurements and implements an uncertainty-driven asymmetry detection algorithm. The shifts from a symmetric to an asymmetric posture and vice versa generate and close a pop-up warning message, respectively. In this way, the user is promptly notified when an asymmetric posture is detected and invited to adjust the sitting position. Every position shift is recorded in a web database for further analysis of the sitting behavior.
物联网 (IoT) 的兴起使得专门用于预防健康问题和监测智能家居和工作场所状况的测量系统得以开发。IoT 系统可以支持对从事计算机工作的人员进行监测，并避免因长时间保持不正确坐姿而导致常见的肌肉骨骼疾病的发生。这项工作提出了一种低成本的 IoT 测量系统，用于监测坐姿对称性，并生成可视警报，在检测到不对称位置时警告工人。该系统使用嵌入在坐垫中的四个力感应电阻器 (FSR) 和基于微控制器的读取电路来监测施加在椅子座位上的压力。基于 Java 的软件实时监测传感器的测量值，并实现了一种基于不确定性的不对称检测算法。从对称姿势到不对称姿势的转变以及相反的转变分别生成和关闭弹出警告消息。这样，当检测到不对称姿势时，用户会立即收到通知，并被邀请调整坐姿。每次位置变化都会记录在网络数据库中，以便进一步分析坐姿行为。
