**3. Smart healthcare at home (SHAH): An architectural overview**

The smart home is one of the major scenarios in which digital patients are enabled. This section presents an architectural overview of a Smart Healthcare at Home (SHAH) system, which integrates DT, IoMT, and AI/ML technologies. By no means the SHAH system covers the entire design space of smart healthcare services in the era of DT, IoMT, and more emerging new technologies, but we hope it provides our readers with some useful insights for further exploration.

#### **3.1 System architecture**

**Figure 1** illustrates the system architecture of the SHAH framework. This conceptual architecture utilizes DT technology to build an edge-layer virtual healthcare system, which is designed to provide smart healthcare services to the residents living in the smart home. The major components or function blocks in this framework include:


**Figure 1.** *SHAH system architecture: An overview.*

view and the motion detector is triggered if someone enters the room where it was mounted. And by combining this information with other data collected by body sensors, the system is capable of defining certain patterns and giving a timely response if any anomaly is detected.

