AAL Middleware Infrastructure for Green Bed Activity Monitoring

Figure 5

Setup environment: three fixed sensors 𝑆₁,  𝑆₂, and 𝑆₃ are placed on the environment. 𝑆₁ is placed on the nightstand, 𝑆₂ is placed on the dresser, and 𝑆₃ is placed on the wardrobe. The user wears a mobile sensor placed on the breast.