Classification of Daily Activities for the Elderly Using Wearable Sensors

Table 1

Orientation threshold for posture detection.

Segment	Posture
	Sitting		Standing		Lying
	Range	Reference	Range	Reference	Range	Reference
Trunk	±60°	Vertical	±20°	Vertical	−30°~45°	Horizontal
Thigh	±60°	Horizontal	±30°	Vertical	±30°	Horizontal