LPWAN

Default gateway

Body area network

World Wide Web

Wireless sensor network

IPv6

Embedded system

Computer security

Operating system

The Internet

Computer science

Cloud computing

Computer network

Internet of Things

6LoWPAN

Wearable computer

Gateway (web page)

Sensors

This paper presents a hybrid wearable sensor network system towards the Internet of Things (IoT) connected safety and health monitoring applications. The system is aimed at improving safety in the outdoor workplace. The proposed system consists of a wearable body area network (WBAN) to collect user data and a low-power wide-area network (LPWAN) to connect the WBAN with the Internet. The wearable sensors in the WBAN are exerted to measure the environmental conditions around the subject using a Safe Node and monitor the vital signs of the subject using a Health Node. A standalone local server (gateway), which can process the raw sensor signals, display the environmental and physiological data, and trigger an alert if any emergency circumstance is detected, is designed within the proposed network. To connect the gateway with the Internet, an IoT cloud server is implemented to provide more functionalities, such as web monitoring and mobile applications.

An Internet-of-Things (IoT) Network System for Connected Safety and Health Monitoring Applications