Wireless Sensor Network

A distributed network of small, autonomous sensor devices that monitor physical or environmental conditions and wirelessly transmit data to a central system for processing. In assistive technology applications, wireless sensor networks can detect events such as movement, moisture, temperature, or proximity and trigger alerts or actions to support people with disabilities. Common protocols include ZigBee (IEEE 802.15.4) and Bluetooth Low Energy. WSNs are valued in assistive technology for their low power consumption, unobtrusive deployment, and ability to monitor without requiring active user interaction.