Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Peltier Module(also: Peltier Device, Thermoelectric Module, TEC Module)
- A Peltier module is a thermoelectric device that creates a temperature difference when electrical current is applied, with one side heating up and the other cooling down. In assistive technology, flexible Peltier modules are used to provide thermotactile feedback — controlled…
- Photoplethysmography(also: PPG)
- A non-invasive optical technique used to detect blood volume changes in peripheral circulation, commonly implemented in wearable devices like smartwatches and fitness trackers. PPG sensors use light (typically red and green LEDs) to measure how blood flow absorbs and reflects…
- Posture Detection(also: Posture Monitoring, Posture Recognition)
- The use of sensors or computer vision to identify and monitor a person's body posture in real time. In assistive technology, posture detection systems can use accelerometers, gyroscopes, or cameras to determine whether a user is sitting, standing, slouching, or hunching, and…
- Printed Circuit Board(also: PCB)
- A printed circuit board (PCB) is a flat board, typically made of fibreglass-reinforced epoxy laminate with copper traces, that mechanically supports and electrically connects electronic components. PCBs are the standard substrate of nearly all modern electronics, from consumer…
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