Review Sensor

A sensor is a device that captures signals from the world, such as light, sound, motion, or temperature, so an AI system can perceive more than text alone.

A sensor converts a physical phenomenon—such as light, sound, force, motion, or temperature—into a measurable signal a system can use.

A system can respond only to what its sensors capture. Range, calibration, noise, placement, sampling, and failure modes shape the reality available to the model or controller.

A delivery robot combines camera, lidar, wheel encoder, and temperature readings to estimate its surroundings and operating condition.

A sensor does not understand what it measures. Interpretation happens elsewhere, and a precise signal can still be incomplete or misleading about the wider situation.

A sensor turns a physical event into a usable signal.

* [[robot|Robot]] * [[multimodal|Multimodal]] * [[digital-twin|Digital Twin]] * [[observation|Observation]]

* [NIST, “A Glossary of Terms for Robotics”](https://nvlpubs.nist.gov/nistpubs/Legacy/IR/nbsir81-2340.pdf) — provides historical robotics definitions, including android and sensor.

* Compare [[robot|Robot]], [[multimodal|Multimodal]], [[digital-twin|Digital Twin]], and [[observation|Observation]] to place Sensor in the surrounding system. * Follow the cited source material above for the method, standard, or research context behind this draft.