US Patent 10322802 Deployable sensors

Systems and methods for gathering sensor information using on-demand sensors and fixed sensors are described herein. For example, a system may include an on-demand sensor available for selective deployment within a workspace in which a plurality of mobile drive units transport a plurality of inventory holders. The system may also include a computing device that monitors movement of a mobile drive unit based on first sensor information. The computing device may also detect a triggering condition relating to the movement of the mobile drive unit. The computing device may also cause an on-demand sensor to collect second sensor information within the workspace based at least in part on detecting the triggering condition.