Abstract: A system includes a sensor body that has a folded optical waveguide configured in a “U” shape, wherein the waveguide is configured to convey infrared energy from one end of the waveguide to the other end of the waveguide.

Abstract: A system includes a sensor configured to sense an environmental condition. The sensor includes an input/output (I/O) reconfiguration system. The sensor further includes a plurality of I/O connectors configured to interface with at least one external system, wherein the I/O reconfiguration system is communicatively coupled to at least one of the plurality of I/O connectors and is configured to derive a sensor function based on an indication received via the at least one of the plurality of I/O connectors, and wherein signals derived by the sensor based on the sensor function are provided via the plurality of I/O connectors.

Abstract: A sensor system includes a sensor unit configured for communication has a sensor controller that initiates calibration of the sensor when a respective calibration condition occurs. The calibration condition may involve detection of appropriate environmental conditions and/or a signal received via a communication component. The sensor controller may acquire missing information with the communication. A master controller may be used that receives data from multiple sensor units and distributes information and/or sends a calibration initiation signal.