IEEE 1451
There is no strong center of the IEEE 1451 web presence, but a google search on "IEEE 1451" finds many interesting and useful references.
IEEE 1451 is a comprehensive, extremely detailed standard for describing sensors and actuators (together, "transducers"). From the web site:
IEEE 1451 ... describes a set of open, common, network-independent communication interfaces for connecting transducers (sensors or actuators) to microprocessors, instrumentation systems, and control/field networks. The key feature of these standards is the definition of Transducer Electronic Data Sheets (TEDS). The TEDS is a memory device attached to the transducer, which stores transducer identification, calibration, correction data, measurement range, and manufacture-related information, etc. The goal of 1451 is to allow the access of transducer data through a common set of interfaces whether the transducers are connected to systems or networks via a wired or wireless means.
