S x x x x x x Sample Clauses

S x x x x x x. A sensor is a device or system able to measure physical, chemical, electrical, or optical quantity of a phenomenon and to produce an output related to that quantity. The most generally accepted definition of sensor in technical and scientific literature says that a sensor is conceptually composed of a fundamental transduction mechanism (sensing elements), that converts one form of energy into another, and an output interface, that includes a physical packaging, conditioning electronics and external connections (e.g. electrical or optical). A sensor with built-in processing and embedded with a network interface is usually called “smart” sensor. To operate the processor the smart sensor also has a power source. These smart sensors will progress, in terms of cost, power consumption and functionality, at rates similar to those experienced by other integrated circuits, such as microprocessors and memory, because they use much of the same technology (Xxxxx X., 2000). On the networking side, a family of standards exists that describes different ways to connect smart transducers to networks, IEEE 1451. Xxxxxxx et al. (Xxxxxxx X. et al., 2010) in their study described clearly how applying IEEE 1451 in AAL context. The IEEE 1451 family of standards deals with data formats, communication protocols of the transducers and other devices. Transducers are said to be smart if they have three characteristics.