NOVELTY - The system (100) comprises a device with a fluid (104) and a mode of operation, a fluid sensor (106) in contact with the fluid that measures a parameter of the fluid and transmits data associated with the parameter, a control component (108) that receives the data, determines a current state (110) of the fluid based in part upon a comparison of the data with pre-existing state data associated with the fluid and infers a future state (112) of the fluid in real-time, a sensor network, a microelectromechanical system (MEMS) structure, and a nano structure.    USE - The system is useful for facilitating machinery diagnostics, prognostics and control by way of condition sensing.    ADVANTAGE - The system facilitates real-time and in situ measurements to diagnose, forecast, probe and/or control the machinery, process, products and/or fluids thus preventing degradation of the machine fluids and damage to the machine. The ceramic carrier is inexpensive to fabricate, suitable for mass fabrication, easy to disassemble and re-assemble, water tight, resistant to exposure to the fluids, suitable for multiple sensors, easy to embed into the device, and capable of shielding the fluid sensor from a stray field.    DETAILED DESCRIPTION - The system (100) comprises a device with a fluid (104) and a mode of operation, a fluid sensor (106) in contact with the fluid that measures a parameter of the fluid and transmits data associated with the parameter, a control component (108) that receives the data, determines a current state (110) of the fluid based in part upon a comparison of the data with pre-existing state data associated with the fluid and infers a future state (112) of the fluid in real-time, a sensor network, a microelectromechanical system (MEMS) structure, and a nano structure that moves in the fluid and supplies energy to the fluid sensor. The fluid sensor is powered by an attribute of the fluid. The parameter is oxidation level, temperature, viscosity, oxidation/reduction potential, pH, dielectric, total acid numbers (TAN), water, conductivity, ferrous contamination, additive state, and chemical contaminants. The control component infers the future state based upon the current state, pre-existing state data associated with the fluid and a prognostics algorithm. The control component is embedded in the fluid sensor and remote from the fluid sensor, and communicates with the fluid sensor by way of wireless communication. The sensor network is DeviceNet network (RTM: Open device level network that provides connections between simple industrial devices such as sensors and actuators) and an IntelliBus network (RTM: High-speed data acquisition bus that enables multiple sensors to be controlled on a shared communication link). The current state is an evaluation of a health of the fluid. The future state is an estimate of a useful life of the fluid. The control component determines a remedial action and provides control information in connection with the remedial action. The remedial action is a change of the mode of operation of the device and a release of an additive into the fluid. The control component implements the remedial action by transmitting the control information to the device, and transmits the control information as an alert. The fluid sensor is a resistance temperature detector (RTD), an acidity sensor, an impedance sensor, an electrochemical sensor, a moisture sensor and a smart sensor that includes a data specification. The MEMS structure and a nano structure moves in the fluid based upon one of a fluid flow, a pressure fluctuation, a vibration from the device and a thermal gradient, and is a paddle wheel, a flapping plate, a rotating disk, a pressure diaphragm, a piezoelectric material and a thermo-electric material. The fluid is a dielectric fluid, and the fluid sensor harvests energy based upon a charge extant in the dielectric fluid. The charge is created from particle detachment, tribocharging, scuffing on a surface of the device, and work activity on a surface. An electrode with a sacrificial element is arranged for supplying energy to the fluid sensor based upon an electrochemical reaction between the fluid and the element. The fluid sensor is powered by a fuel cell that harvests energy from the fluid, and employs electrical impedance spectroscopy (EIS) to determine a conductivity of the fluid and a metal ion signature of a metal. A microgenerator is arranged for supplying power to the fluid sensor. The control component employs the signature to determine the current state, where the current state relates to a metal wear in the device and an amount of metal in the fluid, and requests additional data from the fluid sensor, where the additional data relates to probing and/or tracking. The fluid sensor includes an element that is coated with an ion selective coating or a coating that promotes selective ion transfer to enhance detection, identification and quantity determination of a biological agent in the fluid, and is packaged in a ceramic carrier. A second sensor is arranged to measure a second parameter of the device in situ, and transmits data associated with the second parameter to the control component. The second parameter is a fluid parameter and a device parameter. The device parameter relates to a vibration data and a decibel level. The control component receives data from the fluid sensor and the second sensor, and employs sensor fusion to infer the future state.    DESCRIPTION OF DRAWING(S) - The figure shows a block diagram of a system that facilitates machinery diagnostics, prognostics and control by way of condition sensing.    System (100)    Fluids (104)    Fluid sensor (106)    Control component (108)    Current state (110)    Future state. (112)