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  2. Wireless power transfer - Wikipedia

    en.wikipedia.org/wiki/Wireless_power_transfer

    Wireless power transfer (WPT; also wireless energy transmission or WET) is the transmission of electrical energy without wires as a physical link. In a wireless power transmission system, an electrically powered transmitter device generates a time-varying electromagnetic field that transmits power across space to a receiver device; the receiver ...

  3. Wireless powerline sensor - Wikipedia

    en.wikipedia.org/wiki/Wireless_powerline_sensor

    Wireless overhead power line sensors hanging from each of the three phases of a 4160 Volt powerline in a residential neighborhood, in Palo Alto, California. A Wireless powerline sensor hangs from an overhead power line and sends measurements to a data collection system.

  4. Capacitive sensing - Wikipedia

    en.wikipedia.org/wiki/Capacitive_sensing

    Capacitive sensors are constructed from many different media, such as copper, indium tin oxide (ITO) and printed ink. Copper capacitive sensors can be implemented on standard FR4 PCBs as well as on flexible material. ITO allows the capacitive sensor to be up to 90% transparent (for one layer solutions, such as touch phone screens).

  5. Capacitance probe - Wikipedia

    en.wikipedia.org/wiki/Capacitance_probe

    The key model involved in the use of these sensors is the electric field model. The correspondence between electrical properties of the material within the field and the measurement (i.e. capacitance) is fundamental in interpreting the readings from the dielectric sensor. [citation needed] Tip clearance measurement in turbomachinery testing. [1]

  6. Frequency domain sensor - Wikipedia

    en.wikipedia.org/wiki/Frequency_domain_sensor

    Capacitance probe, or fringe capacitance sensor.Capacitance probes use capacitance to measure the dielectric permittivity of the soil. The volume of water in the total volume of soil most heavily influences the dielectric permittivity of the soil because the dielectric constant of water (80) is much greater than the other constituents of the soil (mineral soil: 4, organic matter: 4, air: 1).

  7. Dielectric wireless receiver - Wikipedia

    en.wikipedia.org/wiki/Dielectric_wireless_receiver

    Dielectric wireless receiver is a type of radiofrequency receiver front-end featuring a complete absence of electronic circuitry and metal interconnects. It offers immunity against damage from intense electromagnetic radiation, produced by EMP and HPM sources.

  8. Wireless sensor network - Wikipedia

    en.wikipedia.org/wiki/Wireless_sensor_network

    Wireless sensor networks (WSNs) refer to networks of spatially dispersed and dedicated sensors that monitor and record the physical conditions of the environment and forward the collected data to a central location. WSNs can measure environmental conditions such as temperature, sound, pollution levels, humidity and wind.

  9. Radio-frequency microelectromechanical system - Wikipedia

    en.wikipedia.org/wiki/Radio-frequency_micro...

    Contact interface degradation poses a reliability issue for ohmic cantilever RF MEMS switches, whereas dielectric charging beam stiction, [12] as shown in Fig. 5(a), and humidity induced beam stiction, as shown in Fig. 5(b), pose a reliability issue for capacitive fixed-fixed beam RF MEMS switches. Stiction is the inability of the beam to ...