Abstract:
The present disclosure is directed to methods and apparatus for locating luminaires within a lighting system where multiple luminaires are located on a grid of DC power rails. The AC signal generator connects to each DC power rail and transmits an AC signal along each DC power rail in turn to luminaires that each compute their distance from the generator based upon the AC signal. The AC signal generator may similarly transmit and receive data communications with luminaires across DC power rails.
Abstract:
A dental apparatus is provided. The dental apparatus includes a handle including a power button configured to place the dental apparatus in on/off configurations. A controller is housed within the handle and includes a mouth detection module and a tooth anomaly module. Electrical circuitry is in operable communication with the mouth detection module and tooth anomaly module and is configured to emit a low intensity excitation light having a first frequency and a high intensity excitation light which may have a second frequency. The low intensity excitation light is utilized to detect the presence of tooth material and the high intensity excitation light is utilized to detect the presence of a tooth anomaly or to treat a dental condition.
Abstract:
Properties of the air such as temperature, pressure, humidity and air flow can modify the propagation pathway of an acoustic signal. By making acoustic measurements of a known acoustic path it is possible to estimate at least one of the temperature, the pressure, the humidity and the air flow using perturbations present in the measured signal. Moreover, by combining data from several acoustic pathways topographical reconstruction of profiles of at least one of the temperature, the pressure, the humidity and air flow can be obtained. Profiling these data over an extended volume such as an office or green house is particularly important for local control.