A clean method is configured for a surveillance camera. The surveillance camera comprises a mounting bracket and a main body which is rotatable relative to the mounting bracket so that the main body is rotatable around at least one rotation axis. The clean method includes the following steps. Drive the main body to rotate in a first path from a prepared position to an end of the first path, which is away from the prepared position, and to strike the mounting bracket to get the main body cleaned. Correct a relative position relationship between the main body and the mounting bracket.

A remotely positioned, ultrasonic wave producing, and low voltage anti-fouling system comprising; a computing module, a mounting system having a first end and a second end, wherein the first end is attached to vessel or a structure, a substantially waterproof enclosure detachably engaged with the second end of the mounting system, at least one transducer positioned within the substantially waterproof enclosure and cooperatively connected to the computing module, wherein the at least one transducer produces a sound wave able to impinge upon a submerged surface, at least one wave form generator cooperatively connected to the computing module and the at least one transducer, at least one power amplifier cooperatively connected to the at least one wave form generator and the at least one transducer, and at least one sensor cooperatively connected to the computing module, wherein the at least one sensor substantially.

An apparatus for cleaning flat, curved, and/or concave vehicular interior windshields and windows which has a cleaning pad coupled with an attachable/removable cleaning moistened tissue integral with an extended handle which contains a vibrating source powered by dry cell batteries thru an off/on switch.

A spray dryer absorber operative for removing gaseous pollutants from a hot process flue gas and a vibrator device for removing accumulated deposits therefrom is provided. The spray dryer absorber includes a spray dryer chamber equipped with a plurality of dispersers and atomizers mounted at a roof of the spray dryer chamber. The vibrator device is operative to remove accumulated deposits from the spray dryer absorber and its components, such as its dispersers and atomizers, to avoid spray dryer absorber performance interference caused by such deposit accumulations.

A spray dryer absorber operative for removing gaseous pollutants from a hot process flue gas and a vibrator device for removing accumulated deposits therefrom is provided. The spray dryer absorber includes a spray dryer chamber equipped with a plurality of dispersers and atomizers mounted at a roof of the spray dryer chamber. The vibrator device is operative to remove accumulated deposits from the spray dryer absorber and its components, such as its dispersers and atomizers, to avoid spray dryer absorber performance interference caused by such deposit accumulations.

An apparatus for cleaning a surface includes a body defining a cavity and terminating in a distal end that is adapted, in use, to be in the vicinity of a surface to be cleaned such that the surface forms an end wall of a chamber including the cavity; at least one cleaning liquid inlet for flow of a cleaning liquid into the chamber; a divider located in or at the end of the cavity that divides the chamber into first and second portions, the second portion, in use, being in fluid communication with the surface to be cleaned; and an acoustic transducer associated with the first portion to introduce acoustic energy into the chamber; wherein the divider is adapted to permit the passage of acoustic energy therethrough from the first portion to the second portion of the chamber to thereby allow pressure fluctuations to be generated at the surface.

A sensor system includes: a housing having an internal wall defining an opening; a transparent window mounted within the opening; a sensor device within the housing and having at least one of a sensor output or a sensor input alignable with the transparent window; a vibration device in communication with the transparent window, where the vibration device is controllable to produce a first sonic movement; where the transparent window is movably responsive to the first sonic movement with a second sonic movement; and at least one damping member located between the transparent window and the sensor device, where the damping member substantially isolates the sensor device from at least the second sonic movement of the transparent window. A method includes determining a cleaning trigger corresponding to cleaning the transparent window; and controlling, in response to the cleaning trigger, a vibration frequency, amplitude, or duration of the vibration device.

We describe an ice protection system used for removing ice and/or other accretions from a structure. An actuator, coupled to a structure, is driven to generate vibrations in the structure. A controller drives the actuator using a signal that comprises a frequency chirp over a first period of time, and the controller controls the frequency chirp and the first period such that vibrations generated in the structure by the actuator propagate through the structure to coincide at a desired area of the structure remote from the actuator to remove ice and/or other accretions from the desired area of the structure.

We describe an ice protection system used for removing ice and/or other accretions from a structure. An actuator, coupled to a structure, is driven to generate vibrations in the structure. A controller drives the actuator using a signal that comprises a frequency chirp over a first period of time, and the controller controls the frequency chirp and the first period such that vibrations generated in the structure by the actuator propagate through the structure to coincide at a desired area of the structure remote from the actuator to remove ice and/or other accretions from the desired area of the structure.

A level measurement device for measuring a level (L) of a product, in particular a product contained in a container, comprising: mounting means for mounting said measurement device at a measurement site, an antenna comprising a dielectric antenna element for transmitting microwave signals (S) towards the product and/or for receiving echo signals (R) resulting from reflections of the transmitted microwave signals, and measurement electronics for determining the level (L) of the product based on a transit time needed for the microwave signals to travel to a surface of the product and of their echo signals to return to the device, is described allowing to prevent deposits to build up, which may eventually impair transmission and/or reception of the signals. To this extent, the measurement device according to the invention comprises a cap covering said dielectric antenna element and cleaning means for cleaning said cap are foreseen, which cause said cap to vibrate when they are activated.