A pest repeller comprises a pest detector operable to detect the presence of a pest and then to generate an internal trigger signal, a speaker operable to produce ultrasound, and an antenna operable to transmit wirelessly and to receive wirelessly external trigger signals. A controller is configured to receive internal trigger signals from the pest detector and to receive external trigger signals from the antenna. Upon receiving an internal trigger signal, the controller is configured to provide a speaker drive signal to drive the speaker to produce the ultrasound, to generate an external trigger signal and to provide the external trigger signal to the antenna for transmission of the external trigger signal. Upon receiving an external trigger signal, the controller is configured to provide a speaker drive signal to drive the speaker to produce the ultrasound.

Devices and methods for disrupting flying insect activity of one or more flying insects within a zone are provided. One or more first acoustic signals from a first acoustic source are emitted, thereby causing the one or more flying insects to depart the zone. Each respective acoustic signal in the one or more first acoustic signals comprises a corresponding smooth periodic oscillation from the first acoustic source. Each corresponding smooth periodic oscillation independently has a frequency between 250 Hz and 1500 Hz.

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 ultrasonic transducer for wind turbine applications. The transducer includes a housing with a central diaphragm portion, a peripheral wall thereabout, and a flexure portion supporting the diaphragm portion relative to the peripheral wall. The apex of a cone is secured to the housing central diaphragm portion and the cone has a peripheral rim secured to the metal housing peripheral wall. A driver such as a piezoelectric element is secured to the housing central diaphragm portion opposite the cone apex.

An ultrasonic transducer for wind turbine applications. The transducer includes a housing with a central diaphragm portion, a peripheral wall thereabout, and a flexure portion supporting the diaphragm portion relative to the peripheral wall. The apex of a cone is secured to the housing central diaphragm portion and the cone has a peripheral rim secured to the metal housing peripheral wall. A driver such as a piezoelectric element is secured to the housing central diaphragm portion opposite the cone apex.

A deterrent device for training a pet to avoid a specific area. The deterrent device is a motion detection activated ultrasonic device that utilizes a high frequency sound to deter cats, dogs, and other pets from entering a protected area. The deterrent device comprises an ultrasonic transducer activated by a motion detector. Once motion is detected, the ultrasonic transducer emits ultrasound at a frequency of between 35-45 kHz to repel an animal from a protected area such as, a countertop, furniture, or a room. A frequency adjustment component allows a user to adjust the frequency based on the specific animal to be deterred. The deterrent device may be powered by alternating current or by battery.

A deterrent device for training a pet to avoid a specific area. The deterrent device is a motion detection activated ultrasonic device that utilizes a high frequency sound to deter cats, dogs, and other pets from entering a protected area. The deterrent device comprises an ultrasonic transducer activated by a motion detector. Once motion is detected, the ultrasonic transducer emits ultrasound at a frequency of between 35-45 kHz to repel an animal from a protected area such as, a countertop, furniture, or a room. A frequency adjustment component allows a user to adjust the frequency based on the specific animal to be deterred. The deterrent device may be powered by alternating current or by battery.

Aspects of the present invention determine a presence of insects at a location of a first device that comprises a computer processor, and in response to determining the presence of the insects at the location of the first device, apply a screen overlay that changes colors displayed by a display of the first device.

Aspects of the present invention determine a presence of insects at a location of a first device that comprises a computer processor, and in response to determining the presence of the insects at the location of the first device, apply a screen overlay that changes colors displayed by a display of the first device.

A combination of a visual warning cue and a conspicuous auditory warning cue acts synergistically to reduce bird strike frequency against a man-made structure. Methods and systems are described for providing said combination of warning cues when a bird is within a warning zone. The auditory warning cue entails at least two separate sonic pulses within one second when the bird is within the warning zone, and is defined by an intensity-weighted frequency average of between 6 kHz and 18 kHz, and an intensity at a location within the warning zone of at least 70 decibels.