Methods and systems for reducing vehicle and animal collisions. One system includes an electronic processor configured to receive vehicle data. The electronic processor is also configured to determine a collision risk of the vehicle based on the vehicle data, the collision risk representing a probability of a collision between the vehicle and an animal. The electronic processor is also configured to adjust a collision parameter of the vehicle based on the collision risk. The electronic processor is also configured to identify when an animal is in a path of the vehicle based on the vehicle data. The electronic processor is also configured to, when an animal is identified in the path of the vehicle, automatically perform a vehicle operation based on the adjusted collision parameter.

Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for self-calibrating ultrasonic removal of sea lice. In some implementations, a method includes generating, by transducers distributed in a sea lice treatment station, a first set of ultrasonic signals, detecting a second set of ultrasonic signals in response to propagation of the first set of ultrasonic signals through water, determining propagation parameters of the sea lice treatment station based on the second set of ultrasonic signals that were detected, obtaining an image of a sea louse on a fish in the sea lice treatment station, determining, from the image, a location of the sea louse in the sea lice treatment station, and generating a third set of ultrasonic signals that focuses energy at the sea louse.

Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for self-calibrating ultrasonic removal of sea lice. In some implementations, a method includes generating, by transducers distributed in a sea lice treatment station, a first set of ultrasonic signals, detecting a second set of ultrasonic signals in response to propagation of the first set of ultrasonic signals through water, determining propagation parameters of the sea lice treatment station based on the second set of ultrasonic signals that were detected, obtaining an image of a sea louse on a fish in the sea lice treatment station, determining, from the image, a location of the sea louse in the sea lice treatment station, and generating a third set of ultrasonic signals that focuses energy at the sea louse.

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 method for operating a protective device for elements in a hybrid or electric vehicle, wherein at least one electric machine and at least one electrical power system, generates noise in the ultrasonic range.

A method for operating a protective device for elements in a hybrid or electric vehicle, wherein at least one electric machine and at least one electrical power system, generates noise in the ultrasonic range.

A pet location monitoring and deterrent system is provided. The system includes a first pet collar assembly that transmits a first RF signal. The system includes a first pillar assembly having a first control module, a first RF receiver module, an infrared photodetector array, a first wireless transceiver circuit, and a first warning light. The system includes a second pillar assembly having a second control module, a second RF receiver module, an infrared phototransmitter array, and a second wireless transceiver circuit. The first and second pillar assemblies are disposed a predetermined distance apart from one another such that a warning area is defined in front of and proximate to the first and second pillar assemblies and a keep-out area is defined behind and proximate to the first and second pillar assemblies.

A pet location monitoring and deterrent system is provided. The system includes a first pet collar assembly that transmits a first RF signal. The system includes a first pillar assembly having a first control module, a first RF receiver module, an infrared photodetector array, a first wireless transceiver circuit, and a first warning light. The system includes a second pillar assembly having a second control module, a second RF receiver module, an infrared phototransmitter array, and a second wireless transceiver circuit. The first and second pillar assemblies are disposed a predetermined distance apart from one another such that a warning area is defined in front of and proximate to the first and second pillar assemblies and a keep-out area is defined behind and proximate to the first and second pillar assemblies.

Certain types of fish respond differently to certain stimuli than other types of fish. Particularly, predetermined sound or vibration can cause certain types of fish to move away or jump. These reactions by particular types of fish can be used to capture the fish or prevent then from accessing parts of water systems. An exemplary capture mechanism employs multiple receptacles adapted to catch jumping fish from the air. An exemplary barrier of directed sound can prevent fish migration.