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.

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.

The invention relates to a method for operating a protective device for elements, particularly exposed lines, in a vehicle, preferably a hybrid or electric vehicle which comprises at least one electrical machine and at least one power-electronic system, wherein a noise is generated in the ultrasonic range within the power-electronic system and/or within the at least one electrical machine.

The invention relates to a method for operating a protective device for elements, particularly exposed lines, in a vehicle, preferably a hybrid or electric vehicle which comprises at least one electrical machine and at least one power-electronic system, wherein a noise is generated in the ultrasonic range within the power-electronic system and/or within the at least one electrical machine.

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 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.

Systems and methods are disclosed for deterring wildlife, such as bats and birds, from drawing too proximate to an operating wind turbine. Wildlife species may be sensitive to transmitted frequencies, such as ultrasonic frequencies above the range of human hearing. For example, bats may avoid areas where ultrasonic frequencies are being emitted, either because the emitted ultrasonic frequency interferes with the echolocation of the bat, or because encountering the ultrasonic frequency is uncomfortable for the bat. In some aspects, acoustic transmitters may be arranged along a length of a blade of a wind turbine. A controller may direct the acoustical transmitters to transmit signals having ultrasonic frequencies to deter wildlife encounters. The controller may direct the transmitters to transmit only during periods where wildlife encounters are likely to occur (e.g. at night, during migration seasons, during favorable weather conditions, or the like).

Systems and methods are disclosed for deterring wildlife, such as bats and birds, from drawing too proximate to an operating wind turbine. Wildlife species may be sensitive to transmitted frequencies, such as ultrasonic frequencies above the range of human hearing. For example, bats may avoid areas where ultrasonic frequencies are being emitted, either because the emitted ultrasonic frequency interferes with the echolocation of the bat, or because encountering the ultrasonic frequency is uncomfortable for the bat. In some aspects, acoustic transmitters may be arranged along a length of a blade of a wind turbine. A controller may direct the acoustical transmitters to transmit signals having ultrasonic frequencies to deter wildlife encounters. The controller may direct the transmitters to transmit only during periods where wildlife encounters are likely to occur (e.g. at night, during migration seasons, during favorable weather conditions, or the like).

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.