Abstract: Disclosed are an ultrasound generator, a pest extermination and repellent system using the ultrasound generator, and a method of controlling the ultrasound generator. The ultrasound generator may include a driving signal generator that generates a driving signal, a modulator that generates a modulated signal by modulating an amplitude of the driving signal, a first ultrasonic vibrator that generates a first ultrasonic signal of a first frequency based on the modulated signal, a second ultrasonic vibrator that generates a second ultrasonic signal of a second frequency based on the modulated signal, and a controller that adjusts an output timing of the modulated signal to output the first ultrasonic signal and the second ultrasonic signal at least once during a unit time period.

Abstract: This application relates to methods and apparatus for driving a transducer with switching drivers. A driver circuit has first and second switching drivers for driving the transducer in a bridge-tied-load configuration, each of the switching drivers having a respective output stage for controllably switching the respective driver output node between high and low switching voltages with a controlled duty cycle. Each of switching drivers is operable in a plurality of different driver modes, wherein the switching voltages are different in said different driver modes. A controller controls the driver mode of operation and the duty cycle of the switching drivers based on the input signal. The controller is configured to control the duty cycles of the first and second switching drivers within defined minimum and maximum limits of duty cycles; and to transition between driver modes of operation when the duty cycle of one of the switching drivers reaches a duty cycle limit.

Abstract: A remote notification electronic rodent trapping system and method is provided having a plurality of rearming electronic rodent trapping devices configured to wirelessly communicate trap information to a base station that is in communication with a cloud server. When a trap is activated by a rodent trigger it changes from a set state to a kill alert state and initiates a killing cycle. The trap waits a first time period and then sends a notification signal to the base station of trap activation which the base station forwards to the cloud server. The cloud server waits a second predetermined time period before sending a pushed notification to a remote user of the trap's kill alert state. If the trap rearms prior to expiration of the second time period, it alerts the base station which notifies the cloud server. The cloud server updates trap status to the set state and does not send a notification to the user.

Abstract: In some implementations, a server may receive sensor data from a plurality of detectors, including receiving first sensor data from a first detector and second sensor data from a second detector. The server may use the sensor data to retrain a detector-based machine learning algorithm to create an updated detector-based machine learning algorithm. The server may send the updated detector-based machine learning algorithm to the first detector and the second detector. For example, the updated machine learning algorithm may be trained to identify at least one pest that the machine learning algorithm is incapable of identifying.

Abstract: In some implementations, a pest detector may receive sensor data from a sensor. The pest detector may determine, using a machine learning algorithm, that the sensor data indicates a presence of a first type of pest. The pest detector may send a notification message, including at least a portion of the sensor data, to a computing device and visually indicate that the first type of pest was detected using an indicator. The pest detector may receive an update to the machine learning algorithm from a server and install the update to create an updated machine learning algorithm. The pest detector may receive second sensor data and determine, using the updated machine learning algorithm, that the second sensor data indicates the presence of a second type of pest that is not recognized by the machine learning algorithm.

Abstract: Example computer systems, computer apparatuses, computer methods, and computer program products are disclosed for testing an ultrasonic gas leak detection device. An example method includes determining a rotary position of a rotary selector of the handheld ultrasonic testing device. The method further includes determining whether the rotary position of the rotary selector corresponds to a first testing mode for testing the ultrasonic gas leak detection device or a second testing mode for testing the ultrasonic gas leak detection device. The method further includes generating a first ultrasonic signal for testing the ultrasonic gas leak detection device in response to determining that the rotary position of the rotary selector corresponds to the first testing mode. The method further includes generating a second ultrasonic signal for testing the ultrasonic gas leak detection device in response to determining that the rotary position of the rotary selector corresponds to the second testing mode.

Abstract: A vehicle frontal illumination system includes a bracket attached to a front of a vehicle, where the bracket includes a light receiving surface that faces the front of the vehicle. The system also includes one or more lights attached to the light receiving surface of the bracket such that the one or more lights face the front of the vehicle. The system further includes a control system in communication with the light, where the control system is configured to turn the one or more lights on to illuminate the front of the vehicle to reduce the likelihood of an animal vehicle collision.

Abstract: Directed audio emissions systems and methods may include one or more sensors, one or more audio transmitters, and a controller configured to cause emission of directed audio output toward various objects, such as people, animals, vehicles, devices, or others. For example, responsive to detecting a potential safety situation and/or a potential intended communication situation associated with one or more detected objects, selected audio output having selected audio characteristics may be emitted toward the detected objects using selected audio transmitters. The audio characteristics may be selected to direct and/or accentuate the audio output at a particular location of a detected object, and the audio characteristics of the audio output may be customized based on a type and other characteristics of the detected object.

Abstract: An accessory for an adult toy is disclosed. Herein, the adult toy has a vibration motor and a controller configured to actuate the vibration motor by generating an actuation signal. The accessory comprise a body adapted to be mounted on the adult toy. The accessory also comprises a light source arranged inside the body. The accessory further comprises a control circuit. The control circuit is configured to control the light source upon actuation of the vibration motor by the controller. A system and a method implementing the adult toy with the accessory for providing adult entertainment are also disclosed.

Abstract: Systems and methods for deterring avian species from approaching a sensitive area. A determination is made that a bird is approaching a sensitive area. A predefined flight path is selected from a plurality of predefined flight paths based on the determination that the bird is approaching the sensitive area. Each of the predefined flight paths of the plurality of predefined flight paths is configured to avoid objects within the sensitive area. An unmanned aerial vehicle is instructed to traverse the predefined flight path that has been selected.

Abstract: An inlet air filtration unit for a gas turbine includes an inlet filter house having an upstream surface through which air is ingested. A plurality of weather hoods is secured to the upstream surface. A wave-generating system is installed on or proximate to the plurality of weather hoods, the wave-generating system emitting waves that deter pests from the inlet filter house. A method of deterring pests from entering an inlet filter house of an inlet air filtration system is also provided. The method includes: installing a wave-generating system proximate to or on a weather hood on an upstream surface of the inlet filter house; and energizing the wave-generating system to produce energy waves across the upstream surface of the inlet filter house.

Abstract: In some implementations, a detector may include one or more sensors, one or more external indicators, one or more processors, and one or more non-transitory computer readable media storing instructions that are executable by the one or more processors to perform various operations. The operations may include detecting, by a motion sensor, movement associated with the pest and capturing, by a sensor (e.g., an imaging sensor) of the detector, sensor data (e.g., a digital image) of the pest. The operations may include determining, by a machine learning algorithm, that the sensor data indicates a presence of a pest, and sending a notification message to a computing device. The notification message may include at least a portion of the sensor data. The operations may include visually indicating, using a pest indicator of the one or more external indicators, that the pest was detected.

Abstract: In some implementations, a detector may include one or more sensors, one or more external indicators, one or more processors, and one or more non-transitory computer readable media storing instructions that are executable by the one or more processors to perform various operations. The operations may include detecting, by a motion sensor, movement associated with the pest and capturing, by a sensor (e.g., an imaging sensor) of the detector, sensor data (e.g., a digital image) of the pest. The operations may include determining, by a machine learning algorithm, that the sensor data indicates a presence of a pest, and sending a notification message to a computing device. The notification message may include at least a portion of the sensor data. The operations may include visually indicating, using a pest indicator of the one or more external indicators, that the pest was detected.

Abstract: A personal protective field generator utilizes at least one pulse generator to generate one or more carrier signals, which are then modulated by a signal modulator unit and output through a field transmission unit in order to create a personal protective field around a user or other object through the “skin effect,” a byproduct of high frequency pulses at specific voltages. The personal protective field created through the skin effect can repel unwanted contact with the user such as insects, dust, chemical vapors or other environmental hazards.

Abstract: In some implementations, a detector may include one or more sensors, one or more external indicators, one or more processors, and one or more non-transitory computer readable media storing instructions that are executable by the one or more processors to perform various operations. The operations may include detecting, by a motion sensor, movement associated with the pest and capturing, by a sensor (e.g., an imaging sensor) of the detector, sensor data (e.g., a digital image) of the pest. The operations may include determining, by a machine learning algorithm, that the sensor data indicates a presence of a pest, and sending a notification message to a computing device. The notification message may include at least a portion of the sensor data. The operations may include visually indicating, using a pest indicator of the one or more external indicators, that the pest was detected.

Abstract: One nonlimiting variation of a detection arrangement includes one or more sensors each structured to detect at least one biochemical substance indicative of biochemistry of one or more target insect species and provide a corresponding sensor signal, a controller responsive to the sensor signal of each of the one or more sensors to determine if the one or more insect species are present and generate a corresponding output signal, and an indicator responsive to the output signal to indicate the presence of the one or more insect species.

Abstract: An insect decoder and communicator, comprising a user input interface, a microcontroller, a power source, a non-user input, an output interface, and a communication interface to communicate with external devices, where the user input interface, microcontroller, power source, non-user input, output interface, and communication interface are electronically connected, a preset pattern of insect communication from an external device loaded into the microcontroller through the communication interface and stored into memory, and the non-user input connected to the microcontroller and causing the microcontroller to modify the frequency of the preset patterns of insect communication produced by the output interface to accurately emulate patterns of insect communications affected by ambient temperature.

Abstract: A green-light device for driving mice away includes a casing and a control circuit in the casing, wherein the control circuit comprises a power conversion circuit, a voltage regulating integrated circuit (IC), an amplifying circuit, a control knob, an ultrasonic frequency oscillator circuit, a logical-determination circuit and multiple green-light emitting diodes (LED) coupled to and controlled by the logical-determination circuit. The control knob is configured to be switched to lead the control circuit to create an ultrasonic wave or a special light wave such that mice can be cheated or driven away.

Abstract: A rat guard and method utilizing a flexible shield affixed to a plastic sheath positioned on a mooring line to prevent entry onto or exit from the ship by vermin. An electric grid is positioned on an insulated pad on the sheath which is electrically connected to the shield for receiving power from an acoustical generator also connected to the shield and spaced therefrom. The acoustical generator directs ultrasonic acoustic signals in a variable frequency range toward the shield to frighten rats or other vermin therefrom. Should the acoustical signals not deter the vermin, the electric grid will shock any vermin making contact therewith to cause harm and frighten. The shield provides another obstacle to prevent advancement and is affixed to the sheath on the mooring line. The shield is flexible and remains in place during high winds and other adverse weather conditions.

Abstract: A pest repellant device is provided for use in and around vehicles, such as cars, trucks, recreational vehicles and campers, boats, aircraft, and the like. The pest repellant device includes a fluid repellant dispenser and an electronic pest repellant unit, including at least an ultrasonic emitter and an electromagnetic emitter. The fluid repellant dispenser and the electronic pest repellant unit are operable together or in coordinated fashion in order to discourage common pests, such as insects and arachnids, small rodents, and the like, from entering a vehicle, and in particular from entering a field of view of a vehicle operator and creating a distraction or safety hazard. Optionally, the device may include an ion emitter that acts as an air purifier.

Abstract: A bird deterrent system includes (i) measurement of bird habituation to activation of deterrent devices and (ii) reduction of habituation through increased selectivity in activating deterrents only for birds posing a threat to or threatened by a protected area, and in particular, those within threat altitudes. The bird deterrent system further provides (iii) analytical data in support of safety management systems, risk management, etc., and (iv) integrated, wide-area radar coverage with multiple virtual intrusion zones providing multiple lines of defense around and over very large protected areas.

Abstract: A signaling device that indicates actuation of a remotely located mousetrap comprises a base that supports the trap, a power supply, and a mounted electrical interface switch. The switch is held open by a non-conductive interrupter positioned between the switch contacts and connected to the bail of the trap. The bail dislodges the interrupter and closes its switch when the trap is actuated, producing a visual flashing light at the users location. The signaling device can be tested by a test actuator switch located at the users location. A tether clips the signaling device to the trap.

Abstract: The wildlife dislodging device outputs sound signal while a frequency is changed to a different frequency stepwise, and suddenly outputs a sound signal pulse of a high frequency in changing the frequency.

Abstract: The present disclosure is grounded in field study of habits of many species of animals, such as birds and bats to provide some examples, as well as their anatomical composition. This study has allowed an understanding of ingrained responses of these animals that can be modified by a biological understanding of physiology, sound and ultrasound technology, laser technology, and intelligent animal recognition. The unique coordination between these specialized technologies provides for animal casualty prevention in a sustainable way that achieves unprecedented success in diverting or deterring animals from their collision course with objects, such as wind turbines or aircraft to provide some examples. Moreover, the present disclosure does not substantially affect the well-being of the animals and does not introduce substantially harmful side-effects to the animals, their environment, and any surrounding human population.

Abstract: A rat guard and method utilizing a flexible shield affixed to a plastic sheath positioned on a mooring line to prevent entry onto or exit from the ship by vermin. An electric grid is positioned on an insulated pad on the sheath which is electrically connected to the shield for receiving power from an acoustical generator also connected to the shield and spaced therefrom. The acoustical generator directs ultrasonic acoustic signals in a variable frequency range toward the shield to frighten rats or other vermin therefrom. Should the acoustical signals not deter the vermin, the electric grid will shock any vermin making contact therewith to cause harm and frighten. The shield provides another obstacle to prevent advancement and is affixed to the sheath on the mooring line. The shield is flexible and remains in place during high winds and other adverse weather conditions.

Abstract: The mouse expeller contains a casing member, a control circuit inside the casing member, and at least a sounding device also inside the casing member and connected to the control circuit. The control circuit contains a voltage regulator IC, audio-frequency oscillator ICs, variable resistors, capacitors, transistors, resistors, and a light emitting diode (LED), a switch, and a power connector. The power connector is connected to a power adaptor. Adjusting the variable resistors is able to alter the frequencies of the audio-frequency oscillator ICs. The sounding device contains a tubular body functioning as a closed resonant chamber so as to boost the sound power to cover a large area.

Abstract: An ultrasound emission deratization device is described, comprising generation means (A, B, D) of a first ultrasound frequency (P1) and a second ultrasound frequency (P2) which are alternated, with a predetermined mean emission time for each of the two, and randomly variable time range pauses between a minimum and a maximum between one and the other.

Abstract: An animal warning device for emitting a sound that is loud and consistent enough to cause animals to avoid oncoming vehicles. The present invention accomplishes this objective by electrically connecting a speaker to a wind-powered generator. The wind-powered generator is driven by air current striking an impeller. The device is mounted onto a vehicle such that oncoming air current strikes the impeller causing the impeller to rotate. Rotation of the impeller causes the generator to produce a current which powers the speaker. As such, it is unnecessary to connect the animal warning device to an external power source, such as the vehicle's alternator or battery.

Abstract: The invention relates to a device for protecting a photovoltaic plant (1) against rodent bite damage, wherein the photovoltaic plant (1) comprises several components, among them solar cells (2), a control unit (5), an inverter (7), an internal voltage supply means (13) and at least one microcontroller (9) which are interconnected via corresponding lines (3, 6, 8, 11). To provide such a device which offers an optimum protection against damage caused by bites and which entails as little maintenance and installation expenditures as possible, an ultrasonic transmitter (12) is provided for emitting an ultrasonic signal, and the ultrasonic transmitter (12) is connected to a microcontroller (9) of the photovoltaic plant (1) such that the ultrasonic signal emitted is controllable via the photovoltaic plant (1).

Abstract: A rodent repeller having an audio signal generator configured to generate a chattering sound that mimics a distressed rodent. The audio signal generator produces a variable sound frequency to generate the chattering sound of distressed rodents.

Abstract: The mouse expeller contains a casing member, a control circuit inside the casing member, and at least a set of pressurized audio or ultrasonic speakers also inside the casing member and connected to the control circuit. The speaker is positioned at an end of a tubular body made of a metallic or plastic material functioning as a resonant chamber so as to boost the sound power for an enhanced coverage area. At least a variable resistor is configured on the control circuit which is manually adjustable from outside the casing member so as to vary the output frequency of oscillator ICs. As such, the mouse expeller is able to produce a sound wave at various frequencies without the issue that the mice would get used to the sound wave.

Abstract: The wildlife dislodging device outputs sound signal while a frequency is changed to a different frequency stepwise, and suddenly outputs a sound signal pulse of a high frequency in changing the frequency.

Abstract: A rodent repeller having an elongated body, an end cap, an apex, a power supply, a buzzer, and a buzzer transformer. Connection of the power supply to the audible signal generator via the audible signal generator transformer produces a signal in the form of a chatter sound that mimics a frightened rodent to discourage rodents from remaining in a vicinity of the rodent repeller. The rodent repeller can further utilize solar power.

Abstract: The invention relates to a device for protecting a photovoltaic plant (1) against rodent bite damage, wherein the photovoltaic plant (1) comprises several components, among them solar cells (2), a control unit (5), an inverter (7), an internal voltage supply means (13) and at least one microcontroller (9) which are interconnected via corresponding lines (3, 6, 8, 11). To provide such a device which offers an optimum protection against damage caused by bites and which entails as little maintenance and installation expenditures as possible, an ultrasonic transmitter (12) is provided for emitting an ultrasonic signal, and the ultrasonic transmitter (12) is connected to a microcontroller (9) of the photovoltaic plant (1) such that the ultrasonic signal emitted is controllable via the photovoltaic plant (1).

Abstract: A mobile device, upon user selection and actuation, transmits an ultrasonic frequency signal into the area surrounding the mobile device, at a signal intensity capable of being heard by animals present in such area, whereby the transmitted ultrasonic signal is suitable for use as a defense measure and, alternately, as a training measure for animals present in the transmission area.

Abstract: Disclosed are methods for affecting movement of a cockroach by attracting a cockroach to a specified location or repelling a cockroach from a specified location. One generates a cockroach wing-fanning sound adjacent the location and exposes the cockroach to the sound. Acoustic generators emitting wing-fanning sound are preferably incorporated into insect traps, insect bait stations and insect repelling stations.

Abstract: Systems and methods for detecting presence and movement of pests. Various embodiments of a pest detection system can be based on, for example, a beam-interrupt detector or a thermal imaging device. The beam-interrupt detection based system can provide functionalities such as counting of pests crossing a given beam. A plurality of such beams at different heights can also allow distinguishing different sized pests. The thermal imaging based detection system can provide functionalities such as tracking movement of pests. A recording can be triggered by detection of pest movement, thereby improving the efficiency of recording and reviewing information indicative of presence and movement of pests in a monitored area. Movement of pests can be monitored on a passive basis, or by providing a stimulus that induces movement.

Abstract: An electronic rodent repelling device includes a housing electrically coupled to an existing power supply source of the vehicle, a power conditioning circuit for receiving an input voltage signal from the existing power supply source, and a signal generator electrically coupled directly to the power conditioning circuit. The device further includes an amplifier electrically coupled directly to the signal generator for receiving the output signal and thereafter transmitting an amplified signal, and an ultrasonic transducer electrically coupled directly to the amplifier for emitting an ultrasonic output signal based upon receipt of the amplified signal.

Abstract: A method and system for detecting the presence of subterranean termites, involving use of a thermal imaging camera to scan the structure before installation of an acoustic sensor in order to quickly locate potential areas of subterranean termite infestation, and an acoustic sensor in the form of an accelerometer or the disclosed innovative acoustic sensors having a bandwidth of at least 100 Hz to 15 kHz to detect noises made by the subterranean termites. Information collected by the acoustic sensor may be transmitted to a portable mini-computer (pocket PC) for confirmation and to a central operations center for inclusion in a comprehensive database of termite data and information.

Abstract: This invention is directed toward a series of devices designed to scare away Great Blue Herons, raccoons, and other common koi pond predators through a combination of a motion detection system which triggers an auditory and/or movement response from a variety of common enemies of koi pond predators and fanciful creatures intended to frighten koi predators. The invention teaches the combination of the motion detector with the koi predator enemy replica, such that a koi pond user can economically and efficiently protect his/her pond without adversely impacting the visual appeal of a koi pond.

Abstract: A method and system for detecting the presence of subterranean termites, involving use of a thermal imaging camera to scan the structure before installation of an acoustic sensor in order to quickly locate potential areas of subterranean termite infestation, and an acoustic sensor in the form of an accelerometer or the disclosed innovative acoustic sensors having a bandwidth of at least 100 Hz to 15 kHz to detect noises made by the subterranean termites. Information collected by the acoustic sensor may be transmitted to a portable mini-computer (pocket PC) for confirmation and to a central operations center for inclusion in a comprehensive database of termite data and information.

Abstract: The invention relates to a pest repelling apparatus which is installable in a vehicle (10). The pest repelling apparatus includes a control unit (12), a plurality of transducers (20) operatively connectable to the control unit (12) to emit sound at an ultrasonic frequency, mounting means to mount the transducers to the vehicle (10) at spaced apart locations, and an electrical connector arrangement (14) to connect the control unit (12) to a power source of the vehicle. The invention extends to a vehicle (10) which includes a pest repelling apparatus installed therein. The pest repelling apparatus includes a control unit (12), and a plurality of transducers (20) operatively connected to the control unit (12) and positioned at spaced apart locations in the vehicle (10), the control unit (12) in use causing the transducers (20) to emit sound at an ultrasonic frequency.

Abstract: Systems and methods for detecting presence and movement of pests. Various embodiments of a pest detection system can be based on, for example, a beam-interrupt detector or a thermal imaging device. The beam-interrupt detection based system can provide functionalities such as counting of pests crossing a given beam. A plurality of such beams at different heights can also allow distinguishing different sized pests. The thermal imaging based detection system can provide functionalities such as tracking movement of pests. A recording can be triggered by detection of pest movement, thereby improving the efficiency of recording and reviewing information indicative of presence and movement of pests in a monitored area. Movement of pests can be monitored on a passive basis, or by providing a stimulus that induces movement.

Abstract: A method and system for detecting the presence of subterranean termites, involving use of a thermal imaging camera to scan the structure before installation of an acoustic sensor in order to quickly locate potential areas of subterranean termite infestation, and an acoustic sensor in the form of an accelerometer or the disclosed innovative acoustic sensors having a bandwidth of at least 100 Hz to 15 kHz to detect noises made by the subterranean termites. Information collected by the acoustic sensor may be transmitted to a portable mini-computer (pocket PC) for confirmation and to a central operations center for inclusion in a comprehensive database of termite data and information.

Abstract: Birds carry many parasites and other diseases, which pose a health risk to humans which come into contact with their habitat. However, ultrasonic waves agitate and deter birds and other pests from roosting in nearby areas. The disclosed device utilizes solar energy to power a battery pack, which in turn activates both a tone generator and its adjoining amplifier to create and emit the annoying ultrasound. In this way, birds are dissuaded from gathering in particular areas where the ultrasonic device is in use, and humans are provided a more healthy and disease-free environment.

Abstract: A computer based bird control system is provided. The bird control system utilizes an impactor that is attachable to a structure, such as an I-beam or other similarly sized and dimensioned metal object, to create an acoustic impact noise similar to a whacking of the structure. The impactor is preferably actuated at a random or a semi-random impact rate such as around once every ten seconds. The acoustic impact noise may be provided in addition to the playing of bird predator or other deterrent sounds maintained in audio files on the computer. The system also provides audio and/or physical bird presence detection within a monitored area. Detection of the presence of a bird may be used as a trigger for the actuation of the impactor and/or predator/deterrent sounds. Actuation of the impactor and/or sound files may be accomplished via a schedule through the use of timer files in addition to or in place of animal presence detection.

Abstract: A mosquito dispersing device having means for generating a mosquito dispersing pitch pattern having a frequency in the range of at least one of a wing beat frequency of a dragonfly and a wing beat frequency of a damselfly, means for generating a signal having a frequency of the mosquito dispersing pitch pattern for use with an amplifier, and means for amplifying the signal to power at least one speaker to produce vibrations of the mosquito dispersing pitch pattern in a dispersing area to rid the area of mosquitos.

Abstract: An acoustic warning or alerting system for directing an audible warning signal to at least one intended recipient, while reducing the chance that the warning signal will be heard by others within the proximity of the system. The system includes a modulator for modulating an ultrasonic carrier signal with a processed audio signal, a driver amplifier for amplifying the modulated carrier signal, and a parametric array of acoustic transducers for projecting the modulated and amplified carrier signal through a propagation medium for subsequent regeneration of the audio signal along a pre-selected projection path. The parametric array of audio transducers operates by employing the nonlinear interaction between high frequency sound components and the propagation medium to generate at least one highly directional beam of lower frequency sounds within the propagation medium.

Abstract: A radio wave system for repelling birds from aircraft that includes a directional radio wave transmitting rod, a frequency transmitter unit wired to the directional radio wave transmitting rod, and an activation switch in controlling connection with the frequency transmitting unit. The frequency transmitting unit generates and transmits radio wave signals, when the activation switch is in an on position, to the directional radio wave transmitting rod which emits a cone shaped radio wave signal in front of an aircraft. The cone shaped radio signal is emitted at a frequency detected by birds in flight which are deflected onto a flight path which avoids collisions between the birds and the aircraft.

Abstract: A system and a method avoids the collision of a vehicle with animals tending to cross the road before the moving vehicle. Such system comprises a visual system directly actuating a RF emitter, or more RF emitters, emitting directional sound waves with a frequency above 25,000 Hz. Sound waves are directed frontally though with a frequency decreasing from the center of the roadway towards the road edge, so as to lead the animal to move towards the road edge.