443 results about "Directional sound" patented technology

The invention discloses a multi-dimensional anti-bird intelligent recognition method and system based on thermal imaging, and relates to the technical field of intelligent monitoring and ecological protection. Multi-modal data is collected through thermal imaging, visible light, millimeter wave radar and a voiceprint sensor, after PTP protocol synchronization and Kalman filtering preprocessing, 3-5-second tracks of birds are predicted by using an LSTM network, and the anti-bird intelligent recognition method and system based on the thermal imaging are obtained. And the cross-modal features are fused through a Transform architecture, so that 95% of classification accuracy is realized. A bird repelling strategy is generated in real time through edge calculation, and the model is updated through cloud federal learning. The system integrates an oil-electric hybrid unmanned aerial vehicle and a ground device, supports dynamic path planning based on a thermodynamic diagram and differentiated repelling of directional sound waves, laser stroboflash and the like, has the night recognition accuracy rate of 92% and the bird repelling response time of 0.8 second, and is suitable for scenes of electric power, airports and the like. Through multi-dimensional perception, dynamic modeling and eco-friendly expelling, the problems of poor environmental adaptability, single strategy and the like of a traditional scheme are solved, and the anti-bird efficiency and the ecological safety are improved.

The invention discloses an intelligent sound effect processing system for an automobile DSP (Digital Signal Processor) power amplifier, particularly relates to the field of optimization of a vehicle-mounted sound system, is used for solving the problem of insufficient sound effect consistency and intelligent adaptation in a dynamic sound field, and is characterized in that acoustic data are acquired in real time through a microphone array, and a three-dimensional acoustic geometric model is constructed by combining ray tracing and an image source method; sound wave propagation paths and dynamic changes are accurately captured; frequency bands of low-frequency, intermediate-frequency and high-frequency signals are divided, spectrum distribution differences and gain fluctuation centers of all seats are evaluated, and a sound field consistency adjustment coefficient is generated and used for guiding design and optimization of a directional beam forming filter, adjusting amplitudes and phases of all sound channels, forming directional sound beams and suppressing noise interference; therefore, the method can dynamically adapt to the acoustic environment change in the vehicle, improves the sound effect balance and high fidelity, and enhances the auditory experience and satisfaction of passengers.

The invention is suitable for the technical field of people flow density detection, and provides a scenic spot people flow density detection and early warning method and system, and the method comprises the steps: collecting real-time passenger flow data through an intelligent device disposed at a key node of a scenic spot; preprocessing the collected data and then constructing a multi-dimensional feature analysis model, wherein the multi-dimensional features comprise people flow composition features, behavior pattern features and environment coupling features; constructing a sample set based on feature vectors output by the multi-dimensional feature analysis model, outputting the sample set to a deep learning model to calculate a people flow density index, and triggering graded early warning when the people flow density index exceeds a first preset threshold value; generating multi-language voice early warning information according to the graded early warning, and performing regionalized broadcasting through directional sound field equipment; and when the people flow density index exceeds a second preset threshold value, generating a tourist shunting scheme including optimized path planning, thereby effectively improving the accuracy of people flow density detection and the timeliness of early warning.

The invention relates to the technical field of intelligent traffic monitoring, in particular to a toll station pedestrian and non-motor vehicle intrusion intelligent early warning system and method, a terminal layer comprises a sensing terminal composed of a camera, a hard disk video recorder and the like, and an early warning terminal composed of a directional sound post and the like; an edge computing unit is deployed on the edge layer, targets are detected in real time, tracks are tracked and classified, and cloud rechecking is triggered by low-confidence targets; the cloud layer utilizes a visual language large model to recheck a target, pre-mark data, generate an electronic fence and store data; the system adopts a dynamic grading early warning module, three-level early warning is triggered according to a target track, a position and staying time, and automatic degradation is carried out along with the presence of a worker; in addition, through a closed-loop optimization mechanism, a positive / false alarm feedback iteration visual small model is collected. According to the invention, cloud side-end cooperation is realized, multiple models and algorithms are fused, high-precision detection, real-time response, dynamic self-adaption and self-optimization capabilities are realized, the intrusion risk can be effectively prevented, and the safety management level of the toll station is improved.

The invention relates to the technical field of sound beam control, and provides a sound beam forming pointing control method based on crowd recognition and related equipment thereof. The method comprises the following steps: performing time-space synchronous acquisition and calibration on multi-modal sensor data to obtain a time-space aligned original data set, and performing layered signal enhancement on the original data set to obtain a visual feature tensor and an audio feature tensor; dense crowd detection and tracking are carried out according to the visual feature tensor to obtain a target crowd space-time trajectory matrix, and sound source localization and beam weight calculation are carried out in combination with the audio feature tensor to obtain a beam forming weight vector; performing multi-constraint dynamic optimization in combination with environmental parameters in the multi-modal sensor data to obtain an adaptive control parameter set, and finally performing real-time beam forming in combination with a loudspeaker sequence to obtain a directional sound field output signal. According to the invention, target detection, sound source localization and dynamic adaptive control are combined on the multi-source data, so that the beam direction is dynamically adjusted.

The invention relates to the technical field of safety equipment, in particular to a bird repelling method and a bird repelling device based on directional sound waves and biological warning sound, and the bird repelling method comprises the following steps: recording alarm sound of specific birds, and performing sound analysis on the recorded alarm sound; a sound synthesis technology is utilized to generate a sound signal which is similar to an original alarm sound but is adjusted, the generated sound signal is subjected to amplitude and frequency simulation to obtain a sound with a higher emergency degree, and the adjusted sound signal is sent to a target bird in a directional sound wave mode through a directional wave sounder. Therefore, the purpose of expelling or warning is achieved. The bird repelling device mainly comprises a power management module, a directional wave sounder, an infrared sensor, a wireless communication module, a main control board and the like, and the main control board controls a steering engine to rotate to drive an infrared radar detector to detect surrounding birds. When birds are detected, the main controller can control the left-right steering engine and the pitching steering engine to emit directional sound waves in the direction where the birds are detected to expel the birds.

The invention discloses a method and system for guiding an old person to go home through a door lock, and the method comprises the steps: calculating a lost score value through a lost score model according to a condition that a target door lock A detects that the old person fails in continuous verification for multiple times and stays overtime in front of the door, and judging that the old person is in a lost state when the score value exceeds a threshold value, and obtaining a lost judgment result; according to the door lock A, encrypting and broadcasting the elderly biological characteristics to all the door locks, receiving confirmation information returned by the successfully matched door lock B, and obtaining a target room positioning result; according to the floor topological data of the door lock A and the door lock B, generating an optimal guide path, and obtaining path data containing a passing door lock sequence; according to the path data, controlling lamp strips along the way to be lightened according to a preset mode, and cooperating with a directional sound box to play voice guidance; and sending a reset instruction to the path door lock according to the fact that the door lock B detects that the old person successfully unlocks or arrives. According to the embodiment of the invention, convenient, efficient and intelligent door lock guiding can be carried out, and precise guiding and supporting for the elderly are realized.

Provided herein are system, method, and computer program product embodiments for providing an interactive visual representation of loudspeaker sound coverage in a venue. An embodiment enables temporal, spectral, and spatial audio metering from digital audio to venue acoustics. This technology can visualize audio capabilities of one or more loudspeaker arrays using light to provide visualization grouping of large audio channel outputs. This can allow spatial information to be visually represented by mapping directional sound to light beams.

The invention belongs to the technical field of microphones, and particularly relates to a microphone core and a microphone, the microphone core comprises a shell and at least one pickup assembly arranged in the shell; wherein the shell is provided with at least one pair of sound holes for sound waves to enter, each pair of sound holes are symmetrically arranged on opposite shell walls of the shell, and the sound pickup assembly can pick up sound wave signals entering the sound holes. According to the invention, at least one pair of sound holes for sound waves to enter is arranged on the shell, and each pair of sound holes are symmetrically arranged on the opposite shell walls of the shell, so that the sound pickup assembly can pick up sound wave signals entering from each sound hole, multi-directional sound pickup is realized under a single diaphragm structure, and the practicability is improved.

The invention relates to the technical field of sound reception, and discloses a system for multi-directional sound reception and noise reduction of a smart glasses microphone array, and the system comprises at least five microphones which are disposed at different positions of a smart glasses frame, and the first microphone is a unidirectional microphone, is located below the glasses frame, and is used for picking up the voice of a wearer; the second microphone and the third microphone are bi-directional microphones, are located right in front of the glasses frame and are used for picking up voice signals right in front of the wearer. The directivity weight of the microphone array is adjusted in real time through the dynamic optimization module, and the pickup effect of the target voice signal is enhanced preferentially. The voice enhancement module is matched to extract a target voice signal by using a Bayesian inference method, so that noise components in a mixed signal can be effectively separated, voice distortion is reduced, the definition and fidelity of the voice signal are remarkably improved, and the voice has better intelligibility in various complex noise environments.

The invention relates to a vehicle warning tone dynamic adjustment method and system based on multi-dimensional perception. According to the method, environment data are acquired, a multi-dimensional feature matrix is constructed, scene classification labels and sound field coverage parameters are analyzed based on the matrix, then an acoustic physical model is called to generate an environment self-adaptive acoustic parameter group, pedestrian behavior prediction and regional voice features are fused to implement multi-modal optimization on acoustic parameters to generate a prompt tone template, and the prompt tone is obtained. A directional sound field signal is synthesized through a beam forming technology, pedestrian response data is collected, finally, a parameter mapping rule and an acoustic physical model are continuously updated based on feedback information, a technical path of environmental perception, dynamic parameter adjustment, directional output and closed-loop optimization is formed, the self-adaptive capacity of the prompt tone system to complex traffic scenes is achieved, and the prompt tone system has a wide application prospect. While the warning effectiveness is guaranteed, the environmental interference is reduced, different regional cultural characteristics and pedestrian perception characteristics are considered, and the safety and environmental friendliness of human-vehicle interaction are integrally improved.

The application provides a sound amplification sound column with adjustable vertical direction. The sound column comprises multiple coaxial cylindrical wave mid-high sound boxes arranged vertically, a sound box connecting mechanism, and a sound column direction adjusting mechanism. The sound box comprises a box with a trapezoidal vertical section and a coaxial cylindrical wave mid-high module installed on the panel of the box. The coaxial cylindrical wave mid-high module comprises a midrange horn, a high-frequency module, and a midrange phase plate. The high-frequency module is embedded in the midrange phase plate, and the midrange phase plate is placed on the midrange horn. The sound column is composed of multiple coaxial cylindrical wave mid-high sound boxes arranged vertically, and the curvature of the cylindrical wave is accurately controlled through the connecting mechanism and the adjusting mechanism to realize continuous adjustment of the vertical direction.

The invention relates to an array microphone noise reduction recording method based on cascade noise reduction and blind source separation, which belongs to the technical field of voice signal processing and recording, and comprises the following steps: configuring a multi-channel array microphone, ensuring that the amplitude and phase of a channel signal are consistent, and collecting an original multi-channel voice signal; a weighted kernel function blind source separation algorithm is adopted, signal-to-noise ratio distribution characteristics of signals are extracted, kernel function weights are given, and target voice and interference signal components are obtained through decoupling of an independent component analysis model; executing target-oriented adaptive cascade noise reduction, locking the voice of a keynote speaker through directional pickup, reducing noise, filtering out reverberation, and enhancing the voice of a far-field target by combining a voice mask neural network with a far-field pickup algorithm in sequence; and processing the target voice through voice feature perception lossless coding and storing the target voice. According to the invention, stable acquisition of multi-channel signals, accurate separation of mixed signals and layered suppression of noise reverberation are realized, the signal-to-noise ratio and definition of far-field voice are significantly improved, and the method is suitable for single-person speaking or multi-person dialogue scenes.

According to the intelligent voice broadcast system and method for the elevator, elevator car environment data are collected in real time through a multi-source heterogeneous sensor set, and passenger density distribution and movement tracks are calculated through fusion of a millimeter wave radar and a 3D visual sensor; physiological features of a handrail contact area are detected through a biological impedance sensor so as to judge the health state of a passenger, and the current signal-to-noise ratio is dynamically calculated and the voice frequency band is optimized through an environment noise analysis module. Therefore, by constructing a technical system of'multi-modal perception-edge intelligent decision-cross-modal interaction 'and adopting innovative means such as millimeter-wave radar and biological impedance fusion sensing, deep reinforcement learning of a dynamic strategy and a phased array directional sound field, the problems of broadcast stiffness, poor scene adaptability and privacy potential safety hazards are solved. According to the system and method, accurate passenger feature recognition, dynamic voice content generation and multi-channel collaborative feedback are achieved through two-dimensional innovation, and the intelligent level and service efficiency of elevator voice interaction are improved.

A directional sound pickup method and a device implement targeted sound pickup for one or more targets without affecting video recording. An electronic device may identify a directional sound pickup target based on selection of a target object (or a region) in a viewfinder frame so that during audio recording, a sound signal from an identified target is picked up in a targeted manner, for example, a sound intensity of the directional sound pickup target is enhanced and / or a sound intensity of another target is weakened, or a sound intensity of another target is excluded.

The utility model provides an on-line monitoring tube expansion prevention protection device for a round tube belt conveyor, and belongs to the technical field of conveyors. The online monitoring tube expansion prevention protection device for the circular tube belt conveyor comprises ultrasonic directional transmitters and ultrasonic directional receivers, the ultrasonic directional transmitters and the ultrasonic directional receivers are arranged on the two sides of the circular tube belt conveyor respectively, the number of the ultrasonic directional transmitters and the number of the ultrasonic directional receivers on each side are both two, and the number of the ultrasonic directional transmitters and the number of the ultrasonic directional receivers on each side are both two. The ultrasonic directional transmitter and the ultrasonic directional receiver which are in the opposite state are at the same height, and the ultrasonic directional transmitter, the ultrasonic directional receiver, the coal feeder and the round pipe belt conveyor are all connected with a round pipe belt conveyor PLC. According to the utility model, directional sound wave transmission and feedback receiving are combined with PLC control of the circular tube belt conveyor, so that the device has the advantages that the accumulation condition of materials in the rubber belt in the running and conveying process can be monitored on line in real time, and tube expansion is prevented fundamentally.

The invention provides a tunnel drilling sound wave emission acoustic system structure and a working method thereof.The tunnel drilling sound wave emission acoustic system structure comprises an emission dipole, an emission monopole, an integrated circuit structure, a walking encoder, a gyroscope and an emission skeleton assembly, the emission skeleton assembly is provided with a containing cavity, and the emission dipole, the walking encoder, the gyroscope and the emission monopole are arranged in the containing cavity; the transmitting dipole is used for transmitting two directional sound waves, and two sound wave channels are perpendicular to each other; the emission monopole uniformly emits sound waves to the periphery of a drill hole in all directions; the integrated circuit structure is used for controlling the transmitting dipole and the transmitting monopole to transmit different types of sound waves; the walking encoder is used for recording the moving speed of the structure body in the drill hole so as to calculate the position of the structure body in the drill hole at each moment; the gyroscope is used for recording the pointing direction of the structure body so as to obtain the azimuth angle of the geologic body. The structure is ingenious, and the detection range can be widened.

The voice directional enhancement method comprises the steps that a current frame and a staring direction of mixed voice are acquired, and the mixed voice is acquired by a microphone array; constructing a direction feature based on the current frame of the mixed voice and the gazing direction, and constructing an audio feature based on the current frame of the mixed voice; determining a current frame mask according to the direction features and the audio features; and determining a target enhanced voice of the current frame according to the current frame mask, the current frame of the mixed voice and the plurality of historical frames of the mixed voice. In the embodiment of the invention, the mask of the current frame is generated under the guidance of the gazing direction, so that the target voice can be accurately separated from the mixed voice. Besides, based on the current frame mask and the current frame of the mixed voice, the target voice enhancement is performed frame by frame from the overall characteristics of the mixed voice by referring to a plurality of historical frames, so that the accuracy of the target enhanced voice of the current frame can be effectively improved, and thus the accuracy of directional pickup is improved.

The invention relates to a focusing type voiceprint acquisition sensor, and discloses a sensor which realizes accurate focusing of equipment operation sound, reduction of environmental noise interference, improvement of sound signal quality, multi-dimensional voiceprint feature extraction and convenience for subsequent equipment operation state analysis through cooperation of an array type multi-direction sound acquisition module and a focusing concave mirror. The device is characterized in that the device is composed of a sound insulation cover, a sound collection hole, a voiceprint collection cylinder, a multi-angle voiceprint collection cylinder, a connecting rod, a sound collection module, a voice processing module and a focusing concave mirror, one end of the voiceprint collection cylinder is arranged on the multi-angle voiceprint collection cylinder and communicates with the multi-angle voiceprint collection cylinder, and the other end of the voiceprint collection cylinder is of an opening structure; the sound insulation cover is arranged at the other end of the voiceprint collection cylinder, sound collection holes which are densely arranged are formed in the sound insulation cover, the sound collection holes are tiny holes, the sound collection holes are close to the upper edge of the sound insulation cover, and the focusing concave mirror is arranged in the voiceprint collection cylinder and corresponds to the sound collection holes.

The invention discloses a directional sound wave loudspeaker control method based on MEMS, and relates to the technical field of stereo loudspeakers. By initializing the MEMS array, the microphone array and the control circuit, stable operation of the system is ensured. The microphone array accurately locates a sound source by using a TDOA or beam forming algorithm, and the control circuit calculates phase and amplitude parameters of the MEMS unit to realize high-precision beam forming. The MEMS acoustic metasurface array transmits directional sound wave beams according to parameter adjustment, a microphone in a target area monitors sound wave quality in real time, and a control circuit dynamically and finely adjusts array setting through a feedback optimization algorithm to adapt to environmental changes. The system has the advantages of high-precision positioning, efficient beam forming, real-time optimization and low power consumption, is suitable for scenes such as smart home and virtual reality, and remarkably improves sound wave directionality and quality stability.

The invention discloses a directional sound production screen, a display device and a preparation technology of the directional sound production screen, and the preparation technology of the directional sound production screen comprises the steps: preparing a vibration layer: etching a plurality of first grooves in a first UTG substrate layer through a TGV technology; preparing a non-vibration layer, wherein a microstructure is integrally formed on the second UTG base material layer through a TGV technology; the frame of the vibration layer and the frame of the non-vibration layer are attached, and the microstructures are correspondingly embedded into the first grooves after attachment. According to the invention, the microstructure is processed and combined with the nested structure of the groove through the TGV punching technology, so that the processing difficulty is reduced, and the processing precision is easy to control.

The invention relates to the technical field of ring main units, in particular to a sound-light alarm system for preventing misoperation of an all-insulation inflatable ring main unit. Comprising a multi-mode sensing module; an intelligent decision module; a sound-light alarm module; and a mechanical interlocking module. The sound-light-touch three-mode collaborative warning strategy is innovated, and the warning signal identification degree in a complex environment is enhanced through synchronous activation of directional sound waves, double-color stroboscopic light and vibration feedback; by combining dynamic audio adjustment, spectrum adaptive illumination and an operation behavior self-learning algorithm, intelligent dynamic adjustment of a warning strategy is realized, misjudgment of manual operation is effectively reduced, and an efficient risk intervention mechanism covering multiple senses is constructed; according to the invention, through a logic AND operation mechanism of high-voltage live detection and grounding knife switch position monitoring, a core high-risk scene that the power supply side is live and the grounding knife switch is closed is accurately captured, and the problem of missed judgment caused by single condition monitoring in the prior art is effectively solved.

The invention provides an intelligent sound box audio enhancement method based on a magnetic attraction position and environment characteristics. According to the method, the current magnetic adsorption position type and magnetic adsorption angle of the sound box are detected, and the surrounding environment characteristic data and environment noise data are acquired, so that sound effect optimization is realized. And determining material characteristics of the reflecting surface according to the type of the magnetic adsorption position, calculating a sound wave reflection path in combination with room structure characteristics, adjusting reverberation time and reflection gain of the audio signal, and generating a sound diffusion mode for space sound field reconstruction. Meanwhile, different frequency bands are compensated according to the distribution of the sound absorption materials, and a frequency response compensation curve is generated to enhance the sound effect of the attenuation frequency band. Calculating a sound wave radiation path according to the magnetic adsorption angle, and adjusting the phase difference and gain ratio of the sounding unit to realize a directional sound field; and the high-frequency gain and the propagation attenuation are dynamically adjusted in a darker light or high-humidity and low-temperature environment. In addition, a counteracting signal opposite to the noise is generated through spectral analysis and is superposed into an audio signal, so that an active noise reduction effect is achieved.

Provided herein are system, method, and computer program product embodiments for providing an interactive visual representation of loudspeaker sound coverage in a venue. An embodiment enables temporal, spectral, and spatial audio metering from digital audio to venue acoustics. This technology can visualize audio capabilities of one or more loudspeaker arrays using light to provide visualization grouping of large audio channel outputs. This can allow spatial information to be visually represented by mapping directional sound to light beams.

The invention discloses an AI voice assistant semantic enhancement method oriented to an education scene, and the method comprises the following steps: S1, collecting classroom voice signals in real time through an annular multi-microphone array which is installed at the edge of a blackboard in an embedded manner, and obtaining the real-time three-dimensional coordinates of a teacher through a UWB positioning module; s2, constructing a spatial sound source mapping model based on the three-dimensional coordinates of the teacher; s3, acquiring blackboard writing character content through a visual sensor mounted on the side edge of the blackboard; s4, injecting the extracted feature keywords into a dynamic term library generation module to generate a standardized teaching instruction, and synchronizing the standardized teaching instruction to student terminal equipment; and S5, when detecting that the confidence of the voice instruction is lower than a preset threshold value, jointly analyzing the time sequence characteristics of the lip movement track and the blackboard writing handwriting to perform semantic completion. According to the method, an intelligent semantic analysis system with acoustic enhancement, term adaptation and multimode verification is constructed, and the semantic distortion problem caused by environmental interference in traditional speech recognition is eliminated through directional pickup and noise suppression of an intelligent array.

The invention belongs to the field of metal roof waterproof defect detection, and particularly relates to a metal roof waterproof defect real-time detection system based on multi-sensor fusion. The invention discloses a metal roof waterproof defect real-time detection system based on multi-sensor fusion, and the system comprises an acquisition module which comprises an ultrasonic detection assembly, a directional sound acquisition assembly, a visual image acquisition assembly, and an optical grating; the ultrasonic detection assembly is arranged on the side face of the roof and used for emitting ultrasonic waves and receiving reflected signals. The grating is arranged corresponding to the ultrasonic detection assembly and is used for emitting light beams to the roof when the ultrasonic detection assembly emits ultrasonic waves; and the visual image acquisition assembly and the directional sound acquisition assembly are carried on the movable holder. According to the scheme, through combination and cooperation of multiple detection principles, through the stages of initial detection, precise verification and the like, the recognition precision and efficiency are improved, the problem that in a metal roof overlapping or splicing scene, the detection efficiency of the waterproof defect of the metal roof is low is solved, and full-scene efficient detection is achieved.

The invention discloses a sleep-aiding method for achieving on-site feeling by adjusting the direction of sound waves, and the method comprises the steps: automatically / intelligently controlling the angles of a loudspeaker and a waveguide tube through a sleep-aiding sound box, or manually adjusting the angles of the loudspeaker and the waveguide tube in the sleep-aiding sound box, and then reflecting the sound waves emitted by the loudspeaker through the waveguide tube. The sound wave propagation direction is adjusted to realize directional sound production, so that the formed sound produces strong sound pressure in a certain direction, and a part of sound felt by a user can enter a three-dimensional space outside the sound box by virtue of secondary reflection of a ceiling or a wall or a floor of a room, so that the user can sleep by himself / herself. Therefore, the sound subjectively felt by the user is not from the self-sleep sound box but from the top or the side part of the room, a more natural and relaxed atmosphere is created, the purpose of on-site feeling is achieved, and the sleep aiding effect is further improved.

The invention relates to the technical field of directional pickup, and discloses a directional pickup method and device, computer equipment and a medium, and the method comprises the steps: obtaining time domain voice signals collected by at least two microphones, and carrying out the time-frequency conversion; calculating an observation phase difference of each frequency point, and determining a target theoretical phase difference according to a target pickup direction specified by a user and the geometric parameters of the microphone; encoding the target theoretical phase difference into a query vector, encoding the observation phase difference into a key vector, and generating a space confidence mask through a geometric cross attention mechanism; and filtering the frequency domain signal by using the mask, and outputting enhanced voice in a target direction through inverse time-frequency transformation. According to the invention, through an attention mechanism guided by physical prior, the problem of phase winding is effectively solved, and high-robustness and high-fidelity speech pickup in any direction is realized in a strong reverberation and low signal-to-noise ratio environment.

The invention relates to a traffic information voice broadcast method and system based on the LTE-V technology, and belongs to the field of intelligent traffic, and the method comprises the steps: receiving traffic event information, and calling a monitoring camera near an event point; inputting voice information by a commander, performing active noise reduction processing on the voice information, and determining whether voice speed reduction and keyword repeated enhancement processing are increased or not; performing three-layer matching on the voice information based on a spatial feature library, an event feature library and a plan library to generate a point-to-point directional voice instruction; and dynamically generating an event early warning message set through the RSU, broadcasting the event early warning message set, and carrying out anti-interference processing on the vehicle-mounted equipment. According to the invention, the event positioning and plan calling time is shortened through a three-layer matching algorithm, the traffic event handling response efficiency is improved, and the misoperation rate is reduced through a panic index triggering mechanism; and on the basis of dynamic filtering of the vehicle driving direction and distance, invalid early warning is reduced, and early warning timeliness is ensured.

The intelligent bird repelling system comprises a detection module and a repelling module, the detection module comprises an infrared camera and a controller, and the input end of the detection module and the input end of the repelling module are both electrically connected with a power module. The output end of the detection module and the output end of the expelling module are electrically connected with an Internet of Things monitoring management module. The detection module, the repelling module, the power supply module and the Internet of Things monitoring management module are arranged to jointly form the intelligent bird repelling system, the system has the advantages of accurate detection, effective repelling, remote monitoring, all-weather power supply and the like, and the circuit transmission fault problem caused by bird damage to the power tower can be remarkably reduced; the birds are repelled through the repelling module by adopting directional sound waves on the basis of the principle that the birds are sensitive to sound waves with specific frequency and strength, the measure is a non-destructive method, is friendly to the surrounding environment, does not cause the problems of stress and death to bird flocks, and is high in environmental protection property of the whole system.