7 results about "Acoustic camera" patented technology

The application discloses an implementation method and device of an acoustic camera and electronic equipment, and the method comprises the following steps: step S1, a phase compensation slope tensor is calculated according to the microphone position, pickup angle and pixel point division of the acoustic camera; step S2, each microphone time domain signal is framed and windowed, the windowing result is summed according to the number of frames to be processed, time-frequency analysis is performed on the sum result, and the frequency domain signal of each microphone is obtained; step S3, the phase compensation slope tensor is used to perform phase compensation on the spectrum of each microphone by using the quantile method, and a display matrix is updated based on the compensated spectrum; and step S4, the display matrix is matched with an actual pattern, and a sound emitting object is accurately positioned.

A noise camera comprises a plurality of audio detectors such as microphones, which are spatially disposed with respect to a tracking camera. The plurality of audio detectors may be arranged to detect a location of a noise source in a field of view of the tracking camera, thereby allowing identification of a source of noise such as a vehicle emitting noise exceeding a predetermined threshold such as a legal limit. The noise camera may comprise one or more detection cameras for identifying a noise source by techniques such as number plate recognition for the example of a vehicle. A location of a noise source in the field of view of the tracking camera is determined from a time difference of arrival of the noise from the noise source detected by a plurality of the audio detectors. The time difference of arrival indicating an angle of the noise from the tracking camera may be mapped into video captured with the field of view of the tracking camera as one or more pixel location values. Documentary evidence generated from the noise camera can include the tracking video, noise source pixel location values comprising, for each of one or more tracking images of the tracking video, an indication of a location of a pixel of a dominant noise source in the tracking video. The documentary evidence may be processed to identify a path of the dominant noise source in the tracking video from the noise source pixel location values. From the path, a detection time at which the path of the dominant noise source in the tracking video is closest to a detection point in a field of view of a detection camera is determined. The noise source such as a vehicle is identified from images at the detection time.

Disclosed is an AI acoustic camera including an acoustic source localizing means unit of generating position-specific acoustic level data by determining a position of an acoustic source, an AI acoustic analysis unit of recognizing a type of acoustic source estimated as an abnormal acoustic source by extracting a regeneration time domain acoustic signal for the acoustic source with the determined position and AI-learning and recognizing an acoustic feature image of the extracted time domain acoustic signal, an object recognition unit of recognizing a type of object positioned in the acoustic source through image analysis of an area recognized as that the acoustic source is positioned, and a determination unit of determining the acoustic source as a true acoustic source when the type of acoustic source and the type of object have commonality.

Device (10) for the investigation and recovery of suspected objects in underwater areas, in particular munitions, comprising: - a supporting body (100); and - a gripping device (102) with at least two oppositely arranged gripper shells (104), wherein a receiving area (106) is formed between the two gripper shells, and - the gripping device is mechanically connected to the support body at a connection point (108), forming a gripping area (110) which extends from the connection point in a direction away from the support body, the device also - comprises at least one mechanically attached flushing nozzle (112) in the gripper area, wherein the flushing nozzle is configured to discharge a flushing medium for exposing the suspected object directed towards an area outside the gripping area, and - a suction pump (114) comprising a fluid-conducting connection to at least one suction nozzle (116), wherein the suction nozzle is arranged in the gripper area, in particular to provide sediment extraction close to the suspected object, characterized by the fact that the device (10) also an acoustic camera (124) for visual identification of the suspected object, wherein the acoustic camera is connected to the support body via an extendable mounting arm (126) in order to move the acoustic camera relative to the support body (100) with the extendable mounting arm, and / or has a measuring probe (128) for determining the position of the suspected object in an unexposed state, wherein the measuring probe is connected to the support body via an extendable probe arm (130) in order to move the measuring probe relative to the support body (100) with the foldable probe arm.

A partial discharge measurement system is disclosed. The present system comprises: a reference signal generation apparatus that is located in a real space and outputs a reference signal for phase correction; and an acoustic camera that measures partial discharge on the basis of a partial discharge acoustic signal generated from a target to be measured. The acoustic camera includes: an acoustic signal reception unit that receives the partial discharge acoustic signal generated from the target being measured; and a data processing unit that generates partial discharge acoustic data for the partial discharge acoustic signal and phase-corrects the partial discharge acoustic data on the basis of a phase difference between the reference signal and the partial discharge acoustic signal, so as to generate phase-corrected partial discharge acoustic data.

The invention relates to an acoustic camera design method and system based on a multi-phase filter, and belongs to the technical field of acoustic measurement and signal processing. The method comprises the following steps: acquiring an acoustic time-domain signal, calculating the delay inequality of the acoustic time-domain signal reaching each microphone, and obtaining a phase compensation coefficient of a multi-phase filter; sub-filtering branches of the multi-phase filter are configured, and delay phase compensation is carried out; calculating a time domain cross-correlation function of the acoustic time domain signal, accumulating cross-correlation values of the time domain cross-correlation function at a corresponding time delay, and placing the obtained values in a designed space matrix to obtain a sound source localization heat map; and positioning the sound source according to the heat map peak value.

1. Name of the designed product: Acoustic camera. 2. Use of the designed product: To let the observer see the position of the sound source in the sound field. 3. Design points of the designed product: In shape. 4. Picture or photo that best shows the design points: Front view.