31results about How to "Real-time separation" patented technology

The invention discloses a real-time sound field separating method for measuring by the adoption of single-side sound pressure and vibration velocities. The real-time sound field separating method for measuring by the adoption of the single-side sound pressure and the vibration velocities is characterized in that a measuring plane is arranged between a target sound source and an interface sound source, and sound pressure time-domain signals and vibration velocity time-domain signals of grid points on the measuring plane are synchronously collected; two-dimensional space Fourier transform is respectively conducted on the sound pressure time-domain signals and the vibration velocity time-domain signals to acquire sound pressure time-domain wave number spectra and vibration velocity time-domain wave number spectra of wave numbers; then sound pressure time-domain wave number spectra independently radiated on the measuring plane by the target sound source are timely separated through the sound pressure time-domain wave number spectra, the vibration velocity time-domain wave number spectra and a known time-domain impulse response function, and accordingly sound pressure time-domain signals independently radiated on the measuring plane by the target sound source are acquired. Only one measuring plane is needed, a deconvolution process does not exist, and therefore the real-time sound field separating method for measuring by the adoption of the single-side sound pressure and the vibration velocities is simple in achieving mode, high in stability and capable of being used for conducting field analyses of the time-varying radiation characteristic of the target sound source under the noise interference environment.

The invention discloses a voice detection method based on multiple sound areas, the method is applied to the field of artificial intelligence, and the voice detection method provided by the inventioncomprises the following steps: obtaining sound area information corresponding to each sound area in N sound areas; generating a control signal corresponding to each sound area according to the sound area information corresponding to each sound area; processing the voice input signal corresponding to each sound area by adopting the control signal corresponding to each sound area to obtain a voice output signal corresponding to each sound area; and generating a voice detection result according to the voice output signal corresponding to each sound area. The invention further discloses a voice detection device and a storage medium. According to the invention, the voice signals from different directions can be processed in parallel based on the plurality of sound areas, and the voice signals in different directions are reserved or suppressed through the control signals in a multi-sound-source scene, so that the voice of each user can be separated and enhanced in real time, and the accuracyof voice detection is improved.

The invention discloses a method and device for separating and extracting multiple signals, and relates to a method and device for direction finding, digital beam forming, signal separation, automatic identification and continuous demodulation of multiple signals in the field of communication reconnaissance. It consists of antenna array, antenna switch array, nine-channel receiver, post-processing module, multi-signal separation and demodulation module, power supply and other components. It uses the spatial spectrum estimation and direction-finding technology based on array signal processing to obtain the direction of arrival of electromagnetic signals, calculates weighted vectors and sets hardware devices through digital beamforming and blind beamforming methods, so as to detect multiple signals of the same frequency or different frequencies arriving at the same time. The signal is filtered in the spatial domain, and the separated multi-channel signals are automatically identified and continuously demodulated and output. It has the characteristics of high interference suppression, fast processing speed, low cost, convenient operation and maintenance, etc. It is especially suitable for multi-signal separation and extraction devices in communication countermeasures, intelligence reconnaissance, radio monitoring and other occasions.

The invention discloses a defect detecting method based on ultrasonic flaw detection. The method comprises the following steps: 1, acquiring an ultrasonic echo signal and uploading the ultrasonic echosignal synchronously; 2, determining wave crests and wave troughs; 3, eliminating extreme points; 4, dividing the signal: determining a time interval between every two adjacent extreme points, judging dividing points, determining sampling moments of the dividing points, judging signal division, sorting the dividing points and dividing the signal; 5, judging signal separation and performing signalseparation; and 6, identifying a defect. The method is simple in steps, reasonable in design, convenient to implement and good in using effect; the judgment of the dividing points and the determination of the sampling moments of the dividing points are achieved by performing threshold judgment on the time interval between every two adjacent extreme points, and the ultrasonic echo signal is divided; then signal separation judgment and signal separation are respectively performed on every divided signal, and independent ultrasonic echo signals at multiple defect positions in the same ultrasonicecho signal can be quickly and accurately identified.

The invention belongs to the field of environmental protection and the field of water conservancy engineering and particularly relates to an environment-friendly seawater enteromorpha collecting and treating device. The environment-friendly seawater enteromorpha collecting and treating device comprises an offshore collecting device, an onshore collecting device and an enteromorpha treating device.By specific arrangement of each part, efficient collection of offshore and onshore enteromorpha is realized, and steps of crushing, drying, grinding into powder, temporary storage and the like are realized in the device directly after collection, so that efficient collection and treatment of algae such as enteromorpha are realized, and turning harms into benefits is truly realized.

A disclosed apparatus for utilizing natural cold source to realize seawater desalination comprises a glycol aqueous solution storage device communicated with natural cold wind at the exterior and connected with a supercooler via pipelines in a parallel manner; the apparatus also comprises a seawater zone of which the outlet port is connected with a shell-and-tube heat exchanger channel; the output pipe of the shell-and-tube heat exchanger channel is connected with a pretreatment device; the output end of the pretreatment device is connected with the supercooler; the output pipe of the supercooler is successively connected with a sonocrystallisation promoting device and an icy slurry separation device; the output end of the icy slurry separation device is provided with an ice crystal outlet pipe; the lower end of the ice slurry separation device is provided with a water returning pipe; the water returning pipe is connected with one end of a backflow channel of the shell-and-tube heat exchanger channel; and the other end of the shell-and-tube heat exchanger channel is connected with the seawater zone in an output connection way, so that continuous cycle of the apparatus is realized. The apparatus overcomes the disadvantages that conventional seawater desalination technologies are relatively high in cost, system equipment land occupy large area and a large amount of fossil energy is consumed, the natural cold energy of air in winter in the north is fully utilized, the fossil energy is saved, and the apparatus has the advantages of being good in heat exchanging performance, high in system efficiency, simple, capable of continuously operating for preparing ice slurry and recycling cold energy, and the like.

The invention discloses an echo signal separation method for ultrasonic flaw detection. The method comprises steps of: first, acquisition and synchronous uploading of an ultrasonic echo signal: an ultrasonic flaw detection device performs ultrasonic detection on a tested object, acquires an ultrasonic echo signal F(t) of the tested object, and synchronously transfers the acquired ultrasonic echo signal F(t) to a data processing device ,wherein the ultrasonic echo signal F(t) comprises ultrasonic echo signals of positions of K flaws of the tested object; second, signal sparse and decomposition;and third, echo signal separation: the data processing device separates the ultrasonic echo signal F(t) according to K optimal matched atoms in an iteration decomposition optimal atom set, and acquires K separation signals. The method has simple steps, is reasonable in design, is easy to realize, has good use effect, and conveniently, rapidly separates overlaid signals in multiple flaw positionsin the same ultrasonic echo signal through signal sparse decomposition.

The invention provides an air-cooled motor loss separation device and a loss separation method thereof. The device comprises a wind speed detector and a wind temperature detector which are arranged ina motor ventilating duct, a laser and a sonic sensor which are respectively arranged on the inner side and the outer side of a stator slot wedge, a current detector and a voltage regulator which areconnected with a phase winding of a stator, and an analysis device and a display which are arranged on a motor shell, and the wind speed detector, the wind temperature detector, the laser, the sonic sensor, the current detector, the voltage regulator and the display are all connected with the analysis device. Various losses of the air-cooled motor can be measured through the separation device andseparated according to the loss separation method, the accuracy of loss measurement is improved, the loss measurement period is shortened, and an objective basis can be provided for design of an air-cooled motor cooling system.

The invention discloses a radiator for power electronic equipment. The radiator comprises a shell, an opening group, a pipe body group and a filling pipe, the shell comprises a cover plate and a bottom plate, the cover plate and the bottom plate are combined, and a cavity is formed in the shell. A first capillary structure and a second capillary structure are arranged in the cavity. The at least one hole group is located on the cover plate. Each open pore group comprises a first open pore and an odd number of second open pores. And the pipe body groups are in one-to-one correspondence with the opening groups. The number of the pipe bodies in the pipe body sets is half of the sum of the number of the first open holes and the number of the second open holes in the open hole sets where the pipe bodies are located, each pipe body is provided with two ports, in the same pipe body set, the two ports of one pipe body are communicated with one first open hole and one second open hole of the corresponding open hole set where the pipe body is located, and the two ports of the other pipe bodies are communicated with the two second open holes of the corresponding open hole set where the pipe body is located. The radiator for the power electronic equipment is high in radiating efficiency and particularly suitable for the condition that a heat source is vertically or obliquely installed.