10 results about "Acoustic shock" patented technology

The invention relates to an acoustic-seismic combined monitoring method and device for mountain river bed load, and the device comprises a sensing plate which bears the impact of river bed load particles, a seismic detector which collects a vibration signal, and a plurality of microphone elements which independently collect an acoustic signal. The method comprises the following steps of: extracting first-motion waves of a plurality of collected sound signals, passing through the amplitude of each node of a sensing plate, and generating a sound source intensity distribution image, thereby realizing the identification of the spatial position of a bed load on the sensing plate, and calculating a vibration signal wave packet through a system amplitude threshold value; constructing a correlation function to obtain the maximum positive amplitude of a vibration signal wave packet, calculating the particle size of bed load particles, correcting the eccentric error of the vibration signal, improving the recognition precision of the bed load particle size, and further calculating the sediment transport rate in real time. According to the method, the sound signal and the vibration signal are combined, the eccentricity error of the high-frequency geophone signal is recognized and corrected through the spatial position, the recognition precision of the grain size of the bed load is improved through the corrected geophone signal, and inversion calculation of the sediment transport rate is achieved.

The invention relates to the technical field of trenchless engineering, and discloses a long-distance heat distribution pipeline pipe-jacking track control system for complex geology, which comprises an ultrashort pulse laser used for generating a stable laser plasma channel along a pipe-jacking design axis as an absolute linear reference; the track correction module is used for correcting the accumulated error of the inertial navigation unit on line according to the detection result of a position sensitive detector on the pipe jacking machine on the channel; the sensing array self-calibration module is used for carrying out on-line self-calibration of three-dimensional coordinates on the distributed optical fiber earth sound sensing array laid along the line by using acoustic shock waves generated during channel generation; and the geological feed-forward module is used for processing the tunneling vibration signal by using the calibrated sensing array to generate a front geological model. According to the method, the problems of inertial navigation error accumulation and insufficient geological prediction capability are solved, and the precision and stability of long-distance pipe jacking track control are remarkably improved.

The invention belongs to the technical field of soft soil foundation treatment, and particularly relates to an air jet flow-high-frequency sound wave synergistic effect soft soil foundation anti-clogging drainage device and method.The air jet flow-high-frequency sound wave synergistic effect soft soil foundation anti-clogging drainage device comprises an air compressor and a main air path connected with the air compressor and further comprises a plurality of drainage plates, and each drainage plate is provided with a spiral air pipe; the main gas circuit is connected with a spiral gas pipe through a plurality of branches, a Helmholtz resonance nozzle is arranged on the spiral gas pipe, the drainage channel is provided with a gas-liquid dual-purpose pump, the tail end of the drainage channel is communicated with a water collecting well, the water inlet end of the drainage channel is connected with each drainage plate through a connector and a drainage branch, and the water outlet end of the drainage channel is connected with the spiral gas pipe. According to the device, a desilting-(acoustic shock) dehydration-drainage integrated design method is adopted, and while filter membrane clogging of the plastic drainage plate is effectively removed, separation of bound water (or attached water) in sludge is promoted, which is the key to improvement of drainage efficiency, guarantee of consolidation quality and shortening of construction period. The problems of filter membrane clogging and low drainage efficiency of a traditional plastic drainage plate in soft foundation treatment are successfully solved. Even under the working condition of low water content, efficient desilting can be achieved, and the drainage consolidation quality and efficiency of the soft foundation are remarkably improved.

The partial or full dehydration of organic or inorganic matter containing water by induction of matter into a vacuum and processing matter through a specially designed acceleration channel is disclosed. The inducted matter accelerates in air from zero speed to sub-sonic speed to reach supersonic speed. As the material transitions the sound barrier, it is subject to acoustic shock waves and an instant negative pressure drop occurs. The sound waves disintegrate, disinfect the material and extract part or all moisture from any organic or inorganic material.

Systems and methods for treatment using acoustic shock waves within an enclosed negative pressure chamber to fragment or otherwise to modify plaque in a patient's penile shaft.

The present application relates to the technical field of automatic control and sensing data processing, in particular to a wisdom target range cooperative control system based on multi-modal perception, the system comprises a cooperative control module, which generates cluster cooperative instructions based on tactical logic and issues them to target nodes; a multi-modal perception execution module, which drives target actions in response to the instructions, and generates accurate impact point coordinates by multi-modal fusion calculation of acoustic shock time difference signals, taking the on-off signal of the target surface medium as the trigger reference; and a state feedback module, which receives hit data and renders local or global battle damage views of the target site; the present application solves the problems of poor anti-interference and inability of dynamic cooperation of single target reporting by multi-modal feature fusion calculation and wireless ad hoc network node scheduling, and has the beneficial effects of high target reporting accuracy, strong anti-interference and support for large-scale high-fidelity tactical exercises.

The invention provides a municipal road cavity detection method based on artificial intelligence, and belongs to the technical field of road cavity detection.The municipal road cavity detection method comprises the steps that a sound shock excitation device and a seismic wave sensor array are arranged in a detection area to synchronously collect double-source detection data, and signal preprocessing is conducted through band-pass filtering and a wavelet denoising algorithm; a sparse representation algorithm is adopted to convert into a sparse matrix, a condition number is optimized through a conjugate gradient method, space block splitting and global optimal registration fusion based on convex optimization are carried out on optimized data, principal component analysis dimension reduction is applied to extract a fusion feature matrix, a pre-trained convolutional neural network model is input to obtain a preliminary detection result, and a final detection result is obtained. And when the confidence coefficient is insufficient, calculating and optimizing a parameter vector through a sound shock parameter adjustment function and a seismic parameter adjustment function according to the detection environment parameters, and reconfiguring equipment parameters to carry out secondary fine detection, so that the technical problem of low road cavity detection accuracy is solved.

Systems and methods for treatment using acoustic shock waves within an enclosed negative pressure chamber to fragment or otherwise to modify plaque in a patient's penile shaft.

The invention discloses a reusable acoustic-seismic-electric sensor mounting device and a reusable acoustic-seismic-electric sensor mounting method. The device comprises a cylindrical shell, a waveguide rod, an acoustic vibration electric sensor, a hole sealing liquid bag, a push cylinder, driving teeth, a fixing claw and a driving mechanism. The acoustic-vibration-electric sensor is fixed to a rear cavity of the push cylinder, one end of the waveguide rod is connected with the sensor, and the other end of the waveguide rod extends out of the shell and is inserted into a coal seam. The push cylinder drives the fixing claw to rotate through the driving rack and the driving teeth to be clamped into or withdrawn from the drilling wall; the front end of the push cylinder actively extrudes the hole sealing liquid bag, so that hole sealing liquid seeps from a guide hole in the front end of the shell, and tight coupling is achieved. And a wire passing pipe is arranged in the driving shaft to protect signal wire transmission. The method comprises the steps that the device is inserted into a drill hole, the driving shaft is rotated to synchronously unfold the fixing claws and extrude the hole sealing liquid bag, and reverse recovery is conducted after monitoring. The installation time is remarkably shortened, meanwhile, the recovery rate is increased, and the device is suitable for various drilling environments and has the advantages of being efficient, reliable and compatible in automation.