4 results about "Vector sensor" patented technology

1. The name of the design product: embankment hidden danger detection vector sensor. 2. The use of the design product: used in the field of water conservancy engineering, specially buried or placed in the interior and surface of the dam, and the hidden dangers such as seepage and cavity are detected by sensing the vector information of physical field. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: front view.

The application discloses a full-space acoustic vector sensor array calibration method and system, which comprises the following steps: constructing an acoustic vector sensor array, arranging at least three non-coplanar calibration sound sources around the array; obtaining acoustic signals, performing frequency domain processing, and obtaining frequency domain data of array sound pressure channels and particle velocity channels; constructing a first loss function with phase difference information as a physical constraint from the frequency domain data of the array sound pressure channels, training a position error estimation neural network established, and outputting position error parameters of each vector sensor in the array; updating the geometric model of the array, calculating the incident azimuth and elevation angle of the calibration sound source relative to each array element; constructing a second loss function with energy projection information as a physical constraint from the incident azimuth and elevation angle and the frequency domain data of the particle velocity channels, training an orientation error estimation neural network established, and outputting orientation error parameters of each vector sensor; and completing array calibration from the position and orientation error parameters.

This invention belongs to the field of sound field reconstruction and sound source identification technology. It discloses an equivalent source sound field localization method and system based on sparse sound intensity measurement. The method involves acquiring complex sound pressure and complex particle velocity at measurement points on a holographic surface using a vector sensor array, and calculating the measured sound intensity vector. A sound intensity transfer matrix is ​​constructed based on the equivalent source method, establishing a linear measurement equation between the measured sound intensity vector and the equivalent source intensity vector. Utilizing the spatial sparsity of the equivalent source intensity, the solution for the equivalent source intensity vector is transformed into an L1 norm sparse optimization problem, solved using a convex optimization algorithm to obtain the optimal equivalent source intensity vector. Based on the optimal equivalent source intensity vector, the acoustic quantities at any point in the target sound field are reconstructed using a free-field Green's function. This invention utilizes the active component of the sound intensity vector to suppress uncorrelated noise and combines compressed sensing theory to improve the ill-conditioned nature of the inversion, achieving highly robust and accurate sound source localization and sound field reconstruction without the need for a reference microphone.

This invention provides a boiler water-cooled wall deformation and displacement measurement system and method, including a monitoring server and multiple multi-vector sensors. Each multi-vector sensor includes a frame and four sensing components. One sensing component is connected to each of the four sides of the frame. Each sensing component includes a laser rangefinder and a two-dimensional position detector, which are communicatively connected to the monitoring server. By installing a sensing component on each of the four sides of the frame, the two-dimensional position detector serves as both a displacement monitoring device and a reflective surface for the laser rangefinder opposite it. The laser rangefinder, while measuring the relative displacement between two adjacent multi-vector sensors, also provides a sensing spot for the two-dimensional position detector. The multi-vector sensors are arranged in a rectangular array on the backfire side of the boiler water-cooled wall, enabling overall monitoring of a large area of ​​the boiler water-cooled wall.