4results about How to "Reduce Design Risk" patented technology

The invention discloses a coaxial line light source for high-precision line scanning detection and a design method thereof.The light source is composed of two oblique-illumination line light sources which are in mirror symmetry, and a uniform line divergent beam emitted by an LED lamp panel of any oblique-illumination line light source irradiates a concave cylindrical reflector of the oblique-illumination line light source firstly and then irradiates the concave cylindrical reflector of the oblique-illumination line light source; the concave cylindrical surface reflector converges the uniform line divergent light beams into uniform line convergent light beams, the uniform line convergent light beams are turned and reflected to the plane reflector of the oblique illumination line light source, then are turned and reflected again by the plane reflector, are diffused by the elliptical light diffusion plate of the oblique illumination line light source, and finally irradiate on a light emitting surface G of the coaxial line light source in a crossed manner; and the light beams are superposed on the symmetrical center line of the light-emitting surface G to form an illumination line light beam with the characteristics of intersectionality, inclined irradiation and line uniformity. Compared with a traditional line light source, the coaxial line light source can be better applied to a high-precision line scanning detection scene.

The invention provides a method and system for determining ultimate bearing capacity of an ocean jacket type platform, and relates to the technical field of ocean engineering.The method comprises the specific steps that environmental parameters, structural parameters and load parameters of the platform are collected; based on dimensionless processing, generating a corresponding environmental influence index, a material influence index and a load index; carrying out fusion and correlation analysis on the three indexes to obtain a comprehensive bearing capacity evaluation index; and determining the ultimate bearing capacity of the ocean jacket type platform by combining the bearing capacity evaluation index and the safety coefficient of the material. According to the method, the environment influence index, the material influence index and the load index are fused through dimensionless processing and correlation analysis, the actual bearing capacity of the platform under the complex ocean condition can be reflected more accurately, and therefore the design risk is reduced. Besides, the final bearing capacity is determined by combining the safety coefficient of the material, so that the safety and reliability of the platform are improved, the maintenance cost is reduced, and the service life is prolonged.

The invention discloses a compression and decompression test platform and method based on special hardware, virtual electronic equipment and a storage medium, the platform is deployed in a computing system comprising a special compression and decompression hardware unit, and a kernel mode driving module is in communication connection with the special compression and decompression hardware unit. The user mode test program module is connected with the kernel mode drive module through a character device interface; registering a character device to create an interface with the dedicated compression / decompression hardware unit; in response to a user mode instruction received through character equipment, distributing a source data buffer area and a target data buffer area through a DMA-BUF HEAP mechanism; establishing a zero-copy shared memory channel of a user mode and a kernel mode; writing the to-be-tested data into a source data buffer area; allocating a shared memory buffer area and managing for compression and decompression operations by utilizing a DMA memory management mechanism of the kernel; and determining a test mode, processing the target and outputting a test result. Repeated development of test tools is avoided, and cost is saved.