41results about How to "Break the limits" patented technology

The invention discloses a mechanical composite pipe lined with 825 nickel base alloy and a manufacturing method thereof. The mechanical composite pipe lined with the 825 nickel base alloy comprises an inner 825 nickel base alloy pipe and an outer low-carbon steel pipe. The manufacturing method comprises the following steps: after the inner 825 nickel base alloy pipe and the outer low-carbon steel pipe are shaft assembled, mechanical diameter expansion equipment is adopted for performing sectional type diameter expansion or continuous diameter expansion on the inner part of the assembled pipe; the diameter expansion quantity is enough to enable the inner 825 nickel base alloy pipe to generate plastic deformation, and the deformation quantity of the outer low-carbon steel pipe is close to the maximum elastic deformation; after the diameter expansion is completed, a reducing and sizing mill is adopted for performing reducing and sizing treatment on the outer part of the assembled pipe; the mechanical composite pipe is inspected after being subjected to diameter expansion at the inner part and reducing and sizing treatment at the outer part; and after the mechanical composite pipe passes the inspection, each of the pipe ends is cut by a certain size for build-up welding and subjected to groove processing treatment. The manufacturing method provided by the invention is not limited by the material strength of the inner and outer pipes, all needed is to change the reducing and sizing quantity of the outer part, and the effective combination of the inner 825 nickel base alloy pipe and the outer low-carbon steel pipe is realized.

The present invention relates to a method for estimating an infrared imaging system action distance under a complex background condition. Firstly, an infrared imaging system action distance estimating model which is effective towards the complex background condition is established and comprises an action distance equation and an action distance resolving method; secondly, an auxiliary imaging system is used for obtaining an infrared image with complex background to be studied; thirdly, the auxiliary imaging system is scaled for confirming the function of the system infrared radiation lightness related to imaging gray scale; fourthly, the infrared radiation lightness under the complex background at the entrance pupil of the auxiliary imaging system is determined; fifthly, the infrared radiation lightness transmitted for zero distance under the complex background is determined; sixthly, target infrared radiation lightness and target effective area are determined; seventhly, the curve ofthe relation between infrared radiation transmissivity and imaging distance is worked out; eighthly, related data is substituted in the action distance estimating model established by the present invention, and the calculation of the action distance of a target imaging system towards the target under the complex background is finished finally.

The present invention proposes a face recognition method and system in a natural walking state. The steps of this method are as follows: S1. The video screen of the shooting person's goal naturally walks; S2, detect each specific personnel goal, identify before and after identificationThe relationship between each specific personnel goal in the two frames, and update the ID mark of each specific personnel in each specific personnel in the personnel goals; S3, based on the target ID mark of each specific personnel, calculate each specific onesThe cumulative score of personnel goals and determine the specific personnel goals, allocate close -up cameras; S4, the spatial location of the target of specific personnel, and adjust the direction of the cameraFace extraction and recognition of the face image of the positive human face, recorded the results, and release the adjustable camera that can be adjusted at the same time.It is conducive to the identification scene of expansion of face recognition technology and break the limitations of face recognition technology.

The invention relates to a biological tissue multi-characteristic imaging method based on the acoustoelectric effect and acoustic radiation force. The method comprises the steps that the size of the focal spot of each focusing domain of an ultrasonic transducer under a focusing ultrasonic disturbance mode is measured, and the sequence that the focusing domains are scanned by focusing ultrasonic waves is determined; a low-intensity tracking pulse is emitted to the ultrasonic transducer, and under the condition that ultrasonic focusing is ignored, a boundary measurement voltage vector phi and anecho signal of the tracking pulse are obtained; when an excitation current reaches the wave peak or the wave trough moment, a high-intensity excitation pulse is emitted to the ultrasonic transducer,so that an emission and scanning mechanism of the ultrasonic transducer works in a focused ultrasonic disturbance mode, and the focusing ultrasonic waves disturb the nth focusing domain; during focusing ultrasonic disturbance, the boundary measurement voltage vector phi n obtained after disturbance is measured, a low-intensity tracking pulse is emitted to the ultrasonic transducer again, and an echo signal is received; an acoustoelectric signal and corresponding displacement information of the nth focusing domain are obtained; the obtained data is processed, and a biological tissue image is reconstructed.