675results about How to "Intuitive test results" patented technology

The invention discloses a water-secluding pipe mechanical behavior testing system based on a coupling effect of a marine environment and drilling conditions. A water pump (21), a light source (1), a camera A (3) parallel to the water flow direction, a contrast board A (5) parallel to the water flow direction, a camera B (4) perpendicular to the water flow direction and a contrast board B (6) perpendicular to the water flow direction are installed on the outer wall surface of a pool (2), a motor supporting frame (9) is arranged on a tension supporting board (17), and an upper connecting structure, a water-secluding pipe (8) and a lower connecting structure which are connected in sequence are arranged between the motor supporting frame (9) and the bottom of the pool (2) from top to bottom. The invention further discloses a testing method. The water-secluding pipe mechanical behavior testing system and method have the advantages that mechanical behaviors of the water-secluding pipe can be comprehensively, accurately and really simulated under the coupling effect of the deep sea drilling conditions and the marine environment, and the system can simulate the marine environment, apply tension to the top of the water-secluding pipe, simulate rotation of drill strings different in rotating speed and apply different magnitudes of bit pressure.

The invention discloses a machine vision detection method based on four-colour printed matter registration detection marks, comprising the following steps of: presetting graphs of the four-colour printed matter registration detection marks, and taking the circle centre of a black solid circular mark graph as a reference of the registration detection marks, wherein the circle centre of a yellow annular mark graph, the circle centre of a pinkish red annular mark graph, and the circle centre of a cyan annular mark graph are respectively as same as the circle centre of the black solid circular mark graph; acquiring images of preset graphs of the registration detection marks during a printing process; respectively obtaining coordinates of the circle centres of the registration detection marks in the images by a computer system; calculating registration deviation via the coordinates of the circle centres; comparing the squared value of the registration deviation with a deviation tolerance level; and finally, outputting a registration deviation result. The registration detection marks are simple in structure and small in occupied space, and camera can be convenient to rapidly and accurately shoot. According to the corresponding detection method, only deviation analysis does need to be performed via circle centre parameters, thus being high in detection efficiency, intuitive in result, and capable of realizing online detection for high-speed printed matters.