35results about How to "Meet high-precision measurement requirements" patented technology

The invention provides a straight waveguide, feedback waveguide and circle-straight waveguide high-sensitivity resonance system, belongs to the field of optics, and solves the problem that the conventional optical fiber resonant cavity is poor in measuring accuracy. Compared with the conventional single-ring resonant cavity structure, the system provided by the invention has the advantages that a second coupler C2 and a fourth coupler C4 are additionally introduced; through setting of coupling coefficients of a first coupler C1, the second coupler C2, a third coupler C3 and the fourth coupler C4, a certain ratio of the length of optical fibers in a ring-shaped resonant cavity to that of optical fibers in feedback waveguide is ensured, so that a Fano linear spectral line can be output, and the high-sensitivity spectral line can improve the measuring accuracy of the optical fiber resonant cavity. The system is mainly applied to high-precision measurement.

The invention relates to a car body position detection device for car washing, which comprises a measuring device 1, a detector 3, an image processor and an electrical control module 4, and is characterized in that the measuring device 1, the detector 3 and the image processor are connected with the electrical control module 4 through lines, the measuring device 1, the detector 3 and cameras 2 in the image processor are fixed on a frame body 5, the frame body can be placed on a car washing frame 8 in a back-and-forth moving manner through a driving mechanism, and the driving mechanism 8 is connected with the electrical control module 4; the measuring device 1 comprises a transmitter 11 and a receiver 12, the image processor comprises the cameras 2 and an image recognition and operation module, the cameras 2 are fixed at the upper parts of the frame body 5 and located at two sides above an automobile 7. The advantages lie in that position values of protruding parts such as reflectors and a luggage rack on the car body contour can be measured, and measurement is performed quickly in a non-contact and automated manner; and meanwhile, the tire azimuth and the wheelbase are measured, special cleaning can be performed on tires accordingly, the head, the tail and inlet and outlet conditions of the automobile are judged, and model judgment is assisted.

The invention relates to the technical field of distance measurement, in particular to a point-line mileage measurement device, comprising: a driving wheel rolling on the surface to be measured, a decimal scale gear transmission group, an integer scale gear transmission group, a gear transmission group arranged on the decimal scale The decimal dial at the end of the group and the integer dial arranged at the end of the integer scale gear transmission shaft; the beginning end of the decimal scale gear transmission group and the beginning end of the integer scale gear transmission group are both coaxially arranged with the driving wheel, and the decimal dial has a There are n scale lines arranged in an array around its circumference, the radius of the driving wheel is r, the transmission ratio of the decimal scale gear transmission group is a, the transmission ratio of the integer scale gear group is b, and the integer scale has an array around its circumference. The t scale lines of the cloth can be calculated according to the pointer index on the integer dial and the pointer index on the decimal dial to calculate the length of the driving wheel. The invention is easy to operate, and one person can measure the length of longer builds.