Measuring method of virtual clamp

Abstract

The invention relates to the technical field of measurement, in particular to a measuring method of a photoelectric instrument. The method comprises the following steps of: 1) putting one of the working pieces on a working platform, fixing, then using a camera to capture two lines on the working piece randomly, inputting the two lines into a computer, and constructing a reference line on a measuring plane of the computer so as to form a virtual clamp; 2) putting another measured working piece on the working platform, using the reference line on the formed measuring plane to align a corresponding line of the working piece, and forming upper clamping of the virtual clamp by the corresponding movement and / or rotation of the reference line on the measuring plane; and 3) using the position relation of a virtual focus and the reference line of a measuring lens, moving and capturing the points and lines of the working piece and then measurement can be carried out. The invention has convenient operation, fast measuring speed and high accuracy, reduces error measurement, improves measurement efficiency, simultaneously reduces the influence of the clamp on the working platform to the working piece, has no high requirements to the positioning of the working piece on the working platform and reduces mechanical error.

Description

Technical field: [0001] The invention relates to the field of measurement technology, in particular to a measurement method of a photoelectric instrument. Background technique: [0002] With the development of science and technology, higher and higher requirements are put forward for precise positioning measurement, so it is difficult for traditional vernier calipers or screw measuring instruments to meet the measurement requirements. Then photoelectric measurement appeared, using an image grabber (such as CCD) to convert the image of the measured object into an electronic signal, and then the electronic signal is sent to the computer, and the image processing chip of the computer will enlarge the image and display it on the monitor, and then use the computer's three-dimensional coordinate Corresponding to capture measurement, this method can reduce measurement error and improve measurement accuracy. However, the existing photoelectric measuring instruments mainly capture t...

AI Technical Summary

Problems solved by technology

However, the existing photoelectric measuring instruments mainly capture the measurement by the movement of the measuring lens. Due to the lack of movement guidance, it is often impossible to capture or grasp the wrong phenomenon, especially when the points are close to each other or the points are When it is at the edge of the workpiece, it is difficult for the lens to capture accurately, which makes the measurement more troublesome, and it is also difficult to accurately move the lens in place, which greatly affects the measurement efficiency and brings a lot of inconvenience to the measurement