5 results about "Size measurement" patented technology

The invention provides a part size measurement method based on a charge coupled device (CCD). According to the part size measurement method, feature point recognition technology is adopted, pixels are classified through feature points of a part, the size of the whole part is measured, prior knowledge of the part is not required, and measurement for the common part is achieved. According to the method, high-speed measurement is conducted, and meanwhile a precision requirement is met. The part size measurement method based on the CCD is simple in algorithm, low in cost and good in application prospect due to the facts that only the CCD and a computer are required for hardware implementation and a complex mechanical structure is not required.

The invention relates to a corrosion agent for displaying low-alloy and high-strength-steel welding heat affected zone partitions and a method. The corrosion agent comprises a component A for corrosion in a step 1, and a component B for corrosion in a step 2; the component A is FeCl3 solution with a mass fraction of 5-8%; the component B consists of the following components in percentage by volume: 2-2.5% of nitric acid, 0.5-1.5% of hydrofluoric acid, and the balance of anhydrous ethanol; after the component A of the corrosion agent is firstly used for corrosion and cleaning, the component B of the corrosion agent is used for corrosion, that is, the two-step combined corrosion is performed; and the macroscopic metallography of each partition of a corrosion welding heat affected zone can be displayed. The corrosion agent and the corrosion method can obviously display the partition boundaries of the welding heat affected zone, are convenient for size measurement of the welding heat affected zone, accurately perform geometric size arrangement of welding ways, and realize a tempering welding way technology.

The invention provides a size measurement system. A computer controls a profile camera and a depth camera to acquire images according to received triggering signals, and image acquisition results and a pre-stored image model are matched and adjusted; measurement points are automatically identified in the image acquisition results according to received size requirements, and size measurement results are obtained in a calculated manner. The system can automatically, intelligently and rapidly measure sizes based on image processing and control of measurement processes of the computer and solves the problems of the prior art.

The invention discloses a box selection device capable of measuring the width of goods automatically. The box selection device comprises a support, and a goods transportation part, a size detection part, a packaging box selection part and a control part are arranged on the support; the goods transportation part comprises a motor, two chains capable of moving synchronously and rollers located between the two chains, and baffles are arranged between the two chains; the size detection part comprises a connecting rod mechanism, and the connecting rod mechanism is fixedly connected to a first gear; the packaging box selection part comprises a second gear meshing with the first gear and a ratchet wheel fixed to the same shaft as the second gear, a pawl capable of moving vertically along the support is arranged at the part, located on the outer side of the ratchet wheel, of the support, and a vacuum chuck is arranged on the outer side of the ratchet wheel. The box selection device integrates the functions of size measurement and packaging box selection, the operation is simple, and the work efficiency is high.