In the measurement of 3D profilometer, the clearer the contour extracted by the sensor, the higher the detection accuracy. For many object workpieces, a single exposure However, when the curvature of the surface of the object is large, or the color has bright and dark parts, some areas in a single exposure will be overexposed or underexposed, which will affect the detection effect. Learn about the 3D profiler below.

For example, the light and dark parts of a dial indicator vary depending on the reflection intensity of light, and a clear and smooth contour data cannot be obtained with one exposure. The reflected light intensity of the curved surfaces on both sides is too low. If you want to extract the dark part information on both sides, you need to extend the exposure time, but the original bright part in the middle is exposed more, or there is more noise extending to both sides, which hinders contour extraction. Contour data The accuracy and smoothness are insufficient.

The three-dimensional profile measuring instrument can be used in the industrial field to measure the shape of the welding burr of the battery tab and the ripple after the tab stripe. It is a high-precision thickness measurement device. , easy to measure, the three-dimensional profile measuring instrument has a long life, scans the measured object with a high-precision 2D displacement sensor, and obtains the relevant data of the surface contour of the measured object, and can perform various corrections and analysis on the product to obtain the required height, Physical quantities such as taper, roughness, flatness, etc. It greatly improves the production qualification rate of the product and saves the production cost.

The three-dimensional profile measuring instrument can be used to measure the microscopic three-dimensional topography and surface feature analysis; support one-key measurement and analysis, and automatically generate test reports. The height measured by the system can be adjusted to be suitable for 3D measurement of samples with different thicknesses. In order to solve the problem that the target object has both bright parts and dark parts, and the contour acquisition is inaccurate, the R&D personnel of Guoke Microstep are affected by the high height during the photography process. Inspired by the dynamic range technology, the multiple exposure technology is applied to the laser profile sensor, which greatly improves the dynamic range of the sensor.

The multi-exposure technology of the three-dimensional profile measuring instrument is to combine the profiles obtained by multiple exposures into one frame of profile data. The parameters of each exposure are different. After a special algorithm Processing, to generate bright and smooth contour data, through the use of multiple exposures, the fused needle gauge contour data is clearer and more accurate than before.

The multi-exposure technology of the 3D profilometer has universal applicability and can be widely used in various materials such as metal, plastic, wood, etc., for example, in order to detect defects in PCB boards , in order to detect the height of the bearing, in order to detect the assembly accuracy of the notebook computer, in order to detect the defect of the sealing tape, etc.