A batch visual measurement system and method for multi-type workpieces

A visual measurement and multi-type technology, applied in the direction of measuring devices, instruments, optical devices, etc., can solve the problems of batch detection, workpiece cannot be automatically identified, single, etc.

Active Publication Date: 2019-10-18
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the fact that the existing forming visual inspection equipment is not universal, and cannot automatically identify and batch detect workpieces of different sizes, shapes and complexity, the present invention proposes a batch visual measurement system and method for multi-type workpieces, which is a A high-degree-of-freedom measurement system capable of simultaneously measuring multiple types of workpieces, the system is capable of batch measurement of single and multiple types of workpieces

Method used

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  • A batch visual measurement system and method for multi-type workpieces
  • A batch visual measurement system and method for multi-type workpieces
  • A batch visual measurement system and method for multi-type workpieces

Examples

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Embodiment 1

[0086] Such as Figure 4 with 5 As shown, a multi-type workpiece batch visual measurement system includes a data processing terminal, a workpiece detection unit, an image acquisition unit, and a control unit;

[0087] The data processing terminal is used to store and process data information;

[0088] The workpiece detection unit is used to place the workpiece to be tested and start the detection system;

[0089] The image acquisition unit is used to acquire a local depth image;

[0090] The control unit includes a motion platform control unit and a gripper control unit;

[0091] The motion platform control unit includes a motion control card and a motor driver. The motion control card is built into the PCI card slot of the industrial computer motherboard to send different frequencies and different numbers of pulses to the driver. The motor driver communicates with the motion control card through signal lines for receiving Pulse to control the speed, direction and position of the motor...

Embodiment 2

[0153] The scheme of Embodiment 2 is basically the same as that of Embodiment 1, except that the image stitching adopts the following steps: the image acquisition unit is a scanner, and several scanners scan line by line, and each line of data collected by each scanner is separately Continuously stored in the memory address block, the memory address corresponds to the data source one to one, knows the first address of each line of data collected by each scanner, and obtains the data storage offset according to the width of the coincident field of view, and specifies each line of data Start to read the image data continuously at the first address, find the data storage location of the repeated pixel and not read it, so that the image stitching is performed in the image data reading link to obtain the global scanned image.

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Abstract

The invention provides a multi-type workpieces batch visual measuring system and a method, and belongs to the field of industrial detection automation. The measuring system comprises a data processingterminal, a workpieces detecting unit, an image acquiring unit, a control unit and the like. The measuring method comprises the following steps of: judging whether the to-be-detected workpieces are put into a detecting platform or not; obtaining a local depth image; obtaining a global image; identifying the type and number of the workpieces; and completing the size parameter measurement requiredby the measurement task. According to the multi-type workpieces batch visual measuring system and method, multiple kinds and multiple workpieces can be simultaneously detected at the same time; compared with traditional measurement means, the type and quantity of the workpieces, speed and accuracy and the like in measuring are significantly improved.

Description

Technical field [0001] The invention relates to technologies such as image processing, machine vision, motor control and sensors, and belongs to the field of machine vision detection and measurement. More specifically, it is a visual measurement system based on pattern recognition with image processing as the core, specifically a multi-type workpiece visual measurement system and method. Background technique [0002] With the advent of the era of flexible production, manufacturing has gradually shifted to customization and a variety of directions, which not only further increases the diversity of product shapes, but also puts forward higher requirements for the rapidity and versatility of the measurement system. At present, there are two main methods used in industrial measurement: contact and non-contact. Among the contact detection system equipment, the most widely used is the coordinate measuring machine, but the equipment has relatively high requirements on the environment a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/24
Inventor 何毅刘欢梅雪黄小龙严鹏戈康启
Owner NANJING TECH UNIV
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