OCR Visual Inspection System Real-Time Character Checking Machine

Advantages of system

The functional characteristics of the OCR machine vision character detection system are to perform image recognition and detection on the appearance, defect, presence, position, etc. of the characters printed on the tested object, and output the detection results.

Inspection principle

This system is used for the reading and sending functions of the displayed weight figures during the calibration process of the electronic scale before leaving the factory. The system adopts imported industrial cameras, which can quickly obtain the product image, and give the weight displayed by the electronic scale through image recognition, analysis and calculation. The value can also be judged according to the error range and output OK/NG signal, so that the equipment can perform the next operation.

Features of system

The character recognition system developed by our company based on machine vision image processing technology has the characteristics of high precision, high speed and multiple samples. The main modules of the system are: trigger positioning, image processing module and control module. According to the user's needs, the sample moves to the detection position, triggers the camera and outputs the recognition signal to the vision system in time, thus completing the recognition function.

Character recognition positioning trigger control design scheme: After the product is in place, the photoelectric sensor collects the recognition signal, and the system recognizes the character information; the recognized information is sent to the PLC in a fixed format for the next step.

• The operation interface is clear and clear, simple and easy to operate, and the recognition can be automatically performed with simple settings;
• The identification software and algorithm are completely independently developed, and the system is highly targeted;
• The recognition template and recognition range can be set flexibly;
• The local recognition function can be selected to improve the recognition speed;
• Professional light source design, clear and uniform imaging, to ensure the completion of the recognition task;
• Support the identification of various types of products, and have functions such as automatic online product search;
• Simple installation; compact result, easy to operate, maintain and expand;
• High reliability and stable operation, suitable for various on-site operating conditions.
• Based on the PC platform, the system has strong scalability and can expand other functions.

Inspection principle

The visual recognition system mainly includes: camera, lens, light source and image processing software. After the light source illuminates the sample that reaches the recognition position, the imaging system composed of the camera and the lens captures it. When the camera receives the trigger signal, the imaging system takes a picture of the sample and transmits the image to the image processing system for recognition. The recognized values are transmitted to the PLC for the equipment to perform the next step.