可自适应调节且无缝切换的摩擦片条形码扫描识别装置

Abstract

本实用新型提供了一种可自适应调节且无缝切换的摩擦片条形码扫描识别装置，包含由云台架、扫码枪、视觉识别单元、红外传感器和控制器组合而成的一种基于视觉识别与多模传感技术机的电一体化结构，红外传感器作为触发单元，能够在摩擦片到达扫描工位前触发低功耗的视觉识别单元和扫码枪启动，视觉识别单元采集摩擦片的图像，以便获取条形码所处位置数据，进而通过云台架调整扫码枪的方位，可见，本方案该摩擦片条形码扫描识别装置基于视觉识别与多模传感技术构成了一闭环自动控制结构，能够实现扫码枪方位的自适应且无缝切换，不仅无需人工手动频繁调整扫码枪的方位，且能够兼容新旧两种摩擦片，解决了现有背景技术中存在的不足。

Claims

1. A friction pad barcode scanning and recognition device with adaptive adjustment and seamless switching, characterized in that, Include: A barcode scanner, which is mounted on a gimbal and located on one side of the friction plate conveying mechanism; A visual recognition unit is located above and in front of the barcode scanner. It is used to capture images of the friction pad in front of the scanning station, so as to obtain the location data of the barcode on the friction pad based on the image, and then adaptively adjust the orientation of the barcode scanner based on the location data through the pan-tilt frame. An infrared sensor, comprising at least one set, is disposed on the side wall of the friction pad conveying mechanism and located at the front end of the optimal focusing distance of the vision recognition unit, for generating a trigger signal before the friction pad reaches the scanning station, thereby synchronously triggering the vision recognition unit and the barcode scanner; The controller is electrically connected to the barcode scanner, pan-tilt unit, vision recognition unit, and infrared sensor, and establishes a real-time communication link with each other.

2. The self-adjustable and seamless switching friction plate strip barcode scanning and recognizing device according to claim 1, characterized in that: The gimbal frame includes a fixed base, a horizontal rotation mechanism, and a pitch mechanism. The horizontal rotation mechanism includes a U-shaped frame and a drive assembly A. The drive assembly A rotatably fixes the U-shaped frame to the upper end of the fixed base. The pitch mechanism includes an arch frame and a drive assembly B. The arch frame is mounted in the opening of the U-shaped frame and can rotate synchronously with the U-shaped frame. The drive assembly B can drive the arch frame to pitch relative to the U-shaped frame.

3. The self-adjustable and seamless switching friction plate strip barcode scanning and recognizing device according to claim 2, characterized in that: The arch frame includes frame A and frame B arranged vertically, with frame B located above frame A. The barcode scanner is mounted on frame A, and the visual recognition unit is mounted on frame B. That is, the visual recognition unit adjusts its position synchronously with the barcode scanner.

4. The self-adjustable and seamless switching friction plate strip barcode scanning and recognizing device according to claim 3, characterized in that: The frame A is provided with a perforated mounting plate, and the barcode scanner is detachably fixed on the mounting plate. The frame B is provided with a U-shaped groove, through which the visual recognition unit is fixed and its height in the vertical direction can be adjusted.

5. The self-adjustable and seamless switching friction plate strip barcode scanning and recognizing device according to claim 2, characterized in that: The drive assembly A includes a stepper motor and a harmonic reducer. The drive assembly A is installed in the mounting cavity at the upper end of the base and connected to the bottom of the U-shaped frame through a bearing seat. The drive assembly B includes a servo motor, which is located on the side of the U-shaped frame and connected to the side wall of the arch frame through a bearing seat. Meanwhile, encoder A and encoder B are respectively provided on the stepper motor and the servo motor.

6. The self-adjustable and seamless switching friction plate strip barcode scanning and recognizing device according to claim 1, characterized in that: The location data of the barcode includes at least two types of location data: the size data of the friction pad and the location data of the barcode being set on the concave surface or the convex contour surface of the friction pad. The combination of the size data and the location data forms an AND logic condition.

7. The self-adjustable and seamless switching friction plate strip barcode scanning and recognizing device according to claim 1, characterized in that: The infrared sensor is a near-infrared sensor of model SICK CLV490-3, which includes a transmitter and a receiver. The transmitter and receiver are respectively fixed on opposite sides of the friction plate conveying mechanism by brackets.

8. The self-adjustable and seamless switching friction plate strip barcode scanning and recognizing device according to claim 1, characterized in that: The visual recognition unit is located 5-10cm above and in front of the barcode scanner.

9. The adaptively adjustable and seamlessly switching friction pad barcode scanning and identification device according to claim 1, characterized in that: The visual recognition unit is a camera, which is tilted at a 15-30° angle to the horizontal plane.

10. The self-adjustable and seamless switching friction plate strip barcode scanning and recognizing device according to claim 1, characterized in that: The controller is the original PLC of the friction plate scanning system.

Images