Intelligent Perception and Control Center, Huzhou Institute of Zhejiang University, Huzhou 313098, China.
Institute of Cyber-Systems and Control, Zhejiang University, Hangzhou 310027, China.
Sensors (Basel). 2022 Nov 2;22(21):8437. doi: 10.3390/s22218437.
In this research, we present an intelligent forklift cargo precision transfer system to address the issue of poor pallet docking accuracy and low recognition rate when using current techniques. The technology is primarily used to automatically check if there is any pallet that need to be transported. The intelligent forklift is then sent to the area of the target pallet after being recognized. Images of the pallets are then collected using the forklift's camera, and a deep learning-based recognition algorithm is used to calculate the precise position of the pallets. Finally, the forklift is controlled by a high-precision control algorithm to insert the pallet in the exact location. This system creatively introduces the small target detection into the pallet target recognition system, which greatly improves the recognition rate of the system. The application of Yolov5 into the pallet positional calculation makes the coverage and recognition accuracy of the algorithm improved. In comparison with the prior approach, this system's identification rate and accuracy are substantially higher, and it requires fewer sensors and indications to help with deployment. We have collected a significant amount of real data in order to confirm the system's viability and stability. Among them, the accuracy of pallet docking is evaluated 1000 times, and the inaccuracy is kept to a maximum of 6 mm. The recognition rate of pallet recognition is above 99.5% in 7 days of continuous trials.
在这项研究中,我们提出了一种智能叉车货物精确定位传输系统,以解决当前技术中托盘对接精度差和识别率低的问题。该技术主要用于自动检查是否有需要运输的托盘。智能叉车在识别后被送到目标托盘的区域。然后使用叉车的相机收集托盘的图像,并使用基于深度学习的识别算法计算托盘的精确位置。最后,通过高精度控制算法控制叉车将托盘准确插入指定位置。该系统创造性地将小目标检测引入托盘目标识别系统,大大提高了系统的识别率。将 Yolov5 应用于托盘位置计算中,提高了算法的覆盖范围和识别精度。与现有方法相比,该系统的识别率和准确率都有了显著提高,并且需要更少的传感器和指示来帮助部署。我们已经收集了大量的真实数据,以验证系统的可行性和稳定性。其中,托盘对接精度评估了 1000 次,最大误差保持在 6 毫米以内。在连续 7 天的试验中,托盘识别的识别率超过 99.5%。