Experiment and analysis of dynamic change process of picking coordinates of high‑quality tea

doi:10.13733/j.jcam.issn.2095‑5553.2025.02.029

Abstract

Abstract: Tea is an important characteristic economic crop in China. In order to explore the dynamic changes in the target tea shoots coordinates during the precise picking process of high‑quality tea, a tea shoots swinging experimental platform was designed. The platform mainly includes a support frame, synchronous belt module, high‑speed camera system, PLC control system, axial flow fan system, and intelligent pressure wind speed and air volume meter. This article takes wind speed, temperature, and the impact speed of the actuator during picking as partial picking conditions to explore the dynamic change process of tea shoots coordinates under the combined action of three factors. The research results indicate that the threshold values for various factors within the optimal harvesting range are as follows: temperature 31.25 ℃, impact speed 248.22 mm/s, and wind speed 3.42 m/s. In the actual picking process, the change in wind speed has a particularly significant impact on the coordinates of tea shoots. Secondly, when the actuator touches the tea tip blades, it will also cause significant changes in the tea tip coordinates, and the influence of environmental temperature on the tea tip coordinates is minimal. Therefore, there are many factors that affect the changes in tea shoots coordinates, and there are significant differences between individual tea shoots. The impact of natural wind force and picking speed on tea shoot coordinates is extremely significant. In the precise picking process of high‑quality tea leaves, it is necessary to strive to overcome the interference of the above two factors.

Key words: high?quality tea, picking conditions, dynamic change of coordinates, factor analysis, precise picking

摘要： 茶叶是我国重要的特色经济作物，为探究名优茶叶在精准采摘过程中目标茶芽坐标动态变化的问题，设计一款茶梢摆动试验平台。该平台主要包括支撑架、同步带模组、高速摄像机系统、PLC控制系统、轴流式风机系统和智能压力风速风量仪。以风速、温度和采摘时执行器的冲击速度为部分采摘条件，探究在3个因素共同作用下茶梢坐标的动态变化过程。结果表明：最佳可采摘范围内各因素的阈值为温度31.25 ℃、冲击速度248.22 mm/s、风速3.42 m/s。在实际采摘过程中，风速的变化对茶梢坐标的影响尤为显著。其次，执行器触碰到茶梢叶片时，也会带来茶梢坐标明显的变化，而环境温度对茶梢坐标的影响最小。因此，影响茶梢坐标变化的因素有很多，且茶稍个体间具有明显的差异，自然风力和采摘时的冲击速度对于茶梢坐标的影响极为显著，在名优茶叶精准采摘过程中，要极力克服以上两个因素的干扰。

关键词: 名优茶叶, 采摘条件, 坐标动态变化, 因素分析, 精准采摘

CLC Number:

S237

Zheng Yingsong, Wu Weibin, , Wang Xiaoming, Hang Chongyang, Tang Ting, Xiao Guannan. Experiment and analysis of dynamic change process of picking coordinates of high‑quality tea[J]. Journal of Chinese Agricultural Mechanization, 2025, 46(2): 193-198.

郑应松, 吴伟斌, 汪小名, 韩重阳, 唐婷, 肖冠南. 名优茶叶采摘坐标动态变化过程试验与分析[J]. 中国农机化学报, 2025, 46(2): 193-198.

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