Cranes have long been essential equipment for lifting and placing heavy loads in construction projects. This study focuses on the lowering phase of crane operation, the stage in which the load is moved to the desired location. During this phase, a constant challenge exists: the load obstructs the operator's view of the landing point. As a result, operators traditionally have to rely on verbal or gestural instructions from ground personnel, which significantly impacts site safety. To alleviate this constraint, the proposed system incorporates a attachable camera module designed to be attached directly to the load via a suction cup. This module houses a single-board computer, battery, and compact camera. After installation, it streams and processes images of the ground directly below the load in real time to generate installation guidance. Simultaneously, this guidance is transmitted to and monitored by a host computer. Preliminary experiments were conducted by attaching this module to a test object, confirming the feasibility of real-time image acquisition and transmission. This approach has the potential to significantly improve safety on construction sites by providing crane operators with an instant visual reference of hidden landing zones.

翻译：起重机长期以来一直是建筑工程中吊装和放置重型负载的关键设备。本研究聚焦于起重机作业的下降阶段，即负载移动至目标位置的过程。在此阶段，始终存在一个挑战：负载会遮挡操作员观察着陆点的视线。因此，操作员传统上必须依赖地面人员的口头或手势指令，这对工地安全造成显著影响。为缓解这一限制，本系统采用了一种可通过吸盘直接附着于负载的可安装摄像头模块。该模块内置单板计算机、电池和紧凑型摄像头。安装后，模块实时流式传输并处理负载正下方地面的图像，以生成安装引导信息。同时，该引导信息被传输至主机计算机并进行监控。通过将该模块附着于测试物体进行的初步实验，证实了实时图像采集与传输的可行性。该方法通过为起重机操作员提供隐藏着陆区域的即时视觉参考，有望显著提升建筑工地的安全性。