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Crane Lowering Guidance Using a Attachable Camera Module for Driver Vision Support

HyoJae Kang, SunWoo Ahn, InGyu Choi, GeonYeong Go, KunWoo Son, Min-Sung Kang

TL;DR

This paper tackles safety during the crane lowering phase when the load obstructs the operator's view. It introduces an attachable camera module with a suction-cup mount, a downward-facing camera, a laser pointer, and SBC-based real-time processing that streams guidance to a host PC. The guidance relies on edge-based line detection and laser markers to compute a real-time placement line for the ground contact point, with support for up to three modules providing multi-directional coverage. Indoor experiments corroborate feasibility and real-time performance, highlighting potential improvements in construction-site safety, while noting the need for on-site validation and robust attachment methods.

Abstract

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.

Crane Lowering Guidance Using a Attachable Camera Module for Driver Vision Support

TL;DR

This paper tackles safety during the crane lowering phase when the load obstructs the operator's view. It introduces an attachable camera module with a suction-cup mount, a downward-facing camera, a laser pointer, and SBC-based real-time processing that streams guidance to a host PC. The guidance relies on edge-based line detection and laser markers to compute a real-time placement line for the ground contact point, with support for up to three modules providing multi-directional coverage. Indoor experiments corroborate feasibility and real-time performance, highlighting potential improvements in construction-site safety, while noting the need for on-site validation and robust attachment methods.

Abstract

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.
Paper Structure (5 sections, 10 figures)

This paper contains 5 sections, 10 figures.

Table of Contents

  1. Introduction
  2. Module Design
  3. Guidance System
  4. Experimental Validation
  5. Conclusion

Figures (10)

  • Figure 1: Detailed Design of the Camera Module
  • Figure 2: Position of the camera and laser pointer when the module is attached to the object and design dimensions of the module
  • Figure 3: Communication Flow and Power Line of the Camera Modules
  • Figure 4: Guidance concept for the landing position of the lifted object
  • Figure 5: Concept of guidance for placement of lifted objects
  • ...and 5 more figures