Forklift Control System for Flexible Mode Switching
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Solution Overview
Problem
Existing forklift control systems lack flexibility in operation modes, with manual forklifts requiring specific training and fully autonomous forklifts being expensive and limited in application, while existing solutions for vehicles do not account for the unique requirements of forklifts in industrial environments.
Innovation Solution
A control system for forklifts that integrates human control devices, an environment detection module, a navigation module, and a switching module to enable multiple operation modes from fully autonomous to fully manual, including assisted modes, allowing for real-time geolocation, telecommunications, and emergency stop functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a forklift operates in fully autonomous mode, then the need for operator training is eliminated, but the cost increases significantly and application flexibility is reduced
Solution Approach 1:
The system dynamically switches between multiple operating modes (manual, autonomous, and hybrid) based on task requirements and environmental conditions, allowing the forklift to adapt its level of automation rather than being locked into a single mode. This resolves the contradiction by making the automation level flexible rather than fixed.
Solution Approach 2:
The control system integrates multiple functions within a single unified architecture that supports both manual and autonomous operations, as well as hybrid modes combining both approaches. This multi-functional design eliminates the need for separate systems for different operation types, reducing cost while maintaining application flexibility.
2Reliability
If a forklift operates in fully autonomous mode, then operator safety is improved, but the system cost increases significantly
Solution Approach 1:
Instead of implementing complete autonomous operation with all associated high costs, the system applies autonomous functions partially or selectively for specific tasks or conditions where they provide the most safety benefit. Hybrid modes allow autonomous safety features to be activated only when needed, reducing overall system cost while maintaining safety improvements.
3Device complexity
If a forklift operates in manual mode, then system cost is reduced, but operator training requirements increase and safety risks remain
Solution Approach 1:
The system continuously monitors environmental conditions, forklift status, and operational parameters, providing real-time feedback to both the control system and the operator. This feedback mechanism enables the system to suggest or automatically activate safety measures during manual operation, improving safety without requiring full autonomous mode or significant cost increases.
4Ease of manufacture
If existing forklifts are modified to add autonomous capabilities, then investment protection is improved, but substantial modifications are required
Solution Approach 1:
The autonomous control system is designed as a modular, segmented architecture that can be added as separate functional blocks to existing forklifts. This segmentation allows for incremental integration without requiring substantial modifications to the core forklift system, protecting existing investments while enabling autonomous capabilities.
Data Source
Figure 1~2
AI summary
The invention relates to a system for controlling a lift truck that has several modes of operation, and in particular allows operation in a manual or an autonomous mode. The invention also relates to a forklift truck equipped with such a control system.