Forklift Load Fork Positioning via Acoustic Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Industrial trucks face challenges in accurately positioning load forks relative to receiving openings, especially at high heights, due to limited visibility of lateral and vertical positions, requiring driver experience and independent fine positioning without assistance, and existing camera systems are cumbersome and require driver evaluation.
Innovation Solution
An industrial truck equipped with a position detection device and control system that uses acoustic warnings based on lateral and vertical offsets of the load fork relative to the receiving opening, providing guidance to prevent collisions through distinct acoustic frequencies for different alignment issues, allowing for efficient fine positioning without visual distraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a fork camera system is used to enable visualization of the load fork position, then the driver can see the fork and its position relative to the receiving opening, but the driver still has to independently evaluate the camera image and perform fine positioning, which requires knowledge and experience
Solution Approach 1:
The system provides real-time feedback through acoustic signals about the alignment status of the load fork relative to the receiving opening. The position detection device continuously monitors the alignment and the control device translates this information into intuitive acoustic warnings that guide the driver's positioning actions, creating a closed-loop feedback system that assists fine positioning without requiring extensive driver experience
Solution Approach 2:
The control device acts as an intermediary between the position detection device and the driver. Instead of requiring the driver to directly interpret camera images, the control device processes the positional data and communicates alignment status through acoustic signals, serving as a mediator that translates complex visual information into simple, actionable warnings
2Measurement precision
If the driver performs independent fine positioning of the load fork, then positioning can be completed, but the driver requires knowledge and experience to accurately center the forks in relation to the receiving opening
Solution Approach 1:
The system provides real-time feedback through acoustic signals about the alignment status of the load fork relative to the receiving opening. The position detection device continuously monitors the alignment and the control device translates this information into intuitive acoustic warnings that guide the driver's positioning actions, creating a closed-loop feedback system that assists fine positioning without requiring extensive driver experience
Solution Approach 2:
The system replaces the reliance on driver skill and experience (human cognitive system) with an automated detection and warning system (technical system). The position detection device and control device together form a technical system that objectively measures and communicates alignment status, substituting the need for driver expertise with automated assistance
3Loss of information
If visual camera systems are used for positioning assistance, then the driver can see the fork position, but visual warnings may be overlooked especially in environments where the driver's attention is focused on the direction of travel
Solution Approach 1:
The system transitions from visual information delivery (camera systems) to acoustic information delivery (warning signals). By changing the dimension of information transmission from visual to auditory, the system ensures that position information is delivered through a different sensory channel that is less likely to be overlooked when the driver's visual attention is focused on the direction of travel
Solution Approach 2:
The control device acts as an intermediary between the position detection device and the driver. Instead of requiring the driver to directly interpret camera images, the control device processes the positional data and communicates alignment status through acoustic signals, serving as a mediator that translates complex visual information into simple, actionable warnings
Data Source
Figure 1
Figure 2a~2c
AI summary
The invention relates to a forklift truck (1) with a load handling device (2) comprising a lifting frame (2a) with a fork carriage (2b) movable on the lifting frame (2a), wherein a load fork (2c) is arranged on the fork carriage (2b), a vehicle body (3) and a driver's workstation (5) for a driver (6), comprising: - a position detection device (7) configured to detect an orientation of the load fork (2c) in the form of a lateral offset and/or a vertical offset of the load fork (2c) with respect to a receiving opening (8; 8a, 8b) of a load handling device (9); - a control device (10) configured to, based on the determined orientation of the load fork (2c) with respect to the receiving opening (8;8a, 8b) of the load carrier (9) to generate a warning information which provides information as to whether the load fork (2c) would collide with the load carrier (9) if the industrial truck (1) continues to travel in the direction of the load carrier (9) and if the load fork (2c) remains in the same orientation.;