Aerial Device Control Center with Lever-Based Telescopic Control
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Solution Overview
Problem
Current control systems for aerial devices, such as telescopic turnable ladders on firefighting vehicles, are complex and non-intuitive, requiring high operation skills and being difficult to manage under stress, especially with the use of two joysticks for controlling multiple degrees of freedom.
Innovation Solution
A control center with a single control lever for the telescopic movement of the main boom part, and additional levers or switches for controlling other movements, allowing for intuitive and ergonomic operation, including a second control lever for the second inclination movement and an optional third lever for the second telescopic movement of the extension boom part, with mode-switching capabilities to simplify control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two joysticks are used to control multiple degrees of freedom, then all movements can be controlled, but the control becomes too complex and demands high operation skills
Solution Approach 1:
The control system is segmented into two separate control devices: a first control device (joystick) for controlling rotational and inclination movements, and a second control device (control lever) specifically for controlling telescopic movements. This segmentation allows each device to handle specific functions, reducing overall control complexity while maintaining full adaptability.
Solution Approach 2:
The control lever is designed with multi-functionality, serving as the primary control for telescopic movements while potentially being switched to control other degrees of freedom when needed. This universal design reduces the need for multiple specialized controls, simplifying the overall system.
2Adaptability or versatility
If two joysticks are used for controlling telescopic and inclination movements, then all movements are controllable, but the operation becomes non-intuitive and ergonomic
Solution Approach 1:
Different control devices are assigned to different types of movements based on their operational characteristics. The control lever with its linear movement characteristic is assigned to control telescopic movements, creating a local match between control device properties and movement properties, thereby improving intuitiveness and ergonomics.
Data Source
AI summary
Control center for an aerial device, said aerial device comprising a main boom part mounted on a turret, the main boom part being inclinable around a horizontal axis in a first inclination movement, rotatable around a vertical axis in a rotation movement, and extendable and retractable in a first telescopic movement, wherein the control center comprises a first control device configured for controlling the first inclination movement and the rotation movement of the main boom part, and a second control device comprising at least a first control lever for controlling the first telescopic movement.