Spreading Apparatus Door Position Detection and Control
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Solution Overview
Problem
The existing control systems for spreading apparatuses on mobile platforms, such as plant protection machines, suffer from low accuracy in door movement due to mechanical or manufacturing inaccuracies, leading to potential damage and reduced lifespan, as well as suboptimal discharge concentration of particle chemicals.
Innovation Solution
A door detection method and system that uses processors to control the door's movement towards a preset position, obtaining and comparing first and second status information of associated components to determine accurate positioning, allowing for calibration and improved discharge control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If open-loop control is adopted for the door mechanism, then the control system is simple, but the door positioning accuracy is low
Solution Approach 1:
The patent implements a feedback mechanism by detecting the actual position of the door through associated components (such as sensors or position detectors) and comparing it with the preset position. The control system adjusts the door movement based on the position deviation, transforming the open-loop control into a closed-loop control system. This resolves the contradiction by maintaining relative system simplicity while significantly improving positioning accuracy through feedback-based correction.
2Device complexity
If mechanical mechanism with low accuracy is used, then the device structure is simple, but the door cannot reach the preset position accurately
Solution Approach 1:
The patent introduces an intermediary detection component (such as a sensor, switch, or position detector) between the mechanical door mechanism and the control system. This intermediary component accurately measures the actual door position and provides this information to the control system, enabling precise positioning without requiring the mechanical mechanism itself to be highly accurate. The intermediary bridges the gap between simple mechanical structure and precise position measurement.
3Manufacturing precision
If the door does not reach the preset position, then the mechanical tolerance is acceptable, but the discharge concentration control is affected
Solution Approach 1:
The patent uses feedback from door position detection to adjust and control the discharge concentration. By knowing the actual door position through the associated component and comparing it with the preset position, the control system can compensate for positioning deviations and maintain accurate discharge concentration control. This feedback mechanism ensures that even with mechanical tolerances, the final discharge concentration remains within acceptable ranges.
Data Source
AI summary
A door detection method includes controlling a door of a spreading apparatus to move toward to a preset position, obtaining first status information of an associated component of the door when the door stops moving, and determining whether the door has moved to the preset position according to the first status information and second status information. The second status information is status information of the associated component when the door is located at the preset position.