Tractor Baler Automatic Door Control with Obstacle Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing tractor/baler combinations require operator intervention for bale ejection, which can be fatiguing and risky, especially when dealing with uneven terrain, and may result in accidents if obstacles are not detected.
Innovation Solution
A tractor/baler combination with automatic bale size detection, obstacle sensing, and automated door operation, where the rear door opens only when no obstacles are detected in the vicinity, allowing for fully automated bale ejection without operator input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the door is opened automatically upon bale ejection signal, then the operator has less fatigue and work is easier, but the risk of accidents increases due to undetected obstacles
Solution Approach 1:
The obstacle detection is performed before the door opening action. The control unit checks for obstacles in the door's movement path prior to activating the door actuator, preventing accidents by stopping the automatic door opening when obstacles are detected
Solution Approach 2:
The system continuously monitors the door area using obstacle detection devices and provides feedback to the control unit. This feedback loop allows the system to adjust door opening operations based on real-time obstacle detection, balancing automation with safety
2Object-affected harmful factors
If the operator manually controls door opening and bale ejection, then safety can be monitored, but operator fatigue increases and continuous intervention is required
Solution Approach 1:
The baler system performs self-service by automatically detecting bale size, controlling the door actuator, and managing the wrapping material dispenser without operator intervention. The system monitors its own operation and makes autonomous decisions for door opening and bale ejection
Solution Approach 2:
Manual mechanical control by the operator is replaced with an automated control system comprising electronic controllers, sensors, and actuators. The control unit processes sensor signals and automatically actuates the door and other components, substituting human mechanical operations with automated electromechanical systems
3Productivity
If automatic baling operation is implemented without obstacle detection, then productivity increases and operator intervention is minimized, but safety risks arise from undetected obstacles
Solution Approach 1:
The obstacle detection function is activated before the automatic door opening sequence. The control unit checks the detection zone for obstacles prior to initiating door movement, ensuring safety is verified in advance of automated operations
Solution Approach 2:
The obstacle detection device acts as an intermediary between the automatic control system and the physical environment. It provides critical safety information to the control unit, which then mediates between automated productivity goals and safety constraints by conditionally enabling door opening
Data Source
AI summary
A tractor comprises an electronic tractor controller. A baler comprises a crop receiver, a baling chamber, a rear door, a rear door actuator, a bale size sensor associated with the baling chamber, and an electronic baler controller. The baler controller is operable to submit a halt signal to the tractor controller when a bale size signal provided by the bale size sensor indicates that a bale has reached a size corresponding to a predetermined size. The tractor controller then halts the tractor and the bale is wrapped. The rear door is opened automatically after the bale has been wrapped, but only if an obstacle sensor detects no obstacle in a detection zone behind the baler.