Forestry Machine Cabin Hazard Detection for Moving Trunk Intrusion
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Solution Overview
Problem
Forestry machine operators face safety risks due to potential collisions with moving tree trunks or other objects that may intrude into the cabin, as existing systems rely on operator observation and do not provide automatic detection and response.
Innovation Solution
A control method and system using sensors and control units to detect objects within a predetermined area around the cabin, determining the object's location, speed, and direction of travel, and automatically adjusting the forestry machine's operation to prevent collisions by slowing down or stopping the machinery if necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automatic sensor-based detection system is implemented, then operator safety is improved, but device complexity increases
Solution Approach 1:
The detection area is segmented into multiple predetermined sectors radiating from the cabin, allowing the sensor system to focus on specific zones rather than monitoring the entire environment uniformly. This segmentation enables more efficient object detection and tracking while reducing overall system complexity.
Solution Approach 2:
A control unit acts as an intermediary between the sensor and the forestry machine's control system. The control unit processes sensor data, determines object trajectories, and automatically adjusts machine operation, thereby simplifying the integration of safety features without requiring direct complex connections between all system components.
2Device complexity
If operator observation is used for hazard detection, then device complexity is reduced, but response time and safety are worsened
Solution Approach 1:
The manual observation system is replaced with an automated sensor-based detection system that continuously monitors the environment around the cabin. This substitution eliminates human reaction time limitations and provides immediate automated response to potential hazards.
Solution Approach 2:
The system performs self-monitoring and self-adjustment by automatically detecting objects, calculating their trajectories, and controlling the forestry machine's operation without requiring operator intervention. The control system serves itself by making real-time safety decisions.
Data Source
AI summary
A control arrangement includes at least one sensor. The sensor is adapted to detect at least one object in an area of at least one predefined sector focused in an area between a control cabin and a boom end, and to detect at least one of: location information of the detected object at two different time instants, at least, and the speed of the detected object. The control arrangement additionally includes at least one control unit adapted to determine at least the direction of travel of the detected object in relation to the control cabin at two different time instants, at least, based on the detected location information and/or the detected speed of the object, and cause a change in the control of a forest machine responsive to the detected direction of movement of the detected object being directed towards the control cabin in the area of the sector.