Remote Control Operator Position Detection for Work Machine Safety
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Solution Overview
Problem
Worksite accidents often occur due to the inability of existing systems to effectively control work machines and tools based on the position of operators or observers relative to the machines, leading to unsafe operational conditions.
Innovation Solution
A method and system that utilize sensors, controllers, and processing assemblies to determine the location of operators and observers relative to work machines and tools, adjusting operational characteristics such as speed and movement to maintain safe distances and prevent accidents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing control systems are used for work machines, then operational simplicity is maintained, but operator safety deteriorates due to inability to detect hazardous proximity
Solution Approach 1:
A transceiver system acts as an intermediary between the remote operator and the work machine. The transceiver receives control signals from the operator, determines machine operational state, and automatically adjusts control signal transmission based on detected personnel proximity to the operational boundary, thereby mediating safety without requiring direct operator intervention
Solution Approach 2:
The control system performs self-monitoring and self-adjustment functions. The processor continuously monitors the work machine's operational state and automatically modifies control signal transmission based on detected personnel locations, enabling the system to self-regulate safety parameters without external intervention
2Reliability
If automatic control adjustments are implemented based on personnel detection, then operator safety is improved, but system complexity increases
Solution Approach 1:
The transceiver system performs multiple functions: receiving control signals from the operator, transmitting control signals to the work machine, detecting personnel locations within the operational boundary, and automatically adjusting control signal transmission. This multi-functionality consolidates what would otherwise require separate systems into a single integrated unit
Solution Approach 2:
The system continuously monitors personnel locations relative to the operational boundary and uses this feedback to automatically adjust control signal transmission. When personnel are detected within the boundary, the system modifies or prevents transmission of control signals, creating a closed-loop safety mechanism
3Reliability
If control signals are automatically modified based on personnel location, then hazardous proximity is prevented, but operational responsiveness may deteriorate
Solution Approach 1:
The system pre-establishes the operational boundary and continuously monitors personnel locations relative to this boundary before hazardous conditions occur. By proactively detecting personnel positions and preventing control signal transmission before hazards can develop, the system avoids reactive delays
Data Source
AI summary
A system and method for controlling a work machine system having a work machine and work tool. Operational characteristics of both the work machine and work tool are configured by a machine controller based upon the type of work tool attached to the work machine, the operating environment of the work machine, and the location of work site personnel or other observers relative to the machine or work tool. The operational characteristics of both the work machine and work tool may then be automatically altered during operation of the work machine system to limit or expand functions of the work machine system in response to changes in the operational environment or movement of personnel or observers relative to the work machine system.