Collision Threat Filtering for Earth-Moving Machinery
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Solution Overview
Problem
Existing collision awareness and avoidance systems (CAAS) in earth-moving machinery often generate false alarms and unnecessary interventions due to close proximity operations between machines, leading to inefficient operation and operator distraction.
Innovation Solution
A collision threat filtering method that determines trajectory information for multiple machines, identifies potential collisions, and selectively filters these collisions based on filtering parameters and machine information to prevent unnecessary collision prevention actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If collision awareness and avoidance systems operate based on sensor information and trajectory data, then collision detection capability is improved, but false alarms increase due to close proximity operations between machines
Solution Approach 1:
The patent introduces a filter as an intermediary component between the collision detection system and the collision prevention action. This filter receives collision threats from the detection system and applies filtering criteria (such as machine type, operation mode,, and spatial relationship) to determine whether to block the threat. This intermediary layer resolves the contradiction by allowing accurate detection to proceed while preventing false alarms from triggering unnecessary interventions.
Solution Approach 2:
The system dynamically changes parameters related to collision threat evaluation based on machine information and operational context. By adjusting filtering parameters such as acceptable proximity thresholds, machine type classifications, and operation mode settings, the system maintains high detection accuracy while adapting to different operational scenarios to reduce false alarms.
2Reliability
If the CAAS intervenes to avoid potential collisions, then safety is improved, but operational efficiency deteriorates due to unnecessary machine stoppages or redirections
Solution Approach 1:
The filter acts as an intermediary that evaluates collision threats before they reach the collision prevention system. By applying filtering criteria that consider machine types (e.g., excluding wheel loaders and haul trucks operating in coordinated loading operations), spatial relationships, and operational contexts, the filter blocks false alarm threats while allowing genuine collision risks to proceed to the prevention system. This ensures safety interventions are triggered only when truly necessary, maintaining operational efficiency.
Solution Approach 2:
The system performs preliminary filtering of collision threats before they reach the collision prevention action stage. By pre-evaluating threats using filtering criteria and machine information, the system eliminates false alarms in advance, preventing unnecessary operational interruptions before they occur.
3Measurement precision
If the system monitors multiple machines in close proximity, then collision awareness is improved, but operator distraction increases due to frequent warnings
Solution Approach 1:
The filter serves as an intermediary between the spatial awareness system and the operator interface. It maintains accurate monitoring of multiple machines while filtering out false alarm threats before they are presented to the operator. By blocking filtered threats, the system preserves comprehensive spatial awareness without overwhelming the operator with unnecessary warnings.
Data Source
AI summary
A method for collision threat filtering is disclosed. The method may include determining trajectory information associated with a plurality of machines. The method may include identifying, based on the trajectory information, one or more potential collisions among the plurality of machines, the one or more potential collisions including a potential collision between a first machine, of the plurality of machines, and a second machine of the plurality of machines. The method may include determining whether to filter the potential collision between the first machine and the second machine. Whether the potential collision is filtered may be determined based on a set of filtering parameters and machine information associated with at least one of the first machine or the second machine. The method may include selectively performing a collision prevention action, associated with the potential collision, based on whether the potential collision is to be filtered.