Vehicle Speed Restriction Detection Using Empty Travel Speed
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Solution Overview
Problem
Mining operations face inefficiencies and safety issues due to deviations in vehicle speeds and operating techniques, which are exacerbated by travel restrictions such as inclement weather, slippery roads, and equipment breakdowns, leading to increased costs and reduced productivity.
Innovation Solution
A system and method for determining when a vehicle is subject to a travel restriction by measuring actual travel empty speed and comparing it to historical speeds, using sensors to detect payload and position states, and adjusting vehicle performance parameters based on established norms to optimize operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If vehicle speed is increased to improve productivity, then material transport efficiency improves, but safety and equipment reliability deteriorate due to deviations from normal operating ranges
Solution Approach 1:
The system continuously monitors vehicle speed using speed sensors and compares actual speed against established normal ranges. When deviations are detected, the system provides feedback to operators through displays or alerts, enabling real-time speed adjustment to maintain both productivity and equipment reliability.
Solution Approach 2:
The system dynamically adjusts operational parameters by establishing and monitoring speed ranges based on historical data and normal operating conditions. By changing the parameter monitoring approach from fixed values to adaptive ranges, the system optimizes both transport efficiency and equipment reliability simultaneously.
2Reliability
If vehicle speed is reduced to improve safety and equipment reliability, then operating safety improves, but productivity deteriorates due to slower material transport
Solution Approach 1:
The system implements dynamic speed management by continuously adjusting recommended speed ranges based on real-time conditions, vehicle state, and historical performance data. This allows operators to optimize speed for both safety and productivity rather than adhering to static speed limits.
Solution Approach 2:
The system changes the approach to speed control by establishing adaptive normal speed ranges rather than fixed speed limits. This enables productivity optimization while maintaining safety through continuous parameter adjustment based on operational context.
3Reliability
If travel restrictions are imposed to address safety concerns, then equipment protection improves, but cycle time increases leading to reduced productivity
Solution Approach 1:
The system applies partial restrictions by monitoring vehicle state (loaded vs. unloaded) and applying speed guidance selectively. Unloaded vehicles returning to loading areas can operate at higher speeds without compromising equipment, while loaded vehicles receive protective speed guidance, thus reducing unnecessary time loss.
Solution Approach 2:
The system applies different speed guidance characteristics to different vehicle states and locations. Unloaded vehicles on return trips receive different speed recommendations compared to loaded vehicles during material transport, optimizing both equipment protection and cycle time for each specific condition.
4Productivity
If speed monitoring and evaluation systems are implemented to optimize vehicle operation, then operating efficiency improves, but system complexity increases due to additional sensors and control mechanisms
Solution Approach 1:
The system uses universal components with multiple functions. Speed sensors serve both safety monitoring and productivity optimization functions. The control system provides both real-time feedback and historical analysis capabilities through a single integrated platform, reducing overall system complexity.
Solution Approach 2:
The system performs self-evaluation by automatically comparing actual vehicle performance against established normal ranges and generating operational assessments without requiring external intervention. This automation reduces the need for additional monitoring equipment and manual evaluation processes.
Data Source
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AI summary
Systems and methods of operating a vehicle subject to a travel restriction determine when the vehicle is traveling in an unloaded state; determine a speed of the vehicle when the vehicle is traveling in the unloaded state to produce an actual travel empty speed; compare the actual travel empty speed with an historical travel empty speed for the vehicle; and determine that the vehicle operation is subject to the travel restriction when the actual travel empty speed is less than a predetermined percentile of the historical travel empty speed. When the vehicle operation is not subject to the travel restriction, the systems and methods further evaluate vehicle operation based on an established performance parameter for the vehicle under a normal operating condition; and change a vehicle performance parameter during future vehicle operation based on the evaluation.