On-board Terminal Device for Mine Vehicle Collision Prevention
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Solution Overview
Problem
Haulage vehicles in mines and construction sites face challenges with wireless communication interference due to the vehicle body's radio wave shielding effect, leading to potential collisions when vehicles enter regions where communication is not available.
Innovation Solution
An on-board terminal device equipped with GPS, a transmitter, receiver, and a computer that estimates other vehicle locations, calculates relative distances, and executes alarm processes or control signals when communication is interrupted, specifically identifying regions with poor reception to prevent collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the vehicle body is used for haulage operations, then productivity is improved, but radio wave shielding effect increases causing communication black spots
Solution Approach 1:
The patent replaces the mechanical wireless communication system with a hybrid approach that incorporates GPS-based location estimation. This substitution allows the vehicle body to maintain its haulage function without modification while the GPS system compensates for the radio wave shielding effect in regions behind and beside the vehicle
2Reliability
If GPS and location estimation methods are used to compensate for communication failure, then collision prevention reliability is improved, but device complexity increases
Solution Approach 1:
The patent makes the computer serve multiple functions: it processes wireless communication data for vehicle location detection, processes GPS location information, estimates other vehicle locations, calculates relative distances, and executes collision prevention algorithms. This multi-functionality reduces the need for separate dedicated hardware components
Data Source
AI summary
An on-board terminal device includes a location measuring section that measures a location of an own vehicle, a wireless communication section that transmits own vehicle information including location information of the own vehicle to other vehicles and receives other vehicle information including location information of the other vehicles from the other vehicles by execution of wireless communication with the other vehicles, and a monitoring section that estimates the location of the other vehicles and calculates a relative distance between the own vehicle and the other vehicles when the wireless communication has been interrupted, and executes an alarm process for preventing collision of the own vehicle and the other vehicles when the relative distance is less than a predetermined threshold.