Magnetic Proximity Awareness System for Mining Vehicles

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Solution Overview

Problem

Existing proximity awareness systems in mining environments face limitations, including interference between vehicles and unreliable warnings due to range issues and lack of coordination, which can lead to collisions between large mining vehicles and smaller utility vehicles, particularly in confined spaces like underground tunnels.

Innovation Solution

A vehicle proximity awareness system utilizing magnetic field transmitters and receivers with anti-collision capabilities, including wireless communication links based on IEEE 802.11 standards and Time Division Multiple Access (TDMA) algorithms, to prevent magnetic field interference and provide timely warnings to operators, along with a wireless mesh network for tracking and alerting vehicles of each other's proximity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple magnetic field transmitters are used in proximity awareness systems, then coverage and detection capability are improved, but magnetic field interference between transmitters increases

Engineering Contradiction:

Improveproximity awareness reliabilityVSAvoidmagnetic field interference

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent implements periodic transmission of magnetic field signals by transmitters, where each transmitter operates in alternating time slots rather than continuously or simultaneously. This periodic action with coordinated timing reduces magnetic field interference while maintaining reliable proximity detection across the mining site.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system incorporates feedback mechanisms where receivers detect magnetic field signals and transmit information back to the central controller, which then coordinates transmitter operations. This feedback loop enables dynamic adjustment of transmission timing to minimize interference while ensuring comprehensive coverage and reliable proximity awareness.

Inventive Principle:

Principle #23Feedback

2Device complexity

If transceivers operate independently without coordination, then system complexity is reduced, but warning timing reliability deteriorates due to interference

Engineering Contradiction:

Improvesystem coordination complexityVSAvoidwarning timing reliability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent introduces a central controller as an intermediary that coordinates between multiple transmitters and receivers. This intermediary manages transmission timing and resolves conflicts, ensuring reliable warning timing without requiring complex direct coordination between all transceiver pairs, thus balancing reliability with manageable system complexity.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If speed restriction is applied to mining vehicles, then collision risk is reduced, but productivity decreases

Engineering Contradiction:

Improvecollision risk reductionVSAvoidmining vehicle productivity

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent replaces mechanical speed restriction measures with an electronic proximity awareness system using magnetic field transmitters and receivers. This substitution provides active collision warning to drivers without imposing speed limits, thereby maintaining mining vehicle productivity while reducing collision risk through timely alerts rather than restrictive control.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The system enhances the reliability of proximity awareness by reducing magnetic field interference and ensuring timely warnings, thereby reducing the risk of collisions and improving safety in mining environments.

Implementation Method 1

a magnetic field transmitter on a first vehicle for transmitting a transmit magnetic field

Methodology Applied

Scientific EffectMagnetic field: Magnetic Field

Implementation Method 2

a wireless communication link between the magnetic field transmitter and the different source

Methodology Applied

Scientific EffectElectromagnetic radiation:

Data Source

PatentUS9726016B2Proximity awareness safety device and system

Publication Date: 2017.08.08 CATERPILLAR INC

AI summary

A vehicle proximity awareness system in a mine, including: a magnetic field transmitter on a first vehicle for transmitting a transmit magnetic field, the magnetic field transmitter including an anti-collision capability for reducing a likelihood of the transmit magnetic field being affected by a magnetic field from a different source; a magnetic field receiver on a second vehicle for receiving the transmit magnetic field from the first vehicle to provide a receive signal; and a processor on the second vehicle for processing the receive signal, and for providing an indication to an operator of the second vehicle when the first vehicle is within a proximity of the second vehicle.