Pressure-Based Machine Localization for Floor-Level Elevation Tracking
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Solution Overview
Problem
At work sites with multi-level structures or height restrictions, there is a need for systems and methods to accurately determine the location and vertical position of machines and their loads, as existing technologies lack effective localization and tracking capabilities.
Innovation Solution
A local fleet connectivity system with elevation-based machine localization uses pressure sensors to determine the floor location of machines within a wireless mesh network, calculating relative height differentials between machine chassis and loads, and transmitting operational heights for external consumption or use in machine controls, employing communication protocols like Bluetooth Low Energy for machine-to-machine communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pressure sensors are used to determine elevation, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent uses pressure sensors as intermediary devices to indirectly measure elevation by detecting pressure differences at different heights. Instead of directly measuring elevation, the system measures pressure (which varies with elevation) and converts it to elevation data, resolving the contradiction by using a simpler pressure measurement approach to achieve precise elevation determination.
Solution Approach 2:
The patent replaces complex mechanical elevation measurement systems with pressure-based sensing. By substituting mechanical height measurement mechanisms with pressure sensors that naturally detect elevation through atmospheric pressure variations, the system achieves precise measurement while reducing mechanical complexity.
2Measurement precision
If multiple sensors are deployed on machines, then measurement precision is improved, but loss of substance increases
Solution Approach 1:
The patent makes pressure sensors multi-functional by using them for both elevation determination and localization purposes. A single pressure sensor deployment provides dual benefits: measuring vertical elevation and contributing to horizontal position tracking, thereby reducing the total number of sensors needed and minimizing material consumption while maintaining high measurement precision.
Solution Approach 2:
The patent combines elevation sensing and localization functions into a unified sensor network. By merging these two measurement objectives into a single integrated system using pressure sensors, the patent reduces redundant component deployment and minimizes material usage while achieving both measurement goals with high precision.
3Ease of operation
If wireless mesh network is implemented for machine communication, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The patent implements a self-organizing wireless mesh network where machines automatically establish connections and routes without manual configuration. The network nodes autonomously manage communication paths, enabling easy machine coordination while the system handles network complexity internally, resolving the contradiction by making the complex network management transparent to users.
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
This system enables precise machine localization, enhances safety by preventing over-height operations, and facilitates efficient coordination and control of multiple machines on a work site, improving operational efficiency and safety.
Implementation Method 1
determine a relative pressure difference between a sensor on a machine chassis and an additional sensor at a load borne by the machine
Data Source
AI summary
A method of determining a relative elevation of a work machine. The method includes receiving a first pressure reading from a first pressure sensor coupled to a chassis of a work machine and receiving a second pressure reading from a second pressure sensor. The method also includes calculating a first relative elevation of the chassis of the work machine relative to the second pressure sensor by comparing the first pressure reading to the second pressure reading.