Wireless Transmitter Surveying With Pose and Range Correlation
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Solution Overview
Problem
Existing wireless transmitter surveying methods in indoor environments are time-consuming and costly due to installer errors and interfering structural elements, requiring specialized equipment and trained operators for accurate location calibration.
Innovation Solution
A mobile computing device equipped with a rangefinder and tracking sensor determines the current pose and range values to generate accurate transmitter locations, updating a facility's map with corrected positions using a processor and memory to store and correlate identifier and range data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional surveying methods with specialized equipment are used, then measurement precision is improved, but device complexity and operation difficulty increase
Solution Approach 1:
The patent replaces complex mechanical surveying equipment with a mobile computing device using optical/range-finding technology. The rangefinder uses light-based measurement (likely laser or ultrasonic) to determine distances to transmitters, substituting mechanical measurement tools with optical/electromagnetic field-based measurement, thereby reducing device complexity while maintaining precision
Solution Approach 2:
The mobile computing device performs autonomous pose determination by processing data from its own tracking sensor and rangefinder. The device independently calculates its position and orientation without requiring external surveying infrastructure or specialized equipment, enabling self-service operation that simplifies the overall surveying system
2Measurement precision
If traditional surveying methods with trained operators are used, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The system performs automatic pose determination and location calculation through software processing of sensor data. The mobile computing device autonomously processes tracking sensor data and rangefinder measurements to compute transmitter positions, eliminating the need for manually operated complex equipment and reducing operator training requirements while maintaining measurement precision
Solution Approach 2:
The patent replaces manual operation of specialized surveying equipment with automated computational processing. Software algorithms automatically determine pose and calculate locations from sensor data, substituting skilled human operators with automated systems that are easier to operate while achieving comparable or superior precision
3Manufacturing precision
If extensive recalibration is performed to correct installer errors, then manufacturing precision is improved, but loss of time increases
Solution Approach 1:
The patent performs pose determination and location calculation in advance during the surveying process itself, rather than requiring separate recalibration operations later. By capturing range values and determining transmitter positions during initial deployment or periodic surveys, the system establishes accurate locations proactively, eliminating the need for time-consuming corrective recalibration operations
Solution Approach 2:
The patent replaces time-consuming manual recalibration procedures with automated range-based position calculation. Using the rangefinder's distance measurements and the mobile device's pose data, the system computationally determines transmitter locations directly, substituting iterative manual recalibration with a single-step calculation process that achieves the same precision much faster
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 approach simplifies and reduces the time and cost of surveying wireless transmitter locations by enabling on-site, operator-operated, efficient mapping and updating of transmitter positions, improving indoor locationing accuracy without the need for extensive recalibration.
Implementation Method 1
based on data from a tracking sensor, determine a current pose of a mobile computing device in a facility coordinate system
Implementation Method 2
receive, from a rangefinder of the mobile computing device, a range value indicating a distance between the current pose and the target wireless transmitter
Data Source
AI summary
A mobile computing device includes: a tracking sensor; a rangefinder; and a controller configured to: based on data from the tracking sensor, determine a current pose of the mobile computing device in a facility coordinate system, the facility containing a target wireless transmitter at an installed position; receive a transmission from the target wireless transmitter, containing an identifier of the target wireless transmitter; receive, from the rangefinder, a range value indicating a distance between the current pose and the target wireless transmitter; correlate the identifier with the range value, based on a property of the transmission; generate a location defining the installed position in the facility coordinate system, based on the current pose and the range value; and store the generated location in association with the identifier.