Indoor Positioning Using Appliance Geometry for Self-Service Anchors

Solution Overview

Problem

The deployment and setup of anchors for indoor positioning systems require professional expertise, leading to high labor costs and reduced accuracy due to potential changes in anchor orientation caused by user intervention.

Innovation Solution

An indoor positioning method that establishes a first coordinate system based on the geometric structure of home appliance devices, using angles and distances measured within this system to determine spatial positions in a geodetic coordinate system, eliminating the need for manual anchor setup and ensuring accurate positioning without professional intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If professional persons are required to set up anchors to ensure positioning accuracy, then positioning accuracy is improved, but labor costs and deployment complexity increase

Engineering Contradiction:

Improvepositioning accuracyVSAvoiddeployment complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The system enables self-service deployment by allowing devices to automatically establish their own coordinate systems and perform mutual positioning measurements without professional intervention. Each device with geometric structure information can autonomously participate in the positioning network, eliminating the need for expert installation while maintaining positioning accuracy through automated coordinate system management and measurement protocols

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The invention makes ordinary devices with geometric structures serve as positioning anchors, transforming single-function devices into multi-functional units that can both perform their original functions and participate in positioning operations. This universal application approach allows any device with known geometric dimensions to contribute to the positioning system, reducing deployment complexity while maintaining measurement precision

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Measurement precision

If professional persons are required to set up anchors, then positioning accuracy is improved, but labor costs increase

Engineering Contradiction:

Improvepositioning accuracyVSAvoiddeployment time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The system enables self-service deployment by allowing devices to automatically establish their own coordinate systems and perform mutual positioning measurements without professional intervention. Each device with geometric structure information can autonomously participate in the positioning network, eliminating the need for expert installation while maintaining positioning accuracy through automated coordinate system management and measurement protocols

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The geometric structure information of devices is pre-established and stored before deployment, allowing devices to immediately participate in positioning operations upon activation. This preliminary preparation of coordinate system data eliminates the need for time-consuming on-site measurements and professional setup procedures, significantly reducing deployment time while ensuring positioning accuracy

Inventive Principle:

Principle #10Preliminary action

3Ease of manufacture

If manual anchor setup is performed, then positioning system deployment is achieved, but orientation changes due to user intervention reduce accuracy

Engineering Contradiction:

Improvedeployment easeVSAvoidpositioning accuracy

Core Design Contradiction:

Ease of manufactureVSMeasurement precision

Solution Approach 1:

The system enables self-service deployment by allowing devices to automatically establish their own coordinate systems and perform mutual positioning measurements without professional intervention. Each device with geometric structure information can autonomously participate in the positioning network, eliminating the need for expert installation while maintaining positioning accuracy through automated coordinate system management and measurement protocols

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The invention replaces manual mechanical positioning and alignment procedures with automated computational methods. Instead of physically adjusting device orientations to match coordinate systems, the system uses mathematical coordinate transformations to account for any orientation differences, substituting mechanical alignment requirements with computational geometry solutions that maintain accuracy regardless of physical device orientation

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS12449501B2Indoor positioning method and device

Publication Date: 2025.10.21 HUAWEI TECH CO LTD

AI summary

An indoor positioning method includes: receiving a first measurement parameter obtained by a first device by measuring a second device in a first coordinate system, where the first measurement parameter includes a first angle and a first distance, the first angle is an angle of the second device in the first coordinate system, and the first distance is a distance of the second device relative to an origin of coordinates of the first coordinate system; determining a first spatial position of the second device in the first coordinate system based on the first angle and the first distance; and determining a spatial position of the second device in a geodetic coordinate system based on the first spatial position and a conversion relationship between the first coordinate system and the geodetic coordinate system.