Indoor Positioning Tag Using Gravity Sensor for Signal Control

Solution Overview

Problem

Existing indoor positioning systems face challenges in accurately determining user position and reducing network traffic congestion due to limitations in signal transmission algorithms and power consumption.

Innovation Solution

Incorporating a gravity sensor in indoor positioning tags to dynamically adjust wireless signal transmission based on acceleration magnitude, direction, and duration of change, allowing for optimized transmission intervals and frequency adjustments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If wireless signal transmission is performed continuously to improve positioning accuracy, then positioning accuracy is improved, but network traffic congestion increases and battery power is consumed faster

Engineering Contradiction:

Improvepositioning accuracyVSAvoidbattery power consumption

Core Design Contradiction:

Measurement precisionVSLoss of energy

Solution Approach 1:

The patent implements periodic transmission of wireless signals by the positioning tag, where transmission occurs at predetermined time intervals rather than continuously. This periodic action reduces battery power consumption and network traffic while maintaining positioning accuracy by ensuring signals are transmitted frequently enough for accurate position calculation.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent dynamically adjusts the transmission frequency of wireless signals based on the movement state of the positioning tag. When the tag is detected to be moving, transmission frequency is increased to maintain positioning accuracy; when stationary, transmission frequency is reduced to conserve battery power and reduce network congestion.

Inventive Principle:

Principle #15Dynamics

2Measurement precision

If wireless signal transmission frequency is increased to improve positioning accuracy, then positioning accuracy is improved, but network traffic congestion increases

Engineering Contradiction:

Improvepositioning accuracyVSAvoidnetwork traffic volume

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

The patent implements periodic transmission of wireless signals by the positioning tag, where transmission occurs at predetermined time intervals rather than continuously. This periodic action reduces battery power consumption and network traffic while maintaining positioning accuracy by ensuring signals are transmitted frequently enough for accurate position calculation.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent dynamically adjusts the transmission frequency of wireless signals based on the movement state of the positioning tag. When the tag is detected to be moving, transmission frequency is increased to maintain positioning accuracy; when stationary, transmission frequency is reduced to conserve battery power and reduce network congestion.

Inventive Principle:

Principle #15Dynamics

3Measurement precision

If continuous positioning monitoring is performed to improve positioning accuracy, then positioning accuracy is improved, but device complexity increases

Engineering Contradiction:

Improvepositioning accuracyVSAvoidsystem complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent dynamically adjusts the transmission frequency of wireless signals based on the movement state of the positioning tag. When the tag is detected to be moving, transmission frequency is increased to maintain positioning accuracy; when stationary, transmission frequency is reduced to conserve battery power and reduce network congestion.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The positioning tag autonomously determines its own movement state using its accelerometer and automatically adjusts its signal transmission frequency accordingly, without requiring complex external control systems. This self-service approach maintains positioning accuracy while reducing system complexity.

Inventive Principle:

Principle #25Self-service

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 enhances positioning accuracy, conserves radio resources and battery power, and reduces network congestion while improving the overall efficiency of indoor positioning systems.

Implementation Method 1

The indoor positioning tag determines whether to start to transmit a wireless signal according to the acceleration magnitude, the acceleration direction, and the duration of acceleration change detected by the gravity sensor

Methodology Applied

Scientific EffectGravity sensor detection: Accelerometer

Data Source

PatentUS11864071B2Electronic device with a gravity sensor assisted positioning

Publication Date: 2024.01.02 QUANTA COMPUTER INC

AI summary

An electronic device includes an indoor positioning tag and an indoor positioner. The indoor positioning tag includes a gravity sensor. The indoor positioning tag determines whether to start to transmit a wireless signal according to the acceleration magnitude, the acceleration direction, and the duration of acceleration change detected by the gravity sensor, and adjusts the frequency of the transmission interval of the wireless signal.