Indoor Positioning via Label Group Segmentation
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Solution Overview
Problem
Conventional GPS systems are inefficient for indoor positioning due to environmental limitations and interference from external signals, resulting in lower accuracy compared to outdoor positioning.
Innovation Solution
An indoor positioning system using positioning label groups with scanning devices that read signal variations between tracking labels and label units to identify the target object's location within a containing body, defining multiple interfaces to achieve accurate positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If GPS chip is used for indoor positioning, then positioning coverage is improved, but positioning accuracy deteriorates due to environmental limitations
Solution Approach 1:
The indoor space is segmented into multiple positioning areas, each covered by a positioning label group with multiple label units. The scanning device segments the signal reception by identifying which label units are visible from the target position, thereby determining the specific positioning area. This segmentation approach enables accurate indoor positioning by dividing the complex indoor environment into manageable zones.
2Ease of operation
If Bluetooth or Wi-Fi with RSSI positioning method is used, then positioning operation is simplified, but positioning accuracy deteriorates due to external signal interference
Solution Approach 1:
Positioning label groups with multiple label units serve as intermediaries between the scanning device and the positioning calculation system. These label units are strategically placed to create unique signal patterns for different positioning areas. The scanning device reads the signal strengths from multiple label units, and the system uses these intermediate measurements to accurately determine position without being affected by external wireless signal interference.
3Measurement precision
If multiple positioning label groups with multiple label units are deployed, then positioning accuracy is improved, but device complexity increases
Solution Approach 1:
Multiple label units are merged into positioning label groups that work together to define positioning areas. Instead of treating each label unit independently, the system combines their signal readings to create a unified positioning determination. The scanning device simultaneously reads multiple label units and the system integrates these measurements to identify the target's positioning area, reducing the operational complexity despite having multiple components.
Solution Approach 2:
The positioning label groups serve multiple functions: they define positioning area boundaries, provide signal strength references for triangulation, and enable identification of the target's location. Each label unit can be read by any scanning device in the system, and the same infrastructure supports both positioning and potential future positioning area expansion without requiring additional specialized components.
Data Source
AI summary
An indoor positioning system, for detecting a position of a target object located in a containing body, includes a tracking label, a plurality of positioning label groups, and a scanning device. The tracking label is disposed on the target object. Each positioning label groups is disposed on the containing body and has a plurality of label units. Each label unit defines a positioning interface, which forms a plurality of areas of the containing body. The scanning device senses and reads the tracking label and each label unit of each positioning label group. The scanning device obtains the positioning interface in which the tracking label is located through an analysis computation according to a signal relationship between the tracking label and each label unit, thereby identifying the positioning interface to obtain one of the areas of the target object in the containing body.