Object Arrangement Estimation via Wireless Response Times
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Solution Overview
Problem
Existing methods for estimating the arrangement of wireless devices are inaccurate due to weakened radio field intensities caused by obstacles, leading to unreliable positioning.
Innovation Solution
An estimation system that utilizes response times between wireless devices connected to objects to determine their arrangement patterns, combining object and wireless device information to enhance accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If radio field intensities are used to estimate distances between wireless devices, then the arrangement of wireless devices can be obtained, but the estimation accuracy deteriorates when obstacles weaken the radio field intensities
Solution Approach 1:
The patent introduces response time as an intermediary parameter to indirectly determine distance between wireless devices. Instead of directly measuring radio field intensity, the system uses response time (which correlates with distance) as a mediator that is not affected by obstacles in the same way radio waves are. This resolves the contradiction by providing an alternative measurement path that maintains reliability while achieving accurate arrangement estimation.
2Measurement precision
If response times between wireless devices are used to estimate arrangement, then positioning accuracy improves, but the system complexity increases due to additional information processing requirements
Solution Approach 1:
The patent makes the wireless devices themselves perform multiple functions: they both communicate business data and measure response times for positioning. By integrating the positioning measurement function into the existing wireless communication infrastructure, the system achieves accurate positioning without adding separate dedicated positioning hardware or complex external measurement systems, thus limiting the increase in overall system complexity.
Solution Approach 2:
The wireless devices autonomously measure their own response times to each other and independently participate in the arrangement estimation process. Each device serves itself by providing both the measurement capability and the data needed for positioning, eliminating the need for external positioning infrastructure and reducing system complexity while maintaining high positioning accuracy.
3Measurement precision
If combination of object arrangement pattern information and wireless device response times is used, then arrangement estimation accuracy improves, but the difficulty of detecting and measuring increases
Solution Approach 1:
The patent segments the estimation process into distinct components: obtaining object arrangement pattern information, obtaining response times between wireless devices, and combining these to estimate the arrangement. By breaking down the complex measurement task into separable steps, the system can process each type of information independently using appropriate methods, then integrate the results, thereby reducing the overall difficulty of detection and measurement while achieving high accuracy.
Data Source
AI summary
An estimation system estimates the arrangement of objects. The estimation system includes an estimation unit. The estimation unit obtains information related to an arrangement pattern of the objects as first information and obtains, from wireless devices respectively connected to the objects, information including response times between the wireless devices as second information to estimate the arrangement of the objects based on the first information and the second information.