Behavior Analysis Using Code Division Multiplexing
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Solution Overview
Problem
Conventional behavior analysis techniques in stores require a large number of electronic devices transmitting unique signals, leading to increased man-hours and costs.
Innovation Solution
A behavior analysis device with a plurality of wireless transmitters that transmit unique signals periodically, a mobile electronic device to receive and record these signals, and a data analysis device to determine state information by comparing prerecorded patterns, allowing for extended communication distances and reduced transmitter numbers without degrading position resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a large number of electronic devices transmitting unique signals are installed in the store, then fine movement unit behavior analysis results can be obtained, but the number of man-hours and equipment cost increase
Solution Approach 1:
The patent merges the functions of multiple transmitters into a single transmitter by using code division multiplexing. Multiple unique signals are combined into one transmission channel, and the mobile device separates them through correlation processing. This reduces the number of physical transmitters needed while maintaining the ability to track fine movement units.
Solution Approach 2:
The single transmitter is designed to perform multiple functions by transmitting multiple unique signals simultaneously through code division. Each signal corresponds to a different virtual transmitter location, allowing one physical device to replace multiple transmitters and maintain comprehensive coverage for behavior analysis.
2Device complexity
If the number of wireless transmitters is reduced, then equipment cost decreases, but communication distance and coverage area are limited
Solution Approach 1:
The patent extends coverage by adding a code dimension to the transmission. Instead of relying solely on spatial distribution of multiple transmitters, the system uses code division multiplexing to create virtual transmitters in different locations. This allows a single physical transmitter to provide coverage equivalent to multiple transmitters distributed throughout the store.
Solution Approach 2:
The system creates virtual copies of transmitters through code division. Each unique signal acts as a copy of a transmitter located at a specific position, even though only one physical transmitter exists. The mobile device can distinguish between these virtual copies through correlation processing, maintaining the illusion of multiple transmitters for accurate position tracking.
3Device complexity
If wireless transmitters are spaced farther apart, then the number of transmitters decreases, but position locating resolution degrades
Solution Approach 1:
The single transmitter performs the function of multiple transmitters by transmitting multiple unique signals that correspond to different virtual locations. This allows the system to maintain fine position resolution without needing multiple physically spaced transmitters, as the code structure provides the necessary spatial information.
Solution Approach 2:
The patent transitions from spatial separation of transmitters to code-based separation. Instead of relying on physical distance between transmitters to provide position information, the system uses unique codes to encode position data, allowing accurate position locating even when transmitters are not spatially distributed.
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 solution reduces the number of necessary wireless transmitters while maintaining high-resolution position locating, achieving cost-efficient and reliable behavior analysis in stores.
Implementation Method 1
a plurality of wireless transmitters disposed in a facility and each configured to transmit a unique signal periodically
Data Source
AI summary
In order to solve the problem of an increase in the number of electronic devices that transmit specific signals and are installed inside a store in order to obtain traffic line information, the present invention calculates position coordinates in a facility using a calculation formula based on the number of signals received and the pattern of the number of signals received, and determines traffic line information.