Vehicle Bluetooth Positioning for Inside-Outside User Detection
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Solution Overview
Problem
Existing vehicle positioning systems are limited to distance-specific localization, failing to provide the precision needed to determine whether a passenger is inside or outside the vehicle.
Innovation Solution
A collaborative positioning method using a primary Bluetooth device connected to multiple secondary Bluetooth devices at different vehicle locations, which sniff Bluetooth communication data to enhance positioning accuracy by determining signal strength, angle, and distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If distance-specific localization is used, then the positioning system is simple to implement, but the positioning precision is insufficient to determine whether a passenger is inside or outside the vehicle
Solution Approach 1:
The positioning system is segmented into a primary Bluetooth device and multiple secondary Bluetooth devices distributed at different locations on the vehicle. Each secondary device independently sniffs Bluetooth communication data and returns results, allowing the system to achieve high-precision multi-azimuth positioning without requiring a single complex centralized system
Solution Approach 2:
The secondary Bluetooth devices serve multiple functions: they sniff Bluetooth communication data, determine signal parameters (strength, angle, distance), and return results to the primary device. This multi-functionality reduces the need for separate dedicated components for each measurement task, achieving high precision without proportionally increasing system complexity
2Measurement precision
If multiple secondary Bluetooth devices are deployed at different vehicle locations, then positioning accuracy is improved through multi-azimuth measurement, but the device complexity increases
Solution Approach 1:
Each secondary Bluetooth device is designed to perform multiple measurement functions simultaneously - sniffing Bluetooth data, determining signal strength, calculating signal angles, and estimating distances. This multi-functionality allows the system to achieve comprehensive positioning information with fewer devices than would be needed if each function required a separate dedicated device
Solution Approach 2:
The secondary Bluetooth devices autonomously sniff Bluetooth communication data and independently determine positioning parameters without requiring direct control or coordination from the primary device during the measurement process. This self-service capability reduces the control complexity and communication overhead in the system
Data Source
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AI summary
The present invention provides a positioning method, apparatus and system, an electronic device, and a storage medium. The method comprises: in response to a Bluetooth connection operation between a user terminal and a master Bluetooth device, sending to a plurality of slave Bluetooth devices data transmission information corresponding to the Bluetooth connection operation, wherein each slave Bluetooth device monitors Bluetooth communication between the user terminal and the master Bluetooth device under the instruction of the data transmission information; receiving monitoring data respectively returned by the plurality of slave Bluetooth devices; and determining position information of the user terminal relative to a vehicle on the basis of the monitoring data respectively returned by the plurality of slave Bluetooth devices. According to the present invention, a master Bluetooth device and a plurality of slave Bluetooth devices arranged on a vehicle are used in combination for positioning, the plurality of slave Bluetooth devices are respectively arranged at different positions on a vehicle body, and data that can be monitored by the slave Bluetooth devices at different positions is also different, so that multi-directional positioning can be carried out, and the positioning precision is relatively high.