Digital Key Calibration Using Model-Based BLE and UWB Correction Values
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Solution Overview
Problem
Existing information processing devices in vehicles require complex and resource-intensive calculations for calibrating Bluetooth Low Energy (BLE) and ultra wide band (UWB) communications to determine the operating area of digital keys, leading to increased processing load and storage capacity demands.
Innovation Solution
A network system comprising a vehicle, a mobile information terminal, and an information processing device, where a database with pre-recorded correction values for each mobile terminal model is stored, allowing the processing circuit to identify the model, extract corresponding correction values, and transmit them to the vehicle for calibration, thereby reducing the need for local calculations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the vehicle performs local measurement and calculation of correction values for BLE and UWB calibration, then the calibration accuracy is improved, but the processing load and storage capacity demands increase
Solution Approach 1:
The patent extracts the correction value calculation function from the vehicle and relocates it to an external information processing device (such as a server or cloud platform). The vehicle only needs to transmit raw measurement data and receive pre-calculated correction values, significantly reducing its processing load while maintaining calibration accuracy.
Solution Approach 2:
The correction values are calculated and stored in advance by the information processing device based on collected measurement data from multiple terminals. When a vehicle needs calibration, it simply retrieves the pre-calculated correction values corresponding to its terminal models, avoiding the need for complex real-time calculations.
2Measurement precision
If the vehicle performs local measurement and calculation of correction values for BLE and UWB calibration, then the calibration accuracy is improved, but the storage capacity demands increase
Solution Approach 1:
The patent extracts the large-scale data storage function from the vehicle to an external information processing device. The vehicle only stores minimal identification information (terminal model numbers) and receives correction values as needed, dramatically reducing storage requirements while maintaining access to accurate calibration data.
Solution Approach 2:
The information processing device serves multiple vehicles and terminal models centrally, creating a shared calibration database. This universal approach allows correction values to be generated once and reused across multiple vehicles, eliminating the need for each vehicle to maintain its own complete calibration dataset.
3Productivity
If pre-recorded correction values are stored and transmitted instead of performing local calculations, then the processing load is reduced, but the calibration process requires additional communication steps
Solution Approach 1:
The information processing device performs all complex correction value calculations in advance and stores them in a ready-to-use format. During actual vehicle operation, the vehicle only needs to identify its terminal models and retrieve the corresponding pre-calculated values, transforming a complex calculation process into a simple data retrieval operation.
Data Source
AI summary
An information processing device is configured to communicate with both a vehicle and a mobile information terminal in which a digital key for the vehicle is registered. The information processing device includes a processing circuit and a storage device. The storage device stores a database, in which a correction value for calibration of the ranging, performed by the vehicle to determine that the mobile information terminal is within an operating area of the digital key, is recorded in advance for each model of the mobile information terminal. The processing circuit is configured to execute acquiring of information identifying the model from the mobile information terminal, extracting of the correction value corresponding to the model of the mobile information terminal from the database, based on the information that is acquired, and transmitting of the correction value that is extracted to the vehicle.