Mobile Terminal Position Detection with Reference Calibration
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Solution Overview
Problem
Existing systems for detecting the relative position of mobile terminal devices with respect to vehicles face precision issues due to varying physical characteristics of different devices, leading to measurement value deviations that current technologies fail to adequately compensate.
Innovation Solution
The method involves generating and storing reference measurement values for a predefined relative position of a calibration device with respect to a calibration vehicle, which are then used to evaluate the current relative position of a mobile terminal device, compensating for measurement variances by considering device and vehicle-specific parameters, and allowing for pre-configuration of specific models and types without the need for additional reference devices or vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different mobile terminal devices are used for vehicle access, then device compatibility and versatility are improved, but measurement precision deteriorates due to varying physical characteristics of different devices
Solution Approach 1:
The patent applies parameter changes by storing reference measurement values for different mobile terminal device types and models in a database. When a device approaches the vehicle, the system identifies the device type and retrieves corresponding reference values, then uses these to compensate for device-specific measurement variations. This allows the system to maintain high measurement precision across diverse device types by dynamically adjusting parameters based on device characteristics.
2Measurement precision
If reference measurement values are stored in a database for each device type, then measurement precision is improved, but device complexity and data storage requirements increase
Solution Approach 1:
The patent implements preliminary action by pre-generating and storing reference measurement values for various mobile terminal device types in a database before actual use. During operation, the system simply retrieves the appropriate reference values based on device identification, avoiding the need for complex real-time calculations or multiple reference devices. This preliminary preparation simplifies the operational complexity while maintaining high precision.
3Measurement precision
If multiple calibration devices and vehicles are used to generate reference measurement values, then measurement precision is improved, but the complexity of the calibration process increases
Solution Approach 1:
The patent applies copying by using a single calibration device and calibration vehicle to generate reference measurement values that represent multiple device types. Instead of requiring multiple physical calibration devices and vehicles, the system creates digital reference profiles that can be stored and reused. This copying approach maintains measurement precision while significantly reducing calibration complexity.
Data Source
AI summary
The invention relates to a method of detecting a relative position of a mobile terminal device with respect to a vehicle.It is provided for the method to include the following steps: generating reference measurement values relating to a predefined relative position of a calibration device with respect to a calibration vehicle, generating position measurement values which relate to the current relative position of the mobile terminal device with respect to the vehicle, evaluating the reference measurement values and the position measurement values for detecting the current relative position of the mobile terminal device with respect to the vehicle, and storing the generated reference measurement values in a database, wherein the database is a database outside the vehicle which the vehicle may access by means of a communication connection.The invention is based on the object to provide a possibility to minimize deviations in the detection of the relative positions of different mobile terminal devices with respect to a vehicle.