Vehicle Location Data Validation Using Sensor Comparison
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Solution Overview
Problem
Existing navigation systems are limited in storing and recalling location data accurately, especially when GPS coverage is poor, leading to inaccurate vehicle location depiction if the device is not connected promptly after starting the vehicle or if the vehicle has moved since the last known location was stored.
Innovation Solution
The system uses vehicle on-board sensors like odometers and speedometers to verify the accuracy of stored location data, prompting users to delete or use potentially incorrect data, and allows for navigation using last known location data when GPS is unavailable by comparing current and historical sensor readings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system stores location data without immediate GPS verification, then navigation can proceed without GPS signal, but the location data may become inaccurate if the vehicle moves before device connection
Solution Approach 1:
The system performs preliminary actions by storing the vehicle's current location data and sensor readings (odometer, speedometer) before the device is disconnected or GPS signal is lost. This preliminary data capture allows the system to later verify whether the stored location remains accurate by comparing sensor readings, enabling reliable navigation even when immediate GPS verification is unavailable.
2Measurement precision
If the system uses vehicle sensors to verify location data accuracy, then location accuracy can be maintained without GPS, but the device complexity increases
Solution Approach 1:
The system leverages existing vehicle sensors (odometer, speedometer) that are already part of the vehicle's onboard equipment to verify location data accuracy. By using these pre-existing sensors for self-verification, the system avoids adding complex external verification devices while maintaining location accuracy through sensor-based validation of stored location data.
3Measurement precision
If the system prompts users to manage suspect location data, then navigation accuracy is maintained, but the ease of operation decreases
Solution Approach 1:
The system implements feedback by monitoring vehicle sensor readings (odometer, speedometer) and comparing them against the stored historical data to determine whether saved location data remains accurate. This automated feedback mechanism reduces the need for manual user verification while maintaining navigation accuracy, as the system automatically identifies when location data has become suspect based on sensor-based movement detection.
Data Source
AI summary
A system and method for recalling and utilizing location data are presented. A connection between a device and a vehicle is detected. After the connection is detected, a first set of data stored on the device is identified. The first set of data includes a last known location of the vehicle. A current value of a vehicle sensor is compared to a historical value of the vehicle sensor. The historical value was captured from the vehicle sensor at about a time the first set of data was stored on the device. When the current value of the vehicle sensor is the same as the historical value of the vehicle sensor, the first set of data is used to define a current location of the vehicle.