OBD-II Dongle Relocating GPS Processing to Conserve Mobile Battery
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Solution Overview
Problem
Conventional mobile smart devices experience reduced GPS/GNSS accuracy and battery life when used in urban canyons and low signal environments, as they struggle to maintain satellite signal lock, necessitating a more efficient method for obtaining navigational information.
Innovation Solution
An automotive OBD-II device with a dongle configuration that connects to a vehicle's diagnostic port, utilizing a GPS/GNSS chipset and communication protocols like WiFi, Bluetooth, and Ethernet to provide navigational information, including dead reckoning data, to auxiliary devices like smartphones and tablets, thereby bypassing internal GPS capabilities and conserving battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If on board GPS/GNSS is enabled in mobile devices, then position information can be obtained, but battery life is reduced especially in urban canyons and low signal environments
Solution Approach 1:
The patent introduces an intermediary device (separate GPS receiver or vehicle navigation system) that acts as a mediator between the satellite signals and the mobile device. This intermediary processes GPS/GNSS signals independently and provides position information to the mobile device without requiring the mobile device's internal GPS to be actively enabled, thereby preserving battery life while maintaining positioning capability.
Solution Approach 2:
The patent extracts the GPS/GNSS positioning function from the mobile device itself and relocates it to an external source (vehicle navigation system or separate receiver). By taking out the GPS processing burden from the mobile device, the system achieves position information acquisition without consuming the mobile device's battery power.
2Measurement precision
If mobile devices use internal GPS/GNSS in urban canyons, then position information can be obtained, but accuracy is reduced due to signal hunting
Solution Approach 1:
The patent employs an intermediary navigation system with more powerful signal processing capabilities that can reliably extract position information from weak GPS signals in urban canyon environments. This intermediary system stabilizes the signal acquisition process and provides accurate position data to mobile devices without suffering from the signal hunting problems that plague mobile device GPS receivers.
3Ease of operation
If conventional mobile devices obtain navigational information independently, then position data can be acquired, but device complexity increases and battery consumption rises
Solution Approach 1:
The patent extracts the navigation system from the mobile device and relocates it to an external vehicle-based system. This extraction eliminates the need for mobile devices to maintain independent GPS receivers and navigation processing capabilities, thereby reducing device complexity and power consumption while preserving ease of operation through automated information provision.
Data Source
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AI summary
A system includes a processor circuit and a computer readable storage medium. The processor circuit may be configured to plug into an on board diagnostic connector of a vehicle. The computer readable storage medium generally embodies computer executable instructions. The computer executable instructions, when executed by the processor circuit, enable the processor circuit to communicate with one or more busses of the vehicle and to communicate navigational information to an auxiliary device.