Vehicle Location Sharing via Dead Reckoning Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing emergency call systems face reliability issues in transmitting accurate vehicle location information when GNSS or GPS signals are malfunctioning or unavailable, leading to delays in emergency assistance.
Innovation Solution
A location information sharing system that integrates an emergency call system and a navigation system, using dead reckoning compensation to calculate and share vehicle location information, ensuring accuracy even in areas with poor satellite signal reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the emergency call system relies solely on GNSS/GPS for location information, then the system structure remains simple, but the reliability of location transmission deteriorates when satellite signals are unavailable or malfunctioning
Solution Approach 1:
The patent combines the emergency call system and navigation system into an integrated location information sharing system. The navigation system's dead reckoning module compensates for GNSS/GPS signal failures by providing alternative location calculations based on vehicle speed, direction, and time data from sensors like accelerometers and gyroscopes, thereby improving reliability without requiring a completely separate backup system.
Solution Approach 2:
The system performs preliminary location compensation calculations using dead reckoning before GNSS/GPS signals fail. By continuously updating the vehicle's position based on motion sensors and maintaining a buffer of location data, the system ensures that location information is already prepared and can be transmitted immediately when satellite signals become unavailable, reducing transmission delays.
2Measurement precision
If the emergency call system uses compensation location calculation, then the accuracy in areas with poor satellite signals improves, but the device complexity increases due to additional calculation units
Solution Approach 1:
The navigation system's dead reckoning module, originally designed for general navigation purposes, is made multi-functional by enabling it to serve both navigation guidance and emergency call location provision. This universal module performs compensation location calculations that benefit both normal navigation operations and emergency situations, avoiding the need for a dedicated, complex compensation system solely for emergency calls.
Solution Approach 2:
The integrated system uses its own existing sensors (accelerometers, gyroscopes, speed sensors) and calculation capabilities to self-compensate for GNSS/GPS signal failures. Rather than requiring external backup systems or complex additional hardware, the system leverages its own navigation infrastructure to generate compensation location data, reducing overall system complexity.
3Reliability
If the emergency call system shares location information with the navigation system, then the reliability of location data improves, but the information security risk increases
Solution Approach 1:
The patent introduces a location information management module that acts as an intermediary between the navigation system and emergency call system. This mediator selectively shares location data based on predefined criteria and security protocols, ensuring that only necessary and verified location information is transmitted. The intermediary layer filters and validates data before sharing, reducing security risks while maintaining reliability benefits.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A location information sharing system includes an emergency call system and a navigation system provided in a vehicle, wherein the emergency call system comprises a first initial location calculation unit for generating a first initial location by receiving a global navigation satellite system (GNSS) or a global positioning system (GPS) signal transmitted from a GNSS or GPS satellite, a first compensation location calculation unit for generating a first compensation location compensated from the first initial location, a first transmitting/receiving unit for receiving a second initial location and a second compensation location transmitted from the navigation system, and a first control unit for outputting one location information of the first initial location, the first compensation location, the second initial location, and the second compensation location.