Vehicle Emergency Call System Trajectory Analysis

Solution Overview

Problem

Conventional emergency call systems for vehicles rely solely on GPS data, which may be inaccurate or unreliable, leading to delays in identifying the vehicle's location during emergencies, especially in situations like overpasses or complex road junctions.

Innovation Solution

An emergency call system that collects and transmits vehicle operation information over a predetermined period, including latitude, longitude, traveling direction, and speed, to an emergency rescue server, which corrects and analyzes this data to estimate the vehicle's location accurately, even when GPS data is unreliable, and notifies nearby vehicles of accidents.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If GPS data is used to determine vehicle location, then the location information can be obtained quickly, but the accuracy may not be guaranteed 100% especially in complex road situations like overpasses

Engineering Contradiction:

Improvelocation accuracyVSAvoidtime to identify rescue site

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The system performs preliminary actions by continuously collecting and storing vehicle operation information (latitude, longitude, traveling direction, speed) at predetermined time intervals before an emergency occurs. This pre-collected data is stored in the controller's memory, so when an emergency call is made, the system already has a dataset of recent vehicle trajectory information ready for analysis, eliminating the need to collect data in real-time during the emergency situation.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system introduces an intermediary analysis process that uses multiple data points (vehicle operation information including direction and speed) to mediate between the GPS coordinates and the actual vehicle location. By analyzing the trajectory pattern formed by multiple consecutive location points, the system can accurately determine the vehicle's position on complex road structures like overpasses, bridges, or intersections where single-point GPS data may be ambiguous.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If only current GPS data is transmitted, then the data transmission is simple and fast, but the location cannot be accurately identified from between overpass or road below

Engineering Contradiction:

Improvevehicle location identification accuracyVSAvoiddata collection and processing complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The system performs preliminary actions by continuously collecting and storing vehicle operation information (latitude, longitude, traveling direction, speed) at predetermined time intervals before an emergency occurs. This pre-collected data is stored in the controller's memory, so when an emergency call is made, the system already has a dataset of recent vehicle trajectory information ready for analysis, eliminating the need to collect data in real-time during the emergency situation.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system transitions from two-dimensional GPS coordinates to three-dimensional trajectory analysis by incorporating the time dimension. Instead of analyzing a single location point, the system analyzes a sequence of location points forming a trajectory path over time. This temporal dimension allows the system to understand the vehicle's movement pattern and accurately determine position on complex road structures where multiple roads may share similar coordinates.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Reliability

If vehicle information at a specific point in time is obtained, then the data collection is simple, but the information is not sufficient to identify traveling situation

Engineering Contradiction:

Improvevehicle traveling situation identification reliabilityVSAvoidamount of vehicle operation data

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The system performs preliminary actions by continuously collecting and storing vehicle operation information (latitude, longitude, traveling direction, speed) at predetermined time intervals before an emergency occurs. This pre-collected data is stored in the controller's memory, so when an emergency call is made, the system already has a dataset of recent vehicle trajectory information ready for analysis, eliminating the need to collect data in real-time during the emergency situation.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system merges multiple data elements (latitude, longitude, traveling direction, and speed) that are collected at different time intervals into a unified trajectory dataset. By combining these different types of vehicle operation information, the system creates a comprehensive view of the vehicle's traveling situation that is more reliable than any single data point alone.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20230362613A1Emergency call system for vehicle and method thereof

Publication Date: 2023.11.09 HYUNDAI MOTOR CO LTD

AI summary

An emergency call system may comprise a call generator configured to generate an emergency call upon receiving a command for doing so from a user, the call generator provided in the vehicle, and a controller configured to collect emergency data at predetermined time intervals from the start of the vehicle, generate a dataset including the emergency data collected for a predetermined period of time, and transmit the dataset to an emergency rescue server in response to an occurrence of the emergency call.