Navigation Mode Switching via GPS Speed Threshold
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Solution Overview
Problem
Conventional navigation devices require manual mode switching between vehicle and personal navigation modes, leading to user inconvenience and potential incorrect route guidance.
Innovation Solution
A navigation device equipped with a GPS receiver and controller that automatically switches between vehicle and pedestrian navigation modes based on calculated speed, using a threshold speed to determine the appropriate mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual mode switching is implemented between vehicle and personal navigation modes, then the navigation device can support both navigation types, but user convenience deteriorates due to required manual intervention
Solution Approach 1:
The navigation device automatically detects whether it is being used in vehicle or personal mode through sensors (accelerometer, GPS speed detection) and autonomously switches navigation algorithms without requiring user input. The system serves itself by determining the appropriate navigation mode based on detected motion patterns and speed thresholds.
2Reliability
If separate navigation devices are used for vehicle and personal navigation, then navigation algorithms can be optimized for each mode, but device complexity and cost increase
Solution Approach 1:
A single navigation device is designed to perform both vehicle navigation and personal navigation functions by incorporating multiple sensors (accelerometer, GPS receiver) and implementing different navigation algorithms that can be automatically selected. The device universally supports both navigation types through automatic mode detection based on speed thresholds and motion patterns.
3Measurement precision
If automatic mode switching based on speed threshold is implemented, then mode switching accuracy improves, but system complexity increases due to additional sensors and processing
Solution Approach 1:
The patent replaces manual mechanical switching with automatic electronic detection using sensors. The accelerometer and GPS receiver electronically detect motion patterns and speed, automatically triggering mode switches without mechanical intervention. This substitution of mechanical user action with electronic sensing and automated processing achieves precise mode detection.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables seamless and automatic mode switching, eliminating the need for user intervention and reducing errors in route guidance by accurately adapting to the user's mode of transportation.
Implementation Method 1
a Global Positioning System (GPS) receiver configured to receive a GPS signal
Data Source
AI summary
An apparatus and method are provided for switching a navigation mode between a vehicle navigation mode and a pedestrian navigation mode. The apparatus includes a Global Positioning System (GPS) receiver configured to receive a GPS signal; and a controller configured to calculate a speed of the apparatus by using the GPS signal received by the GPS receiver, compare the calculated speed of the apparatus with a threshold speed, and determine the navigation mode of the apparatus between the vehicle navigation mode and the pedestrian navigation mode based on the comparison.