Software Virtual Wall Mapping for Accurate Mobile Navigation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing virtual wall systems for mobile devices are cumbersome, costly, and prone to errors due to the need for additional hardware and environmental modifications, and can cause abnormal motor behavior and accuracy issues.
Innovation Solution
A virtual wall system that uses a communication module, interaction module, acquisition module, straight line extraction module, segmented search tree construction module, observation data fusion module, navigation map construction storage module, and motion control module to create a software-based solution that allows users to set and manage virtual walls without additional hardware, using algorithms like Hough transformation and SLAM for accurate navigation and obstacle avoidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If active emitters (infrared or ultrasonic) are used to create virtual walls, then mobile devices can detect boundaries and avoid regions, but additional hardware configuration is required which increases cost and operational complexity
Solution Approach 1:
The patent replaces physical active emitters with a virtual copy represented as graphical information in a navigation map. The virtual wall is stored as coordinate data (straight line equations) rather than physical infrared or ultrasonic emitters, eliminating the need for additional hardware while maintaining boundary detection functionality through software-based representation.
Solution Approach 2:
The patent substitutes the mechanical/optical system of active emitters and sensors with an information-processing system. Instead of using infrared or ultrasonic signals that require physical hardware, the system uses graphical editing environments to define virtual walls as coordinate data, which are then processed through path planning algorithms to guide mobile device movement.
2Reliability
If infrared emitters are used for virtual walls, then boundary detection is achieved, but signal diffusion causes angle errors and false reflections that reduce accuracy
Solution Approach 1:
The patent creates a virtual copy of the boundary as graphical information (coordinate data representing straight lines) rather than using physical infrared signals. This virtual representation eliminates signal diffusion problems entirely, as the boundary is defined mathematically through coordinate pairs and line equations rather than through physical light or sound waves that can diffuse and reflect.
3Reliability
If magnetic strips are used to create virtual walls, then mobile devices can detect boundaries through sensors, but manual installation is required which increases operational complexity and cost
Solution Approach 1:
The patent replaces physical magnetic strips with a virtual copy represented as graphical information in the navigation map. Users can define virtual walls through software interfaces by inputting coordinate data or selecting areas on a map, eliminating the need for manual physical installation of magnetic strips while maintaining reliable boundary detection through software-based path planning.
Solution Approach 2:
The patent substitutes the mechanical installation process of attaching magnetic strips to surfaces with an information-processing approach. Virtual walls are created and modified through software operations (adding coordinate points, drawing lines on maps) rather than physical manipulation of magnetic materials, significantly improving ease of operation.
4Reliability
If magnetic strips are installed in the environment to create virtual walls, then boundary detection is achieved, but the indoor environment must be modified which affects appearance and blocks pedestrian movement
Solution Approach 1:
The patent creates a virtual copy of the boundary as graphical information overlaid on the navigation map rather than installing physical magnetic strips in the environment. This allows the virtual wall to exist purely as data without modifying the physical space, maintaining environmental adaptability while achieving reliable boundary detection through software-based path planning that guides mobile devices to avoid designated areas.
Data Source
AI summary
The invention discloses a virtual wall system for mobile devices and implementation method thereof. The virtual wall system for mobile devices includes: communication module: which is mainly used for the transmissions of relevant map information, virtual wall information, positioning information, and task information, and act as a bridge; interaction module: by which users set, add or delete the virtual wall information of any shape through the graphical editing environment, and sends this information to the processing part of the intelligent mobile algorithm; acquisition module: which obtains the virtual wall information provided by the interaction module, stores relevant data. The present needs no additional cost to produce additional auxiliary hardware devices, and is more convenient, flexible and fast for use.