BIM-Based Indoor Navigation with Dynamic Route Adaptation
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Solution Overview
Problem
In multiuse facilities like train stations and airports, users face confusion due to multiple entrances, restricted areas, changing equipment operations, and lack of clear emergency or barrier-free routes, which conventional navigation systems cannot effectively address, especially in real-time and with varying user permissions.
Innovation Solution
A route guidance system utilizing Building Information Modeling (BIM) data, combined with user profiles and real-time environmental sensors, to provide personalized and dynamic navigation within buildings, including augmented reality overlays for equipment usage and precautionary information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional navigation systems are used in multiuse facilities, then basic route guidance is provided, but users face confusion due to multiple entrances, restricted areas, changing equipment operations, and lack of real-time information
Solution Approach 1:
The navigation system dynamically adapts to changing conditions by receiving real-time data from environmental sensors (temperature, humidity, smoke, CO concentration) and automatically adjusting route guidance. The system changes operational parameters based on current environmental conditions, making the navigation adaptable to real-time changes in the facility.
Solution Approach 2:
The system incorporates feedback mechanisms by continuously monitoring environmental conditions through sensors and using this information to adjust route guidance. The navigation system receives feedback from sensor data about temperature, humidity, smoke, and CO levels, then modifies route recommendations accordingly to ensure safe and appropriate guidance.
2Adaptability or versatility
If comprehensive BIM data is integrated into the navigation system, then real-time and personalized route guidance is achieved, but system complexity increases
Solution Approach 1:
The BIM data serves multiple functions within the navigation system: it provides spatial information for route calculation, contains equipment operational data, stores facility information, and integrates sensor data processing. This multi-functional use of BIM data reduces the need for separate specialized systems while achieving personalized and adaptive navigation.
Solution Approach 2:
The system uses an information distribution server as an intermediary that manages the complex BIM data and coordinates between various components (sensors, terminal devices, navigation algorithms). This intermediary layer simplifies the overall system architecture by centralizing data management and reducing direct connections between numerous components.
3Measurement precision
If multiple entrances and restricted areas are considered in route planning, then navigation accuracy improves, but the time required to calculate optimal routes increases
Solution Approach 1:
The system performs preliminary actions by pre-processing and organizing BIM data including facility information, equipment locations, and restricted areas before navigation is needed. This pre-organization of spatial and operational data enables faster real-time route calculations while maintaining high accuracy, as the foundational information is already structured and ready for quick querying.
Data Source
AI summary
A request for a route guide to a destination in a building is received from a user terminal device. BIM data for the building is received, including material properties of the building elements, the material properties consisting of ease of slipping when wet, earthquake resistance, and flame retardancy base values. Security information for a route, real-time information for building status, and a user profile are received. A route guide to the destination in the building is created, based the BIM data, security information, real-time building status, and the user profile. Information from one or more environmental sensors is received indicating that an environmental event has been detected. Its current position is received from the user terminal device. The route guide from the user terminal device's current position is updated based on the environmental event, and the material properties of the building elements that are related to the environmental event.