Dynamic Building Maps for Autonomous Mobile Body Navigation Near People
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Solution Overview
Problem
Existing autonomous mobile body systems cannot appropriately operate in regions where persons exist, as they do not account for human presence, leading to potential collisions and operational inefficiencies.
Innovation Solution
A map management device generates dynamic map information by integrating static building maps with real-time obstacle and person location data from security cameras and motion detectors, allowing the autonomous mobile body control device to adjust its control mode and route accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the autonomous mobile body operates in a region where persons exist without considering person location information, then the operation simplicity is maintained, but the safety and collision prevention capability deteriorates
Solution Approach 1:
The patent merges the static map information (building structure, fixed obstacles) with dynamic person location information from security cameras and motion detectors to create a unified dynamic map. This integration allows the autonomous mobile body to simultaneously consider both the building layout and real-time person positions, improving safety without requiring separate independent systems for each function.
Solution Approach 2:
The dynamic map serves multiple functions: it provides the basic building structure for navigation, overlays real-time person locations for collision avoidance, and enables adaptive route planning. This multi-functionality allows a single system to handle both navigation and safety concerns, reducing overall system complexity while improving reliability.
2Adaptability or versatility
If the autonomous mobile body uses static map information only, then the system complexity is reduced, but the adaptability to dynamic environments and real-time operation capability deteriorates
Solution Approach 1:
The patent transforms the static map into a dynamic map that is continuously updated with real-time person location information from security cameras and motion detectors. This dynamic representation allows the autonomous mobile body to adapt to changing environmental conditions and person movements, significantly improving adaptability to dynamic environments.
Solution Approach 2:
The system implements feedback loops where security cameras and motion detectors continuously monitor person locations, update the dynamic map, and feed this information back to the autonomous mobile body for real-time route adjustment. This feedback mechanism enables the system to adapt to dynamic environments while maintaining manageable complexity through automated information processing.
3Reliability
If the autonomous mobile body switches control modes based on person location, then the safety and collision prevention is improved, but the control system complexity increases
Solution Approach 1:
The patent applies different control strategies in different spatial contexts: when persons are detected in the dynamic map, the autonomous mobile body switches to a more cautious control mode with reduced speed and increased safety margins; when no persons are present, it operates in a more efficient mode. This local differentiation of control quality improves collision prevention while managing complexity through context-dependent behavior.
4Productivity
If the autonomous mobile body operates without integrating person location information, then the operation speed is maintained, but the productivity in regions with persons deteriorates
Solution Approach 1:
The system performs preliminary actions by continuously pre-processing and updating the dynamic map with person location information from security cameras and motion detectors before the autonomous mobile body needs to make navigation decisions. This advance preparation allows the mobile body to react quickly and efficiently when approaching regions with persons, improving productivity while minimizing time loss for collision avoidance maneuvers.
Data Source
AI summary
A map management device which can operate an autonomous mobile body also in a region where persons exist is provided. The map management device includes a dynamic map information generating unit which generates dynamic map information in which an obstacle is reflected on the basis of operation information on a facility obtained from a building facility management device and location information on a person obtained from a security camera or a motion detector, as map information to be used for controlling the autonomous mobile body with respect to static map information configured in advance with two-dimensional or three-dimensional grids for each floor of a building. According to this configuration, it is possible to operate the autonomous mobile body also in a region where persons exist.