3D Drive Assist Mapping for Sensor-Light Mobile Navigation
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Solution Overview
Problem
Existing drive assist technologies for mobile objects, such as electric wheelchairs and robots, require sensors to determine interference with obstacles, leading to high costs and limited accuracy due to processing constraints.
Innovation Solution
A drive assist apparatus that uses a storage unit with a three-dimensional model of the moving region, an input unit to receive height information from sensors in the region, an extraction unit to generate plan views from the three-dimensional model, a generation unit to create a combined map for assisting mobile object navigation, and an output unit to transmit this map to the mobile object.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If various sensors are installed on the mobile object to detect obstacles, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent introduces a server as an intermediary device that performs obstacle detection and interference determination. Instead of equipping mobile objects with complex sensor systems, the server receives image data from simple cameras and performs the complex processing centrally, then provides assistance information to mobile objects. This resolves the contradiction by transferring the measurement and processing burden from the mobile object to the server.
Solution Approach 2:
The patent creates a virtual three-dimensional model that copies the real-world environment, including obstacle positions and shapes. This virtual model allows the system to perform interference determination without requiring physical sensors on the mobile object. The mobile object receives assistance information based on this copied environmental representation, reducing the need for complex onboard sensing.
2Measurement precision
If various sensors are installed on the mobile object to detect obstacles, then measurement precision is improved, but cost increases
Solution Approach 1:
The server acts as a cost-effective intermediary that centralizes the expensive processing functions. Instead of each mobile object requiring expensive sensors and processing capabilities, a single server performs these functions for multiple mobile objects, significantly reducing the overall system cost while maintaining high measurement precision through centralized processing.
Solution Approach 2:
The server provides universal obstacle detection and interference determination services to multiple mobile objects simultaneously. This multi-functional approach allows the system to achieve high measurement precision for all users without each user needing to invest in expensive sensor systems, as the server's processing capability is shared across multiple clients.
3Measurement precision
If complex processing is performed on the mobile object to determine interference, then measurement precision is improved, but processing load increases
Solution Approach 1:
The server serves as a processing intermediary that handles the computationally intensive tasks of three-dimensional model generation and interference determination. Mobile objects only need to perform simple image capture and receive assistance information, dramatically reducing their processing load and energy consumption while maintaining high interference determination accuracy through the server's powerful processing capabilities.
Data Source
AI summary
A drive assist apparatus includes a storage unit that stores a three-dimensional model indicating a moving region, an input unit that receives, from a sensor group installed in the moving region, first height information indicating a first height which is a height of the mobile object and second height information indicating a second height which is a height of an object that satisfies a predetermined distance criterion from the mobile object, an extraction unit that extracts, from the three-dimensional model, a first plan view based on the first height information and a second plan view based on the second height information, a generation unit that generates a combined map for two-dimensionally showing the moving region and assisting the driving of the mobile object by combining the first plan view and the second plan view, and an output unit that transmits a generated combined map to the mobile object.