Mobile Body Speed Control by Road-Type Recognition
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Solution Overview
Problem
Conventional technologies do not effectively manage speed control for mobile objects that can traverse both roadways and prescribed regions like sidewalks, leading to inadequate control in these different environments.
Innovation Solution
A mobile object control device and method that includes a road-type recognition unit to differentiate between roadways and sidewalks, controlling speed based on the environment, with separate speed limits and optional occupant input for speed adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single speed limit is applied to mobile objects, then the control system is simple, but it cannot appropriately control speed in different environments (roadway vs. prescribed region)
Solution Approach 1:
The patent segments the operating environment into distinct road types (roadway and prescribed region) and applies different speed limits to each segment. The control unit identifies the current road type and enforces appropriate speed limits: first speed limit for roadways and second speed limit (lower than first) for prescribed regions, thereby achieving environment-specific control without overly complex systems.
Solution Approach 2:
The control system dynamically adjusts the speed limit based on the identified road type. Rather than using a fixed speed limit, the system changes the applicable speed limit parameter according to whether the mobile object is on a roadway or prescribed region, enabling adaptability while keeping the control logic relatively simple.
2Reliability
If automatic speed control is implemented without occupant input, then safety is improved, but the occupant's ability to control speed is reduced
Solution Approach 1:
The patent incorporates feedback from the occupant through operation elements that allow speed increase or decrease requests. The control unit receives these requests and adjusts the target speed accordingly, while still enforcing the applicable speed limit for the current road type. This feedback mechanism maintains occupant control capability while ensuring safety through automatic limit enforcement.
Solution Approach 2:
The system changes the target speed parameter based on both automatic road type identification and occupant requests. The control unit adjusts the target speed within the bounds of the applicable speed limit, balancing automatic safety control with occupant operational control through parameter adjustment.
Data Source
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AI summary
A mobile object control device for controlling a mobile object capable of moving both on a roadway and in a prescribed region different from the roadway includes a road-type recognition unit configured to recognize whether the mobile object is moving on the roadway or in the prescribed region and a control unit configured to at least partially control a speed of the mobile object. The control unit limits the speed of the mobile object moving on the roadway to a first speed and limits the speed of the mobile object moving in the prescribed region to a second speed that is lower than the first speed.