Robot Elevator Entry Control in Heavy Passenger Traffic
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Solution Overview
Problem
Robots face challenges in taking elevators during heavy traffic situations, as they cannot navigate through crowded spaces effectively.
Innovation Solution
A robot control method and apparatus that involves obtaining the distance between the robot and obstacles as it moves from a target elevator-waiting place to a target elevator-taking place. If the distance exceeds a preset threshold, the robot is controlled to move towards the target elevator-taking place at a preset speed until it enters the elevator car.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the robot selects an elevator with small passenger flow and low busyness, then the robot can take the elevator smoothly, but in scenes with heavy traffic, the robot cannot take the elevator
Solution Approach 1:
The patent implements dynamic speed adjustment based on real-time distance measurement. The robot controller dynamically changes the robot's movement speed according to the distance between the robot and obstacles (passengers), allowing the robot to adapt to varying elevator traffic conditions. When distance exceeds the threshold, the robot moves at first speed; when distance is within the threshold, the robot moves at second speed (slower), enabling successful navigation in heavy traffic scenarios.
2Productivity
If the robot moves at a normal speed towards the elevator, then the robot can enter the elevator efficiently, but when the distance to obstacles is small, the robot may collide with passengers
Solution Approach 1:
The patent employs a feedback mechanism where the robot controller continuously receives distance information from the detector about the space between the robot and obstacles. Based on this feedback, the controller adjusts the robot's speed in real-time. When the distance is greater than the threshold, the robot moves at normal (first) speed for efficiency. When the distance is less than or equal to the threshold, the robot reduces speed to (second speed) to avoid collision, thus balancing efficiency and safety.
Solution Approach 2:
The patent changes the motion parameter (speed) of the robot based on the distance parameter. By establishing a distance threshold and adjusting speed according to whether the distance exceeds this threshold, the system optimizes the robot's movement characteristics for different spatial conditions, enabling efficient entry when space is available and safe navigation when space is constrained.
3Object-affected harmful factors
If the robot uses a conservative movement strategy to avoid passengers, then the robot can safely navigate the elevator, but the robot cannot take the elevator in heavy traffic scenes
Solution Approach 1:
The patent transforms the robot's movement from a static speed mode to a dynamic speed adjustment mode. By continuously measuring distance and adjusting speed accordingly, the robot can navigate through heavy traffic scenes that would be impassable with conservative fixed-speed strategies. The dynamic adjustment allows the robot to exploit available space while maintaining safety margins.
Data Source
AI summary
In one aspect, a robot control method includes: during the process of a robot advancing from a target elevator-waiting place to a target elevator-taking place in an elevator car, acquiring the distance between the robot and an obstacle; and if the distance is greater than a preset distance threshold value, controlling the robot to advance to the target elevator-taking place at a preset speed until the robot enters the elevator car.