Robot Entry Timing Control for Safe Revolving Door Passage
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Solution Overview
Problem
Existing robots face challenges in safely passing through revolving doors, as they need to consider the characteristics of the door, the operating state, and the presence of moving individuals or objects.
Innovation Solution
A drivable robot equipped with sensors, a processor, and memory that identifies a revolving door in a photographed image, determines free space and object information, and controls the driver to enter the door at an optimal time based on this information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the robot enters the revolving door immediately upon detection, then the response time is reduced, but the safety is compromised due to potential collisions with objects or individuals
Solution Approach 1:
The robot performs preliminary analysis of the revolving door environment before entry, including identifying free space, detecting objects and individuals, and predicting their movement trajectories. This preliminary action allows the robot to determine a safe entry time point in advance, rather than entering immediately upon detection, thus resolving the contradiction between rapid response and safety.
2Reliability
If the robot waits for complete clearance before entering, then safety is improved, but the productivity decreases due to longer waiting time
Solution Approach 1:
The robot dynamically adjusts its entry decision based on real-time analysis of object movement trajectories and free space changes. Rather than using a fixed waiting period, the system continuously monitors the environment and determines the optimal entry moment when safety conditions are met, thus improving productivity while maintaining safety.
Solution Approach 2:
The robot uses feedback from continuous environmental monitoring, including sensor data about objects and individuals in the revolving door area, to dynamically adjust its entry timing. This feedback mechanism allows the robot to enter as soon as safety conditions are satisfied, rather than waiting for complete clearance, thus resolving the contradiction between safety and efficiency.
3Device complexity
If the robot uses simple collision avoidance, then the device complexity is reduced, but the measurement precision of safe passage determination is insufficient
Solution Approach 1:
The robot performs preliminary identification of free space and analysis of object trajectories before making entry decisions. This preliminary analysis uses sensor data to accurately determine safe passage conditions, going beyond simple collision avoidance to provide precise safety determination while maintaining relatively simple system architecture.
Data Source
AI summary
A drivable robot includes: at least one sensor; a driver; at least one processor; and memory storing one or more instructions that, when executed by the at least one processor, cause the robot to: based on identifying a revolving door in a photographed image obtained by the at least one sensor, identify free space information of a free space inside the revolving door and object information of an object that is to enter the revolving door based on the photographed image; identify a first time point for the robot to enter the revolving door based on the free space information and the object information; and control the driver such that the robot enters the revolving door at the first time point.