Path Risk Evaluating Apparatus for Secondary Collision Avoidance
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Solution Overview
Problem
In complex environments like households, industrial robots face challenges in avoiding collisions with objects due to low position recognition accuracy, unstable control, and high-speed movement demands, leading to potential damage from secondary collisions when moving or grasping objects.
Innovation Solution
A path risk evaluating apparatus that assesses the likelihood of secondary collisions and damage by evaluating the movement path of a mobile device, considering object positions and attributes, to select paths with low damage risk and adjust movement speeds accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the robot moves at high speed to complete tasks efficiently, then productivity is improved, but the risk of collision with objects increases
Solution Approach 1:
The system performs preliminary risk evaluation of movement paths before the robot executes motion. By calculating collision risk in advance based on object positions, movement parameters, and environmental factors, the system can select safe high-speed paths or adjust trajectories to avoid collisions, enabling fast motion without compromising safety
Solution Approach 2:
The system continuously monitors object positions and robot state, then feeds this information back to the risk evaluation module. This real-time feedback allows dynamic adjustment of movement paths and speeds, enabling the robot to maintain high productivity while adapting to changing environmental conditions that may increase collision risk
2Loss of time
If the robot moves at high speed, then task completion time is reduced, but the damage from secondary collisions increases
Solution Approach 1:
The risk evaluation system assesses potential secondary collision risks before the robot moves. By identifying paths where objects might be displaced and cause secondary collisions, the system can select alternative routes or adjust speeds in advance, preventing damage while maintaining efficient task completion
Solution Approach 2:
The risk evaluation apparatus acts as an intermediary between the motion planning system and the physical environment. It mediates by filtering out high-risk paths and recommending safe trajectories, thus protecting objects from damage while allowing the robot to move efficiently
3Measurement precision
If position sensors are added to improve positioning accuracy, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The system uses existing sensors (cameras, LIDAR, or simple position sensors) for multiple purposes: not only for basic navigation but also for precise object position recognition and collision risk evaluation. By making the sensor system multi-functional, additional positioning capability is achieved without adding dedicated sensors
Solution Approach 2:
Instead of adding physical sensors, the system creates virtual models or copies of the environment using data from existing sensors. These virtual representations are then used for precise position recognition and risk evaluation, achieving high measurement precision through software processing rather than hardware addition
Data Source
AI summary
A path risk evaluating apparatus includes a secondary collision likelihood direction evaluating unit (108) and a secondary collision likelihood distance evaluating unit (109) which evaluate, based on the relationship between a movement path and a position of objects in an environment where a mobile device moves, the likelihood of the mobile device having primary collision with a first object and the first object further having secondary collision with a second object; a risky attribute combination evaluating unit (112) which determines degree of damage when secondary collision occurs, by referring to information, indicating degree of damage when objects in the environment collide, held by a risky attribute combination information holding unit (111); and a path evaluating unit (113) which evaluates the risk of the moving path for the mobile device, based on the evaluation result from the secondary collision likelihood direction evaluating unit (108) and the secondary collision likelihood distance evaluating unit (109) and the degree of damage determined by the risky attribute combination evaluating unit (112).