Robot Control System Position Verification
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Solution Overview
Problem
Existing robot control systems may perform incorrect compensation due to external attacks, setting errors, or software malfunctions, potentially harming individuals or devices during task execution.
Innovation Solution
A control system that includes an imaging device, a position conversion unit, an operation control unit, a detection range calculation unit, and a position determination unit to verify if the detected object position or compensation amount is within a valid range, with notification and stop control units to prevent incorrect operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the robot performs operation based on detected position without verification, then the operation speed and productivity are improved, but the reliability and safety deteriorate due to potential incorrect detection
Solution Approach 1:
The patent applies preliminary action by calculating the detection range and verifying whether the detected object position falls within this range before the robot executes the operation. The position determination unit performs this verification in advance, preventing incorrect operations while maintaining efficient execution. This resolves the contradiction by adding a preliminary safety check that does not significantly impact overall productivity.
2Reliability
If the detection range verification is added to the control system, then the reliability and safety are improved, but the device complexity increases
Solution Approach 1:
The patent applies universality by integrating the detection range calculation and position verification functions into the existing controller that already manages the robot and imaging device. The controller performs multiple functions: controlling the imaging device, converting positions between coordinate systems, calculating detection ranges, and determining whether detected positions are valid. This multi-functional approach improves reliability without requiring separate dedicated hardware components, thus minimizing the increase in device complexity.
3Object-affected harmful factors
If the position verification process is implemented, then the harmful factors are reduced, but the operation time increases
Solution Approach 1:
The patent applies partial action by implementing a focused verification process that checks only the critical aspect: whether the detected position falls within the predetermined detection range. Rather than performing comprehensive validation of all possible error conditions, the system performs this single essential check efficiently. This partial verification approach significantly reduces harmful factors while minimizing the additional time required, as the verification can be performed quickly using pre-calculated detection range data.
Data Source
AI summary
A control system includes an imaging device and a controller. The controller includes a position conversion unit that detects an object from an image imaged by the imaging device and converts a detection position of the detected object on an image coordinate system or a sensor coordinate system into a detection position of the object on a machine coordinate system, an operation control unit that controls the operation of a machine based on the detection position of the object on the machine coordinate system, a detection range calculation unit that calculates a detection range on the machine coordinate system based on a predetermined detection range in the image on the image coordinate system or the sensor coordinate system, and a position determination unit that determines whether the detection position of the object on the machine coordinate system is within the detection range on the machine coordinate system.