Robot Payload Identification via Change Position Monitoring
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Solution Overview
Problem
Existing robot monitoring systems require multiple tool sensors, increasing complexity and the probability of failure, as they need to identify and track each tool's position and contour to prevent collisions, which is inefficient and prone to errors.
Innovation Solution
A method where robots move to predetermined changing positions to identify payloads, reducing the need for multiple sensors by using the robot's current position relative to these positions to determine payload identification, potentially using only one non-secure sensor for reliable payload recognition, and ensuring accurate collision monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If special tool sensors are used for each tool to identify the payload, then reliable payload identification is achieved, but the device complexity and the number of sensors increase
Solution Approach 1:
The patent applies universality by using a single sensor system that serves multiple functions: it detects both the robot's position and infers payload information. Instead of having dedicated sensors for each tool, one sensor system monitors the robot assembly's position changes to identify payload characteristics, making the sensor system multi-functional and reducing overall system complexity.
Solution Approach 2:
The patent uses the robot assembly's position as an intermediary to indirectly identify the payload. Rather than directly sensing the payload with dedicated sensors, the system measures the robot assembly's position changes during tool changes and uses this positional information as a mediator to infer which payload is attached, eliminating the need for direct payload sensors.
2Measurement precision
If multiple tool sensors are used to track each tool's position and contour, then collision monitoring accuracy is improved, but the probability of failure and maintenance effort increase
Solution Approach 1:
The patent merges the functions of multiple tool sensors into a single sensor system. By combining position detection and payload identification into one sensor system that monitors the robot assembly's position, the patent reduces the number of independent components, thereby lowering the overall failure probability while maintaining collision monitoring accuracy through intelligent position-based inference.
3Reliability
If a sensor is provided for each payload, then reliable collision monitoring is achieved, but the effort and cost of the monitoring system increase
Solution Approach 1:
The patent applies self-service by enabling the robot assembly to provide its own identification information through its position data. The sensor system does not need to actively query or identify each payload separately; instead, the robot assembly's position changes during tool changes automatically provide the necessary information for payload identification and collision monitoring, reducing system complexity and effort.
Data Source
Figure 1~2
AI summary
According to a method according to the invention for monitoring a payload-carrying robot arrangement with at least one robot (1), a robot-guided payload arrangement (N) is identified on the basis of a current position (TCP) of the robot arrangement relative to a predetermined change position (P1, P2, P3) of the robot arrangement (S30, S40).