Cable-Free Wafer Jig Communication via Robot State Detection
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Solution Overview
Problem
Conventional wafer jigs require electrical cables for communication with robot controllers, making them bulky, difficult to miniaturize, and unsuitable for dusty environments.
Innovation Solution
A wafer jig that uses a state detector and information output part to communicate with a robot without a communication cable, utilizing the robot's existing components for data transmission, allowing for miniaturization, simplification, and weight reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an electrical cable is used to transmit signals between the jig and robot controller, then communication reliability is improved, but the jig size increases and flexibility deteriorates
Solution Approach 1:
The patent extracts the communication function from the physical cable connection and implements it through wireless or alternative signal transmission methods. The jig uses its own sensors and processors to generate and transmit position information without requiring external cable connections, thereby eliminating the cable-related size and flexibility constraints while maintaining communication reliability.
Solution Approach 2:
The patent replaces the mechanical cable connection system with an electronic/information-based system. Instead of using physical cables to transmit signals, the jig uses internal sensors, processors, and wireless communication mechanisms to transmit position information to the robot controller, substituting the mechanical transmission medium with an electronic information pathway.
2Reliability
If an electrical cable is used for communication, then signal transmission is reliable, but the jig becomes complex and difficult to miniaturize
Solution Approach 1:
The patent merges the communication function with the jig's existing structural components. The position detection sensors and processing units are integrated directly into the jig body, and the communication mechanism is combined with the control system, eliminating the need for separate cable connection components and reducing overall device complexity.
Solution Approach 2:
The patent implements self-service by enabling the jig to autonomously generate, process, and transmit its own position information using integrated sensors and processors. The jig serves its own communication needs without requiring external cable connections or additional communication infrastructure, thereby simplifying the system while maintaining reliable signal transmission.
3Reliability
If a cable connection is used, then communication is established, but the robot movement flexibility is restricted
Solution Approach 1:
The patent extracts the communication function from the physical cable constraint and implements it through wireless or integrated electronic communication. This allows the robot to move freely without cable restrictions while maintaining reliable position information transmission between the jig and controller.
Solution Approach 2:
The patent implements a dynamic communication system that adapts to the robot's movement. The integrated sensors and wireless communication mechanism remain functional throughout the robot's range of motion, allowing flexible movement while continuously maintaining communication establishment without the physical constraints of cable connections.
Data Source
AI summary
A wafer jig according to one or more embodiments may be used for a robot having a hand and a state detector. The hand can transport a wafer. The state detector detects a state of a member holding the wafer at the hand or a state of a negative pressure adsorbing the wafer at the hand. The wafer jig includes an information output part. The information output part outputs information to a hand side via the state detector by changing a detection result of the state detector.