Wireless Charging Sensor Unit for Carrier Pollution Monitoring
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Solution Overview
Problem
In automated material handling systems for semiconductor and LCD substrate processing, existing battery-powered sensor systems for monitoring carrier pollution are inefficient, requiring manual battery replacement and maintenance, which is time-consuming and costly, especially in large-scale semiconductor factories.
Innovation Solution
An automated material handling system with a wireless charging mechanism for sensor units, utilizing RFID communication and smart sensors to detect and manage carrier pollution in real-time, allowing for continuous operation and minimizing space within the carrier while enabling multiple sensor installations without limiting storage capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If battery-powered sensors are installed inside the carrier to monitor pollution, then real-time pollution monitoring is enabled, but manual battery replacement and maintenance become time-consuming and costly
Solution Approach 1:
The patent extracts the power supply function from the carrier's internal battery system and relocates it to an external wireless charging system. The sensor unit remains inside the carrier for continuous monitoring, but its power source is replaced with a wireless charging coil that receives power externally, eliminating the need for manual battery replacement while maintaining measurement precision.
Solution Approach 2:
The patent replaces the mechanical battery replacement system with a wireless electromagnetic charging system. Instead of physically opening the carrier to replace batteries, the system uses electromagnetic induction between the carrier's charging coil and the base station's charging coil to transfer power wirelessly, eliminating manual intervention and reducing maintenance time.
2Measurement precision
If multiple sensors are installed in the carrier to comprehensively monitor pollution, then monitoring coverage is improved, but the carrier's storage capacity is reduced
Solution Approach 1:
The patent uses thin-film technology for the sensor unit design, integrating multiple sensing elements into a compact, flat structure that occupies minimal space within the carrier. This allows comprehensive pollution monitoring with multiple sensors while preserving the carrier's storage capacity for wafers.
Solution Approach 2:
The patent combines multiple sensing functions (temperature, humidity, particle detection) into a single integrated sensor unit that communicates with the base station. This consolidation allows comprehensive monitoring coverage while minimizing the space occupied by the sensing system within the carrier.
3Loss of information
If sensors are continuously operated to monitor carrier conditions, then real-time data is obtained, but power consumption increases
Solution Approach 1:
The patent implements periodic measurement and communication cycles where sensors take measurements at intervals and transmit data to the base station only when needed. The system activates sensors and communication modules based on carrier state changes or scheduled intervals, reducing continuous power consumption while maintaining accurate real-time monitoring capability.
Solution Approach 2:
The system automatically activates sensors and communication functions based on detected carrier conditions, such as when the carrier is loaded, transported, or docked at the base station. This self-service approach ensures monitoring accuracy is maintained during critical phases while minimizing power consumption during idle or low-risk periods.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables real-time monitoring and management of carrier pollution, maintaining a clean environment, improving production efficiency by eliminating the need for manual battery replacement and reducing operational costs through wireless power supply and efficient data communication.
Implementation Method 1
a wireless charging module to supply power for the sensor unit
Implementation Method 2
RFID communication and smart sensors to detect and manage carrier pollution
Data Source
AI summary
An automated material handling system includes: at least one state detecting sensor disposed inside or outside the carrier to detect an internal state of the carrier including a degree of pollution in the carrier; a carrier interface to transmit a carrier state value; a carrier controller including a controller interface disposed on the plate to obtain a carrier state value by communicating with the carrier interface, and a carrier control unit configured to generate carrier management information including the carrier state value obtained through the controller interface and current location information of the carrier and output the carrier management information to a server; and a server configured to analyze an internal pollution state of the carrier based on the carrier management information provided by the carrier controller.