Magnetic Trigger RFID Asset Locator for Data Center Tracking
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Solution Overview
Problem
Existing devices for sampling and locating asset information in data centers face challenges such as inaccurate and non-real-time location determination, electromagnetic interference, high installation and maintenance costs, and complex processes due to strong electromagnetic shielding by metal racks and servers, leading to inefficient and unreliable operations.
Innovation Solution
A device comprising a tag with a magnetic element and a locator that uses a hall switch and microprocessor to trigger an RFID reader only when necessary, reducing electromagnetic interference and enabling precise, automatic, and real-time asset tracking with a simple and cost-effective installation process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the RFID reader continuously emits electromagnetic wave to detect RFID responders, then the asset information can be sampled, but electromagnetic interference is caused to the operation of the server
Solution Approach 1:
The RFID reader operates periodically rather than continuously, activating only when the hall switch detects the magnetic element's approach. This periodic operation reduces electromagnetic interference to servers while maintaining asset information sampling capability, directly resolving the contradiction between productivity and harmful electromagnetic emissions.
2Loss of information
If the RFID reader is installed inside the cabinet to detect RFID responders, then the asset information can be obtained, but the location of the RFID responder cannot be accurately determined
Solution Approach 1:
The magnetic element serves as an intermediary that carries position information. When it approaches the hall switch, it triggers the RFID reader activation. The hall switch's fixed position combined with the magnetic element's movement provides location information, while the RFID reader obtains asset information, thus resolving the contradiction between information acquisition and location precision.
3Reliability
If professional engineers design and construct a specific project solution for each rack, then the asset management can be implemented, but the installation and maintenance cost increases
Solution Approach 1:
The locator device is designed as a universal, standardized component that can be applied to any rack without custom engineering. The modular design with standardized mounting brackets and components enables plug-and-play installation, eliminating the need for professional engineers to design custom solutions for each rack, thus reducing installation and maintenance costs while maintaining reliability.
4Loss of information
If the RFID reader is used in the data center with metal racks and servers, then the asset information can be read, but the metal racks and servers cause electromagnetic field shielding that affects the RFID operation
Solution Approach 1:
The RFID reading function is extracted from continuous operation and activated only when needed (when magnetic element triggers hall switch). This extraction reduces the time RFID electromagnetic waves are active, minimizing interference with metal racks and servers, while still enabling asset information reading when required.
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
The solution provides accurate and real-time asset location tracking, reduces electromagnetic interference, and lowers installation and maintenance costs by using magnetic elements for stable RFID reader connection and minimizing energy consumption, thus enhancing operational efficiency and reducing labor costs.
Implementation Method 1
the hall switch and the RFID reader are electronically connected to the microprocessor respectively... When a distance between the attaching terminal of the tag and the attached element of the locator reaches a preset distance, the magnetic element on the attaching terminal triggers the hall switch to send a trigger signal to the microprocessor
Implementation Method 2
the RFID reader installed inside the cabinet continuously emits electromagnetic wave to detect if there are RFID responders in the area... the RFID reader is electronically connected to the multiplexer, and the multiplexer is connected to a plurality of RFID antennas
Data Source
AI summary
A device for sampling and locating asset information includes a tag and a locator. The tag includes an attaching terminal that comprises an attaching element, a RFID responder, a magnetic element. The tag further includes a fixing end and a flexible connection element. The locator includes an attached element, a RFID reader, a hall switch, a multiplexer and a microprocessor. When a distance between the attaching terminal and the attached element reaches a preset distance, the magnetic element triggers the hall switch to send a trigger signal to the microprocessor. Based on the trigger signal the microprocessor turns on the RFID reader and controls the multiplexer to be connected to the corresponding RFID antenna to read the information. By using the device above, a real time monitoring and an automatic location are realized and the monitoring and the location can be accurate to every unit on the rack.