Wireless Tag Testing Assembly Line with Silent Mode Trigger
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Solution Overview
Problem
Current wireless tag testing methods are time-consuming, requiring individual testing of each tag, which involves charging and full functionality testing, often necessitating a start and stop process, and are not efficient for tags that need to communicate on multiple frequencies before conversion.
Innovation Solution
A method and system that employ an assembly line approach using a testing mode to speed up the testing process, where wireless tags are placed into a silent mode with a specific sequence of signals, allowing them to be charged and calibrated in one area and then tested in another, using a trigger signal to determine their functionality without interfering with subsequent tags.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If full functionality testing is performed on each wireless tag individually, then testing accuracy is improved, but testing time increases significantly
Solution Approach 1:
The system performs preliminary charging of wireless tags using a far field antenna before the tags enter the testing area. This preliminary action ensures tags are powered and ready for quick testing without requiring time-consuming charging during the testing process itself, thereby reducing total testing time while maintaining accuracy.
Solution Approach 2:
The testing system is divided into distinct functional zones: a charging area with far field antennas and a testing area with near field antennas. This segmentation allows different operations (charging and testing) to occur simultaneously in different locations, eliminating sequential delays and reducing overall testing time.
2Reliability
If wireless tags are charged and tested sequentially one at a time, then testing thoroughness is improved, but productivity decreases
Solution Approach 1:
The system enables continuous testing by implementing an assembly line approach where wireless tags are constantly moving through different zones. While one tag is being tested in the testing area, another tag is being charged in the charging area, eliminating idle time and maintaining continuous productive action throughout the system.
Solution Approach 2:
A conveyor system acts as an intermediary mechanism that transports wireless tags between the charging area and testing area. This intermediary enables smooth, continuous flow of tags through the testing process, allowing multiple tags to be processed in sequence without interruption and significantly increasing throughput.
3Measurement precision
If start and stop processes are implemented for conveyance, then testing precision is improved, but time efficiency worsens
Solution Approach 1:
Wireless tags are preliminarily charged and prepared in the charging area before reaching the testing area. This preliminary preparation ensures that when tags enter the testing zone, they are already powered and ready for immediate testing, eliminating the need to stop the conveyor for charging operations and maintaining continuous motion.
Solution Approach 2:
The system transitions from static, stop-start testing to a dynamic continuous flow system. The conveyor maintains constant motion while tags are processed, and testing operations are synchronized with the moving tags rather than requiring the tags to be stationary, thereby eliminating conveyance delays.
4Adaptability or versatility
If multiple frequencies are tested after conversion, then frequency coverage is improved, but testing time increases
Solution Approach 1:
The system performs preliminary multi-frequency testing on wireless tags before the conversion process. By testing tags at multiple frequencies in advance, the system verifies frequency capabilities early in the production flow, eliminating the need for repeated post-conversion frequency testing and reducing total testing time while maintaining comprehensive frequency coverage.
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
This approach significantly reduces the testing time for wireless tags, allowing them to be tested before conversion with confidence in their post-conversion functionality, and enables nearly continuous testing without the need for extensive shielding, improving efficiency and speed.
Implementation Method 1
transmitting, by a first antenna of the testing unit, a prescribed pattern that is recognizable by a wireless tag to put the wireless tag into a testing mode
Implementation Method 2
transmitting a trigger signal to a wireless tag from a second antenna of the testing unit
Implementation Method 3
Some wireless tags may be designed to harvest electromagnetic energy at one or more frequencies to provide power for their operations
Data Source
AI summary
A method for testing a wireless tag by a testing unit. The method comprises: transmitting, by a first antenna, a prescribed pattern that is recognizable by a tag to put the tag into a testing mode; transmitting a trigger signal to a tag from a second antenna, the trigger signal being adapted to cause a tag to at least respond with a prescribed signal when the tag is good; waiting up to a prescribed amount of time after transmission of the trigger signal for a response to the trigger signal from a tag that is within range of the second antenna; when a valid response is received from the tag within the prescribed amount of time, designating the tag as having passed the test; and when a valid response is not received from the tag within the prescribed amount of time, designating the tag as having failed the test.