RFID Filter Housing Linking for Emissions Test Accuracy
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Solution Overview
Problem
Inaccurate emissions test results due to improper assignment of filter media to phases in emissions measurement tests, leading to potential engine certification failures, as existing methods lack effective identification and linking mechanisms for filter media and test fixtures.
Innovation Solution
An emissions test apparatus with RFID tags and bar codes for identifying and linking filter housings, filter media, and test fixtures, ensuring accurate attribution of particulate matter to specific phases through a controller that reads and correlates the codes for precise data recording and analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If filter media are manually assigned to phases during emissions testing, then the process is simple to operate, but the accuracy and reliability of test results deteriorate due to potential misassignment
Solution Approach 1:
The patent replaces manual mechanical assignment of filter media to phases with an automated optical identification system using bar codes and RFID tags. The controller automatically reads these identifiers and links filter media to corresponding phases, eliminating human error in manual assignment while maintaining operational simplicity through automated processes.
Solution Approach 2:
The patent uses bar code identifiers as informational copies of filter media identity and phase assignment data. Instead of physically marking or labeling each filter, the system creates and reads digital copies of identification information through bar codes and RFID tags, enabling accurate tracking without adding physical complexity to the filter media themselves.
2Reliability
If bar code identification systems are implemented for filter media, then the reliability of phase assignment improves, but the device complexity and cost increase
Solution Approach 1:
The patent implements a universal identification system where bar codes and RFID tags serve multiple functions: identifying the filter media, tracking phase assignment, and enabling automated data recording. This multi-functional approach consolidates what would otherwise require separate systems for identification, tracking, and data management into a single integrated solution.
Solution Approach 2:
The system enables self-service operation where the bar code reader and controller automatically perform phase assignment and data linking without requiring manual intervention. The identification system serves itself by automatically reading bar codes, storing identifiers in memory, and correlating filter media with phases, reducing the need for operator training and minimizing human error.
3Productivity
If automated bar code reading and linking is implemented, then productivity and test throughput improve, but the initial setup cost and system complexity increase
Solution Approach 1:
The patent implements preliminary action by pre-assigning unique bar code identifiers to each filter medium before the emissions test begins. The controller pre-configures the memory storage structure to accommodate these identifiers and pre-establishes the linking mechanism between filters and phases. This preliminary setup enables rapid automated processing during the actual test without requiring complex real-time decision-making.
Data Source
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AI summary
An emissions test apparatus is provided and may include a filter housing having at least one of a first RFID tag and a first bar code identifying the filter housing. A filter media may be selectively disposed within the filter housing and may include at least one of a second RFID tag and a second bar code identifying the filter media. A controller may link the filter housing and the filter media when the filter media is disposed within the filter housing based on information provided by the at least one of the first RFID tag and the first bar code and the at least one of the second RFID tag and the second bar code.