Automated Wireless Earpiece PCB Testing via Custom Jigs
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Solution Overview
Problem
The challenge in manufacturing wireless devices, particularly wireless earpieces, is the space constraint that limits the number of test points on printed circuit boards (PCBs), making testing difficult and leading to increased time, equipment requirements, failed devices, and additional expenses due to potential defects.
Innovation Solution
A system and method involving automated testing using a processor and memory with instructions to test semi-assembled wireless earpieces, including end-of-line functional testing and final acoustic testing, utilizing a computing device connected to the earpiece and custom jigs to interface with PCBs, allowing for efficient identification and removal of defective components early in the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automated testing is implemented with custom jigs to interface with PCBs, then testing efficiency and defect detection improve, but device complexity and manufacturing cost increase
Solution Approach 1:
Custom test jigs serve as intermediary devices that interface between the automated testing system and the PCB test points. These jigs contain integrated circuits that can be connected to multiple test points simultaneously, enabling efficient automated testing without requiring complex direct connections from the testing equipment to each individual test point on the PCB.
Solution Approach 2:
The testing system is divided into modular components including separate test jigs for different PCB boards, individual test modules for various functions (acoustic, functional, serial programming), and distributed test points on the PCBs. This segmentation allows each component to be optimized independently and facilitates easier maintenance and scalability of the testing system.
2Reliability
If multiple test points are added to PCBs for comprehensive testing, then testing coverage improves, but space constraints and manufacturing difficulty worsen
Solution Approach 1:
Test points and test circuits are nested within the existing PCB layout and component structure. The custom test jigs contain integrated circuits that are inserted into socket locations on the PCB, allowing test functionality to be nested within the device structure without requiring separate external testing equipment or additional external connections.
Solution Approach 2:
The test jigs are designed with universal interfaces that can accommodate multiple different PCB configurations and test scenarios. A single jig design can be adapted to test various functions including acoustic performance, functional operations, and serial programming across different device models, reducing the need for dedicated test points for each specific test type.
3Device complexity
If manual testing procedures are used, then equipment requirements are reduced, but time consumption and labor costs increase
Solution Approach 1:
The automated testing system performs self-diagnosis and self-testing through the custom jigs that can autonomously execute test sequences without requiring constant manual intervention. The system automatically detects test point connections, executes appropriate test routines, and generates test results, enabling the testing process to serve itself with minimal human involvement.
Solution Approach 2:
Manual mechanical testing operations are replaced with automated electronic testing systems that use computer-controlled signal generation and measurement. The custom jigs incorporate electronic circuits that automatically perform measurements and comparisons, replacing manual mechanical probing and visual inspection with automated electronic detection and analysis.
Data Source
AI summary
A system and method for testing a wireless earpiece which provides improved efficiencies in manufacturing. Automated testing of one or more printed circuit boards of the wireless earpiece is initiated. The semi-assembled wireless earpiece is tested. End-of-line functional testing is performed. Final acoustic testing of the wireless earpiece is performed.