Boundary Scan Controller Verification Board for Pre-Shipment Testing
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Solution Overview
Problem
Conventional function verification methods for boundary scan test controllers are inadequate for confirming all resources are functional in the same environment, lack convenient hardware tools for pre-shipment verification, and result in low maintenance efficiency due to the need for on-site replacement and testing.
Innovation Solution
A function verification system and method using a test board with input/output connectors matching the boundary scan test controller's connectors, connected via a USB port to a test control host, which executes a test program to generate a report determining if the controller meets shipment or production requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional function verification method directly connects boundary scan test controller to hardware platform, then resources of boundary scan controller can be verified, but it is hard to confirm whether all resources are good in the same environment
Solution Approach 1:
The patent introduces a dedicated verification board as an intermediary device between the boundary scan test controller and the test environment. This verification board contains all necessary connector types and configurations, serving as a mediator that allows comprehensive verification of the test controller without requiring the actual production hardware platform. The intermediary board isolates the verification process from environmental variations while maintaining accurate resource testing.
2Reliability
If boundary scan test controller is verified before shipment using conventional methods, then functional status can be checked, but there is lack of convenient hardware tool
Solution Approach 1:
The patent extracts the verification functionality from the complex production hardware platform and consolidates it into a dedicated, portable verification board. This extracted verification tool contains only the essential connectors and test interfaces needed for boundary scan controller verification, making it a convenient standalone hardware tool that can be easily used for pre-shipment checks without requiring the full production environment.
3Reliability
If defective boundary scan test controller is replaced on-site during maintenance, then working status can be confirmed, but maintenance efficiency is low due to detaching and replacing
Solution Approach 1:
The patent enables preliminary verification of boundary scan test controllers using the portable verification board before they are installed in production equipment. By performing verification in advance at the controller level rather than after installation, defective units can be identified and replaced before causing production issues, significantly reducing on-site maintenance operations and improving overall maintenance efficiency.
Data Source
AI summary
A function verification method for a boundary scan test controller is disclosed. In the method, the configuration positions of input/output connectors on a test board correspond to configuration positions of to-be-verified connectors on a boundary scan test controller, so that when the test board is stacked and positioned on the boundary scan test controller, the input/output connectors can be electrically connected to the to-be-verified connectors corresponding thereto, respectively. After being electrically connected to the boundary scan test controller via a USB port, the test control host creates a test script according to information of the test board and all operations of the to-be-verified connectors, and then execute a test program in the to-be-verified connectors according to the test script, and generates a test report, and determines whether the boundary scan test controller meets shipment or production requirement according to the test report.