Test Equipment Thermal Diagnostics via Bit Pattern Analysis
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Solution Overview
Problem
Conventional test equipment diagnostics struggle to effectively evaluate the thermal solutions and identify defects in cooling components, particularly in measuring FPGA thermal characteristics, due to inefficiencies in traditional approaches that rely on standard protocol bits and maximum load injection.
Innovation Solution
A diagnostic method involving the application of known bit patterns with specific thermal loads to test equipment components, measuring temperatures, and performing a temperature control analysis to validate the effectiveness of temperature control components by comparing measured and expected temperature deltas within acceptable tolerances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional maximum load injection is used to measure FPGA thermal characteristics, then thermal performance can be evaluated, but the process becomes inefficient and cannot operate during normal test operations
Solution Approach 1:
The patent pre-calculates and stores expected temperature values for various bit patterns before actual testing. This preliminary action allows the system to compare measured temperatures against pre-computed references during normal operations, eliminating the need for disruptive maximum load injection while maintaining measurement accuracy
Solution Approach 2:
The system uses the FPGA's own operational bit patterns during normal test operations to generate heat and measure temperature, rather than requiring external maximum load injection. The FPGA serves itself as both the test object and the heat source, enabling continuous monitoring without disrupting productivity
2Ease of operation
If standard protocol bits are used for temperature measurement, then the process is simple, but thermal characteristics cannot be accurately determined
Solution Approach 1:
The patent changes the operational parameters by using specific known bit patterns with predictable thermal characteristics instead of standard protocol bits. These specially selected bit patterns create measurable temperature changes that reveal thermal characteristics, while the system maintains operational simplicity through automated comparison against pre-computed expected values
3Reliability
If conventional maintenance and diagnostics are used for test equipment, then standard issues can be addressed, but all test equipment issues including thermal defects cannot be resolved
Solution Approach 1:
The patent creates a multi-functional diagnostic system that can perform both traditional equipment diagnostics and specialized thermal characterization using the same hardware infrastructure. The temperature sensing and bit pattern control capabilities are integrated into the existing test equipment, allowing a single system to address multiple types of issues from basic operational checks to detailed thermal analysis
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 enables efficient and effective temperature diagnostics for test equipment, allowing for the detection of errors in temperature control systems and evaluation of thermal solution effectiveness, improving the accuracy of thermal management in test environments.
Implementation Method 1
The first bit pattern has a known/expected thermal load and corresponding first known/expected temperature
Implementation Method 2
performing a test equipment temperature control analysis based upon the results of applying the known/expected first bit pattern and known/expected second bit pattern
Data Source
AI summary
Presented embodiments facilitate efficient and effective diagnostic of test system operations, including temperature control of test equipment components. In one embodiment a test equipment diagnostic method includes applying a known/expected first bit pattern to a test equipment component, applying a known/expected second bit pattern to a test equipment component, and performing a test equipment temperature control analysis based upon the results of applying the known/expected first bit pattern and known/expected second bit pattern. The first bit pattern and second bit pattern have known/expected respective thermal loads and corresponding respective first known/expected/expected temperature and second known/expected/expected temperature. In one embodiment, performing a test equipment temperature control analysis includes determining if temperature control components control a temperature of the test equipment component within acceptable tolerances. In one exemplary implementation, the test equipment component is a test control component (e.g., a field programmable gate array (FPGA), etc.).