Configurable PCI Dummy Card Thermal Simulation

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Solution Overview

Problem

The lack of industry standards for chipset size and location on PCI cards leads to varying heat generation profiles, impacting thermal performance downstream in server systems, and existing PCI dummy cards are inflexible, limiting thermal testing capabilities.

Innovation Solution

A configurable PCI dummy card design that mimics different chipset layouts and heat sink configurations, using electrical resistance wires to simulate various power and heat profiles, allowing for flexible dimension and location representation and heat dissipation testing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple fixed-geometry PCI dummy cards are manufactured to test different chipset configurations, then thermal testing coverage is improved, but device complexity and manufacturing cost increase

Engineering Contradiction:

Improvethermal testing coverageVSAvoidnumber of dummy cards required

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The PCI dummy card incorporates multiple heater elements that can be independently controlled to simulate different chipset heat generation profiles. A single dummy card can replace multiple fixed-geometry dummy cards by configuring the heater elements to match various chipset thermal characteristics, thereby achieving universal thermal testing capability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The dummy card uses controllable heater elements with adjustable power levels that can dynamically change heat generation to match different chipset configurations. This dynamic control allows the same physical dummy card to adapt its thermal output to simulate various chipset layouts and power consumption scenarios.

Inventive Principle:

Principle #15Dynamics

2Manufacturing precision

If PCI dummy cards are designed with fixed geometries for specific chipset configurations, then manufacturing precision is improved, but adaptability to different chipset layouts deteriorates

Engineering Contradiction:

Improvechipset location and dimension accuracyVSAvoidconfiguration flexibility

Core Design Contradiction:

Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The dummy card divides the heating function into multiple independent heater elements positioned at different locations. Each heater element can be independently controlled to simulate heat generation from different chipset components, allowing precise thermal simulation without requiring multiple fixed-geometry dummy cards.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The dummy card changes thermal parameters (heat generation levels, distribution patterns) by controlling the power supplied to different heater elements. This allows the same physical structure to simulate various chipset configurations by adjusting thermal parameters rather than changing physical geometries.

Inventive Principle:

Principle #35Parameter changes

3Power

If upstream PCI cards generate varying power levels, then functionality is improved, but thermal influence on downstream components worsens

Engineering Contradiction:

ImprovePCI card power generationVSAvoidthermal impact on downstream components

Core Design Contradiction:

PowerVSObject-affected harmful factors

Solution Approach 1:

The thermal testing system uses temperature sensors to monitor downstream component temperatures and feeds this information back to control the heater element power levels. This feedback mechanism allows accurate simulation of thermal impacts from different PCI card power configurations while maintaining control over the thermal environment.

Inventive Principle:

Principle #23Feedback

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

Enables comprehensive thermal testing and design validation for PCI cards by simulating diverse heat generation scenarios with a single card, improving thermal management and reducing the need for multiple dummy cards.

Implementation Method 1

using electrical resistance wires to simulate various power and heat profiles

Methodology Applied

Scientific EffectJoule heating: Joule Heating

Implementation Method 2

heat sink configurations, using electrical resistance wires to simulate various power and heat profiles

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 3

heat dissipation testing

Methodology Applied

Scientific EffectConvection: Convection

Data Source

PatentUS11416429B1Multi-functional PCI dummy card design

Publication Date: 2022.08.16 AMD DESIGN LLC

AI summary

A configurable PCI card for connecting to a PCI interface is disclosed. The configurable PCI card comprises a bus interface disposed on a base card for communicatively connecting to a bus of a computing device. The configurable PCI card further comprises a bracket for physically securing the base card to the computing device. The configurable PCI card also comprises a wire layout disposed on the base card for replicating a plurality of different power and heat generation profiles that correspond to a plurality of different chipsets.