Board Insertion Detection Circuit for Safe Server Power Enable

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Solution Overview

Problem

Server systems face failures or board burnout due to mismatched board types and insertion issues, leading to incorrect power supply and potential damage.

Innovation Solution

A board mis-insertion prevention circuit with detection circuits and a control module that verifies the type and stability of board insertion, controlling the power supply accordingly to prevent incorrect connections and ensure safe operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If boards are connected to connectors without type verification, then the connection process is simple and fast, but server system failure or board burnout may occur

Engineering Contradiction:

Improveserver system reliabilityVSAvoidconnection verification complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements preliminary detection of board types through detection circuits before power is supplied to the board. The detection circuit identifies the board type by detecting electrical characteristics during the insertion process, and only after verification that the board type matches the connector type does the system enable power supply. This preliminary verification action prevents mismatches before they can cause damage.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces a detection circuit as an intermediary component between the connector and the board. This detection circuit acts as a mediator that verifies board type compatibility before allowing the board to receive power. The intermediary detection mechanism ensures that only compatible boards are connected without requiring complex system-level verification.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If power is supplied immediately upon board insertion, then the system responds quickly, but incorrect boards may receive power causing burnout

Engineering Contradiction:

Improveboard protectionVSAvoidpower supply delay

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary detection of board type and stability before enabling power supply. The detection circuit checks electrical characteristics during the insertion process, and only after confirming proper board type and stable connection does the system activate power supply. This preliminary verification prevents incorrect boards from receiving power while minimizing the delay through efficient detection.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The detection circuit is designed to rapidly perform type verification by detecting key electrical characteristics during the insertion process. The system skips unnecessary verification steps and focuses on critical detection parameters, allowing quick identification of board type and connection stability, thus minimizing power supply delay while ensuring safety.

Inventive Principle:

Principle #21Skipping (Rushing through)

3Reliability

If detection circuits verify board type and stability, then incorrect connections are prevented, but the device complexity increases

Engineering Contradiction:

Improveconnection accuracyVSAvoidcircuit complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The detection circuit automatically performs board type verification and connection stability detection without requiring external intervention or complex control systems. The circuit self-activates upon board insertion, performs detection, and controls power supply based on detection results, reducing the need for additional control circuitry and simplifying the overall system.

Inventive Principle:

Principle #25Self-service

4Reliability

If the system detects board insertion stability, then unstable connections are identified, but the detection process becomes more complex

Engineering Contradiction:

Improveconnection stabilityVSAvoidstability detection difficulty

Core Design Contradiction:

ReliabilityVSDifficulty of detecting and measuring

Solution Approach 1:

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces complex mechanical or manual stability verification methods with electrical detection. The detection circuit uses electrical signal analysis to determine connection stability, substituting simpler electrical measurement for more complex mechanical or procedural verification, thereby reducing detection difficulty while improving reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS20230299545A1Circuit preventing supply of power to board incorrectly or unstably installed, method, and server system

Publication Date: 2023.09.21 SHENZHEN FULIAN FUGUI PRECISION INDUSTRY CO LTD

AI summary

A board mis-insertion prevention circuit includes a first detection circuit, a second detection circuit, and a control module. The first detection circuit detects whether a board is in a first state and outputs a first detection signal when the board is in the first state. The second detection circuit detects whether the board is in a second state when the board is not in the first state, and outputs a second detection signal when the board is in the second state. The control module receives the first detection signal or the second detection signal and can allow or disconnect a power supply to the board according to the first detection signal or the second detection signal.