Server Card Connector Monitoring Using Cable Thermistors
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Solution Overview
Problem
Existing server card systems face issues with inaccurate and delayed detection of abnormal conditions at plug connectors due to distance and space limitations, leading to potential dangers such as poor contact, excessive resistance, and thermal issues.
Innovation Solution
Incorporation of thermistors and a voltage dividing resistor in the cable connecting the main board and card, with a BMC acquiring electrical parameters to determine the state of plug connectors, enabling rapid and accurate detection of abnormalities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a temperature sensor near the card socket is used to detect the temperature of the connector, then the temperature can be monitored, but the sensor cannot accurately and timely sense the state change of the connector due to distance and space limitations
Solution Approach 1:
The patent introduces a thermistor as an intermediary sensing element placed directly at the connector position, which mediates between the connector's thermal state and the BMC's detection capability. This thermistor provides real-time temperature feedback without the distance and space limitations of external sensors, enabling both accurate and timely detection of connector state changes.
Solution Approach 2:
The patent places the thermistor in advance at the connector position before abnormal conditions occur, enabling proactive monitoring of temperature changes. This preliminary positioning allows the system to detect potential issues before they escalate into failures, improving both detection accuracy and response time.
2Reliability
If a card chip is used to monitor the temperature, then temperature monitoring is achieved, but the card chip cannot timely handle abnormal conditions
Solution Approach 1:
The patent implements a feedback mechanism where the thermistor continuously monitors connector temperature and transmits real-time data to the BMC. This closed-loop feedback system enables the BMC to immediately detect abnormal temperature conditions and respond promptly, significantly improving the response speed compared to card chip monitoring.
3Adaptability or versatility
If cable connection is used among different cards, then connectivity is achieved, but there are potential dangers such as poor contact, excessive contact resistance and even short circuit and open circuit due to plug and pull wear, plug and pull not in place, foreign matter, plug deformation and aging
Solution Approach 1:
The patent performs preliminary detection of connector contact quality by measuring resistance through the thermistor and voltage dividing resistor circuit before abnormal conditions develop. This early detection capability allows the system to identify and address potential connection issues before they lead to failures, improving overall connection reliability.
4Device complexity
If no detection mechanism is placed directly at the connector, then device complexity is reduced, but the efficiency and accuracy of detecting plug connector states deteriorates
Solution Approach 1:
The patent makes the detection line and thermistor multi-functional by using them for both temperature monitoring and connection quality detection. This universal approach allows a single integrated system to perform multiple detection functions, improving detection efficiency and accuracy without significantly increasing overall device complexity.
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
Enhances the efficiency and accuracy of detecting plug connector states, preventing burn-out accidents by implementing temperature abnormality regulation strategies like power consumption limitation, frequency reduction, or partial/power-down.
Implementation Method 1
the cable includes a power line, a grounding line, a detection line, and a plurality of thermistors
Implementation Method 2
a first end of the voltage dividing resistor and the plurality of thermistors are both connected to the detection line
Data Source
AI summary
The present application discloses a server card apparatus, a detection method therefor, and a detection device thereof, and a storage medium. The server card apparatus comprises: a mainboard, a card comprising a voltage dividing resistor, and a cable connected to the mainboard by means of a first plug connector and connected to the card by means of a second plug connector. The cable comprises a power line, a grounding line, a detection line, and a plurality of thermistors; and a BMC in the mainboard obtains electrical parameters of the plurality of thermistors by means of the detection line, and determines, according to the electrical parameters, whether the first plug connector and the second plug connector are abnormal or not.