System for measuring current of server power supply in lossless non-disassembly way

Abstract

The invention relates to a system for measuring current of a server power supply in a lossless non-disassembly way. The system is characterized by comprising a conductor through which current to be measured flows and a hall current sensor, wherein the conductor through which the current to be measured flows passes through the hall current sensor; the hall current sensor is connected with a microprogrammed control unit (MCU); the MCU is connected with an LCD (Liquid Crystal Display); an analog to digital converter (ADC) and an SPI (Serial Peripheral Interface) port are arranged inside the MCU; an input port of the ADC is ADI; the MCU is used for driving the LCD through the SPI port to realize real-time current display or reading a measured current value through a serial port built in the MCU. By adopting the system, non-disassembly operation of current testing is realized; meanwhile, the implementation of services of a measured system is not influenced; the system is suitable for the service uninterrupted characteristic of a server, measurement is directly performed on a cable to be tested by adopting a fixture, running of the whole system is not influenced, and testing errors are reduced.

Description

technical field [0001] The invention belongs to the technical field of server power supply current measurement, and in particular relates to a system for realizing non-destructive and disassembly-free measurement of server power supply current. Background technique [0002] For servers, 12V is the main power supply, which is particularly important. It is the power source of the entire server. At present, the computing density of server nodes is increasing. Graphics processors, GPU computing cards and server motherboards have strict specifications for the voltage and current of the power supply, generally between 12V-13V, and the server design must meet this specification, otherwise it will easily cause the entire node to go down, power down and other serious problems event. [0003] At present, the main solution for current monitoring of this power supply is to connect a micro-value resistor in series with the main board or power line, and to further calculate the current a...

AI Technical Summary

Problems solved by technology

However, this solution needs to rework the motherboard or power cord, which affects the test efficiency.

And the resistance will cause a certain voltage drop, which is easy to cause instability to the back-end system, so this method is not suitable for testing large current measurement (the voltage drop caused by large current is larger)

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