CN116069581A - Power supply monitoring method and server - Google Patents
Power supply monitoring method and server Download PDFInfo
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- CN116069581A CN116069581A CN202111284465.0A CN202111284465A CN116069581A CN 116069581 A CN116069581 A CN 116069581A CN 202111284465 A CN202111284465 A CN 202111284465A CN 116069581 A CN116069581 A CN 116069581A
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- power supply
- supply unit
- server
- cable
- current value
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3058—Monitoring arrangements for monitoring environmental properties or parameters of the computing system or of the computing system component, e.g. monitoring of power, currents, temperature, humidity, position, vibrations
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/28—Supervision thereof, e.g. detecting power-supply failure by out of limits supervision
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computing Systems (AREA)
- Quality & Reliability (AREA)
- Power Engineering (AREA)
- Power Sources (AREA)
Abstract
A power monitoring method is executed by a server operated by receiving an output power provided by a power supply unit through a backboard, the power supply unit is connected with the backboard and the server through a first cable and a second cable respectively, the power monitoring method comprises the following steps: obtaining the voltage of a common contact between the first cable and the power supply unit; obtaining the voltage of a common contact between the second cable and the main board of the server; generating an amplified signal according to the voltages of the common contacts; reading an actual output current value from the power supply unit, and generating an equivalent resistance value according to the actual output current value and the amplified signal; judging whether the effective resistance values are larger than a critical equivalent resistance value or not; and if yes, sending out a system event notification.
Description
Technical Field
The present invention relates to a method and apparatus, and more particularly, to a power monitoring method and server.
Background
Referring to fig. 1, a motherboard included in a conventional server is operated by receiving an output power provided by a power supply unit through a backplane. The power supply unit is connected to the back plate and the server are connected to each other by a connector (or a cable or a copper foil or a bus bar) to transmit the output power. The server monitors the power supply of the server by utilizing a baseboard management controller arranged on the main board.
In detail, the baseboard management controller directly detects the output power supplied to the motherboard by the power supply unit through the connector and the backboard, and determines whether an actual voltage value of the output power received by the motherboard is greater than a predetermined voltage value (the actual voltage value changes with the server operating under low load or heavy load) so as to determine whether to trigger a fault handling procedure. For example, when the actual voltage value of the output power supply is smaller than the predetermined voltage value, the output power supply provided by the power supply unit is insufficient to provide the server for normal operation, so that the baseboard management controller triggers the fault handling procedure, i.e. sends a fault notification to a remote management computer, or sends an alarm message, or sends a down-conversion instruction to a central processor in the server to reduce the working frequency of the central processor, or causes the server to be powered off, etc. Otherwise, when the actual voltage value of the output power is greater than the predetermined voltage value, the output power provided by the power supply unit is sufficient to supply the server to operate normally, so that the baseboard management controller does not trigger the fault handling procedure.
However, when the contact resistance (or wire electrical group) of the transmission path for transmitting the output power source is too large due to the factors such as the increase of the working temperature, the aging of the material, or the poor contact, the voltage of the output power source is excessively attenuated. At this time, if the server is operating under a low load condition, the output power supply attenuated by the transmission path is still sufficient to supply the server to operate normally, so the baseboard management controller will not trigger the fault handling procedure. If the server is operating under heavy load, the baseboard management controller triggers the fault handling procedure because the output power after the attenuation of the transmission path is insufficient for the server to operate normally due to the large load current required by the server. In other words, the baseboard management controller cannot know that the server cannot normally operate when the server is operated under a heavy load in advance when the server is operated under a low load, and further cannot trigger the fault handling program in advance to improve or prevent. Therefore, there is a need for an improved server power monitoring mechanism.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a power supply monitoring method capable of overcoming the defects of the prior art.
In order to solve the above-mentioned technical problems, the present invention provides a power monitoring method implemented by a server, the server receives an output power provided by a power supply unit through a back plate, the power supply unit is connected with the back plate through a first cable, and the back plate is connected with the server through a second cable to transmit the output power, the server comprises a main board electrically connected with the second cable, the power monitoring method comprises:
(A) Obtaining a voltage of a first common contact between the first cable and the power supply unit;
(B) Obtaining a voltage of a second common contact between the second cable and the main board;
(C) Generating an amplified signal related to the voltage drop of the output power supply between the first and second common contacts according to the voltages of the first and second common contacts;
(D) Reading an actual output current value of the output power supply output by the power supply unit from the power supply unit, and generating an equivalent resistance value according to the actual output current value and the amplified signal;
(E) Judging whether the effective resistance values are larger than a critical equivalent resistance value or not; a kind of electronic device with high-pressure air-conditioning system
(F) If the determination result in the step (E) is yes, a system event notification indicating that the effective resistance values are larger than the critical equivalent resistance value is sent to a remote management computer.
Another technical problem to be solved by the present invention is to provide a server capable of overcoming the drawbacks of the prior art.
The server of the invention receives an output power supply provided by a power supply unit through a backboard, the power supply unit is connected with the backboard through a first cable, and the backboard is connected with the server through a second cable so as to transmit the output power supply. The server comprises a main board electrically connected with the second cable line to receive the output power supply. The motherboard includes an operational amplifier and a baseboard management controller.
The operational amplifier has a non-inverting input terminal electrically connected to a first common node between the first cable and the power supply unit, an inverting input terminal electrically connected to a second common node between the second cable and the motherboard, and an output terminal, and generates an amplified signal related to the voltage drop of the output power supply between the first and second common nodes at the output terminal according to the voltages of the first and second common nodes, and
the baseboard management controller reads an actual output current value in the output power supply output by the baseboard management controller from the power supply unit, is electrically connected with the output end of the operational amplifier to receive the amplified signal, generates an equivalent resistance value according to the actual output current value and the amplified signal, judges whether the equivalent resistance value is larger than a critical equivalent resistance value, and sends a system event notification indicating that the equivalent resistance value is larger than the critical equivalent resistance value to a remote management computer when the equivalent resistance value is larger than the critical equivalent resistance value.
Compared with the prior art, the invention has the advantages that by executing the power supply monitoring method, the baseboard management controller sends the system event notification in advance, so that a monitor can find out the problem that the output power supply voltage is attenuated beyond the target when the server is operated under a low load, and further can improve or prevent the situation in advance.
[ description of the drawings ]
Other features and advantages of the present invention will become apparent from the following description of the embodiments with reference to the drawings, in which:
FIG. 1 is a block diagram illustrating a prior art server;
FIG. 2 is a circuit block diagram illustrating one embodiment of a server according to the present invention; a kind of electronic device with high-pressure air-conditioning system
FIG. 3 is a flow chart illustrating a power monitoring method performed by the present invention.
[ detailed description ] of the invention
Referring to fig. 2, an embodiment of the server 1 of the present invention operates by receiving an output power Po provided by a power supply unit 3 through a back plate 2. The power supply unit 3 is connected with the back plate 2 through a first cable L1, and the back plate 2 is connected with the server 1 through a second cable L2 to transmit the output power Po. The back plate 2 is disposed in a Server Rack (not shown). The server 1 and the power supply unit 3 are respectively inserted on the back plate 2. It should be noted that, in other embodiments, each of the first and second cables L1 and L2 may be replaced by a connector or a copper foil, in other embodiments, the first and second cables L1 and L2 may be combined into a single cable, and the server 1 and the power supply unit 3 may be directly connected through the first and second cables L1 and L2 combined into a single cable.
In the present embodiment, the server 1 includes a main board 11 electrically connected to the second cable L2 to receive the output power Po. The motherboard 11 includes an operational amplifier 111, a baseboard management controller (Baseboard Management Controller, BMC) 112, and other necessary components (not shown), such as a CPU receiving the output power Po.
The operational amplifier 111 has a non-inverting input terminal electrically connected to a first common contact between the first cable L1 and the power supply unit 3, an inverting input terminal electrically connected to a second common contact between the second cable L2 and the motherboard 11, and an output terminal. The operational amplifier 111 generates an amplified signal As at the output terminal thereof in response to the voltages at the first and second common terminals in response to the voltage drop of the output power source Po between the first and second common terminals. It should be noted that, in the present embodiment, a third cable L3 is used to electrically connect the first common contact and the non-inverting output terminal of the operational amplifier 111, and the width of the third cable L3 is much smaller than the width of the first cable L1, the width of the third cable L3 is much smaller than the width of the second cable L2, and the widths of the first cable L1 and the second cable L2 are approximately the same, that is, the impedance of the first cable L1 and the second cable L2 is approximately the same, and the impedance of the first cable L1 and the second cable L2 is much smaller than the impedance of the third cable L3. Therefore, in the present embodiment, compared with the impedance of the third cable line L3, the impedance of the first cable line L1 and the impedance of the second cable line L2 can be regarded As zero, and the impedance of the third cable line L3 in normal operation is not greater than a threshold equivalent resistance value, so that the main board 11 can receive the power supply close to ideal and not attenuated by transmission through the cable lines from the first cable line L1 and the second cable line L2, that is, the main board 11 can know an ideal voltage value of the output power supply Po outputted by the power supply unit 3 to the main board 11 by the voltage of the power supply received by the first cable line L1 and the second cable line L2, and know an actual voltage value outputted by the power supply unit 3 to the output power supply Po of the main board 11 by the voltage of the voltage supply unit, and calculate a voltage drop between the ideal voltage value and the actual voltage value through the operational amplifier 111 As the amplified signal (that is, the common voltage value of the amplified voltage As is equal to the common voltage value of the amplified voltage As and the actual voltage As is subtracted from the common voltage value of the amplified signal As).
The baseboard management controller 112 is electrically connected to the output terminal of the operational amplifier 111 to receive the amplified signal As. The baseboard management controller 112 reads an actual output current value of the output power Po from the power supply unit 3, wherein the baseboard management controller 112 can communicate with the power supply unit 3 through a communication interface such as an internal integrated circuit Bus (Inter-integrated Circuit Bus, I2C Bus), a system management Bus (System Management Bus, SMBus), an intelligent platform management interface (Intelligent Platform Management Interface, IPMI), a power management Bus (Power Management Bus, PMBus) or a power supply management interface (Power Supply Management Interface, PSMI) to read the actual output current value corresponding to the output power Po output by the power supply unit 3, and other power-related signal data. Further, the baseboard management controller 112 transmits a current value query command to the power supply unit 3 via one of the communication interfaces, and the power supply unit 3 returns the actual output current value corresponding to the output power Po of the baseboard management controller 3 according to the current value query command. The baseboard management controller 112 calculates and generates an equivalent resistance value according to the amplified signal As and the actual output current value, and determines whether the equivalent resistance values are greater than the critical equivalent resistance value. If the third cable L3 does not affect the efficiency of the transmission power supply due to material aging or poor connection caused by no plugging, ideally, the effective resistance values calculated by the baseboard management controller 112 will not change substantially no matter the server 1 is operated under low load or high load, and the effective resistance values are not greater than the critical equivalent resistance value. When the third cable L3 is aged or not plugged to cause poor connection and affect the efficiency of the transmission power, the effective resistance values are larger than the critical equivalent resistance value when the server 1 is initially operated under a low load, so that the baseboard management controller 112 sends a system event notification Se indicating that the effective resistance values are larger than the critical equivalent resistance value to a remote management computer (not shown) for a monitor to monitor, so that the monitor can know in advance that the voltage of the output power Po is excessively attenuated when the server 1 is operated under a heavy load when the server 1 is still operated under a low load according to the system event notification Se, and the monitor can improve or prevent the situation that the output power Po is insufficient for the normal operation of the server 1 (for example, additionally add a power supply unit or replace the cable) in advance, so as to avoid the situation that the output power Po is insufficient for the normal operation of the server 1. When the effective resistance values are less than or equal to the critical equivalent resistance value, the baseboard management controller 112 does not send out the system event notification Se. In this embodiment, the baseboard management controller 112 divides the voltage value of the amplified signal As by the actual output current value to obtain the effective resistance values. The baseboard management controller 112 communicates with the power supply unit 3 through the back plate 2, but is not limited thereto. In other embodiments, the baseboard management controller 112 may also communicate directly with the power supply unit 3, and obtain the actual output current value in the output power Po outputted by the power supply unit 3 through communication.
Referring further to fig. 3, a power monitoring method performed by the server 1 and including the following steps 41 to 47 is described below.
In step 41, the operational amplifier 111 obtains the voltage of the first common node between the first cable L1 and the power supply unit 3.
In step 42, the operational amplifier 111 obtains the voltage of the second common connection point between the second cable L2 and the motherboard 11.
In step 43, the operational amplifier 111 generates the amplified signal As according to the voltages of the first and second common contacts.
In step 44, the baseboard management controller 112 reads the actual output current value of the output power source Po from the power supply unit 3, and generates the effective resistance values according to the actual output current value and the amplified signal As. In this embodiment, the baseboard management controller 112 transmits the current value inquiry command to the power supply unit 3, so that the power supply unit 3 returns the actual output current value to the baseboard management controller 112 according to the current value inquiry command.
In step 45, the baseboard management controller 112 determines whether the effective resistance values are greater than the critical equivalent resistance value. If yes, go to step 46; if not, go to step 47.
In step 46, the baseboard management controller 112 issues the system event notification Se to the remote management computer.
In step 47, the baseboard management controller 112 does not issue the system event notification Se.
For example, the power supply unit 3 has a specification of a maximum threshold voltage equal to 12V, a maximum threshold current equal to 82A, a maximum power equal to 1000W, and a voltage drop tolerance value of 5%. The voltage attenuation tolerance value of the output power Po supplied by the power supply unit 3 at the maximum threshold voltage and the maximum threshold current is calculated to be 0.6V (i.e., 12×5% =0.6V) according to this specification. That is, when the current of the output power Po is the maximum critical current, the voltage drop of the voltage decay of the output power Po is less than 0.6V. If the voltage drop of the voltage decay of the output power Po at the maximum threshold voltage and the maximum threshold current is less than 0.6V, the critical equivalent resistance (total (contact) line resistance) in the transmission path must be less than 7.3 milliohms (i.e. 0.6V/82 a= 0.00732 =7.3 milliohms).
In operation, when the server 1 is operated under low load, the actual output current value read by the baseboard management controller 112 from the power supply unit 3 is 10A, and the voltages detected by the non-inverting input terminal and the inverting input terminal of the operational amplifier 111 from the first and second common contacts are respectively 12V and 11.8V, the voltage drop representing the voltage attenuation of the output power Po is 0.2V (i.e. the voltage value of the amplified signal As). In this case, the output power Po provided by the power supply unit 3 is still sufficient to supply the server 1 operating at low load to operate normally, but the baseboard management controller 112 calculates the effective resistance values to be 20 milliohms (i.e. 0.2V/10a=20 milliohms), knowing that the effective resistance values are greater than the critical equivalent resistance value (which is limited to be less than 7.3 milliohms). In this way, the voltage of the output power source Po will be attenuated by the target problem if the server 1 is operated under heavy load. Therefore, the present invention executes the power monitoring method, and the baseboard management controller 112 sends the system event notification Se in advance, so as to assist the monitor to find out the problem of the voltage attenuation of the output power Po exceeding the target when the server 1 is operated under a heavy load, and the monitor can improve or prevent the problem in advance when the server 1 is also operated under a low load, so as to avoid the situation that the output power Po is insufficient for the normal operation of the server 1, and make the overall power monitoring mechanism more perfect, thus truly achieving the purpose of the present invention.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (10)
1. The power supply monitoring method is executed by a server, the server receives an output power supply provided by a power supply unit through a back plate and operates, the power supply unit is connected with the back plate through a first cable, the back plate is connected with the server through a second cable to transmit the output power, and the server comprises a main board electrically connected with the second cable, and is characterized in that the power supply monitoring method comprises the following steps:
(A) Obtaining a voltage of a first common contact between the first cable and the power supply unit;
(B) Obtaining a voltage of a second common contact between the second cable and the main board;
(C) Generating an amplified signal related to the voltage drop of the output power supply between the first and second common contacts according to the voltages of the first and second common contacts;
(D) Reading an actual output current value of the output power supply output by the power supply unit from the power supply unit, and generating an equivalent resistance value according to the actual output current value and the amplified signal;
(E) Judging whether the effective resistance values are larger than a critical equivalent resistance value or not; a kind of electronic device with high-pressure air-conditioning system
(F) If the determination result in the step (E) is yes, a system event notification indicating that the effective resistance values are larger than the critical equivalent resistance value is sent to a remote management computer.
2. The power monitoring method according to claim 1, wherein in step (D), a current value query command is transmitted to the power supply unit, so that the power supply unit returns the actual output current value according to the current value query command.
3. The power monitoring method according to claim 1, wherein if the determination in step (E) is negative, the baseboard management controller does not issue the system event notification.
4. The method of claim 1, wherein in step (E), the voltage value of the amplified signal is divided by the actual output current value to obtain the effective resistance values.
5. The method of claim 4, wherein the amplified signal has a voltage equal to the voltage at the second common node minus the voltage at the first common node.
6. A server for receiving an output power from a power supply unit via a back plate, the power supply unit being connected to the back plate via a first cable, and the back plate being connected to the server via a second cable for transmitting the output power, the server comprising:
a main board electrically connected to the second cable for receiving the output power, including
An operational amplifier having a non-inverting input terminal electrically connected to a first common node between the first cable and the power supply unit, an inverting input terminal electrically connected to a second common node between the second cable and the motherboard, and an output terminal, the operational amplifier generating an amplified signal at the output terminal in response to voltages at the first and second common nodes, the amplified signal being related to a voltage drop of the output power supply between the first and second common nodes, and
and the baseboard management controller is electrically connected with the output end of the operational amplifier to receive the amplified signal, reads an actual output current value in the output power supply output by the operational amplifier from the power supply unit, generates an equivalent resistance value according to the amplified signal and the actual output current value, judges whether the effective resistance value is larger than a critical equivalent resistance value, and sends a system event notification indicating that the effective resistance value is larger than the critical equivalent resistance value to a remote management computer when the effective resistance value is larger than the critical equivalent resistance value.
7. The server of claim 6, wherein the baseboard management controller does not send the system event notification when the effective resistance is less than or equal to the threshold equivalent resistance.
8. The server of claim 6, wherein the baseboard management controller divides the voltage value of the amplified signal by the actual output current value to obtain the effective resistance values.
9. The server of claim 6, wherein the baseboard management controller communicates with the power supply unit via one of an internal integrated circuit bus, a system management bus, an intelligent platform management interface, a power management bus, and a power supply management interface to read the actual output current value.
10. The server of claim 9, wherein the baseboard management controller transmits a current value query command to the power supply unit, and the power supply unit returns the actual output current value to the baseboard management controller according to the current value query command.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111284465.0A CN116069581A (en) | 2021-11-01 | 2021-11-01 | Power supply monitoring method and server |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111284465.0A CN116069581A (en) | 2021-11-01 | 2021-11-01 | Power supply monitoring method and server |
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| Publication Number | Publication Date |
|---|---|
| CN116069581A true CN116069581A (en) | 2023-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111284465.0A Pending CN116069581A (en) | 2021-11-01 | 2021-11-01 | Power supply monitoring method and server |
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| Country | Link |
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| CN (1) | CN116069581A (en) |
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2021
- 2021-11-01 CN CN202111284465.0A patent/CN116069581A/en active Pending
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