CN105045705A - Power consumption monitoring unit and system - Google Patents
Power consumption monitoring unit and system Download PDFInfo
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- CN105045705A CN105045705A CN201510397381.6A CN201510397381A CN105045705A CN 105045705 A CN105045705 A CN 105045705A CN 201510397381 A CN201510397381 A CN 201510397381A CN 105045705 A CN105045705 A CN 105045705A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
The invention provides a power consumption monitoring unit and system. The power consumption monitoring unit comprises a first resistor, a second resistor, an operational amplifier, a comparator and a switching module, wherein the first end of an external resistance module is connected with a first end of the first resistor; the second end of the resistance module is connected with the first input end of the operational amplifier; the second end of the resistance module is connected with an external processor; the second end of the first resistor is connected with the second input end of the operational amplifier; the output end of the operational amplifier, the second end of the first resistor and the first end of the second resistor are all connected with the switching module; the second end of the second resistor is earthed; the second end of the second resistor is connected with the first input end of the comparator; the second input end of the comparator loads voltage of a first preset value; and the output end of the comparator is used for outputting a monitoring result signal. The invention provides the power consumption monitoring unit and system which can shorten the time of a monitoring process.
Description
Technical field
The present invention relates to electronic technology field, particularly a kind of power consumption monitoring means and system.
Background technology
Along with the fast development of computer technology, increasing incorporated business joins the development tide of cloud computing, large data.Cloud computing center, large data center are able to fast development and growth, and demand and the use of thing followed server and storage also get more and more.In such cases, how to allow each system can play its due usefulness, power consumption monitoring can be carried out to the server stores exceeding system loading in suitable again and protection becomes particularly important.
Traditional power consumption monitoring method for designing is: in power module or power adjustment module to monitor power consumption: a kind of monitoring connected mode, as shown in Figure 1, power module 101 is connected with power adjustment module 102, power adjustment module 102 is connected with processor 103 by two paths, a path is used for powering to processor 103, this path can regard a resistive module as, another path is used for sending PROCHOT# signal to processor 103, inform that the current power consumption of processing unit of processor 103 exceedes the design upper limit, carry out reducing power consumption process to make processor 103; Another kind of monitoring connected mode, as shown in Figure 2, power module 201 is connected with power adjustment module 202, power adjustment module 202 is connected with processor 203 by a path, this path is used for powering to processor 203, and power module 201 is connected with processor 203, and power module 201 sends PROCHOT# signal to processor 203, inform that the current power consumption of processing unit of processor 203 exceedes the design upper limit, carry out reducing power consumption process to make processor 203.
Visible by foregoing description, in prior art, carry out detection system power consumption by power module or power adjustment module, after having detected, testing result is converted to PROCHOT# signal and send to processor, the time that observation process consumes is longer.
Summary of the invention
In view of this, the invention provides a kind of power consumption monitoring means and system, the time of observation process can be reduced.
First aspect, the invention provides a kind of power consumption monitoring means, comprising:
First resistance, the second resistance, operational amplifier, comparer, switch module;
The first end of outside resistive module is connected with the first end of the first resistance, second end of resistive module is connected with the first input end of operational amplifier, second end of resistive module is connected with the processor of outside, second end of the first resistance is connected with the second input end of operational amplifier, the output terminal of operational amplifier, second end of the first resistance is all connected with described switch module with the first end of the second resistance, second end ground connection of the second resistance, second end of the second resistance is connected with the first input end of comparer, second input end of comparer loads the voltage of the first preset value size, the output terminal of described comparer is for exporting monitoring result signals.
Further, comprising:
Described switch module is MOSFET, and the output terminal of described operational amplifier is connected with the grid of MOSFET, and the second end of the first resistance is connected with the source electrode of MOSFET, and the first end of the second resistance is connected with the drain electrode of MOSFET;
Further, the second end of described resistive module is connected with the power pins of described processor.
Further, comprising:
The first input end of described operational amplifier is the negative input of operational amplifier, and the second input end of described operational amplifier is the electrode input end of operational amplifier;
Second end of described resistive module is connected with the first input end of operational amplifier, comprising: the second end of described resistive module is connected with the negative input of operational amplifier;
Second end of described first resistance is connected with the second input end of operational amplifier, comprising: the second end of described first resistance is connected with the electrode input end of operational amplifier.
Further, comprising:
Described first resistance is precision resistance, and described second resistance is precision resistance;
Further, described first resistance is thermistor.
Further, comprising:
It is inner that described operational amplifier, described switch module and described comparer are encapsulated in described processor;
Further, the output terminal of described comparer is connected with the trigger pin of described processor.
Further, comprising:
The difference of the temperature-coefficient of electrical resistance of described first resistance and the temperature-coefficient of electrical resistance of described copper coin resistive module is less than or equal to the second preset value;
Further, the size of described second resistance is 0.161/R, and wherein, R is the resistance of the equivalent resistance of described resistive module.
Further, comprising:
The size of described first resistance is 100 ohm, and precision is 1%;
Further, the size of described second resistance is 249 ohm, and precision is 0.1%.
Second aspect, the invention provides a kind of power consumption monitoring system, comprising:
Power adjustment module, as the power consumption monitoring means as described in arbitrary in first aspect;
Described power adjustment module is connected with described power consumption monitoring means.
Further, also comprise:
Power module; Described power module is connected with described power adjustment module;
Further, the first end of described resistive module is connected with power adjustment module.
Further, described resistive module comprises: copper coin circuit board connecting described power adjustment module and described processor, and described first resistance is positioned on the surface of described copper coin.
The invention provides a kind of power consumption monitoring means and system, the voltage of processor is generally be stabilized in its operating voltage place, the change of power consumption of processing unit mainly comes from the change of processor input current, for the ease of monitoring, the change of processor input current can be converted to the change of voltage, by resistive module R1, first resistance R2, second resistance R3 forms loop, resistive module R1 is connected with processor, for processor provides input current, by this loop, the change of input current is converted to the change of the voltage of the second resistance R3, the voltage of the voltage of R3 and the first preset value size is compared by comparer, monitoring result signals is exported by comparer, the low and high level signal that the direct output processor of comparer can identify, without the need to converting PROCHOT# signal to, save switching time, reduce the time of observation process.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of a kind of power consumption monitoring system of the prior art;
Fig. 2 is the schematic diagram of another kind of power consumption monitoring system of the prior art;
Fig. 3 is the schematic diagram of a kind of power consumption monitoring means that one embodiment of the invention provides;
Fig. 4 is the schematic diagram of the another kind of power consumption monitoring means that one embodiment of the invention provides;
Fig. 5 is the schematic diagram of a kind of monitoring time that one embodiment of the invention provides;
Fig. 6 is the schematic diagram of a kind of power consumption monitoring system that one embodiment of the invention provides.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly; below in conjunction with the accompanying drawing in the embodiment of the present invention; technical scheme in the embodiment of the present invention is clearly and completely described; obviously; described embodiment is the present invention's part embodiment, instead of whole embodiments, based on the embodiment in the present invention; the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of protection of the invention.
Embodiment 1:
As shown in Figure 3, embodiments provide a kind of power consumption monitoring means, comprising:
First resistance R1, the second resistance R2, operational amplifier F, comparer B, switch module K;
The first end of outside resistive module R1 is connected with the first end of the first resistance R2, second end of resistive module R1 is connected with the first input end of operational amplifier F, second end of resistive module R1 is connected with the processor C of outside, second end of the first resistance R2 is connected with second input end of operational amplifier F, the output terminal of operational amplifier, second end of the first resistance is all connected with described switch module with the first end of the second resistance, the second end ground connection of the second resistance R3, second end of the second resistance R3 is connected with the first input end of comparer B, second input end of comparer B loads the voltage V of the first preset value size, the output terminal of described comparer B is for exporting monitoring result signals.
By a kind of power consumption monitoring means that the embodiment of the present invention provides, the voltage of processor is generally be stabilized in its operating voltage place, the change of power consumption of processing unit mainly comes from the change of processor input current, for the ease of monitoring, the change of processor input current can be converted to the change of voltage, by resistive module R1, first resistance R2, second resistance R3 forms loop, resistive module R1 is connected with processor, for processor provides input current, by this loop, the change of input current is converted to the change of the voltage of the second resistance R3, the voltage of the voltage of R3 and the first preset value size is compared by comparer, monitoring result signals is exported by comparer, the low and high level signal that the direct output processor of comparer can identify, without the need to converting PROCHOT# signal to, save switching time, reduce the time of observation process.
In a kind of possible implementation, described switch module is MOSFET, and the output terminal of described operational amplifier is connected with the grid of MOSFET, and the second end of the first resistance is connected with the source electrode of MOSFET, the first end of the second resistance is connected with the drain electrode of MOSFET, as shown in Figure 4.
In a kind of possible implementation, power consumption monitoring means, comprising:
The first input end of described operational amplifier is the negative input of operational amplifier, and the second input end of described operational amplifier is the electrode input end of operational amplifier.
Second end of described resistive module is connected with the first input end of operational amplifier, comprising: the second end of described resistive module is connected with the negative input of operational amplifier.
Second end of described first resistance is connected with the second input end of operational amplifier, comprising: the second end of described first resistance is connected with the electrode input end of operational amplifier.
In order to make the resistance of the second resistance can reflect current power consumption of processing unit situation more accurately, in a kind of possible implementation, described first resistance is precision resistance, and described second resistance is precision resistance.Wherein, the size of described first resistance can be 100 ohm, and precision can be 1%; The size of described second resistance can be 249 ohm, and precision can be 0.1%.
In a kind of possible implementation, the size of described second resistance can be 0.161/R, and wherein, R is the resistance of the equivalent resistance of described resistive module.The size of the second resistance is stated in such selection, can reflect current power consumption of processing unit situation more accurately.
In a kind of possible implementation, the difference of the temperature-coefficient of electrical resistance of described first resistance and the temperature-coefficient of electrical resistance of described copper coin is less than or equal to the second preset value.This second preset value is the smaller the better.
In a kind of possible implementation, it is inner that described operational amplifier, described switch module and described comparer are encapsulated in described processor.The time monitoring result signals that the output terminal of comparer exports being transferred to processor can be saved like this.Wherein, the output terminal of described comparer can be connected with the trigger pin of described processor.
After the trigger pin of processor receives the output terminal monitoring result signals of comparer, carry out reducing power consumption process, when after lower power consumption to the power consumption number preset, the power consumption number place that general needs are preset at this maintains a period of time, this time can be set in advance as 10ms, compared with 100ms of the prior art, the time less of maintenance.As shown in Figure 5, the schematic diagram of the regulation time of the Curve guide impeller in the initial designs of prior art and the embodiment of the present invention, as can be seen from the figure, from Pa, monitor power consumption exceed preset value to by the time required for regulating power consumption to Pb, Curve guide impeller will be less than initial designs.
Voltage V3=(R1/R2) the * R3*Iin of the second resistance, R1 is the equivalent resistance of resistive module, and R2 is the resistance of the first resistance, and R3 is the resistance of the second resistance, and Iin is input current.Can find out according to this formula, in order to ensure that V3 reflects current power consumption of processing unit situation more accurately, need to reduce R1/R2 to the impact of V3, because the resistance of resistance can change along with the change of temperature, therefore in order to reduce the impact of temperature variation on R1/R2, can choose the first resistance is thermistor, and the temperature-coefficient of electrical resistance can choosing the temperature-coefficient of electrical resistance of the first resistance and resistive module is close.
The voltage of the first preset value size in the embodiment of the present invention obtains according to the maximum power dissipation of the processor allowed.For example, processor required voltage is 1.8V, the electric current 200A needed, the maximum power dissipation allowed is 360w, (R1/R2) * R3 is 1.61mohm, voltage=(R1/R2) * R3*Iin=1.61mohm*200A=0.322V of R3, can be set to 0.322V by the first preset value.When input current is 2010A: R3 voltage=1.61m*210=0.338, is greater than 0.322, Trigger processor reducing power consumption.Can by R2 be set to be far longer than R1, with the electric current making the electric current of R2 place branch road be far smaller than R1 place branch road, make the voltage of R3 more accurate.
The course of work of a kind of power consumption monitoring means that the embodiment of the present invention provides is as follows:
Resistive module is connected with processor, resistive module provides electric current for processor, operational amplifier output terminal output signal makes MOSFET open, first resistance is connected with the second resistance, second resistance is connected with the first input end of comparer, along with the electric current of the first end of resistive module increases, according to voltage V3=(R1/R2) the * R3*Iin of formula second resistance, known, the voltage of the second resistance constantly increases, when the voltage of the second resistance is greater than the voltage of the second input end of comparer, comparer exports high level, after processor receives high level signal, carry out reducing power consumption process.
Embodiment 2:
See Fig. 6, a kind of power consumption monitoring system that the embodiment of the present invention provides, comprising:
Power adjustment module 601, as the power consumption monitoring means 602 as described in arbitrary in embodiment 1;
Described power adjustment module 601 is connected with described power consumption monitoring means 602.
Wherein, power consumption monitoring means 602 is connected with the processor 603 of outside.
In a kind of possible implementation, also comprise: power module; Described power module is connected with described power adjustment module.
In a kind of possible implementation, the first end of described resistive module is connected with power adjustment module.Power adjustment module is connected with processor by resistive module, for processor provides power supply.Second end of described resistive module is connected with the power pins of described processor.
In order to ensure the temperature close of resistive module and the first resistance as far as possible, in a kind of possible implementation, described resistive module comprises: copper coin circuit board connecting described power adjustment module and described processor, and described first resistance is positioned on the surface of described copper coin.First resistance can be arranged and the centre position on the surface of described copper coin.Can be made the temperature close of resistive module and the first resistance by this implementation, when the two temperature-coefficient of electrical resistance is close, the voltage temperature influence of the second resistance can be made less, and the voltage of the second resistance is more accurate.
In a kind of possible implementation, described resistive module is the connecting path of described power adjustment module and described processor, can comprise: mainboard path equivalent resistance, encapsulation equivalent resistance, slot equivalent resistance.
In a kind of possible implementation, the first end of described resistive module loads the input current that promising described processor provides.
A kind of power consumption monitoring means that the embodiment of the present invention provides, has following beneficial effect:
1, a kind of power consumption monitoring means provided by the embodiment of the present invention and system, the voltage of processor is generally be stabilized in its operating voltage place, the change of power consumption of processing unit mainly comes from the change of processor input current, for the ease of monitoring, the change of processor input current can be converted to the change of voltage, by resistive module R1, first resistance R2, second resistance R3 forms loop, resistive module R1 is connected with processor, for processor provides input current, by this loop, the change of input current is converted to the change of the voltage of the second resistance R3, the voltage of the voltage of R3 and the first preset value size is compared by comparer, monitoring result signals is exported by comparer, the low and high level signal that the direct output processor of comparer can identify, without the need to converting PROCHOT# signal to, save switching time, reduce the time of observation process.
2, a kind of power consumption monitoring means provided by the embodiment of the present invention and system, operational amplifier, described MOSFET and described comparer are encapsulated in described processor inner, save the time monitoring result signals that the output terminal of comparer exports being transferred to processor.
3, a kind of power consumption monitoring means provided by the embodiment of the present invention and system, directly by the output terminal of comparer, monitoring result signals is exported to processor, do not need to convert PROCHOT# signal to, power module and power adjustment module no longer need reserved PROCHOT# line related, can greatly reduce its design size, save circuit board wiring cloth board space, reduce design cost.
It should be noted that, in this article, the relational terms of such as first and second and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other same factor.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that programmed instruction is relevant, aforesaid program can be stored in the storage medium of embodied on computer readable, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium in.
Finally it should be noted that: the foregoing is only preferred embodiment of the present invention, only for illustration of technical scheme of the present invention, be not intended to limit protection scope of the present invention.All any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., be all included in protection scope of the present invention.
Claims (10)
1. a power consumption monitoring means, is characterized in that, comprising:
First resistance, the second resistance, operational amplifier, comparer, switch module;
The first end of outside resistive module is connected with the first end of the first resistance, second end of resistive module is connected with the first input end of operational amplifier, second end of resistive module is connected with the processor of outside, second end of the first resistance is connected with the second input end of operational amplifier, the output terminal of operational amplifier, second end of the first resistance is all connected with described switch module with the first end of the second resistance, second end ground connection of the second resistance, second end of the second resistance is connected with the first input end of comparer, second input end of comparer loads the voltage of the first preset value size, the output terminal of described comparer is for exporting monitoring result signals.
2. unit according to claim 1, is characterized in that, comprising:
Described switch module is MOSFET, and the output terminal of described operational amplifier is connected with the grid of MOSFET, and the second end of the first resistance is connected with the source electrode of MOSFET, and the first end of the second resistance is connected with the drain electrode of MOSFET;
And/or,
Second end of described resistive module is connected with the power pins of described processor.
3. unit according to claim 1, is characterized in that, comprising:
The first input end of described operational amplifier is the negative input of operational amplifier, and the second input end of described operational amplifier is the electrode input end of operational amplifier;
Second end of described resistive module is connected with the first input end of operational amplifier, comprising: the second end of described resistive module is connected with the negative input of operational amplifier;
Second end of described first resistance is connected with the second input end of operational amplifier, comprising: the second end of described first resistance is connected with the electrode input end of operational amplifier.
4. unit according to claim 1, is characterized in that, comprising:
Described first resistance is precision resistance, and described second resistance is precision resistance;
And/or,
Described first resistance is thermistor.
5. unit according to claim 1, is characterized in that, comprising:
It is inner that described operational amplifier, described switch module and described comparer are encapsulated in described processor;
And/or,
The output terminal of described comparer is connected with the trigger pin of described processor.
6. unit according to claim 1, is characterized in that, comprising:
The difference of the temperature-coefficient of electrical resistance of described first resistance and the temperature-coefficient of electrical resistance of described copper coin resistive module is less than or equal to the second preset value;
And/or,
The size of described second resistance is 0.161/R, and wherein, R is the resistance of the equivalent resistance of described resistive module.
7. unit according to claim 1, is characterized in that, comprising:
The size of described first resistance is 100 ohm, and precision is 1%;
And/or,
The size of described second resistance is 249 ohm, and precision is 0.1%.
8. a power consumption monitoring system, is characterized in that, comprising:
Power adjustment module, as the power consumption monitoring means as described in arbitrary in claim 1-7;
Described power adjustment module is connected with described power consumption monitoring means.
9. system according to claim 8, is characterized in that, also comprises:
Power module; Described power module is connected with described power adjustment module;
And/or,
The first end of described resistive module is connected with power adjustment module.
10. system according to claim 8, is characterized in that,
Described resistive module comprises: copper coin circuit board connecting described power adjustment module and described processor, and described first resistance is positioned on the surface of described copper coin.
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| CN201510397381.6A CN105045705B (en) | 2015-07-08 | 2015-07-08 | A kind of power consumption monitoring unit and system |
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| CN201510397381.6A CN105045705B (en) | 2015-07-08 | 2015-07-08 | A kind of power consumption monitoring unit and system |
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| CN105045705B CN105045705B (en) | 2018-02-23 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1858715A (en) * | 2005-04-30 | 2006-11-08 | 华硕电脑股份有限公司 | Temperature detecting and control circuit |
| US20100281309A1 (en) * | 2009-04-30 | 2010-11-04 | Gilbert Laurenti | Power Management Events Profiling |
| CN102957129A (en) * | 2011-08-18 | 2013-03-06 | 上海晨兴希姆通电子科技有限公司 | Over-temperature protection terminal for control of hardware |
| CN103575954A (en) * | 2012-07-23 | 2014-02-12 | 上海粱江通信系统股份有限公司 | Power source monitoring system |
-
2015
- 2015-07-08 CN CN201510397381.6A patent/CN105045705B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1858715A (en) * | 2005-04-30 | 2006-11-08 | 华硕电脑股份有限公司 | Temperature detecting and control circuit |
| US20100281309A1 (en) * | 2009-04-30 | 2010-11-04 | Gilbert Laurenti | Power Management Events Profiling |
| CN102957129A (en) * | 2011-08-18 | 2013-03-06 | 上海晨兴希姆通电子科技有限公司 | Over-temperature protection terminal for control of hardware |
| CN103575954A (en) * | 2012-07-23 | 2014-02-12 | 上海粱江通信系统股份有限公司 | Power source monitoring system |
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