CN110134217B - CPU power consumption management device - Google Patents
CPU power consumption management device Download PDFInfo
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- CN110134217B CN110134217B CN201910283659.5A CN201910283659A CN110134217B CN 110134217 B CN110134217 B CN 110134217B CN 201910283659 A CN201910283659 A CN 201910283659A CN 110134217 B CN110134217 B CN 110134217B
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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
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
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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
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/324—Power saving characterised by the action undertaken by lowering clock frequency
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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
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/3296—Power saving characterised by the action undertaken by lowering the supply or operating voltage
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Abstract
The invention discloses a CPU power consumption management device, which comprises a monitoring module, a control module, an ADC/DAC module and a power supply module, wherein the monitoring module is used for monitoring the power consumption of a CPU; the monitoring module is used for acquiring the real-time state information of the CPU at preset time intervals; the real-time state information comprises the lowest working voltage of the CPU, load current, the environment temperature of the CPU and the core temperature of the CPU; the control module is used for generating a corresponding voltage control signal according to the real-time state information and sending the voltage control signal to the ADC/DAC module; the control module is also used for generating a corresponding frequency control signal according to the real-time state information and sending the frequency control signal to the power supply module; the ADC/DAC module is used for adjusting the output voltage of the power supply module according to the received voltage control signal; the output voltage is the working voltage of the CPU; the power supply module is used for adjusting the working frequency according to the received frequency control signal; the power supply module is also used for supplying electric energy to the CPU. The invention can automatically manage the CPU power consumption and improve the stability of the CPU.
Description
Technical Field
The invention relates to the technical field of power consumption control, in particular to a CPU power consumption management device.
Background
At present, the market consumption demand of electronic products pushes technical development, so that the operation speed of a CPU of the electronic products is faster and faster, the packaging is smaller and smaller, the power consumption of the CPU becomes the bottleneck of the technical development, the temperature of the CPU is higher due to larger power consumption, the stability of the CPU is influenced, and the power consumption management of the CPU becomes especially important.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a CPU power consumption management device, which can automatically manage CPU power consumption and improve CPU stability.
In order to solve the above technical problem, an embodiment of the present invention provides a CPU power consumption management apparatus, including a monitoring module, a control module, an ADC/DAC module, and a power supply module;
the monitoring module is used for acquiring real-time state information of the CPU at preset time intervals; the real-time state information comprises the lowest working voltage of the CPU, load current, the environment temperature of the CPU and the core temperature of the CPU;
the control module is used for generating a corresponding voltage control signal according to the real-time state information and sending the voltage control signal to the ADC/DAC module; the control module is also used for generating a corresponding frequency control signal according to the real-time state information and sending the frequency control signal to the power supply module;
the ADC/DAC module is used for adjusting the output voltage of the power supply module according to the received voltage control signal; wherein, the output voltage is the working voltage of the CPU;
the power supply module is used for adjusting the working frequency of the power supply module according to the received frequency control signal; the power supply module is also used for supplying electric energy to the CPU.
Further, the control module is specifically configured to obtain a current optimal operating voltage of the CPU according to the real-time status information and a preset operating parameter table, and generate the voltage control signal according to the current optimal operating voltage and send the voltage control signal to the ADC/DAC module.
Further, the control module is specifically configured to obtain a current optimal operating frequency of the power supply module according to the real-time status information and a preset operating parameter table, and generate the frequency control signal according to the current optimal operating frequency and send the frequency control signal to the power supply module.
Further, the monitoring module and the control module are integrated inside the CPU.
Further, the power supply module is a voltage converter.
Further, the device also comprises a clock module and a phase-locked loop module;
the control module is specifically used for acquiring the current optimal working frequency of the power supply module according to the real-time state information;
the clock module and the phase-locked loop module are used for generating corresponding synchronous clock signals according to the current optimal working frequency and sending the synchronous clock signals to the power supply module; wherein the synchronous clock signal is the frequency control signal.
Further, the clock module is a clock oscillator.
Further, the clock module and the phase-locked loop module are integrated inside the CPU.
Compared with the prior art, the embodiment of the invention provides the CPU power consumption management device, which obtains the real-time state information of the CPU at preset time intervals through the monitoring module; respectively generating corresponding voltage control signals according to the real-time state information of the CPU through the control module, sending the voltage control signals to the ADC/DAC module, generating corresponding frequency control signals, and sending the frequency control signals to the power supply module; the ADC/DAC module adjusts the output voltage of the power supply module according to the received voltage control signal, wherein the output voltage is the working voltage of the CPU; the power supply module adjusts the working frequency of the power supply module according to the received frequency control signal; the power supply module is used for supplying electric energy to the CPU; the CPU power consumption can be automatically managed through the adjustment of the CPU working voltage and the working frequency of the power supply module, so that the stability of the CPU is improved.
Drawings
Fig. 1 is a block diagram of a CPU power consumption management apparatus according to a preferred embodiment of the present invention;
FIG. 2 is a block diagram of another preferred embodiment of a CPU power consumption management apparatus according to the present invention;
FIG. 3 is a schematic block diagram of voltage regulation of a CPU power consumption management apparatus according to the present invention;
fig. 4 is a schematic block diagram of the frequency adjustment of the CPU power consumption management apparatus according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.
An embodiment of the present invention provides a CPU power consumption management device, which is shown in fig. 1 and is a block diagram of a preferred embodiment of the CPU power consumption management device provided in the present invention, where the device includes a monitoring module 100, a control module 200, an ADC/DAC module 300, and a power supply module 400;
the monitoring module 100 is configured to obtain real-time status information of the CPU at preset intervals; the real-time state information comprises the lowest working voltage of the CPU, load current, the environment temperature of the CPU and the core temperature of the CPU;
the control module 200 is configured to generate a corresponding voltage control signal according to the real-time status information and send the voltage control signal to the ADC/DAC module 300; the control module 200 is further configured to generate a corresponding frequency control signal according to the real-time status information and send the frequency control signal to the power supply module 400;
the ADC/DAC module 300 is configured to adjust an output voltage of the power supply module 400 according to the received voltage control signal; wherein, the output voltage is the working voltage of the CPU;
the power supply module 400 is configured to adjust its own operating frequency according to the received frequency control signal; the power supply module 400 is also used for supplying electric energy to the CPU.
Specifically, during the running period of the CPU, the real-time state information of the CPU is obtained by monitoring at intervals of a preset time (which can be set according to actual needs) by the monitoring module, where the real-time state information includes the lowest working voltage required for normal running of the current CPU, the real-time load current of the CPU, the current ambient temperature of the CPU, and the current core temperature of the CPU; respectively generating corresponding voltage control signals according to the acquired real-time state information of the CPU through a control module, sending the voltage control signals to an ADC/DAC module, generating corresponding frequency control signals, and sending the frequency control signals to a power supply module; the ADC/DAC module adjusts the output voltage of the power supply module according to the received voltage control signal, the power supply module provides electric energy for the CPU, and the output voltage of the power supply module is the working voltage of the CPU, so that the adjustment of the working voltage of the CPU is realized; and the power supply module adjusts the working frequency of the power supply module according to the received frequency control signal.
It should be noted that the monitoring module includes a large number of ring oscillotors of different circuits, and generally includes a sensor, a data acquisition unit, a data processing unit, and a diagnostic circuit, and through these circuit components, the monitoring module can acquire real-time state information of the CPU, that is, state information such as the minimum operating voltage of the CPU, load data of the CPU, the ambient temperature of the CPU, and the core temperature of the CPU, which are required on the premise of ensuring the performance of the CPU.
In addition, different CPUs have slight differences in power supply voltage required by the CPUs during actual operation due to differences in manufacturing processes, differences in ambient temperatures, differences in loads, and the like, and for a power supply with a large supply current, if the working voltage can be reduced on the premise of meeting the performance, the power consumption of the CPUs can be optimized.
Because the change of the working frequency of the CPU greatly affects the stability of the whole machine, the embodiment of the invention only changes the working frequency of a power supply module (such as a DC chip) for supplying power to the CPU; the working frequency of the DC chip is adjusted to achieve two purposes: (1) the voltage efficiency of the DC chip is different under different working frequencies, for example, when the load is lighter, the DC chip can work at a lower frequency, and then the DC chip can enter a light-load high-efficiency mode; (2) the DC chip can generate certain interference to other adjacent circuits, the interference to some simulation products, particularly to working frequency near the DC chip, can be increased, and the purpose of optimizing performance can be achieved by adjusting the working frequency of the DC chip and avoiding the frequency of the interference.
The CPU power consumption management device provided by the embodiment of the invention can automatically adjust the working voltage of the CPU according to the real-time state information of the CPU, on the basis of ensuring the normal operation, the working voltage of the CPU is as low as possible, the CPU power consumption is reduced, meanwhile, the working frequency of the power supply module of the CPU can be automatically adjusted according to the real-time state information of the CPU, the interference of the power supply module on circuits close to the circuit, particularly circuits with the working frequency close to the working frequency of the power supply module is reduced, the CPU performance is optimized, the automatic management of the CPU power consumption is realized through the automatic adjustment of the working voltage of the CPU and the working frequency of the power supply module, and the stability of the CPU is improved.
As a preferred scheme, the control module is specifically configured to obtain a current optimal operating voltage of the CPU according to the real-time status information and a preset operating parameter table, and generate the voltage control signal according to the current optimal operating voltage and send the voltage control signal to the ADC/DAC module.
As a preferred scheme, the control module is specifically configured to obtain a current optimal operating frequency of the power supply module according to the real-time status information and a preset operating parameter table, and generate the frequency control signal according to the current optimal operating frequency and send the frequency control signal to the power supply module.
Specifically, with the above embodiment, after different CPU chips are mounted on the upper board, the minimum working voltages actually required are different due to different chip manufacturing processes, different environmental temperatures and different loads, that is, the same piece of hardware is at different environmental temperatures and connected to different loads, and the minimum working voltages required are different; the monitoring module can acquire real-time state information of the CPU through the internal composition unit, the control module calculates the current optimal working voltage (namely the lowest voltage required by the current normal work of the CPU) and the current optimal working frequency of the power supply module by looking up a table (a preset working parameter table maintained in software is arranged) according to the real-time state information of the CPU by combining an internal software algorithm and determining which range each parameter is in and how much the voltage requirement is the lowest, generates a corresponding voltage control signal according to the current optimal working voltage of the CPU and sends the corresponding frequency control signal to the ADC/DAC module, generates a corresponding frequency control signal according to the current optimal working frequency of the power supply module and sends the corresponding frequency control signal to the power supply module, so that the ADC/DAC module controls the power supply module for supplying power to the CPU according to the voltage control signal and adjusts the output voltage of the power supply module to, so that the power supply module adjusts the working frequency of the power supply module according to the frequency control signal.
It should be noted that, the higher the ambient temperature of the CPU is, the lower the operating voltage may be; the lower the load of the CPU, the lower the working voltage can be, and the working frequency of the power supply module can also be adjusted to be low; the better the chip process (when the wafer is made into chips, the chips made at different positions have different performances, and the performance of the chip at the middle position of the wafer is better than that at the corners), the lower the working voltage can be.
Preferably, the monitoring module and the control module are integrated inside a CPU.
It can be understood that the CPU itself can be used as a control module for data processing, and with the development of chip technology, the monitoring module is generally directly integrated inside the CPU.
Preferably, the power supply module is a voltage converter.
It can be understood that the power supply module is used for providing an operating voltage for the CPU, and may be a voltage converter, such as a commonly used DC chip, assuming that the power adapter provides a 12V voltage supply, while the CPU needs 1.0V and 3.3V voltage supplies, and the 12V voltage may be converted into 1.0V and 3.3V voltages needed by the CPU through the DC-DC conversion chip.
In another preferred embodiment, referring to fig. 2, it is a block diagram of another preferred embodiment of the CPU power consumption management apparatus provided in the present invention, the apparatus further includes a clock module 500 and a phase-locked loop module 600;
the control module 200 is specifically configured to obtain the current optimal operating frequency of the power supply module 400 according to the real-time status information;
the clock module 500 and the phase-locked loop module 600 are configured to generate a corresponding synchronous clock signal according to the current optimal operating frequency and send the synchronous clock signal to the power supply module 400; wherein the synchronous clock signal is the frequency control signal.
Specifically, with reference to the above embodiment, the control module calculates the current optimal operating frequency of the power supply module supplying power to the CPU through an internal algorithm according to the real-time state information of the CPU, and the clock module and the phase-locked loop module generate corresponding synchronous clock signals according to the current optimal operating frequency of the power supply module and send the synchronous clock signals to the power supply module, where the synchronous clock signals are the frequency control signals, so that the power supply module adjusts the operating frequency of the power supply module according to the synchronous clock signals.
It should be noted that, a synchronous clock signal with a specific frequency is output through the clock module and the phase-locked loop module, and at this time, the power supply module needs to support a control mode of clock input, so that the power supply module can adjust the operating frequency to a proper value through the received synchronous clock signal with the specific frequency.
Preferably, the clock module is a clock oscillator.
Preferably, the clock module and the phase-locked loop module are integrated inside the CPU.
It can be understood that, with the development of chip technology, a clock module and a phase-locked loop module are generally directly integrated inside a CPU, that is, a clock oscillator and a phase-locked loop circuit are provided inside the CPU, through these circuit modules, the chip can output clocks with different frequencies, and the phase-locked loop circuit can play a role in stabilizing the output frequency.
Referring to fig. 3, a schematic block diagram of voltage regulation of a CPU power consumption management apparatus according to the present invention is shown, and a regulation process of an output voltage of a power supply module (DC chip) is specifically described with reference to the above embodiments:
the ADC/DAC module on the right in fig. 3 is connected to a power supply module of the CPU, i.e., a DC chip, via a resistor Rdac, according to kirchhoff's current law, Ia + Im is Ib, VFB is a reference voltage of the DC chip, VFB does not change according to characteristics of the DC chip, Ib does not change after Rbot is selected, Im increases when Vm voltage increases, Ia decreases according to Ia + Im is Ib, and meanwhile, in combination with Vout1 being VFB + Ia Rtop, Vout1 decreases, i.e., voltage Vout of the DC chip decreases.
It should be noted that the ADC/DAC module is used for converting digital signals and analog signals into each other, for example, the ADC/DAC module supplying power to the CPU is 1.8V, and the ADC/DAC module is 10bit, so that the ADC can output the control voltage with accuracy of 1800/1024, where 1024 is a power of 10 of 2, and is about 1.76 mV. After the power-on start, the ADC/DAC module firstly traverses 0 to 1023 steps from high to low (from the perspective of algorithm and efficiency, the step may be 5%, so only 20 times are needed), counts register values (digital values) that need to be set when each DAC outputs different voltages, and after obtaining the minimum working voltage that the CPU can work, knows how to set the DAC register through the table that the ADC/DAC module has just traversed and tried to maintain, thereby outputting the minimum working voltage and realizing voltage regulation.
The distribution adjustment of the voltage can be realized through the ADC/DAC module, and the ADC/DAC modules with different digits can achieve different control accuracies.
Referring to fig. 4, a schematic block diagram of the frequency adjustment of the CPU power consumption management apparatus provided in the present invention is shown, and the adjustment process of the operating frequency of the power supply module (DC chip) is specifically described with reference to the above embodiment:
after the power-on is started, parameter information is obtained through a monitoring module; the CPU can obtain the lowest working voltage of the CPU and the working frequency of the external DC chip according to the parameter information, the software algorithm, and the table lookup (since the whole board DC chip may have more than 1 path, the CPU may output multiple paths of different clock frequencies, and interface different DC chips, the second path shown in fig. 4 is optional); the working voltage of the CPU is regulated through an ADC/DAC module, which is not described again; a phase-locked loop and a clock module inside the CPU can output a clock CLK _ REF with a specific frequency, namely the working frequency value of an external DC chip; the external DC chip needs to support a clock input control mode, and the working frequency of the DC chip is adjusted to a proper value through a clock provided by the CPU; in fig. 4, the resistors connected in series between the CPU and the DC chip play a role in limiting current and regulating voltage, and can regulate the resistance value according to actual conditions.
To sum up, the CPU power consumption management apparatus provided in the embodiment of the present invention has the following beneficial effects:
(1) compared with the traditional single fixed power supply voltage system, the power consumption of the CPU can be reduced, the stability of the CPU is improved, and the energy is saved; for example, without the technical scheme provided by the embodiment of the invention, the voltage at which all the IC Core voltages can normally work needs to be set at 1.0-1.05V, but by using the technical scheme provided by the embodiment of the invention, the IC Core can dynamically adjust the working voltage between 0.85-0.93V according to the chip process (good chip working voltage can be lower than poor chip working voltage), the ambient temperature (high temperature working voltage can be reduced), the dynamic load (load is low, voltage can be reduced), and the like, and the power consumption of the CPU can be obviously reduced due to the large Core voltage;
(2) the control process is automatically adjusted without manual intervention;
(3) adjusting the working frequency of an external DC chip, and adopting different working frequencies for different loads to keep the conversion efficiency of the DC chip; meanwhile, for some systems with sensitive frequency, for example, when certain specific frequency interference exists, the DC working frequency can be adjusted to be out of the range, and the performance is optimized.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A CPU power consumption management device is characterized by comprising a monitoring module, a control module, an ADC/DAC module and a power supply module;
the monitoring module is used for acquiring real-time state information of the CPU at preset time intervals; the real-time state information comprises the lowest working voltage of the CPU, load current, the environment temperature of the CPU and the core temperature of the CPU;
the control module is used for generating a corresponding voltage control signal according to the real-time state information and sending the voltage control signal to the ADC/DAC module; the control module is also used for generating a corresponding frequency control signal according to the real-time state information and sending the frequency control signal to the power supply module;
the ADC/DAC module is used for adjusting the output voltage of the power supply module according to the received voltage control signal; wherein, the output voltage is the working voltage of the CPU;
the power supply module is used for adjusting the working frequency of the power supply module according to the received frequency control signal; the power supply module is also used for supplying electric energy to the CPU.
2. The CPU power consumption management device according to claim 1, wherein the control module is specifically configured to obtain a current optimal operating voltage of the CPU according to the real-time status information and a preset operating parameter table, and generate the voltage control signal according to the current optimal operating voltage and send the voltage control signal to the ADC/DAC module.
3. The CPU power consumption management device according to claim 1, wherein the control module is specifically configured to obtain a current optimal operating frequency of the power supply module according to the real-time status information and a preset operating parameter table, and generate the frequency control signal according to the current optimal operating frequency and send the frequency control signal to the power supply module.
4. The CPU power consumption management device of claim 1, wherein the monitoring module and the control module are integrated within a CPU.
5. The CPU power consumption management device of claim 1, wherein the power supply module is a voltage converter.
6. The CPU power consumption management apparatus of claim 1, wherein the apparatus further comprises a clock module and a phase locked loop module;
the control module is specifically used for acquiring the current optimal working frequency of the power supply module according to the real-time state information;
the clock module and the phase-locked loop module are used for generating corresponding synchronous clock signals according to the current optimal working frequency and sending the synchronous clock signals to the power supply module; wherein the synchronous clock signal is the frequency control signal.
7. The CPU power consumption management device of claim 6, wherein the clock module is a clock oscillator.
8. The CPU power consumption management device of claim 6 or 7, wherein the clock module and the phase locked loop module are integrated inside a CPU.
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| CN110703898A (en) * | 2019-09-06 | 2020-01-17 | 无锡江南计算技术研究所 | Dynamic management system and method for processor power consumption based on periodic query and interrupt |
| CN111984109A (en) * | 2020-08-05 | 2020-11-24 | 华东计算技术研究所（中国电子科技集团公司第三十二研究所） | Central processing unit frequency modulation method, system and medium based on substrate management controller |
| CN112083752A (en) * | 2020-09-03 | 2020-12-15 | 索尔思光电（成都）有限公司 | Optical transceiving system, module and method based on self-adaptive voltage regulation |
| CN113641550B (en) * | 2021-06-16 | 2024-03-22 | 无锡江南计算技术研究所 | Processor power consumption management and control method and device |
| CN115903976B (en) * | 2022-11-01 | 2023-10-27 | 广州鸿博微电子技术有限公司 | Digital integrated circuit power consumption control method, device, equipment and storage medium |
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| US8671413B2 (en) * | 2010-01-11 | 2014-03-11 | Qualcomm Incorporated | System and method of dynamic clock and voltage scaling for workload based power management of a wireless mobile device |
| JP5870935B2 (en) * | 2011-01-20 | 2016-03-01 | 日本電気株式会社 | Control system |
| CN102955547A (en) * | 2011-08-17 | 2013-03-06 | 鸿富锦精密工业（深圳）有限公司 | Power matching system |
| US9990024B2 (en) * | 2015-09-09 | 2018-06-05 | Qualcomm Incorporated | Circuits and methods providing voltage adjustment as processor cores become active based on an observed number of ring oscillator clock ticks |
| CN207882849U (en) * | 2018-03-06 | 2018-09-18 | 深圳市视纬通科技有限公司 | One kind is based on automatically controlling CPU voltage follower circuits |
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