CN113543583A - Equipment heat dissipation method - Google Patents
Equipment heat dissipation method Download PDFInfo
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- CN113543583A CN113543583A CN202110629361.2A CN202110629361A CN113543583A CN 113543583 A CN113543583 A CN 113543583A CN 202110629361 A CN202110629361 A CN 202110629361A CN 113543583 A CN113543583 A CN 113543583A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 18
- 230000033228 biological regulation Effects 0.000 claims abstract description 43
- 230000007613 environmental effect Effects 0.000 claims abstract description 27
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 238000013500 data storage Methods 0.000 claims description 36
- 238000005192 partition Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20209—Thermal management, e.g. fan control
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The embodiment of the application provides an equipment heat dissipation method, wherein a speed regulation mode, a temperature point of a heating gear, a temperature point of a cooling gear and a speed regulation gear corresponding to the temperature point of the heating gear and the temperature point of the cooling gear are prestored in a controller; selecting a corresponding speed regulation mode according to the state of a write register in the controller; if the current speed is in a speed regulation mode before the controller is started, periodically acquiring the environmental temperature value of the chip; storing the acquired chip environment temperature value into a data memory, and reading the chip environment temperature value stored in the data memory when the stored chip environment temperature value data reaches a set condition; and comparing the data processed by the acquired chip environment temperature value with the prestored temperature point of the heating gear and the temperature point of the cooling gear, and outputting a fan gear shifting control instruction according to a judgment result. According to the embodiment of the application, the rotating speed of the fan is adjusted according to the environmental temperature value of the chip before the controller is started, and the problems of poor equipment reliability and high starting power consumption caused by the fixed rotating speed of the fan are solved.
Description
Technical Field
The application relates to the technical field of communication equipment, in particular to an equipment heat dissipation method.
Background
As the inventor knows, the performance of the device is more and more required, and the power consumption is more and more increased, which results in more and more requirements for heat dissipation performance. The heat dissipation scheme of the equipment mainly realizes gear speed regulation and linear speed regulation through software control. But before the software is not started, the fan dissipates heat at a default fixed rotating speed after the equipment is powered on. When the equipment is still at low temperature, the rotating speed of the fan is higher, the starting temperature of the equipment is lower, and when the equipment is at high temperature, the rotating speed of the fan is lower, the starting temperature of the equipment is higher, the reliability of the equipment is influenced, and the starting power consumption of the equipment is higher.
Disclosure of Invention
In order to overcome the problems in the related art, the application provides a device heat dissipation method.
According to the equipment heat dissipation method provided by the embodiment of the application, a speed regulation mode, a temperature point of a heating gear, a temperature point of a cooling gear and speed regulation gears corresponding to the temperature point of the heating gear and the temperature point of the cooling gear are prestored in a controller, wherein the speed regulation mode comprises a speed regulation mode before the controller is started and a speed regulation mode after the controller is started;
selecting a corresponding speed regulation mode according to the state of a write register in the controller;
if the current speed is in a speed regulation mode before the controller is started, periodically acquiring the environmental temperature value of the chip;
storing the acquired chip environment temperature value into a data memory, and reading the chip environment temperature value stored in the data memory when the stored chip environment temperature value data reaches a set condition;
and comparing the data processed by the acquired chip environment temperature value with the prestored temperature point of the heating gear and the temperature point of the cooling gear, and outputting a fan gear shifting control instruction according to a judgment result.
Preferably, the chip ambient temperature value includes an air inlet temperature and a hot spot temperature of the device.
Preferably, storing the collected chip environment temperature value into the data storage includes: and dividing the data memory into a first data memory area and a second data memory area, and storing the acquired environmental temperature values of the chip according to a partition mode.
Further, a method of reading a chip ambient temperature value stored in a data memory when the stored chip ambient temperature value data reaches a set condition, includes:
storing the acquired environmental temperature value of the chip into a first data storage area, and setting a first set when the first data storage area is full;
informing and reading the chip environment temperature value in the first data storage area, and storing the subsequently acquired chip environment temperature value in the second data storage area;
clearing the set first set after reading the chip environment temperature value in the first data storage area;
setting a second set when the second data storage area is full;
informing and reading the chip environment temperature value of the second data storage area, and storing the subsequently acquired chip environment temperature value into the first data storage area;
and clearing the set second set after reading the chip environment temperature value of the second data storage area.
Preferably, the reading speed of the ambient temperature value of the chip is faster than the storing speed of the ambient temperature value of the chip.
Preferably, there are M temperature points of the pre-stored temperature-increasing gears corresponding to M speed-increasing gears in the speed-adjusting gears, and N temperature points of the pre-stored temperature-decreasing gears corresponding to N speed-decreasing gears in the speed-adjusting gears.
Preferably, storing the collected chip environment temperature value into the data storage includes: and storing the environmental temperature values of the chips according to the sequential addresses.
Further, a method of reading a chip ambient temperature value stored in a data memory when the stored chip ambient temperature value data reaches a set condition, includes:
storing the environmental temperature value of the chip in a set first time, recording the stored initial address as D1, and recording the stored stop address D2 when the set first time is reached;
storing subsequent chip environment temperature values within a set second time, recording the stored initial address as D3, and recording the stored deadline time D4 when the set second time is reached;
reading the environmental temperature values of the chips D1-D2 within a set second time;
and continuously storing the chip environment temperature value within the set third time, recording the stored initial address as D5, recording the stored deadline time D6 within the set third time, and reading the chip environment temperature values of D3-D4.
Preferably, the acquisition of the temperature-increasing gear temperature point and the temperature-decreasing gear temperature point which are prestored comprises:
measuring the ambient temperature values of the chips and the corresponding power consumption values of the chips at different fan rotating speeds at normal temperature in the starting process of the controller;
and determining a temperature point of a cooling gear and a temperature point of a heating gear according to the obtained environmental temperature value and the power consumption value of the chip, and determining a corresponding speed-adjusting gear.
Preferably, if the controller is in a speed regulation mode after being started, the fan is regulated by adopting a software speed regulation mode, and the software speed regulation mode is linear speed regulation or multi-gear speed regulation.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
according to the embodiment of the application, the rotating speed of the fan is adjusted according to the environmental temperature value of the chip before the controller is started, and the problems of poor equipment reliability and high starting power consumption caused by the fixed rotating speed of the fan are solved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments consistent with the present application and together with the application, serve to explain the principles of the application.
FIG. 1 is a schematic flow chart of an embodiment of the present application;
FIG. 2 is a schematic flow chart illustrating an embodiment 1 of accessing ambient temperature values of a chip according to the present application;
FIG. 3 is a flowchart illustrating the ambient temperature value accessing embodiment 2 of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
To the best of the inventor's knowledge, the equipment startup process is divided into the following three phases, including a controller non-startup phase and a controller startup phase. The controller may be a logic controller, such as a CPLD, or a single chip microcomputer. The application takes a logic controller as an example for explanation, the controller non-starting phase comprises a boot starting phase and a Kernel starting phase, and the controller starting phase mainly refers to a Commware starting phase or a software starting phase. About 5-10 minutes is required from the start of the power-on of the device to the start of the controller. If the fan speed is fixed at this stage, the failure to dynamically adjust the external temperature will affect the reliability of the device.
In order to solve the problems in the background art, an embodiment of the present application provides an apparatus heat dissipation method, including:
101: the method comprises the steps of pre-storing a speed regulation mode, a temperature rise gear temperature point, a temperature fall gear temperature point and speed regulation gears corresponding to the temperature rise gear temperature point and the temperature fall gear temperature point in a controller, wherein the speed regulation mode comprises a speed regulation mode before the controller is started and a speed regulation mode after the controller is started.
And when the detected temperature point reaches or is greater than the temperature point of the heating gear, correspondingly adjusting the fan to the speed-up gear. And when the detected temperature point reaches the temperature point of the cooling gear, correspondingly adjusting the fan to the cooling gear.
And if the temperature of the heating gear is M, M corresponding speed-up gears are M, wherein M is 1,2,3 … …, and M is a natural number. And if the temperature points of the cooling gear are N, the corresponding speed reduction gears are N, wherein N is 1,2,3 … …, and N is a natural number.
In the embodiment of the application, the pre-stored temperature points of the temperature raising gear and the temperature lowering gear are obtained by measuring the ambient temperature values of the chip and the corresponding power consumption values of the chip at different fan rotating speeds at normal temperature in the starting process of the controller;
and determining a temperature point of a cooling gear and a temperature point of a heating gear according to the obtained environmental temperature value and the power consumption value of the chip, and determining a corresponding speed-adjusting gear.
103: and selecting a corresponding speed regulation mode through the state of a write register in the controller.
105: and if the current speed regulation mode before the controller is started is obtained, periodically acquiring the environmental temperature value of the chip.
The ambient temperature value of the chip can acquire the temperature of a hot spot, and in order to ensure the accuracy, the temperature of an air inlet of the equipment can be acquired on the basis of the temperature of the hot spot.
The hot spot temperature refers to the temperature of the leeward position of a key heating chip in the equipment and is usually also tested by a sensor.
107: and storing the acquired chip environment temperature value into a data memory, and reading the chip environment temperature value stored in the data memory when the stored chip environment temperature value data reaches a set condition.
This application provides two related embodiments.
Example 1: the data storage is divided into a first data storage area and a second data storage area. Storing the acquired environmental temperature value of the chip into a first data storage area, and setting a first set when the first data storage area is full;
informing and reading the chip environment temperature value in the first data storage area, and storing the subsequently acquired chip environment temperature value in the second data storage area;
clearing the set first set after reading the chip environment temperature value in the first data storage area;
setting a second set when the second data storage area is full;
informing and reading the chip environment temperature value of the second data storage area, and storing the subsequently acquired chip environment temperature value into the first data storage area;
and clearing the set second set after reading the chip environment temperature value of the second data storage area.
And repeating the steps to realize the access of the data of the environmental temperature value of the chip.
Example 2: storing the environmental temperature values of the chips according to sequential addresses;
storing the environmental temperature value of the chip in a set first time, recording the stored initial address as D1, and recording the stored stop address D2 when the set first time is reached;
storing subsequent chip environment temperature values within a set second time, recording the stored initial address as D3, and recording the stored deadline time D4 when the set second time is reached;
reading the environmental temperature values of the chips D1-D2 within a set second time;
and continuously storing the chip environment temperature value within the set third time, recording the stored initial address as D5, recording the stored deadline time D6 within the set third time, and reading the chip environment temperature values of D3-D4.
And repeating the reading step to realize the access of the data of the environmental temperature value of the chip.
In the two embodiments, the reading speed of the ambient temperature value of the chip is faster than the storing speed of the ambient temperature value of the chip.
109: and comparing the data processed by the acquired chip environment temperature value with the prestored temperature point of the heating gear and the temperature point of the cooling gear, and outputting a fan gear shifting control instruction according to a judgment result.
The data processed by the acquired chip environment temperature value may be some single point data directly acquired, or may be an average value of some data blocks. For example, an average value or a smoothed value of the first data block or the second data block in the above data access method in embodiment 1. Because the data processing mode is many, it is not described herein again. It should be noted that, if the chip ambient temperature value includes the air inlet temperature and the hot spot temperature of the device, like such multidimensional data, data processing may be performed by using the above data access method, for example, to obtain two processed data, and the two processed data are determined by using two determination indexes. For example, if the temperature is lowered, both the indexes are required to be satisfied, and if the temperature is raised, only one index is required to be satisfied. Or may be processed by deriving a final processed data, for example, by a weighting algorithm.
In the embodiment of the application, if the average value of the environmental temperature values of the chip is greater than or equal to the temperature point of the heating gear, the fan is adjusted to the corresponding speed-up gear; and if the average value of the environmental temperature values of the chips is less than or equal to the temperature point of the cooling gear, adjusting the fan to the corresponding speed reduction gear.
111: if the controller is in the speed regulation mode after being started, the fan is regulated by adopting a software speed regulation mode, wherein the software speed regulation mode is linear speed regulation or multi-gear speed regulation.
All the above-mentioned embodiments refer to the directional terms such as upper, lower, left, right, front, rear, horizontal, vertical, left, right, etc., and the directional terms are used in the drawings.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.
Claims (10)
1. A method for dissipating heat from a device, comprising,
a speed regulation mode, a temperature rise gear temperature point, a temperature fall gear temperature point and speed regulation gears corresponding to the temperature rise gear temperature point and the temperature fall gear temperature point are prestored in the controller, wherein the speed regulation mode comprises a speed regulation mode before the controller is started and a speed regulation mode after the controller is started;
selecting a corresponding speed regulation mode according to the state of a write register in the controller;
if the current speed is in a speed regulation mode before the controller is started, periodically acquiring the environmental temperature value of the chip;
storing the acquired chip environment temperature value into a data memory, and reading the chip environment temperature value stored in the data memory when the stored chip environment temperature value data reaches a set condition;
and comparing the data processed by the acquired chip environment temperature value with the prestored temperature point of the heating gear and the temperature point of the cooling gear, and outputting a fan gear shifting control instruction according to a judgment result.
2. The apparatus heat dissipation method as claimed in claim 1, wherein the chip ambient temperature values include an air inlet temperature and a hot spot temperature of the apparatus.
3. The apparatus heat dissipation method of claim 1, wherein storing the collected chip environment temperature values in a data storage device comprises: and dividing the data memory into a first data memory area and a second data memory area, and storing the acquired environmental temperature value of the chip according to the partition mode.
4. The apparatus heat dissipation method of claim 3, wherein the method of reading the chip environment temperature value stored in the data storage when the stored chip environment temperature value data reaches the set condition comprises:
storing the acquired environmental temperature value of the chip into a first data storage area, and setting a first set when the first data storage area is full;
informing and reading the chip environment temperature value in the first data storage area, and storing the subsequently acquired chip environment temperature value in the second data storage area;
clearing the set first set after reading the chip environment temperature value in the first data storage area;
setting a second set when the second data storage area is full;
informing and reading the chip environment temperature value of the second data storage area, and storing the subsequently acquired chip environment temperature value into the first data storage area;
and clearing the set second set after reading the chip environment temperature value of the second data storage area.
5. The apparatus heat dissipation method according to claim 4, wherein the ambient temperature value of the chip is read faster than the ambient temperature value of the chip is stored.
6. The equipment heat dissipation method according to claim 1, wherein there are M pre-stored warm-up gear temperature points corresponding to M up-shifts in the speed-shifting gears, and N pre-stored cool-down gear temperature points corresponding to N down-shifts in the speed-shifting gears.
7. The apparatus heat dissipation method of claim 1, wherein storing the collected chip ambient temperature values in a data storage device comprises: and storing the environmental temperature values of the chips according to the sequential addresses.
8. The apparatus heat dissipation method of claim 7, wherein the method of reading the chip environment temperature value stored in the data storage when the stored chip environment temperature value data reaches the set condition comprises:
storing the environmental temperature value of the chip in a set first time, recording the stored initial address as D1, and recording the stored stop address D2 when the set first time is reached;
storing subsequent chip environment temperature values in a set second time, recording the stored starting address D3 as the set second time, and recording the stored cut-off time D4;
reading the environmental temperature values of the chips D1-D2 within a set second time;
and continuously storing the chip environment temperature value within the set third time, recording the stored initial address as D5, recording the stored deadline time D6 within the set third time, and reading the chip environment temperature values of D3-D4.
9. The device heat dissipation method according to claim 1, wherein the obtaining of the pre-stored temperature-raising range point and temperature-lowering range point comprises:
measuring the ambient temperature values of the chips and the corresponding power consumption values of the chips at different fan rotating speeds at normal temperature in the starting process of the controller;
and determining a temperature point of a cooling gear and a temperature point of a heating gear according to the obtained environmental temperature value and the power consumption value of the chip, and determining a corresponding speed-adjusting gear.
10. The device heat dissipation method according to claim 1, wherein if the current mode is a speed regulation mode after the controller is started, a software speed regulation mode is adopted for fan speed regulation, and the software speed regulation mode is linear speed regulation or multi-gear speed regulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110629361.2A CN113543583A (en) | 2021-06-07 | 2021-06-07 | Equipment heat dissipation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110629361.2A CN113543583A (en) | 2021-06-07 | 2021-06-07 | Equipment heat dissipation method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863881A (en) * | 2014-02-21 | 2015-08-26 | 中兴通讯股份有限公司 | Method and device for controlling fan rotating speed of electronic equipment |
| CN106455416A (en) * | 2016-08-29 | 2017-02-22 | 安徽皖通邮电股份有限公司 | Device for controlling electronic device fun starting noise |
| CN107503968A (en) * | 2017-09-22 | 2017-12-22 | 安徽皖通邮电股份有限公司 | A kind of temperature self-adaptation fan control device |
| CN110069118A (en) * | 2019-05-28 | 2019-07-30 | 丙申南京网络技术有限公司 | A kind of computer fan starting heat dissipation and temperature control equipment |
| CN112562779A (en) * | 2020-12-07 | 2021-03-26 | 苏州浪潮智能科技有限公司 | Solid state disk aging test device and method |
-
2021
- 2021-06-07 CN CN202110629361.2A patent/CN113543583A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863881A (en) * | 2014-02-21 | 2015-08-26 | 中兴通讯股份有限公司 | Method and device for controlling fan rotating speed of electronic equipment |
| CN106455416A (en) * | 2016-08-29 | 2017-02-22 | 安徽皖通邮电股份有限公司 | Device for controlling electronic device fun starting noise |
| CN107503968A (en) * | 2017-09-22 | 2017-12-22 | 安徽皖通邮电股份有限公司 | A kind of temperature self-adaptation fan control device |
| CN110069118A (en) * | 2019-05-28 | 2019-07-30 | 丙申南京网络技术有限公司 | A kind of computer fan starting heat dissipation and temperature control equipment |
| CN112562779A (en) * | 2020-12-07 | 2021-03-26 | 苏州浪潮智能科技有限公司 | Solid state disk aging test device and method |
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