CN109445545A - System fan control method, system and computer readable storage medium - Google Patents
System fan control method, system and computer readable storage medium Download PDFInfo
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- CN109445545A CN109445545A CN201811069537.8A CN201811069537A CN109445545A CN 109445545 A CN109445545 A CN 109445545A CN 201811069537 A CN201811069537 A CN 201811069537A CN 109445545 A CN109445545 A CN 109445545A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000003860 storage Methods 0.000 title claims abstract description 15
- 238000001514 detection method Methods 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 5
- 238000004590 computer program Methods 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 231100000572 poisoning Toxicity 0.000 description 2
- 230000000607 poisoning effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
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- 238000012360 testing method Methods 0.000 description 1
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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
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
Abstract
The invention provides a system fan control method, a system and a computer readable storage medium, comprising: step 1: periodically transmitting the heartbeat signal of the CPU module to the MCU module at a preset time interval; step 2: the MCU module judges whether the heartbeat signal of the CPU module meets a preset standard or not according to the received heartbeat signal of the CPU module, if so, the heartbeat signal is judged to be normal, the step 3 is carried out continuously, otherwise, the heartbeat signal is judged to be abnormal, and the step 4 is carried out continuously; and step 3: the MCU module reads the ground temperature information of the temperature sensor and then controls the fan to operate. When the MCU module detects that the heartbeat signal of the CPU module is abnormal, the temperature acquisition and the fan control can be carried out independently of the CPU module, and the CPU module is prevented from being burnt out due to overhigh temperature.
Description
Technical field
The invention patent relates to system fan control technical fields, and in particular, to system control method for fan, system and
Computer readable storage medium is related to a kind of safe system control method for fan in particular.
Background technique
Due to the fast development of scientific and technological communication industry, the application of information products is also popularized therewith, the electricity of especially big power consumption
Sub- communication equipment, it is also frequent to occur in daily life.The CPU module of many electronic communication equipments is fitted with fan,
And fan is controlled by fan governor and is blown to CPU, CPU heat dissipation is helped, CPU is operated normally, number is quickly handled
According to the case where especially high environment of temperature or CPU are often in operating at full capacity.
For electronic communication equipment, display, storage, CPU are three most important heat-producing devices, account for complete machine quantity of heat production
90% or more, with the increase of quantity of heat production, aging quickening, the performance decline of component, the serious system blue screen, dead of will lead to
The problems such as machine, chip are burnt out.Therefore the heat dissipation problem of computer is to first have to consider the problems of when designing CPU module.
Conventional CPU module obtains the temperature information near CPU by the temperature sensor in I2C bus all the way, then
It is radiated by the fan governor in another way I2C bus to adjust the revolving speed of fan.But for many CPU modules,
Temperature it is higher or its be in operate at full capacity in the case where, CPU module will appear stuck phenomenon, can not be effective in the short time
The revolving speed for adjusting fan cools down.
When CPU module is by poisoning intrusion, it is also possible to cause it that cannot normally control fan, cause CPU module due to
Temperature height is burned.
Patent document CN105736433A (application number: 201410756561.4) discloses a kind of control method for fan, dress
Set and terminal, the control method for fan: whether detection operating system gets control；When the operating system gets control
After system power, at predetermined time intervals, is sent to mainboard and read cpu temperature request；Rotation speed of the fan is controlled according to the cpu temperature.It should
Patent document is to consider that the SMBUS connected between reduction embedded controller and temperature sensor in hardware design is total
Line reads cpu temperature by preset storage region, controls rotation speed of the fan.CPU is not accounted under high load conditions
There is stuck phenomenon, may have little time to be written on cpu temperature in preset storage region, fan cannot effectively be adjusted by, which causing, turns
Speed.
Patent document CN106292963A (application number: 201610712025.3) discloses a kind of wind based on CPU power consumption
Fan regulation method, this method be test CPU required fan duty ratio under different operation power consumptions in development phase, and
The corresponding relationship of power consumption and duty ratio is written in BMC；In server operational process, BMC obtains the power consumption number of CPU in real time,
And corresponding PWM is exported to adjust the revolving speed of fan, it is ensured that air quantity required for CPU radiates.The patent document is only considered
Rotation speed of the fan is adjusted by the power consumption number of CPU, is not accounted under certain abnormal conditions, such as CPU is in heavy load situation
Under it is stuck, CPU power consumption value can not be obtained.
Patent document CN204009620U (application number: CN201420049735.9) discloses a kind of intelligent temperature control system,
The system comprises: master controller, hardware monitoring chip, temperature sensor and radiator fan；The hardware monitoring chip, temperature
Sensor is connect with the master controller；The radiator fan is connect with the hardware monitoring chip.The patent document is
In view of traditional mainboard fan control mode, master controller reads the temperature value in temperature sensor, then passes through hardware monitoring
The revolving speed of chip adjusting radiator fan.It is stuck in heavy load situations not account for CPU module, can not normally read temperature
The case where degree, control fan.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of system control method for fan, system and meters
Calculation machine readable storage medium storing program for executing.
A kind of system control method for fan provided according to the present invention, comprising:
Step 1: the heartbeat signal of CPU module is periodically sent to MCU module with a prefixed time interval；
Step 2: enabling MCU module according to the heartbeat signal of the CPU module received, judge that the heartbeat signal of CPU module is
It is no to meet preset standard, if so, determining that heartbeat signal is normal, enters step 4 and continue to execute, otherwise, then determine heartbeat signal
It is abnormal, it enters step 3 and continues to execute；
Step 3: enabling MCU module read the temperature information of temperature sensor, MCU module is controlled according to the temperature information of reading
The operation of fan terminates process；
Step 4: enabling CPU module read the temperature information of temperature sensor, output fan control is instructed to MCU module, MCU
Fan control instructs the operation for controlling fan to module based on the received.
Preferably, the step 3 includes:
Step 3.1: enabling MCU module control data selector, MCU module is selected to read the temperature information of temperature sensor；
Step 3.2: disconnect the connection of MCU module and CPU module, MCU module according to the temperature information of temperature sensor, to
Fan control module sends fan control instruction；
Step 3.3: enabling fan control module according to the operation of the fan control instruction control fan received.
Preferably, the step 4 includes:
Step 4.1: enabling MCU module control data selector, CPU module is selected to read the temperature information of temperature sensor；
Step 4.2: enabling CPU module according to the temperature information of the temperature sensor of reading, export fan control and instruct to MCU
Module；
Step 4.3: enabling MCU module that the fan control received instruction is transmitted to fan control module；
Step 4.4: enabling fan control module according to the operation of the fan control instruction control fan received.
A kind of system fan control system provided according to the present invention, comprising: CPU module, temperature detecting module, MCU mould
Block, fan control module, data selector；
Temperature detecting module: by the detection temperature transition of CPU at digital quantity, temperature information is obtained；
CPU module: output heartbeat signal；According to the access path that data selector selects, obtained from temperature detecting module
Temperature information exports fan control instruction according to temperature information；
MCU module: receiving the heartbeat signal of CPU module, according to the heartbeat signal of CPU module, controls data selector and visits
Ask the access path of temperature detecting module, outgoing route selection instruction；
Data selector: according to the routing instructions received, selection accesses temperature detecting module also by CPU module
It is that temperature detecting module is accessed by MCU module；
MCU module: the access path selected according to data selector obtains temperature information from temperature detecting module, according to
Temperature information, output fan control instruction；The fan control instruction from CPU module received is transmitted to fan control mould
Block；
Fan control module: it is instructed according to the fan control received, controls the operation of fan.
Preferably, the temperature detecting module includes: one or more groups of temperature sensors；
The detection temperature transition of CPU module is digital quantity, output temperature information by the temperature sensor.
Preferably, the CPU module includes: host CPU, memory, storage unit；
The MCU module includes: single-chip microcontroller.
Preferably, the fan control module includes: control unit, fan.
A kind of computer readable storage medium for being stored with computer program provided according to the present invention, the computer journey
The step of system control method for fan described in any of the above embodiments is realized when sequence is executed by processor.
Compared with prior art, the present invention have it is following the utility model has the advantages that
1, when MCU module detects CPU module heartbeat signal exception, temperature acquisition can be carried out independently of CPU module
And fan control, avoid CPU module from being burned because temperature is excessively high.
2, the I2C0 of CPU module or the I2C0 of MCU module is selected to be connected to temperature sensor using data selector
I2C, avoid multiple I2C equipment and be connected on same bus, since bus is hung dead phenomenon by some equipment failure.
3, MCU module uses the single-chip microcontroller of low-power consumption, and power consumption is small, at low cost.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is according to system fan control system block diagram representation provided by the invention.
Fig. 2 is the flow diagram according to system control method for fan provided by the invention.
Fig. 3 is the flow diagram according to the step S103 of system control method for fan provided by the invention
Fig. 4 is the flow diagram according to the step S104 of system control method for fan provided by the invention
Fig. 5 is the MCU module software flow schematic diagram in preference according to the present invention.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
A kind of system control method for fan provided according to the present invention, comprising:
Step S101: the heartbeat signal of CPU module is periodically sent to MCU module with a prefixed time interval；Into
One step, heartbeat signal is transmitted to MCU module by GPIO by CPU module.
Step S102: MCU module is enabled to judge the heartbeat signal of CPU module according to the heartbeat signal of the CPU module received
Whether meet preset standard, if so, determining that heartbeat signal is normal, enters step S104 and continue to execute, otherwise, then determine heartbeat
Abnormal signal enters step S103 and continues to execute；
Step S103: MCU module is enabled to read the temperature information of temperature sensor, MCU module is according to the temperature information of reading
The operation of fan is controlled, process is terminated；
Step S104: enabling CPU module read the temperature information of temperature sensor, and output fan control is instructed to MCU module,
Fan control instructs the operation for controlling fan to MCU module based on the received.
Specifically, the step S103 includes:
Step S301: enabling MCU module control data selector, and MCU module is selected to read the temperature information of temperature sensor；
Further, data selector selection with passing through the I2C bus reading temperature sensor of MCU module temperature information；Further
Ground passes through the I2C0 of MCU module with reading temperature sensor temperature information.
Step S302: disconnecting the connection of MCU module and CPU module, MCU module according to the temperature information of temperature sensor,
Fan control instruction is sent to fan control module；Further, the connection of the I2C1 of MCU module and CPU module is disconnected；MCU
Module is connected to fan control module by I2C2；Further, MCU module sends wind to fan control module by I2C2
Fan control instruction.
Step S303: enable fan control module according to the operation of the fan control instruction control fan received.
Specifically, the step S104 includes:
Step S401: enabling MCU module control data selector, and CPU module is selected to read the temperature information of temperature sensor；
Further, data selector with passing through the I2C bus reading temperature sensor of CPU module temperature information；Further, lead to
With crossing the I2C0 reading temperature sensor of CPU module temperature information.
Step S402: enabling CPU module according to the temperature information of the temperature sensor of reading, export fan control instruct to
MCU module；Further, CPU module is transmitted fan control by I2C1 and is instructed to MCU module.
Step S403: enable MCU module that the fan control received instruction is transmitted to fan control module；
Step S404: enable fan control module according to the operation of the fan control instruction control fan received.
The step of system fan control system provided by the invention, the system control method for fan that can be given through the invention
Process is realized.The system control method for fan can be interpreted as the system fan control system by those skilled in the art
A preference.
A kind of system fan control system provided according to the present invention, comprising: CPU module, temperature detecting module, MCU mould
Block, fan control module, data selector；
Temperature detecting module: by the detection temperature transition of CPU at digital quantity, temperature information is obtained；
CPU module: output heartbeat signal；According to the access path that data selector selects, obtained from temperature detecting module
Temperature information exports fan control instruction according to temperature information；
MCU module: receiving the heartbeat signal of CPU module, according to the heartbeat signal of CPU module, controls data selector and visits
Ask the access path of temperature detecting module, outgoing route selection instruction；
Data selector: according to the routing instructions received, selection accesses temperature detecting module also by CPU module
It is that temperature detecting module is accessed by MCU module；
MCU module: the access path selected according to data selector obtains temperature information from temperature detecting module, according to
Temperature information, output fan control instruction；The fan control instruction from CPU module received is transmitted to fan control mould
Block；
Fan control module: it is instructed according to the fan control received, controls the operation of fan.
Specifically, the temperature detecting module includes: one or more groups of temperature sensors；
The detection temperature transition of CPU module is digital quantity, output temperature information by the temperature sensor.
Specifically, the CPU module includes: host CPU, memory, storage unit；
The MCU module includes: single-chip microcontroller.
Specifically, the fan control module includes: control unit, fan.
A kind of computer readable storage medium for being stored with computer program provided according to the present invention, the computer journey
The step of system control method for fan described in any of the above embodiments is realized when sequence is executed by processor.
Embodiment 1:
As shown in Figure 1, the invention patent includes five modules on mock-up:
CPU module includes host CPU, memory and storage unit, is main power consumption heat production module；Temperature detecting module includes
One group of temperature sensor, temperature sensor can be by the temperature transitions near CPU at digital quantity, and CPU module and MCU module can be with
Temperature information is obtained by I2C bus；Data selector is the I2C of CPU for selecting the I2C bus of cut-in temperature sensor
The I2C bus of bus or MCU.MCU module is by the singlechip group of low-power consumption at for controlling the channel choosing of data selector
It selects, receives CPU heartbeat signal and data, and communicate with fan control module by I2C bus；Fan control module includes wind
Control unit and fan are fanned, the control instruction of MCU module is received.
Under normal circumstances, MCU module controls data selector, and the I2C0 of CPU module is selected to access temperature sensor,
CPU module is connected by I2C1 with GPIO with MCU module.MCU module is connected to fan control module by I2C2.MCU module
The data that CPU module is transmitted by I2C1 pass through fan control module by I2C2 and control fan.GPIO is responsible for
The heartbeat signal of real-time transmission CPU module is to MCU module.
When MCU module detects the heartbeat signal exception, data selector is controlled, selects the I2C0 of MCU module visiting
Ask temperature sensor, the connection of cutting and the I2C1 of CPU module controls fan according to the temperature of temperature sensor is independent
System.
MCU module software flow pattern as shown in Fig. 2, program after commencing execution, MCU module pass through GPIO monitor CPU mould
Whether the heartbeat signal of block is normal；
If the heartbeat signal of CPU module is normal, MCU module selects CPU module by SEL signal control data selector
I2C0, CPU module reads the temperature information of temperature sensor by I2C0, and CPU module passes through the data for controlling fan
I2C1 is transmitted to MCU module, and MCU module controls fan according to the data that CPU module transmits.
If the heartbeat signal of CPU module is abnormal, MCU module selects MCU module by SEL signal control data selector
I2C0, MCU module reads the temperature information of temperature sensor by I2C0, and MCU module is according to the temperature of temperature sensor
It is independent that fan is controlled.
Embodiment 2:
Under normal circumstances, MCU module selects the I2C0 of CPU module to access temperature by SEL signal control data selector
Sensor is spent, temperature parameter is obtained.The parameter for controlling fan is sent to MCU module, MCU mould by I2C1 bus by CPU module
Root tuber controls fan by the fan control module in I2C2 bus according to the parameter of acquisition.
It when CPU module since temperature is excessively high, can not work normally or when by poisoning intrusion, the heartbeat letter of CPU module
Number it will appear exception.The heartbeat signal of the detection CPU module of MCU module meeting timing, when the heartbeat signal for detecting CPU module is different
Chang Shi selects the I2C0 of MCU module to access temperature sensor, cutting and CPU module by SEL signal control data selector
I2C1 connection, fan is controlled according to the temperature of temperature sensor is independent.
One skilled in the art will appreciate that in addition to realizing system provided by the invention in a manner of pure computer readable program code
It, completely can be by the way that method and step be carried out programming in logic come so that provided by the invention other than system, device and its modules
System, device and its modules are declined with logic gate, switch, specific integrated circuit, programmable logic controller (PLC) and insertion
The form of controller etc. realizes identical program.So system provided by the invention, device and its modules may be considered that
It is a kind of hardware component, and the knot that the module for realizing various programs for including in it can also be considered as in hardware component
Structure；It can also will be considered as realizing the module of various functions either the software program of implementation method can be Hardware Subdivision again
Structure in part.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (8)
1. a kind of system control method for fan characterized by comprising
Step 1: the heartbeat signal of CPU module is periodically sent to MCU module with a prefixed time interval；
Step 2: enabling MCU module according to the heartbeat signal of the CPU module received, judge whether the heartbeat signal of CPU module accords with
Preset standard is closed, if so, determining that heartbeat signal is normal, 4 is entered step and continues to execute, otherwise, then determines heartbeat signal exception,
3 are entered step to continue to execute；
Step 3: enabling MCU module read the temperature information of temperature sensor, MCU module controls fan according to the temperature information of reading
Operation, terminate process；
Step 4: enabling CPU module read the temperature information of temperature sensor, output fan control is instructed to MCU module, MCU module
The operation of fan control instruction control fan based on the received.
2. system according to claim 1 control method for fan, which is characterized in that the step 3 includes:
Step 3.1: enabling MCU module control data selector, MCU module is selected to read the temperature information of temperature sensor；
Step 3.2: disconnecting the connection of MCU module and CPU module, MCU module is according to the temperature information of temperature sensor, to fan
Control module sends fan control instruction；
Step 3.3: enabling fan control module according to the operation of the fan control instruction control fan received.
3. system according to claim 1 control method for fan, which is characterized in that the step 4 includes:
Step 4.1: enabling MCU module control data selector, CPU module is selected to read the temperature information of temperature sensor；
Step 4.2: enabling CPU module according to the temperature information of the temperature sensor of reading, export fan control and instruct to MCU mould
Block；
Step 4.3: enabling MCU module that the fan control received instruction is transmitted to fan control module；
Step 4.4: enabling fan control module according to the operation of the fan control instruction control fan received.
4. a kind of system fan control system characterized by comprising CPU module, temperature detecting module, MCU module, fan
Control module, data selector；
Temperature detecting module: by the detection temperature transition of CPU at digital quantity, temperature information is obtained；
CPU module: output heartbeat signal；According to the access path that data selector selects, temperature is obtained from temperature detecting module
Information exports fan control instruction according to temperature information；
MCU module: receiving the heartbeat signal of CPU module, according to the heartbeat signal of CPU module, controls data selector access temperature
Spend the access path of detection module, outgoing route selection instruction；
Data selector: according to the routing instructions received, selection accesses temperature detecting module by CPU module and still leads to
Cross MCU module access temperature detecting module；
MCU module: the access path selected according to data selector obtains temperature information from temperature detecting module, according to temperature
Information, output fan control instruction；The fan control instruction from CPU module received is transmitted to fan control module；
Fan control module: it is instructed according to the fan control received, controls the operation of fan.
5. system fan control system according to claim 4, which is characterized in that the temperature detecting module includes: one
Group or multiple groups temperature sensor；
The detection temperature transition of CPU module is digital quantity, output temperature information by the temperature sensor.
6. system fan control system according to claim 4, which is characterized in that the CPU module includes: host CPU, interior
It deposits, storage unit；
The MCU module includes: single-chip microcontroller.
7. system fan control system according to claim 4, which is characterized in that the fan control module includes: control
Unit processed, fan.
8. a kind of computer readable storage medium for being stored with computer program, which is characterized in that the computer program is located
The step of reason device realizes system control method for fan described in any one of claims 1 to 3 when executing.
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| CN201811069537.8A CN109445545A (en) | 2018-09-13 | 2018-09-13 | System fan control method, system and computer readable storage medium |
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| CN201811069537.8A CN109445545A (en) | 2018-09-13 | 2018-09-13 | System fan control method, system and computer readable storage medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112696373A (en) * | 2019-10-23 | 2021-04-23 | 中兴通讯股份有限公司 | Fan speed regulating system and method |
| CN114268077A (en) * | 2021-11-26 | 2022-04-01 | 广州芯德通信科技股份有限公司 | OLT equipment temperature overheating protection circuit and method |
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| CN105221467A (en) * | 2015-11-16 | 2016-01-06 | 姚焕根 | Rotation speed of the fan adjust system and method |
| CN107023504A (en) * | 2017-06-02 | 2017-08-08 | 郑州云海信息技术有限公司 | A kind of fan control system and control method based on BMC |
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| CN112696373A (en) * | 2019-10-23 | 2021-04-23 | 中兴通讯股份有限公司 | Fan speed regulating system and method |
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Application publication date: 20190308 |