CN110778520A - Fan speed regulating device and speed regulating method - Google Patents

Fan speed regulating device and speed regulating method Download PDF

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Publication number
CN110778520A
CN110778520A CN201911129021.2A CN201911129021A CN110778520A CN 110778520 A CN110778520 A CN 110778520A CN 201911129021 A CN201911129021 A CN 201911129021A CN 110778520 A CN110778520 A CN 110778520A
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CN
China
Prior art keywords
fan
controller
rotating speed
speed
information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911129021.2A
Other languages
Chinese (zh)
Inventor
周海森
刘尚军
尹晓双
邓治彬
蔡嵩
黄刚林
徐雪梅
王丽
陈思思
刘宇
贺灵
段先科
徐哲
梁睿
周水平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Institute Of Ship Communication (china Shipbuilding Industry Corp No 722 Institute)
722th Research Institute of CSIC
Original Assignee
Wuhan Institute Of Ship Communication (china Shipbuilding Industry Corp No 722 Institute)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan Institute Of Ship Communication (china Shipbuilding Industry Corp No 722 Institute) filed Critical Wuhan Institute Of Ship Communication (china Shipbuilding Industry Corp No 722 Institute)
Priority to CN201911129021.2A priority Critical patent/CN110778520A/en
Publication of CN110778520A publication Critical patent/CN110778520A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/30—Control parameters, e.g. input parameters
    • F05D2270/303—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/30—Control parameters, e.g. input parameters
    • F05D2270/304—Spool rotational speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/50—Control logic embodiments
    • F05D2270/54—Control logic embodiments by electronic means, e.g. electronic tubes, transistors or IC's within an electronic circuit

Abstract

The invention relates to the technical field of communication equipment heat dissipation, and provides a fan speed regulating device and a speed regulating method, wherein the fan speed regulating device comprises: a controller and a temperature detector for acquiring ambient temperature information; the controller is used for acquiring the environment temperature information and the rotating speed information of the fan and adjusting the rotating speed of the fan based on the environment temperature information and the rotating speed information. The fan speed regulating device regulates the rotating speed of the fan according to the temperature of the system, can greatly reduce the energy consumption of equipment, and has the advantages of high reliability, flexible control, equipment energy consumption saving and the like.

Description

Fan speed regulating device and speed regulating method
Technical Field
The invention relates to the technical field of communication equipment heat dissipation, in particular to a fan speed regulating device and a speed regulating method.
Background
Communication devices such as industrial switches and servers generate more heat when power is higher, resulting in increased device temperature. In order to ensure that the equipment operates at a relatively proper ambient temperature, a heat dissipation device is usually required to be designed to reduce the temperature of the equipment, so as to ensure the normal operation of the system, and a scheme of installing a heat dissipation fan is generally adopted.
The fans selected for use on the current communication equipment are all traditional direct current axial flow fans, only two terminals of a power line and a ground wire are provided, the functions of adjusting the rotating speed and feeding back the rotating speed are omitted, the system cannot acquire the running state of the fans in the running process, the functions of high-temperature early warning and fault warning are omitted, the equipment is inconvenient to maintain, in addition, the fans have dust accumulation in the running process of the system, the fans need to be maintained at irregular intervals, the fans belong to fragile parts in the communication system and need to be replaced when faults occur, and therefore the running state of the fans is particularly important to acquire.
Disclosure of Invention
Technical problem to be solved
In view of the technical defects and application requirements, the application provides a fan speed regulating device and a speed regulating method to solve the problem that the existing fan speed regulating device is low in heat dissipation efficiency.
(II) technical scheme
In order to solve the above problem, in a first aspect, the present invention provides a fan speed adjusting device, including: a controller and a temperature detector for acquiring ambient temperature information;
the controller is used for acquiring the environment temperature information and the rotating speed information of the fan and adjusting the rotating speed of the fan based on the environment temperature information and the rotating speed information.
The controller is connected with the fan signal through a fan driving circuit for realizing PWM level conversion.
The controller is connected with the fan signal through a rotating speed feedback circuit used for adjusting the amplitude of the output square wave of the fan.
The fan speed regulating device also comprises a buzzer connected with the controller through signals.
The fan speed regulating device further comprises an upper computer and a simulator, wherein the upper computer is in signal connection with the simulator, and the simulator is in signal connection with the controller.
The upper computer is connected with the controller through an RS232 level conversion circuit.
The fan speed regulating device further comprises a power supply for supplying power to the controller.
Wherein the power supply is electrically connected to the controller through a power circuit for converting a 12V DC power supply to a 3.3V DC power supply.
In a second aspect, the present invention further provides a speed adjusting method, including: the controller adjusts the rotating speed of the fan based on the environment temperature information sent by the temperature detector and the rotating speed information sent by the fan.
Wherein, still include: and the controller controls the buzzer to perform corresponding actions based on the environment temperature information and the preset environment temperature.
(III) advantageous effects
According to the fan speed regulating device and the speed regulating method, the temperature detector transmits the detected environment temperature information to the controller, the controller can acquire the rotating speed information of the fan, and the controller regulates the rotating speed of the fan based on the environment temperature information and the rotating speed information; when the acquired ambient temperature is higher than the preset temperature, the controller calculates the increment of the rotating speed according to the acquired rotating speed, namely, the rotating speed is increased on the basis of the existing rotating speed; when the acquired ambient temperature is lower than the preset temperature, the controller calculates the reduction amount of the rotating speed according to the acquired rotating speed, namely, the reduction is carried out on the basis of the existing rotating speed. The fan speed regulating device regulates the rotating speed of the fan according to the temperature of the system, can greatly reduce the energy consumption of equipment, and has the advantages of high reliability, flexible control, equipment energy consumption saving and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a fan speed regulating device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a power circuit provided by an embodiment of the invention;
FIG. 3 is a circuit diagram of a fan interface according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an RS232 level shift circuit according to an embodiment of the present invention;
wherein, 1, a controller; 2. a temperature detection circuit; 3. a fan; 4. a fan drive circuit; 5. a rotational speed feedback circuit; 6. a PC machine; 7. a simulator; 8. an RS232 level conversion circuit; 9. a power supply circuit; 10. a buzzer driving circuit; 11. a buzzer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
From energy-conserving angle, communication system is at the operation in-process, and ambient temperature is different, and the heat-sinking capability that needs is also different, in order to guarantee the steady operation of equipment under the high temperature environment, often just needs to choose for use powerful fan, must lead to the fact the waste of energy just at the present. Therefore, if the rotating speed of the fan can be adjusted according to the internal temperature of the equipment, and the heat dissipation capacity of the equipment is further adjusted, the power consumption of the fan in the equipment can be reduced, and the power consumption of the equipment is reduced. For the fan speed regulation cooling system with the temperature feedback function, the rotating speed can be regulated according to the ambient temperature, and the functions of fan fault warning and high-temperature early warning are realized. Compared with the traditional fan cooling system, the fan cooling system has the advantages of high reliability, flexibility in control and capability of saving system energy consumption.
Fig. 1 is a schematic structural diagram of a fan speed adjusting device according to an embodiment of the present invention, and as shown in fig. 1, the fan speed adjusting device according to the embodiment of the present invention includes: the controller 1 and the temperature detector are used for acquiring environmental temperature information;
the temperature detector and the fan 3 are in signal connection with the controller 1, and the controller 1 is used for acquiring environment temperature information and rotating speed information of the fan and adjusting the rotating speed of the fan based on the environment temperature information and the rotating speed information.
It should be noted that the controller is a mixed signal processor MSP430F5438A, the chip has high operation speed and operation accuracy, and has logic control and abundant peripheral units, thereby simplifying the hardware design of the system, reducing the design cost, and greatly improving the control performance of the system.
It can be understood that the temperature detection circuit 2 realizes the acquisition of the ambient temperature through the two-wire digital temperature sensor TMP75AIDGKT, and the temperature detection circuit 2 and the controller 1 realize the real-time acquisition of the ambient temperature through the IIC bus. I.e. the temperature detector may be a digital temperature sensor TMP75 AIDGKT. The fan can be a 4-wire brushless direct current speed regulation fan with the specification model of AD5012 UB-C7B.
In the embodiment of the invention, the temperature detector transmits the detected environment temperature information to the controller 1, the controller 1 can acquire the rotating speed information of the fan, and the controller 1 adjusts the rotating speed of the fan based on the environment temperature information and the rotating speed information; when the acquired ambient temperature is higher than the preset temperature, the controller 1 calculates the increment of the rotating speed according to the acquired rotating speed, namely, the rotating speed is increased on the basis of the existing rotating speed; when the acquired ambient temperature is lower than the preset temperature, the controller 1 calculates the reduction amount of the rotation speed based on the acquired rotation speed, that is, performs reduction based on the existing rotation speed. The fan speed regulating device regulates the rotating speed of the fan according to the temperature of the system, can greatly reduce the energy consumption of equipment, and has the advantages of high reliability, flexible control, equipment energy consumption saving and the like.
On the basis of the above-described embodiment, as shown in fig. 3, the controller 1 is signal-connected to the fan 3 through the fan drive circuit 4 for implementing level conversion of PWM.
In the embodiment of the invention, the fan is a 4-wire speed regulation fan and comprises a power supply pin VCC, a ground pin GND, a PWM speed regulation pin and an FG rotating speed feedback pin. The controller 1 outputs different duty ratios, and the rotating speed of the fan changes along with the change of the duty ratios. When the duty cycle is 100%, the fan reaches a maximum speed. The function of the fan drive circuit 4 is to perform level conversion of PWM and to provide a large drive current to the fan.
It will be appreciated that the speed of the fan may be adjusted by adjusting the duty cycle of the PWM, and the PWM output of the MSP430F5438A controller 1 is connected to the fan drive circuit 4, and the fan drive circuit 4 is connected to the PWM speed regulation pin of the fan.
On the basis of the above embodiment, the controller 1 is connected with the fan 3 through a rotating speed feedback circuit 5 for adjusting the amplitude of the output square wave of the fan.
In the embodiment of the invention, the CAP terminal of the MSP430F5438A controller 1 is connected to a rotating speed feedback circuit to obtain the rotating speed of the fan. The rotating speed feedback circuit is connected with an FG rotating speed feedback pin of the fan.
It will be appreciated that the speed feedback circuit 5 function regulates the amplitude of the square wave output by the fan, regulating the amplitude of the square wave input to the MSP430F5438A type controller 1 to a 3.3V level.
On the basis of the above embodiment, the fan speed regulating device further comprises a buzzer 11 in signal connection with the controller 1.
In the embodiment of the invention, the buzzer 11 is connected with the GPIO of the MSP430F5438A type controller 1 through the buzzer driving circuit 10, and when the fan fault or the ambient temperature is higher than the set temperature, the controller 1 drives the buzzer through the GPIO to realize the fan fault alarm and the high temperature alarm.
On the basis of the embodiment, the fan speed regulating device further comprises an upper computer and a simulator 7, wherein the upper computer is in signal connection with the simulator 7, and the simulator 7 is in signal connection with the controller 1.
In the embodiment of the invention, the JTAG interface of the MSP430F5438A type controller 1 is connected with an upper computer through an emulator for code writing. The upper computer can be a PC 6.
On the basis of the above embodiment, as shown in fig. 4, the upper computer is connected with the controller 1 through the RS232 level conversion circuit 8.
In the embodiment of the invention, the upper computer is connected with the serial communication interface SCIA of the MSP430F5438A type controller 1 through the RS232 level conversion circuit 8. The user can obtain the current fan running state of the system, the ambient temperature and other information, and the information is displayed on the upper computer in real time.
On the basis of the above embodiment, as shown in fig. 2, the fan speed control device further includes a power supply for supplying power to the controller 1.
In the embodiment of the present invention, the power supply is electrically connected to the controller 1 through the power supply circuit 9 for converting a 12V dc power supply into a 3.3V dc power supply.
It will be appreciated that the function of the power supply circuit 9 is to provide 3.3V power to the entire controller. The power chip selected in the power circuit 9 is a TPS56628 buck DCDC power supply. The power supply circuit 9 inputs a direct current source with a voltage range of 5-17V.
According to the fan speed regulating device provided by the embodiment of the invention, the mixed signal processor MSP430F5438A is selected as the controller used by the embodiment of the invention, the CAP capture unit of the controller is used for acquiring the rotating speed information of the fan, and the pulse width modulation unit of the controller can output PWM with different duty ratios, wherein the rotating speed of the fan with different duty ratios can change along with the change of the duty ratios.
The embodiment of the present invention further provides a speed adjusting method for the fan speed adjusting device provided in each of the above embodiments, including:
the controller adjusts the rotating speed of the fan based on the environment temperature information sent by the temperature detector and the rotating speed information sent by the fan.
In the embodiment of the invention, the temperature detector transmits the detected environment temperature information to the controller 1, the controller 1 can acquire the rotating speed information of the fan, and the controller 1 adjusts the rotating speed of the fan based on the environment temperature information and the rotating speed information; when the acquired ambient temperature is higher than the preset temperature, the controller 1 calculates the increment of the rotating speed according to the acquired rotating speed, namely, the rotating speed is increased on the basis of the existing rotating speed; when the acquired ambient temperature is lower than the preset temperature, the controller 1 calculates the reduction amount of the rotation speed based on the acquired rotation speed, that is, performs reduction based on the existing rotation speed. The speed regulation method can greatly reduce the energy consumption of equipment by regulating the rotating speed of the fan according to the temperature of the system, and has the advantages of high reliability, flexible control, energy consumption of energy-saving equipment and the like.
On the basis of the above embodiment, the method further includes: the controller controls the buzzer to perform corresponding actions based on the environment temperature information and the preset environment temperature.
In the embodiment of the invention, when the fan fails or the environmental temperature is higher than the preset environmental temperature, the controller 1 drives the buzzer through the GPIO to realize the fan failure alarm and the high temperature alarm.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A fan governor device, comprising: a controller and a temperature detector for acquiring ambient temperature information;
the controller is used for acquiring the environment temperature information and the rotating speed information of the fan and adjusting the rotating speed of the fan based on the environment temperature information and the rotating speed information.
2. The fan governor of claim 1, wherein the controller is connected to the fan signals via a fan drive circuit for performing level shifting of the PWM.
3. The fan governor of claim 1, wherein the controller is signally connected to the fan via a speed feedback circuit for adjusting the amplitude of the fan's output square wave.
4. A fan governor according to claim 1, and further comprising a buzzer in signal communication with the controller.
5. The fan speed regulating device of claim 1, further comprising an upper computer and a simulator, wherein the upper computer is in signal connection with the simulator, and the simulator is in signal connection with the controller.
6. The fan speed regulating device according to claim 5, wherein the upper computer is in signal connection with the controller through an RS232 level conversion circuit.
7. A fan speed regulation device as claimed in claim 1, further comprising a power supply for supplying power to the controller.
8. The fan governor of claim 7, wherein the power supply is electrically connected to the controller via a power circuit for converting 12V DC power to 3.3V DC power.
9. A method of regulating a speed of a fan speed regulating device according to any one of claims 1 to 8, comprising:
the controller adjusts the rotating speed of the fan based on the environment temperature information sent by the temperature detector and the rotating speed information sent by the fan.
10. A method of regulating speed according to claim 9, further comprising:
and the controller controls the buzzer to perform corresponding actions based on the environment temperature information and the preset environment temperature.
CN201911129021.2A 2019-11-18 2019-11-18 Fan speed regulating device and speed regulating method Pending CN110778520A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911129021.2A CN110778520A (en) 2019-11-18 2019-11-18 Fan speed regulating device and speed regulating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911129021.2A CN110778520A (en) 2019-11-18 2019-11-18 Fan speed regulating device and speed regulating method

Publications (1)

Publication Number Publication Date
CN110778520A true CN110778520A (en) 2020-02-11

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Application Number Title Priority Date Filing Date
CN201911129021.2A Pending CN110778520A (en) 2019-11-18 2019-11-18 Fan speed regulating device and speed regulating method

Country Status (1)

Country Link
CN (1) CN110778520A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115113664A (en) * 2022-06-27 2022-09-27 徐州徐工矿业机械有限公司 Heat dissipation and energy saving control system and control method for excavator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115113664A (en) * 2022-06-27 2022-09-27 徐州徐工矿业机械有限公司 Heat dissipation and energy saving control system and control method for excavator

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