CN105224047B - Fan, fan governor, electronic equipment and fan recognition methods - Google Patents
Fan, fan governor, electronic equipment and fan recognition methods Download PDFInfo
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- CN105224047B CN105224047B CN201410253840.9A CN201410253840A CN105224047B CN 105224047 B CN105224047 B CN 105224047B CN 201410253840 A CN201410253840 A CN 201410253840A CN 105224047 B CN105224047 B CN 105224047B
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Abstract
The embodiment of the present invention provides a kind of fan, fan governor, electronic equipment and fan recognition methods, and a kind of fan recognition methods includes: the identification request message for receiving fan governor and sending；Fan information is sent to the fan governor, so that the fan governor identifies fan according to the fan information.Fan, fan governor, electronic equipment and fan recognition methods provided in an embodiment of the present invention, for carrying out automatic identification to fan.
Description
Technical field
The present embodiments relate to automatic control technology more particularly to a kind of fan, fan governor, electronic equipment and wind
Fan recognition methods.
Background technique
With the performance boost of electronic equipment, integrated level is higher and higher, and power consumption is also increasing therewith, the heat dissipation in equipment
Problem just becomes especially prominent.The method for solving the problems, such as equipment cooling is varied, dissipates wherein carrying out air blast cooling using fan
Heat is a kind of effective means.
Current most widely used fan is that pulse width modulates (pulse-width modulation, abbreviation PWM) wind
Fan, DC fan can control revolving speed by pwm signal, achieve the effect that energy-saving and noise-reducing.But due to the model of fan crowd
More, the control signal controlled different DC fans is also different, if it is the wind of every kind of DC fan design specialized
Control panel is fanned, then cost can greatly improve.In order to be compatible with various types of fans, dial-up is reserved usually on fan control board
Switch or electronic tag, by the model of artificial judgment fan, and are arranged toggle switch or electronic tag, make fan control board
The fan of different model is controlled.But this method the control to fan may be caused to malfunction due to human error,
Fan is operating abnormally, to cause electronic equipment can not proper heat reduction.
Summary of the invention
The embodiment of the present invention provides a kind of fan, fan governor, electronic equipment and fan recognition methods, and wind may be implemented
The automatic identification of fan.
In a first aspect, providing a kind of fan recognition methods, comprising:
Receive the identification request message that fan governor is sent；
Fan information is sent to the fan governor, so that the fan governor identifies wind according to the fan information
Fan.
In the first possible implementation of the first aspect, the fan information includes following any one or more
: producer's mark；Control frequency；Operating voltage；Operating current；Revolving speed；Air quantity；Noise.
With reference to first aspect or the first possible implementation of first aspect, second in first aspect are possible
In implementation, the fan is DC fan；
The identification request message for receiving fan governor and sending, comprising:
The identification request message that the fan governor is sent is received by pwm signal；
It is described to send fan information to the fan governor, comprising:
The fan information is sent to the fan governor by FG signal.
The possible implementation of second with reference to first aspect, in the third possible implementation of first aspect
In, the method also includes: the duty ratio of the fan identification request message is lower than the duty of the starting fan desired signal
Than.
With reference to first aspect and first aspect the first any one of to the third possible implementation,
In 4th kind of possible implementation of one side, before the transmission fan information to the fan governor, the method
Further include:
Recognition and verification message is sent to the fan governor.
Second aspect provides a kind of fan recognition methods, comprising:
Identification request message is sent to fan；
Receive the fan information that the fan is sent；
The fan is identified according to the fan information.
In the first possible implementation of the second aspect, the fan information includes following any one or more
: producer's mark；Control frequency, operating voltage, operating current, revolving speed, air quantity, noise.
In conjunction with the possible implementation of the first of second aspect or second aspect, second in second aspect is possible
In implementation, the fan is DC fan；
It is described to send identification request message to fan, comprising:
The identification request message is sent to the fan by pwm signal；
The fan information for receiving the fan and sending, comprising:
The fan information that the fan is sent is received by FG signal.
In conjunction with any one of the first of second aspect and second aspect and second of possible implementation,
In the third possible implementation of two aspects, after the fan information for receiving the fan transmission, further includes:
Correctness verification is carried out to the fan information；
If check results be it is correct, to the fan transmit and receive confirmation message；
If check results are mistake, error message is transmitted and received to the fan, and send institute to the fan again
State identification request message.
The third aspect provides a kind of fan, comprising: blower and flabellum, the blower is for driving the flabellum to rotate；
The fan further include:
Receiving module, for receiving the identification request message of fan governor transmission；
Sending module, for sending fan information to the fan governor, so that the fan governor is according to
Fan information identifies fan.
In the first possible implementation of the third aspect, the fan information includes following one or more: factory
Family's mark；Control frequency；Operating voltage；Operating current；Revolving speed；Air quantity；Noise.
In conjunction with the possible implementation of the first of the third aspect or the third aspect, second in the third aspect is possible
In implementation, the fan is DC fan；
The receiving module is requested specifically for receiving the identification that the fan governor is sent by pwm signal
Message；
The sending module is specifically used for sending the fan information to the fan governor by FG signal.
In second of possible implementation in conjunction with the third aspect, in the third possible implementation of the third aspect
In, the duty ratio of the fan identification request message is lower than the duty ratio of the starting fan desired signal.
In conjunction with any one of the first of the third aspect and the third aspect to the third possible implementation,
In 4th kind of possible implementation of three aspects, the sending module is also used to sending fan to the fan governor
Before information, recognition and verification message is sent to the fan governor.
Fourth aspect provides a kind of fan governor, comprising:
Sending module, for sending identification request message to fan；
Receiving module, the fan information sent for receiving the fan；
Processing module, for identifying the fan according to the fan information.
In the first possible implementation of the fourth aspect, the fan information includes following any one or more
: producer's mark；Control frequency；Operating voltage；Operating current；Revolving speed；Air quantity；Noise.
In conjunction with the possible implementation of the first of fourth aspect or fourth aspect, second in fourth aspect is possible
In implementation, the fan is DC fan；
The sending module is specifically used for sending the identification request message to the fan by pwm signal；
The receiving module, specifically for receiving the fan information that the fan is sent by FG signal.
In conjunction with any one of the first of fourth aspect and fourth aspect and second of possible implementation,
In the third possible implementation of four aspects, the processing module is also used to receive the fan in the receiving module
After the fan information of transmission, correctness verification is carried out to the fan information；
The sending module, if be also used to check results be it is correct, to the fan transmit and receive confirmation message；If institute
Stating result is mistake, then transmits and receives error message to the fan, and sends the identification request to the fan again and disappear
Breath.
5th aspect, provides a kind of fan, comprising: blower and flabellum；The blower is for driving the flabellum to rotate；
The fan further include: fan control module and fan information module；
The fan control module, for sending identification request message to the fan information module；
The fan information module, for sending fan information to the fan control module；
The fan control module is also used to receive the fan information, and identifies the wind according to the fan information
Fan makes the blower drive the flabellum rotation to send corresponding control signal to the blower.
In the first possible implementation of the 5th aspect, the fan control module, which is specifically used for receiving radiating, to be needed
Information is sought, and sends the control signal for meeting the radiating requirements information to the blower according to the fan information.
In conjunction with the first possible implementation of the 5th aspect or the 5th aspect, second at the 5th aspect is possible
In implementation, the fan information includes following any one or more: producer's mark；Control frequency；Operating voltage；Work
Electric current；Revolving speed；Air quantity；Noise.
In conjunction with any one of the first and second of the possible implementation of the 5th aspect and the 5th aspect, the
In the third possible implementation of five aspects, the fan is DC fan；The fan control module is PWM controller.
6th aspect, provides a kind of electronic equipment, comprising: fan and fan governor, and to radiating module；
The fan includes any such as the first of the third aspect and the third aspect into the 4th kind of possible implementation
Fan described in kind；
The fan governor includes if the first of fourth aspect and fourth aspect are into the third possible implementation
Any fan governor；
The fan governor is also used to control the fan and radiates to described to radiating module.
7th aspect, provides a kind of electronic equipment, comprising: fan, and to radiating module；
The fan includes any such as the first in terms of the 5th and in terms of the 5th into the third possible implementation
Fan described in the possible mode of kind；
The fan is used to radiate to described to radiating module.
In the first possible implementation of the 7th aspect, the electronic equipment further includes processor, is used for institute
It states fan and sends radiating requirements information.
The fan of the embodiment of the present invention, fan governor, electronic equipment and fan recognition methods, fan governor and fan
Communication obtains fan information, identifies to fan, realize the automatic identification to fan, and then can guarantee to fan
Correct control is so that fan operates normally.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of fan recognition methods flow chart provided in an embodiment of the present invention；
Fig. 2 is another fan recognition methods flow chart provided in an embodiment of the present invention；
Fig. 3 is the duty ratio and rotation speed of the fan relational graph of pwm signal；
Fig. 4 is another fan recognition methods flow chart provided in an embodiment of the present invention；
Fig. 5 is another fan recognition methods flow chart provided in an embodiment of the present invention；
Fig. 6 is fan recognition methods flow chart provided in an embodiment of the present invention；
Fig. 7 is fan recognition methods flow chart provided in an embodiment of the present invention；
Fig. 8 is a kind of structural schematic diagram of fan provided in an embodiment of the present invention；
Fig. 9 is a kind of structural schematic diagram of fan governor provided in an embodiment of the present invention；
Figure 10 is the structural schematic diagram of another fan provided in an embodiment of the present invention；
Figure 11 is the structural schematic diagram of a kind of electronic equipment provided in an embodiment of the present invention；
Figure 12 is the structural schematic diagram of another electronic equipment provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Fan is commonly used in the heat dissipation of electronic equipment, and the air quantity of fan is to act the factor directly affected to heat dissipation effect.
It include blower and flabellum in fan, blower is rotated according to control signal, and then flabellum is driven to be rotated, to generate
Wind, to the revolving speed for the usually fan that the air quantity of fan has a direct impact, the revolving speed of fan is generally turned with blower per minute
Dynamic week number is counted, and unit is per minute/turn (revolutions per minute, symbol rpm).Pass through control fan
The parameters such as frequency, voltage, electric current, signal dutyfactor can achieve the purpose for changing rotation speed of the fan.
In the embodiment of the present invention, fan is sent information relevant to fan control by the communication with fan governor
To fan governor, so that fan governor be made to identify fan, and the control signal of fan is correctly set, avoids manual identified
The problem of fan and setting fan governor malfunction, and cause fan alarm, are operating abnormally.Fan governor can be set in fan
On control panel, any position in the electronic equipment of installation fan also can be set.Fan provided in an embodiment of the present invention, wind
Fan controller and fan recognition methods can be applied to any electronic equipment needed using fan.
Fig. 1 is a kind of fan recognition methods flow chart provided in an embodiment of the present invention, is executed by fan, the method packet
It includes:
101, receive the identification request message that fan governor is sent.
Specifically, it is provided with fan information controller in fan provided in an embodiment of the present invention, for storing fan information,
And communicated with fan governor, specifically, the identification request message that fan governor is sent is received, and to fan governor
The fan information for sending storage, so that fan governor be made to identify fan.
It before fan governor controls fan, needs to identify fan, therefore fan governor is first
Identification request message is sent to fan.The fan can be communicated by any form of signal wire with fan governor.For example, logical
Normal DC fan has 4 pins, respectively power supply (power), (symbol: GND), pwm signal and fan normally indicate (symbol:
FG) signal, wherein pwm signal pin is used to receive the pwm control signal of fan governor transmission, and FG signal pins are for aweather
It fans controller and sends the indication signal that fan works normally.In the embodiment of the present invention, if it is DC fan, then it can pass through PWM
Signal pins receive the identification request message that fan governor is sent.For the fan of other forms, can be used it is any can
The pin for receiving the control signal of fan governor receives the identification request message that fan governor is sent, or new setting one
Pin is used to receive the identification request message of fan governor transmission.
102, fan information is sent to the fan governor, so that the fan governor is known according to the fan information
Other fan.
Specifically, after fan information controller receives the identification request message, fan information is sent to fan governor.
For example, DC fan can send fan information to fan governor by FG signal pins.It, can for the fan of other forms
To use any pin that can send information to fan governor to send fan information to fan governor, or can newly be arranged
One pin is used to send fan information to fan governor.Fan information includes but is not limited to following any one or more:
Producer's mark, control frequency, operating voltage, operating current, revolving speed, air quantity, noise.
After fan governor receives fan information, the fan will be identified according to fan information, to identify
The fan.It can be stored in advance in fan governor there are many fan control signal, different fan informations can correspond to not
Same fan control signal.For example, identical control signal can be used in the fan of same producer's production；Alternatively, revolving speed is identical
Fan use identical control signal.Therefore after fan governor receives fan information, so that it may determine to fan institute
The control signal used, to realize the identification to fan.
In addition, the default create-rule of fan control signal can also be saved in fan governor, wind can received
After fanning the fan information sent, according to information such as operating voltage, operating current, control frequency, revolving speed, air quantity, according to default life
The control signal of fan is generated at rule.Above-mentioned default create-rule is, for example, a calculation formula, and fan information is substituted into should
Calculation formula is the control signal for producing fan.
The embodiment of the present invention sends fan information to fan governor by fan, carries out fan governor to fan
Identification, realizes the automatic identification to fan.
Further, when fan sends fan information to fan governor, so that fan governor is believed according to the fan
It can also include: the control signal for receiving fan governor and being sent according to fan information after breath identification fan；According to control signal
Control flabellum rotation.
Fig. 2 is another fan recognition methods flow chart provided in an embodiment of the present invention, is executed by fan, the method packet
It includes:
201, receive the identification request message that fan governor is sent.
202, recognition and verification message is sent to the fan governor.
Specifically, in the present embodiment, after the identification request message that fan receives fan governor transmission, first to fan
Controller sends recognition and verification message, then sends fan information to fan governor.Identification request message and recognition and verification disappear
Breath can be understood as the handshake between fan and fan governor, i.e. fan and fan governor passes through identification request message
With the interaction of recognition and verification message, mutually learns and need to carry out fan identification.Further, it can preset and connect in fan governor
Time window is received, fan governor starts the receiving time window after sending identification request message, if in the receiving time window,
Before i.e. the receiving time window is closed, fan governor receives the recognition and verification message of fan transmission, indicates success of shaking hands；It is no
Then, it shakes hands unsuccessfully, it will be considered that this time identification process failure, fan governor can send identification request message again.
203, fan information is sent to the fan governor, so that the fan governor is known according to the fan information
Other fan.
204, receive the reception confirmation message that the fan governor is sent.
Specifically, after fan governor receives fan information, fan governor can also transmit and receive true to fan
Recognize information.
Further, after step S203, if can also include: to be not received by fan governor within a preset time
The reception confirmation message of transmission, fan can retransmit primary air fan information, fan governor can also be waited to retransmit
Identify request message.
Further, in Fig. 1 and embodiment illustrated in fig. 2, if fan is DC fan, fan is received by pwm signal
The identification request message that the fan governor is sent；Fan sends the wind to the fan governor by FG signal
Fan information.
For DC fan, there are certain relationships, such as Fig. 3 with rotation speed of the fan for the pwm signal that fan governor is sent
Shown, Fig. 3 is the duty ratio and rotation speed of the fan relational graph of pwm signal.Abscissa is the duty ratio of pwm signal in Fig. 3, with percentage
Than indicating；Ordinate is the revolving speed of fan, and as a percentage, 100% expression fan reaches maximum (top) speed.It can be with from Fig. 3
Find out, when the duty ratio of pwm signal is less than 20%, fan will be unable to start.For different DC fans, start DC fan
Signal minimum duty cycle it is different, but can all have a threshold value, when the duty ratio of pwm signal is less than the threshold value,
DC fan will not start.
Therefore, carried out in Fig. 1 and embodiment illustrated in fig. 2, between fan and fan governor identification interact used in
It identifies request message, recognition and verification message and receives the signal that confirmation message can be less than threshold value using above-mentioned duty ratio.This
When fan and fan governor carry out identifying interactive, fan will not start sample, but complete in the state that fan is static
The transmission of fan information.After fan governor identifies fan by fan information, retransmit corresponding with fan information certain
The control signal of duty ratio, control fan are rotated.In this way, in fan identification process, can to avoid fan revolving speed with
Fan information mismatches, or even the problem of anomalous rotation occurs.
Fig. 4 is another fan recognition methods flow chart provided in an embodiment of the present invention, is executed by fan governor, described
Method includes:
401, identification request message is sent to fan.
Specifically, fan governor sends identification request message to fan.
The fan control board that fan is installed in electronic equipment can be set in fan governor provided in an embodiment of the present invention
On, it is also possible to control any processor of fan in electronic equipment.
It before fan governor controls fan, needs to identify fan, therefore fan governor is first
Identification request message is sent to fan.Fan governor can be communicated by any form of signal wire with fan.For example, usually
DC fan has 4 pins, be separately connected power supply, pwm signal and FG signal, wherein pwm signal pin is for receiving fan
The pwm control signal that controller is sent, FG signal pins are used to send the indication signal that fan works normally to fan governor.
In embodiments of the present invention, if it is DC fan, then fan governor can be sent to fan by pwm signal pin and be known
Other request message.For the fan of other forms, fan governor can be used any can send to fan and control signal
Pin sends identification request message, or a pin can be reset on fan, fan governor by the pin to
Fan sends identification request message.
402, receive the fan information that the fan is sent.
Specifically, fan governor will receive the fan information of fan transmission.For example, if it is DC fan, fan control
Device processed can receive the fan information that fan is sent by FG signal pins.For the fan of other forms, fan governor can
To use any pin reception fan transmission fan information that can be received fan and send information, or can be on fan again
One pin is set, and fan governor receives the fan information that fan is sent by the pin.Fan information includes but is not limited to
It is following any one or more: producer's mark, control frequency, operating voltage, operating current, revolving speed, air quantity, noise.
403, the fan is identified according to the fan information.
Specifically, after fan governor receives fan information, fan will be identified according to fan information.
Further, fan control signal there are many being stored in advance in fan governor, different fan informations
Different fan control signals can be corresponded to.For example, identical control signal can be used in the fan of same producer's production；Or
Person, the identical fan of revolving speed use identical control signal.When fan governor receives fan information, the fan is identified
Afterwards, it can determine to signal is controlled used in fan, to realize the correct control to fan.
In addition, the default create-rule of fan control signal can also be saved in fan governor, wind can received
After fanning the fan information sent, according to information such as operating voltage, operating current, control frequency, revolving speed, air quantity, according to default life
The control signal of fan is generated at rule.
In the present embodiment, fan governor sends identification request message to fan, and receives the fan information of fan transmission,
Fan is identified according to fan information, to realize the automatic identification of fan.
It further, can also include: according to fan information after fan governor identifies fan according to fan information
Generate control signal；The control signal is sent to fan, so that fan drives flabellum to rotate according to control signal.
Fig. 5 is another fan recognition methods flow chart provided in an embodiment of the present invention, is executed by fan governor, described
Method includes:
501, identification request message is sent to fan.
502, the recognition and verification message that the fan is sent is received in default receiving time.
503, if the recognition and verification message that the fan is sent is not received in default receiving time, again to described
Fan sends the identification request message.
Specifically, it in the present embodiment, after fan governor sends identification request message to fan, first receives fan and sends
Recognition and verification message, i.e., fan confirmation receives the identification request message.Identify that request message and recognition and verification message can be with
The handshake being interpreted as between fan and fan governor, i.e. fan and fan governor pass through identification request message and identification
The interaction of confirmation message is mutually learnt and needs to carry out fan identification.Receiving time window, fan control can be preset in fan governor
Device processed send identify request message after start the receiving time window, if in the receiving time window, i.e. the receiving time window
Before closing, fan governor receives the recognition and verification message of fan transmission, indicates success of shaking hands；Otherwise, it shakes hands unsuccessfully, will recognize
For the failure of this identification process, fan governor can send identification request message again.
504, receive the fan information that the fan is sent.
505, correctness verification is carried out to the fan information.
It specifically, can also be to the correct of fan information after fan governor receives the fan information of fan transmission
Whether checked, i.e., to fan information carry out correctness verification.Generally, even-odd check can be carried out to fan information, or
Person can also be verified using cyclic redundancy check code (Cyclic Redundancy Check, abbreviation CRC).If verification knot
Fruit be it is correct, then follow the steps 506, it is no to then follow the steps 507.
506, if check results be it is correct, to the fan transmit and receive confirmation message.
Specifically, if the check results that fan governor carries out correctness verification to fan information are correct, fan control
Device processed transmits and receives confirmation message to fan, continues to execute step 508.
507, if check results are mistake, error message is transmitted and received to the fan.
Specifically, if the check results that fan governor carries out correctness verification to fan information are mistake, fan control
Device processed transmits and receives error message to fan；Fan governor can send identification request message to the fan again, again
Start fan identification process, i.e. fan governor re-execute the steps 501~505.
508, the fan is identified according to the fan information.
Further, in the embodiment shown in figs. 4 and 5, if fan is DC fan, fan governor is believed by PWM
Number to fan send identification request message；Fan governor receives the fan information that fan is sent by FG signal.
For DC fan, the pwm signal and rotation speed of the fan that fan governor is sent there are certain relationship, for
Different DC fans, the minimum duty cycle for starting the signal of DC fan is different, but can all have a threshold value, when PWM believes
Number duty ratio be less than the threshold value when, DC fan will not start.Therefore, in the embodiment shown in figs. 4 and 5, fan with
Carried out between fan governor identification request message, recognition and verification message used in identification interaction and receive confirmation message can be with
It is less than the signal of threshold value using above-mentioned duty ratio.In this way when fan and fan governor carry out identifying interactive, fan will not
It will start, but complete the transmission of fan information in the state that fan is static.When fan governor is identified by fan information
After fan, the control signal of certain duty ratio corresponding with fan information is retransmited, control fan is rotated.In this way, in wind
It fans in identification process, can be mismatched to avoid the revolving speed and fan information of fan, or even the problem of anomalous rotation occur.
Below by taking DC fan as an example, the fan recognition methods provided the various embodiments described above is described in detail.Fig. 6 is
Fan recognition methods flow chart provided in an embodiment of the present invention, Fig. 7 are fan recognition methods process provided in an embodiment of the present invention
Figure.Fan in Fig. 6 and embodiment illustrated in fig. 7 is DC fan, and fan governor controls DC fan by pwm signal
It makes, and the signal that fan is sent is received by FG signal, wherein the signal dutyfactor of DC fan and rotation speed of the fan relationship such as Fig. 3
It is shown.
As shown in Figure 6 and Figure 7, in step 601, the pwm signal alternating of fan governor output duty cycle 5% and 10%
Three times.Simultaneously in step 701, DC fan will receive the pwm signal alternating of duty ratio 5% and 10% three times.From Fig. 3
It can be seen that, DC fan not will start when receiving pwm signal of the duty ratio lower than 20%.Therefore when DC fan receives
When the pwm signal of duty ratio 5% and 10% is replaced three times, DC fan will not start.The pwm signal of duty ratio 5% and 10%
Alternating may be considered a kind of identification request message three times, i.e. fan governor sends duty ratio 5% and 10% to DC fan
Pwm signal alternately requests to identify fan three times.The identification request message is not limited to the PWM letter of duty ratio 5% and 10%
A kind of number alternating this form three times, fan governor and DC fan can also arrange the identification request message of other forms, can be with
Guarantee that the identification request message not will start fan.In step 601, the pwm signal of fan governor output can be adopted
With the frequency of 1kHz.
In a step 702, after DC fan receives the pwm signal alternating of duty ratio 5% and 10% three times, DC fan
FG signal is dragged down and is kept 100ms, i.e. fan keeps FG signal to export low level 100ms, sends as to fan governor
Recognition and verification message, notice fan governor have received fan identification request, fan information will be sent to fan governor.
In step 602, whether fan governor detection FG signal is pulled low and keeps 100ms.Fan governor can connect at one
Receive time window, such as 300ms, interior detection FG signal, such as fan governor output duty cycle 5% and 10% in step 701
Pwm signal alternately open the receiving time window afterwards three times, FG signal is detected in the receiving time window.If connecing at this
It receives discovery FG signal in time window and is pulled low and keeps 100ms, then confirm that DC fan has received the knowledge of fan governor transmission
Other request message, continues to execute step 703.If fan governor does not find that FG signal is pulled low and protects in the receiving time window
100ms is held, identification request message can be sent to DC fan again, that is, re-execute the steps 601.
In step 703, DC fan sends fan information by FG signal, optionally, fan governor transmission is waited to connect
Receive confirmation message.In step 603, fan governor receives fan information by FG signal, and to the fan information received
Correctness verification is carried out, for example, carrying out even-odd check to fan information.
If check results be it is correct, fan governor to DC fan transmit and receive confirmation message, i.e., execution step 604,
For example, pwm signal to be dragged down to and kept 100ms, i.e., fan governor keeps pwm signal to export low level 100ms, as reception
Confirmation message.If DC fan, after having sent data, discovery pwm signal keeps output low level 100ms, then DC fan is thought
This fan automatic identification process terminates.
If check results are mistake, fan governor will retransmit fan identification request, and start fan identification process,
It re-execute the steps 601~603.Optionally, fan governor can also transmit and receive error message to DC fan, such as
100ms is drawn high and kept to pwm signal by fan governor, i.e. fan governor keeps pwm signal to export high level 100ms, makees
For the reception error message.
If DC fan after having sent fan information, does not find that pwm signal keeps output low level 100ms, i.e., do not receive
Receive confirmation message；Alternatively, discovery pwm signal keeps output high level 100ms, that is, the reception error message is received, then PWM wind
Fan can resume waiting for receiving the identification request message of fan governor transmission, can also retransmit the primary fan letter
Breath.
In step 605, fan governor identifies the DC fan according to the fan information received, and determines that control should
Signal is controlled used in DC fan, completes the automatic identification and control of DC fan.
For example, the fan information controller can save fan type information table as shown in Table 1.
1 fan information table of table
| Type | Value |
| Producer | XX company |
| Control frequency | 1kHz |
| Operating voltage | Direct current 7V-12V |
| Operating current | 0.41A (maximum 0.48A) |
| Rotation speed of the fan | 4500rpm |
| Air quantity | 68CFM |
| Noise | 48dB |
Part fan information is shown in table 1, in Fig. 6 and embodiment illustrated in fig. 7, wind that fan is sent to fan governor
Fan information includes but is not limited to any information in table 1.Wherein different size can be distributed for different types of fan information
Memory space.The unit of rotation speed of the fan is rpm, and the unit of air quantity is cubic feet/min (English: cubic feet per
Minute, symbol: CFM), the unit of noise is decibel (symbol: dB).
It should be noted that fan recognition methods shown in the various embodiments described above of the present invention is applicable not only to DC fan, also
The fan that the revolving speed of fan can be adjusted by adjusting control signal suitable for other.Such as voltage-controlled fan, for pressure
For controlling fan, different supply voltages is provided for it, then the revolving speed of fan will be different, in the range of nominal tension of fan,
The more high then revolving speed of voltage is higher.According to fan recognition methods provided in an embodiment of the present invention, then it is provided in voltage-controlled fan
Corresponding fan information is also preset with corresponding relationship (or the fan control of different fan supply voltages and revolving speed in fan governor
Device processed can generate the corresponding relationship of supply voltage and revolving speed according to fan information), after fan governor obtains fan information,
Fan can be identified, and then be rotated using different supply voltage control fans.
Fig. 8 is a kind of structural schematic diagram of fan provided in an embodiment of the present invention, as shown in figure 8, the fan of the present embodiment
Include:
Blower 81 and flabellum 82, blower 81 is for driving flabellum 82 to rotate.
Receiving module 83, for receiving the identification request message of fan governor transmission.
Sending module 84, for sending fan information to the fan governor, so that the fan governor is according to institute
State fan information identification fan.
Technical solution of the fan provided in this embodiment for realizing embodiment of the method shown in Fig. 1, realization principle and skill
Art effect is similar, can be with reference to described in embodiment of the method shown in Fig. 1, and details are not described herein again.
Further, in the embodiment shown in fig. 8, the fan information includes following any one or more: producer's mark
Know, control frequency, operating voltage, operating current, revolving speed, air quantity, noise.
Further, in the embodiment shown in fig. 8, it can be DC fan；Then receiving module 83, specifically for passing through PWM
Signal receives the identification request message that the fan governor is sent；Sending module 84, be specifically used for by FG signal to
The fan governor sends the fan information.Correspondingly, the duty ratio of the fan identification request message is lower than the wind
The duty ratio of fan starting desired signal.
Further, in the embodiment shown in fig. 8, receiving module 83 are also used to receive the fan governor according to institute
State the control signal of fan information transmission；Blower 81 is also used to drive flabellum 82 to rotate according to the control signal.
Further, in the embodiment shown in fig. 8, sending module 84 are also used to sending wind to the fan governor
Before fanning information, recognition and verification message is sent to the fan governor.
Further, in the embodiment shown in fig. 8, receiving module 83, if being also used to be not received by within a preset time
The reception confirmation message that the fan governor is sent then receives the identification request that the fan governor is sent again and disappears
Breath.
Fig. 9 is a kind of structural schematic diagram of fan governor provided in an embodiment of the present invention, as shown in figure 9, the present embodiment
Fan governor include:
Sending module 91, for sending identification request message to fan.
Receiving module 92, the fan information sent for receiving the fan.
Processing module 93, for identifying the fan according to the fan information.
Fan governor provided in this embodiment is realized former for realizing the technical solution of embodiment of the method shown in Fig. 4
Reason is similar with technical effect, can be with reference to described in embodiment of the method shown in Fig. 4, and details are not described herein again.
Further, in the embodiment shown in fig. 9, the fan information includes following any one or more: producer's mark
Know, control frequency, operating voltage, operating current, revolving speed, air quantity, noise.
Further, in the embodiment shown in fig. 9, the fan includes DC fan；Sending module 91 is specifically used for logical
It crosses pwm signal and sends the identification request message to the fan；Receiving module 92 is specifically used for by described in the reception of FG signal
The fan information that fan is sent.
Further, in the embodiment shown in fig. 9, the duty ratio of the fan identification request message is opened lower than the fan
The duty ratio of dynamic desired signal.
Further, in the embodiment shown in fig. 9, processing module 93 are also used to generate control according to the fan information
Signal；Sending module 91 is also used to send the control signal to the fan, so that the fan is according to the control signal
Drive flabellum rotation.
Further, in the embodiment shown in fig. 9, receiving module 92 are also used in the fan for receiving the fan transmission
Before information, the recognition and verification message that the fan is sent is received.
Further, in the embodiment shown in fig. 9, sending module 91 are also used to sending identification request message to fan
Later, it if the receiving module 92 does not receive the recognition and verification message that the fan is sent in default receiving time, weighs
Newly the identification request message is sent to the fan.
Further, in the embodiment shown in fig. 9, processing module 93 are also used to receive the fan in receiving module 92
After the fan information of transmission, correctness verification is carried out to the fan information；Sending module 91 is if being also used to check results
It is correct then to the fan transmit and receive confirmation message；Mistake is transmitted and received to the fan if check results are mistake to disappear
Breath, and the identification request message is sent to the fan again.
Figure 10 is the structural schematic diagram of another fan provided in an embodiment of the present invention, and the fan of the present embodiment includes: wind
Machine 111 and flabellum 112, blower 111 is for driving flabellum 112 to rotate；Fan provided in this embodiment, embodiment shown in Fig. 8
On the basis of, further include fan control module 113 and fan information module 114, automatic identification and control may be implemented.In this way,
The electronic equipment for installing the fan, without providing additional fan control board, it is only necessary to by radiating requirements information, such as air quantity, temperature
The information such as degree, revolving speed are sent to the fan in the present embodiment, and fan can automatically generate control signal in inside, control blower band
Dynamic flabellum rotation generates the air quantity for meeting radiating requirements to reach heat dissipation effect.
Fan controller module 113, for sending identification request message to fan information module 114.
Fan information module 114, for sending fan information to fan controller module 113.
Fan controller module 113 is also used to receive the fan information, and identifies the wind according to the fan information
Fan makes blower 111 that flabellum 112 be driven to rotate to send corresponding control signal to blower 111.
Specifically, in fan provided in this embodiment, fan controller module 113 is for completion and embodiment illustrated in fig. 9
Shown in the identical function of fan governor.As a whole by other modules other than fan controller module 113,
Then the entirety is used to complete function identical with fan shown in embodiment illustrated in fig. 8.Fan controller module 113 is for receiving
The radiating requirements information of electronic equipment, identifies fan and controls fan and reach corresponding heat dissipation effect.Using the present invention
The fan that embodiment provides, then install and no longer need to be arranged fan control board in the electronic equipment of fan, but can pass through electricity
Any control chip in sub- equipment sends radiating requirements information to fan, then Urine scent may be implemented in fan, and is turned
It moves to reach corresponding heat dissipation effect.
Fan provided by the present embodiment can make to be not required to setting fan control board in electronic equipment, to save electricity
Space in sub- equipment.
Further, in the embodiment shown in fig. 10, fan control module 113 is specifically used for receiving radiating requirements information,
The identification request message is sent to fan information module 114 and receives the fan information, is identified according to the fan information
The fan, to send the control signal for meeting the radiating requirements information to blower 111.
Further, in the embodiment shown in fig. 10, the fan information includes following any one or more: producer's mark
Know, control frequency, operating voltage, operating current, revolving speed, air quantity, noise.
Optionally, in the embodiment shown in fig. 10, the fan is DC fan；Fan control module 113 is PWM control
Device.
Figure 11 is the structural schematic diagram of a kind of electronic equipment provided in an embodiment of the present invention, as shown in figure 11, the present embodiment
Electronic equipment include fan 121, fan governor 122 and to radiating module 123.
Wherein technical solution of the fan 121 for realizing embodiment of the method as shown in Figure 1 or 2, the use of fan governor 122
In the technical solution for realizing the embodiment of the method as shown in Fig. 4 or Fig. 5.Fan 121 can use the specific knot of fan as shown in Figure 8
Structure, structure and working principle can be with reference to described in embodiments shown in Fig. 8, and details are not described herein again.In the present embodiment, with wind
It is illustrated for the specially DC fan of fan 121.
As shown in figure 11, when fan 121 is DC fan, fan 121 may include: blower 124, flabellum 125, PWM control
Device 126 and fan information controller 127 processed.Wherein blower 124 for driving flabellum 125 to rotate, use by fan information controller 127
In the identification request message for receiving the transmission of fan governor 122, fan information is sent to fan governor 122, so that fan control
Device 122 processed identifies fan 121 according to the fan information.PWM controller 126 is used to receive the control of the transmission of fan governor 122
Signal processed makes blower 124 that flabellum 125 be driven to rotate to send corresponding control signal to blower 124.To realize fan
Controller 122 controls fan 121 and treats the heat dissipation of radiating module 123.
Wherein, PWM controller 126 and fan information controller 127 can be two chips being arranged in fan 121,
Or PWM controller 126 and fan information controller 127 can be two in the same chip being arranged in fan 121
Functional module.
When fan 121 is DC fan, technical solution of the fan 121 for realizing embodiment of the method as shown in Figure 7, wind
Controller 122 is fanned for realizing the technical solution of embodiment of the method as shown in Figure 6.
The embodiment of the present invention also provides another electronic equipment, including fan 131 and to radiating module 132.
Fan 131 is for treating the heat dissipation of radiating module 132.Wherein fan 131 can be using fan as shown in Figure 10
Specific structure, structure and working principle can be with reference to described in embodiments shown in Fig. 10, and details are not described herein again.
Further, which further includes processor 133, for sending radiating requirements information to fan 131.Such as figure
Shown in 12, Figure 12 is the structural schematic diagram of another electronic equipment provided in an embodiment of the present invention, and wherein processor 133 can be
Any processor in electronic equipment, including central processing unit.
Electronic equipment provided in this embodiment, it is only necessary to send radiating requirements information from processor to fan, fan can be real
Existing Urine scent generates corresponding air quantity and reaches effect to automatically generate control signal inside fan.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to
The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey
When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned include: ROM, RAM, magnetic disk or
The various media that can store program code such as person's CD.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (18)
1. a kind of fan recognition methods characterized by comprising
Receive the identification request message that fan governor is sent；
Fan information is sent to the fan governor, so that the fan governor identifies fan according to the fan information；
The fan is pulse width modulation (PWM) fan；The identification request message for receiving fan governor and sending, comprising:
The identification request message that the fan governor is sent is received by pwm signal；
It is described to send fan information to the fan governor, comprising: normally to indicate FG signal to the fan control by fan
Device processed sends the fan information；
Wherein, the duty ratio of the identification request message is lower than the duty ratio of the starting fan desired signal.
2. the method according to claim 1, wherein the fan information includes following any one or more:
Producer's mark；
Control frequency；
Operating voltage；
Operating current；
Revolving speed；
Air quantity；
Noise.
3. method according to claim 1 or 2, which is characterized in that described to send fan information to the fan governor
Before, the method also includes:
Recognition and verification message is sent to the fan governor.
4. a kind of fan recognition methods characterized by comprising
Identification request message is sent to fan；
Receive the fan information that the fan is sent；
The fan is identified according to the fan information；
The fan is pulse width modulation (PWM) fan；It is described to send identification request message to fan, comprising: to pass through pwm signal
The identification request message is sent to the fan；
The fan information for receiving the fan and sending, comprising: normally indicate that FG signal receives the fan hair by fan
The fan information sent；
Wherein, the duty ratio of the identification request message is lower than the duty ratio of the starting fan desired signal.
5. according to the method described in claim 4, it is characterized in that, the fan information includes following any one or more:
Producer's mark；
Control frequency；
Operating voltage；
Operating current；
Revolving speed；
Air quantity；
Noise.
6. method according to claim 4 or 5, which is characterized in that it is described receive fan information that the fan is sent it
Afterwards, further includes:
Correctness verification is carried out to the fan information；
If check results be it is correct, to the fan transmit and receive confirmation message；
If check results are mistake, error message is transmitted and received to the fan, and send the knowledge to the fan again
Other request message.
7. a kind of fan characterized by comprising blower and flabellum, the blower is for driving the flabellum to rotate；The wind
Fan further include:
Receiving module, for receiving the identification request message of fan governor transmission；
Sending module, for sending fan information to the fan governor, so that the fan governor is according to the fan
Information identifies fan；
The fan is pulse width modulation (PWM) fan；The receiving module, specifically for receiving the wind by pwm signal
Fan the identification request message that controller is sent；
The sending module, specifically for normally indicating that FG signal sends the fan to the fan governor and believes by fan
Breath；
Wherein, the duty ratio of the identification request message is lower than the duty ratio of the starting fan desired signal.
8. fan according to claim 7, which is characterized in that the fan information includes following any one or more:
Producer's mark；
Control frequency；
Operating voltage；
Operating current；
Revolving speed；
Air quantity；
Noise.
9. fan according to claim 7 or 8, which is characterized in that the sending module is also used to the fan control
Before device processed sends fan information, recognition and verification message is sent to the fan governor.
10. a kind of fan governor characterized by comprising
Sending module, for sending identification request message to fan；
Receiving module, the fan information sent for receiving the fan；
Processing module, for identifying the fan according to the fan information；
The fan is pulse width modulation (PWM) fan；The sending module is specifically used for passing through pwm signal to the fan
Send the identification request message；
The receiving module, specifically for normally indicating that FG signal receives the fan that the fan is sent and believes by fan
Breath；
Wherein, the duty ratio of the identification request message is lower than the duty ratio of the starting fan desired signal.
11. fan governor according to claim 10, which is characterized in that the fan information includes following any one
Or it is multinomial:
Producer's mark；
Control frequency；
Operating voltage；
Operating current；
Revolving speed；
Air quantity；
Noise.
12. fan governor described in 0 or 11 according to claim 1, which is characterized in that the processing module is also used in institute
After stating the fan information that receiving module receives the fan transmission, correctness verification is carried out to the fan information；
The sending module, if be also used to check results be it is correct, to the fan transmit and receive confirmation message；If verification knot
Fruit is mistake, then transmits and receives error message to the fan, and sends the identification request message to the fan again.
13. a kind of fan characterized by comprising blower and flabellum；The blower is for driving the flabellum to rotate；
The fan further include: fan control module and fan information module；
The fan control module, for sending identification request message to the fan information module；
The fan information module, for sending fan information to the fan control module；
The fan control module is also used to receive the fan information, and identifies the fan according to the fan information, with
Corresponding control signal is sent to the blower, the blower is made to drive the flabellum rotation；The fan is pulse width tune
DC fan processed；The fan control module is PWM controller；
Wherein, the duty ratio of the identification request message is lower than the duty ratio of the starting fan desired signal.
14. fan according to claim 13, which is characterized in that the fan control module, which is specifically used for receiving radiating, to be needed
Information is sought, send the identification request message to the fan information module and receives the fan information, according to the fan
Information identifies the fan, to send the control signal for meeting the radiating requirements information to the blower.
15. fan described in 3 or 14 according to claim 1, which is characterized in that the fan information include following any one or
It is multinomial:
Producer's mark；
Control frequency；
Operating voltage；
Operating current；
Revolving speed；
Air quantity；
Noise.
16. a kind of electronic equipment characterized by comprising such as the described in any item fans of claim 7~9 and as right is wanted
10~12 described in any item fan governors are sought, and to radiating module；
The fan governor is also used to control the fan and radiates to described to radiating module.
17. a kind of electronic equipment characterized by comprising such as the described in any item fans of claim 13~15, and wait dissipate
Thermal modules；
The fan is used to radiate to described to radiating module.
18. electronic equipment according to claim 17, which is characterized in that further include processor, for being sent out to the fan
Send radiating requirements information.
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| CN201410253840.9A CN105224047B (en) | 2014-06-09 | 2014-06-09 | Fan, fan governor, electronic equipment and fan recognition methods |
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| CN105573298B (en) * | 2016-01-20 | 2018-08-07 | 潍柴动力股份有限公司 | A kind of inspection fan for vehicle scalar quantity and the matched method and device of configuration amount |
| CN106774731A (en) * | 2016-12-01 | 2017-05-31 | 郑州云海信息技术有限公司 | A kind of method for designing and system of compatible various fan regulation and controlling strategies |
| CN107035713B (en) * | 2017-05-25 | 2018-07-31 | 广东万和热能科技有限公司 | A kind of automatic identifying method and device of DC fan type |
| CN107635379B (en) * | 2017-09-13 | 2020-01-03 | 新华三技术有限公司 | Fan module, network equipment and fan information identification method |
| US10866006B2 (en) * | 2018-06-25 | 2020-12-15 | Dell Products L.P. | Systems and methods for fan typing and anomaly detection |
| US11402882B2 (en) * | 2018-09-19 | 2022-08-02 | Hewlett Packard Enterprise Development Lp | Pulse width modulation fan |
| CN111911440B (en) * | 2019-05-07 | 2023-10-13 | 联想企业解决方案(新加坡)有限公司 | Fan type identification device and method |
| CN111005892B (en) * | 2019-12-18 | 2021-06-18 | 迈普通信技术股份有限公司 | Adaptive fan circuit, system, electronic equipment and fan detection method |
| TW202231999A (en) | 2021-02-03 | 2022-08-16 | 陞達科技股份有限公司 | Fan system and fan driving method |
| CN113032210B (en) * | 2021-03-10 | 2022-07-12 | 中科长城海洋信息系统有限公司长沙分公司 | Server fan self-adaptive control method and control system thereof |
| CN113202804B (en) * | 2021-05-31 | 2023-03-31 | 山东英信计算机技术有限公司 | Method for flexibly adjusting rotating speed of server fan |
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