CN105224047A - 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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- CN105224047A CN105224047A CN201410253840.9A CN201410253840A CN105224047A CN 105224047 A CN105224047 A CN 105224047A CN 201410253840 A CN201410253840 A CN 201410253840A CN 105224047 A CN105224047 A CN 105224047A
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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 comprises: receive the identification request message that fan governor sends; Fan information is sent, to make described fan governor according to described fan information identification fan to described fan governor.The fan that the embodiment of the present invention provides, fan governor, electronic equipment and fan recognition methods, for automatically identifying fan.
Description
Technical field
The embodiment of the present invention relates to automatic control technology, particularly relates to a kind of fan, fan governor, electronic equipment and fan recognition methods.
Background technology
Along with the performance boost of electronic equipment, integrated level is more and more higher, and power consumption is also thereupon increasing, and the heat dissipation problem in equipment just becomes particularly outstanding.The method solving equipment cooling problem is varied, and wherein utilizing fan to carry out air blast cooling heat radiation is a kind of effective means.
Current most widely used fan is pulse-length modulation (pulse-widthmodulation is called for short PWM) fan, and PWM fan can be controlled rotating speed by pwm signal, reaches the effect of energy-saving and noise-reducing.But because the model of fan is numerous, the control signal controlled different PWM fans is also different, if be the special fan control board of often kind of PWM fan design, then cost can improve greatly.In order to the fan of compatible Multiple Type, normally reserved toggle switch or electronic tag on fan control board, by the model of artificial judgment fan, and arrange toggle switch or electronic tag, the fan of fan control board to different model controlled.But this method may cause owing to manually makeing mistakes makeing mistakes to the control of fan, fan operation exception, thus cause electronic equipment cannot 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, can realize the automatic identification of fan.
First aspect, provides a kind of fan recognition methods, comprising:
Receive the identification request message that fan governor sends;
Fan information is sent, to make described fan governor according to described fan information identification fan to described fan governor.
In the first possible implementation of first aspect, described fan information comprises following any one or more: producer identifies; Controlled frequency; Operating voltage; Working current; Rotating speed; Air quantity; Noise.
In conjunction with the first possible implementation of first aspect or first aspect, in the implementation that the second of first aspect is possible, described fan is PWM fan;
The identification request message that described reception fan governor sends, comprising:
The described identification request message of described fan governor transmission is received by pwm signal;
Described to described fan governor transmission fan information, comprising:
Described fan information is sent to described fan governor by FG signal.
In conjunction with the implementation that the second of first aspect is possible, in the third possible implementation of first aspect, described method also comprises: the dutycycle of described fan identification request message is lower than the dutycycle of described starting fan desired signal.
In conjunction with the first of first aspect and first aspect to any one in the third possible implementation, in the 4th kind of possible implementation of first aspect, described send fan information to described fan governor before, described method also comprises:
Recognition and verification message is sent to described fan governor.
Second aspect, provides a kind of fan recognition methods, comprising:
Send to fan and identify request message;
Receive the fan information that described fan sends;
Fan according to the identification of described fan information.
In the first possible implementation of second aspect, described fan information comprises following any one or more: producer identifies; Controlled frequency, operating voltage, working current, rotating speed, air quantity, noise.
In conjunction with the first possible implementation of second aspect or second aspect, in the implementation that the second of second aspect is possible, described fan is PWM fan;
Described transmission to fan identifies request message, comprising:
Described identification request message is sent to described fan by pwm signal;
The fan information that the described fan of described reception sends, comprising:
By the described fan information that fan described in FG Signal reception sends.
In conjunction with any one in implementation that the first and the second of second aspect and second aspect are possible, in the third possible implementation of second aspect, after the fan information that the described fan of described reception sends, also comprise:
Correctness verification is carried out to described fan information;
If check results is correct, then to described fan transmission and reception acknowledge message;
If check results is mistake, then to described fan transmission and reception error message, and again send described identification request message to described fan.
The third aspect, provides a kind of fan, comprising: blower fan and flabellum, and described blower fan rotates for driving described flabellum; Described fan also comprises:
Receiver module, for receiving the identification request message that fan governor sends;
Sending module, for sending fan information, to make described fan governor according to described fan information identification fan to described fan governor.
In the first possible implementation of the third aspect, described fan information comprises one or more as follows: producer identifies; Controlled frequency; Operating voltage; Working current; Rotating speed; Air quantity; Noise.
In conjunction with the first possible implementation of the third aspect or the third aspect, in the implementation that the second of the third aspect is possible, described fan is PWM fan;
Described receiver module, specifically for receiving the described identification request message that described fan governor sends by pwm signal;
Described sending module, specifically for sending described fan information by FG signal to described fan governor.
In conjunction with in the implementation that the second of the third aspect is possible, in the third possible implementation of the third aspect, the dutycycle of described fan identification request message is lower than the dutycycle of described starting fan desired signal.
In conjunction with the first of the third aspect and the third aspect to any one in the third possible implementation, in the 4th kind of possible implementation of the third aspect, described sending module, also for before sending fan information to described fan governor, send recognition and verification message to described fan governor.
Fourth aspect, provides a kind of fan governor, comprising:
Sending module, identifies request message for sending to fan;
Receiver module, for receiving the fan information that described fan sends;
Processing module, for fan according to the identification of described fan information.
In the first possible implementation of fourth aspect, described fan information comprises following any one or more: producer identifies; Controlled frequency; Operating voltage; Working current; Rotating speed; Air quantity; Noise.
In conjunction with the first possible implementation of fourth aspect or fourth aspect, in the implementation that the second of fourth aspect is possible, described fan is PWM fan;
Described sending module, specifically for sending described identification request message by pwm signal to described fan;
Described receiver module, specifically for the described fan information sent by fan described in FG Signal reception.
In conjunction with any one in implementation that the first and the second of fourth aspect and fourth aspect are possible, in the third possible implementation of fourth aspect, described processing module, also for receive at described receiver module described fan send fan information after, correctness verification is carried out to described fan information;
Described sending module, if be also correct for check results, then to described fan transmission and reception acknowledge message; If described result is mistake, then to described fan transmission and reception error message, and again send described identification request message to described fan.
5th aspect, provides a kind of fan, comprising: blower fan and flabellum; Described blower fan rotates for driving described flabellum;
Described fan also comprises: fan control module and fan information module;
Described fan control module, identifies request message for sending to described fan information module;
Described fan information module, for sending fan information to described fan control module;
Described fan control module, also for receiving described fan information, and according to the identification of described fan information fan, to send corresponding control signal to described blower fan, make described blower fan drive described flabellum to rotate.
In the first possible implementation in the 5th, described fan control module specifically for receiving radiating requirements information, and sends the control signal meeting described radiating requirements information to described blower fan according to described fan information.
In conjunction with the first possible implementation of the 5th aspect or the 5th aspect, in the implementation that the second in the 5th is possible, described fan information comprises following any one or more: producer identifies; Controlled frequency; Operating voltage; Working current; Rotating speed; Air quantity; Noise.
In conjunction with any one in implementation that the first and the second of the 5th aspect and the 5th aspect are possible, in the third the possible implementation in the 5th, described fan is PWM fan; Described fan control module is PWM controller.
6th aspect, provides a kind of electronic equipment, comprising: fan and fan governor, and treats radiating module;
The first comprising as the third aspect and the third aspect of described fan may fan as described in any one in implementation to the 4th kind;
The first comprising as fourth aspect and fourth aspect of described fan governor may fan governor as described in any one in implementation to the third;
To described, described fan governor also treats that radiating module dispels the heat for controlling described fan.
7th aspect, provides a kind of electronic equipment, comprising: fan, and treat radiating module;
Described fan comprise as the 5th aspect and the 5th aspect the first to the third may any one in implementation may fan as described in mode;
Described fan is used for treating that radiating module dispels the heat to described.
In the first possible implementation in the 7th, described electronic equipment also comprises processor, for sending radiating requirements information to described fan.
The fan of the embodiment of the present invention, fan governor, electronic equipment and fan recognition methods, fan governor communicates with fan, obtains fan information, identifies fan, achieve the automatic identification to fan, and then can ensure to the correct control of fan, fan normally to be run.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
A kind of fan recognition methods process flow diagram that Fig. 1 provides for the embodiment of the present invention;
The another kind of fan recognition methods process flow diagram that Fig. 2 provides for the embodiment of the present invention;
Fig. 3 is dutycycle and the rotation speed of the fan graph of a relation of pwm signal;
Another fan recognition methods process flow diagram that Fig. 4 provides for the embodiment of the present invention;
Another fan recognition methods process flow diagram that Fig. 5 provides for the embodiment of the present invention;
The fan recognition methods process flow diagram that Fig. 6 provides for the embodiment of the present invention;
The fan recognition methods process flow diagram that Fig. 7 provides for the embodiment of the present invention;
The structural representation of a kind of fan that Fig. 8 provides for the embodiment of the present invention;
The structural representation of a kind of fan governor that Fig. 9 provides for the embodiment of the present invention;
The structural representation of the another kind of fan that Figure 10 provides for the embodiment of the present invention;
The structural representation of a kind of electronic equipment that Figure 11 provides for the embodiment of the present invention;
The structural representation of the another kind of electronic equipment that Figure 12 provides for the embodiment of the present invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fan is generally used for the heat radiation of electronic equipment, and the air quantity of fan is factor radiating effect being played to directly impact.Fan comprises blower fan and flabellum, blower fan rotates according to control signal, and then drive flabellum to rotate, thus generation wind, to the rotating speed of the normally fan that the air quantity of fan has a direct impact, the rotating speed of fan is generally added up with the rotation of blower fan per minute week number, and unit is per minute/turn (revolutionsperminute, symbol rpm).By controlling the parameter such as frequency, voltage, electric current, signal dutyfactor of fan, the object changing rotation speed of the fan can be reached.
In the embodiment of the present invention, fan is by the communication with fan governor, the information relevant to fan control is sent to fan governor, thus make fan governor identification fan, and the control signal of fan is correctly set, avoid artificial cognition fan and fan governor is set and make mistakes, cause the problem of fan alarm, operation exception.Fan governor can be arranged on fan control board, also can be arranged at the optional position in the electronic equipment of provided with fan.The fan that the embodiment of the present invention provides, fan governor and fan recognition methods can be applied to any one electronic equipment needing to use fan.
A kind of fan recognition methods process flow diagram that Fig. 1 provides for the embodiment of the present invention, performed by fan, described method comprises:
101, receive the identification request message that fan governor sends.
Particularly, fan information controller is provided with in the fan that the embodiment of the present invention provides, for storing fan information, and communicate with fan governor, particularly, receive the identification request message that fan governor sends, and send the fan information stored to fan governor, thus fan governor is identified fan.
Before fan governor controls fan, need to identify fan, therefore first fan governor sends to fan and identifies request message.This fan can be communicated with fan governor by the signal wire of arbitrary form.Such as, usual PWM fan has 4 pins, be respectively power supply (power), (symbol: GND), pwm signal and fan normally indicate (symbol: FG) signal, wherein pwm signal pin is for receiving the pwm control signal of fan governor transmission, and FG signal pins is used for the indicator signal normally worked to fan governor transmission fan.In the embodiment of the present invention, if PWM fan, then can be received the identification request message of fan governor transmission by pwm signal pin.For other forms of fan, arbitrary pin that can receive the control signal of fan governor can be used to receive the identification request message of fan governor transmission, or a pin is newly set for receiving the identification request message of fan governor transmission.
102, send fan information, to make described fan governor according to described fan information identification fan to described fan governor.
Particularly, after fan information controller receives this identification request message, send fan information to fan governor.Such as, PWM fan can send fan information by FG signal pins to fan governor.For other forms of fan, arbitrary pin that can send information to fan governor can be used to send fan information to fan governor, or a pin can be newly set for sending fan information to fan governor.Fan information includes but not limited to any one or more as follows: producer's mark, controlled frequency, operating voltage, working current, rotating speed, air quantity, noise.
After fan governor receives fan information, will identify this fan according to fan information, thus identify this fan.Multiple fan control signal can be previously stored with, the fan control signal that different fan information can be corresponding different in fan governor.Such as, the fan of same manufacturer production can use identical control signal; Or the fan that rotating speed is identical uses identical control signal.Therefore after fan governor receives fan information, just can determine the control signal that fan is used, thus realize the identification to fan.
In addition, the default create-rule of fan control signal can also be preserved in fan governor, after the fan information receiving fan transmission, according to information such as operating voltage, working current, controlled frequency, rotating speed, air quantity, the control signal of fan can be generated according to default create-rule.Above-mentioned default create-rule is such as a computing formula, and fan information is substituted into the control signal that this computing formula can generate fan.
The embodiment of the present invention, sends fan information by fan to fan governor, fan governor is identified fan, achieves the automatic identification to fan.
Further, when fan sends fan information to fan governor, to make fan governor according to after described fan information identification fan, can also comprise: receive the control signal that fan governor sends according to fan information; Control flabellum according to control signal to rotate.
The another kind of fan recognition methods process flow diagram that Fig. 2 provides for the embodiment of the present invention, performed by fan, described method comprises:
201, receive the identification request message that fan governor sends.
202, send recognition and verification message to described fan governor.
Particularly, in the present embodiment, receive the identification request message of fan governor transmission at fan after, first send recognition and verification message to fan governor, then send fan information to fan governor.Identify that request message and recognition and verification message can be understood as the handshake between fan and fan governor, namely fan and fan governor are by identifying the mutual of request message and recognition and verification message, mutually learn and need to carry out fan identification.Further, time of reception window can be preset in fan governor, fan governor starts this time of reception window after transmission identifies request message, if in this time of reception window, namely before this time of reception window is closed, fan governor receives the recognition and verification message that fan sends, and represents and shakes hands successfully; Otherwise shake hands unsuccessfully, will think that this identifying is failed, fan governor can send identification request message again.
203, send fan information, to make described fan governor according to described fan information identification fan to described fan governor.
204, receive the confirmation of receipt message that described fan governor sends.
Particularly, after fan governor receives fan information, fan governor can also to fan transmission and reception confirmation.
Further, after step S203, can also comprise: if do not receive the confirmation of receipt message of fan governor transmission in Preset Time, fan can resend primary air fan information, also can wait for that fan governor resends identification request message.
Further, Fig. 1 and embodiment illustrated in fig. 2 in, if fan is PWM fan, then fan by pwm signal receive described fan governor send described identification request message; Fan sends described fan information by FG signal to described fan governor.
For PWM fan, there is certain relation in the pwm signal that fan governor sends and rotation speed of the fan, as shown in Figure 3, Fig. 3 is dutycycle and the rotation speed of the fan graph of a relation of pwm signal.In Fig. 3, horizontal ordinate is the dutycycle of pwm signal, represents with number percent; Ordinate is the rotating speed of fan, represents with number percent, and 100% represents that fan reaches maximum (top) speed.As can be seen from Figure 3, when the dutycycle of pwm signal is less than 20%, fan cannot start.For different PWM fans, the minimum duty cycle starting the signal of PWM fan is different, but all can there is a threshold value, and when the dutycycle of pwm signal is less than this threshold value, PWM fan can not start.
Therefore, Fig. 1 and embodiment illustrated in fig. 2 in, carry out between fan and fan governor identify mutual used identification request message, recognition and verification message and confirmation of receipt message above-mentioned dutycycle can be adopted to be less than the signal of threshold value.Like this when fan and fan governor carry out identifying mutual, fan can not start, but complete the transmission of fan information under the static state of fan.When fan governor is by after fan information identification fan, then send the control signal of the certain dutycycle corresponding to fan information, control fan and rotate.Like this, in fan identifying, the rotating speed of fan can be avoided not mate with fan information, even occur the problem of anomalous rotation.
Another fan recognition methods process flow diagram that Fig. 4 provides for the embodiment of the present invention, performed by fan governor, described method comprises:
401, send to fan and identify request message.
Particularly, fan governor sends to fan and identifies request message.
The fan governor that the embodiment of the present invention provides can be arranged on the fan control board of provided with fan in electronic equipment, also can be the arbitrary processor controlling fan in electronic equipment.
Before fan governor controls fan, need to identify fan, therefore first fan governor sends to fan and identifies request message.Fan governor can be communicated with fan by the signal wire of arbitrary form.Such as, usual PWM fan has 4 pins, connect respectively power supply, pwm signal and FG signal, the wherein pwm control signal that sends for receiving fan governor of pwm signal pin, FG signal pins is used for sending to fan governor the indicator signal that fan normally works.In embodiments of the present invention, if PWM fan, then fan governor just can send identification request message by pwm signal pin to fan.For other forms of fan, fan governor can use arbitrary pin that can transmit control signal to fan to send and identify request message, or can reset a pin on fan, fan governor sends identification request message by this pin to fan.
402, receive the fan information that described fan sends.
Particularly, fan governor will receive the fan information of fan transmission.Such as, if PWM fan, fan governor can receive the fan information of fan transmission by FG signal pins.For other forms of fan, fan governor can use arbitrary pin that can receive fan transmission information to receive fan and send fan information, or can reset a pin on fan, fan governor receives the fan information of fan transmission by this pin.Fan information includes but not limited to any one or more as follows: producer's mark, controlled frequency, operating voltage, working current, rotating speed, air quantity, noise.
403, fan according to the identification of described fan information.
Particularly, after fan governor receives fan information, will identify fan according to fan information.
Further, multiple fan control signal can be previously stored with in fan governor, the fan control signal that different fan information can be corresponding different.Such as, the fan of same manufacturer production can use identical control signal; Or the fan that rotating speed is identical uses identical control signal.When fan governor receives fan information, after identifying described fan, the control signal that fan is used can be determined, thus realize the correct control to fan.
In addition, the default create-rule of fan control signal can also be preserved in fan governor, after the fan information receiving fan transmission, according to information such as operating voltage, working current, controlled frequency, rotating speed, air quantity, the control signal of fan can be generated according to default create-rule.
In the present embodiment, fan governor sends to fan and identifies request message, and receives the fan information of fan transmission, identifies, thus realize the automatic identification of fan according to fan information to fan.
Further, after fan governor is according to fan information identification fan, can also comprise: generate control signal according to fan information; Send described control signal to fan, drive flabellum to rotate to make fan according to control signal.
Another fan recognition methods process flow diagram that Fig. 5 provides for the embodiment of the present invention, performed by fan governor, described method comprises:
501, send to fan and identify request message.
502, in default time of reception, receive the recognition and verification message that described fan sends.
503, if the recognition and verification message not receiving the transmission of described fan in default time of reception, then again send described identification request message to described fan.
Particularly, in the present embodiment, after fan governor sends identification request message to fan, first receive the recognition and verification message that fan sends, namely fan confirms to receive this identification request message.Identify that request message and recognition and verification message can be understood as the handshake between fan and fan governor, namely fan and fan governor are by identifying the mutual of request message and recognition and verification message, mutually learn and need to carry out fan identification.Time of reception window can be preset in fan governor, fan governor starts this time of reception window after transmission identifies request message, if in this time of reception window, before namely this time of reception window is closed, fan governor receives the recognition and verification message that fan sends, and represents and shakes hands successfully; Otherwise shake hands unsuccessfully, will think that this identifying is failed, fan governor can send identification request message again.
504, receive the fan information that described fan sends.
505, correctness verification is carried out to described fan information.
Particularly, after fan governor receives the fan information of fan transmission, can also check the correctness of fan information, namely correctness verification be carried out to fan information.Usually, parity checking can be carried out to fan information, or cyclic redundancy check (CRC) code (CyclicRedundancyCheck is called for short CRC) also can be adopted to verify.If check results is correct, then perform step 506, otherwise perform step 507.
506, if check results is correct, then to described fan transmission and reception acknowledge message.
Particularly, if the check results that fan governor carries out correctness verification to fan information is correct, then fan governor is to fan transmission and reception acknowledge message, continues to perform step 508.
507, if check results is mistake, then to described fan transmission and reception error message.
Particularly, if the check results that fan governor carries out correctness verification to fan information is mistake, then fan governor is to fan transmission and reception error message; Fan governor again can send to described fan and identify request message, and restart fan identification process, namely fan governor re-executes step 501 ~ 505.
508, fan according to the identification of described fan information.
Further, in the embodiment shown in figs. 4 and 5, if fan is PWM fan, then fan governor sends identification request message by pwm signal to fan; The fan information that fan governor is sent by FG Signal reception fan.
For PWM fan, there is certain relation in the pwm signal that fan governor sends and rotation speed of the fan, for different PWM fans, the minimum duty cycle starting the signal of PWM fan is different, but all can there is a threshold value, when the dutycycle of pwm signal is less than this threshold value, PWM fan can not start.Therefore, in the embodiment shown in figs. 4 and 5, carry out between fan and fan governor identifying that mutual used identification request message, recognition and verification message and confirmation of receipt message can adopt above-mentioned dutycycle to be less than the signal of threshold value.Like this when fan and fan governor carry out identifying mutual, fan can not start, but complete the transmission of fan information under the static state of fan.When fan governor is by after fan information identification fan, then send the control signal of the certain dutycycle corresponding to fan information, control fan and rotate.Like this, in fan identifying, the rotating speed of fan can be avoided not mate with fan information, even occur the problem of anomalous rotation.
Below for PWM fan, the fan recognition methods that the various embodiments described above provide is described in detail.The fan recognition methods process flow diagram that Fig. 6 provides for the embodiment of the present invention, the fan recognition methods process flow diagram that Fig. 7 provides for the embodiment of the present invention.Fig. 6 and embodiment illustrated in fig. 7 in fan be PWM fan, fan governor is controlled PWM fan by pwm signal, and by the signal that FG Signal reception fan sends, wherein the signal dutyfactor of PWM fan and rotation speed of the fan relation are as shown in Figure 3.
As shown in Figure 6 and Figure 7, in step 601, the pwm signal of fan governor output duty cycle 5% and 10% replaces three times.Simultaneously in step 701, the pwm signal receiving dutycycle 5% and 10% is replaced three times by PWM fan.As can be seen from Figure 3, PWM fan, when receiving the pwm signal of dutycycle lower than 20%, can not start.Therefore, when the pwm signal that PWM fan receives dutycycle 5% and 10% replaces three times, PWM fan can not start.The pwm signal of dutycycle 5% and 10% replaces can be thought for three times a kind of to identify request message, and namely fan governor replaces three requests to the pwm signal that PWM fan sends dutycycle 5% and 10% and identifies fan.The pwm signal that this identification request message is not limited to dutycycle 5% and 10% replaces three these a kind of forms, and fan governor and PWM fan also can arrange other forms of identification request message, can ensure that this identification request message can not start fan.In step 601, the pwm signal that fan governor exports can adopt the frequency of 1kHz.
In a step 702, after the pwm signal receiving dutycycle 5% and 10% when PWM fan replaces three times, FG signal drags down and keeps 100ms by PWM fan, namely fan keeps FG signal output low level 100ms, as the recognition and verification message sent to fan governor, notice fan governor has received fan identification request, will send fan information to fan governor.In step 602, whether fan governor detection FG signal is dragged down and is kept 100ms.Fan governor can at a time of reception window, such as 300ms, interior detection FG signal, such as, opens this time of reception window after the pwm signal of fan governor output duty cycle 5% and 10% in step 701 replaces three times, detects in this time of reception window to FG signal.If find that FG signal is dragged down and keeps 100ms in this time of reception window, then confirm that PWM fan has received the identification request message of fan governor transmission, continue to perform step 703.If fan governor does not find that FG signal is dragged down and keeps 100ms in this time of reception window, again can send to PWM fan and identify request message, namely re-execute step 601.
In step 703, PWM fan sends fan information by FG signal, alternatively, waits for fan governor transmission and reception acknowledge message.In step 603, fan governor by FG Signal reception fan information, and carries out correctness verification to the fan information received, and such as, carries out parity checking to fan information.
If check results is correct, then fan governor is to PWM fan transmission and reception acknowledge message, namely performs step 604, such as, is dragged down by pwm signal and keep 100ms, and namely fan governor keeps pwm signal output low level 100ms, as confirmation of receipt message.If PWM fan is after sending data, find that pwm signal keeps output low level 100ms, then PWM fan thinks that the automatic identifying of this fan terminates.
If check results is mistake, then fan governor will resend fan identification request, start fan identification process, namely re-execute step 601 ~ 603.Alternatively, fan governor can also to PWM fan transmission and reception error message, and pwm signal is drawn high and kept 100ms by such as fan governor, and namely fan governor keeps pwm signal to export high level 100ms, as described reception error message.
If PWM fan is after sending fan information, does not find that pwm signal keeps output low level 100ms, namely do not receive confirmation of receipt message; Or find that pwm signal keeps exporting high level 100ms, namely receive this reception error message, then PWM fan can the identification request message that sends to fan governor of wait-receiving mode again, also can send once described fan information again.
In step 605, fan governor according to this PWM fan of fan information identification received, and determines to control the control signal that this PWM fan uses, and completes automatic identification and the control of PWM fan.
Such as, described fan information controller can preserve fan type information table as shown in table 1.
Table 1 fan information table
| Type | Value |
| Producer | XX company |
| Controlled frequency | 1kHz |
| Operating voltage | Direct current 7V-12V |
| Working current | 0.41A (maximum 0.48A) |
| Rotation speed of the fan | 4500rpm |
| Air quantity | 68CFM |
| Noise | 48dB |
The fan of part shown in table 1 information, Fig. 6 and embodiment illustrated in fig. 7 in, fan includes but not limited to any one information in table 1 to the fan information that fan governor sends.It can be wherein the storage space of the dissimilar different size of fan information distribution.The unit of rotation speed of the fan is rpm, and the unit of air quantity is cubic feet/min (English: cubicfeetperminute, symbol: CFM), and the unit of noise is decibel (symbol: dB).
It should be noted that, the fan recognition methods shown in the various embodiments described above of the present invention is not only applicable to PWM fan, is also applicable to the fan that other can be regulated by the rotating speed of regulable control signal to fan.Such as voltage-controlled fan, for voltage-controlled fan, for it provides different supply voltages, then the rotating speed of fan is by difference, and in the range of nominal tension of fan, the higher then rotating speed of voltage is higher.According to the fan recognition methods that the embodiment of the present invention provides, then in voltage-controlled fan, be provided with corresponding fan information, also the corresponding relation (or fan governor can generate the corresponding relation of supply voltage and rotating speed according to fan information) of different fan supply voltage and rotating speed is preset with in fan governor, after fan governor obtains fan information, can identify fan, and then use different supply voltage control fans to rotate.
The structural representation of a kind of fan that Fig. 8 provides for the embodiment of the present invention, as shown in Figure 8, the fan of the present embodiment comprises:
Blower fan 81 and flabellum 82, blower fan 81 rotates for driving flabellum 82.
Receiver module 83, for receiving the identification request message that fan governor sends.
Sending module 84, for sending fan information, to make described fan governor according to described fan information identification fan to described fan governor.
The fan that the present embodiment provides is for realizing the technical scheme of embodiment of the method shown in Fig. 1, and it realizes principle and technique effect is similar, described in embodiment of the method shown in reference diagram 1, can repeat no more herein.
Further, in the embodiment shown in fig. 8, described fan information comprises following any one or more: producer's mark, controlled frequency, operating voltage, working current, rotating speed, air quantity, noise.
Further, in the embodiment shown in fig. 8, can be PWM fan; Then receiver module 83, specifically for receiving the described identification request message that described fan governor sends by pwm signal; Sending module 84, specifically for sending described fan information by FG signal to described fan governor.Correspondingly, the dutycycle of described fan identification request message is lower than the dutycycle of described starting fan desired signal.
Further, in the embodiment shown in fig. 8, receiver module 83, also for receiving the control signal that described fan governor sends according to described fan information; Blower fan 81, also for driving flabellum 82 to rotate according to described control signal.
Further, in the embodiment shown in fig. 8, sending module 84, also for before sending fan information to described fan governor, sends recognition and verification message to described fan governor.
Further, in the embodiment shown in fig. 8, receiver module 83, if also for not receiving the confirmation of receipt message that described fan governor sends in Preset Time, then again receive the described identification request message that described fan governor sends.
The structural representation of a kind of fan governor that Fig. 9 provides for the embodiment of the present invention, as shown in Figure 9, the fan governor of the present embodiment comprises:
Sending module 91, identifies request message for sending to fan.
Receiver module 92, for receiving the fan information that described fan sends.
Processing module 93, for fan according to the identification of described fan information.
The fan governor that the present embodiment provides is for realizing the technical scheme of embodiment of the method shown in Fig. 4, and it realizes principle and technique effect is similar, described in embodiment of the method shown in reference diagram 4, can repeat no more herein.
Further, in the embodiment shown in fig. 9, described fan information comprises following any one or more: producer's mark, controlled frequency, operating voltage, working current, rotating speed, air quantity, noise.
Further, in the embodiment shown in fig. 9, described fan comprises PWM fan; Sending module 91, specifically for sending described identification request message by pwm signal to described fan; Receiver module 92, specifically for the described fan information sent by fan described in FG Signal reception.
Further, in the embodiment shown in fig. 9, the dutycycle of described fan identification request message is lower than the dutycycle of described starting fan desired signal.
Further, in the embodiment shown in fig. 9, processing module 93, also for generating control signal according to described fan information; Sending module 91, also for sending described control signal to described fan, drives flabellum to rotate to make described fan according to described control signal.
Further, in the embodiment shown in fig. 9, receiver module 92, also for before the fan information receiving the transmission of described fan, receives the recognition and verification message that described fan sends.
Further, in the embodiment shown in fig. 9, sending module 91, also for after sending identification request message to fan, if described receiver module 92 does not receive the recognition and verification message that described fan sends in default time of reception, then again send described identification request message to described fan.
Further, in the embodiment shown in fig. 9, processing module 93, also for receive at receiver module 92 described fan send fan information after, correctness verification is carried out to described fan information; Sending module 91, if be also correct for check results, to described fan transmission and reception acknowledge message; If check results is mistake, to described fan transmission and reception error message, and again send described identification request message to described fan.
The structural representation of the another kind of fan that Figure 10 provides for the embodiment of the present invention, the fan of the present embodiment comprises: blower fan 111 and flabellum 112, and blower fan 111 rotates for driving flabellum 112; The fan that the present embodiment provides, on basis embodiment illustrated in fig. 8, also comprises fan control module 113 and fan information module 114, can realize automatically identifying and controlling.Like this, the electronic equipment of this fan is installed, without the need to providing extra fan control board, only need radiating requirements information, the information such as such as air quantity, temperature, rotating speed send to the fan in the present embodiment, fan can generate control signal automatically in inside, and control blower fan and drive flabellum to rotate, generation meets the air quantity of radiating requirements thus reaches radiating effect.
Fan controller module 113, identifies request message for sending to fan information module 114.
Fan information module 114, for sending fan information to fan controller module 113.
Fan controller module 113, also for receiving described fan information, and according to the identification of described fan information fan, to send corresponding control signal to blower fan 111, make blower fan 111 drive flabellum 112 to rotate.
Particularly, in the fan that the present embodiment provides, fan controller module 113 is for completing the function identical with shown fan governor embodiment illustrated in fig. 9.By other modules except fan controller module 113 integrally, then this entirety for complete with embodiment illustrated in fig. 8 shown in the identical function of fan.Fan controller module 113, for receiving the radiating requirements information of electronic equipment, identifies fan and controls fan and reach corresponding radiating effect.The fan that the application embodiment of the present invention provides, no longer need to arrange fan control board in the electronic equipment of then provided with fan, but radiating requirements information can be sent by any control chip in electronic equipment to fan, then fan can teaching display stand identification, and carry out rotating thus reach corresponding radiating effect.
The fan that the present embodiment provides, can make not need to arrange fan control board in electronic equipment, thus save the space in electronic equipment.
Further, in the embodiment shown in fig. 10, fan control module 113 is specifically for receiving radiating requirements information, send described identification request message to fan information module 114 and receive described fan information, fan according to the identification of described fan information, to send the control signal meeting described radiating requirements information to blower fan 111.
Further, in the embodiment shown in fig. 10, described fan information comprises following any one or more: producer's mark, controlled frequency, operating voltage, working current, rotating speed, air quantity, noise.
Alternatively, in the embodiment shown in fig. 10, described fan is PWM fan; Fan control module 113 is PWM controller.
The structural representation of a kind of electronic equipment that Figure 11 provides for the embodiment of the present invention, as shown in figure 11, the electronic equipment of the present embodiment comprises fan 121, fan governor 122 and treats radiating module 123.
Its fan 121 is for realizing the technical scheme of embodiment of the method as shown in Figure 1 or 2, and fan governor 122 is for realizing the technical scheme of embodiment of the method as shown in Fig. 4 or Fig. 5.Fan 121 can adopt the concrete structure of fan as shown in Figure 8, and its structure and principle of work described in the embodiment shown in reference diagram 8, can repeat no more herein.In the present embodiment, be specially PWM fan for fan 121 to be described.
As shown in figure 11, when fan 121 is PWM fan, fan 121 can comprise: blower fan 124, flabellum 125, PWM controller 126 and fan information controller 127.Wherein blower fan 124 rotates for driving flabellum 125, the identification request message that fan information controller 127 sends for receiving fan governor 122, fan information is sent, to make fan governor 122 according to described fan information identification fan 121 to fan governor 122.The control signal that PWM controller 126 sends for receiving fan governor 122, to send corresponding control signal to blower fan 124, makes blower fan 124 drive flabellum 125 to rotate.Thus achieve fan governor 122 and control fan 121 and treat radiating module 123 and dispel the heat.
Wherein, PWM controller 126 and fan information controller 127 can for being arranged on two chips in fan 121, or PWM controller 126 and fan information controller 127 can for being arranged on two functional modules in the same chip in fan 121.
When fan 121 is PWM fan, fan 121 is for realizing the technical scheme of embodiment of the method as shown in Figure 7, and fan governor 122 is for realizing the technical scheme of embodiment of the method as shown in Figure 6.
The embodiment of the present invention also provides another kind of electronic equipment, comprises fan 131 and treats radiating module 132.
Fan 131 dispels the heat for treating radiating module 132.Its fan 131 can adopt the concrete structure of fan as shown in Figure 10, and its structure and principle of work with reference to described in the embodiment shown in Figure 10, can repeat no more herein.
Further, this electronic equipment also comprises processor 133, for sending radiating requirements information to fan 131.As shown in figure 12, the structural representation of the another kind of electronic equipment that Figure 12 provides for the embodiment of the present invention, wherein processor 133 can be the arbitrary processor in electronic equipment, comprises central processing unit.
The electronic equipment that the present embodiment provides, only need send radiating requirements information by processor to fan, fan gets final product teaching display stand identification, thus automatically generates control signal in fan inside, produces corresponding air quantity and is effective.
One of ordinary skill in the art will appreciate that: all or part of step realizing above-mentioned each embodiment of the method can have been come by the hardware that programmed instruction is relevant.Aforesaid program can be stored in a computer read/write memory medium.This program, when performing, performs the step comprising above-mentioned each embodiment of the method; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (25)
1. a fan recognition methods, is characterized in that, comprising:
Receive the identification request message that fan governor sends;
Fan information is sent, to make described fan governor according to described fan information identification fan to described fan governor.
2. method according to claim 1, is characterized in that, described fan information comprises following any one or more:
Producer identifies;
Controlled frequency;
Operating voltage;
Working current;
Rotating speed;
Air quantity;
Noise.
3. method according to claim 1 and 2, is characterized in that, described fan is pulse width modulation (PWM) fan;
The identification request message that described reception fan governor sends, comprising:
The described identification request message of described fan governor transmission is received by pwm signal;
Described to described fan governor transmission fan information, comprising:
FG signal is normally indicated to send described fan information to described fan governor by fan.
4. method according to claim 3, is characterized in that, also comprises:
The dutycycle of described fan identification request message is lower than the dutycycle of described starting fan desired signal.
5. the method according to any one of Claims 1 to 4, is characterized in that, described before described fan governor transmission fan information, described method also comprises:
Recognition and verification message is sent to described fan governor.
6. a fan recognition methods, is characterized in that, comprising:
Send to fan and identify request message;
Receive the fan information that described fan sends;
Fan according to the identification of described fan information.
7. method according to claim 6, is characterized in that, described fan information comprises following any one or more:
Producer identifies;
Controlled frequency;
Operating voltage;
Working current;
Rotating speed;
Air quantity;
Noise.
8. the method according to claim 6 or 7, is characterized in that, described fan is pulse width modulation (PWM) fan;
Described transmission to fan identifies request message, comprising:
Described identification request message is sent to described fan by pwm signal;
The fan information that the described fan of described reception sends, comprising:
By the described fan information that fan normally indicates fan described in FG Signal reception to send.
9. the method according to any one of claim 6 ~ 8, is characterized in that, after the fan information that the described fan of described reception sends, also comprises:
Correctness verification is carried out to described fan information;
If check results is correct, then to described fan transmission and reception acknowledge message;
If check results is mistake, then to described fan transmission and reception error message, and again send described identification request message to described fan.
10. a fan, is characterized in that, comprising: blower fan and flabellum, and described blower fan rotates for driving described flabellum; Described fan also comprises:
Receiver module, for receiving the identification request message that fan governor sends;
Sending module, for sending fan information, to make described fan governor according to described fan information identification fan to described fan governor.
11. fans according to claim 10, is characterized in that, described fan information comprises following any one or more:
Producer identifies;
Controlled frequency;
Operating voltage;
Working current;
Rotating speed;
Air quantity;
Noise.
12. fans according to claim 10 or 11, it is characterized in that, described fan is pulse width modulation (PWM) fan;
Described receiver module, specifically for receiving the described identification request message that described fan governor sends by pwm signal;
Described sending module, sends described fan information specifically for normally being indicated FG signal by fan to described fan governor.
13. fans according to claim 12, is characterized in that, also comprise:
The dutycycle of described fan identification request message is lower than the dutycycle of described starting fan desired signal.
14. fans according to any one of claim 10 ~ 13, is characterized in that, described sending module, also for before sending fan information to described fan governor, send recognition and verification message to described fan governor.
15. 1 kinds of fan governors, is characterized in that, comprising:
Sending module, identifies request message for sending to fan;
Receiver module, for receiving the fan information that described fan sends;
Processing module, for fan according to the identification of described fan information.
16. fan governors according to claim 15, is characterized in that, described fan information comprises following any one or more:
Producer identifies;
Controlled frequency;
Operating voltage;
Working current;
Rotating speed;
Air quantity;
Noise.
17. fan governors according to claim 15 or 16, it is characterized in that, described fan is pulse width modulation (PWM) fan;
Described sending module, specifically for sending described identification request message by pwm signal to described fan;
Described receiver module, specifically for the described fan information normally being indicated fan described in FG Signal reception to send by fan.
18. fan governors according to any one of claim 15 ~ 17, is characterized in that, described processing module, also for after receive fan information that described fan sends at described receiver module, carry out correctness verification to described fan information;
Described sending module, if be also correct for check results, then to described fan transmission and reception acknowledge message; If check results is mistake, then to described fan transmission and reception error message, and again send described identification request message to described fan.
19. 1 kinds of fans, is characterized in that, comprising: blower fan and flabellum; Described blower fan rotates for driving described flabellum;
Described fan also comprises: fan control module and fan information module;
Described fan control module, identifies request message for sending to described fan information module;
Described fan information module, for sending fan information to described fan control module;
Described fan control module, also for receiving described fan information, and according to the identification of described fan information fan, to send corresponding control signal to described blower fan, make described blower fan drive described flabellum to rotate.
20. fans according to claim 19, it is characterized in that, described fan control module is specifically for receiving radiating requirements information, send described identification request message to described fan information module and receive described fan information, fan according to the identification of described fan information, to send the control signal meeting described radiating requirements information to described blower fan.
21. fans according to claim 19 or 20, it is characterized in that, described fan information comprises following any one or more:
Producer identifies;
Controlled frequency;
Operating voltage;
Working current;
Rotating speed;
Air quantity;
Noise.
22. fans according to any one of claim 19 ~ 21, it is characterized in that, described fan is pulse width modulation (PWM) fan; Described fan control module is PWM controller.
23. 1 kinds of electronic equipments, is characterized in that, comprising: the fan as described in any one of claim 10 ~ 14 and the fan governor as described in any one of claim 15 ~ 18, and treat radiating module;
To described, described fan governor also treats that radiating module dispels the heat for controlling described fan.
24. 1 kinds of electronic equipments, is characterized in that, comprising: the fan as described in any one of claim 19 ~ 22, and treat radiating module;
Described fan is used for treating that radiating module dispels the heat to described.
25. electronic equipments according to claim 24, is characterized in that, also comprise processor, for sending radiating requirements information to described fan.
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