TW201533326A - Synchronizing method of fan rotational speed - Google Patents
Synchronizing method of fan rotational speed Download PDFInfo
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- TW201533326A TW201533326A TW103105767A TW103105767A TW201533326A TW 201533326 A TW201533326 A TW 201533326A TW 103105767 A TW103105767 A TW 103105767A TW 103105767 A TW103105767 A TW 103105767A TW 201533326 A TW201533326 A TW 201533326A
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Abstract
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本發明係有關於一種風扇轉速同步方法，尤指一種可提供轉速同步與降低風扇運轉噪音之風扇轉速同步方法。
The invention relates to a method for synchronizing a fan speed, in particular to a method for synchronizing a fan speed which can provide speed synchronization and reduce fan running noise.
隨著科技的進步，人們對於各種電子設備的依賴性亦隨之增加；然而，又為了符合輕便性與實用性之考量，目前市面上的電子產品在設計上，往往都趨向以輕薄短小、功能多、且處理速度快來做為設計的主軸，以便製作的產品能更符合現代社會的生活需求，又為了符合輕便性與實用性之考量，目前市面上的電子產品(如電腦、筆記型電腦)在設計上，往往都趨向以輕薄短小、功能多、並以處理速度快來做為設計的主軸，便以製作的產品能更符合現代社會的生活需求。
為了提昇散熱風扇的效果，在傳統的風扇控制中，系統廠商往往會設計成當電子產品溫度上升時，便增加風扇的轉速，以加速散熱的效果。典型的方式，係藉著對電子產品進行溫度偵測，再隨著所偵測的溫度，經由一風扇控制器，來控制風扇的轉速。一般來說，藉由脈波寬度調變(PWM)責任比或是電壓的輸出，便可控制風扇的轉速；又或有時單一風扇所能提供之風力可能會不足，因此常常會將兩顆或是兩顆以上的風扇加以串接組裝並用，以能夠提供足夠之風力。
又，其經由串接組裝之風扇組合在運轉時雖提供有相同之輸入條件，但會因為風扇轉速不相同或差異而產生相互干擾，影響和周圍流場分佈而出現兩風扇間之轉速偏差且不同步，而在不同步之情況產生時，其相互干擾產生之噪音頻譜增加而無法消除，更且其風扇運轉不同步也會影響其風扇運轉效率；故習知具有下列之缺點：
1.轉速偏差不同步；
2.無法減少噪音。
是以，要如何解決上述習用之問題與缺失，即為本案之發明人與從事此行業之相關廠商所亟欲研究改善之方向所在者。
With the advancement of technology, people's dependence on various electronic devices has also increased; however, in order to meet the considerations of portability and practicability, the current electronic products on the market tend to be light, thin, and functional. More and more processing speed as the main axis of the design, so that the products can be more in line with the needs of modern society, and in order to meet the consideration of portability and practicality, currently on the market electronic products (such as computers, notebook computers) In terms of design, it tends to be a short, light, short, functional, and processing speed as the main axis of the design, so that the products can be more in line with the needs of modern society.
In order to improve the effect of the cooling fan, in the conventional fan control, the system manufacturer is often designed to increase the fan speed when the temperature of the electronic product rises, so as to accelerate the heat dissipation effect. Typically, the temperature of the electronic product is detected, and the fan speed is controlled via a fan controller along with the detected temperature. In general, the fan speed can be controlled by the pulse width modulation (PWM) duty ratio or the voltage output; or sometimes the wind provided by a single fan may be insufficient, so two will often be Or two or more fans can be assembled and used in series to provide sufficient wind.
Moreover, the fan combination assembled in series is provided with the same input conditions during operation, but mutual interference occurs due to different fan speeds or differences, and the rotational speed deviation between the two fans occurs due to the influence and the surrounding flow field distribution. It is not synchronized, and when it is not synchronized, the noise spectrum generated by mutual interference increases and cannot be eliminated, and the fan running out of synchronization also affects the fan operating efficiency; therefore, the following disadvantages are known:
1. The speed deviation is not synchronized;
2. Can't reduce noise.
Therefore, how to solve the above problems and problems in the past, that is, the inventors of this case and the relevant manufacturers engaged in this industry are eager to study the direction of improvement.
爰此，為有效解決上述之問題，本發明之主要目的係提供一種可控制風扇同步之風扇轉速同步方法。
本發明之次要目的，係在提供一種可降低風扇運轉噪音之風扇轉速同步方法。
本發明之次要目的，係在提供一種可提升風扇運轉效率之風扇轉速同步方法。
為達上述目的，本發明係提供一種風扇轉速同步方法，應用於相互對接之第一風扇與第二風扇，其包括步驟：
透過一第一霍爾感測器感測由第一風扇轉速產生之脈波週期寬度，且將其脈波週期寬度轉換成第一脈波訊號並傳送至一微處理器；
另透過一第二霍爾感測器感測由第二風扇轉速產生之脈波週期寬度，且將其脈波週期寬度轉換成第二脈波訊號並傳送至所述微處理器；
該微處理器對該第一風扇轉速與第二風扇轉速之脈波週期寬度對應之第一脈波訊號與第二脈波訊號進行比較；
該微處理器根據第一脈波訊號與第二脈波訊號之大小差異產生一脈波調變訊號至第二風扇；
所述微處理器經由所述脈波調變訊號控制第二風扇轉速與第一風扇轉速相等。
藉由本發明此方法之設計，可有效控制風扇轉速同步，且同時可降低風扇運轉噪音的效果者。
Accordingly, in order to effectively solve the above problems, the main object of the present invention is to provide a method for synchronizing a fan speed that can control fan synchronization.
A secondary object of the present invention is to provide a method for synchronizing a fan speed that reduces fan operation noise.
A secondary object of the present invention is to provide a fan speed synchronization method that can improve fan operating efficiency.
To achieve the above objective, the present invention provides a method for synchronizing a fan speed, which is applied to a first fan and a second fan that are butted to each other, and includes the steps of:
Sensing a pulse period width generated by the first fan speed through a first Hall sensor, and converting the pulse period width thereof into a first pulse signal and transmitting the signal to a microprocessor;
Transducing a pulse period width generated by the second fan rotation speed through a second Hall sensor, and converting the pulse wave period width into a second pulse wave signal and transmitting the pulse signal to the microprocessor;
The microprocessor compares the first pulse wave signal corresponding to the pulse wave period width of the second fan rotation speed with the second pulse wave signal;
The microprocessor generates a pulse modulation signal to the second fan according to the difference between the first pulse signal and the second pulse signal;
The microprocessor controls the second fan speed to be equal to the first fan speed via the pulse modulation signal.
By the design of the method of the invention, the fan speed synchronization can be effectively controlled, and at the same time, the effect of the fan running noise can be reduced.
1‧‧‧第一風扇
2‧‧‧第二風扇
3‧‧‧第一霍爾感測器
4‧‧‧第二霍爾感測器
5‧‧‧微處理器1‧‧‧First fan
2‧‧‧second fan
3‧‧‧First Hall Sensor
4‧‧‧Second Hall sensor
5‧‧‧Microprocessor
第1圖係為本發明較佳實施例之方塊示意圖；
第2圖係為本發明較佳實施例之步驟流程圖。
1 is a block diagram of a preferred embodiment of the present invention;
Figure 2 is a flow chart showing the steps of a preferred embodiment of the present invention.
本發明之上述目的及其結構與功能上的特性，將依據所附圖式之較佳實施例予以說明。
請參閱第1圖及第2圖所示，係為本發明風扇轉速同步方法較佳實施例之方塊示意圖與步驟流程圖，如圖所示，一種風扇轉速同步方法係應用於相互對接之第一風扇1與第二風扇2，其包括步驟：
步驟S1，透過一第一霍爾感測器感測由第一風扇轉速產生之脈波週期寬度，且將其脈波週期寬度轉換成第一脈波訊號並傳送至一微處理器；
其中所述第一風扇1運轉時其定子組會產生有脈波週期，其脈波週期也依照所述第一風扇1之轉速狀況而產生有不同之脈波週期寬度，並透過一第一霍爾感測器3感測由第一風扇轉速產生之脈波週期寬度，所述第一霍爾感測器3感測所述第一風扇轉速產生之脈波週期寬度並將其脈波週期寬度轉換成第一脈波訊號，且將其第一脈波訊號傳送至一微處理器5。
步驟S2，另透過一第二霍爾感測器感測由第二風扇轉速產生之脈波週期寬度；
其中所述第二風扇2運轉時其定子組會產生有脈波週期，其脈波週期也依照所述第二風扇2之轉速狀況而產生有不同之脈波週期寬度，並透過一第二霍爾感測器4感測由第二風扇轉速產生之脈波週期寬度，所述第二霍爾感測器4感測所述第二風扇轉速產生之脈波週期寬度並將其脈波週期寬度轉換成第二脈波訊號，且將其第二脈波訊號傳送至所述微處理器5。
步驟S3，該微處理器對第一風扇轉速與第二風扇轉速之脈波週期寬度對應之第一脈波訊號與第二脈波訊號進行比較；
所述微處理器5接收所述第一霍爾感測器3與第二霍爾感應器4之第一脈波訊號與第二脈波訊號，並針對其第一風扇轉速與第二風扇轉速之脈波週期寬度對應之第一脈波訊號與第二脈波訊號進行比較。
步驟S4，該微處理器根據第一脈波訊號與第二脈波訊號之大小差異產生一脈波調變訊號至第二風扇；
所述微處理器5針對所述第一脈波訊號與第二脈波訊號有差異時會產生一脈波調變訊號，且將所述脈波調變訊號送至第二風扇2。
當第一脈波訊號大於第二脈波訊號時，此時執行步驟S5，該微處理器經由脈波調變訊號增大所述第二風扇轉速產生之脈波週期寬度；當第一脈波訊號小於第二脈波訊號時，此時執行步驟S6，該微處理器經由脈波調變訊號減少所述第二風扇轉速產生之脈波週期寬度；當第一脈波訊號等於第二脈波訊號時，此時執行步驟S7，該微處理器經由脈波調變訊號保持所述第二風扇轉速產生之脈波週期寬度。
其中所述微處理器5比較所述第一脈波訊號與第二脈波訊號，若其第一脈波訊號之脈波週期寬度大於第二脈波訊號之脈波週期寬度時，其微處理器5則經由脈波調變訊號增大所述第二風扇轉速所產生之脈波週期寬度，使其第二風扇轉速所產生之脈波週期寬度與第一脈波訊號之脈波週期寬度相等，並進而控制其第二風扇轉速與第一風扇轉速相等。
若其第一脈波訊號之脈波週期寬度小於第二脈波訊號之脈波週期寬度時，其微處理器5則經由脈波調變訊號減少所述第二風扇轉速所產生之脈波週期寬度，使其第二風扇轉速所產生之脈波週期寬度與第一脈波訊號之脈波週期寬度相等，並進而控制其第二風扇轉速與第一風扇轉速相等。
若其第一脈波訊號之脈波週期寬度等於第二脈波訊號之脈波週期寬度時，其微處理器5則經由脈波調變訊號保持所述第二風扇2轉速所產生之脈波週期寬度，維持其第二風扇轉速所產生之脈波週期寬度與第一脈波訊號之脈波週期寬度相等，並令其第二風扇轉速與第一風扇轉速相等。
步驟S8，所述微處理器經由所述脈波調變訊號控制第二風扇轉速與第一風扇轉速相等。
所述微處理器5經由比對後之差異產生之脈波調變訊號去控制第二風扇轉速，使其第二風扇轉速與第一風扇轉速相等。
藉此，所述相互對接之第一風扇1與第二風扇2於相互運轉時，可透過所述第一霍爾感測器3與第二霍爾感測器4與微處理器5控制其第一風扇1與第二風扇2以相同的轉速同步運轉，且有效降低風扇間因轉速不同而產生噪音之問題。
以上所述，本發明相較於習知具有下列優點：
1.風扇間以相同的轉速同步運轉；
2.有效降低風扇間因轉速不同而產生噪音之問題；
3.提升風扇運轉效率。
按，以上所述，僅為本發明的較佳具體實施例，惟本發明的特徵並不侷限於此，任何熟悉該項技藝者在本發明領域內，可輕易思及的變化或修飾，皆應涵蓋在以下本發明的申請專利範圍中。
The above object of the present invention, as well as its structural and functional features, will be described in accordance with the preferred embodiments of the drawings.
Please refer to FIG. 1 and FIG. 2 , which are block diagrams and steps of a preferred embodiment of the fan speed synchronization method of the present invention. As shown in the figure, a fan speed synchronization method is applied to the first docking. The fan 1 and the second fan 2 comprise the steps of:
Step S1, sensing a pulse wave period width generated by the first fan rotation speed through a first Hall sensor, and converting the pulse wave period width into the first pulse wave signal and transmitting the same to the microprocessor;
Wherein, when the first fan 1 is in operation, the stator group generates a pulse wave period, and the pulse wave period thereof also generates different pulse wave period widths according to the rotation speed condition of the first fan 1, and transmits through a first Huo The sensor 3 senses the pulse period width generated by the first fan speed, and the first Hall sensor 3 senses the pulse period width generated by the first fan speed and the pulse period width thereof Converting to the first pulse signal and transmitting the first pulse signal to a microprocessor 5.
Step S2, sensing a pulse wave period width generated by the second fan rotation speed through a second Hall sensor;
Wherein, when the second fan 2 is in operation, the stator group generates a pulse wave period, and the pulse wave period thereof also generates different pulse wave period widths according to the rotation speed condition of the second fan 2, and transmits through a second Huo The sensor 4 senses the pulse period width generated by the second fan rotation speed, and the second Hall sensor 4 senses the pulse wave period width generated by the second fan rotation speed and has a pulse wave period width thereof. Converted into a second pulse signal and transmitted its second pulse signal to the microprocessor 5.
Step S3, the microprocessor compares the first pulse wave signal corresponding to the pulse width of the second fan speed with the second pulse wave signal;
The microprocessor 5 receives the first pulse signal and the second pulse signal of the first Hall sensor 3 and the second Hall sensor 4, and for the first fan speed and the second fan speed The pulse signal width corresponding to the first pulse wave signal is compared with the second pulse wave signal.
Step S4, the microprocessor generates a pulse modulation signal to the second fan according to the difference between the first pulse signal and the second pulse signal;
The microprocessor 5 generates a pulse modulation signal when the first pulse signal and the second pulse signal are different, and sends the pulse modulation signal to the second fan 2.
When the first pulse wave signal is greater than the second pulse wave signal, step S5 is performed at this time, the microprocessor increases the pulse wave period width generated by the second fan rotation speed through the pulse wave modulation signal; when the first pulse wave When the signal is smaller than the second pulse signal, step S6 is performed at this time, and the microprocessor reduces the pulse wave period width generated by the second fan rotation speed through the pulse modulation signal; when the first pulse signal is equal to the second pulse wave At the time of the signal, at step S7, the microprocessor maintains the pulse period width generated by the second fan rotation speed via the pulse modulation signal.
The microprocessor 5 compares the first pulse signal and the second pulse signal, and if the pulse period width of the first pulse signal is greater than the pulse period width of the second pulse signal, the micro processing The device 5 increases the pulse period width generated by the second fan rotation speed through the pulse modulation signal, so that the pulse wave period width generated by the second fan rotation speed is equal to the pulse wave period width of the first pulse wave signal. And, in turn, control its second fan speed to be equal to the first fan speed.
If the pulse period width of the first pulse wave signal is smaller than the pulse wave period width of the second pulse wave signal, the microprocessor 5 reduces the pulse wave period generated by the second fan rotation speed via the pulse wave modulation signal. The width is such that the pulse period width generated by the second fan speed is equal to the pulse period width of the first pulse signal, and the second fan speed is controlled to be equal to the first fan speed.
If the pulse wave period width of the first pulse wave signal is equal to the pulse wave period width of the second pulse wave signal, the microprocessor 5 maintains the pulse wave generated by the rotation speed of the second fan 2 via the pulse wave modulation signal. The period width, the pulse period width generated by maintaining the second fan speed is equal to the pulse period width of the first pulse signal, and the second fan speed is equal to the first fan speed.
In step S8, the microprocessor controls the second fan speed to be equal to the first fan speed via the pulse modulation signal.
The microprocessor 5 controls the second fan speed by a pulse modulation signal generated by the difference after the comparison, so that the second fan speed is equal to the first fan speed.
Thereby, the first fan 1 and the second fan 2 that are butted together can be controlled by the first Hall sensor 3 and the second Hall sensor 4 and the microprocessor 5 when they are mutually operated. The first fan 1 and the second fan 2 operate synchronously at the same rotational speed, and effectively reduce the problem of noise generated between the fans due to different rotational speeds.
As described above, the present invention has the following advantages over the prior art:
1. The fans run synchronously at the same speed;
2. Effectively reduce the noise generated by the fan due to different speeds;
3. Improve fan operating efficiency.
The above description is only a preferred embodiment of the present invention, but the features of the present invention are not limited thereto, and any changes or modifications that can be easily conceived in the field of the present invention are known to those skilled in the art. It is intended to be included in the scope of the claims of the present invention below.
Claims (4)
透過一第一霍爾感測器感測由第一風扇轉速產生之脈波週期寬度，且將其脈波週期寬度轉換成第一脈波訊號並傳送至一微處理器；
另透過一第二霍爾感測器感測由第二風扇轉速產生之脈波週期寬度，且將其脈波週期寬度轉換成第二脈波訊號並傳送至所述微處理器；
該微處理器對第一風扇轉速與第二風扇轉速之脈波週期寬度對應之第一脈波訊號與第二脈波訊號進行比較；
該微處理器根據第一脈波訊號與第二脈波訊號之大小差異產生一脈波調變訊號至所述第二風扇；
所述微處理器經由所述脈波調變訊號控制第二風扇轉速與第一風扇轉速相等。A method for synchronizing a fan speed is applied to a first fan and a second fan that are butted to each other, and includes the steps of:
Sensing a pulse period width generated by the first fan speed through a first Hall sensor, and converting the pulse period width thereof into a first pulse signal and transmitting the signal to a microprocessor;
Transducing a pulse period width generated by the second fan rotation speed through a second Hall sensor, and converting the pulse wave period width into a second pulse wave signal and transmitting the pulse signal to the microprocessor;
The microprocessor compares the first pulse wave signal corresponding to the pulse width of the second fan speed with the second pulse wave signal;
The microprocessor generates a pulse modulation signal to the second fan according to the difference between the first pulse signal and the second pulse signal;
The microprocessor controls the second fan speed to be equal to the first fan speed via the pulse modulation signal.
The fan speed synchronization method of claim 1, wherein the first pulse signal is equal to the second pulse signal, and the microprocessor maintains the pulse generated by the second fan speed via the pulse modulation signal. Cycle width.
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| CN101408186B (en) * | 2008-11-21 | 2011-08-10 | 中兴通讯股份有限公司 | Fan control device and method as well as multiple-fan control device and method |
| TW201317466A (en) * | 2011-10-21 | 2013-05-01 | Hon Hai Prec Ind Co Ltd | System for controlling speed of power fan |
| TWI462466B (en) * | 2012-07-24 | 2014-11-21 | Delta Electronics Inc | Control method and control system of fan |
-
2014
- 2014-02-21 TW TW103105767A patent/TW201533326A/en not_active IP Right Cessation
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| TWI563178B (en) | 2016-12-21 |
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