CN203685643U - Fan rotation speed synchronizer - Google Patents
Fan rotation speed synchronizer Download PDFInfo
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- CN203685643U CN203685643U CN201420076211.9U CN201420076211U CN203685643U CN 203685643 U CN203685643 U CN 203685643U CN 201420076211 U CN201420076211 U CN 201420076211U CN 203685643 U CN203685643 U CN 203685643U
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- fan
- pulse wave
- rotation speed
- wave signal
- microprocessor
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Abstract
A fan rotation speed synchronizer is applied to a first fan and a second fan which are connected in a butt joint mode. A using method comprises the steps of sensing the pulse wave period width produced by the rotation speed of the first fan through a first Hall sensor, converting the pulse wave period width into a first pulse wave signal and transmitting the signal to a microprocessor; sensing the pulse wave period width produced by the rotation speed of the second fan through a second Hall sensor, converting the pulse wave period width into a second pulse wave signal and transmitting the signal to a microprocessor; comparing the first pulse wave signal with the second pulse wave signal corresponding to the pulse wave period widths produced by the rotation speeds of the first fan and the second fan through the microprocessor; producing and transmitting a pulse wave modulation signal to the second fan according to the difference of the first pulse wave signal and the second pulse wave signal through the microprocessor; enabling the rotation speeds of the second fan and the first fan to be identical according to the pulse wave modulation signal through the microprocessor, accordingly effectively controlling the fan rotation speed synchronization and reducing fan noise.
Description
Technical field
The present invention relates to a kind of rotation speed of the fan synchronizer, a kind of synchronization and rotation speed of the fan synchronizer that reduces fan running noise of providing is provided.
Background technique
Along with scientific and technological progress, people also increase for the dependence of various electronic equipments thereupon, but, again in order to meet considering of portability and practicability, current electronic product on the market in design, often all tend to compact, function is many, and processing rate is carried out the main shaft as design soon, so that the product of making can more meet the life requirement of modern society, again in order to meet considering of portability and practicability, current electronic product is on the market (as computer, mobile computer) in design, often all tend to compact, function is many, and carry out soon the main shaft as design with processing rate, just can more meet the life requirement of modern society with the product of making.
For the effect of heat radiation fan, in traditional fan control, system manufacturer tends to be designed to, in the time of electronic product temperature rise, just increase the rotating speed of fan, to accelerate the effect of heat radiation.Typical mode, by electronic product is carried out to temperature detecting, then along with detected temperature, via a fan governor, controls the rotating speed of fan.In general, by pulse wave width modulation (PWM) responsibility ratio or the output of voltage, the just rotating speed of controlling fan; Again or sometimes the wind-force that single fan can provide may be not enough, therefore usually more than two or two fans can be connected in series to assembling use, so that enough wind-force can be provided.
Again, though its combination of fans via serial connection assembling provides identical initial conditions in the running, but can produce phase mutual interference because of the not identical or difference of rotation speed of the fan, impact and around Flow Field Distribution and occur rotating speed deviation between two fans and asynchronous, and in the time that nonsynchronous situation produces, the noise spectrum of its phase mutual interference generation increases and cannot eliminate, more and asynchronous its fan running efficiency that also can affect of its fan running; Therefore prior art has following shortcoming:
1. rotating speed deviation is asynchronous;
2. cannot reduce noise.
Therefore, how to address the above problem and defect, the inventor who is this case to be engaged in the industry relevant manufacturer the anxious wish research direction place of improving.
Summary of the invention
Therefore,, for effectively addressing the above problem, main purpose of the present invention is to provide the synchronous rotation speed of the fan synchronizer of a kind of controlling fan.
Secondary objective of the present invention is that a kind of rotation speed of the fan synchronizer that reduces fan running noise is being provided.
Secondary objective of the present invention is that a kind of rotation speed of the fan synchronizer that promotes fan running efficiency is being provided.
For reaching above-mentioned purpose, the invention provides a kind of rotation speed of the fan synchronizer, be applied to the first fan and second fan of mutual docking, it comprises step:
The Pulse period width being produced by the first rotation speed of the fan by one first Hall transducer sensing, and its Pulse period width is converted to the first pulse wave signal and is sent to a microprocessor;
The another Pulse period width being produced by the second rotation speed of the fan by one second Hall transducer sensing, and its Pulse period width is converted to the second pulse wave signal and is sent to described microprocessor;
This microprocessor compares this first rotation speed of the fan first pulse wave signal corresponding with the Pulse period width of the second rotation speed of the fan and the second pulse wave signal;
This microprocessor produces pulse wave modulation signal to the second fan according to the difference in size of the first pulse wave signal and the second pulse wave signal;
Described microprocessor equates with the first rotation speed of the fan via described pulse wave modulation signal control the second rotation speed of the fan.
Preferably, when the first pulse wave signal is greater than the second pulse wave signal, this microprocessor increases via pulse wave modulation signal the Pulse period width that described the second rotation speed of the fan produces.
Preferably, when the first pulse wave signal is less than the second pulse wave signal, this microprocessor reduces via pulse wave modulation signal the Pulse period width that described the second rotation speed of the fan produces.
Preferably, when the first pulse wave signal equals the second pulse wave signal, the Pulse period width that this microprocessor keeps described the second rotation speed of the fan to produce via pulse wave modulation signal.
By the design of the method for the present invention, can effectively control rotation speed of the fan synchronous, and can reduce the effect of fan running noise simultaneously.
Accompanying drawing explanation
Fig. 1 is the block schematic diagram of preferred embodiment of the present invention;
Fig. 2 is the flow chart of steps of preferred embodiment of the present invention.
Symbol description
The first fan 1
The second fan 2
The first Hall transducer 3
The second Hall transducer 4
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Characteristic in above-mentioned purpose of the present invention and structure thereof and function, will be explained according to appended graphic preferred embodiment.
Refer to shown in the 1st figure and the 2nd figure, for block schematic diagram and the flow chart of steps of rotation speed of the fan synchronizer of the present invention preferred embodiment, as shown in the figure, a kind of rotation speed of the fan synchronizer is applied to the first fan 1 and second fan 2 of mutual docking, and it comprises step:
Step S1, the Pulse period width being produced by the first rotation speed of the fan by one first Hall transducer sensing, and its Pulse period width is converted to the first pulse wave signal and is sent to a microprocessor;
When wherein said the first fan 1 turns round, its stator pack can produce Pulse period, its Pulse period also produces different Pulse period width according to the rotating speed situation of described the first fan 1, and the Pulse period width being produced by the first fan 1 rotating speed by one first Hall transducer 3 sensings, the Pulse period width that described in described the first Hall transducer 3 sensings, the first fan 1 rotating speed produces also converts its Pulse period width to first pulse wave signal, and its first pulse wave signal is sent to a microprocessor 5.
Step S2, the Pulse period width separately being produced by the second rotation speed of the fan by one second Hall transducer sensing;
When wherein said the second fan 2 turns round, its stator pack can produce Pulse period, its Pulse period also produces different Pulse period width according to the rotating speed situation of described the second fan 2, and the Pulse period width being produced by the second fan 2 rotating speeds by one second Hall transducer 4 sensings, the Pulse period width that described in described the second Hall transducer 4 sensings, the second fan 2 rotating speeds produce also converts its Pulse period width to second pulse wave signal, and its second pulse wave signal is sent to described microprocessor 5.
Step S3, this microprocessor compares this first rotation speed of the fan first pulse wave signal corresponding with the Pulse period width of the second rotation speed of the fan and the second pulse wave signal;
Described microprocessor 5 receives the first pulse wave signal and the second pulse wave signal of described the first Hall transducer 3 and the second hall sensor 4, and compares for its first fan 1 rotating speed first pulse wave signal corresponding with the Pulse period width of the second fan 2 rotating speeds and the second pulse wave signal.
Step S4, this microprocessor produces pulse wave modulation signal to the second fan according to the difference in size of the first pulse wave signal and the second pulse wave signal;
Described microprocessor 5 can produce a pulse wave modulation signal for described the first pulse wave signal and the second pulse wave signal when variant, and described pulse wave modulation signal is delivered to the second fan 2.
In the time that the first pulse wave signal is greater than the second pulse wave signal, now perform step S5, this microprocessor increases via pulse wave modulation signal the Pulse period width that described the second rotation speed of the fan produces; In the time that the first pulse wave signal is less than the second pulse wave signal, now perform step S6, this microprocessor reduces via pulse wave modulation signal the Pulse period width that described the second rotation speed of the fan produces; In the time that the first pulse wave signal equals the second pulse wave signal, now perform step S7, this microprocessor keeps the Pulse period width of described the second rotation speed of the fan generation via pulse wave modulation signal.
More described the first pulse wave signal of wherein said microprocessor 5 and the second pulse wave signal, if when the Pulse period width of its first pulse wave signal is greater than the Pulse period width of the second pulse wave signal, 5 of its microprocessors increase via pulse wave modulation signal the Pulse period width that described the second fan 2 rotating speeds produce, the Pulse period width that its second fan 2 rotating speeds produce is equated with the Pulse period width of the first pulse wave signal, and and then control its second fan 2 rotating speeds and equate with the first fan 1 rotating speed.
If when the Pulse period width of its first pulse wave signal is less than the Pulse period width of the second pulse wave signal, 5 of its microprocessors reduce via pulse wave modulation signal the Pulse period width that described the second fan 2 rotating speeds produce, the Pulse period width that its second fan 2 rotating speeds produce is equated with the Pulse period width of the first pulse wave signal, and and then control its second fan 2 rotating speeds and equate with the first fan 1 rotating speed.
If when the Pulse period width of its first pulse wave signal equals the Pulse period width of the second pulse wave signal, 5 Pulse period width that keep described the second fan 2 rotating speeds to produce via pulse wave modulation signal of its microprocessor, maintain the Pulse period width that its second fan 2 rotating speeds produce and equate with the Pulse period width of the first pulse wave signal, and make its second fan 2 rotating speeds equate with the first fan 1 rotating speed.
Step S8, described microprocessor equates with the first rotation speed of the fan via described pulse wave modulation signal control the second rotation speed of the fan.
The pulse wave modulation signal that described microprocessor 5 produces via the difference after comparing removes to control the second fan 2 rotating speeds, and its second rotation speed of the fan is equated with the first rotation speed of the fan.
Whereby, the first fan 1 of described mutual docking and the second fan 2 are in the time of mutual running, can turn round with identical synchronization with microprocessor 5 its first fans 1 of control and the second fan 2 by described the first Hall transducer 3 and the second Hall transducer 4, and effectively reduce between fan because of the different problems that produce noise of rotating speed.
The above, the present invention has following advantages compared to prior art:
1. between fan, turn round with identical synchronization;
2. effectively reduce between fan because of the different problems that produce noise of rotating speed;
3. promote fan running efficiency.
Although the present invention discloses as above with mode of execution; so it is not in order to limit the present invention, any person skilled in the art person, without departing from the spirit and scope of the present invention; when being used for a variety of modifications and variations, therefore protection scope of the present invention is worked as with standard that claims are decided to be.
Claims (4)
1. a rotation speed of the fan synchronizer, is applied to the first fan and second fan of mutual docking, it is characterized in that, comprises step:
The Pulse period width being produced by the first rotation speed of the fan by one first Hall transducer sensing, and its Pulse period width is converted to the first pulse wave signal and is sent to a microprocessor;
The another Pulse period width being produced by the second rotation speed of the fan by one second Hall transducer sensing, and its Pulse period width is converted to the second pulse wave signal and is sent to described microprocessor;
This microprocessor compares this first rotation speed of the fan first pulse wave signal corresponding with the Pulse period width of the second rotation speed of the fan and the second pulse wave signal;
This microprocessor produces pulse wave modulation signal to the second fan according to the difference in size of the first pulse wave signal and the second pulse wave signal;
Described microprocessor equates with the first rotation speed of the fan via described pulse wave modulation signal control the second rotation speed of the fan.
2. rotation speed of the fan synchronizer as claimed in claim 1, is characterized in that, in be greater than the second pulse wave signal when the first pulse wave signal, this microprocessor increases via pulse wave modulation signal the Pulse period width that described the second rotation speed of the fan produces.
3. rotation speed of the fan synchronizer as claimed in claim 1, is characterized in that, in be less than the second pulse wave signal when the first pulse wave signal, this microprocessor reduces via pulse wave modulation signal the Pulse period width that described the second rotation speed of the fan produces.
4. rotation speed of the fan synchronizer as claimed in claim 1, is characterized in that, in equal the second pulse wave signal when the first pulse wave signal, the Pulse period width that this microprocessor keeps described the second rotation speed of the fan to produce via pulse wave modulation signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420076211.9U CN203685643U (en) | 2014-02-21 | 2014-02-21 | Fan rotation speed synchronizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420076211.9U CN203685643U (en) | 2014-02-21 | 2014-02-21 | Fan rotation speed synchronizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203685643U true CN203685643U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420076211.9U Expired - Fee Related CN203685643U (en) | 2014-02-21 | 2014-02-21 | Fan rotation speed synchronizer |
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| CN (1) | CN203685643U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863880A (en) * | 2014-02-21 | 2015-08-26 | 奇鋐科技股份有限公司 | Fan rotating speed synchronization method and device |
| CN108811431A (en) * | 2017-04-28 | 2018-11-13 | 茂达电子股份有限公司 | Heat dissipation system and heat dissipation system stabilizing method |
-
2014
- 2014-02-21 CN CN201420076211.9U patent/CN203685643U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863880A (en) * | 2014-02-21 | 2015-08-26 | 奇鋐科技股份有限公司 | Fan rotating speed synchronization method and device |
| CN108811431A (en) * | 2017-04-28 | 2018-11-13 | 茂达电子股份有限公司 | Heat dissipation system and heat dissipation system stabilizing method |
| CN108811431B (en) * | 2017-04-28 | 2020-04-14 | 茂达电子股份有限公司 | Heat dissipation system and heat dissipation system stabilizing method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20200221 |
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| CF01 | Termination of patent right due to non-payment of annual fee |