CN112253519B - Fan control circuit, method, controller and electric equipment - Google Patents
Fan control circuit, method, controller and electric equipment Download PDFInfo
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- CN112253519B CN112253519B CN202011109369.8A CN202011109369A CN112253519B CN 112253519 B CN112253519 B CN 112253519B CN 202011109369 A CN202011109369 A CN 202011109369A CN 112253519 B CN112253519 B CN 112253519B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
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Abstract
The application relates to a fan control circuit, a fan control method, a controller and electric equipment, wherein the fan control circuit comprises an output circuit and a control circuit, wherein the output circuit is used for outputting a control signal so as to control a fan by adopting the control signal, and the control signal comprises a first control signal and a second control signal; and the controller is used for controlling the output circuit to output the first control signal or the second control signal. The fan that uses different control signal of a control circuit matching can be realized to this application, improves the circuit commonality, reduces development cycle.
Description
Technical Field
The application belongs to the technical field of fan control, and particularly relates to a fan control circuit, a fan control method, a controller and electric equipment.
Background
The EC fan (permanent magnet brushless motor) has excellent speed regulation performance similar to that of a direct current motor, overcomes the defects of commutation spark, low reliability and the like caused by a mechanical commutation device adopted by the direct current motor, has high operation efficiency, small volume, light weight, low power consumption and stepless adjustable wind speed, and is more beneficial to matching the air volume of the whole air conditioner system and is more applied by electric appliances such as an air conditioner and the like. The control signals of the EC fan are generally divided into two types, namely a 0-10V voltage control signal and a PWM wave duty ratio control signal, the control circuits corresponding to different control signals are different, the hardware control circuits are matched according to the control signals, if the matching is successful, the EC fan can normally operate according to the target rotating speed, and otherwise, the control signals need to be switched. In the traditional EC fan control method, when the used EC fan is not matched with the existing hardware control circuit, the original hardware control circuit needs to be newly developed or modified for matching, so that the development period is prolonged, the automation degree is low, and the EC fan is inconvenient to use.
Disclosure of Invention
In order to overcome the problems that in a traditional EC fan control method, when the used EC fan is not matched with the existing hardware control circuit, the original hardware control circuit needs to be newly developed or modified for matching, so that the development period is prolonged, the automation degree is low, and the use is inconvenient, the fan control circuit, the method, the controller and the electric equipment are provided.
In a first aspect, the present application provides a fan control circuit, comprising:
the output circuit is used for outputting a control signal to control the fan by adopting the control signal, wherein the control signal comprises a first control signal and a second control signal;
and the controller is used for controlling the output circuit to output the first control signal or the second control signal.
Further, the first control signal is a PWM signal, and the second control signal is a rectified signal obtained by rectifying the PWM signal.
Further, the output circuit includes:
a PWM signal output circuit for outputting a PWM signal;
the rectification circuit is used for rectifying the PWM signal and outputting a rectification signal when the PWM signal is connected;
and the switch is used for controlling the connection or disconnection of the rectifying circuit under the control of the controller.
Furthermore, the rectification circuit comprises a capacitor, one end of the capacitor is connected with the output end of the PWM signal output circuit, and the other end of the capacitor is connected with a switch.
Further, the switch is a relay.
Further, the controller is an MCU.
Further, the fan is an EC fan.
Further, the PWM signal output circuit includes:
a triode and an optocoupler relay;
the input end of the triode is connected with the first output interface of the controller;
the first output end of the triode is connected with the input end of the optocoupler relay;
the second output end of the triode is grounded;
the optical coupling relay is used for outputting PWM signals.
Further, the relay is a passive relay.
In a second aspect, the present application provides a method for controlling a wind turbine, including:
the control output circuit outputs a first control signal so as to control the fan by adopting the first control signal;
acquiring an actual operation parameter value of the fan under the control of a first control signal;
and if the actual operation parameter value is not matched with the preset target value, controlling an output circuit to output a second control signal so as to control the fan by adopting the second control signal.
Further, the control output circuit outputs a first control signal to control the fan by using the first control signal, including:
the control output circuit outputs a first control signal with a first control parameter as a first initial value;
detecting actual operation parameters of the fan under the control of the first control signal;
if the actual operation parameter of the fan is matched with a preset target value, maintaining the first control parameter;
and if the actual operation parameter value of the fan is not matched with the preset target value, adjusting the first control parameter until all the first control parameters are traversed or the first preset times are reached.
Further, the first control signal is a PWM signal, and the first control parameter is a PWM duty ratio.
Further, the control output circuit outputs a second control signal to control the fan by using the second control signal, including:
the control output circuit outputs a second control signal with a second control parameter as a second initial value;
detecting actual operation parameters of the fan under the control of the second control signal;
if the actual operation parameter of the fan is matched with a preset target value, keeping the second control parameter;
and if the actual operation parameter value of the fan is not matched with the preset target value, adjusting the second control parameter until all the second control parameters are traversed or a second preset number of times is reached.
Further, the second control signal is a rectification signal, and the second control signal is a rectification value.
Further, the rectification signal is a direct current voltage signal, and the rectification value is a voltage value.
Further, the voltage value is a value between 0 and 10V.
Further, the actual operating parameter is wind speed.
Further, the method also comprises the following steps:
calculating the difference value between the actual operation parameter and the target value;
and if the difference value is within a preset interval, matching the actual operation parameter with the target value, otherwise, not matching.
Further, the fan is an EC fan.
In a third aspect, the present application provides a controller comprising:
the first control module is used for controlling the output circuit to output a first control signal so as to control the fan by adopting the first control signal;
the acquisition module is used for acquiring an actual operation parameter value of the fan under the control of the first control signal;
and the second control module is used for controlling the output circuit to output a second control signal if the actual operation parameter value is not matched with a preset target value so as to control the fan by adopting the second control signal.
In a fourth aspect, the present application provides a fan control circuit, comprising: such as the controller described above.
In a fifth aspect, the present application provides an electrical device, comprising the blower control circuit as described above; and a fan.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
the fan control circuit comprises an output circuit and a controller, wherein the output circuit is used for outputting a control signal so as to control the fan by adopting the control signal, the control signal comprises a first control signal and a second control signal, and the controller is used for controlling the output circuit to output the first control signal or the second control signal.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a functional structure diagram of a fan control circuit according to an embodiment of the present application.
Fig. 2 is a circuit diagram of a fan control circuit according to an embodiment of the present application.
FIG. 3 is a circuit diagram of another fan control circuit according to an embodiment of the present disclosure.
Fig. 4 is a flowchart of a fan control method according to an embodiment of the present application.
Fig. 5 is a flowchart of another fan control method according to an embodiment of the present disclosure.
Fig. 6 is a flowchart of another fan control method according to an embodiment of the present disclosure.
Fig. 7 is a flowchart of another fan control method according to an embodiment of the present disclosure.
Fig. 8 is a flowchart of another fan control method according to an embodiment of the present disclosure.
Fig. 9 is a functional block diagram of a controller according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a functional structure diagram of a fan control circuit according to an embodiment of the present application, and as shown in fig. 1, the fan control circuit includes:
the output circuit 1 is used for outputting a control signal to control the fan by adopting the control signal, wherein the control signal comprises a first control signal and a second control signal;
and the controller 2 is used for controlling the output circuit to output the first control signal or the second control signal.
In some embodiments, the first control signal is a PWM signal, the second control signal is a rectified signal obtained by rectifying the PWM signal, and the fan is an EC fan.
Traditional EC fan control circuit can only export first control signal or second control signal alone, and at fan operation in-process, if meet target rotational speed and actual rotational speed when not matching, need change fan control circuit, the change process is more complicated, and has prolonged development cycle, inconvenient use.
In this embodiment, the fan control circuit includes an output circuit for outputting a control signal to adopt the control signal to control the fan, wherein, the control signal includes first control signal and second control signal, and the controller for controlling output circuit to output first control signal or second control signal can realize using the fan of a control circuit matching different control signals, improves the circuit commonality, reduces the development cycle.
An embodiment of the present application provides a fan control circuit, circuit diagrams are shown in fig. 2 and fig. 3, and an output circuit includes:
a PWM signal output circuit for outputting a PWM signal;
the rectification circuit is used for rectifying the PWM signal and outputting a rectification signal when the PWM signal is connected;
and the switch is used for controlling the connection or disconnection of the rectifying circuit under the control of the controller.
The rectification circuit comprises a capacitor, one end of the capacitor is connected with the output end of the PWM signal output circuit, and the other end of the capacitor is connected with the switch.
In some embodiments, the switch is a relay, and the relay is a passive relay; the controller is an MCU chip.
In some embodiments, the PWM signal output circuit includes:
a triode and an optocoupler relay;
the input end of the triode is connected with the first output interface of the controller;
the first output end of the triode is connected with the input end of the optocoupler relay;
the second output end of the triode is grounded;
the optical coupling relay is used for outputting a PWM signal.
It should be noted that the VCC value and 12V in the circuit diagram can be adjusted according to actual needs, and the present application is not limited thereto.
In this embodiment, the output circuit includes a PWM signal output circuit for outputting a PWM signal, and the rectifier circuit is configured to rectify the PWM signal and output a rectified signal when the PWM signal is connected, so that a plurality of control signals are output through one output circuit, and fans of different control signals are matched, thereby improving circuit versatility and reducing development cycle.
Fig. 4 is a flowchart of a fan control method according to an embodiment of the present application, and as shown in fig. 4, the fan control method includes:
s41: the control output circuit outputs a first control signal to control the fan by adopting the first control signal;
the first control signal is, for example, a PWM signal, the first control parameter is a PWM duty ratio, and the fan is an EC fan.
In some embodiments, the controlling the output circuit to output the first control signal so as to control the fan with the first control signal, as shown in fig. 5, specifically includes:
s411: the control output circuit outputs a first control signal with a first control parameter as a first initial value;
s412: detecting actual operation parameters of the fan under the control of the first control signal;
s413: if the actual operation parameter of the fan is matched with the preset target value, keeping the first control parameter;
s414: and if the actual operation parameter value of the fan is not matched with the preset target value, adjusting the first control parameter until all the first control parameters are traversed or the first preset times are reached.
S42: acquiring an actual operation parameter value of the fan under the control of a first control signal;
s43: and if the actual operation parameter value is not matched with the preset target value, controlling the output circuit to output a second control signal so as to control the fan by adopting the second control signal.
In some embodiments, the controlling the output circuit outputs a second control signal to control the fan with the second control signal, as shown in fig. 6, including:
s431: the control output circuit outputs a second control signal with a second control parameter as a second initial value;
s432: detecting actual operation parameters of the fan under the control of a second control signal;
s433: if the actual operation parameter of the fan is matched with the preset target value, keeping the second control parameter;
s434: and if the actual operation parameter value of the fan is not matched with the preset target value, adjusting the second control parameter until all the second control parameters are traversed or the second preset times is reached.
The second control signal is, for example, a rectified signal, and the second control signal is a rectified value.
In some embodiments, the rectified signal is a dc voltage signal, and the rectified value is a voltage value, preferably a voltage value between 0 and 10V.
The actual operating parameter is, for example, wind speed, and in some embodiments, as shown in fig. 7, the actual operating parameter further includes:
s421: calculating the difference between the actual operation parameter and the target value;
s422: and if the difference value is within the preset interval, matching the actual operation parameter with the target value, otherwise, mismatching.
The EC fan control method is shown in FIG. 8, and comprises the following specific steps:
step 1: after the software initialization is finished, the MCU controls the passive relay K1 to be disconnected, the rectifying capacitor is not connected with the circuit, and the circuit is initially defaulted to be in a PWM output state.
Step 2: the MCU outputs high and low levels according to the set duty ratio, and the on-off of the optocoupler J1 is controlled through the triode to output a PWM signal.
And step 3: when the MCU controls the output signal to drive the fan, the pulse fed back by the EC fan is obtained, and the current rotating speed f is calculated.
And 4, step 4: and when the difference between the feedback rotating speed F and the target rotating speed F is detected to be larger than +/-alpha% continuously x s, starting to regulate the speed by regulating the duty ratio to enable the fan to reach the target rotating speed.
Generally, x can be set to be 3-5 s, the rotating speed of the fan is basically stable at the moment, and specific values of the rotating speed can be determined according to actual conditions of different fans.
The target rotation speed F may be determined according to a linear relationship between the duty ratio and the wind speed or a linear relationship between the voltage and the wind speed in the product specification, for example, the fan is PWM controlled, the current output duty ratio is 55%, and the target rotation speed F is obtained by looking up the linear relationship between the duty ratio and the wind speed.
Alpha is a deviation ratio, which means that the rotating speed fed back by the fan has a certain deviation from the target rotating speed claimed by a manufacturer in actual use, and alpha is less than or equal to 1% in general, and needs to be determined by an experiment in combination with the used fan.
And 5: after u times of speed regulation are continuously carried out, if the difference value between the feedback rotating speed F and the target rotating speed F is detected to be less than or equal to +/-alpha% continuously x s, the control signal is judged to be matched with the fan, and the current PWM signal output is maintained; and when the difference between the feedback rotating speed F and the target rotating speed F is larger than +/-alpha% continuously detected by x s, judging that the control signal is not matched with the fan, adjusting the state of the circuit, and switching to 0-10V voltage output.
U is the speed governing number of times, can adjust this control signal in through same control signal, realizes more accurate control rotational speed and switching control, sets up 2 ~3 times under the general condition.
Step 6: the MCU outputs signals to close the relay K1, the rectifier capacitor is connected into the circuit, and the PWM signals are rectified into 0-10V voltage to be output.
And 7: and when the difference between the feedback rotating speed F and the target rotating speed F is detected to be larger than +/-alpha% continuously x s, starting to regulate the speed by regulating the voltage, so that the fan reaches the target rotating speed.
And 8: after u times of speed regulation are continuously carried out, if the difference value between the feedback rotating speed F and the target rotating speed F is detected to be less than or equal to +/-alpha% continuously x s, the control signal is judged to be matched with the fan, and the current 0-10V voltage output is maintained; and when the difference value between the feedback rotating speed F and the target rotating speed F is larger than +/-alpha% continuously detected by x s, judging that the control signal is not matched with the fan, adjusting the state of the circuit, and switching to PWM signal output.
And step 9: and circulating the steps until the difference between the feedback rotating speed F of the fan and the target rotating speed F is less than or equal to +/-alpha%.
It should be noted that, the cycle detection may be added with a number limit, and when the number of detection times exceeds the set number, the detection output is stopped, the fan and the circuit are protected, and a warning is given.
In this embodiment, the control output circuit outputs the first control signal to adopt the first control signal to control the fan, acquire the actual operation parameter value of the fan under the control of the first control signal, if the actual operation parameter value is not matched with the preset target value, the control output circuit outputs the second control signal to adopt the second control signal to control the fan, thereby can automatically identify the control signal and control the fan according to the control signal so as to reach the target rotating speed, and automation and intellectualization are realized.
Fig. 9 is a functional block diagram of a controller according to an embodiment of the present application, and as shown in fig. 9, the controller includes:
the first control module 91 is used for controlling the output circuit to output a first control signal so as to control the fan by adopting the first control signal;
the obtaining module 92 is configured to obtain an actual operation parameter value of the fan under control of the first control signal;
and the second control module 93 is configured to control the output circuit to output a second control signal if the actual operation parameter value is not matched with the preset target value, so as to control the fan by using the second control signal.
In this embodiment, the first control module controls the output circuit to output the first control signal, so as to control the fan by using the first control signal, the obtaining module obtains an actual operation parameter value of the fan under the control of the first control signal, and the second control module controls the output circuit to output the second control signal when the actual operation parameter value is not matched with a preset target value, so as to control the fan by using the second control signal, which can realize that one control circuit is used to match fans with different control signals, thereby improving circuit universality and reducing development period.
This embodiment provides a fan control circuit, includes: such as the controller described above.
The embodiment provides an electrical apparatus, comprising the fan control circuit as described above; and a fan.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
It should be noted that the present invention is not limited to the above-mentioned preferred embodiments, and those skilled in the art can obtain other products in various forms without departing from the spirit of the present invention, but any changes in shape or structure can be made within the scope of the present invention with the same or similar technical solutions as those of the present invention.
Claims (17)
1. A fan control circuit, comprising:
the output circuit is used for outputting a control signal to control the fan by adopting the control signal, wherein the control signal comprises a first control signal and a second control signal;
a controller for controlling the output circuit to output the first control signal or the second control signal;
the first control signal is a PWM signal, and the second control signal is a rectification signal obtained by rectifying the PWM signal;
the output circuit includes:
a PWM signal output circuit for outputting a PWM signal;
the rectification circuit is used for rectifying the PWM signal and outputting a rectification signal when the PWM signal is connected;
the switch is used for controlling the connection or disconnection of the rectifying circuit under the control of the controller;
the rectification circuit comprises a capacitor, one end of the capacitor is connected with the output end of the PWM signal output circuit, and the other end of the capacitor is connected with a switch.
2. The fan control circuit of claim 1, wherein the switch is a relay.
3. The fan control circuit of claim 1, wherein the controller is an MCU.
4. The fan control circuit according to any one of claims 1 to 3, wherein the fan is an EC fan.
5. The fan control circuit of claim 1, wherein the PWM signal output circuit comprises:
a triode and an optocoupler relay;
the input end of the triode is connected with the first output interface of the controller;
the first output end of the triode is connected with the input end of the optocoupler relay;
the second output end of the triode is grounded;
the optical coupling relay is used for outputting PWM signals.
6. The fan control circuit of claim 2, wherein the relay is a passive relay.
7. A fan control method is suitable for the fan control circuit according to any one of claims 1 to 6, and is characterized by comprising the following steps:
the control output circuit outputs a first control signal so as to control the fan by adopting the first control signal;
acquiring an actual operation parameter value of the fan under the control of a first control signal;
if the actual operation parameter value is not matched with a preset target value, controlling an output circuit to output a second control signal so as to control the fan by adopting the second control signal;
the first control signal is a PWM signal, and the second control signal is a rectified signal obtained by rectifying the PWM signal.
8. The fan control method according to claim 7, wherein the control output circuit outputs a first control signal to control the fan using the first control signal, comprising:
the control output circuit outputs a first control signal with a first control parameter as a first initial value;
detecting actual operation parameters of the fan under the control of the first control signal;
if the actual operation parameter of the fan is matched with a preset target value, maintaining the first control parameter;
and if the actual operation parameter value of the fan is not matched with the preset target value, adjusting the first control parameter until all the first control parameters are traversed or the first preset times are reached.
9. The fan control method according to claim 8, wherein the first control signal is a PWM signal and the first control parameter is a PWM duty cycle.
10. The fan control method according to claim 7, wherein the control output circuit outputs a second control signal to control the fan using the second control signal, comprising:
the control output circuit outputs a second control signal with a second control parameter as a second initial value;
detecting actual operation parameters of the fan under the control of the second control signal;
if the actual operation parameter of the fan is matched with a preset target value, keeping the second control parameter;
and if the actual operation parameter value of the fan is not matched with the preset target value, adjusting the second control parameter until all the second control parameters are traversed or a second preset number of times is reached.
11. The fan control method of claim 10, wherein the second control signal is a rectified signal and the second control parameter is a rectified value.
12. The fan control method according to claim 11, wherein the rectified signal is a dc voltage signal and the rectified value is a voltage value.
13. The fan control method according to claim 12, wherein the voltage value is a value between 0 and 10V.
14. The fan control method according to any one of claims 7 to 13, wherein the actual operating parameter is wind speed.
15. The fan control method according to any one of claims 7 to 13, further comprising:
calculating the difference value between the actual operation parameter and the target value;
and if the difference value is within a preset interval, matching the actual operation parameter with the target value, otherwise, not matching.
16. The fan control method according to any one of claims 7 to 13, wherein the fan is an EC fan.
17. An electrical apparatus, comprising the fan control circuit according to any one of claims 1 to 6; and a fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011109369.8A CN112253519B (en) | 2020-10-16 | 2020-10-16 | Fan control circuit, method, controller and electric equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011109369.8A CN112253519B (en) | 2020-10-16 | 2020-10-16 | Fan control circuit, method, controller and electric equipment |
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| CN112253519B true CN112253519B (en) | 2021-09-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TW200720891A (en) * | 2005-11-16 | 2007-06-01 | Tyan Computer Corp | Universal apparatus and method for driving different fans |
| CN101514708B (en) * | 2008-02-18 | 2012-12-19 | 鸿富锦精密工业（深圳）有限公司 | Computer fan control device |
| CN101963150B (en) * | 2009-07-21 | 2014-08-13 | 鸿富锦精密工业（深圳）有限公司 | Fan type detection and speed regulation system |
| CN204283959U (en) * | 2014-11-26 | 2015-04-22 | 深圳市三巨电机有限公司 | A kind of intelligent temperature control fan controlling device |
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