CN2748675Y - Fan rotary speed control system - Google Patents
Fan rotary speed control system Download PDFInfo
- Publication number
- CN2748675Y CN2748675Y CN 200420118264 CN200420118264U CN2748675Y CN 2748675 Y CN2748675 Y CN 2748675Y CN 200420118264 CN200420118264 CN 200420118264 CN 200420118264 U CN200420118264 U CN 200420118264U CN 2748675 Y CN2748675 Y CN 2748675Y
- Authority
- CN
- China
- Prior art keywords
- fan
- inductor
- control system
- speed control
- rotary speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a fan rotary speed control system. The output voltage is converted into digit signal via a digit analogy converter. The digit signal from an inductor and the built-in parameter are compared and an output power is calculated by a microcrystal controller (MCU). The operation voltage of a driving fan motor is synchronically adjusted by a linear voltage stabilizer according to the output power of the microcrystal controller. Thus the goal of controlling the rotating speed of the fan is achieved and the service life of the fan motor is maintained.
Description
Technical field
The utility model relates to the radiating fan rotation speed control technique of devices such as notebook computer, personal host computer, server UPS, aim to provide one and can accurately cooperate heat source temperature just to adjust the rotating speed of fan, and keep the fan motor fan rotary speed control system in working life.
Background technique
Press, install when operating as notebook computer, personal host computer, server, UPS etc., can produce high temperature because of the builtin voltage conversion or the relation of microprocessor working at high speed, therefore similarly device needs to set up suitable heat-dissipating structure more, works as machine to avoid causing because of high temperature action; Again, the most general heat-dissipating structure promptly is that the cross-ventilation that utilizes fan running to produce is carried the thermal source that heater produced outside, to reach the thermolysis that reduces the heater temperature, so the speed of fan running will directly have influence on the radiating efficiency of heater.
Moreover, aforementioned means is when actual operation, be can be along with performed software difference with different speed runnings, that is the corresponding temperature that produces not is to be definite value, therefore promptly there is partial devices to utilize hardware such as temperature detector to detect the temperature of relevant heater, and directly by the rotating speed of parameter (voltage) the control fan that temperature detector reacted, reach and can rise along with the temperature of heater, cooperate the radiating mode that quickens rotation speed of the fan; And, utilize as TaiWan, China and announce the disclosed radiating mode of the novel patent of circuit for controlling speed of fan No. 420326 by central microprocessor control control rotation speed of the fan.
Aforementioned, it is to be used to have temperature detector to use the rotation speed of the fan control technique of disappearance for so-called an improvement that TaiWan, China is announced No. 420326 disclosed technology of circuit for controlling speed of fan, it mainly utilizes the corresponding heat source temperature parameter value when having different output level in, the central arithmetic processor of corresponding output power parameter value and corresponding pilot signal, recruit the output voltage values and the output current value of the numerical digit form of Analogue-to-digital Converter (ADC) input, and in addition after the calculation process power parameter, this central arithmetic processor is the heat source temperature parameter that receives the Analogue-to-digital Converter (ADC) input, and relatively determine output level A with correspondence table, central arithmetic processor relatively determines output level B with aforesaid output power parameter and correspondence table simultaneously, then central arithmetic processor compares output level A and B again, and then export the pairing pilot signal of grade the higher person to this rotation speed of the fan control unit, when output level is healed when high, it is higher that rotation speed of the fan control unit output is used for the VDC of drive fan, make rotation speed of the fan faster, so as to reaching the purpose of just adjusting rotation speed of the fan along with the heater temperature.
Yet its central processing unit (CPU) is to change with the ON/OFF pulse signal of pulse width tune changer (PWM) to make the VDC of rotation speed of the fan control unit output in order to the fan motor running; So that, in the ON/OFF signal process of central processing unit (CPU) output pulse width tune changer, the phenomenon that also can cause the rotation speed of the fan control unit that fan is rotated, fan will be in repeatedly open/close state this moment, and cause the damage of fan motor easily.
The model utility content
The utility model fan rotary speed control system, promptly the voltage transitions of the thermistor of inductor being exported through the numerical digit analogy converter becomes digital signals, by crystallite controller (MicroControl Unit, abbreviation MCU) digital signals of self-inductor and built-in parameter are compared in the future, and through calculating an output power, the power parameter of being exported according to the crystallite controller by linear voltage regulator is adjusted the voltage of fan motor running synchronously again, stablize the purpose of controlling rotation speed of the fan so as to reaching, and be maintained the working life of fan motor.
Description of drawings
Fig. 1 is the overall schematic of fan rotary speed control system in the utility model;
Fig. 2 is the built-in relevant parameter contrast figure of crystallite controller in the utility model;
Fig. 3 is the correlation behavior operation workflow figure of fan rotary speed control system in the utility model.
[figure number explanation]
10 power supply units
20 inductors
30 numerical digit analogy converters
40 crystallite controllers
50 linear voltage regulators
Embodiment
For the clear structure of the present utility model of your auditor is formed, and the overall operation mode, cooperate graphic being described as follows now:
The utility model fan rotary speed control system as shown in Figure 1, is to include at least one inductor 20, numerical digit analogy converter 30, a crystallite controller 40, and a linear voltage regulator 50; Wherein:
Inductor 20 has thermistor (NTC negative tempperature coefficient thermistor) in being; Can export different voltage (the higher voltage of being exported of temperature is lower) along with sensing temperature; Numerical digit analogy converter 30 then is to connect with inductor, converts digital signals in order to the magnitude of voltage with inductor 20 outputs; Crystallite controller 40 has corresponding temperature, voltage and output power parameter in then being, in order to receiving the digital signals of self-inductor 20 in the future, and with built-in parameter comparison, to calculate an output power; As for, linear voltage regulator 50, with the circuit connection of fan motor, its power parameter that is the crystallite controller is exported is adjusted the voltage of fan motor running synchronously.
According to this, promptly the voltage transitions of the thermistor of inductor 20 being exported through numerical digit analogy converter 30 becomes digital signals, compare by the digital signals of crystallite controller (MCU) self-inductor 20 in 40 future and built-in parameter, and through calculating an output power, the power parameter of being exported according to crystallite controller 40 by linear voltage regulator 50 is adjusted the voltage of fan motor running synchronously again, stablize the purpose of controlling rotation speed of the fan so as to reaching, and be maintained the working life of fan motor.
When implementing, please be simultaneously with reference to Fig. 2 and shown in Figure 3, whole rotation speed of the fan system be can with notebook computer, personal host computer, the power supply unit 10 (Power Supply Unit) of device such as server UPS is integrated mutually, and be provided with the fan that detects the power supply unit temperature, and the inner relevant heater sense temperature device of detection single unit system, and be integrated with a buzzer (Buzzer) at least, when the temperature of detecting at inductor is too high, whole fan control system except allow fan quicken with higher rotation speed operation heater the thermal source discharging, also can send caution sound simultaneously, so that relevant user is produced the warning effect.
As mentioned above, the utility model provides a preferable feasible fan rotary speed control system, the rotating speed that not only can accurately cooperate the blue or green low-key rectification campaign of heat source temperature fan, to keep the stable running of application apparatus outside, more can effectively keep the working life of fan motor, so, offer the application of utility model patent in accordance with the law; Yet; above implementation and graphic shown in; it is one of the utility model preferred embodiment; be not to limit to the utility model with this; therefore; all all and the utility model structure, device, feature etc. are approximate, identical, all should belong to the protection domain of founding purpose and applying for a patent of the present utility model in.
Claims (3)
1, a kind of fan rotary speed control system is characterized in that, includes:
At least one inductor, in have thermistor, this inductor is for exporting the device of different voltages along with sensing temperature;
A numerical digit analogy converter connects with inductor, and this numerical digit analogy converter is for convert the device of digital signals in order to the magnitude of voltage with inductor output;
A crystallite controller, in have corresponding temperature, voltage and output power parameter, this crystallite controller is in order to receiving the digital signals of self-inductor in the future, and with built-in parameter comparison, to calculate the device of an output power;
A linear voltage regulator, with the circuit connection of fan motor, the power parameter that this linear voltage regulator is exported by the crystallite controller is adjusted the voltage of fan motor running synchronously.
2, fan rotary speed control system according to claim 1 is characterized in that the thermistor of this inductor is a negative tempperature coefficient thermistor.
3, fan rotary speed control system according to claim 1 is characterized in that this fan rotary speed control system is to integrate a buzzer at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420118264 CN2748675Y (en) | 2004-10-27 | 2004-10-27 | Fan rotary speed control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420118264 CN2748675Y (en) | 2004-10-27 | 2004-10-27 | Fan rotary speed control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2748675Y true CN2748675Y (en) | 2005-12-28 |
Family
ID=35720167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420118264 Expired - Fee Related CN2748675Y (en) | 2004-10-27 | 2004-10-27 | Fan rotary speed control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2748675Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101169665B (en) * | 2006-10-27 | 2011-04-06 | 台达电子工业股份有限公司 | Fan system and motor drive and control device |
| CN102724340A (en) * | 2012-06-19 | 2012-10-10 | 广东欧珀移动通信有限公司 | Method for adjusting vibration strength of mobile phone |
| CN102981447A (en) * | 2012-11-07 | 2013-03-20 | 杨峥雄 | Speed synchronization control method for feeding pump and coater |
| CN103225620A (en) * | 2012-01-30 | 2013-07-31 | 华硕电脑股份有限公司 | Fan controlling method and electronic device |
| CN105465027A (en) * | 2015-12-31 | 2016-04-06 | 苏州壹达生物科技有限公司 | Device for intelligently controlling linear rotating speed of heat radiating fan |
-
2004
- 2004-10-27 CN CN 200420118264 patent/CN2748675Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101169665B (en) * | 2006-10-27 | 2011-04-06 | 台达电子工业股份有限公司 | Fan system and motor drive and control device |
| CN103225620A (en) * | 2012-01-30 | 2013-07-31 | 华硕电脑股份有限公司 | Fan controlling method and electronic device |
| CN103225620B (en) * | 2012-01-30 | 2015-06-17 | 华硕电脑股份有限公司 | Fan controlling method and electronic device |
| CN102724340A (en) * | 2012-06-19 | 2012-10-10 | 广东欧珀移动通信有限公司 | Method for adjusting vibration strength of mobile phone |
| CN102981447A (en) * | 2012-11-07 | 2013-03-20 | 杨峥雄 | Speed synchronization control method for feeding pump and coater |
| CN105465027A (en) * | 2015-12-31 | 2016-04-06 | 苏州壹达生物科技有限公司 | Device for intelligently controlling linear rotating speed of heat radiating fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |