CN101030162A - CPU fan stalling alarming circuit - Google Patents

CPU fan stalling alarming circuit Download PDF

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Publication number
CN101030162A
CN101030162A CN 200610034118 CN200610034118A CN101030162A CN 101030162 A CN101030162 A CN 101030162A CN 200610034118 CN200610034118 CN 200610034118 CN 200610034118 A CN200610034118 A CN 200610034118A CN 101030162 A CN101030162 A CN 101030162A
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China
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cpu
fan
transistor
connected
alarm
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CN 200610034118
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Chinese (zh)
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CN100530132C (en
Inventor
何凤龙
游永兴
胡可友
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鸿富锦精密工业(深圳)有限公司
鸿海精密工业股份有限公司
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Priority to CN 200610034118 priority Critical patent/CN100530132C/en
Publication of CN101030162A publication Critical patent/CN101030162A/en
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Abstract

A stop-alarming circuit of CPU fan is prepared as connecting CPU fan to monitor circuit being connected with alarming unit, utilizing said monitor circuit to monitor operation state of CPU fan and starting up alarming unit when operation of CPU fan is stopped.

Description

CPU风扇停转报警电路 CPU fan stops the alarm circuit

【技术领域】本发明涉及一种报警电路,尤其涉及一种CPU风扇停转报警电路。 TECHNICAL FIELD The present invention relates to an alarm circuit, in particular to a CPU fan stops the alarm circuit.

【背景技术】中央处理器(CPU)是计算机系统最为重要的一个组成部分,随着CPU工作主频的提升,其功耗及发热量也在不断提升,而CPU的温度直接影响到计算机工作的稳定,这就需要CPU风扇在CPU工作时将其产生的热量及时扩散。 BACKGROUND central processing unit (CPU) is the most important part of a computer system, with the upgrading of the CPU operating frequency, power consumption and heat generation is also rising, while the CPU temperature directly affects the computer work stable, which requires the CPU fan will promptly diffuse heat generated in the CPU work. 在计算机工作时如果CPU风扇停止转动,例如被异物卡住、电源接触不良及风扇损坏等原因引起的CPU风扇无法转动,就会使CPU产生的热量不能及时散发,造成CPU温度过高,使计算机频繁死机,甚至造成CPU烧毁。 If the CPU fan stops working at a computer, for example, foreign matter is stuck, and the fan power bad damage and other causes CPU fan can not rotate, so that the heat generated by the CPU will not be distributed, causing the CPU temperature is too high, causing a computer to frequent crashes, and even cause damage to the CPU.

为了使计算机稳定工作,保证CPU的散热正常,就需要对风扇的工作状态进行有效监测,以便及时发现问题并及时处理。 In order to stabilize the working computer, to ensure proper cooling of the CPU, it is necessary to work the effective monitoring of the state of the fan, in order to detect problems and timely manner.

【发明内容】鉴于以上内容,有必要提供一种CPU风扇停转报警电路,以监测CPU风扇是否正常工作。 SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a CPU fan stops the alarm circuit to monitor whether the CPU fan is working properly.

一种CPU风扇停转报警电路,其包括CPU风扇、监视电路及报警装置,所述CPU风扇与所述监视电路连接,所述监视电路与所述报警装置连接,所述监视电路监视所述CPU风扇的工作状态,在CPU风扇停止工作时启动报警装置。 A CPU-fan stops the alarm circuit, which includes a CPU fan, and alarm monitoring circuit means, said CPU fan and the monitoring circuit, the monitoring circuit is connected to said alarm means, said monitoring circuit monitoring said CPU the operating state of the fan, activate an alarm means when the CPU fan stops.

计算机开始工作后,所述CPU风扇停转报警电路的监视电路即开始监视CPU风扇的工作状态,在CPU风扇停止工作时启动报警装置报警。 After the computer to work, the CPU fan stops the alarm circuit monitoring circuit, i.e., CPU starts monitoring the operating state of the fan, the activation of the alarm when the alarm CPU fan stops.

【附图说明】下面结合附图及较佳实施方式对本发明作进一步详细描述:图1是本发明CPU风扇停转报警电路较佳实施方式的电路图。 BRIEF DESCRIPTION The present invention will be further detailed description of preferred embodiment in conjunction with the following: CPU 1 is a circuit diagram of a fan stall alarm circuit according to the preferred embodiment.

【具体实施方式】请参阅图1,一种CPU风扇停转报警电路10,其包括CPU风扇12、监视电路14及报警装置16,所述CPU风扇12包括电源引脚VCC、转子信号引脚Tacho及接地引脚GND,所述报警装置16为一蜂鸣器,其包括电源正极V+及电源负极V-,所述监视电路14包括若干三极管Q1~Q3、若干电阻R1~R5、两电容C1和C2、两二极管D1和D2及12V电源。 DETAILED DESCRIPTION Referring to FIG 1] A CPU fan stall alarm circuit 10, which includes a CPU fan 12, the monitoring circuit 14 and the warning device 16, the fan 12 comprises a CPU power the VCC pin, a signal pin rotor Tacho and grounding the GND pin, said alarm means is a buzzer 16, which comprises a positive power supply V + and the negative power supply V-, the monitoring circuit 14 includes a plurality of transistors Q1 ~ Q3, a plurality of resistors R1 ~ R5, capacitor C1 and two C2, two diodes D1 and D2 and 12V power.

所述CPU风扇12的电源引脚VCC与所述监视电路14的12V电源连接,所述CPU风扇12的接地引脚GND接地,所述CPU风扇12的转子信号引脚Tacho通过所述监视电路14中电阻R1与所述三极管Q1的基极连接,所述三极管Q1的集电极与所述12V电源连接,所述三极管Q1的发射极通过所述电阻R2接地,所述三极管Q1的发射极还通过所述电容C1与所述二极管D1的正极连接,所述二极管D2的负极分别与所述电容C1及所述二极管D1的正极连接,所述二极管D2的正极接地,所述二极管D1的负极通过所述电阻R3与所述三极管Q2的基极连接,所述电容C2一端分别与所述二极管D1的负极及所述电阻R3连接,另一端接地,所述三极管Q2的发射极接地,所述三极管Q2的集电极通过所述电阻R5与所述12V电源连接,所述三极管Q2的集电极还与所述三极管Q3的基极连接,所述三极管Q3的发射极接地,所述三极管Q3的集电 The 12V power supply pins the VCC CPU fan 12 and the monitoring circuit 14 is connected to the ground pin GND of the CPU 12 of the fan, the fan rotor CPU Tacho signal pins 12 by the monitoring circuit 14 the resistor R1 is connected to the base of transistor Q1, the collector of the transistor Q1 is connected to the 12V power supply, the emitter of the transistor Q1 is grounded through the resistor R2, the emitter of the transistor Q1 through connecting the positive electrode of the capacitor C1 and the diode D1, the cathode of diode D2 are connected to the positive electrode of the capacitor C1 and the diode D1, the anode of the diode D2 is grounded, the anode of the diode D1 through the said resistor R3 and the base of transistor Q2 is connected to one end of the capacitor C2 are connected to the negative electrode of the resistor R3 and the diode D1, the other end is grounded, the emitter of the transistor Q2 is grounded, the transistor Q2 the collector of the resistor R5 is connected to the 12V power supply, the collector of the transistor Q2 is further connected to the base of transistor Q3, the transistor Q3 is an emitter grounded, the collector of the transistor Q3 与所述报警装置16的电源负极V-连接,所述报警装置16的电源正极V+通过所述电阻R4与所述12V电源连接。 Connected to the negative power supply V- 16 with the alarm device, the alarm device 16 positive power supply V + is connected to the 12V power supply through the resistor R4.

所述三极管Q1~Q3均为NPN型三极管,所述电阻R2的电阻值为1KOhm,所述电容C1的容值为1uF。 Of the transistor Q1 ~ Q3 are NPN transistor, the resistor R2 is 1kohm resistance value, capacitance value of the capacitor C1 1uF.

计算机启动后所述CPU风扇12开始工作,其转子信号引脚Tacho输出一交替变化的TTL电平信号,通过所述监视电路14的三极管Q1后产生一脉冲型偏置电流,从而在所述电阻R2两端产生脉冲电压,所述脉冲电压依次经过所述电容C1耦合、二极管D1检波及电容C2滤波后,转变为平滑的直流电压,所述直流电压使所述三极管Q2导通,三极管Q3截止,所述报警装置16关闭;当CPU风扇12停止转动时,所述转子信号引脚Tacho输出一恒定电压信号,使所述监视电路14的三极管Q1产生一恒定的偏置电流,从而在所述电阻R2两端产生一恒定电压,此时通过所述电容C1及二极管D1后无电压输出,因此所述三极管Q2截止,所述三极管Q3导通,所述报警装置16启动,发出警报。 After the computer starts the CPU fan 12 starts working, the rotor of a signal pin Tacho output TTL level signals are alternately changed, generating a pulse-type bias current through the transistor Q1 of the monitor circuit 14 so that the resistor R2 pulse voltage is generated at both ends, the pulse voltage is sequentially coupled through the capacitor C1, the diode D1 and a capacitor C2 detection filter, converted into a smooth DC voltage, the DC voltage causes the transistor Q2 is turned on, the transistor Q3 is turned off the warning device 16 is closed; when the CPU fan 12 stops rotating, the rotor Tacho signal pin outputs a constant voltage signal to the monitoring circuit transistor Q1 14 generates a constant bias current to the across the resistor R2 generates a constant voltage, when no voltage output by the capacitor C1 and the diode D1, and therefore the transistor Q2 is turned off, the transistor Q3 is turned on, the alarm 16 activated alarm.

Claims (6)

1.一种CPU风扇停转报警电路,其包括CPU风扇、监视电路及报警装置,所述CPU风扇与所述监视电路连接,所述监视电路与所述报警装置连接,所述监视电路监视所述CPU风扇的工作状态,在CPU风扇停止工作时启动报警装置。 A CPU fan stops the alarm circuit, which includes a CPU fan, and alarm monitoring circuit means, said CPU fan and the monitoring circuit, the monitoring circuit is connected to said alarm means, said monitoring circuit monitors the said CPU operating state of the fan, activate an alarm means when the CPU fan stops.
2.如权利要求1所述的CPU风扇停转报警电路,其特征在于:所述报警装置为一蜂鸣器。 2. CPU fan according to claim 1 stall alarm circuit, characterized in that: said alarm means is a buzzer.
3.如权利要求2所述的CPU风扇停转报警电路,其特征在于:所述CPU风扇包括电源引脚,所述监视电路包括一电源,所述蜂鸣器包括电源正极,所述CPU风扇的电源引脚与所述电源连接,所述蜂鸣器的电源正极与所述电源连接。 3. The CPU fan according to claim 2 stops the alarm circuit, characterized in that: the fan includes a CPU power pin, said monitoring circuit comprises a power source, the buzzer comprises a positive power, the CPU fan the power supply pin is connected to the power source, the positive power supply and the power connection buzzer.
4.如权利要求3所述的CPU风扇停转报警电路,其特征在于:所述CPU风扇还包括转子信号引脚,所述蜂鸣器还包括电源负极,所述监视电路还包括第一三极管、第二三极管、第三三极管、电阻、电容及二极管,所述CPU风扇的转子信号引脚与所述第一三极管的基极连接,所述第一三极管的集电极与所述电源连接,所述第一三极管的发射极通过所述电阻接地,所述第一三极管的发射极还通过所述电容与所述二极管的正极连接,所述二极管的负极与所述第二三极管的基极连接,所述第二三极管的集电极与所述电源连接,所述第二三极管的集电极还与所述第三三极管的基极连接,所述第二三极管的发射极接地,所述第三三极管的集电极与所述蜂鸣器的电源负极连接,所述第三三极管的发射极接地。 4. CPU fan stops the alarm circuit as claimed in claim 3, wherein: said fan further includes a rotor CPU signal pin, further comprises a buzzer negative power, the monitoring circuit further includes a first three diode, the second transistor, a third transistor, resistor, capacitor and a diode, the signal pin CPU fan rotor of the first transistor and a base connected to said first transistor the power supply is connected to the collector of said first transistor emitter is grounded through the resistor, the emitter of the first transistor is further connected to the positive electrode of the capacitor through the diode, the the cathode of the diode is connected to the base of the second transistor, the collector of the second transistor is connected to the power supply, the collector of the second transistor and the third electrode further three substrate tube is connected, an emitter of the second transistor is grounded, the negative power supply connected to the collector of said third transistor and said buzzer, said third transistor emitter is grounded .
5.如权利要求4所述的CPU风扇停转报警电路,其特征在于:所述CPU风扇还包括接地引脚,所述接地引脚接地。 5. The CPU of claim 4 fan stall alarm circuit, characterized in that: said fan further comprises a CPU ground pin, the ground pin is grounded.
6.如权利要求4所述的CPU风扇停转报警电路,其特征在于:所述第一、第二和第三三极管均为NPN型三极管。 6. The CPU of claim 4, wherein a fan stall alarm circuit, characterized in that: said first, second, and third transistors are NPN transistor.
CN 200610034118 2006-03-02 2006-03-02 CPU fan stalling alarming circuit CN100530132C (en)

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Cited By (12)

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CN102749974A (en) * 2011-04-22 2012-10-24 鸿富锦精密工业(深圳)有限公司 Fan failure alarm circuit
CN103218282A (en) * 2012-01-18 2013-07-24 精英电脑股份有限公司 Power supply indicating device with fan monitoring function and control method of power supply indicating device
US9154222B2 (en) 2012-07-31 2015-10-06 Corning Optical Communications LLC Cooling system control in distributed antenna systems
US9419712B2 (en) 2010-10-13 2016-08-16 Ccs Technology, Inc. Power management for remote antenna units in distributed antenna systems
US9497706B2 (en) 2013-02-20 2016-11-15 Corning Optical Communications Wireless Ltd Power management in distributed antenna systems (DASs), and related components, systems, and methods
US9509133B2 (en) 2014-06-27 2016-11-29 Corning Optical Communications Wireless Ltd Protection of distributed antenna systems
US9653861B2 (en) 2014-09-17 2017-05-16 Corning Optical Communications Wireless Ltd Interconnection of hardware components
US9685782B2 (en) 2010-11-24 2017-06-20 Corning Optical Communications LLC Power distribution module(s) capable of hot connection and/or disconnection for distributed antenna systems, and related power units, components, and methods
US9699723B2 (en) 2010-10-13 2017-07-04 Ccs Technology, Inc. Local power management for remote antenna units in distributed antenna systems
US9785175B2 (en) 2015-03-27 2017-10-10 Corning Optical Communications Wireless, Ltd. Combining power from electrically isolated power paths for powering remote units in a distributed antenna system(s) (DASs)
US10257056B2 (en) 2012-11-28 2019-04-09 Corning Optical Communications LLC Power management for distributed communication systems, and related components, systems, and methods
US10455497B2 (en) 2013-11-26 2019-10-22 Corning Optical Communications LLC Selective activation of communications services on power-up of a remote unit(s) in a wireless communication system (WCS) based on power consumption

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CN1116610C (en) 1999-10-20 2003-07-30 神达电脑股份有限公司 Rotation speed measuring circuit for electric fan
CN2675913Y (en) 2003-11-28 2005-02-02 幸孺企业有限公司 Improved caution structure of cooling fan
CN2731561Y (en) 2004-10-13 2005-10-05 七盟电子工业股份有限公司 Failure warning system of radiator fan

Cited By (18)

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US10045288B2 (en) 2010-10-13 2018-08-07 Corning Optical Communications LLC Power management for remote antenna units in distributed antenna systems
US9699723B2 (en) 2010-10-13 2017-07-04 Ccs Technology, Inc. Local power management for remote antenna units in distributed antenna systems
US9419712B2 (en) 2010-10-13 2016-08-16 Ccs Technology, Inc. Power management for remote antenna units in distributed antenna systems
US10104610B2 (en) 2010-10-13 2018-10-16 Corning Optical Communications LLC Local power management for remote antenna units in distributed antenna systems
US10425891B2 (en) 2010-10-13 2019-09-24 Corning Optical Communications LLC Power management for remote antenna units in distributed antenna systems
US10420025B2 (en) 2010-10-13 2019-09-17 Corning Optical Communications LLC Local power management for remote antenna units in distributed antenna systems
US9685782B2 (en) 2010-11-24 2017-06-20 Corning Optical Communications LLC Power distribution module(s) capable of hot connection and/or disconnection for distributed antenna systems, and related power units, components, and methods
US10454270B2 (en) 2010-11-24 2019-10-22 Corning Optical Communicatons LLC Power distribution module(s) capable of hot connection and/or disconnection for wireless communication systems, and related power units, components, and methods
CN102749974A (en) * 2011-04-22 2012-10-24 鸿富锦精密工业(深圳)有限公司 Fan failure alarm circuit
CN103218282A (en) * 2012-01-18 2013-07-24 精英电脑股份有限公司 Power supply indicating device with fan monitoring function and control method of power supply indicating device
US9154222B2 (en) 2012-07-31 2015-10-06 Corning Optical Communications LLC Cooling system control in distributed antenna systems
US9729251B2 (en) 2012-07-31 2017-08-08 Corning Optical Communications LLC Cooling system control in distributed antenna systems
US10257056B2 (en) 2012-11-28 2019-04-09 Corning Optical Communications LLC Power management for distributed communication systems, and related components, systems, and methods
US9497706B2 (en) 2013-02-20 2016-11-15 Corning Optical Communications Wireless Ltd Power management in distributed antenna systems (DASs), and related components, systems, and methods
US10455497B2 (en) 2013-11-26 2019-10-22 Corning Optical Communications LLC Selective activation of communications services on power-up of a remote unit(s) in a wireless communication system (WCS) based on power consumption
US9509133B2 (en) 2014-06-27 2016-11-29 Corning Optical Communications Wireless Ltd Protection of distributed antenna systems
US9653861B2 (en) 2014-09-17 2017-05-16 Corning Optical Communications Wireless Ltd Interconnection of hardware components
US9785175B2 (en) 2015-03-27 2017-10-10 Corning Optical Communications Wireless, Ltd. Combining power from electrically isolated power paths for powering remote units in a distributed antenna system(s) (DASs)

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