CN201198838Y - Fan speed-regulating alarming device - Google Patents
Fan speed-regulating alarming device Download PDFInfo
- Publication number
- CN201198838Y CN201198838Y CNU2008200932097U CN200820093209U CN201198838Y CN 201198838 Y CN201198838 Y CN 201198838Y CN U2008200932097 U CNU2008200932097 U CN U2008200932097U CN 200820093209 U CN200820093209 U CN 200820093209U CN 201198838 Y CN201198838 Y CN 201198838Y
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Abstract
The utility model discloses a fan speed controlling warning device used by matching the fan, which comprises a fan alignment circuit, a judging circuit and a warning circuit. The input ends of the fan alignment circuit, the judging circuit and the warning circuit are connected with a power; the output end of the fan alignment circuit is connected with the fan; the output end of the judging circuit is respectively connected with the fan and the warning circuit; when in use, the product not only can control and adjust the speed of the fan according to the requirements of users for realizing the function of reducing the noise, but also can well distinguish the low-speed working state of the fan and the malfunction state of the fan, and also can make the working range of the fan electrodeless adjusted within the range from 40 percent to 100 percent speed and can warn quickly and strikingly without misinformation when the fan has problems under any working state; during the process of reducing the noise, the malfunction of the fan can not lead an alignment device with over-high temperature to be damaged, thus realizing the aim of effectively protecting the safe running of the product under a low-noise working state.
Description
Technical field
The present invention relates to a kind of fan heat radiation field, specifically, be meant a kind of device that can control fan speed and fan failure warning.
Background technique
Along with development of science and technology, increasing electric equipment arises at the historic moment, and along with the power of electric equipment is increasing, the thing followed is exactly for guaranteeing the normal operation of these equipment, and is promptly more and more higher to the heat radiation requirement of product, still, noise inevitably increases after the speed that improves fan, particularly in small-sized enclosed space, bigger noise allows the people upset, and fan speed-regulating equipment is also come out one after another in this case.But once fan is out of order, will exist fan to adjust product can be because of the too high hidden danger of damaging of temperature, and for fear of producing such hidden danger, the dealer can expect utilizing fan failure warning product to avoid.
Under this background, a kind ofly can realize promptly that fan speed is regulated and to guarantee fan again, but a problem existing of this circuit is at present, when fan is in the state of low speed running if the circuit that can report to the police that is out of order has just occurred, this alarm might be reported by mistake, makes the people think that fan has fault.
The model utility content
The purpose of this utility model is to provide a kind of fan speed-regulating warning device, it can overcome above-mentioned defective, with fan speed-regulating and two kinds of effective combinations of circuit of warning function, can well determine the state and the out of order state of fan tick-over, it both can make operating range electrodeless adjusting between 40% to 100% speed of fan, can finish also that be out of order under any working state can both be quick and eye-catching caution and phenomenon can not occur reporting by mistake; Make the user when reducing noise, can not cause the result of the too high damage of regulating device temperature, can reach the order ground of safe operation under the working state of low noise of effective protection product because of fan failure.
In order to achieve the above object, the technological scheme that the utility model adopted is:
A kind of fan speed-regulating warning device, cooperate fan to use, it comprises fan adjustment circuit, decision circuitry and warning circuit, the input end that fan is adjusted circuit, decision circuitry and warning circuit links to each other with power supply, the output terminal that fan is adjusted circuit links to each other with fan, and the output terminal of decision circuitry links to each other with fan and warning circuit respectively.
Above-mentioned fan is adjusted circuit, it comprises an adjustable resistance and resistance and one group of triode, adjustable resistance is in parallel with triode, the collector electrode of triode links to each other with power supply, the base stage of triode links together, the base stage below is provided with the resistance that can set fan minimum operation speed, and the emitter of triode links to each other with fan.Adjustable resistance is used for regulating triode basis set voltage, in order to the conducting degree of saturation of control triode.The pull down resistor of transistor base is the minimum operation speed that is used for setting fan, and promptly fan is adjusted to the setting value of minimum speed.
In addition, generally speaking, when fan operated at full speed, the fan negative pole was received ground through one several ohm resistance, and its voltage is low level.This negative pole can become high level in the time of out of order, whether so just be easy to distinguish out fan is out of order, but after the speed of turning down fan, electric current increases in its circuit, thereby the voltage that makes the fan negative pole also rises to some extent, and during the low cruise and the cathode voltage difference of fan when being out of order very little.Speed is low more, and its cathode voltage is high relatively more, and the cathode voltage difference after being out of order is more little.Allow circuit judge into fan failure by accident and cause warning with regard to being easy to like this.Therefore, this decision circuitry, it comprises comparator LM358 and resistance, No. 8 pin positions of comparator LM358 link to each other with power supply, No. 3 pin positions and resistance are in series, and the other end of resistance links to each other with fan, and No. 2 pin positions of comparator LM358 link to each other with the other end of resistance, No. 4 pin position ground connection, its No. 1 pin position links to each other with warning circuit.This comparator LM358, it is the difference of out of order negative pole minimum voltage when being used for judging the negative pole ceiling voltage of run duration of fan lowest speed and low cruise, because the fan run duration can make and produce some Flutter in the circuit, so just cause the alarm wrong report easily, be used for leaching impulsive noise signal so increase the electric capacity of two parallel connections between resistance and fan, problem is solved.
Above-mentioned warning circuit, it mainly comprises buzzer, key switch, resistance and d type flip flop NC7SZ74, No. 2 of d type flip flop NC7SZ74 and No. 7 pin positions link to each other with power supply, and resistance is located between key switch and the d type flip flop NC7SZ74, and No. 5 pin positions of d type flip flop link to each other with buzzer.
Between buzzer and d type flip flop NC7SZ74, also be provided with an electric capacity, this electric capacity of both positive and negative polarity cross-over connection of buzzer.
It also further comprises a LED lamp above-mentioned warning circuit, and it links to each other with d type flip flop NC7SZ74.
Buzzer is to send sound after fan is out of order, and is luminous when the LED lamp is the fan warning.D type flip flop and key switch are can close buzzer sound when going in-situ processing after the user finds the fan warning only to stay the LED indication.The electric capacity of a 0.01uF of positive and negative end cross-over connection of buzzer, its effect are to solve front end not filter clean Flutter and flow to and trigger buzzer warning here.
After adopting said structure, during use, this fan speed-regulating warning facility is the comprehensively now single speed-regulating function in the field and the product of warning function, it not only can be used as the speed governing warning facility, the speed that not only can go according to user's needs to control and regulate fan reaches the function that reduces noise, but also can well determine the state and the out of order state of fan tick-over, it both can make operating range electrodeless adjusting between 40% to 100% speed of fan, can finish also that be out of order under any working state can both be quick and eye-catching caution and phenomenon can not occur reporting by mistake; Make the user when reducing noise, can not cause the result of the too high damage of regulating device temperature, can reach the order ground of safe operation under the working state of low noise of effective protection product because of fan failure.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model;
Fig. 2 adjusts the circuit diagram of circuit for the utility model fan;
Fig. 3 is the circuit diagram of the utility model decision circuitry;
Fig. 4 is the circuit diagram of the utility model warning circuit.
Embodiment
Please refer to shown in Figure 1, the utility model discloses a kind of fan speed-regulating warning device, cooperate fan 1 to use, it comprises fan adjustment circuit 2, decision circuitry 3 and warning circuit 4, wherein: the input end that fan is adjusted circuit 2, decision circuitry 3 and warning circuit 4 links to each other with power supply 5, the output terminal that fan is adjusted circuit 2 links to each other with fan 1, and the output terminal of decision circuitry 3 links to each other with fan 1 and warning circuit 4 respectively.
Consult shown in Figure 2, fan is adjusted circuit 2, it comprises an adjustable resistance 21 and resistance 22 and one group of triode 23, in the present embodiment, triode 23 is two, and adjustable resistance 21 is in parallel with triode 23, the collector electrode c of triode 23 links to each other with power supply 5, the base stage b of two triodes 23 links together, and base stage b below is provided with the resistance 22 that can set fan 1 minimum operation speed, and the emitter e of triode 23 links to each other with fan 1.Adjustable resistance 21 is used for regulating triode 23 base stage b voltages, in order to the conducting degree of saturation of control triode 23.The pull down resistor 22 of triode 23 base stage b is the minimum operation speed that is used for setting fan 1, and promptly fan 1 is adjusted to the setting value of minimum speed.
Consult shown in Figure 3, the difference of out of order negative pole minimum voltage during for the negative pole ceiling voltage of the run duration of judging the fan lowest speed and low cruise, this decision circuitry 3, it comprises that model is LM358 comparator 31 and resistance 32, No. 8 pin positions of comparator 31 link to each other with power supply 5, No. 3 pin positions and resistance 32 are in series, the other end of resistance 32 links to each other with the electric capacity 33 of two parallel connections, electric capacity 33 links to each other with fan 1, No. 2 pin positions of comparator 31 link to each other with the other end of resistance 32, No. 4 pin position ground connection, its No. 1 pin position links to each other with warning circuit 4.
Consult shown in Figure 4, warning circuit 4, it comprises that buzzer 41, key switch 42, resistance 43 and model are the d type flip flop 44 of NC7SZ74, No. 2 of d type flip flop 44 and No. 7 pin positions link to each other with power supply 5, resistance 43 is located between key switch 42 and the d type flip flop 44, and No. 5 pin positions of d type flip flop 44 link to each other with buzzer 41.
Also be provided with an electric capacity 45 at buzzer 41 and 44 of d type flip flops, this electric capacity 45 of the both positive and negative polarity cross-over connection of buzzer 41.
It also further comprises a red LED lamp 46 and green power supply indication LED lamp 47 above-mentioned warning circuit, and red LED lamp 46 links to each other with d type flip flop 44.
Specific embodiment is enumerated in the invention, is not in order to restriction the invention, in not breaking away from the present invention's spirit scope, to those skilled in the art, can do various variations, modification and application, and all this all still belongs to the protection domain of this patent.
Claims (7)
1. fan speed-regulating warning device, cooperate fan to use, it is characterized in that: it comprises fan adjustment circuit, decision circuitry and warning circuit, the input end that fan is adjusted circuit, decision circuitry and warning circuit links to each other with power supply, the output terminal that fan is adjusted circuit links to each other with fan, and the output terminal of decision circuitry links to each other with fan and warning circuit respectively.
2. fan speed-regulating warning device as claimed in claim 1, it is characterized in that: described fan is adjusted circuit, it comprises an adjustable resistance and resistance and one group of triode, adjustable resistance is in parallel with triode, the collector electrode of triode links to each other with power supply, the base stage of triode links together, and the base stage below is provided with the resistance that can set fan minimum operation speed, and the emitter of triode links to each other with fan.
3. fan speed-regulating warning device as claimed in claim 1, it is characterized in that: described decision circuitry, it comprises comparator LM358 and resistance, No. 8 pin positions of comparator LM358 link to each other with power supply, No. 3 pin positions and resistance are in series, and the other end of resistance links to each other with fan, and No. 2 pin positions of comparator LM358 link to each other with the other end of resistance, No. 4 pin position ground connection, its No. 1 pin position links to each other with warning circuit.
4. fan speed-regulating warning device as claimed in claim 3 is characterized in that: described decision circuitry also comprises the electric capacity of two parallel connections, and two shunt capacitances are connected between resistance and the fan.
5. fan speed-regulating warning device as claimed in claim 1, it is characterized in that: described warning circuit, it mainly comprises buzzer, key switch, resistance and d type flip flop NC7SZ74, No. 2 of d type flip flop NC7SZ74 and No. 7 pin positions link to each other with power supply, resistance is located between key switch and the d type flip flop NC7SZ74, and No. 5 pin positions of d type flip flop link to each other with buzzer.
6. fan speed-regulating warning device as claimed in claim 5 is characterized in that: also be provided with an electric capacity between buzzer and d type flip flop NC7SZ74, this electric capacity of both positive and negative polarity cross-over connection of buzzer.
7. fan speed-regulating warning device as claimed in claim 5 is characterized in that: it also further comprises a LED lamp described warning circuit, and it links to each other with d type flip flop NC7SZ74.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200932097U CN201198838Y (en) | 2008-04-07 | 2008-04-07 | Fan speed-regulating alarming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200932097U CN201198838Y (en) | 2008-04-07 | 2008-04-07 | Fan speed-regulating alarming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201198838Y true CN201198838Y (en) | 2009-02-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200932097U Expired - Fee Related CN201198838Y (en) | 2008-04-07 | 2008-04-07 | Fan speed-regulating alarming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201198838Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878095A (en) * | 2011-07-14 | 2013-01-16 | 鸿富锦精密工业（深圳）有限公司 | Alarm circuit for failure of fan |
| CN102900689A (en) * | 2012-11-13 | 2013-01-30 | 上海斐讯数据通信技术有限公司 | Fan speed regulation warning system |
| CN107066005A (en) * | 2017-04-18 | 2017-08-18 | 深圳市菲菱科思通信技术股份有限公司 | A kind of power switch and voltage regulating and controlling circuit |
| CN109236697A (en) * | 2018-10-29 | 2019-01-18 | 安徽四创电子股份有限公司 | A kind of blower fan control system |
-
2008
- 2008-04-07 CN CNU2008200932097U patent/CN201198838Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878095A (en) * | 2011-07-14 | 2013-01-16 | 鸿富锦精密工业（深圳）有限公司 | Alarm circuit for failure of fan |
| CN102900689A (en) * | 2012-11-13 | 2013-01-30 | 上海斐讯数据通信技术有限公司 | Fan speed regulation warning system |
| CN102900689B (en) * | 2012-11-13 | 2016-02-24 | 上海斐讯数据通信技术有限公司 | A kind of fan speed-regulating alarm system |
| CN107066005A (en) * | 2017-04-18 | 2017-08-18 | 深圳市菲菱科思通信技术股份有限公司 | A kind of power switch and voltage regulating and controlling circuit |
| CN109236697A (en) * | 2018-10-29 | 2019-01-18 | 安徽四创电子股份有限公司 | A kind of blower fan control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090225 Termination date: 20160407 |