CN203520385U - Fault detecting circuit for heat dissipation fan of computer - Google Patents
Fault detecting circuit for heat dissipation fan of computer Download PDFInfo
- Publication number
- CN203520385U CN203520385U CN201320713404.6U CN201320713404U CN203520385U CN 203520385 U CN203520385 U CN 203520385U CN 201320713404 U CN201320713404 U CN 201320713404U CN 203520385 U CN203520385 U CN 203520385U
- Authority
- CN
- China
- Prior art keywords
- diode
- triode
- resistance
- computer
- infrared
- 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
Links
Images
Abstract
The utility model discloses a fault detecting circuit for a heat dissipation fan of a computer. The fault detecting circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an infrared emission diode, an infrared receiving diode, a first triode, a second triode, a third triode, a fourth triode, a first capacitor, a second capacitor, a third capacitor, a first diode, a second diode, a third diode, an LED and a loudspeaker. The infrared emission diode and the infrared receiving diode are mounted in an opposite manner; the infrared emission diode is mounted on the front surface of the heat dissipation fan of the computer; the infrared receiving diode is mounted on the back surface of the heat dissipation fan of the computer; the stop and rotation conditions of the heat dissipation fan of the computer can be detected by emitting and receiving infrared rays; when the heat dissipation fan of the computer stops rotating, continuous alarming sound can be generated so as to remind users to check and maintain in time; various faults as the heat dissipation fan of the computer stops rotating can be effectively inhibited; meanwhile the fault detecting circuit has the advantages that the structure is simple, the used component is few, and the manufacturing cost is low; the popularization value is high.
Description
Technical field
The utility model relates to a kind of auxiliary device for computer, relates in particular to a kind of computer radiating fan failure detector circuit.
Background technology
Computer is the main tool that people surf the Net, the wide range of application, the various aspects in people's life have been pervasive to, almost all trades and professions all can be used computer, be accompanied by the use of computer, computer occurs that various faults are also seen everywhere, wherein dispelling the heat bad is the one of the main reasons that causes computer to break down, because some reason can cause the radiator fan stall of computer, if fan is by foreign matter master, fan power supply loose contact, fan damages, dust too much causes fan to be difficult to the factors such as startup, after the radiator fan stall of computer, the a large amount of heat producing while causing the CPU work in computer can not be discharged in time, cause computer work abnormal, as blue screen frequently, crash, the fault that auto stop etc. are different, damage even components and parts the serviceable life that seriously injures computer components and parts.
Utility model content
The purpose of this utility model provides a kind of computer radiating fan failure detector circuit with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, infrared-emitting diode, infrared receiving diode, the first triode, the second triode, the 3rd triode, the 4th triode, the first electric capacity, the second electric capacity, the 3rd electric capacity, the first diode, the second diode, the 3rd diode, light emitting diode and loudspeaker, the first end while of described the first resistance and the first end of described the second resistance, the first end of described the 3rd resistance, the positive pole of described the first diode, the first end of described the second electric capacity, the emitter of described the 3rd triode, the emitter of described the 3rd diode, the first end of described loudspeaker is connected with positive source input end, and the second end of described the first resistance is connected with the negative pole of described infrared-emitting diode, the anodal while of described infrared-emitting diode and the negative pole of described infrared receiving diode, the collector of described the first triode, the second end of described the 5th resistance, the second end of described the 6th resistance, the emitter of described the 4th triode is connected with power cathode, the second end of described the second resistance is connected with the base stage of described the first triode with the positive pole of described infrared receiving diode simultaneously, the emitter of described the first triode is connected with the first end of described the first electric capacity with the second end of described the 3rd resistance simultaneously, the second end of described the first electric capacity is connected with the positive pole of described the second diode with the negative pole of described the first diode simultaneously, the negative pole of described the second diode is connected with the first end of described the 4th resistance with the second end of described the second electric capacity simultaneously, the second end of described the 4th resistance is connected with the base stage of described the second triode, the collector of described the second triode is connected with the negative pole of described the 3rd diode with the negative pole of described light emitting diode simultaneously, the positive pole of described light emitting diode is connected with the first end of described the 5th resistance, the anodal while of described the 3rd diode and the first end of described the 6th resistance, the first end of described the 7th resistance is connected with the base stage of described the 3rd triode, the collector of described the 3rd triode is connected with the base stage of described the 4th triode, and the collector of described the 4th triode is connected with the second end of described the 7th resistance and the second end of described loudspeaker simultaneously.
The beneficial effects of the utility model are:
The utility model employing faces infrared-emitting diode and infrared receiving diode the mode of installation, wherein infrared-emitting diode is arranged on the front of computer radiating fan, infrared receiving diode is arranged on the reverse side of computer radiating fan, utilize ultrared the stopping and rotation situation of computer radiating fan that transmit and receive to detect, in the time of the radiator fan stall of computer, can produce lasting chimes of doom, remind the timely inspection and maintenance of user, the various faults that cause because of computer radiating fan stall have effectively been suppressed, the utlity model has circuit structure simple simultaneously, components and parts used lack and the cheap advantage of cost of manufacture, has promotional value.
Accompanying drawing explanation
Fig. 1 is circuit structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1: the utility model comprises the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, infrared-emitting diode VD1, infrared receiving diode VD2, the first triode VT1, the second triode VT2, the 3rd triode VT3, the 4th triode VT4, the first capacitor C 1, the second capacitor C 2, the 3rd capacitor C 3, the first diode D1, the second diode D2, the 3rd diode D3, LED and loudspeaker BL, the first end while of the first resistance R 1 and the first end of the second resistance R 2, the first end of the 3rd resistance R 3, the positive pole of the first diode D1, the first end of the second capacitor C 2, the emitter of the second triode VT2, the emitter of the 3rd triode VT3, the first end of loudspeaker BL is connected with positive source input end VCC, and the second end of the first resistance R 1 is connected with the negative pole of infrared-emitting diode VD1, the anodal while of infrared-emitting diode VD1 and the negative pole of infrared receiving diode VD2, the collector of the first triode VT1, the second end of the 5th resistance R 5, the second end of the 6th resistance R 6, the emitter of the 4th triode VT4 is connected with power cathode, the second end of the second resistance R 2 is connected with the base stage of the first triode VT1 with the positive pole of infrared receiving diode VD2 simultaneously, the emitter of the first triode VT1 is connected with the first end of the first capacitor C 1 with the second end of the 3rd resistance R 3 simultaneously, the second end of the first capacitor C 1 is connected with the positive pole of the second diode D2 with the negative pole of the first diode D1 simultaneously, the negative pole of the second diode D2 is connected with the first end of the 4th resistance R 4 with the second end of the second capacitor C 2 simultaneously, the second end of the 4th resistance R 4 is connected with the base stage of the second triode VT2, the collector of the second triode VT2 is connected with the negative pole of the 3rd diode D3 with the negative pole of LED simultaneously, the positive pole of LED is connected with the first end of the 5th resistance R 5, the anodal while of the 3rd diode D3 and the first end of the 6th resistance R 6, the first end of the 7th resistance R 7 is connected with the base stage of the 3rd triode VT3, the collector of the 3rd triode VT3 is connected with the base stage of the 4th triode VT4, the collector of the 4th triode VT4 is connected with the second end of the 3rd capacitor C 3 and the second end of loudspeaker BL simultaneously, and the first end of the 3rd capacitor C 3 is connected with the second end of the 7th resistance R 7.
The utility model adopts infrared-emitting diode VD1 and infrared receiving diode VD2 to face the mode of installation, wherein infrared-emitting diode VD1 is arranged on the front of computer radiating fan, infrared receiving diode VD2 is arranged on the reverse side of computer radiating fan, the infrared light that infrared-emitting diode VD1 launches can be mapped on infrared receiving diode VD2, but the flabellum that has computer radiating fan between infrared-emitting diode VD1 and infrared receiving diode VD2, during radiator fan rotation, constantly cut off light path, so infrared receiving diode VD2 receives interrupted infrared light, such the first triode VT1 just has the bias current of an impulse type, thereby the two ends in the 3rd resistance R 3 produce pulse voltage, this voltage is through the first capacitor C 1 coupling, the second diode D2 detection, after the second capacitor C 2 filtering, become level and smooth DC voltage, for the second triode VT2 provides biasing, when computer radiating fan normally rotates, this voltage is enough large, the brightness of LED is maximum, simultaneously, the voltage of the 3rd triode VT3 base stage is pulled to below 0.5V through the 3rd diode D3 by the second triode VT2, the 3rd triode VT3 cannot conducting, therefore the complementary multivibrator being comprised of the 3rd triode VT3 and the 4th triode VT4 also just cannot vibrate, loudspeaker BL just can not sound.When fan stall for a certain reason, the infrared light that infrared-emitting diode VD1 launches is mapped to always or penetrates less than on infrared receiving diode VD2, just do not have pulse current to pass through the first capacitor C 1, the second triode VT2 loses biasing can conducting, LED extinguishes, show that radiator fan stops operating, the 3rd triode VT3 is setovered simultaneously, loudspeaker BL sends chimes of doom, if it is very slow that fan turns, the second triode VT2 conducting is incomplete, LED brightness deterioration, and loudspeaker BL also can send chimes of doom.
Claims (1)
1. a computer radiating fan failure detector circuit, is characterized in that: comprise the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, infrared-emitting diode, infrared receiving diode, the first triode, the second triode, the 3rd triode, the 4th triode, the first electric capacity, the second electric capacity, the 3rd electric capacity, the first diode, the second diode, the 3rd diode, light emitting diode and loudspeaker, the first end while of described the first resistance and the first end of described the second resistance, the first end of described the 3rd resistance, the positive pole of described the first diode, the first end of described the second electric capacity, the emitter of described the second triode, the emitter of described the 3rd triode, the first end of described loudspeaker is connected with positive source input end, and the second end of described the first resistance is connected with the negative pole of described infrared-emitting diode, the anodal while of described infrared-emitting diode and the negative pole of described infrared receiving diode, the collector of described the first triode, the second end of described the 5th resistance, the second end of described the 6th resistance, the emitter of described the 4th triode is connected with power cathode, the second end of described the second resistance is connected with the base stage of described the first triode with the positive pole of described infrared receiving diode simultaneously, the emitter of described the first triode is connected with the first end of described the first electric capacity with the second end of described the 3rd resistance simultaneously, the second end of described the first electric capacity is connected with the positive pole of described the second diode with the negative pole of described the first diode simultaneously, the negative pole of described the second diode is connected with the first end of described the 4th resistance with the second end of described the second electric capacity simultaneously, the second end of described the 4th resistance is connected with the base stage of described the second triode, the collector of described the second triode is connected with the negative pole of described the 3rd diode with the negative pole of described light emitting diode simultaneously, the positive pole of described light emitting diode is connected with the first end of described the 5th resistance, the anodal while of described the 3rd diode and the first end of described the 6th resistance, the first end of described the 7th resistance is connected with the base stage of described the 3rd triode, the collector of described the 3rd triode is connected with the base stage of described the 4th triode, the collector of described the 4th triode is connected with the second end of described the 3rd electric capacity and the second end of described loudspeaker simultaneously, and the first end of described the 3rd electric capacity is connected with the second end of described the 7th resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320713404.6U CN203520385U (en) | 2013-11-12 | 2013-11-12 | Fault detecting circuit for heat dissipation fan of computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320713404.6U CN203520385U (en) | 2013-11-12 | 2013-11-12 | Fault detecting circuit for heat dissipation fan of computer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203520385U true CN203520385U (en) | 2014-04-02 |
Family
ID=50379286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320713404.6U Expired - Fee Related CN203520385U (en) | 2013-11-12 | 2013-11-12 | Fault detecting circuit for heat dissipation fan of computer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203520385U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173455A (en) * | 2019-06-27 | 2019-08-27 | 徐州工业职业技术学院 | A kind of projector multi-function protector |
-
2013
- 2013-11-12 CN CN201320713404.6U patent/CN203520385U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173455A (en) * | 2019-06-27 | 2019-08-27 | 徐州工业职业技术学院 | A kind of projector multi-function protector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205333724U (en) | Stand -by power supply voltage detecting early warning circuit | |
| CN203520385U (en) | Fault detecting circuit for heat dissipation fan of computer | |
| CN204652045U (en) | A kind of uninterruption power source | |
| CN203840625U (en) | LED chip self-detection alarm circuit | |
| TWI459924B (en) | Vacuum device with warning function and warning method thereof | |
| CN104636222A (en) | Fault detecting circuit of computer cooling fan | |
| CN203535107U (en) | Low power AC power-off alarming circuit | |
| CN104155589B (en) | A kind of IGBT failure indicating circuits | |
| CN104614408A (en) | Simple water quality detection circuit | |
| CN111736088B (en) | Power state indicating circuit | |
| CN204740697U (en) | Infrared LED fire alarm ware | |
| CN203965030U (en) | A kind of from source street noise display | |
| CN203465345U (en) | External voltage automatic detection and alarm circuit | |
| CN203455916U (en) | Smoke alarm with high sensitivity | |
| CN203151810U (en) | LED drive hot-plug control circuit | |
| CN103473880B (en) | High-sensitivity smoke alarm | |
| CN206557304U (en) | Power-fail detection circuit | |
| CN209517361U (en) | LED industry monitoring device | |
| CN203057625U (en) | Indicating lamp control circuit | |
| CN202814591U (en) | Overtemperature monitoring automatic controller | |
| CN204538381U (en) | A kind of smart jack circuit | |
| CN204304397U (en) | A kind of civil power monitoring system | |
| CN204965410U (en) | Computer CPU fan stall monitoring alarm | |
| CN203675378U (en) | Constant current driving LED circuit | |
| CN102798072A (en) | Power failure emergency illuminating lamp device |
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 |
Granted publication date: 20140402 Termination date: 20141112 |
|
| EXPY | Termination of patent right or utility model |