CN201562223U - Server system - Google Patents
Server system Download PDFInfo
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- CN201562223U CN201562223U CN2009201685176U CN200920168517U CN201562223U CN 201562223 U CN201562223 U CN 201562223U CN 2009201685176 U CN2009201685176 U CN 2009201685176U CN 200920168517 U CN200920168517 U CN 200920168517U CN 201562223 U CN201562223 U CN 201562223U
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- Prior art keywords
- wave width
- pulse wave
- width modulation
- modulation signal
- voltage
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Abstract
The utility model provides a server system comprising a plurality of main boards, a control circuit and a system fan, wherein each main board can output a pulse-wave width modulating signal; the control circuit at least comprises a plurality of regulating circuits to couple with the main boards, wherein each regulating circuit receives a pulse-wave width modulating signal output by the corresponding the main board to generate an output end voltage; a comparator compares the output end voltages generated by the regulating circuits to output a compared result signal; and a selector outputs one of the pulse-wave width modulating signals according to the compared result signal. The system fan rotates according to the pulse-wave width modulating signals output by the selector.
Description
Technical field
The utility model relates to a kind of server system, and particularly controls the server system of rotation speed of the fan relevant for a kind of tool.
Background technology
Usually has the high thermal source electronic component of generation in the server, as CPU, chipset, power supply and internal memory etc.The radiator fan that therefore can be equiped with a system in the server the inside comes picking out outside the server shell that each electronic component produces avoided the damage that causes electronic component because of overheated.
Under traditional framework, these electronic components are built respectively and are put on different motherboards, and each motherboard can produce a control signal according near the thermal sensor testing result the carrying thermal source.Usually between motherboard and radiator fan, can build and be equipped with a specific chip monitoring, handle, export to radiator fan one run signal, allow radiator fan rotate in view of the above in order to a plurality of control signals to these motherboards.
Because traditional control circuit of cooling fan needs a specific chip monitoring to come processing control signals, its height of controlling cost.Therefore there is a kind of demand for a kind of circuit that reduces cost and can accurately control rotation speed of the fan.
The utility model content
Therefore, a purpose of the present utility model is to provide a kind of server system, and it has does not need specific chip monitoring can control the circuit of rotation speed of the fan again.
According to the utility model one embodiment, a kind of control circuit of cooling fan is installed in the server system, and wherein this server system comprises a plurality of motherboards, and each motherboard can be exported a pulse wave width modulation signal; One control circuit comprises at least: a plurality of adjustment circuit couple those motherboards, a comparer respectively, couple those adjustment circuit and a selector switch and couple this comparer.Wherein each those adjust circuit and receive the pulse wave width modulation signal that respective hosts plates are exported, this pulse wave width modulation signal can be adjusted circuit to this and operate and produce an output end voltage.Comparer is adjusted output end voltages that circuit produced in order to compare those, and exports a compare result signal according to this.Selector switch according to this compare result signal export those pulse wave width modulation signals one of them.One radiator fan, wherein this radiator fan rotates according to this pulse wave width modulation signal of this selector switch output.
According to the utility model one embodiment, wherein each those adjustment circuit comprises a power supply, a switching switch, an electric capacity, an inductance and a diode at least, wherein this electric capacity, this inductance and this diode form a loop, the conducting of this change-over switch of pulse wave width modulation signal controlling of a correspondence with end.Wherein this output end voltage is the voltage at these two electric capacity two ends, and this change-over switch is a metal oxide semitransistor, and this selector switch is a multiplexer.
The utility model has following advantage at least.By combine pulse wave width modulation (PWM) signal of selecting output of comparer with selector switch, can replace traditional specific chip monitoring, reduce cost of products.In addition, only need one to discharge and recharge the path, can respectively import the size of pwm signal dutycycle, reduce the complexity of circuit in a large number.
Description of drawings
For above-mentioned and other purpose of the present utility model, feature, advantage and embodiment can be become apparent, appended the description of the drawings is as follows:
Figure 1 shows that the voltage-dropping type circuit skeleton diagram of use in the utility model;
Figure 2 shows that comparer and the selector switch skeleton diagram of use in the utility model;
Figure 3 shows that control circuit of cooling fan according to another embodiment of the utility model.
[main element symbol description]
200 voltage-dropping type circuit
201 input power supplys
202 change-over switches
203 diodes
204 inductance
205 electric capacity
206 output voltages
301,302,413,414,415 and 416 motherboards
304 and 305 adjust circuit
306 comparers
307 selector switchs
308 and 417 radiator fans
407,408,409,410,411 and 412 adjust circuit
401,402 and 403 comparers
404,405 and 406 selector switchs
Embodiment
The utility model promptly is that the pwm signal that utilizes a step-down (buck) circuit that each motherboard is produced converts voltage output to, because the big more pwm signal of dutycycle has big more voltage at the adjustment circuit output end.The utility model utilizes the voltage that a comparer is respectively changed out more according to this, picks out the pairing pwm signal of maximum voltage, with control a radiator fan according to this dutycycle of pwm signal rotate.
Consult and Figure 1 shows that the voltage-dropping type circuit skeleton diagram of use in the utility model.Voltage-dropping type circuit 200 comprises that an input power supply 201, switches switch 202, a diode 203, an inductance 204 and an electric capacity 205.Wherein the conducting of pwm signal control its switch 202 with end.In one embodiment, this change-over switch 202 is a metal-oxide semiconductor (MOS) (MOS) transistor.The mode of operation of voltage-dropping type circuit is as described below:
When change-over switch 202 during in conducting state, the power supply that is produced by input power supply 201 can provide to load RL.The electric current inductance 204 of can forward flowing through, and make the voltage on the inductance 204 increase, that is the pressure drop meeting of moment is on inductance 204.Yet electric current be not transient flow through inductance 204, but presenting property increase, also set up a magnetic field this moment, and also have the voltage of band polarity output to produce in load.Because change-over switch 202 is in state of saturation, so the current potential of the negative electrode of diode 203 approximates the voltage of input power supply 201, so diode 203 is in the reverse bias state.Electric capacity 205 is recharged simultaneously.
When change-over switch 202 during in cut-off state, inductance 204 stored magnetic fields can be released, and this moment, the polarity of voltage on the inductance 204 can be inverted, make the current potential of negative electrode of diode 203 become negative voltage, therefore diode 203 is in the forward bias voltage drop state, that is diode 203 is in conducting state.At this moment, electric capacity 205 stored energy can be released into load RL via diode 203 and inductance 204.And presenting property of the electromagnetic field decline on the inductance 204, and energy is supplied to load.Because change-over switch 202 is to be controlled its conducting and ended by a pwm signal, therefore above-mentioned circuit operation will be an action that goes round and begins again.Wherein output voltage (VO) 206 is as follows with input power supply (VI) 201 relation derivations:
VO/VI＝D＝T
ON/T
T wherein
ONBe the time of change-over switch 202 when the conducting state, T is a set time length.In other words, the time that is in conducting state when change-over switch 202 is long more, that is the dutycycle of pwm signal is big more, and then at the output voltage (VO) 206 at load RL place, that is the terminal voltage of electric capacity 205 is big more.According to this, a pwm signal can convert voltage signal output through adjusting circuit thus to.
In the utility model, the pwm signal that each motherboard produces is after becoming voltage output via the adjustment circuit conversion, can be transferred into a comparer and compare, so as to selecting the pairing pwm signal of maximum output voltage, control radiator fan according to this dutycycle of pwm signal rotate.
Figure 2 shows that according to control circuit of cooling fan of the present utility model.Below will be that embodiment carries out explanation of the present utility model with server with two motherboards, however the utility model do not exceed with this embodiment, also can be applicable in the server system of a plurality of motherboards of tool.Server radiator fan control circuit 300 of the present utility model comprises that two adjustment circuit 304 and 305, a comparer 306 couple this two adjustment circuit 304 and 305 and one selector switch 307 couples this comparer 306.Wherein motherboard 301 according to its heat that produces of the electronic component that carries, produce the pulse wave width modulation signal PWM 1 of a tool duty ratio corresponding (duty cycle).Motherboard 302 also according to its heat that produces of the electronic component that carries, produce the pulse wave width modulation signal PWM 2 of a tool duty ratio corresponding.In addition, pulse wave width modulation signal PWM 1 and PWM2 also can be transferred to selector switch 307, for the usefulness of follow-up selection operation.
Pulse wave width modulation signal PWM 1 and PWM 2 can send to respectively and adjust circuit 304 and 305 and use and convert voltage output to.In the present embodiment, adjust circuit 304 and convert pulse wave width modulation signal PWM 1 to a voltage V
O1Output.Same, adjust circuit 305 and convert pulse wave width modulation signal PWM 2 to a voltage V
O2Output.The positive-negative input end of comparer 306 couples with two output terminals of adjusting circuit 304 and 305 respectively, receives the voltage V after adjusting circuit 304 and 305 conversions respectively
O1With V
O2As voltage V
O1Greater than voltage V
O2, on behalf of pulse wave width modulation signal PWM 1, comparer 306 outputs one positive signal have bigger dutycycle.This positive signal can be transmitted to a selector switch 307, this moment, selector switch 307 meetings were selected pulse wave width modulation signal PWM1 according to this positive signal, and export to a radiator fan 308, allow radiator fan 308 rotate according to the dutycycle of pulse wave width modulation signal PWM 1.In another embodiment, as voltage V
O1Less than voltage V
O2The time, on behalf of pulse wave width modulation signal PWM 2, comparer 306 outputs one negative polarity signal have bigger dutycycle.This negative polarity signal can be transmitted to selector switch 307, this moment, selector switch 307 meetings were selected pulse wave width modulation signal PWM 2 according to this negative polarity signal, and export to a radiator fan 308, allow radiator fan 308 rotate according to the dutycycle of pulse wave width modulation signal PWM 2.Wherein selector switch 307, for example are a multiplexer.
Figure 3 shows that the utility model is applied to the summary icon of a tool four motherboard servers.Wherein motherboard 413 according to its heat that produces of the electronic component that carries, produce the pulse wave width modulation signal PWM 1 of a tool duty ratio corresponding (duty cycle).Motherboard 414 also according to its heat that produces of the electronic component that carries, produce the pulse wave width modulation signal PWM 2 of a tool duty ratio corresponding.Wherein pulse wave width modulation signal PWM 1 and PWM 2, the adjustment circuit 407 and 408 via correspondence converts voltage V to respectively
O1And V
O2Output.In addition, pulse wave width modulation signal PWM 1 and PWM 2 also can be transferred to selector switch 404, for the usefulness of follow-up selection operation.The positive-negative input end of comparer 401 can couple with adjusting circuit 407 and 408 respectively, so as to comparative voltage V
O1And V
O2Voltage swing.Similar, motherboard 415 according to its heat that produces of the electronic component that carries, produce the pulse wave width modulation signal PWM 3 of a tool duty ratio corresponding (duty cycle).Motherboard 416 also according to its heat that produces of the electronic component that carries, produce the pulse wave width modulation signal PWM 4 of a tool duty ratio corresponding.Wherein pulse wave width modulation signal PWM 3 and PWM 4, the adjustment circuit 409 and 410 via correspondence converts voltage V to respectively
O3And V
O4Output.In addition, pulse wave width modulation signal PWM 3 and PWM 4 also can be transferred to selector switch 405, for the usefulness of follow-up selection operation.The positive-negative input end of comparer 402 can couple with adjusting circuit 409 and 410 respectively, so as to comparative voltage V
O3And V
O4Voltage swing.
On the other hand, the output of selector switch 404 and selector switch 412 also can directly be transferred to selector switch 406, for the usefulness of follow-up selection.In one embodiment, as voltage V
O1Greater than V
O2Represent pulse wave width modulation signal PWM 1 to have bigger dutycycle than pulse wave width modulation signal PWM 2, this moment, comparer 401 can be given selector switch 404 by output one positive signal, allow selector switch 404 in view of the above positive signal select pulse wave width modulation signal PWM 1 output.And as voltage V
O4Greater than V
O3Represent pulse wave width modulation signal PWM 4 to have bigger dutycycle than pulse wave width modulation signal PWM 3, this moment, comparer 402 can be given selector switch 405 by output one negative polarity signal, allow selector switch 405 in view of the above the negative polarity signal select pulse wave width modulation signal PWM 4 outputs.
Then, the pulse wave width modulation signal PWM 4 of the pulse wave width modulation signal PWM 1 of selector switch 404 output and selector switch 405 outputs can be respectively converts voltage V to via the adjustment circuit 411 and 412 of correspondence
O1And V
O4In addition, pulse wave width modulation signal PWM 1 and PWM 4 also can be transferred to selector switch 406, for the usefulness of follow-up selection operation.The positive-negative input end of comparer 403 can couple with adjusting circuit 411 and 412 respectively, so as to comparative voltage V
O1And V
O4Voltage swing.In one embodiment, when pulse wave width modulation signal PWM 4 has bigger dutycycle than pulse wave width modulation signal PWM 1, comparer 403 meeting outputs this moment one negative polarity signal is given selector switch 406, allow selector switch 406 in view of the above the negative polarity signal select pulse wave width modulation signal PWM 4, and export to a radiator fan 417, allow radiator fan rotate according to the dutycycle of pulse wave width modulation signal PWM 4.
By above-mentioned the utility model embodiment as can be known, application the utlity model has following advantage.By the combine pwm signal of selecting output of comparer with selector switch, can replace traditional specific chip monitoring, reduce cost of products.In addition, only need an adjustment circuit to convert pwm signal to voltage output, respectively import the size of pwm signal dutycycle again by comparer, reduce the complexity of circuit in a large number.
Though the utility model discloses as above with embodiment; right its is not in order to limit the utility model; any person skilled in the art; in not breaking away from spirit and scope of the present utility model; when can being used for a variety of modifications and variations, therefore protection domain of the present utility model is as the criterion when looking the scope that claims define.
Claims (5)
1. a server system is characterized in that, comprising:
A plurality of motherboards, each motherboard can be exported a pulse wave width modulation signal;
One control circuit comprises:
A plurality of adjustment circuit couple those motherboards respectively, wherein each those adjust circuit and receive a pulse wave width modulation signal should motherboard exporting, this pulse wave width modulation signal can be adjusted circuit to this and operate and produce an output end voltage;
One comparer couples those and adjusts circuit, in order to relatively those adjust the output end voltage that circuit produced, and exports a compare result signal according to this; And
One selector switch couples this comparer, and according to this compare result signal export those pulse wave width modulation signals one of them; And
One radiator fan, wherein this radiator fan rotates according to this pulse wave width modulation signal of this selector switch output.
2. server system according to claim 1, it is characterized in that, each those adjustment circuit comprises a power supply, at least and switches switch, an electric capacity, an inductance and a diode, wherein this electric capacity, this inductance and this diode form a loop, the conducting of this change-over switch of pulse wave width modulation signal controlling of a correspondence with end.
3. server system according to claim 2 is characterized in that, this output end voltage is the voltage at these electric capacity two ends.
4. server system according to claim 2 is characterized in that, this change-over switch is a metal oxide semiconductor transistor.
5. server system according to claim 1 is characterized in that, this selector switch is a multiplexer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201685176U CN201562223U (en) | 2009-07-28 | 2009-07-28 | Server system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201685176U CN201562223U (en) | 2009-07-28 | 2009-07-28 | Server system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201562223U true CN201562223U (en) | 2010-08-25 |
Family
ID=42627371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201685176U Expired - Fee Related CN201562223U (en) | 2009-07-28 | 2009-07-28 | Server system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201562223U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673542A (en) * | 2016-02-02 | 2016-06-15 | 浪潮(北京)电子信息产业有限公司 | Method and device for regulating and controlling rotation speed of fans in multi-control server system |
| CN106802844A (en) * | 2016-12-30 | 2017-06-06 | 郑州云海信息技术有限公司 | A kind of fan control system and method for fan control signal state |
| CN108873794A (en) * | 2018-07-12 | 2018-11-23 | 郑州云海信息技术有限公司 | A kind of control equipment of radiator fan, system and method |
-
2009
- 2009-07-28 CN CN2009201685176U patent/CN201562223U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673542A (en) * | 2016-02-02 | 2016-06-15 | 浪潮(北京)电子信息产业有限公司 | Method and device for regulating and controlling rotation speed of fans in multi-control server system |
| CN106802844A (en) * | 2016-12-30 | 2017-06-06 | 郑州云海信息技术有限公司 | A kind of fan control system and method for fan control signal state |
| CN108873794A (en) * | 2018-07-12 | 2018-11-23 | 郑州云海信息技术有限公司 | A kind of control equipment of radiator fan, system and method |
| CN108873794B (en) * | 2018-07-12 | 2021-08-10 | 郑州云海信息技术有限公司 | Control equipment, system and method of cooling fan |
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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 |
Granted publication date: 20100825 Termination date: 20150728 |
|
| EXPY | Termination of patent right or utility model |