CN100517172C - Computer system noise reducing method based on intelligent chip - Google Patents
Computer system noise reducing method based on intelligent chip Download PDFInfo
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- CN100517172C CN100517172C CNB031211259A CN03121125A CN100517172C CN 100517172 C CN100517172 C CN 100517172C CN B031211259 A CNB031211259 A CN B031211259A CN 03121125 A CN03121125 A CN 03121125A CN 100517172 C CN100517172 C CN 100517172C
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Abstract
A method based on intelligent chip for reducing the noise of computer system features that the hardware circuit is used to monitor the temp of hot points in computer system and the rotation speed of fan is controlled according to the monitored temp, so reducing system noise. Its control program is stored in temp control chip. Its control procedure is also disclosed.
Description
Technical field
The present invention relates to a kind of noise-reduction method of computer system, particularly relate to a kind of computer system noise-reduction method based on intelligent chip.
Background technology
The height of computer system noise is one of important interior quality of a computer system.Both having satisfied the demand of system radiating, and obtained the system of low noise again, is a double-barreled question of Computer System Design.Because the actual user is when using a computer system, the load of system is less than 50% in the time more than 90%, and under most environment for use, the temperature and humidity of air does not reach the highest design objective of computer system.Therefore, reduce the noise of computer system, can realize by following temperature control technology method: the operating load and the environment for use of real-time supervisory computer system, and then make fan work in the computer system under lower rotating speed.Present temperature control technology mainly contains following two kinds of methods:
One is based on the software and hardware combination, just starts hardware controls equipment in case the software system of perceiving is under the situation of hanging down load, reduces the rotating speed of fan.The disadvantage of this mode is the resource that can take system for a long time, in case and software break down, just can't monitor as infective virus or system in case of system halt.And software and hardware in conjunction with temperature control technology have also that accuracy is lower, response speed is slow and shortcoming such as control strategy underaction.
Two are based on the technology of temperature-controlled fan.Realize reducing the purpose of noise by on fan, adding the temperature control assembly.The shortcoming of this method maximum is that the point for measuring temperature of temperature-controlled fan generally all is near the temperature of the air the fan, and this variation of temperature is very slow, can not in time reflect the load variations of system's reality, thereby can't provide timely reliable protection to system.
This shows that above-mentioned existing computer system noise-reduction method still has many defectives, and demands urgently being improved.
Because the defective that above-mentioned existing computer system noise-reduction method exists, the design people is actively studied innovation, through constantly studying, designing based on abundant practical experience and professional knowledge, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
Technical problem underlying to be solved by this invention is, overcome the defective that existing computer system noise-reduction method exists, and a kind of computer system noise-reduction method based on intelligent chip is provided, thereby make its rotating speed that can control fan effectively reach the purpose that reduces the computer system noise.
The present invention solves its technical problem underlying and realizes by the following technical solutions.According to the method that the present invention proposes, solve the problem of following three aspects:
1, the operating load of intelligent aware computer systems and working environment
Select core cpu temperature, video card ambient air temperature and memory bar ambient air temperature to represent the internal heat state of computer system, the typical case that just can estimate the current computer system basically uses pattern.Because this temperature of 3 is very big with the size differences of the configuration of computer hardware and actual working state load.DIE Temperature output pin by semiconductor temperature-sensing element and CPU detects this temperature of 3, and communicates information to special-purpose temperature control chip, solves this problem.
2, automatic fan rotational frequency control method
Make the rotating speed of fan satisfy the demand of dispelling the heat, reach best noise result simultaneously.As shown in Figure 2, method of the present invention is the minimum temperature Tmin when allowing system obtain system stability work automatically, then according to the designing requirement of system, provide the temperature range Trange of system works before maximum load, allow the rotation speed of the fan lifting that between Tmin and Tmin+Trange, is directly proportional with temperature.In order to solve near the phenomenon that the fan that might bring changes Tmin the time in the stopping time, we have provided an assumed temperature interval that is lower than Tmin, in this interval, after temperature drops to Thys (minimum point of temperature range) from Tmin, just illustrate that the present residing environment of this computer system does not need fan to assist and just can reach the system radiating demand, so just turn off fan.In this interval, temperature does not start fan after rising to Thys immediately, because this is under this temperature, fan rotates may be very unstable, have only when the temperature of monitoring reaches Tmin just to start fan, guaranteeing on the one hand has enough startup power, improves noise on the other hand greatly.
3, select intelligent chip
For the precision of the controlled variable that guarantees temperature that system monitoring obtains and output is enough to system's noise reduction of reaching best, all algorithms that the present invention adopts all are built in the temperature control chip, therefore need select intelligent temperature control chip for use.When needs obtain better quiet effect, can open the enhancing noise reduction mode of temperature control built-in chip type, under this pattern, the rate of change of control fan speed increase and decrease is littler.In addition, the intelligent temperature control chip of this class approaching continuous analog to digital converter at a high speed allows the timely sampling to all monitor channels, to guarantee the timely interrupt response to the data that surpass limit value.
The technical solution adopted in the present invention is: utilize in the hardware circuit supervisory computer system near the video card, near the internal memory and the temperature of these three focuses of cpu chip, and then the reduction or the rising of control rotation speed of the fan; Control program is built in the temperature control chip internal, and pin setting, the pin setting of measuring video card surrounding air and the temperature control chip of temperature control chip measurement cpu chip temperature are installed near the internal memory and with detected temperature and are sent to the temperature control chip; Minimum temperature Tmin when utilizing system stability work, system works temperature range Trange and assumed temperature Thys who is lower than Tmin before maximum load controls fan, its process is: be higher than the temperature range of Tmin+Trange, fan keeps maximum speed, be lower than the temperature range of Thys, fan does not turn round, temperature does not start fan after rising to Thys immediately, have only temperature to reach Tmin and just start fan, between Tmin and Tmin+Trange, the lifting that is directly proportional of rotation speed of the fan and temperature, when temperature dropped between Tmin and the Thys, fan kept the lowest speed running, temperature is turned off fan after dropping to Thys from Tmin.
The present invention further adopts following technical measures: the described temperature of utilizing focus in the hardware circuit supervisory computer system of scheme, and then the reduction or the rising of control rotation speed of the fan, it is the temperature of utilizing focus in the semiconductor element supervisory computer system, this Temperature numerical is passed to intelligent temperature control chip ADM1027, and and the numerical value set of ADM1027 compare and then the reduction or the rising of control rotation speed of the fan.
The present invention further adopts following technical measures: above-mentioned intelligent temperature control chip, also adopt ADM1031, ADT7463, LM85 intelligent temperature control chip.
The present invention further adopts following technical measures: focus is three in the described computer system of scheme, and one is near the video card, and another is near the internal memory, and the 3rd is cpu chip.
The present invention further adopts following technical measures: above-mentioned intelligent temperature control chip is installed near the internal memory.
The present invention further adopts following technical measures: the minimum temperature when the described system stability of scheme is worked is Tmin, the temperature range of this system works before maximum load is Trange, Tmin is set to 22 ℃, and Trange is set to 50 ℃, and writes the chip internal memory when the intelligent chip initialization.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, the computing machine noise-reduction method that the present invention proposes can reduce the difficulty that computer system heat radiation designs greatly.At computing machine at ordinary times under the typical application pattern, when keeping total system noise index good, adopting computer system of the present invention to generate heat than the common power that computer system allowed can be high by 30%, thereby has prolonged the serviceable life of computer system greatly.
In sum, body invention is based on the computer system noise-reduction method of intelligent chip, and it is had large improvement technically, and produced handy and practical effect in limited field, technical development space, really is a new and innovative, progressive, practical new design.
The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is circuit theory diagrams of the present invention.
Fig. 2 is control procedure figure of the present invention.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to its embodiment of computer system noise-reduction method, circuit theory and the effect thereof that foundation the present invention proposes based on intelligent chip, describe in detail as after.
See also shown in Figure 1ly, the present invention is based on the computer system noise-reduction method of intelligent chip, it mainly comprises: the circuit of intelligent temperature control chip, test video card ambient air temperature or internal memory ambient air temperature.It mainly is made up of integrated circuit ADM1027, triode, electric capacity and resistance.
Figure 1 shows that the circuit theory that the computer system noise-reduction method that the present invention is based on intelligent chip is proposed.VCCP_IN, 2.5V, 5V and four pins of 3.3SBY are feed circuit of temperature control chip itself: respectively VCCP, the V_1P5_CORE of connected system power supply, VCC3 and+12V, VCCP_IN passes through capacitor C 2 ground connection simultaneously, and the 5V pin passes through the V_3P3_STBY of resistance R 6 connected system power supplys simultaneously.The SDA pin is with after the SMB_DATA_MAIN of SMB bus is connected, and the software on system and upper strata is by this pin initialization temperature control chip or show the state of temperature control chip.SDL is the clock signal pin, is connected with the SMB_CLK_MAIN of SMB bus.Two pins of REMOTE1+ and REMOTE1-respectively through resistance R 2 is connected with the H_TEMP_SRC signal output part with the H_TEMP_RET of a known amplification, current stabilization circuit with R3 (this known circuits with the core cpu temperature signal of CPU pin output through amplification and current stabilization after export).Two pins of REMOTE2+ and REMOTE2-and Q1 have formed the circuit of testing the video card ambient air temperature with C1: REMOTE2+ is connected an end of base stage, collector and the capacitor C 1 of triode Q1, and the emitter of the other end of capacitor C 1 and triode Q1 is connected REMOTE2-simultaneously.The temperature control chip is installed near the internal memory, utilizes the control point of the temperature sensing function of himself as the internal memory ambient air temperature.TACH1-TACH4 is four velocity test circuit pins, only use the wherein CPU_FAN_TACH of the rate signal of three test fans: TACH1 connection cpu fan, TACH2 connects the REAR_FAN_TACH of aft-fan, and TACH3 connects the FNT_FAN_TACH of forefan.TACH4 is by resistance R 4 ground connection.The pwm signal of three fans of PWM1-PWM3 output: PWM1 holds through the CPU_FAN_CTRL that resistance R 1 connects cpu fan, and PWM2 connects the SMB_ALERT of SMB bus through resistance R 5 when connecting the REAR_FAN_CTRL end of aft-fan
*, PWM3 connects the FNT_FAN_CTRL of forefan.The GND pin ground connection of intelligent chip ADM1027.Triode Q1 and capacitor C 1 are installed near the video card.
See also shown in Figure 2, the control procedure that the present invention is based on the computer system noise-reduction method of intelligent chip is: be higher than the temperature range of Tmin+Trange, fan keeps maximum speed, be lower than the temperature range of Thys, fan does not turn round, temperature does not start fan after rising to Thys immediately, have only temperature to reach Tmin and just start fan, between Tmin and Tmin+Trange, the lifting that is directly proportional of rotation speed of the fan and temperature, when temperature dropped between Tmin and the Thys, fan kept the lowest speed running, temperature is turned off fan after dropping to Thys from Tmin.Wherein, Tmin be system automatically obtain system stability work the time minimum temperature, Trange is the temperature range of system works before maximum load, Thys is a temperature value for guaranteeing that fan stops setting when changeing in the time of avoiding when the lowest speed.
Tmin can be set to 22 ℃, and Trange can be set to 50 ℃.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction, for example, in the circuit proposed by the invention, the model of temperature control chip is the temperature control chip of any producer, as long as this chip can be fit to above-mentioned job requirement.Every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (6)
1, a kind of computer system noise-reduction method based on intelligent chip is characterized in that: utilize the temperature of focus in the hardware circuit supervisory computer system, and then the reduction or the rising of control rotation speed of the fan;
Control program is built in the temperature control chip internal, select core cpu temperature, video card ambient air temperature and memory bar ambient air temperature to represent the internal heat state of computer system, DIE Temperature output pin by semiconductor temperature-sensing element and CPU detects this temperature of 3, and communicates information to the temperature control chip;
The VCCP_IN of temperature control chip, 2.5V, 5V and four pins of 3.3SBY are feed circuit of temperature control chip itself, respectively VCCP, the V_1P5_CORE of connected system power supply, VCC3 and+12V, wherein the VCCP_IN pin passes through capacitor C 2 ground connection simultaneously, and the 5V pin is the V_3P3_STBY of connected system power supply simultaneously;
The SDA pin of temperature control chip is connected with the SMB_DATA_MAIN of SMB bus;
The SDL of temperature control chip is the clock signal pin, is connected with the SMB_CLK_MAIN of SMB bus; Two pins of REMOTE1+ and REMOTE1-are connected with the H_TEMP_SRC signal output part with the H_TEMP_RET of a known amplification, current stabilization circuit with R3 through resistance R 2 respectively;
Two pins of the REMOTE2+ of temperature control chip and REMOTE2-and triode Q1 have formed the circuit of testing the video card ambient air temperature with capacitor C 1: REMOTE2+ is connected an end of base stage, collector and the capacitor C 1 of triode Q1, and the emitter of the other end of capacitor C 1 and triode Q1 is connected REMOTE2-simultaneously;
Above-mentioned temperature control chip is installed near the internal memory; Above-mentioned triode Q1 and capacitor C 1 are installed near the video card;
TACH1-TACH4 is four velocity test circuit pins, only use the wherein CPU_FAN_TACH of the rate signal of three test fans: TACH1 connection cpu fan, TACH2 connects the REAR_FAN_TACH of aft-fan, TACH3 connects the FNT_FAN_TACH of forefan, and TACH4 is by resistance R 4 ground connection;
The pwm signal of three fans of PWM1-PWM3 output: PWM1 connects the CPU_FAN_CTRL end of cpu fan through resistance R 1, PWM2 connects the SMB_ALERT* of SMB bus through resistance R 5 when connecting the REAR_FAN_CTRL end of aft-fan, PWM3 connects the FNT_FAN_CTRL of forefan; The GND pin ground connection of intelligent chip ADM1027.
2, the computer system noise-reduction method based on intelligent chip according to claim 1, the 5V pin that it is characterized in that wherein said temperature control chip are the V_3P3_STBY through resistance R 6 connected system power supplys.
3, the computer system noise-reduction method based on intelligent chip according to claim 1, it is characterized in that wherein said known amplification, current stabilization circuit with the core cpu temperature signal of CPU pin output through amplification and current stabilization after export.
4, the computer system noise-reduction method based on intelligent chip according to claim 1, it is characterized in that the wherein said temperature of utilizing focus in the hardware circuit supervisory computer system, and then the reduction or the rising of control rotation speed of the fan, it is the temperature of utilizing focus in the semiconductor element supervisory computer system, this Temperature numerical is passed to intelligent temperature control chip ADM1027, and and the numerical value set of ADM1027 compare and then the reduction or the rising of control rotation speed of the fan.
5, the computer system noise-reduction method based on intelligent chip according to claim 2 is characterized in that wherein said intelligent temperature control chip, also adopts ADM1031, ADT7463, LM85 intelligent temperature control chip.
6, the computer system noise-reduction method based on intelligent chip according to claim 1, minimum temperature when it is characterized in that this system stability work is Tmin, the temperature range of this system works before maximum load is Trange, Tmin is set to 22 ℃, Trange is set to 50 ℃, and writes the chip internal memory when the intelligent chip initialization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031211259A CN100517172C (en) | 2003-03-27 | 2003-03-27 | Computer system noise reducing method based on intelligent chip |
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| CNB031211259A CN100517172C (en) | 2003-03-27 | 2003-03-27 | Computer system noise reducing method based on intelligent chip |
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| CN1534436A CN1534436A (en) | 2004-10-06 |
| CN100517172C true CN100517172C (en) | 2009-07-22 |
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| CNB031211259A Expired - Fee Related CN100517172C (en) | 2003-03-27 | 2003-03-27 | Computer system noise reducing method based on intelligent chip |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346262C (en) * | 2005-01-05 | 2007-10-31 | 英业达股份有限公司 | Fan rotary speed control system and method |
| CN101727115B (en) * | 2008-10-20 | 2012-07-18 | 鸿富锦精密工业（深圳）有限公司 | Fan control device and control method |
| CN102562637B (en) * | 2010-12-28 | 2015-06-17 | 振华电脑有限公司 | Fan rotating-speed control method and device of computer power supply |
| TWI465185B (en) | 2012-04-25 | 2014-12-11 | Sunonwealth Electr Mach Ind Co | Cooling system for portable communication device |
| CN103629137B (en) * | 2013-12-02 | 2017-01-18 | 张逸凝 | Noise reduction processing method for DCS cabinet |
| CN108799174B (en) * | 2017-05-02 | 2019-12-03 | 振华电脑有限公司 | The fan rotational frequency control method and its device of computer power supply power supply unit |
| CN110304502B (en) * | 2019-07-12 | 2021-10-22 | 深圳市海浦蒙特科技有限公司 | Control method and system for radiator fan of villa elevator control cabinet |
| CN113757152B (en) * | 2020-05-28 | 2023-05-26 | 株洲中车时代电气股份有限公司 | Speed regulation control circuit and control method for auxiliary converter fan |
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| CN1534436A (en) | 2004-10-06 |
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