CN1624662A - Method of monitoring device on AGP plate and its device - Google Patents
Method of monitoring device on AGP plate and its device Download PDFInfo
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- CN1624662A CN1624662A CNA200410061376XA CN200410061376A CN1624662A CN 1624662 A CN1624662 A CN 1624662A CN A200410061376X A CNA200410061376X A CN A200410061376XA CN 200410061376 A CN200410061376 A CN 200410061376A CN 1624662 A CN1624662 A CN 1624662A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
A method using SMBus chip to monitor component on AGP plate and its device, which relates to bus in computer and application of its chip. The method is extending SMBus node and using SMBus chip on AGP plate, to measure the parameters of figure processor such as voltage, speed of fan, temperature, using temperature as feedback signal input the monitoring chip and calculation and control of output, forming closed ring by controlling fan speed through magnifying driving circuit. The device comprises of monitoring chip on AGP plate, temperature sensor, magnifying driving circuit, fan, power source, circuit for measuring rotating speed, voltage dividing circuit. SMBus, fastener and radiating plate. It has the useful effect that the combinated monitoring AGP plate can measurement and control rotation of GPU cooling fan on the control plate, decrease noise, environmental protection and energy saving.
Description
Technical field
The present invention relates to the expansion and the application of bus in the computer and device thereof, specifically, relate to a kind of method and device thereof with device on System Management Bus (SMBus) the integrated circuit (IC) chip monitoring AGP plate.
Background technology
AGP AGP (Accelerated Graphics Port) graphic accelerating interface is widely used display card interfacing, can significantly improve the display capabilities of 3D figure, each existing a large amount of AGP display card product of big display card producer is released, the mainboard of band AGP interface is a lot, according to the priority that proposes AGPX1, AGPX2, AGPX4, AGPX8 specification is arranged.Though the graphics capability of PC is more and more stronger now, but finish careful large-scale 3D graphic depiction, the performance of PC platform is still limited, for the 3D application power of PC can be fought it out with graphics workstation, Intel Company has developed AGP, the fundamental purpose of releasing AGP is exactly the figure display capabilities of 3D figure especially that will significantly improve main flow PC, AGP is primarily aimed at the PCI display card and is handling the data transmission bottleneck situation that occurs when animation and 3D draw, original pci bus can not meet the demands far away, thereby just need as AGP, can link the interface of main memory and display card, AGP supports SMBus simultaneously, provide condition for the application of SMBus chip on AGP like this, the A face A66 pin (pin out) of AGP slot is a serial data SMBDATA line, and B face B66 pin is a serial clock SMBCLK line.
The structure and the operation conditions of the present computer of computer hardware monitoring circuit become increasingly complex, therefore most of computers all are equipped with the chip from observation circuit, can monitor the operation conditions of host computer such as various voltage, temperature, rotation speed of the fan etc. in real time, mainboard monitoring chip (for example W83L785, LM87, LM63) is generally programming device, have hardware A/D conversion and I/O interface, and many chips has SMBus.The dominant frequency of CPU and integrated circuit and integrated level are improving constantly, therefore can produce a large amount of heats, the temperature of device on the computer is risen, usually use fan to come ventilation and heat, need the monitoring CPU temperature, in these supervisory circuits widespread use pulse-length modulation (PWM) and automatic control technology, supervisory circuit can be regulated rotation speed of the fan automatically according to the temperature signal of detected element in the computer operational process, the hardware monitoring circuit can be controlled fan according to design temperature and rotate, to the CPU heat radiation, when temperature descended, rotation speed of the fan reduced automatically, when temperature rises, the wind speed rotating speed rises automatically, has reduced fan noise like this, has saved the electric weight use, prolonged fan life, can guarantee that computer effectively works.
System Management Bus (SMBus) SMBus is the chip chamber serial communication bus that Intel proposes, and comprises a data lines SMBDAT and a clock line SMBCLK, and 2 lines must be connected on the power supply with pull-up resistor during work.Each bus device all has an address, and total line length can reach more than 8 meters, can constitute the expansion of multi-computer system and peripheral components easily, and can be with the speed full duplex synchronous data transmission of 100Kbps.The advantage of SMBus is, it supports many master controls, and wherein any equipment that can send and receive can become master controller, and bus interface all has been integrated in the device, do not need to add the bus interface circuit in addition, the characteristics of plug and play (Plug andplay) are arranged.The peripheral components of all band SMBus interfaces all has answering, in computer, be widely used: the south bridge family chip ICH3 of Intel, ICH4, ICH5, ICH6 (I/O Controller HUB 6), or with the South Bridge chip VIA8235 of the product compatibility of Intel etc., also have the south bridge family chip AMD768 etc. of AMD all can to communicate with mode and the miscellaneous equipment of serial SMBus.Above the chip of described computer hardware monitoring circuit promptly be external unit on the SMBus bus.Almost all possessing SMBus on every computer, providing SMBus interface such as AGP slot on a lot of computer main boards, connecting peripheral hardware for the user.
I
2The C bus is by the I of Philips exploitation
2C (I2C) bus has standard and numerous band I of standard
2The peripheral components of C interface has formed perfect serial expansion bus, I
2The characteristics of C are the independence of structure and the simplicity that the user uses.The I2C bus has strict standard, and as the electrical specification of interface, signal sequence, bus management rule etc., and the SMBus bus is I
2A subclass (subset) of C bus/protocol, a lot of I
2The compatible SMBus bus of C bus device can directly be used on the SMBus of computer system bus, specifically sees each device description.
Though prior art has had above-mentioned all development, but the monitoring of equipment only limits to the supervisory circuit on computer main board in to computer, do not solve the monitoring that AGP goes up device, as high heating GPU chip cooling fan monitoring on the monitoring of important chip GPU operating voltage, the AGP plate on the AGP plate, fan does not have rotational speed regulation on the AGP plate, also be unable to find out their state, the height of the last GPU temperature of AGP is irrelevant with rotation speed of the fan, can not regulate fan speed automatically according to the temperature height, fan is in the full speed running state all the time, and certain noise is arranged.
Summary of the invention
Purpose of the present invention is exactly the above-mentioned defective at prior art, and a kind of method and device thereof with GPU on the SMBus chip monitoring computer AGP plate is provided; Specifically, be exactly temperature, rotation speed of the fan and the voltage measurement problem of device on the settlement computer AGP plate, and then regulate rotation speed of the fan on the AGP plate automatically, reduce noise according to its temperature height, save power, and can be by the SMBus reading and writing data of communicating by letter.
The object of the present invention is achieved like this:
1, method
This method has the following step:
1. the System Management Bus (SMBus) on the host computer AGP groove is expanded, be connected on the AGP plate by the SMBus interface on the AGP groove, being provided with the SMBus chip on this AGP plate is the circuit that core is formed, temperature, voltage, the rotation speed of the fan parameter of the circuit measuring graphic process unit (GPU) that this chip is formed;
2. use the control function of SMBus built-in chip type,, make feedback signal input monitoring chip with temperature with the temperature that sensor measurement AGP goes up GPU, export by the monitoring chip computing, through amplification driving circuit, the control cooling fan constitutes closed-loop system, regulates rotation speed of the fan automatically according to the temperature of GPU;
3. communicate by letter with SMBus main equipment on the host computer by SMBus.
The chip that on SMBus, uses, can for a kind of can with the compatible I of SMBus
2C (I2C) Bus Interface Chip.
2, device
As shown in Figure 1, this device is made up of monitoring chip (1), temperature sensor (2), amplification driving circuit (3), fan (4), power supply (5), tachometric survey match circuit (6), bleeder circuit (7), SMBus (8), securing member and heat radiator (9) on the computer AGP plate;
Monitoring chip on the AGP plate (1) is connected with temperature sensor (2), amplification driving circuit (3), tachometric survey match circuit (6), bleeder circuit (7) and SMBus (8) respectively;
Fan (4) is connected with amplification driving circuit (3);
Power supply (5) is connected with monitoring chip (1), amplification driving circuit (3), fan (4) on the AGP plate respectively, this device is connected with tachometric survey match circuit (6) between monitoring chip (1) on the AGP plate and fan (4), the voltage measurement input end of this device monitoring chip (1) on the AGP plate is connected with bleeder circuit (7), the temperature sensor of this method and device (2) or be semiconductor transducer, or be thermistor; Temperature sensor (2) can be integrated in GPU inside, this device is on the AGP plate, the serial clock SMBCLK line of SMBus, serial data SMBDATA line are drawn from the AGP slot, and the chip that this device uses on SMBus can be a kind of I that can be compatible with SMBus (8)
2C (I2C) bus chip.
The GPU of this device uses on the AGP plate+and 12V is as the adjustable working power of fan (4), with monitoring chip (1) output PWM regulation voltage.
This method or device can be without fans as semiconductor temperature difference refrigeration and heat-pipe refrigerating for the device that adopts temperature difference heat radiation on the computer AGP plate, a working voltage and temperature monitoring.
Can have this device at least on the AGP plate, if 2 GPU are arranged on the AGP, 2 these devices can be arranged, SMBus (8) chip that this method or device use on the AGP plate is as a kind of slave unit on SMBus.
The principle of work of this device is:
On the heater members on the computer AGP plate or be attached with temperature sensor (2), the output terminal of temperature sensor (2) is connected to the temperature survey port of chip (1), and temperature sensor (2) uses semiconductor transducer or thermistor.The input end of amplification driving circuit (3) is connected to the rotating speed control output end mouth of chip (1), the working power of the output control fan (4) of amplification driving circuit (3); This power supply uses on computer AGP+the 12V power supply, and with computer host power supply altogether.Securing member connects fan and heat radiator and is fixed on the AGP plate, and heat radiator conducts out with the heat of GPU.
The pulse that fan (4) rotate to produce is connected to the fan speed measurement port of chip (1) by tachometric survey match circuit (6), finishes the rotating speed counting by chip (1).
The working power circuit of device has connecting line on the AGP plate, is connected to the voltage measurement port of chip (1) by bleeder circuit (7), finishes the A/D translation operation in chip (1).
The AGP slot that the SMBus of computer (8) is connected to is connected to chip (1) from the AGP plate, is used for sending and accepting data, can communicate by letter with CPU.
3, the present invention has the following advantages and good effect.
1. because be that its method and apparatus is simple with device on the SMBus chip monitoring computer AGP plate.
2. after forming AGP plate monitoring system, can measure operating voltage and the temperature of GPU on the plate, rotation speed of the fan on the adjusting plate reduces noise, environmental protection and energy saving, and communicate by letter with host computer by SMBus (8), help to manage equipment on the AGP.
3. ratio of performance to price height has broad application prospects.
Description of drawings
Fig. 1-this device is formed block scheme;
The circuit theory diagrams of Fig. 2-embodiment 1;
The circuit theory diagrams of Fig. 3-embodiment 2;
Among Fig. 1:
SMBus chip on the 1-AGP plate;
The 2-temperature sensor;
The 3-amplification driving circuit;
The 4-fan;
The 5-power supply;
6-tachometric survey match circuit;
The 7-bleeder circuit;
8-SMBus。
9-securing member and heat radiator
Specific embodiments
The present invention is further described below in conjunction with drawings and Examples.
Intel series computer (PC, server, workstation), be integrated with South Bridge chip on the mainboard of AMD series computer, South Bridge chip inside provides SMBus primary controller, with ICH5 (82801EB) is example, ICH5 inside provides a SMBus primary controller, it comprises a SMBus master control interface, for processor and SMBus external unit (slave unit) communication provide condition, have only master controller to realize management and to detect to SMBus, as initial, stop, tranmitting data register etc., as not with the interface device of CPU, in bus, can only do to use from device, all are read, write operation all can reduce the master mode of SMBus, write operation is main send mode, and read operation is main accepting method.The compatible most I of the SMBus mode of operation of above-mentioned ICH5
2The C bus device.The SMBus interface device has one 7 bit address, can expand a plurality of bus devices, and the present invention uses on the AGP plate SMBus chip as bus slave.
At the A of AGP slot face 66 pin and B face 66 pin is respectively SMBDAT and SMBCLK, i.e. the data line of SMBus and clock line.Following embodiment 1 and embodiment 2 circuit have all used the chip of band SMBus, these chips are usually used in computer motherboard hardware monitoring circuit, rotating speed control as cpu temperature monitoring and cpu fan, its using method and circuit develop in the chip instructions, here can be transplanted on the supervisory circuit of GPU on the computer AGP plate, main difference is to change the temperature monitoring object on the AGP plate heater members GPU, controlled fan becomes GPU cooling fan on the AGP plate, and the monitoring of chip and communication role are constant.
As Fig. 2, SMBCLK and SMBDAT are connected to monitoring chip on the AGP plate in this example, promptly connect 7 pin and 8 pin of LM63, use the LM63 chip to make monitoring chip in the circuit, here LM63 is a slave unit on the SMBus, and the address of devices of LM63 is 1001100, and the major function of LM63 is as follows:
Use 2N3904 transistor or PN junction thermometric, D+, D-hold input
Automatically revise self-heating effect
Support built-in 2 utmost point pipe thermometric modes of P4 processor or GPU
Integrated PWM function of controlling fan rotating speed, PWM holds output
8 grades of speed changes able to programme are regulated, and reduce noise
Have the rotation speed of the fan counting, TACH holds input
Register compensation offset temperature
Multi-functional anti-ALERT/ rotating speed counting is selected input
10 bit digital counting, minimum 0.125 degree of differentiating of temperature
The SMBus2.0 specification is supported the overtime TIMEOUT that overflows
Compatible LM86 family device
The 8 pin design of simplifying
See list of references 4 for details
Here the LM63 working power is used 3.3V voltage, power supply source AGP goes up existing power supply, on the D+ of LM63 and D-terminal, insert 2N3904, be installed in 2N3904 on the surface of AGP plate GPU as sensor, experience the temperature of GPU, in LM63, finish the A/D conversion, 4 pin output pwm signals from LM63, through R1, R2, Q1 forms amplifying circuit, drive fan, the tachometric survey of fan is through R3, R4, the match circuit that R5 forms is from the 6 pin input speed count pulses of LM63, like this according to the temperature variation of device GPU on the AGP plate, the temperature varitrol that described supervisory circuit is formed can reduce or the rotating speed of rising fan, relevant control algorithm is carried out in LM63, and by 7 pin and 8 pin of LM63, SMBus can transceive data.Fan uses+12 to do regulated power supply in the circuit.Securing member is connected the demonstration storage chip of fan cooled GPU or heating with heat radiator.
Invention circuit theory such as Fig. 3 draw SMBDAT and SMBCLK supervisory circuit to the computer AGP plate from computer SMBus in this example, connect the SMBus of chip, to SDA and the SCL of circuit W83L785.The W83L785 that uses in AGP monitoring of tools circuit is usually used in the hardware monitoring circuit of notebook computer, the address of devices of W83L785 is 0101101, but its monitoring parameter comprises: voltage, temperature, rotation speed of the fan etc., built-in 8 ADC, 2 groups of PWM output control rotation speeds of the fan are provided, SMI#, OUT# signal and GPIO are provided, the compatible SMBus interface of band I2C/, by application software and BIOS, the user can monitor whole parameters at any time, and the information that when parameter is out-of-limit, gives a warning, the user can be provided with the high and low limit value of parameter voluntarily.
The major function of W83L785 is as follows:
2 temperature survey passages, TDX1, TDX2 support semiconductor and thermistor (temperature) sensor
4 voltage measurement passages, 3.3V, 2.5V, 1.5V, V
Core
2 groups of PWM rotation speed of the fan control outputs, PWMOUT1, PWMOUT2
The input of 2 groups of rotation speed of the fan countings, FANIN1, FANIN2
The out-of-limit interval of parameter that is provided with able to programme
The management of support application software
The I2C serial bus interface, SCL, SDA
Support Intel application program LMCD
The interruption guard signal is arranged
The encapsulation of 20 pin
Working power 2.7V～5.5V
See list of references 3 for details.
Use the working condition of GPU on the W83L785 monitoring AGP plate among Fig. 3, the input end of measuring at 2.5V is connected to resistance R 13, R14 constitutes bleeder circuit, make it the input voltage range of matching chip, equally also can use other voltage measurement end monitoring voltage of this chip, undertake the task of hardware monitoring on the AGP plate.D1 and D2 are used for temperature survey among Fig. 3, from TDX1 and TDX2 input signal.Rotate with PWM control fan, the rotating speed of fan can be measured, and forms tach signal with R3, R4, R5 and R6, R7, R8 and measures match circuit, and double fans structure is used for two GPU, the AGP display board with dual output function, or a fan cooled video memory chip.R1, R2 are pull-up resistor (if having on the main frame then can omit).Obviously also transplant the cpu fan automatic temperature control system of computer hardware monitoring circuit here easily, make temperature sensor with D1, D2, PWMOUT1 output drive fan 1, PWMOUT2 export drive fan 2, two loop independent regulation, the control function of application chip constitutes closed-loop system, and relevant control algorithm is carried out in W83L785.On this circuit use computer AGP+and the 3.3V power supply, securing member is connected fan and gives GPU or the cooling of video memory chip with heat radiator.
List of references
1、
http://www.interfacebus.com/
2, He Limin, " design of I2C bus application system ", publishing house of BJ University of Aeronautics ﹠ Astronautics
3、W83L785.pdf，
http://www.winbond.com/
4、LM63.pdf，
http://www.national.com/
5、
http://www.intel.com/
6、
http://www.smbus.org/
7、
Claims (10)
1, a kind of method with device on the SMBus chip monitoring AGP plate,
It is characterized in that the following step is arranged:
1. the System Management Bus (SMBus) on the host computer AGP groove is expanded, be connected on the AGP plate by the SMBus interface on the AGP groove, being provided with the SMBus chip on this AGP plate is the circuit that core is formed, temperature, voltage, the rotation speed of the fan parameter of the circuit measuring graphic process unit (GPU) that this chip is formed;
2. use the control function of SMBus built-in chip type,, make feedback signal input monitoring chip with temperature with the temperature that sensor measurement AGP goes up GPU, export by the monitoring chip computing, through amplification driving circuit, the control cooling fan constitutes closed-loop system, regulates rotation speed of the fan automatically according to the temperature of GPU;
3. communicate by letter with SMBus main equipment on the host computer by SMBus.
2, a kind of device with device on the SMBus chip monitoring AGP plate,
It is characterized in that: this device is made up of monitoring chip (1), temperature sensor (2), amplification driving circuit (3), fan (4), power supply (5), tachometric survey match circuit (6), bleeder circuit (7), SMBus (8), securing member and heat radiator (9) on the computer AGP plate;
Monitoring chip on the AGP plate (1) is connected with temperature sensor (2), amplification driving circuit (3), tachometric survey match circuit (6), bleeder circuit (7) and SMBus (8) respectively;
Fan (4) is connected with amplification driving circuit (3);
Power supply (5) is connected with monitoring chip (1), amplification driving circuit (3), fan (4) on the AGP plate respectively.
3, by the described a kind of device of claim 2 with device on the SMBus chip monitoring AGP plate,
It is characterized in that: between monitoring chip (1) on the AGP plate and fan (4), be connected with tachometric survey match circuit (6).
4, by the described a kind of device of claim 2, it is characterized in that with device on the SMBus chip monitoring AGP plate:
The voltage measurement input end of monitoring chip on the AGP plate (1) is connected with bleeder circuit (7).
5, by claim 1,2 described a kind of method or devices, it is characterized in that with device on the SMBus chip monitoring AGP plate:
Temperature sensor (2) or be semiconductor transducer, or be thermistor; Temperature sensor (2) can be integrated in GPU inside.
6, by the described a kind of device of claim 2, it is characterized in that with device on the SMBus chip monitoring AGP plate:
This device is on the AGP plate, and the serial clock SMBCLK line of SMBus, serial data SMBDATA line are drawn from the AGP slot.
7, by claim 1,2 described a kind of method or devices, it is characterized in that with device on the SMBus chip monitoring AGP plate:
The chip that uses on SMBus can be a kind of I2C (I2C) bus chip that can be compatible with SMBus (8).
8, by claim 1,2 described a kind of method or devices, it is characterized in that with device on the SMBus chip monitoring AGP plate:
GPU uses on the AGP plate+and 12V is as the adjustable working power of fan (4), with monitoring chip (1) output PWM regulation voltage.
9, by claim 1,2 described a kind of method or devices, it is characterized in that with device on the SMBus chip monitoring AGP plate:
Can be when adopting the mode of temperature difference heat radiation without fan, only with voltage and temperature monitoring for GPU.
10, by claim 1,2 described a kind of method or devices with device on the SMBus chip monitoring computer AGP plate,
It is characterized in that: the SMBus that on the AGP plate, uses (8) chip, as a kind of slave unit on SMBus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200410061376XA CN1624662A (en) | 2004-12-17 | 2004-12-17 | Method of monitoring device on AGP plate and its device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200410061376XA CN1624662A (en) | 2004-12-17 | 2004-12-17 | Method of monitoring device on AGP plate and its device |
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| Publication Number | Publication Date |
|---|---|
| CN1624662A true CN1624662A (en) | 2005-06-08 |
Family
ID=34764501
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200410061376XA Pending CN1624662A (en) | 2004-12-17 | 2004-12-17 | Method of monitoring device on AGP plate and its device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100397295C (en) * | 2005-07-11 | 2008-06-25 | 佛山市顺德区顺达电脑厂有限公司 | Method and circuit for controlling radiator |
| CN104391240A (en) * | 2014-11-19 | 2015-03-04 | 北京京东尚科信息技术有限公司 | Circuit board card temperature tolerance analysis method |
| CN112052143A (en) * | 2020-09-11 | 2020-12-08 | 恒为科技（上海）股份有限公司 | Graphic processor GPU management method and system |
-
2004
- 2004-12-17 CN CNA200410061376XA patent/CN1624662A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100397295C (en) * | 2005-07-11 | 2008-06-25 | 佛山市顺德区顺达电脑厂有限公司 | Method and circuit for controlling radiator |
| CN104391240A (en) * | 2014-11-19 | 2015-03-04 | 北京京东尚科信息技术有限公司 | Circuit board card temperature tolerance analysis method |
| CN104391240B (en) * | 2014-11-19 | 2017-05-17 | 北京京东尚科信息技术有限公司 | Circuit board card temperature tolerance analysis method |
| CN112052143A (en) * | 2020-09-11 | 2020-12-08 | 恒为科技（上海）股份有限公司 | Graphic processor GPU management method and system |
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