CN102004686B - Current measuring device and computer system thereof - Google Patents
Current measuring device and computer system thereof Download PDFInfo
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- CN102004686B CN102004686B CN200910170096.5A CN200910170096A CN102004686B CN 102004686 B CN102004686 B CN 102004686B CN 200910170096 A CN200910170096 A CN 200910170096A CN 102004686 B CN102004686 B CN 102004686B
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Abstract
The invention relates to a current measuring device, used for measuring magnitude of current of a first load unit. The current measuring device comprises a first impedance unit, a first detecting unit and a processing unit. The first impedance unit is provided with a first input terminal and a first output terminal. The first input terminal receives an input voltage. The first output terminal is coupled with the first load unit at a first node. The first detecting unit generates a first detecting signal according to the input voltage and the voltage of the first node. The processing unit is used for processing the first detecting signal, so as to obtain the magnitude of current flowing through the first load unit.
Description
Technical field
The relevant a kind of computer system of the present invention, particularly relevant a kind of computer system of measuring the magnitude of current of a load device.
Background technology
In existing current measurement techniques, usually utilize galvanometer or electric current to collude the magnitude of current that table is measured the load unit of flowing through.When using galvanometer, need galvanometer series load unit.Galvanometer is informed the magnitude of current of the load unit of flowing through according to the own magnitude of current of flowing through.If when using electric current to collude table measurement electric current, need electric current is colluded table around load unit.Electric current colludes table according to the current field of sensing, and releases the magnitude of current of the determinand of flowing through.
Yet, no matter be that profit is that galvanometer or electric current collude table measurement electric current, all need change load unit annexation originally.In the way of known technology, be to pull out first load unit, again load unit is connected with current measuring device (galvanometer or electric current collude table).After measuring, need remove first being connected of load unit and current measuring device, reply again the annexation between load unit and other assembly.Therefore, will cause the current measurement time to increase significantly.
In addition, in the process of pulling out or replying of load unit, probably can be so that load unit and other assembly form unusual annexation, such as abnormal short circuit (short) or open circuit (open).Therefore, the tester needs again spended time, load unit is carried out the program of debug (debug).
Summary of the invention
The invention provides a kind of current measuring device, in order to the flow through magnitude of current of one first load unit of measurement.Current measuring device comprises, one first impedance unit, one first detecting unit and a processing unit.The first impedance unit has a first input end and one first output terminal.First input end receives an input voltage.The first output terminal and the first load unit are coupled in a first node.The first detecting unit produces one first detection signal according to the voltage of input voltage and first node.Processing unit processes the first detection signal is used for learning the magnitude of current of the first load unit of flowing through.
The present invention provides a kind of computer system in addition, comprises one first load device and a current measuring device.The first load device has one first load unit.The current measuring device measurement magnitude of current of this first load unit of flowing through, and comprise one first impedance unit, one first detecting unit and a processing unit.The first impedance unit has a first input end and one first output terminal.First input end receives an input voltage.The first output terminal and the first load unit are coupled in a first node.The first detecting unit produces one first detection signal according to the voltage of input voltage and first node.Processing unit processes the first detection signal is in order to learn the magnitude of current of first load device of flowing through.
For the features and advantages of the present invention can be become apparent, cited below particularlyly go out preferred embodiment, and cooperate appended accompanying drawing, be described in detail below:
Description of drawings
Fig. 1 is the schematic diagram of computer system of the present invention.
Fig. 2 is that one of current measuring device of the present invention may embodiment.
Fig. 3 A is that one of detecting unit may embodiment.
Fig. 3 B is another possibility embodiment of detecting unit.
Fig. 4 is that one for the treatment of apparatus of the present invention may embodiment.
Fig. 5 A and Fig. 5 B are other possibility embodiment of current measuring device of the present invention.
Embodiment
Fig. 1 is the schematic diagram of computer system of the present invention.As shown in the figure, computer system 100 comprises, load device 110, current measuring device 130 and treating apparatus 150.Load device 110 has load unit 111.Current measuring device 130 is used for measuring the magnitude of current of load unit 111 of flowing through, and the result after will measuring is sent to treating apparatus 150.Treating apparatus 150 is carried out a specific action according to the measurement result of current measuring device 130.To describe specific action in detail after a while.
In the present embodiment, current measuring device 130 sees through transmission interface 171, carries out the transmission of measuring-signal with load device 110, and then sees through transmission interface 191, carries out the transmission of measurement result with treating apparatus 150.The present invention does not limit the kind of transmission interface 171 and 191. Transmission interface 171 and 191 can be universal serial bus (Universal SerialBus; USB) interface, inside circuit integrated circuit bus-bar (Inter-Integrated CircuitBus; I2C Bus) interface or other bus interface.In a possibility embodiment, transmission interface 171 and 191 can be different types of transmission interface.
In the present embodiment, load device 110 sees through transmission interface 172,192 and current measuring device 130, carries out signal with treating apparatus 150 and transmits, and the signal that wherein transmits and measuring-signal have nothing to do.In other embodiments, load device 110 can only see through single transmission interface (not seeing through current measuring device 130), directly carries out data transmission with treating apparatus 150.
The present invention does not limit the kind of transmission interface 172 and 192.In a possibility embodiment, transmission interface 172 and 192 is a peripheral unit assembly interconnect (PeripheralComponent Interconnect; PCI) interface, but be not to limit the present invention.In other possibility embodiment, transmission interface 172 and 192 can be identical or different interface.
As shown in the figure, current measuring device 130 is independent of different circuit boards separately from load device 110.In a possibility embodiment, current measuring device 130 can be incorporated among the load device 110, that is current measuring device 130 is arranged on same circuit board with load device 110.In other embodiments, load device 110, current measuring device 130 are arranged on same circuit board with treating apparatus 150.
The present invention does not limit the kind of load device 110.In a possibility embodiment, load device 110 is a display card (Video Graphics Array; Or other peripheral unit VGA).Take display card as example, display card generally has many assemblies, and each assembly all can be used as load unit 111.In the present embodiment, load unit 111 can be painting processor (the Graphic Processing Unit of display card; GPU) or internal memory.Because display card is known very well by this area personage, therefore repeat no more the operating principle of display card.
Treating apparatus 150 is carried out a specific action according to the measurement result of current measuring device 130, such as the flow through magnitude of current of load unit 111 of demonstration, or adjusts operating frequency of load device 110 or load unit 111 etc.The present invention does not limit the kind for the treatment of apparatus 150.In a possibility embodiment, treating apparatus 150 is to be a motherboard (motherboard; MB).In embodiment, treating apparatus 150 is an external instrument.
Suppose, load device 110 is a display card, and treating apparatus 150 is during for a motherboard, just display card and motherboard can see through transmission interface (such as pci interface) 172,192 and current measuring device 130, mutually transmits signal.Therefore, but the just output signal of processes and displays card of motherboard, or provide signal to give display card.
At this moment, if need to measure the magnitude of current of a certain load unit in the display card, then current measuring device 130 sees through transmission interface 171, and measuring-signal is sent to load unit, and according to the passback result of load unit, tries to achieve measurement result.Current measuring device 130 sees through transmission interface 191 again, and measurement result is sent to motherboard.Motherboard just can be carried out a specific action according to current measurement result, as adjusting the operating frequency of load unit, or measurement result is presented on screen.
In the present embodiment, treating apparatus 150 sees through different transmission interfaces (such as USB and PCI), the signal that receives respectively measuring-signal and have nothing to do with current measurement, but be not to limit the present invention.In other embodiments, treating apparatus 150 can see through the single transmission interface, the signal that receives simultaneously measuring-signal and have nothing to do with current measurement.
In addition, as shown in Figure 1, load device 110 receives input voltage V
IN1, current measuring device 130 receives input voltage V-
IN2, and be coupled in a node (not shown) with load unit 111.Input voltage V
IN1With input voltage V-
IN2Can be from identical or different voltage source.In addition, input voltage V
IN1With input voltage V-
IN2Can have identical or different position accurate.Under measurement pattern, load unit 111 stops to receive input voltage V
IN1Not when measurement pattern, load unit 111 is according to input voltage V
IN1And operate.
Fig. 2 is that one of current measuring device 130 of the present invention may embodiment.As shown in the figure, current measuring device 130 receives input voltage V-
IN2, and be coupled in node ND with load unit 111.In the present embodiment, current measuring device 130 has, impedance unit 210, detecting unit 230 and processing unit 250.
One termination of impedance unit 210 is received input voltage V-
IN2, its other end and load unit 110 are coupled in node ND.In the present embodiment, impedance unit 210 is resistor.Detecting unit 230 is according to input voltage V-
IN2With the voltage of node ND, produce detection signal S
DECProcessing unit 250 is according to detection signal S
DEC, learn the magnitude of current of the load unit 111 of flowing through.In the present embodiment, detection signal S
DECIt is a voltage level.
In order to learn the magnitude of current of the load unit 111 of flowing through, processing unit 250 has voltage to the current conversion function.At processing unit 250 with detection signal S
DECAfter converting electric current position standard to by voltage level, by the result after the conversion, just can learn the magnitude of current of the load unit 111 of flowing through.
Fig. 3 A is that one of detecting unit 230 may embodiment.As shown in the figure, detecting unit 230 has differential amplifier (differential amplifier) 310.Differential amplifier 310 is according to input voltage V-
IN2Voltage V with node ND
NDBetween pressure reduction, produce a pressure difference signal.In the present embodiment, the pressure difference signal that produces of differential amplifier 310 is detection signal S
DEC
Because the pressure difference signal that differential amplifier 310 produces is a simulating signal, therefore, in another possibility embodiment, processing unit 250 shown in Figure 2 need have simulation to the translation function of numeral.The pressure difference signal (simulating signal) that produces when differential amplifier 310 is when being transferred into processing unit 250, and processing unit 250 can received pressure difference signal be converted to the electric current position standard of digital format by analog format.In the present embodiment, the electric current position standard that produces of processing unit 250 is the magnitude of current of the load unit 111 of flowing through.
Fig. 3 B is another possibility embodiment of detecting unit 230.Fig. 3 B similar diagram 3A, different places are, the detecting unit 230 of Fig. 3 B has an analog-digital converter (ADC) 330.The pressure difference signal that analog-digital converter 330 conversion differential amplifiers 310 produce, and the result after will changing is sent to processing unit shown in Figure 2 250.
In the present embodiment, the pressure difference signal after analog-digital converter 330 is changed is detection signal S
DECBecause processing unit 250 shown in Figure 2 has the function that voltage turns electric current, therefore when processing unit 250 receives the output signal of analog-digital converter 330, just can produce a corresponding electric current position standard, wherein this electric current position standard is the magnitude of current of the load device 110 of flowing through.
In addition, in Fig. 2, current measuring device 130 has more a switch 270, in order to the voltage V of transmission node ND optionally
NDGive detecting unit 230.Under measurement pattern, therefore actuating switch 270 is can be with the voltage V of node ND
NDBe sent to detecting unit 230.Not when measurement pattern, actuating switch 270.Therefore, the voltage V of node ND
NDCan't be transferred into detecting unit 230.In a possibility embodiment, not when measurement pattern, load unit 111 may be to receive input voltage V-
IN1, and according to input voltage V-
IN1And operate.
Fig. 4 is that one for the treatment of apparatus 150 may embodiment.As shown in the figure, treating apparatus 150 comprises, control module 410, temperature measurement unit 430, storage element 450 and display circuit 470, but be not to limit the present invention.In other embodiments, the part for the treatment of apparatus 150 or all components can be integrated among current measuring device 130 or the load device 110.In addition, the kind according to the specific action for the treatment of apparatus 150 required execution can be incorporated into other assembly among the treating apparatus 150.
Control module 410 is carried out a specific action according to the signal (being the measurement result of current measuring device 130) of transmission interface 191.In the present embodiment, control module 410 performed specific actions are to drive display circuit 470, so that a display panel can show the magnitude of current of the load unit 111 of flowing through.In other embodiments, if need not show the magnitude of current of load unit 111, then can omit display circuit 470.
In another possibility embodiment, control module 410 can see through an inside circuit integrated circuit bus-bar (Inter-Integrated Circuit Bus; I2C Bus) or usb bus, the measurement result of received current measurement mechanism 130.That is to say, transmission interface 191 is to be inside circuit integrated circuit bus-bar (I2C Bus) or usb bus.
When transmission interface 191 is during for inside circuit integrated circuit bus-bar, current measuring device 130 need have an inside circuit integrated circuit (I2C), is used for detection signal S
DECConvert a frequency signal and a data-signal to, the result after then will changing sees through transmission interface 191 and is sent to control module 410.
In another possibility embodiment, control module 410 performed specific actions are the measurement results according to current measuring device 130, adjust the operating frequency of load device 110 or load unit 111.For example, if the magnitude of current of the load unit 111 of flowing through during less than a default value, then control module 410 little by little increases the operating frequency of load unit 111.On the contrary, if the magnitude of current of the load unit 111 of flowing through during greater than this default value, then control module 410 little by little reduces the operating frequency of load unit 111.
In other possibility embodiment, load unit 111 may have one first load and one second load.The first load the second load in parallel, wherein the first load has one first operating frequency, and the second load has one second operating frequency.In this example, control module 410 performed specific actions can be, and adjust at least one of first and second operating frequency.
At first, current measuring device 130 sensing lead unit 111 are in order to obtain one first measurement result.Then, after adjusting at least one of first and second operating frequency, current measuring device 130 is sensing lead unit 111 again, in order to obtain one second measurement result.Control module 410 just can be tried to achieve respectively second magnitude of current of first magnitude of current of first load of flowing through and this second load of flowing through according to first and second measurement result.
For example, the first measurement result CUR_total is shown below:
CUR_total＝I
L1+I
L2…………………………(1)
Wherein, I
L1Be first magnitude of current of first load of flowing through, I
L2Second magnitude of current for first load of flowing through.
Suppose, the first operating frequency of the first load is reduced 20%, and then the second measurement result CUR_total ' is shown below:
CUR_total’＝0.8I
L1+I
L2…………………………(2)
Because first and second measurement result is known, therefore according to formula (1) and (2), just can try to achieve respectively the first magnitude of current I of first load of flowing through
L1And the second magnitude of current I of second load of flowing through
L2
In the present embodiment, only downgrade the first operating frequency of the first load.In other embodiments, can downgrade/increase the first and/or second operating frequency of the first and/or second load.The present invention does not limit the amplitude of adjustment.In a possibility embodiment, the controlled amplitude of the first operating frequency can equal or be not equal to the controlled amplitude of the first operating frequency.For example, the first operating frequency may be downgraded 20%, and the second operating frequency may be increased 10% or by being downgraded 10%, 20% or 30%.
In addition, can utilize the function situation that monitors dog (watch dog) monitoring load unit 111.If load unit 111 then restarts computer system 100 because of the operating frequency after adjusting can't normal operation the time (as working as machine).After restarting, control module 410 can be adjusted the operating frequency of load unit 111 again, or changes other function of test load device 110.In the present embodiment, monitor that the related software system of dog is stored in the storage element 450, but be not to limit the present invention.
In other possibility embodiment, storage element 450 can store the testing software of other test load device 110.Control module 410 loads storage element 450 stored data, test load device 110 or the performance of load unit 111.In a possibility embodiment, the result after the test can be presented among the display panel.In addition, but the also measurement result of stored current measurement mechanism 130 of storage element 450.
In the present embodiment, treating apparatus 150 more comprises temperature measurement unit 430.In a possibility embodiment, temperature measurement unit 430 is to be a thermoelectric diode (thermodiode), in order to the environment temperature of sensing lead device 110, load unit 111 or computer system 100.Temperature results can be presented among the display panel after measuring.Therefore, the user just can learn, related between the magnitude of current of the load unit 111 of flowing through and the temperature.The present invention is the setting position of limit temperature measuring unit 430 not.In other possibility embodiment, temperature measurement unit 430 can be incorporated among load device 110 or the current measuring device 130.
In another possibility embodiment, the storage element 450 in the treating apparatus 150, temperature measurement unit 430 and display circuit 470 and inessential.The specific action performed according to control module 410 optionally designs the assembly in the treating apparatus 150.
In addition, storage element 450, temperature measurement unit 430 and display circuit 470 are not must design within treating apparatus 150.In other embodiments, optionally storage element 450, temperature measurement unit 430 or display circuit 470 are designed among load device 110 or current measuring device 130.
Fig. 5 A is another possibility embodiment of current measuring device of the present invention.In the present embodiment, but the magnitude of current of current measuring device 530 sensing lead unit 111 and 112, and wherein load unit 112 can be the assembly of another load device or another assembly of load device 110.
In the present embodiment, impedance unit 531a and 531b are made of resistance R 1 and R2 respectively.One may embodiment in, the impedance of resistance R 1 be greater than, be less than or equal to the impedance of resistance R 2.Because the operating principle of Fig. 5 A is identical with Fig. 2, therefore do not repeat superfluous.
Under measurement pattern, switch 537a and 537b are sent to detecting unit 533a and 533b with the voltage of node ND 1 and ND2 respectively.Under non-measurement pattern, switch 537a and 537b stop the voltage of transmission node ND1 and ND2.At this moment, load unit 111 and 112 may receive input voltage V
IN1In another possibility embodiment, load unit 111 and 112 receives different input voltages.
Fig. 5 B is another possibility embodiment of current measuring device of the present invention.Fig. 5 B similar diagram 5A, difference exists, and Fig. 5 B has switch unit 539.The control signal S that switch unit 539 produces according to processing unit 535
C1And S
C2, optionally with detection signal S
DEC1And S
DEC2Be sent to processing unit 535.In a possibility embodiment, processing unit 535 can utilize USB or I2C bus, the result after output is processed.
In a possibility embodiment, processing unit 535 is for a microcontroller (micro-controller), has many translation functions.For example, processing unit 535 not only can become analog signal conversion the function of digital signal, has more the function that voltage level is converted to a corresponding electric current position standard.
In another possibility embodiment, processing unit 535 can be painting processor (GPU).Suppose, when load unit 111 was painting processor, then painting processor can be according to detection signal S
DEC1, try to achieve the own magnitude of current of flowing through.In addition, processing unit 535 can utilize universal input and output (General Purpose I/O) end, output control signal S
C1And S
C2In the present embodiment, output control signal S
C1Universal input/output terminal be called the first universal input/output terminal.Output control signal S
C2Universal input/output terminal be called the second universal input/output terminal.
By current measuring device of the present invention, can in the situation that does not change load unit and other assembly annexation originally, measure the magnitude of current of the load unit of flowing through.Therefore, can significantly reduce the debug time.In addition, by the magnitude of current of storage device recorded stream through load unit, and the flow through magnitude of current of load unit of transmission display Display panel, just can make the tester more understand the performance of load unit.
When the control module 410 for the treatment of apparatus 150 loads the stored data of storage element 450, just can utilize the data that load, long-time monitoring flow is through the curent change of load unit.Thereby provide engineering to perform an analysis, and whether the assessment load unit is unusual.If the present invention is applied in factory's end, then can before shipment, first unusual load unit be stopped, improve the yield of shipment.
In addition, can by the stored application program of storage element 450, automatically adjust the operating frequency of load unit.Therefore, load unit just is operable in optimum frequency.If after the adjusting operation frequency, the situation when machine occurs, then can automatically restart computer system.Therefore, the engineering staff does not need the at any time state of supervisory computer system, and then increases work efficiency.
[0061] although the present invention disclose as above with preferred embodiment; so it is not to limit the present invention; have in the technical field under any and usually know the knowledgeable; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention defines and is as the criterion when looking accompanying claim scope.
Claims (52)
1. computer system is characterized in that comprising:
One first load device has one first load unit; And
One current measuring device is used for measuring the magnitude of current of described the first load unit of flowing through, and comprises:
One first impedance unit has a first input end and one first output terminal, and described first input end receives an input voltage, and described the first output terminal and described the first load unit are coupled in a first node;
One first detecting unit according to the voltage of described input voltage and described first node, produces one first detection signal; And
One processing unit is processed described the first detection signal, is used for learning the magnitude of current of described the first load unit of flowing through; And
One treating apparatus according to the magnitude of current of described the first load unit of flowing through, is carried out a specific action;
Wherein, described the first detecting unit also comprises a differential amplifier, and the difference according to the voltage of described input voltage and described first node produce a pressure difference signal, and described pressure difference signal is to be described the first detection signal.
2. according to computer system claimed in claim 1, it is characterized in that under a measurement pattern, described the first detecting unit receives the voltage of described first node, under non-described measurement pattern, described the first detecting unit does not receive the voltage of described first node.
3. according to computer system claimed in claim 2, it is characterized in that more comprising:
One switch, be coupled between described the first load unit and described the first impedance unit, under described measurement pattern, the voltage that transmits described first node gives described the first detecting unit, under non-described measurement pattern, the voltage that stops to transmit described first node gives described the first detecting unit.
4. according to computer system claimed in claim 1, it is characterized in that more comprising a storage element, be used for the magnitude of current of recorded stream through described the first load unit.
5. according to computer system claimed in claim 4, it is characterized in that described storage element more stores a testing software, the performed described specific action of described treating apparatus be for, load the stored described testing software of described storage element, the performance that is used for testing described the first load unit.
6. according to computer system claimed in claim 1, it is characterized in that more comprising a control module, according to the magnitude of current of described the first load unit of flowing through, carry out a specific action.
7. according to computer system claimed in claim 6, it is characterized in that described specific action is with the magnitude of current of described the first load unit of flowing through, and is presented on the display panel.
8. according to computer system claimed in claim 6, it is characterized in that more comprising a temperature measurement unit, described specific action is the measurement result with described current measuring device and described temperature measurement unit, is presented on the display panel.
9. according to computer system claimed in claim 8, it is characterized in that described temperature measurement unit is used for measuring the temperature of described the first load unit.
10. according to computer system claimed in claim 8, it is characterized in that described temperature measurement unit is to be a thermoelectric diode (thermo diode).
11. according to computer system claimed in claim 6, it is characterized in that described specific action is the magnitude of current according to described the first load unit of flowing through, and adjusts the operating frequency of described the first load unit.
12. according to computer system claimed in claim 6, it is characterized in that described the first load unit has one first load and one second load, described the first load described the second load in parallel, described the first load is to be a painting processor, described the second load is to be an internal memory, described painting processor has one first operating frequency, and described internal memory has one second operating frequency.
13. according to the described computer system of claim 12, it is characterized in that described specific action is at least one of described first and second operating frequency of adjustment.
14. according to the described computer system of claim 13, it is characterized in that after adjusting at least one of described first and second operating frequency, described detecting unit is again according to the voltage of described input voltage and described first node, be used for producing one second detection signal, described first and second detection signal of described processing unit processes is tried to achieve one first magnitude of current of described the first load of flowing through and one second magnitude of current of described the second load of flowing through.
15. according to computer system claimed in claim 6, it is characterized in that described control module is to see through a universal serial bus (Universal Serial Bus; USB), receive the measurement result of described current measuring device.
16. according to computer system claimed in claim 6, it is characterized in that described control module is to see through an inside circuit integrated circuit bus-bar (Inter-Integrated CircuitBus; I2C Bus), receive the measurement result of described current measuring device.
17. according to the described computer system of claim 16, it is characterized in that current measuring device more comprises an inside circuit integrated circuit, be used for converting described detection signal to a frequency signal and a data-signal.
18. according to the described computer system of claim 17, it is characterized in that described the first load unit is to be a painting processor (Graphic Processing Unit; GPU).
19. according to the described computer system of claim 18, it is characterized in that described painting processor is to be described processing unit, described painting processor is tried to achieve the own magnitude of current of flowing through according to described the first detection signal.
20. according to computer system claimed in claim 1, it is characterized in that described the first impedance unit is to be a resistance.
21. according to computer system claimed in claim 1, it is characterized in that described the first load device is to be a display card, described the first load unit is to be a painting processor or an internal memory.
22. according to computer system claimed in claim 1, it is characterized in that described the first detecting unit more comprises:
One analog-digital converter is used for changing described pressure difference signal.
23. according to the described computer system of claim 22, the pressure difference signal after it is characterized in that changing is to be described the first detection signal.
24. according to computer system claimed in claim 1, it is characterized in that more comprising one second load device, described the second load device has one second load unit, wherein said current measuring device more comprises:
One second impedance unit has one second input end and one second output terminal, and described the second input end receives described input voltage, and described the second output terminal and described the second load unit are coupled in a Section Point; And
One second detecting unit according to the voltage of described test voltage and this Section Point, produces one second detection signal.
25. according to the described computer system of claim 24, it is characterized in that described processing unit according to described the second detection signal, learns the magnitude of current of described the second load unit of flowing through.
26. according to the described computer system of claim 24, it is characterized in that described the first load unit is to be a painting processor, described the second load unit is to be an internal memory.
27. according to the described computer system of claim 24, it is characterized in that described current measuring device more comprises:
One switches the unit, be used for optionally transmitting described first and second detection signal and give described processing unit, when described processing unit activation one the first control signal, described switch unit is sent to described processing unit with described the first detection signal, when this processing unit activation one second control signal, described switch unit is sent to described processing unit with described the second detection signal.
28. according to the described computer system of claim 27, it is characterized in that described processing unit has one first universal input and output (General Purpose I/O) end and one second universal input and output, the described first universal input/output terminal is used for exporting described the first control signal, and the described second universal input/output terminal is used for exporting described the second control signal.
29. according to computer system claimed in claim 1, it is characterized in that described the first load unit is arranged among the first circuit board, described current measuring device is arranged among the second circuit board, and described first circuit board sees through a peripheral unit assembly interconnect (Peripheral Component Interconnect; PCI) bus is transmitted with described second circuit board.
30. according to computer system claimed in claim 1, it is characterized in that described the first load device and described current measuring device consist of a display card.
The magnitude of current of one first load unit 31. a current measuring device, measurement are flowed through, described current measuring device is characterized in that comprising:
One first impedance unit has a first input end and one first output terminal, and described first input end receives an input voltage, and described the first output terminal and described the first load unit are coupled in a first node;
One first detecting unit according to the voltage of described input voltage and described first node, produces one first detection signal; And
One processing unit is processed described the first detection signal, is used for learning the magnitude of current of described the first load unit of flowing through;
Wherein, described the first detecting unit also comprises a differential amplifier, and the difference according to the voltage of described input voltage and described first node produce a pressure difference signal, and described pressure difference signal is to be described the first detection signal.
32. according to the described current measuring device of claim 31, it is characterized in that under a measurement pattern, the voltage of described first node is sent to described the first detecting unit, and not when described measurement pattern, the voltage of described first node is not sent to described the first detecting unit.
33. according to the described current measuring device of claim 31, it is characterized in that more comprising a switch, be coupled between described the first load unit and described the first impedance unit, under described measurement pattern, the voltage that transmits described first node gives described the first detecting unit, not when described measurement pattern, the voltage that stops to transmit described first node gives described the first detecting unit.
34. according to the described current measuring device of claim 31, it is characterized in that described the first load unit has one first load and one second load, described the first load described the second load in parallel, described the first load is to be a painting processor, described the second load is to be an internal memory, described painting processor has one first operating frequency, and described internal memory has one second operating frequency.
35. according to the described current measuring device of claim 34, it is characterized in that described the first load unit is arranged among one first load device, described the first load device more comprises a control device, be used for result according to described processing unit, adjust at least one of described first and second operating frequency.
36. according to the described current measuring device of claim 34, it is characterized in that more comprising a control device, be used for result according to described processing unit, adjust at least one of described first and second operating frequency.
37. according to the described current measuring device of claim 36, it is characterized in that after adjusting at least one of described first and second operating frequency, described the first detecting unit is again according to the voltage of described input voltage and described first node, produce one second detection signal, described first and second detection signal of described processing unit processes is tried to achieve one first magnitude of current of described the first load of flowing through and one second magnitude of current of described the second load of flowing through.
38. according to the described current measuring device of claim 31, it is characterized in that more comprising:
One storage element stores the result of described processing unit; And
One control module according to the stored data of storage element, is carried out a specific action.
39. according to the described current measuring device of claim 38, it is characterized in that described storage element more stores a testing software, the data that described control device is stored with described storage element, the performance of testing described the first load unit.
40. according to the described current measuring device of claim 39, it is characterized in that more comprising circuit part's integrated circuit, be used for the results conversion after the described processing unit processes is become a frequency signal and a data-signal.
41. according to the described current measuring device of claim 40, it is characterized in that described control module is to see through an integrated circuit bus-bar (Inter-IntegratedCircuit Bus of circuit part; I2C Bus), receive the result of described processing unit.
42. according to the described current measuring device of claim 41, it is characterized in that described the first load unit is to be a painting processor (Graphic Processing Unit; GPU).
43. according to the described current measuring device of claim 42, it is characterized in that described painting processor is to be described processing unit, described painting processor is tried to achieve the own magnitude of current of flowing through according to described the first detection signal.
44. according to the described current measuring device of claim 31, it is characterized in that described the first impedance unit is to be a resistance.
45. according to the described current measuring device of claim 31, it is characterized in that described the first load unit is to be a painting processor or an internal memory.
46. according to the described current measuring device of claim 31, it is characterized in that described the first detecting unit more comprises:
One analog-digital converter is used for changing described pressure difference signal.
47. according to the described current measuring device of claim 46, the pressure difference signal after it is characterized in that changing is to be described the first detection signal.
48. according to the described current measuring device of claim 31, it is characterized in that more comprising:
One second impedance unit has one second input end and one second output terminal, and described the second input end receives described input voltage, and described the second output terminal and one second load unit are coupled in a Section Point; And
One second detecting unit according to the voltage of described input voltage and this Section Point, produces one second detection signal.
49. according to the described current measuring device of claim 48, it is characterized in that described processing unit according to described the second detection signal, learns the magnitude of current of described the second load unit of flowing through.
50. according to the described current measuring device of claim 49, it is characterized in that described the first load unit is to be a painting processor, described the second load unit is to be an internal memory.
51. according to the described current measuring device of claim 49, it is characterized in that more comprising that one switches the unit, be used for optionally transmitting described first and second detecting letter and give described processing unit, when described processing unit activation one the first control signal, described switch unit is sent to described processing unit with described the first detection signal, when described processing unit activation one the second control signal, described switch unit is sent to described processing unit with described the second detection signal.
52. according to the described current measuring device of claim 51, it is characterized in that described processing unit has one first universal input and output (General Purpose I/O) end and one second universal input and output, the described first universal input/output terminal is used for exporting described the first control signal, and the described second universal input/output terminal is used for exporting described the second control signal.
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| TW098118675A TWI408375B (en) | 2009-06-05 | 2009-06-05 | Current measuring device and computer system utilizing the same |
| CN200910170096.5A CN102004686B (en) | 2009-06-05 | 2009-09-03 | Current measuring device and computer system thereof |
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| TW098118675A TWI408375B (en) | 2009-06-05 | 2009-06-05 | Current measuring device and computer system utilizing the same |
| CN200910170096.5A CN102004686B (en) | 2009-06-05 | 2009-09-03 | Current measuring device and computer system thereof |
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| CN102004686B true CN102004686B (en) | 2013-03-27 |
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| CN103837758B (en) * | 2012-11-23 | 2018-01-30 | 技嘉科技股份有限公司 | The Multiple detection system and its multiple detection method of image signal |
| TW201423409A (en) | 2012-12-06 | 2014-06-16 | Hon Hai Prec Ind Co Ltd | Management device for managing multiple control cards and management system and control card using the management device |
| US10379154B2 (en) | 2016-09-16 | 2019-08-13 | Xcerra Corporation | Testing system and method |
| US11126248B2 (en) | 2019-06-25 | 2021-09-21 | Western Digital Technologies, Inc. | Data storage device detecting supply current limit |
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| CN101201388A (en) * | 2006-12-13 | 2008-06-18 | 株式会社瑞萨科技 | Method of on-chip current measurement and semiconductor ic |
| CN101470155A (en) * | 2007-12-27 | 2009-07-01 | 宏达国际电子股份有限公司 | Current measuring apparatus |
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| TWI290217B (en) * | 2005-01-24 | 2007-11-21 | Yan-De Guan | Power and temperature measuring method and device with high-end display card |
| TWI365296B (en) * | 2007-03-12 | 2012-06-01 | Hon Hai Prec Ind Co Ltd | Motherboard test circuit |
| JP5034781B2 (en) * | 2007-08-27 | 2012-09-26 | 富士通株式会社 | High-sensitivity resistance measuring device and monitoring method for solder bump |
| US7719293B2 (en) * | 2007-11-12 | 2010-05-18 | Dell Products L.P. | System and method for current measurement |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101201388A (en) * | 2006-12-13 | 2008-06-18 | 株式会社瑞萨科技 | Method of on-chip current measurement and semiconductor ic |
| CN101470155A (en) * | 2007-12-27 | 2009-07-01 | 宏达国际电子股份有限公司 | Current measuring apparatus |
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| TW201043970A (en) | 2010-12-16 |
| TWI408375B (en) | 2013-09-11 |
| CN102004686A (en) | 2011-04-06 |
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