CN104330606A - Jig for measuring voltage and current of power supply and measuring method thereof - Google Patents
Jig for measuring voltage and current of power supply and measuring method thereof Download PDFInfo
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- CN104330606A CN104330606A CN201310307761.7A CN201310307761A CN104330606A CN 104330606 A CN104330606 A CN 104330606A CN 201310307761 A CN201310307761 A CN 201310307761A CN 104330606 A CN104330606 A CN 104330606A
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Abstract
The invention relates to a jig for measuring voltage and current of a power supply and a measuring method thereof. The jig comprises a main plate voltage input slot which is connected with a main plate power supply; a main plate voltage output slot which is connected with a main plate; a main plate voltage and current measurement circuit which is coupled with the main plate voltage input slot and the main plate voltage output slot and is for measuring the voltage and current that the main plate power supply provides to the main plate; an assembly voltage input slot which is connected with an assembly supply power; an assembly voltage output slot which is connected with a computer system assembly; an assembly voltage and current measurement circuit which is coupled with the assembly voltage input slot and the assembly voltage output slot and is for measuring the voltage and current that the assembly supply power provides to the computer system assembly; and a microcontroller which is for controlling the measurement of the voltage and the current and receiving and outputting the measurement results.
Description
[technical field]
The present invention is about a kind of tool and the method for measurement thereof that measure voltage and electric current, and particularly one is applied to personal computer system, and can determine the voltage of measurement power supply of power supply unit specification and the tool of electric current and method for measurement thereof according to this.
[background technology]
Personal computer (personal computer, PC) has become some indispensable in modern's life.Ordinary consumer buys personal computer, and can buy the PC device of complete machine formula to brand dealer, brand dealer also provides after sale service; In addition, also the consumer of high-order user demand in some is had, or in order to the consideration of usefulness, or in order to save buying cost, and tendency is in the mode of assembling voluntarily, after the building block buying computing machine respectively and software application copyright, then be assembled into a complete personal computer.Domestic at present also have many net coffee dealers, and in order to save hardware buying cost, and the mode of tending to assemble voluntarily buys computing machine.
But when consumer is when determining to assemble personal computer voluntarily, must determine whether the specification of each building block can be compatible, to assembling smoothly.Wherein the output power specification of power supply unit (power supply), is also the signals after a choice between usefulness and price.Power supply unit in personal computer is used to provide supply-voltage source, such as, to mainboard in personal computer and other building blocks, Winchester disk drive, CD-ROM drive, display adapter etc.If the output power specification of power supply unit is not enough, will easily cause the problem of power down, that is the output voltage of power supply unit when dynamically using easily lower than load voltage value, and cause system unstable, when the damage of machine or even building block.
But the output power specification of power supply unit is higher, its price is also just expensive, and such as output power specification is the power supply unit of 350 watts (Watt) and 500 watts on the market at present, and its price differential is greater than hundreds of unit; And compare toward upper level, the power supply unit of 500 watts and 750 watts, its price differential even reaches 1,000 yuan.With such market difference, for need to purchase some personal computer and for the very responsive net coffee dealer of buying price, how under the condition precedent as far as possible brought down prices, decide the output power specification of just enough power supply units, to buy applicable power supply unit assembly, be that an important business is considered.But at present not a more efficient and practice easily, obtains the answer of this problem.
Generally speaking, consumer, when buying power supply unit, all tends to the practice comparatively guarded, that is purchases power supply unit with a higher standard, has problems in use to avoid personal computer system.But but so cause the unnecessary expenditure of acquisition cost.
[summary of the invention]
In view of above problem, the invention provides and a kind ofly measure the voltage of power supply and the tool of electric current and method for measurement thereof, particularly one is applied to personal computer system, and can determine the voltage of measurement power supply of power supply unit specification and the tool of electric current and method for measurement thereof according to this.
The present invention proposes a kind ofly to measure the voltage of power supply and the tool of electric current, is be applied to personal computer system.Personal computer system comprises mainboard supply power supply and assembly supply power supply, in order to provide mainboard voltage and component voltage respectively, to drive mainboard and computer system component respectively.The measurement voltage of power supply and the tool of electric current comprise mainboard voltage input slot, mainboard voltage exports slot, mainboard voltage and current measurement circuit, component voltage input slot, component voltage export slot, component voltage and current measurement circuit and microcontroller.
Mainboard voltage input slot connects mainboard supply power supply, and receives mainboard voltage.Mainboard voltage exports slot and connects mainboard, and exports the power supply needed for mainboard.Mainboard voltage and current measurement circuit input slot and mainboard voltage respectively and export slot and couple mutually with mainboard voltage, and measure voltage and the electric current that mainboard supply power supply is supplied to mainboard.Component voltage input slot coupling assembling supply power supply, and receiving unit voltage.Component voltage exports slot and connects computer system component, and exports the power supply needed for computer system component.Component voltage and current measurement circuit input slot and component voltage respectively and export slot and couple mutually with component voltage, and measure voltage and the electric current that assembly supply power supply is supplied to computer system component.Microcontroller in order to control mainboard voltage and current measurement circuit and component voltage and current measurement circuit, and receives and exports voltage and the current measurement result of mainboard voltage and current measurement circuit and component voltage and current measurement circuit
The present invention proposes again a kind of voltage of power supply and the method for measurement of electric current, is be applied to a personal computer system.Personal computer system comprises multiple mainboard supply power supply and multiple assembly supply power supply, in order to provide multiple mainboard voltage and multiple component voltage respectively, to drive a mainboard and multiple computer system component respectively.The voltage of power supply and the method for measurement of electric current comprise the following steps:
First, whether the value detecting multiple mainboard voltage is all normal.Then, order the multiple mainboard voltage of a Microprocessor S3C44B0X and current measurement circuit to measure respectively voltage and electric current that described multiple mainboard supply power supply is supplied to described mainboard, and command processor controls multiple component voltage and current measurement circuit measures voltage and the electric current that multiple assembly supply-voltage source is supplied to multiple computer system component respectively.Finally, command processor receives and exports voltage and the current measurement result of multiple mainboard voltage and current measurement circuit and multiple component voltage and current measurement circuit.
The present invention more proposes the voltage of another kind of power supply and the method for measurement of electric current, is applied to a personal computer system.Personal computer system comprises multiple mainboard supply power supply and multiple assembly supply power supply, in order to provide multiple mainboard voltage and multiple component voltage respectively, to drive a mainboard and multiple computer system component respectively.The voltage of power supply and the method for measurement of electric current comprise the following steps:
First, whether the value detecting described multiple mainboard voltage is all normal; Then, command processor controls multiple mainboard voltage and current measurement circuit and multiple component voltage and current measurement circuit, and with multiple resistance of multiple mainboard voltage and current measurement circuit and multiple component voltage and current measurement circuit, the normal multiple mainboard supply-voltage source of sampling voltage is supplied to the electric current that the electric current of mainboard and multiple assembly supply-voltage source are supplied to multiple computer system component respectively; Then, with multiple analog-digital converters of multiple mainboard voltage and current measurement circuit and multiple component voltage and current measurement circuit, measure the voltage at multiple resistance two ends respectively, in order to obtain the current value of equivalence, and convert digital signal to and be sent to described microcontroller; Finally, command processor exports voltage and the current measurement result of multiple mainboard voltage and current measurement circuit and multiple component voltage and current measurement circuit.
Effect of the present invention is, the voltage of measurement power supply disclosed by the present invention and the tool of electric current and method for measurement thereof, power demand and the electric current that intactly can measure mainboard and computer system component in personal computer system use situation, and determine the power supply unit product that is applicable to according to this, and personal computer system can be assembled voluntarily in the mode meeting most economic benefit.
Feature for the present invention, implementation and effect, hereby coordinate and to be graphicly described in detail as follows as most preferred embodiment.
[accompanying drawing explanation]
The circuit diagram of Fig. 1 voltage of measurement power supply of the first embodiment and personal computer system of the tool of electric current and application thereof disclosed by the present invention.
The circuit diagram of Fig. 2 voltage of measurement power supply of the second embodiment and personal computer system of the tool of electric current and application thereof disclosed by the present invention.
The circuit diagram of Fig. 3 voltage of measurement power supply of the 3rd embodiment and personal computer system of the tool of electric current and application thereof disclosed by the present invention.
The circuit diagram of Fig. 4 voltage of measurement power supply of the 4th embodiment and personal computer system of the tool of electric current and application thereof disclosed by the present invention.
Fig. 5 is the voltage of power supply of the 5th embodiment and the flow chart of steps of the method for measurement of electric current disclosed by the present invention.
Fig. 6 is the voltage of power supply of the 6th embodiment and the flow chart of steps of the method for measurement of electric current disclosed by the present invention.
Fig. 7 is the voltage of power supply of the 7th embodiment and the flow chart of steps of the method for measurement of electric current disclosed by the present invention.
Fig. 8 is the voltage of power supply of the 8th embodiment and the flow chart of steps of the method for measurement of electric current disclosed by the present invention.
Primary clustering symbol description:
100,101,200,201 1311 mainboards measuring power supply supply power supplys
The tool 1321 assembly supply power supply of voltage and electric current
111 mainboard voltages input slot 211 ..., 21n mainboard voltage input slot
121 mainboard voltages and current measurement circuit 221 ..., 22n mainboard voltage and the magnitude of current
131 mainboard voltages export slot slowdown monitoring circuit
141 component voltages input slot 231 ..., 23n mainboard voltage export slot
151 component voltages and current measurement circuit 241 ..., 24n component voltage input slot
161 component voltages export slot 251 ..., 25n component voltage and the magnitude of current
170,270 microcontroller slowdown monitoring circuits
181 mainboard voltage pilot lamp 261 ..., 26n component voltage export slot
1000 personal computer systems 281 ..., 28n mainboard voltage pilot lamp
1100,2100 mainboards 2201 ..., 220n computer system component
1201 computer system components 2311 ..., 231n mainboard supply power supply
1300,2300 power supply units 2321 ..., 232n assembly supply power supply
[embodiment]
In the middle of instructions and claims, " coupling " one word be comprise directly any and be indirectly electrically connected means at this.Therefore, if describe a first device in literary composition to be coupled to one second device, then represent described first device and directly can be electrically connected in described second device, or be indirectly electrically connected to described second device by other devices or connection means.
The circuit diagram of Fig. 1 personal computer system 1000 of the voltage of the measurement power supply of the first embodiment and the tool 100 of electric current and application thereof disclosed by the present invention.Personal computer system 1000 comprises mainboard 1100, computer system component 1201 and power supply unit 1300.Power supply unit 1300 comprises mainboard supply power supply 1311 and assembly supply power supply 1321, in order to provide mainboard voltage and component voltage respectively, to drive mainboard 1100 and computer system component 1201 respectively.The measurement voltage of power supply and the tool 100 of electric current comprise mainboard voltage input slot 111, mainboard voltage exports slot 131, mainboard voltage and current measurement circuit 121, component voltage input slot 141, component voltage export slot 16 1, component voltage and current measurement circuit 151 and microcontroller 170.
Mainboard voltage input slot 111 connects mainboard supply power supply 1311, and receives mainboard voltage.Mainboard voltage exports slot 131 and connects mainboard, and exports the power supply needed for mainboard 1100.Mainboard voltage and current measurement circuit 121 input slot 111 and mainboard voltage respectively and export slot 131 and couple mutually with mainboard voltage, mainboard voltage and current measurement circuit 121 measure voltage and the electric current that mainboard supply power supply 1311 is supplied to mainboard 1100.Component voltage input slot 141 coupling assembling supply power supply 1321 also receiving unit voltage.Component voltage exports slot 16 1 and connects computer system component 1201 and export the power supply needed for computer system component 1201.Component voltage and current measurement circuit 151 input slot 141 and component voltage respectively and export slot 16 1 and couple mutually with component voltage, component voltage and current measurement circuit 151 measure voltage and the electric current that assembly supply power supply 1321 is supplied to computer system component 1201.Microcontroller 170 is in order to control mainboard voltage and current measurement circuit 121 and component voltage and current measurement circuit 151, and microcontroller 170 receives and export voltage and the current measurement result of mainboard voltage and current measurement circuit 121 and component voltage and current measurement circuit 151.
Further illustrating, the mainboard voltage that mainboard supply power supply 1311 provides, is export slot 131 by mainboard voltage input slot 111, mainboard voltage and current measurement circuit 121 and mainboard voltage to export to mainboard 1100 again.The component voltage that assembly supply power supply 1321 provides is then export slot 16 1 by component voltage input slot 141, component voltage and current measurement circuit 151 and component voltage to export to computer system component 1201 again.Wherein mainboard voltage input slot 111, mainboard voltage export slot 131, component voltage input slot 141 and component voltage and export the slot that slot 16 1 is the entity size for meeting power supply unit joint standard, for the use that standard compliant connecting line plugs.Such as current popularized, the ATX(Advanced Technology eXtended formulated by Intel (Intel)) in host version specification, namely the entity structure of power supply unit joint is defined, such as early stage ATX(20 adapter, for Pentium III and early stage Athlon XP), WTX(24 adapter, for Pentium II, Pentium III, Xeon and Athlon MP), AMD GES(24 pin master connects and 8 pin auxiliary joints, dual processor platform for part Athlon), EPS12V(24 pin major joint, 4 pins the 3rd joint of 8 pin auxiliary joints and apolegamy, for Xeon and Opteron), and early ATX12V(20 pin major joint, 4 pin auxiliary joints and 8 pins the 3rd joint, for Pentium 4 and Athlon XP and Athlon 64 compared with the later stage), ATX12V2.0(24 pin major joint and 4 pin auxiliary joints, for Pentium 4, Core 2 Duo and possess the Athlon64 of PCI Express), ATX12V2.2(mono-piece of 20/24 adapter and one piece of ATX12V 4 adapter, most power supply units also provides one group of 4 pin to add 4 pins, or 8 pins turn the auxiliary of 4 pins and connect, as second EPS12V joint).Other also have supply SATA(serial advanced technology attachment) device, joint of the SATA power connection of such as SATA hard disc machine, the Molex joint supplying such as CD driver device and early supply floppy disk (floppy disk drive) etc.
Mainboard voltage and current measurement circuit 121 and component voltage and 151, current measurement circuit accept the control of microprocessor 170, in order to respectively dynamically and measure the output voltage of mainboard supply-voltage source 1311 and assembly supply power supply 1321 and the signal of electric current or its output current of equivalence in real time, and result is back to microcontroller 170 and processes.Such as mainboard voltage and current measurement circuit 121 can comprise resistance (not showing in Fig. 1) and analog-digital converter (not showing in Fig. 1) further, wherein resistance and mainboard voltage input slot 111 and mainboard voltage and export slot 131 and couple mutually, and analog-digital converter is the voltage measuring resistance two ends, in order to the current value of the equivalence that converts, and be convertible into digital forms and process for microcontroller.Such as component voltage and current measurement circuit 151 can comprise resistance (not showing in Fig. 1) and analog-digital converter (not showing in Fig. 1) further again, wherein resistance and component voltage input slot 141 and component voltage and export slot 16 1 and couple mutually, and analog-digital converter is the voltage measuring resistance two ends, in order to the current value of the equivalence that converts, and be convertible into digital forms and process for microcontroller.
Microcontroller 170 is in order to determine and to control the mode that mainboard voltage and current measurement circuit 121 and component voltage and current measurement circuit 151 carry out measuring voltage and electric current, such as measure the opportunity of beginning, and measure with periodicity or acyclic mode.Microcontroller 170 and receive the voltage of mainboard voltage and current measurement circuit 121 and component voltage and current measurement circuit 151 and current measurement result and to go forward side by side row relax, such as voltage and current measurement result are stored to the storage element being positioned at microprocessor internal or outside, or the measurement equipment exporting other in real time to is to analyze, such as data are exported to notebook computer as measurement equipment control end to carry out recording and analyzing by universal serial bus (universal serial bus, USB).In addition, the integrated circuit of many microcontrollers also incorporates the circuit of analog-digital converter in same chip on the market at present, therefore can carry out the function of mainboard voltage and the Analog-digital Converter included by current measurement circuit 121 in the present embodiment, now the voltage signal at resistance two ends only need be coupled to the integrated circuit of the microcontroller with Analog-digital Converter function by mainboard voltage and current measurement circuit 121.Therefore, in the explanation of the embodiment disclosed by the present invention, microcontroller is as concept and explanation functionally, and being not limited to is an one chip realized with integrated circuit.
The circuit diagram of Fig. 2 personal computer system 1000 of the voltage of the measurement power supply of the second embodiment and the tool 101 of electric current and application thereof disclosed by the present invention.Not existing together of the voltage of measurement power supply that the tool 101 measuring the voltage of power supply and electric current and Fig. 1 disclose and the tool 100 of electric current, is to measure the voltage of power supply and the tool 101 of electric current more includes mainboard voltage pilot lamp 181.Mainboard voltage pilot lamp 181 and microcontroller 170 are electrically connected.When the value that microcontroller 170 measures mainboard voltage is normal, microcontroller 170 sends signal and starts mainboard voltage pilot lamp 181.So, user by directly observing flickering of mainboard voltage pilot lamp 181, and directly judges that whether its power supply of supply-voltage source that current mainboard 1100 receives is normal, carries out debug in order in measurement tasks.
In addition, in the first embodiment and the second embodiment, microcontroller 170 can optionally be powered by power supply unit 1300, or is powered by external supply-voltage source (not shown); And mainboard voltage and current measurement circuit 121 or component voltage and current measurement circuit 151 can also optionally be powered by power supply unit 1300, or powered by external supply-voltage source.Microcontroller 170, mainboard voltage and current measurement circuit 121 and component voltage and current measurement circuit 151 are directly powered by the supply power supply of power supply unit 1300, there is the benefit simplifying integrated testability circuit and equipment needed thereby (namely not needing one group of external supply-voltage source), make the measurement voltage of power supply and the tool 100,101 of electric current have larger portability and convenience in application.But count in the middle of the electricity consumption value of personal computer system 1000 to be measured because the power consumption of microcontroller 170, mainboard voltage and current measurement circuit 121 and component voltage and current measurement circuit 151 may add, thus cause error.Therefore, when the electricity consumption value of personal computer system 1000 to be measured is much larger than the power consumption of microcontroller 170, mainboard voltage and current measurement circuit 121 and component voltage and current measurement circuit 151, microcontroller 170, mainboard voltage and current measurement circuit 121 and component voltage and current measurement circuit 151 are directly powered by the supply power supply of power supply unit 1300, and unlikelyly cause the error that measurement is too large; But when the electricity consumption value of personal computer system 1000 to be measured is close, be even less than microcontroller 170, the power consumption of mainboard voltage and current measurement circuit 121 and component voltage and current measurement circuit 151 time, with external supply-voltage source, microcontroller 170, mainboard voltage and current measurement circuit 121 and component voltage and current measurement circuit 151 are powered, can error be got rid of.It is worth mentioning that, in the present embodiment, microcontroller 170, mainboard voltage and current measurement circuit 121 and component voltage and current measurement circuit 151 can select its power supply mode respectively, such as microcontroller 170 is powered by 12 voltaism potential sources of 24 stitch, and mainboard voltage and current measurement circuit 121 and component voltage and current measurement circuit 151 are then powered with external circuits.Power supply plan mode disclosed is in an embodiment the use in order to illustrate, user according to the demand in practical application, and can have the design on other power supply plans.
Moreover, aforesaid measurement equipment control end also can load the data of the power supply unit of various different size, and measure the voltage of power supply and the tool 100 of electric current in collocation, 101 carry out the detecting of voltage and electric current for personal computer system 1000 to be measured, after noting down and analyzing, with regard to the conclusion whether power supply unit of a certain specification is suitable for, that is whether the required power consumption of personal computer system 1000 exceeds the specification of selected power supply unit, and a conclusion sends warning at this point, such as warn with different cresset, or with screen-picture display conclusion.Among the power supply unit that tester like this can just be suitable for, add the consideration of price and the margin of safety, select the power supply unit product of applicable consumer.
The circuit diagram of Fig. 3 personal computer system 2000 of the voltage of the measurement power supply of the 3rd embodiment and the tool 200 of electric current and application thereof disclosed by the present invention.Personal computer system 2000 comprise multiple mainboard supply power supply 2311 ..., 231n and multiple assembly supply power supply 2321 ..., 232n, in order to provide multiple mainboard voltage and multiple component voltage respectively, with drive respectively mainboard 2100 and multiple computer system component 2201 ..., 220n.Measure the voltage of power supply and the tool 200 of electric current comprise the input of multiple mainboard voltage slot 211 ..., 21n, multiple mainboard voltage export slot 231 ..., 23n, multiple mainboard voltage and current measurement circuit 221 ..., 22n, multiple component voltage input slot 241 ..., 24n, multiple component voltage export slot 261 ..., 26n, multiple component voltage and current measurement circuit 251 ..., 25n and microcontroller 270.
The input of multiple mainboard voltage slot 211 ..., 21n connect respectively multiple mainboard supply power supply 2311 ..., 231n, and receive multiple mainboard voltage.Multiple mainboard voltage export slot 231 ..., 23n connects mainboard 2100, and exports the power supply needed for mainboard.Multiple mainboard voltage and current measurement circuit 221 ..., 22n input with multiple mainboard voltage respectively slot 211 ..., 21n one of them and multiple mainboard voltage export slot 231 ..., 23n one of them couple mutually, and measure respectively multiple mainboard supply power supply 2311 ..., 231n is supplied to voltage and the electric current of mainboard 2100 respectively.The input of multiple component voltage slot 241 ..., 24n respectively be connected multiple assembly supply-voltage source 2321 ..., 232n phase couples, and receives multiple component voltage.Multiple component voltage export slot 261 ..., 26n in order to respectively with multiple computer system component 2201 ..., 220n phase couples, and export multiple computer system component 2201 ..., power supply needed for 220n.Multiple component voltage and current measurement circuit 251 ..., 25n input with multiple component voltage respectively slot 241 ..., 24n one of them and multiple component voltage export slot 261 ..., 26n one of them couple mutually, and measure respectively multiple assembly supply-voltage source 2321 ..., 232n is supplied to voltage and the electric current of corresponding computer system component respectively.Microcontroller 270 in order to control multiple mainboard voltage and current measurement circuit 221 ..., 22n and multiple component voltage and current measurement circuit 251 ..., 25n, and microcontroller 270 receive and export multiple mainboard voltage and current measurement circuit 221 ..., 22n and multiple component voltage and current measurement circuit 251 ..., the voltage of 25n and current measurement result.
Further illustrate, mainboard supply power supply 2311 ..., the mainboard voltage that provides of 231n, be respectively by mainboard voltage input slot 211 ..., 21n, mainboard voltage and current measurement circuit 221 ..., 22n and mainboard voltage export slot 231 ..., 23n exports to mainboard 2100 again.Assembly supply power supply 2321 ..., the component voltage that provides of 232n, be then respectively by component voltage input slot 241 ..., 24n, component voltage and current measurement circuit 251 ..., 25n and component voltage export slot 261 ..., 26n export to respectively again computer system component 2201 ..., 220n.Wherein mainboard voltage input slot 211 ..., 21n, mainboard voltage export slot 231 ..., 23n, component voltage input slot 241 ..., 24n and component voltage export slot 261 ..., 26n is the slot of the entity size for meeting power supply unit joint standard, for the use that standard compliant connecting line plugs, such as, ATX standard described in the explanation of Fig. 1.The different types of slot generally used at present can be integrated in identical platform by the tool 200 measuring source current, to facilitate the different types of personal computer system 1000 of test, therefore has very high compatibility and convenience.
Mainboard voltage and current measurement circuit 221 ..., 22n, component voltage and current measurement circuit 251 ..., the function of 25n and microprocessor 270, circuit composition and mode of operation, can with reference to the related description of mainboard voltage corresponding in figure 1 and current measurement circuit 121, component voltage and current measurement circuit 151 and microprocessor 170.In addition, when mainboard voltage and current measurement circuit 221, 22n and component voltage and current measurement circuit 251, when the number of 25n is more, such as inter-integrated circuit (inter-integrated circuit can be utilized, or serial circumference interface (serial peripheral interface I2C), the communication bus agreement such as SPI), control port corresponding in each electronic circuit and data input/output port are connected, and by after the addressing setting of microprocessor 270, determine to carry out at present controlling or the circuit unit of data I/O is whichever, the circuit Winding Design of tool so can be made more to simplify, cost and the size of tool can be saved.This knows known by the knowledgeable for this area has usually, and after understanding the spirit disclosed by the present invention, can implementer according to this, does not separately repeat at this.
The circuit diagram of Fig. 4 personal computer system 2000 of the voltage of the measurement power supply of the 4th embodiment and the tool 201 of electric current and application thereof disclosed by the present invention.Not existing together of the voltage of measurement power supply that the tool 201 measuring the voltage of power supply and electric current and Fig. 3 disclose and the tool 200 of electric current, be to measure the voltage of power supply and the tool 201 of electric current more include mainboard voltage pilot lamp 281 ..., 28n.Mainboard voltage pilot lamp 281 ..., 28n and microcontroller 270 be electrically connected.When the value that microcontroller 270 measures one of multiple mainboard voltage is normal, microcontroller 270 sends signal and starts corresponding mainboard voltage pilot lamp, that is mainboard voltage pilot lamp 281 ..., 28n one of them.So, user by directly observe mainboard voltage pilot lamp 281 ..., the flickering of 28n, and directly judge that whether its power supply of supply-voltage source that current mainboard 1100 receives normal, carry out debug in order in measurement tasks.
In addition, in the 3rd embodiment and the 4th embodiment, microcontroller 270 can optionally be powered by power supply unit 2300, or is powered by external supply-voltage source (not shown); And mainboard voltage and current measurement circuit 221 ..., 22n or component voltage and current measurement circuit 251 ..., 25n optionally can power by power supply unit 1300, or be powered by external supply-voltage source.Choice in its application and other changes in planning and design, can with reference to related description mentioned in the first embodiment and the second embodiment.
Moreover, when the measurement voltage of power supply and the tool 200 of electric current, when 201 cooperation one measurement equipment control ends measure, measurement equipment control end also can load the data of the power supply unit of various different size, and measure the voltage of power supply and the tool 200 of electric current in collocation, 201 carry out the detecting of voltage and electric current for personal computer system 2000 to be measured, after noting down and analyzing, with regard to the conclusion whether power supply unit of a certain specification is suitable for, that is whether the required power consumption of people's computer system 2000 exceeds the specification of this power supply unit, and a conclusion sends warning at this point, such as warn with different cresset, or with screen-picture display conclusion.Among the power supply unit that tester like this can just be suitable for, add the consideration of price and the margin of safety, select the power supply unit product of applicable consumer.
The present invention more discloses a kind of voltage of power supply and the method for measurement of electric current, be applied to a personal computer system, personal computer system comprises multiple mainboard supply power supply and multiple assembly supply power supply, in order to provide multiple mainboard voltage and multiple component voltage respectively, to drive a mainboard and multiple computer system component respectively.The voltage of power supply and the method for measurement of electric current comprise the following steps:
First, whether the value detecting multiple mainboard voltage is all normal.Then, order the multiple mainboard voltage of a Microprocessor S3C44B0X and current measurement circuit to measure respectively voltage and electric current that described multiple mainboard supply power supply is supplied to described mainboard, and command processor controls multiple component voltage and current measurement circuit measures voltage and the electric current that multiple assembly supply-voltage source is supplied to multiple computer system component respectively.Finally, command processor receives and exports voltage and the current measurement result of multiple mainboard voltage and current measurement circuit and multiple component voltage and current measurement circuit.
In addition, the voltage of the power supply disclosed by the present invention and the method for measurement of electric current more may further include the following step, that is initially determining one of them or an external supply-voltage source with multiple mainboard supply power supply, to the step that a tool measuring source current is powered.
Fig. 5 is the voltage of power supply of the 5th embodiment and the flow chart of steps of the method for measurement of electric current disclosed by the present invention, comprises the following explanation of step 310 to step 340:
As indicated in step 310, whether the value detecting multiple mainboard voltage is all normal.As voltage is normal, then to step 320; As voltage is abnormal, then to step 340.
As shown at step 320, command processor controls multiple mainboard voltage and current measurement circuit measures voltage and the electric current that multiple mainboard supply power supply is supplied to mainboard respectively, and command processor controls multiple component voltage and current measurement circuit measures voltage and the electric current that multiple assembly supply power supply is supplied to multiple computer system component respectively.
As shown in step 330, microprocessor receives and exports voltage and the current measurement result of mainboard voltage and current measurement circuit and component voltage and current measurement circuit.
As indicated in step 340, the value showing mainboard voltage is abnormal.The state of such as Microprocessor S3C44B0X mainboard voltage pilot lamp (flicker, glimmer, color change etc.), shows the whether normal of mainboard voltage; Or on the screen being directly shown in a measurement equipment control end.
Fig. 6 is the voltage of power supply of the 6th embodiment and the flow chart of steps of the method for measurement of electric current disclosed by the present invention, comprises the following explanation of step 405 to step 440:
As shown at 405, determine one of them or the external supply-voltage source with multiple mainboard supply power supply, the measurement voltage of power supply and the tool of electric current are powered.
Step 410,420,430 and 440, then can respectively with reference to step 310 in figure 5,320, the explanation of 330 and 340.
Fig. 7 is the voltage of power supply of the 7th embodiment and the flow chart of steps of the method for measurement of electric current disclosed by the present invention, comprises the following explanation of step 505 to step 570:
Step 505,510,520,530 and 540, then can respectively with reference to the step 405 in figure 6, and step 310 in Fig. 5,320, the explanation of 330 and 340.
As shown in step 550, judge voltage and the setting whether up to specification of current measurement result.As setting up to specification, then to step 560; As the setting that falls short of specifications, then to step 570.
As shown in step 560, prompting up to specification is shown.Such as, on the screen being shown in a measurement equipment control end.
As shown in step 570, show the prompting that falls short of specifications.Such as, on the screen being shown in a measurement equipment control end.
Wherein, in the step 320,420 and 520 of the 5th embodiment, the 6th embodiment and the 7th embodiment, command processor controls mainboard voltage and current measurement circuit and component voltage and current measurement circuit, to measure the action of voltage and electric current respectively, can comprise the following steps: further
First, with multiple resistance of multiple mainboard voltage and current measurement circuit and multiple component voltage and current measurement circuit, the electric current of the normal multiple mainboard supply-voltage source of sampling voltage and multiple assembly supply-voltage source respectively.
Then, with multiple analog-digital converters of multiple mainboard voltage and current measurement circuit and multiple component voltage and current measurement circuit, measure the voltage at multiple resistance two ends respectively, in order to obtain the current value of equivalence, and convert digital signal to and be sent to microcontroller.
Fig. 8 is the voltage of power supply of the 8th embodiment and the flow chart of steps of the method for measurement of electric current disclosed by the present invention, is the step of the measured current described in leading portion, is applied in the 5th embodiment.Directly with reference to above-mentioned related description, separately please not repeat at this.
Although embodiments of the invention disclose as mentioned above; so and be not used to limit the present invention; anyly have the knack of relevant art; without departing from the spirit and scope of the present invention; such as work as according to shape, structure, feature and the quantity described in the present patent application scope and can do a little change, therefore scope of patent protection of the present invention must be as the criterion depending on the claim person of defining appended by this instructions.
Claims (10)
1. one kind measures the voltage of power supply and the tool of electric current, be applied to a personal computer system, described personal computer system comprises a mainboard supply power supply and assembly supply power supply, in order to provide a mainboard voltage and a component voltage respectively, to drive a mainboard and a computer system component respectively, it is characterized in that, described tool comprises:
One mainboard voltage input slot, connects described mainboard supply power supply, and receives described mainboard voltage;
One mainboard voltage exports slot, connects described mainboard, and exports the power supply needed for described mainboard;
One mainboard voltage and current measurement circuit, input slot and described mainboard voltage respectively with described mainboard voltage and export slot and couple mutually, described mainboard voltage and current measurement circuit measure voltage and the electric current that described mainboard supply power supply is supplied to described mainboard;
One component voltage input slot, connects described assembly supply power supply, and receives described component voltage;
One component voltage exports slot, connects described computer system component, and exports the power supply needed for described computer system component;
One component voltage and current measurement circuit, input slot and described component voltage respectively to export slot couple mutually with described component voltage, described component voltage and current measurement circuit measure voltage and the electric current that described assembly supply power supply is supplied to described computer system component; And
One microcontroller, in order to control described mainboard voltage and current measurement circuit and described component voltage and current measurement circuit, and described microcontroller receives and exports voltage and the current measurement result of described mainboard voltage and current measurement circuit and described component voltage and current measurement circuit.
2. the voltage of measurement power supply according to claim 1 and the tool of electric current, is characterized in that, wherein said mainboard supply power supply and described assembly supply power supply come from the power supply unit that meets ATX standard.
3. the voltage of measurement power supply according to claim 1 and the tool of electric current, is characterized in that, wherein said mainboard voltage and current measurement circuit comprise further:
One resistance, inputs slot and described mainboard voltage with described mainboard voltage and exports slot and couple mutually; And
One analog-digital converter, measures the voltage difference at described resistance two ends, in order to obtain the current value of equivalence, and converts digital signal to and is sent to described microcontroller.
4. the voltage of measurement power supply according to claim 1 and the tool of electric current, is characterized in that, wherein said component voltage and current measurement circuit comprise further:
One resistance, inputs slot and described component voltage with described component voltage and exports slot and couple mutually; And
One analog-digital converter, measures the voltage difference at described resistance two ends, in order to obtain the current value of equivalence, and converts digital signal to and is sent to described microcontroller.
5. the voltage of measurement power supply according to claim 1 and the tool of electric current, it is characterized in that, wherein more comprise a mainboard voltage pilot lamp, be electrically connected with described microcontroller, when the value that described microcontroller measures described mainboard voltage is normal, described microcontroller sends a signal and starts described mainboard voltage pilot lamp.
6. the voltage of measurement power supply according to claim 1 and the tool of electric current, is characterized in that, wherein said microcontroller optionally supplies power supply, described assembly supply power supply by described mainboard or powered by an external supply-voltage source.
7. the voltage of measurement power supply according to claim 1 and the tool of electric current, it is characterized in that, wherein said mainboard voltage and current measurement circuit or described component voltage and current measurement circuit be optionally supply power supply by described mainboard, described assembly is supplied power supply or is powered by an external supply-voltage source.
8. the voltage of a power supply and the method for measurement of electric current, be applied to a personal computer system, described personal computer system comprises multiple mainboard supply power supply and multiple assembly supply power supply, in order to provide multiple mainboard voltage and multiple component voltage respectively, to drive a mainboard and multiple computer system component respectively, it is characterized in that, the method for measurement of described source current comprises following steps:
Whether the value detecting described multiple mainboard voltage is all normal;
Order the multiple mainboard voltage of a Microprocessor S3C44B0X and current measurement circuit to measure respectively voltage and electric current that described multiple mainboard supply power supply is supplied to described mainboard;
Order the multiple component voltage of described Microprocessor S3C44B0X and current measurement circuit, measure voltage and electric current that described multiple assembly supply power supply is supplied to described multiple computer system component respectively; And
Order described microprocessor to receive and export voltage and the current measurement result of described multiple mainboard voltage and current measurement circuit and described multiple component voltage and current measurement circuit.
9. the voltage of a power supply and the method for measurement of electric current, be applied to a personal computer system, described personal computer system comprises multiple mainboard supply power supply and multiple assembly supply power supply, in order to provide multiple mainboard voltage and multiple component voltage respectively, to drive a mainboard and multiple computer system component respectively, it is characterized in that, the method for measurement of described source current comprises following steps:
Whether the value detecting described multiple mainboard voltage is all normal;
Order the multiple mainboard voltage of a Microprocessor S3C44B0X and current measurement circuit and multiple component voltage and current measurement circuit;
With multiple resistance of described multiple mainboard voltage and current measurement circuit and described multiple component voltage and current measurement circuit, the normal described multiple mainboard supply-voltage source of sampling voltage is supplied to the electric current that the electric current of described mainboard and described multiple assembly supply-voltage source are supplied to described multiple computer system component respectively;
With multiple analog-digital converters of described multiple mainboard voltage and current measurement circuit and described multiple component voltage and current measurement circuit, measure the voltage at described multiple resistance two ends respectively, in order to obtain the current value of equivalence, and convert digital signal to and be sent to described microcontroller; And
Described microprocessor is ordered to export voltage and the current measurement result of described multiple mainboard voltage and current measurement circuit and described multiple component voltage and current measurement circuit.
10. according to the voltage of the power supply described in claim 8 or 9 and the method for measurement of electric current, it is characterized in that, wherein more comprise and determine with one of them of described multiple mainboard supply power supply, described multiple assembly supply power supply or an external supply-voltage source, to the step that a tool measuring source current is powered.
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