CN108107264A - The method and apparatus for measuring power consumption - Google Patents

Abstract

The embodiment of the present invention discloses a method for measuring power consumption. The method includes: determining the DC equivalent resistance R ₁ of the wiring of the target to be measured and the DC equivalent resistance R ₂ of the packaging point of the target to be measured; obtaining a power supply output terminal voltage V ₁ and the power input terminal voltage V ₂ of the target to be _measured ; obtain the current I of the wiring of the target to be measured according to the V ₁ , V ₂ , and R ₁ ; _2. R ₁ , R ₂ , and I obtain the actual voltage V ₃ reaching the target to be measured; and obtain the power consumption of the target to be measured according to the V ₃ and the I. The embodiment of the invention also discloses a device for measuring power consumption.

Description

Method and device for measuring power consumption

technical field

The invention relates to the technical field of electronic automatic measurement, in particular to a method and device for measuring power consumption.

Background technique

Power consumption measurement has always been one of the key items in the development of various system boards, terminal boards or chips, and is also one of the essential items; Power consumption requirements are getting higher and higher, and power consumption measurement is becoming more and more important.

For traditional power consumption measurement, there are usually two methods: the first is to use a regulated source to supply power to each power supply of the board or chip, and obtain the current value of the board or chip by reading the current value on the regulated source. The second method is to calculate the power consumption by connecting an ammeter in series with the branch circuit to obtain the current magnitude.

But these two methods generally need to use flying leads to solder the positive and negative poles of the voltage regulator to the board, or remove the devices on the board and connect the ammeter in series; For power consumption measurement, whether it is the method of using a voltage stabilizer or an ammeter, there will be many cumbersome cables to be soldered or devices to be removed, connected to test leads, etc., and usually the flying wires are long, resulting in wires The upper voltage drop is too large, or there are many solder joints, and the contact point impedance is large, resulting in too much voltage loss. Therefore, the stability and accuracy of the measurement cannot be guaranteed.

Contents of the invention

In view of this, the embodiments of the present invention expect to provide a method and device for measuring power consumption, so as to achieve automatic power consumption measurement and improve the stability and accuracy of power consumption measurement.

In order to achieve the above object, technical solution of the present invention is achieved in that way:

The present invention provides a method for measuring power consumption, the method comprising:

Determine the DC equivalent resistance R ₁ of the wiring of the target to be tested and the DC equivalent resistance R ₂ of the packaging point of the target to be measured;

Obtaining the voltage V ₁ at the output terminal of the power supply and the voltage V ₂ at the input terminal of the power supply of the target to be tested;

Obtain the current I of the wiring of the target to be tested according to the V ₁ , V ₂ , and R ₁ ;

Obtain the actual voltage V ₃ reaching the target to be measured according to the V ₁ , V ₂ , R ₁ , R ₂ , and I;

The power consumption of the target under test is obtained according to the _V3 and the I.

In the above scheme, after the power consumption of the target to be measured is obtained according to the V ₃ and the I, the method further includes:

The average power consumption, maximum power consumption, and minimum power consumption of the target to be tested are counted within a preset period.

In the above solution, before the acquisition of the power output voltage _V1 and the power input voltage _V2 of the target to be measured, the method further includes:

Power-on settings are performed on the target under test according to the power-on sequence rules.

In the above solution, after the acquisition of the power output voltage _V1 and the power input voltage _V2 of the target to be tested, the method further includes:

Whether to adjust V ₁ is determined according to a comparison result between V ₂ and the set voltage V ₀ of the target to be measured.

In the above solution, the determination of whether to adjust V ₁ according to the comparison result between V ₂ and the set voltage V ₀ of the target to be measured includes:

judging whether the difference between V ₂ and V ₀ exceeds a preset threshold range, and if the difference exceeds a preset threshold range, adjusting V ₁ until the difference between V ₂ and V ₀ does not exceed the preset threshold range;

If the difference does not exceed the preset threshold range, it is judged whether the V ₂ is equal to the V ₀ , and if the V ₂ is not equal to the V ₀ , then the V ₁ is adjusted until the V ₂ is equal to the V 0 up to V ₀ ;

If the V ₂ is equal to the V ₀ , then the V ₁ is not adjusted.

In the above scheme, the method also includes:

The power consumption of the target under test is saved and presented.

In the above solution, the determination of the DC equivalent resistance R ₁ of the wiring of the target to be measured and the DC equivalent resistance R ₂ of the package point of the target to be measured includes:

The R ₁ is calculated according to the formula R ₁ =ρ ₁ L/(0.03W), where ρ ₁ is the resistivity of the wiring, L is the length of the wiring, and W is the width of the wiring;

The R ₂ is calculated according to the formula R ₂ =ρ ₂ h/πr ² , wherein ρ ₂ is the resistivity of the packaging point, h is the radius of the packaging point, and r is the radius of the packaging point pad;

The obtaining the current I of the wiring of the target under test according to the V ₁ , V ₂ , and R ₁ includes:

The I is calculated according to the formula I=(V ₁ -V ₂ )/R ₁ ;

The obtaining the actual voltage V ₃ reaching the target to be measured according to the V ₁ , V ₂ , R ₁ , R ₂ , and I includes:

The V ₃ is calculated according to the formula V ₃ =(V ₂ −IR ₂ ) by using the theorem that the currents of the series circuit are consistent.

The present invention also provides a device for measuring power consumption, the device comprising:

A determination module, configured to determine the DC equivalent resistance R ₁ of the wiring of the target to be measured and the DC equivalent resistance R ₂ of the packaging point of the target to be measured;

An acquisition module, configured to acquire the power output voltage V ₁ and the power input voltage V ₂ of the target to be measured;

A processing module, configured to obtain _the current I of the wiring _of the target to be tested according to the V ₁ , V ₂ , _and R _{1 ;} The actual voltage V ₃ of the target to be measured; the power consumption of the target to be measured is obtained according to the V ₃ and the I.

In the solution above, the processing module is further configured to count the average power consumption, maximum power consumption, and minimum power consumption of the target to be tested within a preset period.

In the above scheme, the device also includes:

A setting module, configured to perform power-on settings on the target under test according to power-on sequence rules.

In the solution above, the processing module is further configured to determine whether to adjust V ₁ according to a comparison result between V ₂ and the set voltage V ₀ of the target to be measured.

In the above solution, the processing module is specifically used to judge whether the difference between _V2 and _V0 exceeds a preset threshold range, and if the difference exceeds a preset threshold range, adjust _V1 until until the difference between the V ₂ and the V ₀ does not exceed the preset threshold range;

If the difference does not exceed the preset threshold range, it is judged whether the V ₂ is equal to the V ₀ , and if the V ₂ is not equal to the V ₀ , then the V ₁ is adjusted until the V ₂ is equal to the V 0 up to V ₀ ;

If the V ₂ is equal to the V ₀ , then the V ₁ is not adjusted.

In the above scheme, the device also includes:

The output module is used to save and present the power consumption of the target to be measured.

In the above solution, the determination module is specifically used to calculate and obtain the R ₁ according to the formula R ₁ =ρ ₁ L/(0.03W), wherein, ρ ₁ is the resistivity of the wiring, L is the length of the wiring, and W is the trace width; the R ₂ is calculated according to the formula R ₂ =ρ ₂ h/πr ² , where ρ ₂ is the resistivity of the package point, h is the radius of the package point, and r is the radius of the package point pad;

The processing module is specifically used to calculate and obtain the I according to the formula I=(V ₁ -V ₂ )/R ₁ ; use the theorem that the current of a series circuit is consistent, and calculate and obtain according to the formula V ₃ =(V ₂ -IR ₂ ) The V ₃ .

In the method and device for measuring power consumption provided by the embodiments of the present invention, by determining the DC equivalent resistance R ₁ of the wiring of the target to be measured and the DC equivalent resistance R ₂ of the packaging point of the target to be measured; obtaining the output voltage V of the power supply ₁ and the voltage V ₂ of the power input terminal of the target to be tested; according to the V ₁ , V ₂ , R ₁ to obtain the current I of the wiring of the target to be tested; according to the V ₁ , V ₂ , R ₁ , R ₂ , I obtain the actual voltage V ₃ reaching the target to be measured; obtain the power consumption of the target to be measured according to the V ₃ and the I; fully consider the voltage loss in the working process of the target to be measured, and There is no need for staff to read the measurement data, therefore, the automatic measurement of power consumption is achieved and the stability and accuracy of the measurement of power consumption are improved.

Description of drawings

FIG. 1 is a flow chart of Embodiment 1 of the method for measuring power consumption of the present invention;

Fig. 2 is a flow chart of Embodiment 2 of the method for measuring power consumption of the present invention;

Fig. 3 is a display diagram of the real-time value of the measurement result of Embodiment 2 of the method for measuring power consumption of the present invention;

FIG. 4 is a statistical display diagram of the measurement results of Embodiment 2 of the method for measuring power consumption of the present invention;

FIG. 5 is a schematic structural diagram of an embodiment of a device for measuring power consumption according to the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

Fig. 1 is a flow chart of Embodiment 1 of the method for measuring power consumption of the present invention. As shown in Fig. 1 , the method for measuring power consumption provided by the embodiment of the present invention may include the following steps:

Step 101. Determine the DC equivalent resistance R ₁ of the wiring of the target to be tested and the DC equivalent resistance R ₂ of the packaging point of the target to be tested.

The device for measuring power consumption determines the DC equivalent resistance R ₁ of the target to be measured and the DC equivalent resistance R ₂ of the packaging point of the target to be measured; for example, for the DC equivalent resistance R ₁ of the target to be measured _, the material, resistivity, width and length of the power trace on the target to be measured can be obtained by extracting the light drawing source file of the target to be measured in advance, and then the trace of the target to be measured can be calculated according to the extracted relevant information DC equivalent resistance R ₁ ; for the package point DC equivalent resistance R ₂ of the target to be measured, the material, resistivity, ball diameter and Based on relevant information such as the diameter of the pad, the DC equivalent resistance R ₂ of the packaging point of the target to be tested can be calculated based on the extracted relevant information.

Wherein, the target to be tested includes various single boards or various chips.

Step 102. Obtain the voltage V ₁ of the output terminal of the power supply and the voltage V ₂ of the input terminal of the power supply of the target to be tested.

The device for measuring power consumption obtains the power output terminal voltage V ₁ from a certain power supply output terminal under test, and obtains the power supply input terminal voltage V ₂ of the target to be tested from the power supply pin input terminal of the chip under test.

Step 103, obtain the current I of the wiring of the target to be tested according to the V ₁ , V ₂ , and R ₁ .

According to V ₁ , V ₂ obtained in step 102 and R ₁ obtained in step 101 , the relationship between voltage, resistance and current is used to calculate the current I of the wiring of the target to be tested.

Step 104 , according to the V ₁ , V ₂ , R ₁ , R ₂ , and I, the actual voltage V ₃ reaching the target to be measured is obtained.

According to the V ₁ , V ₂ , R ₁ , R ₂ , and I calculated by the above steps, the actual voltage V ₃ reaching the target to be measured is calculated by using the theorem that the current of the series circuit is consistent.

Step 105. Obtain the power consumption of the target under test according to the V ₃ and the I.

Calculate the power consumption of the target to be tested according to the relationship among power consumption, voltage and current.

The method for measuring power consumption provided by the embodiments of the present invention, by determining the DC equivalent resistance R ₁ of the wiring of the target to be measured and the DC equivalent resistance R ₂ of the packaging point of the target to be measured; obtaining the output terminal voltage V ₁ and The voltage V ₂ of the power input terminal of the target under test; the current I of the wiring of the target under test is obtained according to the V ₁ , V ₂ , R ₁ ; according to the V ₁ , V ₂ , R ₁ , R _2. I obtains the actual voltage V ₃ reaching the target to be measured; obtains the power consumption of the target to be measured according to the V ₃ and the I; fully considers the voltage loss in the working process of the target to be measured, and does not need to work Personnel read the measurement data, thus achieving automatic measurement of power consumption and improving the stability and accuracy of measurement of power consumption.

In order to better reflect the purpose of the present invention, further examples are given on the basis of the above-mentioned embodiments.

Fig. 2 is a flow chart of Embodiment 2 of the method for measuring power consumption of the present invention. As shown in Fig. 2, the method for measuring power consumption provided by the embodiment of the present invention may include the following steps:

Step 201. Determine the DC equivalent resistance R ₁ of the wiring of the target to be tested and the DC equivalent resistance R ₂ of the packaging point of the target to be tested.

Specifically, the calculation module of the device for measuring power consumption calculates R ₁ according to the formula R ₁ =ρ ₁ L/(0.03W), where ρ ₁ is the resistivity of the wiring, L is the length of the wiring, and W is the wiring Width, R ₂ is calculated according to the formula R ₂ =ρ ₂ h/πr ² , where ρ ₂ is the resistivity of the package point, h is the radius of the package point, and r is the radius of the package point pad.

For example, usually the trace copper of the board to be tested is 1oz, and the corresponding thickness converted into international units is 0.035mm, and the thickness after processing is only 0.03mm; if the trace width is W, then the DC etc. Effective resistance R ₁ =ρ ₁ L/S=R ₁ =ρ ₁ L/(0.03W), ρ ₁ is the resistivity of copper, ρ ₁ =0.0175Ωmm ² /m, L is the length of the trace, W is the trace Width; the width and length of the power supply trace on the board to be tested can be obtained by extracting the light drawing source file. The coreVDD trace width of a certain board is 100mil, and the effective length of the trace is 5000mil. If it is converted into the international length unit, then W = 2.54mm, L = 127mm, so the actual coreVDD routing is calculated as the DC equivalent resistance of 0.0175×0.127/(0.03×2.54)=0.0292Ω=29mΩ.

If the entire power trace consists of many segments, it should be calculated in segments according to the size of each segment of the gerber file, and finally the data of each segment is accumulated to obtain the actual DC equivalent resistance value of the power trace.

At present, most chips such as multimedia processing chips, baseband (Baseband Processor, BP) chips, and application (Application Processor, AP) chips are packaged in Ball Grid Array (BGA). The factory understands the composition of the solder balls on the board to be tested; taking the solder balls of Sn63Pb37 composition as an example, the resistivity of tin is 0.113Ωmm ² /m, and the resistivity of lead is 0.2068Ωmm ² /m, and the solder balls of Sn63Pb37 composition can be obtained The actual resistivity is ρ ₂ =0.1477Ωmm ² /m; taking the ball diameter of the packaging point as 0.4mm as an example, the diameter of the actual packaging point pad is 0.3mm, then the DC equivalent resistance of the packaging point is R ₂ =ρ ₂ h/πr ² =0.1477×0.4/3.14×0.15 ² =0.0836Ω=84mΩ.

Step 202, perform power-on settings on the target under test according to the power-on sequence rules.

The power-on module of the device for measuring power consumption sets the delay between power-on of each voltage set by the staff (t ₁ /t ₂ /.../t _n ), the measured voltage value V ₀ , and the equivalent resistance value R ₁ The scripts of \R ₂ and other parameters are downloaded to the processing module, and the power-on sequence and voltage value setting of different voltages are realized according to the predetermined values of the test plan.

Since the single board or chip has a certain power-on sequence requirement, the existing technology generally controls the voltage regulator manually by the measurement personnel. If there are many types of power sources to be tested, the power-on sequence cannot be well controlled. If the requirements are not met, there may be The system does not work or the work is unstable, and there is a certain risk; and the embodiment of the present invention controls the power-on setting of the single board or chip to be tested by enabling the power-on module, and controls the power-on sequence well, which can further ensure Test stability.

Step 203 , acquiring the voltage V ₁ of the output terminal of the power supply and the voltage V ₂ of the input terminal of the power supply of the target to be tested.

The voltage sampling module of the device for measuring power consumption obtains the voltage V ₁ of the output terminal of the power supply and the voltage V ₂ of the input terminal of the power supply of the target to be measured; for example, the voltage sampling module includes two precision probes whose positions can be adjusted and a high gain The low-noise amplifier and analog-to-digital converter can accurately sample the voltage value of the measured circuit.

Further, a plurality of voltage sampling modules can be arranged in the device for measuring power consumption, so that different targets to be measured can be measured at the same time.

Step 204. Determine whether to adjust V ₁ according to the comparison result between V ₂ and the set voltage V ₀ of the target to be measured.

The processing module of the device for measuring power consumption determines whether to adjust V ₁ according to the comparison result of V ₂ and the set voltage V ₀ of the target to be measured; specifically, the processing module is specifically used to judge whether the difference between V ₂ and V ₀ exceeds The preset threshold range, if the difference exceeds the preset threshold range, adjust _V1 until the difference between _V2 and _V0 does not exceed the preset threshold range; the preset threshold range can be set according to actual needs, and will not be used here be restricted;

If the difference does not exceed the preset threshold range, the processing module then judges whether V ₂ is equal to V ₀ , if V ₂ is not equal to V ₀ , then adjusts V ₁ until V 2 is equal to V ₀ ; if _{V 2 is} equal to V ₀ , then Do not adjust V ₁ ; adjust the feedback voltage of the power module by setting the processing module for calculation, comparison, and iterative control, adjust the output voltage value, monitor the online voltage of the target to be detected in real time, and fine-tune the output of the power module in time when voltage fluctuations are detected Voltage, to achieve the role of voltage stabilization, to further reduce the measurement deviation caused by online loss.

For example, the processing module receives the real-time voltage values (V ₁ and V ₂ ) and compares them with the set voltage value (V ₀ ). If it is judged that V ₂ <V ₀ , the power module is set to the minimum Increase the output of the step value until V ₂ = V ₀ ; similarly, if it is judged that V ₂ >V ₀ , the output voltage of the power module will be reduced by the minimum step value through the register method or the feedback voltage method until V ₂ =V ₀ ; the final purpose is to fine-tune the voltage of the power supply module to keep the voltage of the target to be detected consistent with the set voltage, so as to achieve the purpose of stability.

Step 205, obtain the current I of the wiring of the target to be tested according to the V ₁ , V ₂ , and R ₁ .

The processing module of the device for measuring power consumption calculates according to the formula I=(V ₁ −V ₂ )/R ₁ to obtain the current I of the wiring of the target to be measured.

Step 206, obtain the actual voltage V ₃ reaching the target to be measured according to the V ₁ , V ₂ , R ₁ , R ₂ , and I.

The processing module of the device for measuring power consumption obtains the actual voltage V ₃ reaching the target to be measured according to V ₁ , V ₂ , R ₁ , R ₂ , and I obtained in the above steps; specifically, by using the theorem that the currents of series circuits are consistent, it can be known that The current value passing through the BGA solder ball is also I, and the voltage drop on the solder ball is IR ₂ ; therefore, the actual voltage V ₃ reaching the target to be measured is calculated according to the formula V ₃ =(V ₂ -IR ₂ ).

Step 207. Obtain the power consumption of the target to be measured according to the V ₃ and the I.

The processing module of the device for measuring power consumption calculates the power consumption P of the target to be measured according to the formula P=V ₃ ×I.

Step 208: Count the average power consumption, maximum power consumption, and minimum power consumption of the target to be tested within a preset period.

The processing module of the device for measuring power consumption can count relevant power consumption information such as average power consumption, maximum power consumption, and minimum power consumption of the target to be measured within a preset period; wherein, the preset period can be set according to actual needs, and in This is not limited.

Step 209, saving and displaying the power consumption of the target to be measured.

The output module of the device for measuring power consumption outputs the measured power consumption information, such as real-time power consumption value, calculated average value, maximum value, minimum value, etc., to the display screen or terminal for real-time display, and also transmits these The power consumption information is saved to the storage medium for later calling and processing.

Fig. 3 is a display diagram of the real-time value of the measurement results of the second embodiment of the method for measuring power consumption of the present invention, and Fig. 4 is a statistical display diagram of the measurement results of the second embodiment of the method for measuring power consumption of the present invention; as shown in Fig. 3 and Fig. 4 , you can clearly see the power consumption measurement results and changing trends of the target under test.

The method for measuring power consumption provided by the embodiments of the present invention, by determining the DC equivalent resistance R ₁ of the wiring of the target to be measured and the DC equivalent resistance R ₂ of the packaging point of the target to be measured; The target to be measured is powered on and set; the output voltage _V1 of the power supply and the voltage _V2 of the power input terminal of the target to be measured are obtained; and determined according to the comparison result of the _V2 and the set voltage _V0 of the target to be measured Whether to adjust the V ₁ ; obtain _the current I of the wiring of the target to be _{tested according to the V 1 ,} V ₂ , _{and R 1 ;} The actual voltage V ₃ of the target to be measured; the power consumption of the target to be measured is obtained according to the V ₃ and the I; the average power consumption, the maximum power consumption, and the minimum power consumption of the target to be measured are counted in a preset period. Power consumption; save and present the power consumption of the target to be measured; the solution provided by the embodiment of the present invention can fully consider the voltage loss in the working process of the target to be measured, and does not require staff to read the measurement data, therefore, achieved Automatically measure power consumption and improve the stability and accuracy of power consumption measurement; in addition, by enabling and controlling the power-on settings of the target to be tested, the power-on sequence can be well controlled to further ensure the stability of the test, and by performing Calculation, comparison, and iterative control to adjust the feedback voltage of the power module, adjust the output voltage value, monitor the online voltage of the target to be detected in real time, and fine-tune the output voltage of the power module in time when the voltage fluctuation is detected, so as to achieve the function of voltage stabilization and further reduce Line losses cause measurement bias.

FIG. 5 is a schematic structural diagram of an embodiment of a device for measuring power consumption according to the present invention. As shown in FIG. 5 , the device 05 for measuring power consumption provided by the embodiment of the present invention includes: a determination module 51, an acquisition module 52, and a processing module 53; wherein,

The determination module 51 is used to determine the DC equivalent resistance R ₁ of the wiring of the target to be tested and the DC equivalent resistance R ₂ of the packaging point of the target to be measured;

The acquiring module 52 is configured to acquire the power output terminal voltage V ₁ and the power input terminal voltage V ₂ of the target to be tested;

_The processing module 53 is configured to obtain _{the current I of the wiring of the target to be tested according to the V 1 , V 2 , and R 1 ;} The actual voltage V ₃ of the target to be measured; the power consumption of the target to be measured is obtained according to the V ₃ and the I.

Further, the processing module 53 is also configured to count the average power consumption, maximum power consumption, and minimum power consumption of the target to be tested within a preset period.

Further, the device also includes: a setting module 54; wherein,

The setting module 54 is configured to perform power-on settings on the target under test according to power-on sequence rules.

Further, the processing module 53 is further configured to determine whether to adjust the V ₁ according to the comparison result between the V ₂ and the set voltage V ₀ of the target to be measured.

Further, the processing module 53 is specifically used to judge whether the difference between the V ₂ and the V ₀ exceeds the preset threshold range, and if the difference exceeds the preset threshold range, adjust the V ₁ until until the difference between the V ₂ and the V ₀ does not exceed the preset threshold range;

If the difference does not exceed the preset threshold range, it is judged whether the V ₂ is equal to the V ₀ , and if the V ₂ is not equal to the V ₀ , then the V ₁ is adjusted until the V ₂ is equal to the V 0 up to V ₀ ;

If the V ₂ is equal to the V ₀ , then the V ₁ is not adjusted.

Further, the device further includes: an output module 55; wherein,

The output module 55 is configured to save and present the power consumption of the target to be measured.

Further, the determining module 51 is specifically configured to calculate and obtain the R ₁ according to the formula R ₁ =ρ ₁ L/(0.03W), wherein, ρ ₁ is the resistivity of the wiring, L is the length of the wiring, and W is the trace width; the R ₂ is calculated according to the formula R ₂ =ρ ₂ h/πr ² , where ρ ₂ is the resistivity of the package point, h is the radius of the package point, and r is the radius of the package point pad;

The processing module 53 is specifically used to calculate and obtain the I according to the formula I=(V ₁ -V ₂ )/R ₁ ; to calculate according to the formula V ₃ =(V ₂ -IR ₂ ) by using the theorem that the current of the series circuit is consistent to obtain the V ₃ .

The device in this embodiment can be used to implement the technical solutions of the above-mentioned method embodiments, and its implementation principles and technical effects are similar, and will not be repeated here.

In practical applications, the determination module 51, the acquisition module 52, the processing module 53, the setting module 54, and the output module 55 can all be provided by a central processing unit (Central Processing Unit, CPU), a microprocessing unit located in the device 05 for measuring power consumption. Realizations such as Micro Processor Unit (MPU), Digital Signal Processor (Digital Signal Processor, DSP) or Field Programmable Gate Array (Field Programmable Gate Array, FPGA).

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (14)

1. A method for measuring power consumption, characterized in that the method comprises: Determine the DC equivalent resistance R ₁ of the wiring of the target to be tested and the DC equivalent resistance R ₂ of the packaging point of the target to be measured; Obtaining the voltage V ₁ at the output terminal of the power supply and the voltage V ₂ at the input terminal of the power supply of the target to be tested; Obtain the current I of the wiring of the target to be tested according to the V ₁ , V ₂ , and R ₁ ; Obtain the actual voltage V ₃ reaching the target to be measured according to the V ₁ , V ₂ , R ₁ , R ₂ , and I; The power consumption of the target under test is obtained according to the _V3 and the I. 2. method according to claim 1, is characterized in that, after described according to described V ₃ and described I obtain the power consumption of described target to be measured, described method also comprises: The average power consumption, maximum power consumption, and minimum power consumption of the target to be tested are counted within a preset period. 3. The method according to claim 1, characterized in that, before the acquisition of the power output voltage _V1 and the power input voltage _V2 of the target to be measured, the method further comprises: Power-on settings are performed on the target under test according to the power-on sequence rules. 4. The method according to claim 1, characterized in that, after said obtaining the power supply output terminal voltage _V1 and the power supply input terminal voltage _V2 of the target to be measured, the method further comprises: Whether to adjust V ₁ is determined according to a comparison result between V ₂ and the set voltage V ₀ of the target to be measured. 5. The method according to claim 4, wherein the determining whether to adjust the V ₁ according to the comparison result between the V ₂ and the set voltage V ₀ of the target to be measured comprises: judging whether the difference between V ₂ and V ₀ exceeds a preset threshold range, and if the difference exceeds a preset threshold range, adjusting V ₁ until the difference between V ₂ and V ₀ does not exceed the preset threshold range; If the difference does not exceed the preset threshold range, it is judged whether the V ₂ is equal to the V ₀ , and if the V ₂ is not equal to the V ₀ , then the V ₁ is adjusted until the V ₂ is equal to the V 0 up to V ₀ ; If the V ₂ is equal to the V ₀ , then the V ₁ is not adjusted. 6. The method according to claim 1, further comprising: The power consumption of the target under test is saved and displayed. 7. The method according to any one of claims 1 to 6, characterized in that, determining the DC equivalent resistance R ₁ of the wiring of the target to be measured and the DC equivalent resistance R ₂ of the packaging point of the target to be measured ,include: The R ₁ is calculated according to the formula R ₁ =ρ ₁ L/(0.03W), where ρ ₁ is the resistivity of the wiring, L is the length of the wiring, and W is the width of the wiring; The R ₂ is calculated according to the formula R ₂ =ρ ₂ h/πr ² , wherein ρ ₂ is the resistivity of the packaging point, h is the radius of the packaging point, and r is the radius of the packaging point pad; The obtaining the current I of the wiring of the target under test according to the V ₁ , V ₂ , and R ₁ includes: The I is calculated according to the formula I=(V ₁ -V ₂ )/R ₁ ; The obtaining the actual voltage V ₃ reaching the target to be measured according to the V ₁ , V ₂ , R ₁ , R ₂ , and I includes: The V ₃ is calculated according to the formula V ₃ =(V ₂ −IR ₂ ) by using the theorem that the currents of the series circuit are consistent. 8. A device for measuring power consumption, characterized in that the device comprises: A determination module, configured to determine the DC equivalent resistance R ₁ of the wiring of the target to be measured and the DC equivalent resistance R ₂ of the packaging point of the target to be measured; An acquisition module, configured to acquire the power output voltage V ₁ and the power input voltage V ₂ of the target to be tested; A processing module, configured to obtain _the current I of the wiring _of the target to be tested according to the V ₁ , V ₂ , _and R _{1 ;} The actual voltage V ₃ of the target to be measured; the power consumption of the target to be measured is obtained according to the V ₃ and the I. 9 . The device according to claim 8 , wherein the processing module is further configured to count the average power consumption, maximum power consumption, and minimum power consumption of the target under test within a preset period. 10. The device according to claim 8, further comprising: A setting module, configured to perform power-on settings on the target under test according to power-on sequence rules. 11. The device according to claim 8, wherein the processing module is further configured to determine whether to adjust the V ₁ according to a comparison result between the V ₂ and the set voltage V ₀ of the target to be measured . 12. The device according to claim 11, wherein the processing module is specifically configured to judge whether the difference between the _V2 and the _V0 exceeds a preset threshold range, if the difference exceeds a preset threshold range, Setting a threshold range, adjusting _V1 until the difference between _V2 and _V0 does not exceed the preset threshold range; If the difference does not exceed the preset threshold range, it is judged whether the V ₂ is equal to the V ₀ , and if the V ₂ is not equal to the V ₀ , then the V ₁ is adjusted until the V ₂ is equal to the V 0 up to V ₀ ; If the V ₂ is equal to the V ₀ , then the V ₁ is not adjusted. 13. The device according to claim 8, further comprising: The output module is used to save and present the power consumption of the target to be measured. 14. The device according to any one of claims 8 to 13, wherein the determining module is specifically configured to calculate and obtain the R ₁ according to the formula R ₁ =ρ ₁ L/(0.03W), wherein, ρ ₁ is the resistivity of the trace, L is the length of the trace, and W is the width of the trace; the R ₂ is calculated according to the formula R ₂ = ρ ₂ h/πr ² , where ρ ₂ is the resistivity of the packaging point, h is the radius of the package point, and r is the radius of the package point pad; The processing module is specifically used to calculate and obtain the I according to the formula I=(V ₁ -V ₂ )/R ₁ ; use the theorem that the current of a series circuit is consistent, and calculate and obtain according to the formula V ₃ =(V ₂ -IR ₂ ) The V ₃ .