CN103063910B - Inter-phase crosstalk compensation method for measurement of polyphase power of chip - Google Patents
Inter-phase crosstalk compensation method for measurement of polyphase power of chip Download PDFInfo
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- CN103063910B CN103063910B CN201210584538.2A CN201210584538A CN103063910B CN 103063910 B CN103063910 B CN 103063910B CN 201210584538 A CN201210584538 A CN 201210584538A CN 103063910 B CN103063910 B CN 103063910B
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Abstract
The invention discloses an inter-phase crosstalk compensation method for measurement of polyphase power of a chip. The chip passes through a plurality of single-phase passages, and each single-phase passage adopts the mode of a current signal and a voltage signal to measure the polyphase power. The inter-phase crosstalk compensation method includes compensating single-phase active power and single-phase reactive power, and inversely compensating total active power and total reactive power. Namely, small-signal compensation is conducted on measurement of each phase of power, a certain number of inverse compensation is conducted on measurement of the polyphase power, and accordingly error change which is caused by crosstalk noises is offset, and the problem that a small signal in the chip is affected by the crosstalk noises easily so as to cause an error of power calculation is solved.
Description
Technical field
The present invention relates to power measurement field, particularly relate to inter-phase crosstalk compensation method when a kind of polyphase power for chip is measured.
Background technology
Along with the development of integrated circuit technology level and improving constantly of chip operation speed, at a high speed, high integration and low-power consumption become the principal feature of integrated circuit, and this also makes the crosstalk between On Chip Interconnects become a key factor of decision-making circuit performance.Crosstalk refers to the coupled interference between adjacent two circuit of internal system, is caused by the coupling capacitance between interconnection line and coupling inductance, and its impact is mainly reflected in 2 aspects: one is crosstalk noise, and another one is crosstalk time delay.They have become the one of the main reasons of integrated circuit signal distortion and logic error.
At present, when using chip to carry out polyphase power measurement, be vulnerable to the interference of crosstalk noise, such as: for the computation chip of electric energy metrical, many uses AFE (analog front end) and digital signal processing carry out calculating correction values, owing to measuring three phase power simultaneously, need to sample three road electric currents and three road voltages for rated output (comprising active power and reactive power) simultaneously.The sampling of current/voltage adopts 6 road AD converters altogether, these mimic channels and following digital circuit integrated by a chip, inevitably there is the crosstalk between analog channel.Crosstalk noise is particularly evident when measuring small signal power, and the measuring error that signal cross-talk noise causes is maximum reaches 0.5% of small signal power measured value, thus causes the small signal power error of calculation, as shown in Figure 1, Figure 2 and Figure 3.Wherein, Fig. 1 represents metering core on-chip circuit crosstalk Physical layer schematic diagram, and in figure, Insulator represents insulation course; Substrate(ground) support plate is represented; Fig. 2 represents that metering core on-chip circuit crosstalk layout(connects up) schematic diagram, A, B, C represent three-phase; Fig. 3 represents metering core on-chip circuit cross-talk models schematic diagram, and Aggressor net A represents interference line A; Victim net B represents and is disturbed line B; Aggressor net C represents interference line C; Driver represents pre-driver circuitry; Receiver represents rear class receiving circuit.
Therefore, the error in dipping solving small-signal has very high researching value.
Summary of the invention
The invention provides a kind of inter-phase crosstalk compensation method, be intended to chip carry out polyphase power measure time, by carrying out small-signal compensation to every phase power measurement, the inverse of some being carried out to polyphase power measurement and compensates, thus offsetting the error change because crosstalk noise brings.
The technical scheme realizing above-mentioned purpose is:
Inter-phase crosstalk compensation method when a kind of polyphase power for chip is measured, described chip is by multiple single-phase passage, the form of a road current signal and a road voltage signal and single-phase passage is sampled, measure polyphase power, described inter-phase crosstalk compensation method comprises: compensate single-phase active power and single-phase reactive power, carries out inverse compensation to total active power and total reactive power.
Inter-phase crosstalk compensation method when the above-mentioned polyphase power for chip is measured, wherein, described inter-phase crosstalk compensation method comprises the following steps:
For single-phase, namely for a single-phase passage:
Step S1, according to the current signal and the voltage signal that correspond to single-phase passage, calculates the single-phase active power of this single-phase passage and single-phase reactive power;
Step S2, compensates respectively to active power single-phase described in step S1 and single-phase reactive power, the single-phase active power after being compensated and the single-phase reactive power after compensating;
Step S3, carries out small-signal detection to current signal described in step S1 and voltage signal, judges whether this current signal and voltage signal are small-signal, if so, enter step S4; If not, step S5 is entered;
Step S4, selects the single-phase active power after described compensation as the single-phase active power exported, and selects the single-phase reactive power after described compensation as the single-phase reactive power exported; Enter step S6;
Step S5, selects single-phase active power described in step S1 as the single-phase active power exported, and selects single-phase reactive power described in step S1 as the single-phase reactive power exported; Enter step S6;
For heterogeneous, namely for multiple single-phase passage:
Step S6, has a single-phase passage, just an experience step S1 ~ S5; The single-phase active power of the multiple described output obtained is added, obtains total active power, and inverse compensation is carried out to it; The single-phase reactive power of the multiple described output obtained is added, obtains total reactive power, and inverse compensation is carried out to it.
Inter-phase crosstalk compensation method when the above-mentioned polyphase power for chip is measured, wherein,
By the single-phase active power of formula W ATTS=+WATTOS, realize the compensation to single-phase active power, wherein: WATTS represents the single-phase active power after compensation, and WATTOS represents active power offset correction;
By the single-phase reactive power of formula VARS=+VAROS, realize the compensation to single-phase reactive power, wherein: VARS represents the single-phase reactive power after compensation, and VAROS represents reactive power offset correction;
By the total active power of formula F WATT=+FWATTOS*WATTFAT, realize the inverse of total active power and compensate, wherein: FWATT represents the total active power after inverse compensation, FWATTOS represents the active power offset correction after inverse compensation; WATTFAT represents meritorious inverse compensation factor;
By the total reactive power of formula F VAR=+FVAROS*VARFAT, realize the inverse of total reactive power and compensate, wherein: FVAR represents the total reactive power after inverse compensation, FVAROS represents the reactive power offset correction after inverse compensation; VARFAT represents idle inverse compensation factor.
Inter-phase crosstalk compensation method when the above-mentioned polyphase power for chip is measured, wherein, described meritorious inverse compensation factor and idle inverse compensation factor, according to multichannel current signal and plurality of voltages signal, calculate.
Inter-phase crosstalk compensation method when the above-mentioned polyphase power for chip is measured, wherein, the active power offset correction after described active power offset correction, reactive power offset correction, inverse compensation and the reactive power offset correction after inverse compensation all pass through register configuration.
Inter-phase crosstalk compensation method when the above-mentioned polyphase power for chip is measured, wherein, described heterogeneous finger: two-phase or three-phase.
Inter-phase crosstalk compensation method when the above-mentioned polyphase power for chip is measured, wherein, described chip refers to electric energy computation chip.
Inter-phase crosstalk compensation method when the above-mentioned polyphase power for chip is measured, wherein, in described step S1, single-phase active power
single-phase reactive power
wherein: V is the magnitude of voltage of voltage signal; I is the current value of current signal;
represent the phase differential of voltage and current.
The invention has the beneficial effects as follows: the present invention is by carrying out small-signal compensation to every phase power measurement, carry out the inverse of some to polyphase power measurement to compensate, thus the error change of offsetting because crosstalk noise brings, solve small-signal in chip and be easily subject to crosstalk noise impact, and cause the problem of power calculation error.Meanwhile, real-time of the present invention is high, and compensation way is flexible, is easy to realize, has very high using value.
Accompanying drawing explanation
Fig. 1 is metering core on-chip circuit crosstalk Physical layer schematic diagram;
Fig. 2 is metering core on-chip circuit crosstalk layout schematic diagram;
Fig. 3 is metering core on-chip circuit cross-talk models schematic diagram
Fig. 4 is the schematic diagram that in the present invention, heterogeneous active power calculates and compensates;
Fig. 5 is the schematic diagram that in the present invention, heterogeneous reactive power calculates and compensates.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Inter-phase crosstalk compensation method when polyphase power for chip of the present invention is measured, described chip measures polyphase power by multiple single-phase passage, and wherein, a single-phase passage is sampled a road current signal and a road voltage signal, measures the single-phase power of correspondence.Generally, heterogeneous finger two-phase or three-phase.In the present embodiment, with electric energy computation chip, measuring three phase power by three single-phase passages is example:
Refer to Fig. 4 and Fig. 5, now, inter-phase crosstalk compensation method of the present invention comprises the following steps:
For single-phase, namely for a single-phase passage, perform the following step S1 ~ S5; In the present embodiment, perform three step S1 ~ S5, obtain three export single-phase active power AWATT, BWATT, CWATT, and three export single-phase reactive power AVAR, BVAR, CVAR:
Step S1, select a single-phase passage, according to corresponding to the current signal of single-phase passage selected by this and voltage signal 406(phase A, phase B or phase C), calculate the single-phase active power WATT401 of this single-phase passage and single-phase reactive power VAR501; Wherein, single-phase active power
single-phase reactive power
wherein: V is the magnitude of voltage of voltage signal; I is the current value of current signal;
represent the phase differential of voltage and current;
Step S2, active power WATT401 single-phase in step S1 is compensated, namely by formula W ATTS=WATT+WATTOS, single-phase active power WATTS (AWATTS, BWATTS or CWATTS) 403 after being compensated, wherein: WATTOS(AWATTOS, BWATTOS or CWATTOS) 402 represent active power offset correction, pass through register configuration; Reactive power VAR501 single-phase in step S1 is compensated, namely by formula VARS=VAR+VAROS, single-phase reactive power VARS (AVARS, BVARS or CVARS) 503 after being compensated, wherein: VAROS(AVAROS, BVAROS or CVAROS) 502 represent reactive power offset correction, pass through register configuration;
Step S3, by small-signal detecting unit (Small-signal detect) 405, to current signal and voltage signal 406(phase A, phase B or phase C) carry out small-signal detection, judge whether this current signal and voltage signal 406 are small-signal, if so, step S4 is entered; If not, step S5 is entered;
Step S4, by meritorious MUX 404, selects the single-phase active power WATTS (AWATTS, BWATTS or CWATTS) 403 after compensating as the single-phase active power (AWATT, BWATT or CWATT) exported; By idle MUX 504, select the single-phase reactive power VARS (AVARS, BVARS or CVARS) 503 after compensating as the single-phase reactive power (AVAR, BVAR or CVAR) exported; Directly enter step S6;
Step S5, by meritorious MUX 404, selects single-phase active power WATT401 as the single-phase active power (AWATT, BWATT or CWATT) exported; By idle MUX 504, select single-phase reactive power VAR501 as the single-phase reactive power (AVAR, BVAR or CVAR) exported; Enter step S6;
For heterogeneous, namely for multiple single-phase passage, in the present embodiment, for three single-phase passages:
Step S6, there is a single-phase passage, a just experience step S1 ~ S5, so, three single-phase active power AWATT, BWATT and CWATT exported obtained are added, obtain total active power 409, by meritorious inverse compensating unit (inverse compensation) 407, inverse compensation is carried out to total active power 409, obtain the total active power FWATT408 after inverse compensation, wherein: FWATT=(AWATT+BWATT+CWATT)+(FWATTOS*WATTFAT), FWATTOS410 represents the active power offset correction after inverse compensation, passes through register configuration; WATTFAT represents meritorious inverse compensation factor, detects three road current signals and voltage signal 406phase A, phaseB and phase C, then calculated by software algorithm by small-signal detecting unit 405.
Three single-phase reactive power AVAR, BVAR and CVAR exported obtained are added, obtain total reactive power 509, by idle inverse compensating unit (inverse compensation) 507, inverse compensation is carried out to total reactive power 509, obtain the total reactive power FVAR508 after inverse compensation, wherein: FVAR=(AVAR+BVAR+CVAR)+(FVAROS*VARFAT), FVAROS510 represents the reactive power offset correction after inverse compensation, passes through register configuration; VARFAT represents idle inverse compensation factor, detects three road current signals and voltage signal 406phase A, phase B and phase C, then calculated by software algorithm by small-signal detecting unit 405.
In sum, the present invention solves small-signal in chip and is easily subject to crosstalk noise impact, and causes the problem of power calculation error, and have real-time high, compensation way is flexible, is easy to the advantages such as realization.
Above embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, various conversion or modification can also be made, therefore all equivalent technical schemes also should belong to category of the present invention, should be limited by each claim.
Claims (6)
1. the inter-phase crosstalk compensation method when polyphase power for chip is measured, described chip is by multiple single-phase passage, the form of a road current signal and a road voltage signal and single-phase passage is sampled, measure polyphase power, it is characterized in that, described inter-phase crosstalk compensation method comprises: compensate single-phase active power and single-phase reactive power, and carry out inverse compensation to total active power and total reactive power, described inter-phase crosstalk compensation method comprises the following steps:
For single-phase, namely for a single-phase passage:
Step S1, according to the current signal and the voltage signal that correspond to single-phase passage, calculates the single-phase active power of this single-phase passage and single-phase reactive power;
Step S2, compensates respectively to active power single-phase described in step S1 and single-phase reactive power, the single-phase active power after being compensated and the single-phase reactive power after compensating;
Step S3, carries out small-signal detection to current signal described in step S1 and voltage signal, judges whether this current signal and voltage signal are small-signal, if so, enter step S4; If not, step S5 is entered;
Step S4, selects the single-phase active power after described compensation as the single-phase active power exported, and selects the single-phase reactive power after described compensation as the single-phase reactive power exported; Enter step S6;
Step S5, selects single-phase active power described in step S1 as the single-phase active power exported, and selects single-phase reactive power described in step S1 as the single-phase reactive power exported; Enter step S6;
For heterogeneous, namely for multiple single-phase passage:
Step S6, has a single-phase passage, just an experience step S1 ~ S5; The single-phase active power of the multiple described output obtained is added, obtains total active power, and inverse compensation is carried out to it; The single-phase reactive power of the multiple described output obtained is added, obtains total reactive power, and inverse compensation is carried out to it,
By the single-phase active power of formula W ATTS=+WATTOS, realize the compensation to single-phase active power, wherein: WATTS represents the single-phase active power after compensation, and WATTOS represents active power offset correction;
By the single-phase reactive power of formula VARS=+VAROS, realize the compensation to single-phase reactive power, wherein: VARS represents the single-phase reactive power after compensation, and VAROS represents reactive power offset correction;
By the total active power of formula F WATT=+FWATTOS
*wATTFAT, realizes the inverse of total active power and compensates, and wherein: FWATT represents the total active power after inverse compensation, FWATTOS represents the active power offset correction after inverse compensation; WATTFAT represents meritorious inverse compensation factor;
By the total reactive power of formula F VAR=+FVAROS
*vARFAT, realizes the inverse of total reactive power and compensates, and wherein: FVAR represents the total reactive power after inverse compensation, FVAROS represents the reactive power offset correction after inverse compensation; VARFAT represents idle inverse compensation factor.
2. the inter-phase crosstalk compensation method when polyphase power for chip according to claim 1 is measured, is characterized in that, described meritorious inverse compensation factor and idle inverse compensation factor, according to multichannel current signal and plurality of voltages signal, calculate.
3. the inter-phase crosstalk compensation method when polyphase power for chip according to claim 1 is measured, it is characterized in that, the active power offset correction after described active power offset correction, reactive power offset correction, inverse compensation and the reactive power offset correction after inverse compensation all pass through register configuration.
4. the inter-phase crosstalk compensation method when polyphase power for chip according to claim 1 is measured, is characterized in that, described heterogeneous finger: two-phase or three-phase.
5. the inter-phase crosstalk compensation method when polyphase power for chip according to claim 1 is measured, it is characterized in that, described chip refers to electric energy computation chip.
6. the inter-phase crosstalk compensation method when polyphase power for chip according to claim 1 is measured, is characterized in that, in described step S1, and single-phase active power
single-phase reactive power
wherein: V is the magnitude of voltage of voltage signal; I is the current value of current signal;
represent the phase differential of voltage and current.
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