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Inter-phase crosstalk compensation method for measurement of polyphase power of chip

A technology of crosstalk compensation and phase power, applied in the direction of electric power measurement through current/voltage, can solve the problems of small signal power calculation error and other problems, and achieve the effect of high real-time performance, easy implementation and high application value

Active Publication Date: 2015-01-14
SHANGHAI BEILING
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Problems solved by technology

Crosstalk noise is especially obvious when measuring small signal power. The measurement error caused by signal crosstalk noise can reach up to 0.5% of the measured value of small signal power, resulting in small signal power calculation errors, such as figure 1 , figure 2 and image 3 shown

Method used

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  • Inter-phase crosstalk compensation method for measurement of polyphase power of chip

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with accompanying drawing.

[0034] The interphase crosstalk compensation method used in the multiphase power measurement of the chip of the present invention, the chip measures the multiphase power through a plurality of single-phase channels, wherein one single-phase channel samples one current signal and one voltage signal, and measures the corresponding single phase power. Generally, multiphase refers to two or three phases. In this embodiment, the electric energy metering chip is used as an example to measure three-phase power through three single-phase channels:

[0035] see Figure 4 and Figure 5 , at this time, the phase-to-phase crosstalk compensation method of the present invention includes the following steps:

[0036] For single-phase, that is, for a single-phase channel, perform the following steps S1-S5 once; in this embodiment, perform steps S1-S5 three times to obtain three output ...

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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 [0001] The invention relates to the field of power measurement, in particular to an interphase crosstalk compensation method used for chip multiphase power measurement. Background technique [0002] With the development of integrated circuit technology and the continuous improvement of chip working speed, high speed, high integration and low power consumption have become the main characteristics of integrated circuits, which also makes the crosstalk between the interconnection lines in the chip a factor that determines the performance of the circuit. an important factor. Crosstalk refers to the coupling interference between two adjacent circuits in the system, which is caused by the coupling capacitance and coupling inductance between the interconnection lines. Its influence is mainly reflected in two aspects: one is crosstalk noise, and the other is crosstalk delay . They have become one of the main causes of signal distortion and logic errors in integrate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R21/07
Inventor 潘科韩明
Owner SHANGHAI BEILING
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