A phase measurement system and method

A technology of phase measurement and interval measurement, which is applied in the field of testing, can solve the problems of increasing measurement errors, inability to perform simultaneous measurements, and slow measurement speed, and achieve the effects of reducing measurement errors, improving phase measurement accuracy, and reducing damage

Active Publication Date: 2019-12-31
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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Problems solved by technology

[0003] In the existing measurement scheme, when measuring the period and time interval, the hardware circuit needs to be switched, and the two measurements cannot be performed at the same time, which will cause a large measurement error, that is, the two measurement results are in different hardware states (The time delay of the signal transmission path, the change of the hysteresis window), the measurement error will inevitably be introduced during this period, and there must be an error in the TDC interpolation data between the two measurement results, which will further increase the measurement error.
[0004] Existing design schemes have slow measurement speed and need to continuously switch the hardware circuit, which will cause different degrees of damage to the circuit

Method used

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[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] Phase is the time difference, expressed in degrees, between two signals of the same frequency. The traditional phase measurement is to measure the period first, then measure the time interval, and then according to the formula The calculated phase, therefore, the traditional phase measurement accuracy is low, and the measurement speed is slow.

[0037] The present invention proposes a phase measurement system and method, which optimizes the generation...

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Abstract

The present invention proposes a phase measurement system and method, which optimizes the generation method of the synchronous gate during the time interval measurement process, thereby obtaining the period data of the signal at the same time during the time interval measurement process, so that it can be simultaneously measured in one measurement. The period and time interval data are obtained, thereby greatly improving the phase measurement speed, reducing the corresponding measurement error, and improving the measurement accuracy.

Description

technical field [0001] The invention relates to the technical field of testing, in particular to a phase measurement system and a phase measurement method. Background technique [0002] With the advancement of science and technology, more and more attention is paid to the phase relationship between signals of the same frequency, and the accuracy requirements are high. The existing phase measurement scheme needs to be carried out in two steps. First, "period measurement" is performed to measure two The period of the signal, and then perform "time interval measurement", measure the time difference between the two signals, and then follow the formula Calculate the phase. [0003] In the existing measurement scheme, when measuring the period and time interval, the hardware circuit needs to be switched, and the two measurements cannot be performed at the same time, which will cause a large measurement error, that is, the two measurement results are in different hardware states ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R25/00
CPCG01R25/00
Inventor 任水生刘宝东刘强杜念文杨帆
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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