Synchronous multi-frequency impedance measurement method and device

A technology of impedance measurement and reference impedance, which is applied in the direction of measuring devices, measuring electrical variables, measuring resistance/reactance/impedance, etc., can solve the problems that it is difficult to quickly measure the impedance frequency spectrum of the sample to be tested, and it takes a long time to achieve accuracy. High, wide measurement frequency range, fast measurement effect

Inactive Publication Date: 2014-12-17
SHANGHAI DIANJI UNIV
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Problems solved by technology

[0003] However, the existing impedance measurement method has the following disadvantages: when the impedance of different frequencies needs to be measured, the existing impedance measurement method can only continue to measure another frequency point after the measurement of one frequency point, that is, only Can measure the impedance of the sample under test at a single frequency
In this way, it takes a long time to measure the impedance of the sample to be tested at multiple frequencies, so it is difficult to quickly measure the frequency spectrum of the impedance of the sample to be tested

Method used

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  • Synchronous multi-frequency impedance measurement method and device
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  • Synchronous multi-frequency impedance measurement method and device

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Embodiment Construction

[0040] The synchronous multi-frequency impedance measurement method and device of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] see Figure 1A, a method for measuring synchronous multi-frequency impedance, comprising the following steps: Step S110, simultaneously loading multiple input voltages of different frequencies and corresponding multiple reference voltages of different frequencies on the measurement bridge circuit; wherein the measurement bridge circuit includes the Measure impedance, reference impedance, operational amplifier; Step S120, generate the vector input voltage of a plurality of different frequencies on the described impedance to be measured, generate the vector reference voltage of a plurality of different frequencies on the described reference impedance; Step S130, respectively The generated vector input voltage of each of the different frequencies and the generated vector reference voltage o...

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Abstract

The invention discloses a synchronous multi-frequency impedance measurement method which can overcome the shortcoming that the prior art can only measure single-frequency impedance at any moment and can achieve synchronous measurement of the multi-frequency impedance. The synchronous multi-frequency impedance measurement method provides a synchronous multi-frequency impedance measurement device to achieve a plurality of different frequencies and simultaneously effect on a sample to be tested, the impedance at different frequencies can be separately measured simultaneously, and further purposes of synchronous effecting and synchronous measuring are achieved.

Description

technical field [0001] The invention relates to electronic component analysis, material analysis and related technical fields, in particular to a synchronous multi-frequency measurement method and a device thereof suitable for rapid measurement of impedance of samples to be tested at different frequencies. Background technique [0002] At present, the general method of measuring impedance is accomplished by means of an impedance measuring device. During the measurement process, the excitation source in the impedance measurement device is used to make it emit an excitation waveform of a certain frequency to act on the impedance to be measured and a reference impedance of known resistance connected in series with the impedance to be measured, and then pass the vector voltage The meter detects the voltage on the impedance to be measured and the reference impedance, and calculates the impedance to be measured. This method has the characteristics of wide frequency range and high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R27/02
Inventor 胥飞
Owner SHANGHAI DIANJI UNIV
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