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Passive device intelligent equivalent circuit model and parameter measuring device and working method

A technology of equivalent circuit model and passive devices, which is applied in the direction of measuring devices, capacitance measurement, and measurement of electrical variables, etc., can solve problems such as insufficient efficiency and precision, fixed broadband fitting structure, and complicated operation

Active Publication Date: 2019-12-06
SOUTH CHINA UNIV OF TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of traditional methods such as small measurement frequency range, complicated operation, high cost, insufficient efficiency and precision, fixed broadband fitting structure, and limited types of applicable passive devices, etc., and provide a passive device intelligent etc. Efficient circuit model and parameter measurement device and working method

Method used

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  • Passive device intelligent equivalent circuit model and parameter measuring device and working method
  • Passive device intelligent equivalent circuit model and parameter measuring device and working method
  • Passive device intelligent equivalent circuit model and parameter measuring device and working method

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Embodiment 1

[0049] Such as figure 1 As shown, it is a schematic structural diagram of an intelligent equivalent circuit model of a passive device and a parameter measurement device disclosed in this embodiment. It consists of five modules: a human-computer interaction display and data processing module 101 , a signal sending module 102 , an intelligent equivalent test circuit module 103 , a signal receiving module 104 , and a power supply module 105 .

[0050]In this embodiment, to measure the equivalent circuit model and parameters of the passive device to be tested, the passive device to be measured is first connected in series to the intelligent equivalent test circuit module 103 through the leads, and the power supply module 105 performs the test for each module. Power supply and fully start each module, then the human-computer interaction display and data processing module 101 generates a specific digital signal, transmits it to the signal sending module 102 and converts it into an a...

Embodiment 2

[0055] Combine below Figure 5 and Figure 6 , an example is given to describe the working method of an intelligent equivalent circuit model of a passive device and a parameter measurement device. Such as Figure 6 As shown, the working steps of the device include:

[0056] S1. Test preparation work. The first step is to connect a certain passive device to be tested to the intelligent equivalent test circuit module, and then supply power to each module through the power module and fully start each module.

[0057] S2. Carry out signal transmission, set the sending sampling rate, start and cut-off frequency, amplitude, duration and other information through the human-computer interaction display and data processing module, generate specific sending signals according to these parameters, send and save the set numbers The signal is sent to the signal sending module, and the sending module converts the digital signal from the human-computer interaction display and data processi...

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Abstract

The invention discloses a passive device intelligent equivalent circuit model and parameter measuring device and a working method. The device comprises a man-machine interaction display and data processing module, a signal sending module, an intelligent equivalent test circuit module, a signal receiving module and a power supply module. The method is characterized by connecting a passive device inseries to an intelligent equivalent test circuit module through a lead wire and measuring initial frequency response; intelligently dividing the whole frequency band into a plurality of segmented frequencies by utilizing a mode recognition algorithm; intelligently selecting an optimal test circuit and an optimal equivalent circuit model for each segmented frequency; and finally, through an intelligent equivalent computing method, obtaining an optimal RLC equivalent circuit model of the passive device under different frequency bands and element parameters thereof and displaying the element parameters in a segmented frequency band manner. The device disclosed by the invention is relatively simple in circuit; the measurement result is intelligently and equivalently calculated in different frequency bands; and the device is high in speed, wide in application range, high in precision and higher in practical application value.

Description

technical field [0001] The invention relates to the technical field of impedance measurement, in particular to an intelligent equivalent circuit model of a passive device, a parameter measurement device and a working method, capable of intelligently equivalently outputting passive devices to be measured in different frequency bands according to their frequency response characteristics. Optimal zero-order, first-order, second-order and third-order series-parallel RLC circuit models, and get the component parameters of equivalent resistance, equivalent capacitance and equivalent inductance in the equivalent circuit of each frequency band. Background technique [0002] In recent years, impedance measurement technology and frequency response detection technology have made great progress and are widely used, mainly in the fields of industry, medical and health, transportation, national defense research and energy. Taking the ultrasonic transducer as an example, the ultrasonic tra...

Claims

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Application Information

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IPC IPC(8): G01R27/02G01R27/26
CPCG01R27/02G01R27/26G01R27/2605
Inventor 韦岗代岳杨萃
Owner SOUTH CHINA UNIV OF TECH
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