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System and method for measuring and analyzing voltage frequency

A technology of measurement and analysis, voltage and frequency, applied in frequency measurement device, conversion of frequency to pulse sequence, measurement using digital measurement technology, etc.

Inactive Publication Date: 2008-06-18
BEIJING UNIV OF TECH
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Problems solved by technology

The oscilloscope has both the functions of a multimeter and a frequency meter. It can measure voltage and frequency at the same time, and can draw the waveform at each moment. The frequency sequence is drawn as a voltage-time, frequency-time curve and voltage-frequency curve with time as the horizontal axis, which is used for professional analysis, and a single oscilloscope is often too expensive and cumbersome to operate, and it is not easy to carry because of its large size

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  • System and method for measuring and analyzing voltage frequency
  • System and method for measuring and analyzing voltage frequency
  • System and method for measuring and analyzing voltage frequency

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Embodiment Construction

[0091] This embodiment firstly describes in detail the hardware circuit, connection relationship and specific working principle of the voltage frequency measurement and analysis device, as well as the process of transmitting, converting and processing the signal to be tested in the device (see the appended Figure 1-14 ), then the main program is described, and finally the detailed steps of the time series voltage frequency analysis method for the drawing of the data characteristic curve and the calculation and analysis of the characteristic value of the above-mentioned collected data (see the attached Figure 14-15 ).

[0092] 1. Hardware circuit connection relationship, working principle and signal processing:

[0093] The hardware circuit of this embodiment is as Figure 1-14 As shown, it mainly includes signal processing circuit 1, frequency measurement circuit 2, A / D conversion circuit 3, CPU control circuit 4, keyboard display circuit 5, communication circuit 6, self-te...

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Abstract

The invention provides a measurement and analysis system of the voltage and frequency and its analysis method. The invention can be applied in the fields of the detection, data acquisition and analysis, and the frequency conversion technology. The device can measure the voltage signal and the frequency signal, and the precision can reach as high as 10<-6>. The invention provides a calculation and analysis method of the linearity of the voltage-frequency curve Alpha out, the ratio of the voltage and frequency Kout and the base point of the voltage and frequency V50Hz, coordinates with the drawing and analysis method of the voltage-time, the frequency-time and the voltage-frequency curve, to provide the effective auxiliary analysis method for the operation condition of the variable frequency equipment, thereby realizing the function of low cost, high precise, wide-range measurement on the voltage and frequency and intelligent analysis function of the measurement results.

Description

technical field [0001] The invention provides a voltage frequency measurement and analysis system and analysis method, which can be applied to the fields of detection, data acquisition and analysis, frequency conversion technology and the like. Background technique [0002] At present, the most common device for measuring voltage is a multimeter, which can measure signals such as voltage, current, and resistance, but lacks the measurement function for frequency signals; the most common device for measuring frequency is a frequency meter, which has high precision but lacks various The measurement of a voltage signal, especially the measurement of a strong electrical signal. The oscilloscope has both the functions of a multimeter and a frequency meter. It can measure voltage and frequency at the same time, and can draw the waveform at each moment. The frequency sequence is drawn as a voltage-time, frequency-time curve, and voltage-frequency curve with time as the horizontal a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R13/02G01R19/25G01R23/10
Inventor 刘经纬杨蕾王志新康凯苏宏伟
Owner BEIJING UNIV OF TECH
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