CN203350433U - Device capable of rapidly determining error of electric energy meter - Google Patents

Abstract

The utility model discloses a device for quickly measuring the error of an electric energy meter. The structure includes a carrier machine. The carrier machine is provided with a parameter input module for supporting manual input of operating parameters of the electric energy meter, and a camera device is used to collect periodic pulses on the electric energy meter. The pulse signal acquisition module of the spot signal, the data analysis and conversion module for data simulation and periodic identification of the pulse spot image, the comparison of the simulated data obtained by the data analysis and conversion module with the manually input data and the calculation of real-time error data Computational comparison module and display module. The utility model can realize non-contact fast and accurate measurement of the error of the electric energy meter by using an ordinary mobile phone.

Description

A device for quickly measuring the error of electric energy meter

technical field

The utility model relates to the technical field of error detection of electronic electric energy meters, in particular to a non-contact electric energy meter error measuring device which can be realized by ordinary mobile phones.

Background technique

The existing electric energy meter calibration method is relatively cumbersome, requires wiring and connection, and there is a certain risk of electric shock, and the calibration equipment is bulky, which is not conducive to on-site calibration operations. Since the professional equipment used for calibration needs to be purchased, the cost is relatively large, and the overall calibration takes a long time.

Utility model content

The technical problem to be solved by the utility model is to provide a device for quickly measuring the error of the electric energy meter, which can realize the non-contact rapid and accurate measurement of the error of the electric energy meter by using an ordinary mobile phone.

In order to solve the problems of the technologies described above, the technical solutions adopted by the utility model are as follows.

A device for quickly measuring the error of an electric energy meter is suitable for accurate measurement of the error of an electronic electric energy meter. The pulse signal acquisition module of the periodic pulse spot signal on the electric energy meter, the data analysis conversion module used for data simulation and periodic identification of the pulse spot image, and the comparison of the simulated data obtained by the data analysis conversion module with the manually input data A calculation comparison module and a display module for aligning and calculating real-time error data. ;

As a preferred technical solution of the utility model, the parameter input module is provided with a voltage input unit, a current input unit and a natural frequency input unit of the electric energy meter pulse lamp.

As a preferred technical solution of the present invention, the data analysis conversion module includes a spot shape calculation unit, a spot brightness calculation unit, a spot color calculation unit and a weighting calculation unit.

As a preferred technical solution of the present invention, the data analysis conversion module also includes a scene mode preset unit, which is used to calculate the spot shape calculation unit, the spot brightness calculation unit, the spot color calculation unit and the weighting unit according to the lighting conditions of the external environment. The calculation parameters of the calculation unit are adjusted.

As a preferred technical solution of the present invention, the scene mode preset unit specifically includes three modes: color scene mode, black and white scene mode and grayscale scene mode.

As a preferred technical solution of the utility model, the calculation and comparison module further includes an error value accumulation calculation unit for converting the measured real-time error value of the electric energy meter into an average error value against time.

As a preferred technical solution of the present utility model, the carrier machine adopts a smart communication mobile phone; the parameter input module is an input keyboard or a touch screen of a smart communication mobile phone; the pulse signal acquisition module is a camera of a smart communication mobile phone; The data analysis conversion module and the calculation comparison module adopt the central processing unit of the smart communication mobile phone; the display module is the display screen of the smart communication mobile phone.

The beneficial effects produced by adopting the above-mentioned technical scheme are: the utility model overcomes the deficiencies of the prior art, has high practical value and popularization significance, and has many outstanding advantages: ① no wiring is required, only the parameters need to be input , compared with the original test method, it is safer and more reliable, and reduces safety accidents; ②The mobile phone program is easy to install and operate, compared with the original verification method, reducing operation steps and saving effort; ③Software release, hardware relies on the mobile phone platform, compared with the original verification method As far as the method needs to purchase professional equipment, there is no need to purchase related equipment to save money, and it is compact and easy to carry; ④The time required for calibration is significantly reduced, only a few tens of seconds. Compared with the original calibration method, the work efficiency is improved and shortened. Check time.

Description of drawings

Fig. 1 is the structure and process schematic diagram of a specific embodiment of the present utility model.

Detailed ways

Example 1

A device for quickly measuring the error of an electric energy meter is suitable for accurate measurement of the error of an electronic electric energy meter. The pulse signal acquisition module of the periodic pulse spot signal on the electric energy meter, the data analysis conversion module used for data simulation and periodic identification of the pulse spot image, and the comparison of the simulated data obtained by the data analysis conversion module with the manually input data A calculation comparison module and a display module for aligning and calculating real-time error data. The parameter input module is provided with a voltage input unit, a current input unit and a natural frequency input unit of the pulse light of the electric energy meter. The data analysis conversion module includes a spot shape calculation unit, a spot brightness calculation unit, a spot color calculation unit and a weighting calculation unit; the data analysis conversion module also includes a scene mode preset unit, which is used to adjust the spot shape calculation unit, The calculation parameters of the spot brightness calculation unit, the spot color calculation unit and the weighting calculation unit are adjusted; the scene mode preset unit specifically includes three modes: color scene mode, black and white scene mode and grayscale scene mode. The calculation and comparison module also includes an error value accumulation calculation unit, which is used to convert the measured real-time error value of the electric energy meter into an average error value with respect to time.

Use the smart communication mobile phone as the carrier of the measurement device, integrate the measurement process into a mobile phone software program, install the software program on the smart communication mobile phone, and follow the steps below:

A. Read the current value, voltage value and natural frequency value of the pulse lamp on the electric energy meter to be tested, and manually input the above values through the input keyboard or touch screen of the smart phone, as the standard reference value when calculating the error comparison;

B. Use the mobile phone camera to collect image data from the periodic pulse signal sent by the electric energy meter;

C. Use the central processing unit of the mobile phone to conduct online analysis on the collected image data;

C-0. Set the scene mode according to the light conditions of the external environment: color scene mode or black and white scene mode or grayscale scene mode;

C-1. Using the spot shape calculation unit to perform threshold analysis and calculation on the periodic change of the pulse spot size to obtain the first set of pulse frequency values;

C-2. Using the spot brightness calculation unit to perform threshold analysis and calculation on the periodic change of the pulse spot brightness to obtain the second set of pulse frequency values;

C-3. Use the spot color calculation unit to perform threshold analysis and calculation on the periodic change of the pulse spot color, and obtain the second set of pulse frequency values; the periodic change of the spot color uses red and white as calculation indicators, and calculates the redness of the spot color. , white conversion frequency;

C-4, using the weighted calculation unit to carry out weighted average calculation on the above-mentioned three groups of pulse frequency values obtained, to obtain the final pulse frequency value;

If step C-0 is preset as the grayscale scene mode, then the weight of the first group of pulse frequency values is twice that of the second and third group of pulse frequency values when performing weighted average calculation; the second and third group of pulses Frequency values are weighted equally;

If step C-0 is preset as the black and white scene mode, then the weight of the second group of pulse frequency values is twice that of the first and third group of pulse frequency values when performing weighted average calculation; the first and third group of pulse frequency values Values are weighted equally;

If step C-0 is preset as the color scene mode, then the weight of the third group of pulse frequency values is twice that of the first and second group of pulse frequency values when performing weighted average calculation; the first and second group of pulse frequency values Values are weighted equally;

D. The central processing unit of the mobile phone calculates the pulse frequency value of the electric energy meter according to the current value, voltage value and natural frequency value of the pulse lamp manually input in step A, and then compares this value with the measured pulse frequency value obtained in step C Yes, calculate and obtain the real-time error value of the electric energy meter; then use the error value accumulation calculation unit to convert the real-time error value of the electric energy meter into the average error value for time;

E. The display screen of the mobile phone displays the error value obtained in step D online.

The utility model has the advantages in the following aspects: 1. No wiring is needed, only parameters need to be input, which is safer and more reliable than the original test method. Reduced safety accidents; 2. The mobile phone program is easy to install and operate. Compared with the original verification method, the operation steps are reduced and more labor-saving; 3. The software is released, and the hardware relies on the mobile phone platform. Compared with the original verification method, which requires the purchase of professional equipment, There is no need to purchase related equipment to save money, and it is compact and easy to carry; 4. The time required for calibration is significantly reduced, only a few tens of seconds. Compared with the original calibration method, the work efficiency is improved and the calibration time is shortened. Therefore, it has high practical value and promotional significance.

The above description is only proposed as an implementable technical solution of the utility model, not as a single restriction on the technical solution itself.

Claims (4)

1. A device for quickly measuring the error of an electric energy meter, which is suitable for accurate measurement of the error of an electronic electric energy meter, is characterized in that: its structure includes a carrier machine, and the carrier machine is provided with a parameter input for supporting manual input of the operating parameters of the electric energy meter module, a pulse signal acquisition module that uses a camera device to collect periodic pulse spot signals on the electric energy meter, a data analysis conversion module for performing data simulation and periodic identification of pulse spot images, and a data analysis conversion module for converting the simulated data obtained by the data analysis conversion module into Comparing the manually input data and calculating the calculation and comparison module and the display module of the real-time error data. 2. The device for quickly measuring the error of the electric energy meter according to claim 1, wherein the parameter input module is provided with a voltage input unit, a current input unit and a natural frequency input unit of the pulse lamp of the electric energy meter. 3. The device for quickly measuring the error of the electric energy meter according to claim 1, wherein the calculation and comparison module further includes an error value accumulation calculation unit, which is used to convert the measured real-time error value of the electric energy meter into a relative time The average error value of . 4. The device for quickly measuring the error of the electric energy meter according to any one of claims 1-3, characterized in that: the carrier machine adopts a smart communication mobile phone; the parameter input module is an input keyboard or a touch screen of a smart communication mobile phone; The pulse signal acquisition module is a camera of a smart communication mobile phone; the data analysis conversion module and the calculation comparison module adopt a central processing unit of a smart communication mobile phone; the display module is a display screen of a smart communication mobile phone.

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