CN204177955U - The self-service calibrating installation of a kind of three-phase electric energy meter based on man-machine touth-interactive - Google Patents

Abstract

The utility model discloses a three-phase electric energy meter self-checking device based on human-machine touch interaction, which comprises a three-phase electric energy meter to be calibrated, a standard meter, a pulse acquisition module, a verification and calibration module, a central control center, a human-machine interactive touch screen, Man-machine controller, program-controlled precision power supply, meter connection module, automatic connection and disconnection module, precision clock circuit and power supply module; the central control center is connected to the pulse acquisition module through the verification and calibration module, and the pulse acquisition module is connected to the three-phase electric energy meter to be calibrated , standard meter and precision clock circuit, the three-phase electric energy meter to be calibrated is connected to the automatic connection and disconnection module through the meter base module, the automatic connection and disconnection module is connected to the first control terminal of the central control center, and the standard meter is connected to the central control center through the data transmission line In the control center, the standard meter is connected to the table base module through the program-controlled precision power supply, and the program-controlled precision power supply is connected to the central control center; the central control center is connected to the human-computer interaction touch screen through the human-machine controller, and the power supply terminal of the central control center is connected to the human-computer interaction touch screen; power supply The module powers the entire unit.

Description

A self-service verification device for three-phase electric energy meters based on human-computer touch interaction

technical field

The utility model relates to the technical field of verification and calibration of three-phase electric energy meters, in particular to a self-service verification device for three-phase electric energy meters based on man-machine touch interaction.

Background technique

With the wide application and mass installation of smart energy meters, the verification devices of energy meters are correspondingly emerging in endlessly. At present, a large number of assembly-line electric energy meter verification devices have emerged on the market, including a complete set of assembly line inspection stations and procedures, which can perform large-scale electric energy meter verification and inspection, can greatly improve production labor efficiency, and save inspection costs. However, this large-scale detection device is not suitable for the detection of a single electric energy meter. If a single electric energy meter is tested randomly, or the parameters and indicators of the electric energy meter are tested according to personal wishes and needs, the use of an assembly line detection device is cumbersome and bloated. , a waste of resources, which requires a "self-service" energy meter error calibration device to achieve error testing anytime and anywhere. At the same time, in the process of testing by the operators, due to the different proficiency of the operators in computer applications, some unskilled personnel may have certain difficulties in keyboard and mouse operations, which will affect the normal operation of the device and reduce the work efficiency.

Utility model content

The purpose of this utility model is to provide a three-phase electric energy meter self-checking device based on human-machine touch interaction, which can not only randomly test a single three-phase electric energy meter in real time, but also improve the automation performance of equipment through human-machine touch.

The technical scheme that the utility model adopts is:

A three-phase electric energy meter self-checking device based on human-computer touch interaction, including three-phase electric energy meter to be calibrated, standard meter, pulse acquisition module, verification and calibration module, central control center, human-computer interaction touch screen, human-machine controller, Program-controlled precision power supply, meter socket module, automatic connection and disconnection module, precision clock circuit and power supply module; the central control center is connected to the verification and calibration module through the bus, the verification and calibration module is connected to the pulse acquisition module, and the pulse acquisition module is connected to the calibrated Three-phase electric energy meter, standard meter and precision clock circuit, the three-phase electric energy meter to be calibrated is connected to the automatic connection and disconnection module through the meter base module, and the automatic connection and disconnection module is connected to the first control terminal of the central control center, and the standard meter is passed The data transmission line is connected to the central control center, the standard meter is connected to the meter base module through the program-controlled precision power supply, and the program-controlled precision power supply is connected to the central control center; the central control center is connected to the human-computer interaction touch screen through the man-machine controller, and the power supply terminal of the central control center is connected to the man-machine Interactive touch screen; the power supply module supplies power to the whole device.

The man-machine controller is also connected with a data output module.

The utility model collects the pulse signals of the calibrated three-phase electric energy meter and the standard meter through the pulse acquisition module, and then sends the signal to the verification and calibration module for error calibration, and sends it to the central control center after calibration; at the same time, the three-phase electric energy meter and the The standard meter is connected to the automatic connection and disconnection module through the meter base module to perform automatic wiring and disconnection to achieve the purpose of automatic verification;

Further, the human-computer interaction touch screen is connected with the human-machine controller and the central control center, and is used to process the input information of the human-computer interaction touch screen and display the calibration results, and the detection information can be set and read out through the human-computer touch interaction. The human-computer interaction touch screen is equipped with a human-machine interface, which is set with function keys, options and input, and can be operated by manual finger touch, which is simple and fast. The human-computer interaction touch screen is an inductive liquid crystal display device used to receive input signals from human fingers. When the graphic buttons on the screen are touched, the tactile feedback system on the screen drives each unit of the device according to the pre-programmed program.

Description of drawings

Fig. 1 is the circuit principle block diagram of the present utility model;

Fig. 2 is a functional block diagram of the pre-amplification DC negative feedback circuit of the present invention.

Detailed ways

As shown in Figure 1, the utility model includes a three-phase electric energy meter to be calibrated, a standard meter, a pulse acquisition module, a verification and calibration module, a central control center, a human-computer interaction touch screen, a human-machine controller, a program-controlled precision power supply, and a meter-connecting module , automatic connection and disconnection module, precision clock circuit and power supply module; the central control center is connected to the verification and calibration module through the bus, the verification and calibration module is connected to the pulse acquisition module, and the pulse acquisition module is connected to the calibrated three-phase electric energy meter, standard meter and Precision clock circuit, the three-phase electric energy meter to be calibrated is connected to the automatic connection and disconnection module through the meter base module, the automatic connection and disconnection module is connected to the first control terminal of the central control center, and the standard meter is connected to the central control center through the data transmission line, standard The meter is connected to the table base module through the program-controlled precision power supply, and the program-controlled precision power supply is connected to the central control center; Connect the data output module, and the power supply module supplies power for the whole device.

The man-machine controller is connected to the central control center through the RS-232 interface, and the man-machine controller controls the man-machine interaction touch screen and the data output module. The human-computer interaction touch screen is connected with the human-machine controller and the central control center, and is used to process the input information of the human-computer interaction touch screen and display the calibration results. The detection information can be set and read out through the human-computer touch interaction. The human-computer interaction touch screen is equipped with a human-machine interface, which is set with function keys, options and input, and can be operated by manual finger touch, which is simple and fast. The human-computer interaction touch screen is an inductive liquid crystal display device used to receive input signals from human fingers. When the graphic buttons on the screen are touched, the tactile feedback system on the screen drives each unit of the device according to the pre-programmed program. The central control center provides power for the human-computer interaction touch screen, and the human-machine controller processes and analyzes the input data, and sends the data to the central control center through the RS-232 interface. The data output module commonly uses a printer to print and display the output results.

The program-controlled precision power supply is connected to the central control center through the CAN bus, and provides working current and voltage to the standard meter and the measured electric energy meter. The specific harmonic output function of the program-controlled precision power supply can quantify the sine wave by taking one data every 0.1 degrees, and a total of 3600 points in one cycle are used as the fundamental wave, and then the harmonic components set by the user are superimposed on the fundamental wave as waveform data. Under the control of the frequency and phase circuit, the signal waveform is generated by the D/A conversion and filter circuit, and the generated waveform is sent to the power amplifier for amplification and output. The output voltage and current signals can be used for the calibration of various electric energy meters.

The pulse acquisition module and the verification and calibration module simultaneously collect the standard electric energy pulse of the standard meter and the electric energy pulse of the three-phase electric energy meter to be calibrated. At the same time, the precise clock information output by the precision clock circuit provides accurate clock information to the electric energy meter, so that the electric energy meter displays the clock. information. Among them, the verification and calibration module uses an error calculator, and the error calculator has standard marketed products, which belong to the existing mature error calculation technology, and will not be repeated here. There are standard products on the market for standard meters, and their accuracy level needs to meet the conditions of two levels or more higher than that of the three-phase electric energy meter to be calibrated.

The three-phase electric energy meter to be calibrated is automatically connected and disconnected at the meter connection module. Automatic wiring and unwiring of meters and standard meters. The automatic connection and disconnection module is a product commonly used by domestic electric energy meter verification device manufacturers to solve the problem of automatically connecting the test probe group of the device to the terminal of the three-phase electric energy meter to be calibrated. A test probe set is arranged on the base of the automatic connection and disconnection module connector, and the position of the test probe set corresponds to the verification position of the terminal hole group of the electrical energy meter to be checked on the meter loading device. The test probe group of the verification device is connected to the terminal hole group of the electric energy meter, and the voltage, current, pulse connection, multi-function interface, and 485 interface of the electric energy meter terminal are respectively crimped with the external interface. It is pressed, not retracted, and the terminal is pressed stably, evenly and reliably.

The working principle of the present utility model is illustrated below in conjunction with accompanying drawing:

As shown in Figure 1, under the control of the human-machine controller or the human-computer interaction touch screen, the program-controlled precision power supply provides the standard three-phase electric energy meter and the voltage and current required for the standard three-phase electric energy meter to work; the standard meter sends the power standard electric energy pulse to Into the verification and calibration module, the standard three-phase electric energy meter pulse is collected simultaneously through the internal error calculator and the error is automatically calculated. The error calculated by the electric energy comparison method is displayed locally and uploaded to the central control center through the high-speed industrial CAN bus. The central control center Monitor, manage and upload data to the man-machine controller on the surface data monitoring interface for processing; the central control center mainly completes button processing, man-machine controller data processing, and standard meter data processing (voltage, current, power, phase, frequency) etc.), GPS data processing, surface error data collection, multi-function meter 485 communication, voltage and current output control, various functional test control, temperature and humidity data collection, power consumption data collection, etc.; at the same time, the collected data is sent to to the man-machine controller for processing. Users can perform relevant settings and read data through the human-computer interaction touch screen. The data display results can be broadcast by voice, the data output results are saved in the human-machine controller, and the data can also be printed through the data processing and printing module.

As shown in Figure 2, when the utility model is in normal use:

First, start the equipment to start; the equipment receives the verification task, and according to the customer's needs, the power meter detection task is issued. Afterwards, the self-service loading action is carried out, that is, the customer places the calibrated three-phase electric energy meter on the meter-connecting unit of the device. After the calibrated three-phase electric energy meter is properly placed, the device automatically judges whether the barcode of the calibrated three-phase electric energy meter is readable or not. If so, then enter the next step program, if not, then jump to the voice prompt. After the barcode of the three-phase electric energy meter to be calibrated is read out, the automatic connection and disconnection module performs automatic wiring. The voltage, current loop and pulse terminal make the energy meter in the working state and display the current and voltage required for the work. Then, determine the automatic calibration scheme, that is, the customer selects the load current point or various functional test items such as start-up and creep test through the human-computer interaction touch screen; The computer controller controls the current and voltage output of the program-controlled precision power supply to the three-phase standard electric energy meter and the three-phase electric energy meter to be calibrated, so that it outputs the standard pulse and the calibrated pulse to the error calculator, and the error calculator calculates the calibrated energy meter through the comparison method. The error value of the three-phase electric energy meter; including other test processes of whether the meter has creep; after the error calibration is completed, the error result will be displayed and the wire will be automatically disconnected. , The disconnection module automatically disconnects all connections with the three-phase electric energy meter to be calibrated; after that, a voice prompt will prompt the customer that the error calibration is over, whether it is necessary to print out the error calibration test sheet, and take away the three-phase electric energy meter to be calibrated; or remind the customer The watt-hour meter being calibrated does not meet the requirements. Self-service unloading, the customer takes the calibrated three-phase electric energy meter from the socket of the device; prints out the results and uploads them, the data output prints out the error calibration test sheet according to the customer's requirements, and the human-machine controller will record the detailed process of error calibration And the results are saved to the database and uploaded to the central control center, which is convenient for query management.

Claims (2)

1. based on the self-service calibrating installation of three-phase electric energy meter of man-machine touth-interactive, it is characterized in that: comprise by school three-phase electric energy meter, standard scale, pulse collection module, assay calibration module, CCC, man-machine interaction touch-screen, Human-machine Control device, programme control precision power supply, meter adapting-seat module, automatically connect, module of taking out stitches, precision interval clock circuit and supply module; Described CCC connects assay calibration module by bus, assay calibration model calling pulse collection module, pulse collection model calling is by school three-phase electric energy meter, standard scale and precision interval clock circuit, automatically connect by meter adapting-seat model calling by school three-phase electric energy meter, module of taking out stitches, automatically connect, the first control end of model calling CCC of taking out stitches, standard scale connects CCC by data line, standard scale connects meter adapting-seat module by programme control precision power supply, and programme control precision power supply connects CCC; CCC connects man-machine interaction touch-screen by Human-machine Control device, and the feeder ear of CCC connects man-machine interaction touch-screen; Supply module is that whole device is powered.

2. the self-service calibrating installation of the three-phase electric energy meter based on man-machine touth-interactive according to claim 1, is characterized in that: described Human-machine Control device also connection data output module.