CN201765275U

CN201765275U - Three-phase electric energy meter

Info

Publication number: CN201765275U
Application number: CN2010205274842U
Authority: CN
Inventors: 梁东; 王朝辉; 刘冬月
Original assignee: BEIJING ESD POWER COMMUNICATIONS Co Ltd
Current assignee: BEIJING ESD POWER COMMUNICATIONS Co Ltd
Priority date: 2010-09-10
Filing date: 2010-09-10
Publication date: 2011-03-16
Anticipated expiration: 2020-09-10

Abstract

The utility model discloses a three-phase electric energy meter which is a guide rail installed three-phase electric energy meter, comprising a collecting module for collecting voltages and currents, a calculating module performing inner sampling calculation for the collected voltages and currents, a data processing module for obtaining sampling results and processing the sampling results, a clock module containing a perpetual calendar, a storage module for storing system parameters and electric energy, a communication module performing information transmission with an upper computer and using the half-duplex RS485 communication manner, an OLED display module for displaying data and parameters and a power module for supplying power to the modules. Advantageously, automatic meter reading function of the upper computer can be realized by using RS485 communication manner in the utility model; a temperature range and a visual angle width can be display clearly by OLED technology; the display resolution ratio is 128*64dpi; the human-computer interface is friendly and the displayed content is clear; the calculation precision is high; the three-phase electric energy meter has a data power-outage storing function and good electromagnetic compatibility (EMC) performance.

Description

Three-phase electric energy meter

Technical field

The utility model relates to a kind of electric energy meter, particularly relates to a kind of novel three-phase electrical energy meter mounted in guide rail form.

Background technology

In the three-phase electric energy metering instrument, mainly comprise two kinds of forms at present: (1) embedded installation three-phase electric energy meter; (2) wall-hanging is installed three-phase electric energy meter; Wherein, embedded installation three-phase electric energy meter can and other controller switching equipment install together, but it need perforate separately on switch cabinet panel, and wiring is also very inconvenient; It then is to install on switch cabinet panel that wall-hanging is installed three-phase electric energy meter, wiring inconvenience is installed, overall cost is high and influences the layout of whole panel box and attractive in appearance.

Therefore, existing electric energy measurement instrument is because the restriction of himself volume and structure, make it not to be installed in the terminal distribution box to direct convenience or in the cabinet, and in the distribution design and construction, except that needs configurating terminal panel box or cabinet, also need extra configuration again that the ammeter cabinet of electric energy meter is installed, obviously further caused the difficulty of distribution construction and the significantly increase of cost like this.

To sum up state, how solving present electric energy meter mounting means causes the ammeter cabinet to take up room big and not attractive in appearance and the work inconvenience of checking meter, maintenance difficulties is big, is difficult for realizing shortcomings such as electric power integrated design, management, has become industry research personnel problem demanding prompt solution.

The utility model content

Problem based on the prior art existence, fundamental purpose of the present utility model is to provide a kind of employing OLED (Organic Electroluminesence Display, organic electric laser shows) technology, man-machine interface close friend, has the data wheel display function, and precision height, EMC are functional, can be installed in panel box with miniature circuit breaker or other controller switching equipment, and the three-phase electric energy meter of guide tracked installation.

To achieve these goals, the utility model has adopted following technical proposals:

Described three-phase electric energy meter comprises the acquisition module that voltage and current is gathered, the voltage and current of gathering is carried out the computing module that inner sampling is calculated, obtain sampling result of calculation and to its data processing module of handling, include the clock module of perpetual calendar, the memory module of stores system parameters and electricity, carry out information transmission with host computer and adopt the communication module of half-duplex RS 485 communication modes, OLED display module that data and parameter are shown and the power module that each module is powered; Wherein, described computing module links to each other with acquisition module, and described data processing module is connected with computing module, clock module, memory module, communication module and OLED display module respectively.

In addition, the utility model comprises that also this button is connected in described data processing module in order to the button of data query, parameter query, parameter setting and system operation.

Described acquisition module comprises voltage acquisition unit and current acquisition unit.

Described power module comprises the bypass power supply unit of communication module power supply and the SPU that acquisition module, computing module, data processing module, clock module, memory module and OLED display module are powered.

Three-phase electric energy meter described in the utility model has the following advantages:

1) adopt the RS485 communication modes, host computer can be realized automatic meter-reading;

2) adopt the OLED technology, clear display, temperature range and visual angle are wide, and the display resolution of 128*64dpi, man-machine interface close friend, displaying contents comes into plain view;

3) computational accuracy height has data power down hold function, and has good EMC performance.

Description of drawings

Fig. 1 is the functional block diagram of three-phase electric energy meter described in the utility model;

Fig. 2 is a three-phase electric energy meter front elevation described in the utility model;

Fig. 3 is the linear connected mode synoptic diagram of three-phase electric energy meter described in the utility model and upper machine communication;

Fig. 4 is the annular connected mode synoptic diagram of three-phase electric energy meter described in the utility model and upper machine communication.

Embodiment

Come three-phase electric energy meter described in the utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment.

Three-phase electric energy meter described in the utility model is a kind of three-phase electrical energy meter mounted in guide rail form, it adopts OLED to show, can carry out settings such as clock, tariff period, has the electrical energy pulse output function, and can realize exchanges data by RS485 communication interface and host computer, greatly facilitate the automatic management of electricity consumption, and can be installed in the panel box of terminal, have high computational accuracy and good EMC performance, can be widely used in occasions such as building, market, conference and exhibition center, school, airport, harbour and factory.

Shown in Fig. 1 and Fig. 2, described three-phase electric energy meter comprises acquisition module 11, computing module 12, data processing module 13, clock module 14, memory module 15, communication module 16, OLED display module 17 and power module 18; Wherein, described computing module 12 links to each other with acquisition module 11, and described data processing module 13 is connected with computing module 12, clock module 14, memory module 15, communication module 16 and OLED display module 17 respectively.

Described acquisition module 11 comprises 110 yuan of voltage acquisition lists and current acquisition unit 111, and it is mainly in order to gather voltage and current.

After described computing module 12 gets access to the voltage and current signal, active power, the instantaneous active power of electrical network consumption obtained active energy to time integral, further produce the electrical energy pulse output signal by this active energy again.During practical application, this computing module 12 can adopt computation chip ATT7022B, and described electrical energy pulse directly drives optocoupler through ATT7022B, thereby realizes the pulse output that photoelectricity is isolated.

Described data processing module 13 is in order to read results such as voltage, electric current, power, electric energy in described computing module 12, and the electrical energy pulse output signal to input adds up, handles, and handle the back according to the data in the real-time clock module 14, electric quantity data is preserved operation respectively and advanced demonstration by described OLED display module 17.

During described clock module 14 practical applications, can adopt the PCF8563 chip, comprise perpetual calendar in it, and with described data processing module 13 for adopting I ²The C bus communication.

Described memory module 15 is in order to storing systematic parameter and electricity, and adopts the spi bus communications with described data processing module 13.In the practical application, this memory module 15 adopts ferroelectric memory FM25C160 chip, and it need not to use reserve battery, belong to nonvolatile random access memory (Non-VolatileRandom Access Memory, NVRAM), the read-write number of times is fast, near unlimited reading-writing life-span.

Described communication module 16 adopts semiduplex RS485 communication modes, it is provided with RS485 interface and host computer and carries out integrated, networking and the intelligent management of exchanges data to realize electric energy metrical, can carry out networking to a plurality of three-phase electric energy meters by this communication module 16.

Shown in Fig. 3 and Fig. 4, during actual networking, can be by connector SHLD and impedance matching resistance R with several three-phase electric energy meters with linear connected mode networking, be connected to computer communication port by the RS232/RS485 converter after the networking; Equally also can by connector SHLD with some three-phase electric energy meters with annular connected mode networking, be connected to computer communication port by the RS232/RS485 converter after the networking.

Described OLED display module 17 adopts the OLED display technique data such as electric energy to be shown this kind technology need not backlight, adopts extremely thin coating of organic material and glass substrate usually, and when electric current passed through, these organic materials will be luminous.Adopt the screen of OLED technology can do lighter and thinnerly, visible angle is bigger, and can significantly save electric energy, with traditional lcd technology, it has, and ultralight is thin, high brightness, wide viewing angle, autoluminescence, response speed are fast, adaptive temperature wide ranges, antidetonation advantage strong and low in energy consumption.

During practical application, referring to shown in Figure 2, described OLED display module 17 is arranged on the housing front of novel three-phase electric energy meter, by default, can circulate demonstration time, date, the current moving state of power direction, load condition, decompression state, Qian, communication state, total electric weight, sharp electric weight, peak electric weight, ordinary telegram amount and paddy electric weight relevant information of three-phase electric energy meter described in the utility model.

Described power module 18 comprises the bypass power supply unit 181 of communication module 16 power supplies and the SPU 180 that acquisition module 11, computing module 12, data processing module 13, clock module 14, memory module 15 and OLED display module 17 are powered; Wherein, described bypass power supply unit 181 and described SPU 180 are exported the 5V operating voltage respectively, and described communication module 16 uses optocoupler to carry out electrical isolation with data processing module 13 communications.

In addition, shown in Fig. 1 and Fig. 2, also be provided with button 19 on the housing front of described three-phase electric energy meter and below being positioned at the OLED display module, this button 19 links to each other with described data processing module 13, is realized the identification and the dither functions of button by data processing module 13.By this button 19, the user can realize operations such as data query, parameter query, parameter setting and system operation easily.

The above only is the preferred implementation of this patent, and the protection domain of this patent also not only is confined to the foregoing description, and all technical schemes that belongs under this patent thinking all belong to the protection domain of this patent.Should be pointed out that the those of ordinary skill for this patent, in the some improvements and modifications that do not break away under this patent principle prerequisite, these improvements and modifications also should be considered as the protection domain of this patent.

Claims

1. three-phase electric energy meter, it is characterized in that, comprise acquisition module that voltage and current is gathered, to the voltage and current of gathering carry out computing module that inner sampling calculates, obtain sampling result of calculation and carry out information transmission and adopt the communication module of half-duplex RS 485 communication modes to the memory module of its data processing module of handling, the clock module that includes perpetual calendar, stores system parameters and electricity, with host computer, the OLED display module that data and parameter are shown and the power module that each module is powered; Wherein, described computing module links to each other with acquisition module, and described data processing module is connected with computing module, clock module, memory module, communication module and OLED display module respectively.

2. according to the described three-phase electric energy meter of claim 1, it is characterized in that, comprise that also this button is connected in described data processing module in order to the button of data query, parameter query, parameter setting and system operation.

3. according to the described three-phase electric energy meter of claim 1, it is characterized in that described acquisition module comprises voltage acquisition unit and current acquisition unit.

4. according to the described three-phase electric energy meter of claim 1, it is characterized in that described power module comprises the bypass power supply unit of communication module power supply and the SPU that acquisition module, computing module, data processing module, clock module, memory module and OLED display module are powered.