CN201876492U - Three-phase multifunctional watt-hour meter installed based on guideway - Google Patents

Three-phase multifunctional watt-hour meter installed based on guideway Download PDF

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Publication number
CN201876492U
CN201876492U CN2010205070169U CN201020507016U CN201876492U CN 201876492 U CN201876492 U CN 201876492U CN 2010205070169 U CN2010205070169 U CN 2010205070169U CN 201020507016 U CN201020507016 U CN 201020507016U CN 201876492 U CN201876492 U CN 201876492U
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China
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module
phase
chip
electrical energy
electric energy
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Expired - Lifetime
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CN2010205070169U
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Chinese (zh)
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姜龙
金安国
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Acrel Co Ltd
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Shanghai Acrel Co Ltd
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Abstract

The utility model relates to a three-phase multifunctional watt-hour meter installed based on a guideway, comprising an external component and an internal component, wherein the internal component comprises an electric energy measuring chip, a main control chip, a real-time clock chip, a memory module, a communication module, a voltage signal collecting module, a current signal collecting module, a display module, a power supply module, a pulse output module, a key input module and an LED (light-emitting diode) indicator module; the power module is connected with the main control chip, the electric energy measuring chip and the communication module respectively; the electric energy measuring chip is connected with the voltage signal collecting module, the current signal collecting module and the electric energy pulse output module respectively; and the main control chip is connected with the electric energy measuring chip, the real-time clock chip, the communication module, the memory module, the display module, the key input module and the LED (light-emitting diode) indicator lamp respectively. Compared with the prior art, the three-phase multifunctional watt-hour meter has the advantages of small volume, convenience in installation, simpleness in wiring, and the like.

Description

A kind of three-phase multifunctional electrical energy meter based on guide tracked installation
Technical field
The utility model relates to a kind of electric energy meter, especially relates to a kind of three-phase multifunctional electrical energy meter based on guide tracked installation.
Background technology
At present, three-phase multifunctional electrical energy meter, substantially all be wall-hanging and embedded two kinds of structures, wall-hanging three-phase multifunctional electrical energy meter not only volume is big, also need other to cause a large amount of wastings of resources by the power distributing meter case during installation, embedded three-phase multifunctional table adopts panel type to install, so cause wiring very inconvenient, when the terminal electric energy metrical, more can't install in the ammeter box.
Summary of the invention
The purpose of this utility model is exactly to provide a kind of volume small and exquisite in order to overcome the defective that above-mentioned prior art exists, and is easy for installation, and wiring is simply based on the three-phase multifunctional electrical energy meter of guide tracked installation.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of three-phase multifunctional electrical energy meter based on guide tracked installation is characterized in that, comprises external module, intraware;
Described external module comprises housing and is arranged on the guide-track groove and the elastic fastening hook of back side of shell, and elastic fastening hook is stuck in guide-track groove on the guide rail in the power distribution cabinet;
Described intraware comprises electric energy computation chip, main control chip, real-time timepiece chip, memory module, communication module, the voltage signal acquisition module, the current signal acquisition module, display module, power module, pulse output module, keyboard input module and LED lamp indicating module, described power module respectively with main control chip, electric energy computation chip, communication module connects, described electric energy computation chip respectively with the voltage signal acquisition module, current signal acquisition module and electrical energy pulse output module connect, described main control chip respectively with electric energy computation chip, real-time timepiece chip, communication module, memory module, display module, keyboard input module, LED lamp indicating module connects.
The width of this electric energy meter is the integral multiple of master die numerical value, is generally 7 times of master die numerical value.
The front of described housing is provided with LCD LCDs, active energy pulse pilot lamp, reactive energy pulse pilot lamp, alarm lamp, phase sequence mistake pilot lamp, decompression status indicator lamp, sharp tariffs on electricity pilot lamp, peak tariffs on electricity pilot lamp, ordinary telegram rate pilot lamp, paddy tariffs on electricity pilot lamp, button load button, lead sealing panel.Alarm lamp, phase sequence mistake pilot lamp, decompression status indicator lamp, active energy pulse pilot lamp, reactive energy pulse pilot lamp are positioned at the upper right corner of housing; Described sharp tariffs on electricity pilot lamp, peak tariffs on electricity pilot lamp, ordinary telegram rate pilot lamp, paddy tariffs on electricity pilot lamp are positioned at the lower left corner of housing.The button part is made up of SET button, last button, knob down, Enter button.The lead sealing panel is made up of two transparent covers that are embedded in mutually in the housing, can protect unwarranted wiring operation in the housing lead sealing together.Housing is provided with standard 485 communication interfaces, can realize that several guide tracked installation three-phase multifunctional electrical energy meters carry out networking.
Described pulse output module comprises meritorious electrical energy pulse output unit, reactive energy pulse output unit, time clock output unit.And reactive energy pulse and time clock shared port, a flexible configuration as required.
Described electric energy computation chip comprises ATT7022B chip, impulse generator, described ATT7022B chip is connected with impulse generator, described ATT7022B chip is connected with voltage signal acquisition module, current signal acquisition module respectively, and described impulse generator is connected with pulse output module.
Described main control chip is the MC9S08LG32 single-chip microcomputer.
Described memory module is FM24C 16 FeRAM memory chip.
Described real-time timepiece chip is the RX-8025 clock chip.
Described power module comprises A phase linear transformer, B phase linear transformer, C phase linear transformer, A commutating phase filtering circuit, B commutating phase filtering circuit, C commutating phase filtering circuit, first power management chip, A phase half-wave rectification diode, B phase half-wave rectification diode, C phase half-wave rectification diode, the second source managing chip, described A phase linear transformer respectively with A commutating phase filtering circuit, A phase half-wave rectification diode connects, described B phase linear transformer respectively with B commutating phase filtering circuit, B phase half-wave rectification diode connects, described C phase linear transformer respectively with C commutating phase filtering circuit, C phase half-wave rectification diode connects, described A commutating phase filtering circuit, B commutating phase filtering circuit, C commutating phase filtering circuit is connected with first power management chip respectively, described A phase half-wave rectification diode, B phase half-wave rectification diode, C phase half-wave rectification diode is connected with the second source managing chip respectively.
Described voltage signal acquisition module comprises ferrite bean, voltage dependent resistor (VDR), thermistor, resistance networking bleeder circuit.
Described current signal acquisition module comprises current transformer, first sample resistance, second sample resistance, resistance capacitance anti-aliasing filter circuit.
Described communication module is 485 communication interfaces of standard.
Described display module is that wide temperature range type segment code type LCD shows.
Described pulse output module is light-coupled isolation, the output of passive type open collector.
Described keyboard input module is the mechanical type spring-loaded pushbutton.
Described LED lamp indicating module is that diameter is the light emitting diode of 3mm, and wherein said alarm lamp, phase sequence mistake pilot lamp, decompression status indicator lamp, active energy pulse pilot lamp, reactive energy pulse pilot lamp are red; Described sharp tariffs on electricity pilot lamp, peak tariffs on electricity pilot lamp, ordinary telegram rate pilot lamp, paddy tariffs on electricity pilot lamp are green.
Compared with prior art, the utlity model has following advantage:
1, volume is small and exquisite, and is easy for installation, and wiring is simple, can conveniently realize the integrated design of electric energy metrical, centralized management;
2, can directly the three-phase multifunctional table be stuck on the 35mm standard guide rail that has now in the power distribution cabinet with elastic fastening hook and guide-track groove, be installed in the panel box of various models with miniature circuit breaker or other controller switching equipments, realize enterprise and institution and public building internal electric energy metering examination and management.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is an external module front elevation of the present utility model;
Fig. 3 is an external module left view of the present utility model;
Fig. 4 is the circuit diagram of power module of the present utility model;
Fig. 5 is the circuit diagram of voltage signal acquisition module of the present utility model;
Fig. 6 is the circuit diagram of current signal acquisition module of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Embodiment
As shown in Figure 1, a kind of three-phase multifunctional electrical energy meter based on guide tracked installation comprises external module, intraware; Described external module comprises housing and is arranged on the guide-track groove and the elastic fastening hook of back side of shell, and elastic fastening hook is stuck in guide-track groove on the guide rail in the power distribution cabinet; Described intraware comprises electric energy computation chip 2, main control chip 1, real-time timepiece chip 5, memory module 4, communication module 3, voltage signal acquisition module 10, current signal acquisition module 11, display module 6, power module 7, pulse output module 12, keyboard input module 8 and LED lamp indicating module 9, described power module 7 respectively with main control chip 1, electric energy computation chip 2, communication module 3 connects, described electric energy computation chip 2 respectively with voltage signal acquisition module 10, current signal acquisition module 11 and pulse output module 12 connects, described main control chip 1 respectively with electric energy computation chip 2, real-time timepiece chip 5, communication module 3, memory module 4, display module 6, keyboard input module 8, LED lamp indicating module 9 connects.
As Fig. 2, shown in Figure 3, external module comprises housing 100, elastic fastening hook 120, guide-track groove 130, LCD LCDs 101, alarm lamp 102, phase sequence pilot lamp 103, decompression pilot lamp 104, active energy pulse pilot lamp 105, reactive energy pulse pilot lamp 106, sharp tariffs on electricity pilot lamp 107, peak tariffs on electricity pilot lamp 108, ordinary telegram rate pilot lamp 109, paddy tariffs on electricity pilot lamp 110, SET button 111, goes up button 112, knob down 113, Enter ammonium button 114; Described guide-track groove 130, elastic fastening hook 120 are arranged on the reverse side of housing; Described LCD LCDs 101, alarm lamp 102, phase sequence pilot lamp 103, decompression pilot lamp 104, active energy pulse pilot lamp 105, reactive energy pulse pilot lamp 106, sharp tariffs on electricity pilot lamp 107, peak tariffs on electricity pilot lamp 108, ordinary telegram rate pilot lamp 109, paddy tariffs on electricity pilot lamp 110, SET button 111, last button 112, knob down 113, Enter ammonium button 114 are arranged on the front of housing.This guide tracked installation three-phase multifunctional electrical energy meter designs according to the modularization standard of miniature circuit breaker, its width is preferably 7 times into master die numerical value, master die numerical value is 18mm, can be installed on the 35mm guide rail of standard with little isolating switch and other electric control appliances.
As shown in Figure 4, power module 7 comprises A phase linear transformer T1, B phase linear transformer T2, C phase linear transformer T3, connect A commutating phase filtering circuit 311, B commutating phase filtering circuit 321, C current rectifying and wave filtering circuit 331 respectively, form three independently power circuits, three power circuits are connected power supply with first power management chip 300 respectively.First power management chip 300, second source managing chip 301 are given main control chip, communication module and electric energy computation chip power supply.A phase linear transformer T1, B phase linear transformer T2, C phase linear transformer T3, connect half-wave rectification diode V1, V2, V3 respectively, form three independently power circuits with half-wave rectification diode V1, V2, V3, three power circuits are connected power supply with second source managing chip 301 respectively.
As shown in Figure 5, voltage signal acquisition module 10 comprises ferrite bean, voltage dependent resistor (VDR), thermistor, resistor network bleeder circuit, the input termination three-phase voltage signal of described ferrite bean, higher hamonic wave to electrical network is filtered, the input end of described ferrite bean is by the input end of voltage dependent resistor (VDR), thermistor connecting resistance network bleeder circuit, and precision resistance RA2, RA3 form the voltage signal acquisition mouth of the voltage signal of 100 millivolts of potential-divider network outputs to electric energy computation chip.REFO is the reference signal input end, provides reference signal by resistance R 4, R5 for voltage signal acquisition.Capacitor C 1, C2 filtering interference signals guarantee the stable of input signal; The voltage signal that collects is exported by V2N, V2P.
As shown in Figure 6, current signal acquisition module 11 comprises current transformer 400, the first sample resistance Rb, the second sample resistance Rc, resistance capacitance anti-aliasing filter circuit.The primary side input three-phase current signal of described current transformer 400, secondary side exports the current signal acquisition port of electric energy computation chip to by the first sample resistance Rb, the second sample resistance Rc connecting resistance Xc aliasing filtering circuit fully differential, and by capacitor Ca, Cb the angular difference of current transformer 400 is effectively mended and to be tasted.
Connect a reference signal input end REFO between the first sample resistance Rb, the second sample resistance Rc, connect a reference signal input end REFO between capacitor Ca, the Cb.The current signal that collects is exported by V1N, V1P.

Claims (10)

1. the three-phase multifunctional electrical energy meter based on guide tracked installation is characterized in that, comprises external module, intraware;
Described external module comprises housing and is arranged on the guide-track groove and the elastic fastening hook of back side of shell, and elastic fastening hook is stuck in guide-track groove on the guide rail in the power distribution cabinet;
Described intraware comprises electric energy computation chip, main control chip, real-time timepiece chip, memory module, communication module, the voltage signal acquisition module, the current signal acquisition module, display module, power module, pulse output module, keyboard input module and LED lamp indicating module, described power module respectively with main control chip, electric energy computation chip, communication module connects, described electric energy computation chip respectively with the voltage signal acquisition module, current signal acquisition module and electrical energy pulse output module connect, described main control chip respectively with electric energy computation chip, real-time timepiece chip, communication module, memory module, display module, keyboard input module, LED lamp indicating module connects.
2. a kind of three-phase multifunctional electrical energy meter based on guide tracked installation according to claim 1 is characterized in that the width of this electric energy meter is the integral multiple of master die numerical value.
3. a kind of three-phase multifunctional electrical energy meter according to claim 1 based on guide tracked installation, it is characterized in that the front of described housing is provided with LCD LCDs, active energy pulse pilot lamp, reactive energy pulse pilot lamp, alarm lamp, phase sequence mistake pilot lamp, decompression status indicator lamp, sharp tariffs on electricity pilot lamp, peak tariffs on electricity pilot lamp, ordinary telegram rate pilot lamp, paddy tariffs on electricity pilot lamp, button load button, lead sealing panel.
4. a kind of three-phase multifunctional electrical energy meter based on guide tracked installation according to claim 1 is characterized in that, described pulse output module comprises meritorious electrical energy pulse output unit, reactive energy pulse output unit, time clock output unit.
5. a kind of three-phase multifunctional electrical energy meter according to claim 1 based on guide tracked installation, it is characterized in that, described electric energy computation chip is the ATT7022B chip, and described ATT7022B chip is connected with voltage signal acquisition module, current signal acquisition module, pulse output module respectively.
6. a kind of three-phase multifunctional electrical energy meter based on guide tracked installation according to claim 1 is characterized in that described main control chip is the MC9S08LG32 single-chip microcomputer.
7. a kind of three-phase multifunctional electrical energy meter according to claim 1 based on guide tracked installation, it is characterized in that, described power module comprises A phase linear transformer, B phase linear transformer, C phase linear transformer, A commutating phase filtering circuit, B commutating phase filtering circuit, C commutating phase filtering circuit, first power management chip, A phase half-wave rectification diode, B phase half-wave rectification diode, C phase half-wave rectification diode, the second source managing chip, described A phase linear transformer respectively with A commutating phase filtering circuit, A phase half-wave rectification diode connects, described B phase linear transformer respectively with B commutating phase filtering circuit, B phase half-wave rectification diode connects, described C phase linear transformer respectively with C commutating phase filtering circuit, C phase half-wave rectification diode connects, described A commutating phase filtering circuit, B commutating phase filtering circuit, C commutating phase filtering circuit is connected with first power management chip respectively, described A phase half-wave rectification diode, B phase half-wave rectification diode, C phase half-wave rectification diode is connected with the second source managing chip respectively.
8. a kind of three-phase multifunctional electrical energy meter based on guide tracked installation according to claim 1 is characterized in that, described voltage signal acquisition module comprises ferrite bean, voltage dependent resistor (VDR), thermistor, resistance networking bleeder circuit.
9. a kind of three-phase multifunctional electrical energy meter based on guide tracked installation according to claim 1 is characterized in that, described current signal acquisition module comprises current transformer, first sample resistance, second sample resistance, resistance capacitance anti-aliasing filter circuit.
10. a kind of three-phase multifunctional electrical energy meter based on guide tracked installation according to claim 1 is characterized in that, described communication module is 485 communication interfaces of standard.
CN2010205070169U 2010-08-25 2010-08-25 Three-phase multifunctional watt-hour meter installed based on guideway Expired - Lifetime CN201876492U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106370905A (en) * 2016-08-29 2017-02-01 新开普电子股份有限公司 Active watt-hour meter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106370905A (en) * 2016-08-29 2017-02-01 新开普电子股份有限公司 Active watt-hour meter

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C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee
CP01 Change in the name or title of a patent holder

Address after: 201801 Jiading District Green Road, No. 253, Shanghai

Patentee after: ACREL CO., LTD.

Address before: 201801 Jiading District Green Road, No. 253, Shanghai

Patentee before: Shanghai Acrel Electric Co., Ltd.

CX01 Expiry of patent term

Granted publication date: 20110622

CX01 Expiry of patent term