CN101452636A - Communication interface for multifunctional electrical energy meter - Google Patents
Communication interface for multifunctional electrical energy meter Download PDFInfo
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- CN101452636A CN101452636A CNA2007101784533A CN200710178453A CN101452636A CN 101452636 A CN101452636 A CN 101452636A CN A2007101784533 A CNA2007101784533 A CN A2007101784533A CN 200710178453 A CN200710178453 A CN 200710178453A CN 101452636 A CN101452636 A CN 101452636A
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Abstract
The invention discloses a communication interface for a multifunctional electric energy meter, which comprises a socket part which is positioned on the multifunctional electric energy meter side, and a contact pin part which is positioned on the communication module side, and is provided with 24 pins, wherein the 24 pins comprise power pins and communication pins; the power pins comprise working power supply pins, serial port power supply pins and optical coupling power supply pins; and the communication pins comprise signal transmitting pins and signal receiving pins. The invention forms the unified communication interface between the multifunctional electric energy meter and a communication module, realizes interchangeability of the communication module and openness of a platform, unifies verification method and procedures and test method and procedures, and is suitable for batch inspection and operation maintenance.
Description
Technical field
The present invention relates to the power technology field, relate more specifically to a kind of communication interface that is used for multifunctional electric energy meter.
Background technology
Be accompanied by the very fast progress of the demand for development of Marketing of Power Market management and modern electronic technology, mechanics of communication, computer networking technology, electric energy meter automatic data logging technology develops rapidly, the domestic multiple electric energy meter that now appeared on the market with remote collection function, but, caused the inconvenience of Utilities Electric Co. in purchasing, detect, install and safeguarding owing to lack unified interface standard.
Electric energy meter with acquisition function generally is made up of multifunctional electric energy meter and communication module two parts, links by communication interface between multifunctional electric energy meter and the communication module.
Wherein, multifunctional electric energy meter is made up of current transformer, high-precision high-speed analog to digital converter, computation chip, measuring control microprocessor, real-time clock, data interface unit and human interface device.The high-precision high-speed analog to digital converter is used for the voltage dividing potential drop; It is digital signal that current transformer is used for analog signal conversion, and it is carried out the digital integration computing, thereby accurately obtains meritorious electric weight and capacity of idle power; Microprocessor is used for according to requirements such as corresponding rate and requirements data being handled, and its result is kept in the data-carrier store, and information is provided and carries out exchanges data to external interface at any time.
Communication module generally adopts 32-bit microprocessor (Micro Controller Unit, be called for short MCU) and embedded OS scheme, 32 high speed MCU are responsible for communication dispatch, the task management of checking meter, abnormality detection, initiatively report, protocol analysis, storage administration, reach work such as state indication; High-capacity flash memory (Flash) is responsible for data storage.Communication module is embedded with various communication linkage softwares (for example, TCP/IP, UDP, PPP etc.); The GPRS/CDMA communication module is used to finish network service work.
Existing product is modular design in manufacturer inside, but from user's angle, does not reach the requirement of modular design in fact at aspects such as inner principle, design of hardware and software, interface protocols, mainly shows following three aspects:
One, the hardware interface of communication module and base table (that is multifunctional electric energy meter) is lack of standardization
Because the ununified standard of the hardware interface between base table and the communication module is so can not realize the exchange of communication module.For example, the contact pin figure place disunity of interface, thereby it is inconsistent to give the function of each contact pin, does not have clear and definite pilot lamp display definition (not stipulate the flicker frequency of various status indicator lamps, frequency during such as the unlike signal strength grade), base table and the shared standby power supply of communication module etc.
Two, the software protocol disunity of communication module and base table
Hardware interface between base table and the communication module does not have modular unified standard.645 stipulations are used in communication between base table and the communication module, but the additional communication protocol that each producer uses is inconsistent, thereby have limited the exchange of communication module from communications protocol.And, along with developing rapidly of the communication technology, alternative channel more and more (CDMA1X check meter network, telephone reading meter data network, 430M near radio check meter network, Ethernet, 3G in the future etc.), if there is not unified interface standard, communication module will be very difficult in the replacing of multiple interchannel.
Three, the function of communication module is inconsistent
The function design of communication module does not reach modular requirement.Show mainly that measure dot number and freezing data kind are inconsistent, retransmission protocol form, parameter configuration means disunity, different configuration interfaces of each producer and agreement, have and transmit by table meter RS485, have by the module serial ports directly configuration, self-defined configuration parameter agreement for convenience arranged, have according to GB, form is variation too, for detecting and factory set parameter brings difficulty.
Situation from present home products, all with " modularization " as design concept, present but " modularization " is meant between the communication module of different communication passage of base table that a company produces and its production and realizes exchanging, all be in the understanding scope of its company, to carry out project to carry out, lack unified technical indicator and embodiment, this " modularization " do not realize the base table of different manufacturers and the unification and the intercommunication exchange of communication module in production reality, thereby brought detection, install, a series of problems such as maintenance, the cost that has directly increased operation and used.
Summary of the invention
The objective of the invention is to, a kind of new communication interface that is used for multifunctional electric energy meter is provided, be used for the interchangeability of the communication module of multifunctional electric energy meter with realization.
According to the communication interface that is used for multifunctional electric energy meter of the embodiment of the invention, the contact pin part that comprises the socket part that is positioned at the multifunctional electric energy meter side and be positioned at the communication module side has 24 pins.Wherein, comprise the power pin and the pin of communicating by letter in these 24 pins.Power pin comprises working power pin, serial ports power pin and optocoupler power pin.The communication pin comprises that signal sends pin and signal receives pin.
Wherein, the working power pin takies 6 pins.The serial ports power pin takies 4 pins.The optocoupler power pin takies 2 pins.Wherein, these 24 pins distribute with the form of 12 row, 2 row.The working power pin takies the position of the 5th row, the 6th row the 1st row, the 7th row the 2nd row and eighth row; The serial ports power pin takies the position of the 11st row, the 12nd row; The optocoupler power pin takies the position of the 4th row.When the input voltage of communication interface is in single-phase 85%Un～three-phase 120%Un working range; the output voltage of communication interface is DC11V～28V; output power is not less than 4W; filter capacitor is not less than 6600uF after the transformer output rectification; overcurrent protection is arranged; mustn't protect below the 400mA, 1000mA must protect in above 60 seconds.The AC2000V that communicates by letter between working power pin and the electric current and voltage terminal and with RS485 between the power supply is withstand voltage.When the power supply of the external DC5.0V ± 100mV of communication interface, 40mA, the serial ports power pin is used to connect RS485 interface power supply and is used for the switching value input and detects.Between serial ports power pin and the electric current and voltage terminal and withstand voltage with the AC2000V that communicates by letter between the power supply.The optocoupler power pin connects the communication power supply of 3.3V, DC10mA.The optocoupler power pin is connected with 20 ohm resistance, is used to drive described communication module.
Wherein, signal sends pin and takies 2 pins.Signal receives pin and takies 2 pins.Signal sends the position that pin takies the 3rd row, and signal receives the position that pin takies the 2nd row.The communication pin adopts the half duplex communication mode of Transistor-Transistor Logic level.The baud rate of communication pin is fixed as 19200bps, 1 start bit, 8 bit data positions, 1 digit pair check bit, 1 position of rest.
In addition, also comprise anomalous event response pin in these 24 pins.When having anomalous event to take place, to the generation of communication module report anomalous event, inquire about anomalous event by the request communication module in 30 seconds for anomalous event response pin.Before the communication module inquiry finished, the current potential of anomalous event response pin was low, and after the communication module inquiry finished, the current potential of anomalous event response pin was high.
The present invention has formed the uniform communication interface between multifunctional electric energy meter and the communication module, has realized the interchangeability of communication module and the opening of platform, has unified calibrating, method of testing and step, is fit to batch detection, operation maintenance.In addition, the present invention supports multiple meter reading method coexistence (for example, RS-485, RS-232, infrared, GPRS, CDMA, 433M radio communication, power line carrier, PLC, wire-telephony, ethernet communication, 3G etc.).
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the front elevation according to the socket part of the communication interface that is used for multifunctional electric energy meter of the embodiment of the invention;
Fig. 2 is the row's pin dimensional drawing according to the contact pin part of the communication interface that is used for multifunctional electric energy meter of the embodiment of the invention;
Fig. 3 is the design drawing according to the communication pin of the communication interface that is used for multifunctional electric energy meter of the embodiment of the invention; And
Fig. 4 is the design drawing according to the anomalous event response pin of the communication interface that is used for multifunctional electric energy meter of the embodiment of the invention.
Embodiment
The present invention proposes on the basis of fully investigation domestic prior art, product and application.Below with reference to accompanying drawing, describe the specific embodiment of the present invention in detail.
The contact pin part that comprises the socket part that is positioned at the multifunctional electric energy meter side and be positioned at the communication module side according to the communication interface that is used for multifunctional electric energy meter of the embodiment of the invention.With reference to figure 1, the communication interface that is used for multifunctional electric energy meter according to the embodiment of the invention is described.
As shown in Figure 1, the communication interface according to the embodiment of the invention has 24 pins.Comprise the power pin and the pin of communicating by letter in these 24 pins.
Wherein, power pin comprises following pin:
Working power pin (comprising DCMOD and GND pin).Wherein, the DCMOD pin takies pin 9,10, No. 11, and the GND pin takies pin 14,15, No. 16.The function of working power pin is: when input voltage is (in single-phase 85%Un～three-phase 120%Un working range); the output voltage of communication interface is DC11V～28V; output power is not less than 4W; filter capacitor is not less than 6600uF after the transformer output rectification; overcurrent protection is arranged; mustn't protect below the 400mA, must protection in the above 60S of 1000mA.And AC2000V is withstand voltage between the electric current and voltage terminal, and the AC2000V that communicates by letter with RS485 between the power supply is withstand voltage.
Serial ports power pin (comprising RS485_DC5V and RS485_GND pin).Wherein, the RS485_DC5V pin takies pin 3, No. 4, and the RS485_GND pin takies pin 1, No. 2.The effect of serial ports power pin is: at communication module external interface part power supply (DC5.0V ± 100mV), during 40mA, be used to connect RS485 interface power supply and be used for the switching value input and detect.And AC2000V is withstand voltage between the electric current and voltage terminal, and is withstand voltage with the AC2000V that communicates by letter between the power supply.
Optocoupler power pin (that is DC3.3V pin).This pin takies pin 17, No. 18.This pin provides 3.3V power supply by communication module, DC10mA electric current, and 20 Ohmages of connecting in the communication module current supply circuit.Be used to provide the driving of the communication optocoupler of communication module.
Wherein, the communication pin comprises that signal sends pin (that is TXTXD pin) and signal receives pin (that is TXRXD pin).The TXTXD pin takies pin 19, No. 20, and the TXRXD pin takies pin 21, No. 22.TXTXD sends signal for being used for communication module, and TXRXD is used to the communication module received signal, adopts the half duplex communication mode of Transistor-Transistor Logic level (transistor-transistor logic level), baud rate is fixed as 19200bps, 1 start bit, 8 bit data positions, 1 digit pair check bit, 1 position of rest.The circuit design of communication pin as shown in Figure 3.
In addition, also comprise anomalous event response pin (that is TXEVENT pin) in 24 pins as shown in Figure 1.When having anomalous event to take place, to the generation of communication module report anomalous event, inquire about anomalous event by the request communication module in 30 seconds for anomalous event response pin.Before the communication module inquiry finished, the current potential of anomalous event response pin was low, and after the communication module inquiry finished, the current potential of anomalous event response pin was high.The circuit design of anomalous event response pin as shown in Figure 4.Other pins in 24 pins as shown in Figure 1 are empty (NULL), do non-metallic hole.
Wherein, the model of 24 core sockets of the communication interface between multifunctional electric energy meter and the communication module is 203S-Y-2 * 12P-8.5/3.2.The position of the 1st pin positions on multifunctional electric energy meter of 24 core sockets is that the lower right corner is the 1st pin.The 24 core sockets on the multifunctional electric energy meter and the unsettled pin (5,6,7,8,12,13) of 24 core contact pins on the communication module will be done non-metallic hole.The length of 24 core contact pins on the communication module is seen shown in Figure 2.Multifunctional electric energy meter and communication module communicate by letter and the optocoupler of affair alarm all is placed on the multifunctional electric energy meter, and on draw and build-out resistor all is placed on the multifunctional electric energy meter.
The above is embodiments of the invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.
Claims (10)
1. communication interface that is used for multifunctional electric energy meter, the contact pin part that comprises the socket part that is positioned at the multifunctional electric energy meter side and be positioned at the communication module side, it is characterized in that, described communication interface has 24 pins, comprise the power pin and the pin of communicating by letter in described 24 pins, described power pin comprises working power pin, serial ports power pin and optocoupler power pin, and described communication pin comprises that signal sends pin and signal receives pin.
2. communication interface according to claim 1 is characterized in that, described working power pin takies 6 pins, and described serial ports power pin takies 4 pins, and described optocoupler power pin takies 2 pins.
3. communication interface according to claim 2 is characterized in that, described 24 pins distribute with the form of 12 row, 2 row, and wherein, described working power pin takies the position of the 5th row, the 6th row the 1st row, the 7th row the 2nd row and eighth row; Described serial ports power pin takies the position of the 11st row, the 12nd row; Described optocoupler power pin takies the position of the 4th row.
4. communication interface according to claim 3; it is characterized in that; when the input voltage of described communication interface is in single-phase 85%Un～three-phase 120%Un working range; the output voltage of described communication interface is DC11V～28V; output power is not less than 4W, and filter capacitor is not less than 6600uF after the transformer output rectification, and overcurrent protection is arranged; mustn't protect below the 400mA, 1000mA must protect in above 60 seconds.
5. communication interface according to claim 4 is characterized in that, the AC2000V that communicates by letter between described working power pin and the electric current and voltage terminal and with RS485 between the power supply is withstand voltage.
6. communication interface according to claim 5 is characterized in that, when the power supply of the external DC5.0V ± 100mV of described communication interface, 40mA, described serial ports power pin is used to connect RS485 interface power supply and is used for the switching value input and detects.
7. communication interface according to claim 6 is characterized in that, between described serial ports power pin and the described electric current and voltage terminal and withstand voltage with the described AC2000V that communicates by letter between the power supply.
8. communication interface according to claim 7 is characterized in that, described optocoupler power pin connects the communication power supply of 3.3V, DC10mA, connects with 20 ohm resistance, is used to drive described communication module.
9. communication interface according to claim 8 is characterized in that, described signal sends pin and takies 2 pins, described signal receives pin and takies 2 pins, wherein, described signal sends the position that pin takies the 3rd row, and described signal receives the position that pin takies the 2nd row.
10. communication interface according to claim 9 is characterized in that, described communication pin adopts the half duplex communication mode of Transistor-Transistor Logic level, the baud rate of described communication pin is fixed as 19200bps, 1 start bit, 8 bit data positions, 1 digit pair check bit, 1 position of rest.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101784533A CN101452636B (en) | 2007-11-30 | 2007-11-30 | Communication interface for multifunctional electrical energy meter |
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| CN2007101784533A CN101452636B (en) | 2007-11-30 | 2007-11-30 | Communication interface for multifunctional electrical energy meter |
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| CN101452636A true CN101452636A (en) | 2009-06-10 |
| CN101452636B CN101452636B (en) | 2012-01-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128977A (en) * | 2010-01-20 | 2011-07-20 | 华北电网有限公司 | Single-phase watt-hour meter supporting two-way communication |
| CN108595294A (en) * | 2018-03-13 | 2018-09-28 | 中国电力科学研究院有限公司 | Multiple-in-one collecting device communication interface converter testing system and method |
| CN112598895A (en) * | 2020-11-16 | 2021-04-02 | 中国电力科学研究院有限公司 | System and method for preventing multi-channel conflict during electric energy meter verification |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5867669A (en) * | 1995-07-03 | 1999-02-02 | General Electric Company | Apparatus and method for upgrading communication functions |
| US6731201B1 (en) * | 2000-02-23 | 2004-05-04 | Robert Shaw Controls Company | Communications module and system |
| CN2433795Y (en) * | 2000-07-31 | 2001-06-06 | 广东高新兴通信设备有限公司 | Base power and environmental centralized monitoring terminal device |
| CN2793730Y (en) * | 2005-05-11 | 2006-07-05 | 南京迪玛斯电气有限公司 | Collective recording device for resident kilowatt meters |
| CN2899244Y (en) * | 2006-05-11 | 2007-05-09 | 广东中玉科技有限公司 | Field power-supply monitoring management terminal |
| CN200941646Y (en) * | 2006-08-01 | 2007-08-29 | 郑贵林 | Remote meter registering terminal based on bus-type module |
| CN200947108Y (en) * | 2006-09-14 | 2007-09-12 | 北京航空航天大学 | Single-phase electric energy meter based on internet |
-
2007
- 2007-11-30 CN CN2007101784533A patent/CN101452636B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128977A (en) * | 2010-01-20 | 2011-07-20 | 华北电网有限公司 | Single-phase watt-hour meter supporting two-way communication |
| CN108595294A (en) * | 2018-03-13 | 2018-09-28 | 中国电力科学研究院有限公司 | Multiple-in-one collecting device communication interface converter testing system and method |
| CN112598895A (en) * | 2020-11-16 | 2021-04-02 | 中国电力科学研究院有限公司 | System and method for preventing multi-channel conflict during electric energy meter verification |
| CN112598895B (en) * | 2020-11-16 | 2023-05-19 | 中国电力科学研究院有限公司 | System and method for preventing multichannel conflict during verification of electric energy meter |
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Owner name: BEIJING ELECTRIC POWER CORP. Effective date: 20121221 Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: BEIJING ELECTRIC POWER CORP. Effective date: 20121221 |
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Effective date of registration: 20121221 Address after: 100031 West Chang'an Avenue, Beijing, No. 86 Patentee after: State Grid Corporation of China Patentee after: Beijing Electric Power Corp. Address before: 100031 Beijing Qianmen West Street, Xicheng District, No. 41 Patentee before: Beijing Electric Power Corp. |