CN100490346C - Communication method of remote meter transcribing system and communication conversion module used therefor - Google Patents
Communication method of remote meter transcribing system and communication conversion module used therefor Download PDFInfo
- Publication number
- CN100490346C CN100490346C CNB031398669A CN03139866A CN100490346C CN 100490346 C CN100490346 C CN 100490346C CN B031398669 A CNB031398669 A CN B031398669A CN 03139866 A CN03139866 A CN 03139866A CN 100490346 C CN100490346 C CN 100490346C
- Authority
- CN
- China
- Prior art keywords
- communication
- circuit
- voltage power
- data
- bus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The invention is a communicating method for remote meter reading system and its communication conversion module, adopting a master/slave command communication mode and a data communication mode mixing low voltage power carrier wave with bus communication between data concentrator and each data collector, arranging communication conversion module at the mutual conversion node of communication modes, where the module is provided with bus interface and low voltage power line interface, the bus interface is connected with a MCU, the MCU is connected with carrier wave receiving and transmitting circuits, which is connected with the low voltage power line interface through output drive circuit and signal coupling circuit, the low voltage power line interface is connected with the carrier wave receiving circuit through the signal coupling circuit, filter circuit and mixing amplifier. The method can compensate bus and low voltage power line carrier wave communication modes with each other, reducing the difficulty in laying communication cables and its communication conversion module has a function of two-way transmitting low voltage carrier wave and bus communication data packet, able to realize the conversion between different communication modes.
Description
Technical field
The invention belongs to the communication transfer interface module that data communications method between a kind of resident's of being used for electric energy meter long-distance meter-reading system field apparatus and this method are used.
Background technology
Data communication is the important step in resident's electric energy meter remote auto meter reading system, the data communication between each field apparatus mainly realizes by dual mode in the long-distance meter-reading system at present: a kind of is single bus communication mode (i.e. Chang Yong RS485 bus), and a kind of is single low voltage electric power carrier communication mode.Bus mode has that speed is fast, the advantage of reliable communications, but because need to lay special line, so bring a lot of inconvenience: as when some sub-district does not allow overhead wire, when and for example bus requirements goes across the road, run into this class situation, just increased the difficulty of track laying; The low voltage electric power carrier communication mode can directly utilize low-voltage power line as communication medium, does not need to spread in addition special line, but shortcoming is the cost height, and traffic rate is slow, and success rate is low, and in the position that has because of influenced by the power supply network interference signal, can't realize communication.
Summary of the invention
The technical problem to be solved in the present invention is to overcome above-mentioned deficiency, provide a kind of and can make full use of that bus communication speed is fast, the advantage of reliable communications, can reduce the communication means of long-distance meter-reading system field apparatus of track laying difficulty and the communication transfer interface module that this method is used again.
The technical scheme that addresses the above problem is: the field apparatus of the inventive method long-distance meter-reading system comprises the data acquisition unit MRU of data concentrator FMU and some collection user electric energy meter data, it is characterized in that: the data communication mode that adopts principal and subordinate's command communication mode and low voltage electric power carrier communication to mix between described data concentrator and each data acquisition unit with bus communication, at the node place that each low voltage electric power carrier communication and bus communication mode are changed mutually, be provided with the communication transfer interface module PL of band bus interface and low-voltage power line interface, this communication transfer interface module has the function of two-way forwarding from the low-voltage power carrier to the bus interface and from the bus interface to the low-voltage power carrier to communication data packet.
The communication transfer interface module structure that the inventive method adopted is: this module is provided with bus interface and low-voltage power line interface, it is characterized in that: described bus interface circuit is connected with single-chip microcomputer, single-chip microcomputer is connected to carrier wave receiving circuit and carrier wave transtation mission circuit, the signal output part of carrier wave transtation mission circuit passes through output driving circuit, signal coupling circuit is connected with the low-voltage power line interface, the low-voltage power line interface connects filter circuit by signal coupling circuit, the filter circuit output connects the mixing input of mixing amplifying circuit with the standard carrier center frequency signal output of carrier wave receiving circuit setting, and the mixing amplification circuit output end is carried ripple receiving circuit received signal input.
When implementing the on-the-spot shop of long-distance meter-reading system lineman's journey, the inventive method according to the difference shop field of line requirement select the communication mode of bus communication mode or low-voltage power carrier flexibly, at the node place that the different communication mode is changed, finish the conversion of communication mode with the communication transfer interface module that communication data packet is had two-way forwarding capability, owing to be to adopt master-slave mode to check meter, so send the order of checking meter that contains data acquisition unit MRU address by data concentrator FMU earlier when checking meter, the data acquisition unit energy return data that has only corresponding address, other data acquisition unit of not receiving command address can return data, so can not cause the conflict of different addresses data acquisition unit transmission data.
The operation principle of communication transfer interface module of the present invention is: bus interface circuit is connected with communication bus, the low-voltage power line interface is connected with the low-voltage power line of low voltage electric network, then the communication data from the low-voltage power carrier to the communication bus is transmitted the course of work and is: from the power carrier signal of low voltage electric network through signal coupling circuit, filter circuit is input to the mixing amplifying circuit, mix with standard carrier center frequency signal from the carrier wave receiving circuit, computing, amplify, select the signal input part that the signal that contains this nominal mean frequency information is input to the carrier wave receiving circuit, the carrier wave receiving circuit carries out computing to it, be input to single-chip microcomputer after the processing such as demodulation, single-chip microcomputer carries out verification to the carrier data bag that receives, data packet discarding with check errors, the packet that verification is correct sends to communication bus by bus interface circuit, finishes from the low-voltage powerline carrier communication mode and converts the required packet forwarding of bus communication mode to; Otherwise the communication data from the communication bus to the low-voltage power carrier is transmitted the course of work: the communication data from communication bus is input to single-chip microcomputer through the communication bus interface circuit, single-chip microcomputer carries out verification to the packet that receives, data packet discarding with check errors, the packet that verification is correct sends the power carrier transtation mission circuit to, the power carrier transtation mission circuit carries out spread processing to the data from single-chip microcomputer, pass through output driving circuit then, signal coupling circuit sends on the low-voltage power line, finishes from the communication bus communication mode and converts the required packet forwarding of low voltage electric power carrier communication mode to.
The communication mode that the inventive method adopts low-voltage power carrier to mix with bus between the field apparatus of long-distance meter-reading system, can make two kinds of communication mode complementations, both made full use of fast, the reliable advantage of bus communication speed, can adopt the low-voltage power line communication mode to reduce the difficulty that communication line is laid again in necessary location, the master-slave mode communication mode that is adopted can prevent the phenomenon that different addresses data acquisition unit transmission data clash.Communication transfer interface module of the present invention has the function of two-way forwarding to low pressure carrier wave and bus communication packet, and the interference signal of energy filtering low voltage electric power carrier communication generation, and the transformation energy of different communication mode in the inventive method utilization is achieved.
Description of drawings:
Fig. 1, the inventive method embodiment schematic diagram
Fig. 2, communication transfer interface module frame principle figure of the present invention
Fig. 3, communication transfer interface module embodiment circuit diagram of the present invention
Embodiment
The inventive method embodiment (Fig. 1)
This example is provided with data concentrator FMU, its bus interface is connected with the RS485 communication bus, communication bus one tunnel directly is connected with data acquisition unit MRU, another road is connected with the bus interface of the communication transfer interface module PL485 that communication data packet is had two-way forwarding capability, module PL485 low-voltage power line interface is connected with the low-voltage power line near-end of low voltage electric network, the low-voltage power line far-end is connected with the low-voltage power line interface of several communication transfer interface module PL485, the bus interface of every communication transfer interface module is connected with several data acquisition unit bus interface by the RS485 bus, and each data acquisition unit is connected with several user's electric energy meters respectively.
This example adopts the low-voltage power line communication mode in the inconvenient location of line, shop, other parts adopt the bus communication mode, for example several data acquisition units are set at same residential building, because wiring easily in the same storied building, so the bus interface of several data acquisition units can be connected together, set up with data concentrator through low-voltage power line by a communication transfer interface module then and communicate by letter, just each communication transfer interface module is connected with many data acquisition units by bus, this terminal communication mode that mixes can be saved the quantity of using communication transfer interface module, reduce cost, adopt the master-slave mode communication mode simultaneously, promptly send the order of checking meter that contains the data acquisition unit address by data concentrator FMU, the data acquisition unit energy return data that has only appropriate address is so can not cause the conflict of data communication.
Communication transfer interface module embodiment of the present invention (Fig. 3)
The special electric power carrier transmitting-receiving chip that it is PL2000A that carrier wave receiving circuit that this is routine and carrier wave transtation mission circuit adopt a model altogether, single-chip microcomputer adopts the AT89C52 of MCS51 series, the mixing amplifying circuit adopts integrated circuit MC3361, and the RS485 bus interface circuit adopts the 65LBC184 chip.
The circuit structure of this routine communication transfer interface module is: RS485 communication interface circuit 1,4,3 pin connect single-chip microcomputer 10,11,28 pin respectively, and 14,15,13,17,16,12 pin of single chip computer AT 89C52 connect 5,6,9,8,7,4 pin of power carrier transceiving chip PL2000A respectively; Power carrier transceiving chip output pin 15 passes through by triode T2-T5 and diode D1, D2, voltage-stabiliser tube Z1, the push-pull type output driving circuit that Z2 forms and by capacitor C 7, the coupling circuit that transformer TR1 forms connects the low-voltage power line interface circuit, coupling circuit passes through by resistance R 3, inductance 12, diode D3, D4, capacitor C 5, the filter circuit that C8 forms connects the mixing amplifying circuit, the mixing amplifying circuit is made up of integrated circuit MC3361 and ceramic filter CR1 and triode T1 and peripheral Resistor-Capacitor Unit, mixing amplification circuit output end triode T1 collector electrode connects input 24 pin of power carrier transceiving chip PL2000A, power carrier transceiving chip 19 pin are standard carrier center frequency signal output, connect 1 pin of mixing amplifying circuit integrated package MC3361, this centre frequency is identical with carrier signal centre frequency in the low pressure carrier wave transtation mission circuit, mix in the mixing amplifying circuit with input signal, computing, amplify, selecting the signal that contains this center frequency information is input to the carrier wave receiving circuit and carries out computing, demodulation, be input to single-chip microcomputer again and carry out computing, verification, with the data packet discarding of check errors, the packet that verification is correct sends to communication bus by bus interface circuit.
Claims (3)
1, the communication means of long-distance meter-reading system, the field apparatus of long-distance meter-reading system comprises the data acquisition unit MRU of data concentrator FMU and some collection user electric energy meter data, it is characterized in that: the data communication mode that adopts principal and subordinate's command communication mode and low voltage electric power carrier communication to mix between described data concentrator and each data acquisition unit with bus communication, this principal and subordinate's command communication mode is promptly sent the order of checking meter that contains the data acquisition unit address by data concentrator FMU, the data acquisition unit energy return data that has only appropriate address is so can not cause the conflict of data communication; At the node place that each low voltage electric power carrier communication and bus communication mode are changed mutually, be provided with the communication transfer interface module PL of band bus interface and low-voltage power line interface, this communication transfer interface module has the function of two-way forwarding from the low-voltage power carrier to the bus interface and from the bus interface to the low-voltage power carrier to communication data packet.
2, the communication means of long-distance meter-reading system according to claim 1, it is characterized in that: adopt the terminal communication means that mixes, the bus interface that is about to several data acquisition units is connected together, and sets up with data concentrator through low-voltage power line by a communication transfer interface module then and communicates by letter.
3, the communication transfer interface module that is used for long-distance meter-reading system, be provided with bus interface and low-voltage power line interface, it is characterized in that: be provided with single-chip microcomputer in the communication transfer interface module, the carrier wave transtation mission circuit, output driving circuit, signal coupling circuit, filter circuit, the mixing amplifying circuit, the carrier wave receiving circuit, described bus interface circuit is connected with single-chip microcomputer, single-chip microcomputer is connected to carrier wave receiving circuit and carrier wave transtation mission circuit, the signal output part of carrier wave transtation mission circuit passes through output driving circuit, signal coupling circuit is connected with the low-voltage power line interface, the low-voltage power line interface connects filter circuit by signal coupling circuit, the filter circuit output connects the mixing input of mixing amplifying circuit with the standard carrier center frequency signal output of carrier wave receiving circuit setting, and the mixing amplification circuit output end is carried ripple receiving circuit received signal input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031398669A CN100490346C (en) | 2003-07-18 | 2003-07-18 | Communication method of remote meter transcribing system and communication conversion module used therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031398669A CN100490346C (en) | 2003-07-18 | 2003-07-18 | Communication method of remote meter transcribing system and communication conversion module used therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1571290A CN1571290A (en) | 2005-01-26 |
| CN100490346C true CN100490346C (en) | 2009-05-20 |
Family
ID=34470751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031398669A Expired - Fee Related CN100490346C (en) | 2003-07-18 | 2003-07-18 | Communication method of remote meter transcribing system and communication conversion module used therefor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100490346C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102104399A (en) * | 2011-01-16 | 2011-06-22 | 郭建国 | System for ensuring power line carrier communications between energy meter gateways and white information appliances |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101281214B (en) * | 2007-04-02 | 2010-05-26 | 深圳市国电科技通信有限公司 | Remote meter reading system heart-throb frame real-time detection method |
| CN101373556B (en) * | 2007-08-23 | 2012-08-01 | 瑞斯康微电子（深圳）有限公司 | Method for transmitting and receiving low pressure carrier wave centralized type network and apparatus thereof |
| CN102118184A (en) * | 2009-12-30 | 2011-07-06 | 比亚迪股份有限公司 | Device and method for power line carrier communication |
| CN102346954A (en) * | 2010-07-29 | 2012-02-08 | 上海资和通信科技有限公司 | Carrier reading system |
| CN102855743A (en) * | 2011-06-30 | 2013-01-02 | 北京新媒传信科技有限公司 | Meter reading system and method |
| CN102521959B (en) * | 2011-12-23 | 2014-07-16 | 深圳市思达仪表有限公司 | Non-feedback communication converter and communication method |
| CN104077907A (en) * | 2014-07-10 | 2014-10-01 | 国家电网公司 | Device and method for forwarding electricity consumption information parameters of electric energy meter |
| CN105553514A (en) * | 2015-12-11 | 2016-05-04 | 华立科技股份有限公司 | Modem based on EURIDIS protocol |
| CN105681146B (en) * | 2016-03-18 | 2018-12-11 | 宁波三星医疗电气股份有限公司 | A kind of Multi net voting internetwork coordination method for power wire broadband carrier communication network |
-
2003
- 2003-07-18 CN CNB031398669A patent/CN100490346C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102104399A (en) * | 2011-01-16 | 2011-06-22 | 郭建国 | System for ensuring power line carrier communications between energy meter gateways and white information appliances |
| CN102104399B (en) * | 2011-01-16 | 2013-10-16 | 郭建国 | System for ensuring power line carrier communications between energy meter gateways and white information appliances |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1571290A (en) | 2005-01-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101055663B (en) | A remote intelligent meter writing method and remote intelligent meter writing system | |
| CN201674496U (en) | Power line carrier and wireless communication conversion device and power line carrier meter reading system | |
| CN102693615B (en) | Gatherer device of wireless ad-hoc network meter reading system, and operation method | |
| CN102117537B (en) | Meter reading gateway, meter reading system and meter reading method | |
| CN100490346C (en) | Communication method of remote meter transcribing system and communication conversion module used therefor | |
| CN208766825U (en) | A kind of LoRa meeting southern network mark standard and carrier wave dual mode communication module | |
| CN105118258A (en) | Intelligent bimodule communication electricity meter and centralized meter reading and networking method | |
| CN206332860U (en) | LoRa gateways | |
| CN103501189B (en) | Based on the network data conversion device of power line carrier communication | |
| CN202736263U (en) | Collector device of wireless ad hoc network meter reading system | |
| CN100409268C (en) | Automatic KWH meter control system | |
| CN201562357U (en) | Data concentrator of automatic meter reading system | |
| CN102857293A (en) | RF (Radio Frequency) 485 data link | |
| CN108831140A (en) | Power information acquisition module based on HPLC electric line carrier communication technology | |
| CN209467012U (en) | A kind of electric car charging group system | |
| CN103281094B (en) | Based on the plug and play module of hybrid modulation mode power carrier communication | |
| CN2884657Y (en) | Autocontrol system of watt-hour meter | |
| CN101145274A (en) | Multifunctional meter communication module | |
| CN111402562A (en) | Power consumption information deep coverage acquisition system | |
| CN101763717A (en) | Data collecting device based on DCPLC mode | |
| CN203847102U (en) | CAN bus and 485 bus node circuit | |
| CN211018828U (en) | Multifunctional wireless repeater | |
| CN106922040B (en) | Novel wireless public network repeater and data transmission method thereof | |
| CN204680195U (en) | A kind of pressure unit and digital signal pressure transmission device | |
| CN107103742A (en) | A kind of all standing communication system applied to distribution terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090520 Termination date: 20170718 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |