CN203433671U - Remote meter reading device based on passive optical network - Google Patents
Remote meter reading device based on passive optical network Download PDFInfo
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- CN203433671U CN203433671U CN201320133692.8U CN201320133692U CN203433671U CN 203433671 U CN203433671 U CN 203433671U CN 201320133692 U CN201320133692 U CN 201320133692U CN 203433671 U CN203433671 U CN 203433671U
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Abstract
The utility model provides a remote meter-reading device based on a passive optical network. The device comprises a CPU (central processing unit) in which a remote intelligent meter-reading program is stored, a memory, a RS 485 interface connected with a user side electricity meter, an optical fiber communication interface used for performing data communication with a remote master station meter-reading center, and a FLASH in which a master station protocol module, an electricity meter protocol module, a protocol analysis module and a message forwarding module are stored, wherein signal output ends of the master station protocol module and the electricity meter protocol module are respectively connected with the signal input end of the protocol analysis module; the protocol analysis module is connected with the message forwarding module by means of a data connecting wire; the message forwarding module is communicated with the remote master station meter reading center by means of the passive optical network and connected with the user side electricity meter through the RS485 interface. According to the remote meter-reading device, an EPON (Ethernet passive optical network) protocol, a power meter reading protocol, a communication port protocol and the like are integrated into one equipment, the complexity of the equipment can be effectively reduced, the reliability of the equipment can be improved, the equipment cost can be reduced, and the assembly process can be simplified.
Description
Technical field
The utility model relates to electric energy meter information acquiring technology, particularly a kind of intelligent remote kilowatt meter recorder based on EPON.
Background technology
The passive optical-fiber network advantages such as maturation, cost is low, the life-span is long, operating distance is far away that possess skills, therefore, in the intellectualized reconstruction engineering proposal of national grid, become first-selected network carrier.Under this background, the technology that the remote intelligent based on passive optical-fiber network is checked meter and equipment also develop rapidly.
Reading technique based on EPON, relate to technical field very many, as communication port agreement, procotol, main website agreement, ammeter agreement and communication support measure etc., current technology, to adopt the equipment with difference in functionality, external interface by equipment connects, assembled composition.Such equipment, volume is large, connection is complicated, and reliability, compatibility all have problems.
Summary of the invention
The purpose of this utility model is that above-mentioned functions module is concentrated in an equipment, designed a kind of remote reading meter based on EPON, integrate function to system of EPON, concentrator and collection, the complexity of reduction equipment, the reliability of raising equipment, reduce equipment cost, simplify installation process.
For achieving the above object, the technical solution adopted in the utility model is: a kind of remote reading meter based on EPON, structure comprises the CPU that stores remote intelligent meter recording program, internal memory, and for connecting the RS485 interface of user side ammeter, key is: in the structure of described remote reading meter, also comprise the fiber optic data communication interface for carrying out data communication with the long-range main website center of checking meter, store main website protocol module, ammeter protocol module, the FLASH of protocol analysis module and message transmitting module, main website protocol module is connected with the signal input part of protocol analysis module respectively with the signal output part of ammeter protocol module, protocol analysis module is connected with message transmitting module by data connecting line, message transmitting module is by EPON and the long-range main website center to center communications of checking meter, and be connected with user side ammeter by RS485 interface.
Equipment has fiber optic data communication interface and RS485 interface, and by fiber optic data communication interface, this remote reading meter is connected to the long-range main website center of checking meter through optical link, and by RS485 interface, this remote reading meter connects the electric energy meter of user side.In the FLASH of equipment, there are five modules: main website protocol module, ammeter protocol module, protocol analysis module, message transmitting module, timed task module, modules is coordinated independently of one another, mutually, jointly completes remote meter reading process, meets acquisition system communication protocol.Main website protocol module is processed D/L 376.1 agreements; Ammeter protocol module is processed D/L 645 agreements; Between agreement, by protocol analysis module, agreement is resolved, and change into main website agreement, ammeter agreement, then initiation message forwarding module, delivers to main website or arrives ammeter; Time block is realized the function of timed sending heartbeat frame, timing acquiring, timed task.
Adopt the utility model, EPON agreement, electricity meter-reading agreement, communication port agreement etc. are fused in an equipment, can effectively reduce the complexity of equipment, improve the reliability of equipment, reduce equipment cost, simplify installation process.
Accompanying drawing explanation
Fig. 1 is equipment composition frame chart.
Embodiment
A kind of remote reading meter based on EPON, structure comprises the CPU that stores remote intelligent meter recording program, internal memory, and for connecting the RS485 interface of user side ammeter, importantly: in the structure of described remote reading meter, also comprise the fiber optic data communication interface for carrying out data communication with the long-range main website center of checking meter, store main website protocol module, ammeter protocol module, the FLASH of protocol analysis module and message transmitting module, main website protocol module is connected with the signal input part of protocol analysis module respectively with the signal output part of ammeter protocol module, protocol analysis module is connected with message transmitting module by data connecting line, message transmitting module is by EPON and the long-range main website center to center communications of checking meter, and be connected with user side ammeter by RS485 interface.
In described FLASH, be also provided with the timed task module of communicating by letter with CPU.
In described FLASH, be also provided with system upgrade module, the check meter control end at center of the controlled end of system upgrade module and long-range main website is connected.
The quantity of described RS485 interface is 2, and one is acquisition port, and one is service port.
The model of described CPU is OPL 06750 processor.
In described FLASH, be also provided with the message queue of communication information between storage modules.
Referring to Fig. 1, equipment adopts OPL 06750 processor, and SDROM is as internal memory, embedded OS, and multitask mode, for processing remote electricity meter-reading full-service O&M in real time provides support.The master routine of memory device in FLASH.Equipment provides two RS485 interfaces, and one of them connects electric energy meter, Information Monitoring, and in addition one as plant maintenance; Fiber optic data communication interface is connected to the long-range main website center of checking meter by fibre circuit.Except necessary hardware interface, hang over outward and in the FLASH on OPL 06750, be also provided with six modules: system upgrade module, main website protocol module, ammeter protocol module, protocol analysis module, message transmitting module, timed task module, meanwhile, also have message queue in FLASH.
Wherein, the protocol processes D/L of main website 376.1 agreements, ammeter protocol processes D/L 645 agreements, between agreement, by protocol analysis module, agreement is resolved, and change into the D/L of main website 376.1 agreements or D/L 645 agreements, message transmitting module is by fiber optic data communication interface or RS485 interface, and protocol information is delivered to long-range main website check meter center or user side ammeter, and time block is realized timed sending heartbeat frame, timing acquiring, timed task.
Upgrading module completes the upgrading of software, adopts system active/standby mode, to avoid accident power-off in escalation process, causes system to load.
For guaranteeing the stable of system, system pre-defines the priority of task when starting, and preferentially meets the task that real-time priority is high in system operational process.Between a plurality of real-time tasks, adopt message queue mode to communicate, coordinate, message adopts user-defined format, comprising source module title, module title, and message number, processing type of service.
This remote reading meter enters isochronous schedules process by message mode between each module, until system normal operation after powering on and loading configuration and finish.Whether master routine Sampling network signal is normal, and then system is initiated address request, treats that server replys, and after completing address assignment and finishing, system enters the flow process of checking meter normally.First this meter copying device initiates to start frame, and acknowledgement frame is replied in the center of checking meter by long-range main website.Meter copying device waits for that the long-range main website center of checking meter initiates the instructions such as inquiry, terminal parameter issue, and the large module of system six starts the order that division of labor processing issues.Equipment can back up by remote double the expansion of the newly-increased downlink business type of reliable upgrading mode, and the connection of polymorphic type ammeter terminal node, is applicable to electric system long-distance meter-reading system.
Claims (3)
1. the remote reading meter based on EPON, structure comprises the CPU that stores remote intelligent meter recording program, internal memory, and for connecting the RS485 interface of user side ammeter, it is characterized in that: in the structure of described remote reading meter, also comprise the fiber optic data communication interface for carrying out data communication with the long-range main website center of checking meter, store main website protocol module, ammeter protocol module, the FLASH of protocol analysis module and message transmitting module, main website protocol module is connected with the signal input part of protocol analysis module respectively with the signal output part of ammeter protocol module, protocol analysis module is connected with message transmitting module by data connecting line, message transmitting module is by EPON and the long-range main website center to center communications of checking meter, and be connected with user side ammeter by RS485 interface, in described FLASH, be also provided with the timed task module of communicating by letter with CPU, in described FLASH, be also provided with system upgrade module, the check meter control end at center of the controlled end of system upgrade module and long-range main website is connected.
2. a kind of remote reading meter based on EPON according to claim 1, is characterized in that: the quantity of described RS485 interface is 2, and one is acquisition port, and one is service port.
3. a kind of remote reading meter based on EPON according to claim 1, is characterized in that: the model of described CPU is OPL06750 processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320133692.8U CN203433671U (en) | 2013-03-22 | 2013-03-22 | Remote meter reading device based on passive optical network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320133692.8U CN203433671U (en) | 2013-03-22 | 2013-03-22 | Remote meter reading device based on passive optical network |
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| Publication Number | Publication Date |
|---|---|
| CN203433671U true CN203433671U (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320133692.8U Expired - Fee Related CN203433671U (en) | 2013-03-22 | 2013-03-22 | Remote meter reading device based on passive optical network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107481505A (en) * | 2017-08-09 | 2017-12-15 | 国家电网公司 | A kind of power information harvester, system and method |
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2013
- 2013-03-22 CN CN201320133692.8U patent/CN203433671U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107481505A (en) * | 2017-08-09 | 2017-12-15 | 国家电网公司 | A kind of power information harvester, system and method |
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| Date | Code | Title | Description |
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| 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: 20140212 |
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| CF01 | Termination of patent right due to non-payment of annual fee |