CN105046930A - Remote automatic meter recording system - Google Patents

Remote automatic meter recording system Download PDF

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Publication number
CN105046930A
CN105046930A CN201510366813.7A CN201510366813A CN105046930A CN 105046930 A CN105046930 A CN 105046930A CN 201510366813 A CN201510366813 A CN 201510366813A CN 105046930 A CN105046930 A CN 105046930A
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China
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data
meter
concentrator
power
communication network
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CN201510366813.7A
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Chinese (zh)
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赖玉春
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赖玉春
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Priority to CN201510366813.7A priority Critical patent/CN105046930A/en
Publication of CN105046930A publication Critical patent/CN105046930A/en

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Abstract

The invention discloses a remote automatic meter recording system, which comprises an intelligent power meter, a data acquirer, a second power line modem, a low-voltage power grid, a first power line modem, a concentrator, a second modem, a data communication network, a first modem and a remote server meter reading center, wherein the data acquirer is embedded into the intelligent power meter, and is used for converting acquired power data into a data format suitable for power carrier transmission through the second power line modem, and outputting and transmitting the power data through the low-voltage power grid; the data format of the data transmitted by the low-voltage power grid through a carrier is converted by the first power line modem, and the format-converted data is transmitted to the concentrator; the data communication network comprises any one of an optical fiber network, a GPRS (General Packet Radio Service) network, a 3G (3rd-Generation) communication network and a 4G (4th-Generation) communication network. The remote automatic meter recording system has the advantages of high technical level, high reliability, data accuracy, high adaptability, complete functions, small module size and low power consumption.

Description

A kind of remote automatic meter reading system
Technical field
The present invention relates to a kind of kilowatt meter reading-out system, specifically a kind of remote automatic meter reading system be applied in for field of power distribution.
Background technology
Along with the fast development of power construction, the continuous expansion of electrical network scale.In many-sided situation, construction and the plant maintenance work of electrical network are more and more frequent.Transmission line of electricity as electric power conveying tie have distance, dispersed large, be difficult to make an inspection tour and the feature such as maintenance, following Te Likang product " transmission line status on-line monitoring system " can well be monitored the state of transmission line of electricity.
Automatic meter reading system refers to and adopts the technology such as communication and computer network automatically to read the new technology counted with processing list.Development Automatic meter reading is the needs improving estate management level, is also must needing of developing rapidly of network and computer technology.Adopt Automatic meter reading, human resources can not only be saved, and the accuracy of checking meter can be improved, reduce because estimating or transcribing and cause bill to make mistakes, make regulatory authorities promptly and accurately can obtain data message, because user no longer needs to preengage with the person of checking meter to visit the time of checking meter, bill can also be inquired about rapidly, therefore this technology is more and more subject to the welcome of user.Along with the reform of electricity price, power supply department is for enter an item of expenditure in the accounts rapidly, and need to obtain more data message as early as possible from user, as electric energy requirement, time sharing electrical energy and load curve etc., automatic data logging provides practicable technological means for realizing the demand.
Over nearly 10 years, the scientific and technical personnel of the states such as the U.S., Britain, Germany, Israel, China are engaged in the technical research and development of this respect always.Up to the present, oneself has some enterprise developments to go out product for power line carrier communication both at home and abroad: the power line carrier meter reading system as exploitation makes encouraging progress and success technically, but not yet can meet user's request for utilization, due to special chip, the rate of copying of kilowatt meter reading-out system is the highest only can reach about 90%.However, the technology of current China in this belongs to the rank of advanced units.Facts have proved the reliable carrier communication that can not realize the civilian power network of China with import all purpose communication chip.But along with the development of the market demand and technology, civil power line carrier communication in the future will become a very large communication network.
At present, occurred some Automatic meter reading system although domestic, installation is also little, and technology immature, and data transmission stability is not high, so the research of Automatic meter reading system still has larger development space.
Summary of the invention
For overcoming the deficiencies in the prior art, the invention provides a kind of remote automatic meter reading system.Field bus technique, low voltage power line carrier mechanics of communication and telephonic communication combine with technique get up by the application, to realize robotization and the intellectuality of remote centralized kilowatt meter reading-out system.
A kind of remote automatic meter reading system, comprise intelligent electric energy meter, data acquisition unit, power line modem two, low-tension network, power line modem one, concentrator, modulator-demodular unit two, data communication network, modulator-demodular unit one, remote server check meter center, for when not having a power failure, carry out continuously or periodically electricity to the electricity consumption situation of consumer automatically to monitor, realize the collection of power consumption data under on-line monitoring state, transmission, background process and storage forwarding function.Wherein, data acquisition unit is embedded on intelligent electric meter, in order to automatically to gather, to process and to send power consumption information and the pay imformation of monitored consumer, the power consumption data collected to be converted to data layout that applicable power carrier transmits by power line modem two and are carried out by low-tension network outputs and transmit by data acquisition unit; The data of low-tension network carrier-wave transmission carry out Data Format Transform by power line modem one, data after format conversion are transferred to concentrator, and described data communication network comprises any one in fiber optic network, GPRS, 3G communication network, 4G communication network.
Described intelligent electric energy meter with monitored consumer for object, the power consumption information of real-time calculating consumer and pay imformation, this intelligent electric energy meter has clock timer, for real-time calibration system working time, this intelligent electric energy meter also has I/0 simultaneously, and it is for being connected with the data-interface of data acquisition unit.
Configure in units of described concentrator Shi Yi community, be arranged in the power distribution station of community, be used for sending instruction to data acquisition unit, copy and accept intelligent electric meter power consumption data and charge data, and then send remote server to by data communication network and to check meter center; Described concentrator receives the instruction at center of checking meter, and dependent instruction is transmitted to again the data acquisition unit of specifying in community.
Described data concentrator timing gathers the data of intelligent electric meter, and the data be aggregated into are stored in himself subsidiary data-carrier store.
Modulation /demodulation two and modulator-demodular unit one carry out modulation and demodulation for the data transmitted data communication network, data are checked meter between center at concentrator and remote service and transmits.
To be classified to the electric quantity data that concentrator is sent here by data communication network and store in remote server center of checking meter, the time is made a copy of in check and correction, arrange Customs Assigned Number and checking meter the time, issue and make a copy of instruction and statistics electric rate, for collecting the electricity charge, line loss calculation, spatial load forecasting provide foundation.
All modulator-demodular units are numerical frequency and control modulator-demodular unit (shift keying modulation detuner).
The communication of checking meter between center of data concentrator and remote server adopts public data communication network as medium of communication, the communication of communication mainly between communication network data line and modulator-demodular unit that remote server is checked meter between center and concentrator.
Utilize the data communication that singlechip control chip control remote server is checked meter between center and concentrator, combined by the control circuit of singlechip chip and correspondence thereof and shift keying modulation detuner, the low-tension network carrying out data transmission by existing data communication network and use power carrier carries out data transmission, realizes the data communication function that remote server is checked meter between center and user.
About concentrator and remote server check meter center host computer PC between connection, transmitting terminal from the RS-232 mouth of host computer PC out, Transistor-Transistor Logic level is become to deliver to modulator-demodular unit one RS-232 level conversion through RS-232/TTL level transferring chip, modulator-demodular unit is by Data Modulation audio signal, the modulator-demodular unit two of the other side is passed to by data communication network, sound signal is demodulated to data by the modulator-demodular unit of the other side, then delivers in the single-chip microcomputer of concentrator, carries out data processing.Vice versa.
Communication between data acquisition unit and concentrator, low voltage power line carrier data can not cross over transformer, so concentrator is within being arranged on residential quarters distribution substation substantially, the communication between data acquisition unit and concentrator adopts low-voltage powerline carrier communication mode.
Due to technique scheme, the present invention has following beneficial effect: can carry out standardized process to the data monitored, and buffer memory and forwarding are carried out to data, thus improve the process of the status data of converting equipment and the reliability and stability of transmission, control for converting equipment provides effective guarantee, decrease the probability of power station equipment misoperation, improve the stability of operation of power networks.
Accompanying drawing explanation
In order to be illustrated more clearly in technical scheme of the present invention, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is system architecture schematic diagram;
Fig. 2 is concentrator composition structured flowchart;
Fig. 3 is the messaging diagrams of concentrator and host computer.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, all belongs to the scope of protection of the invention.
Embodiment:
See Fig. 1, a kind of remote automatic meter reading system, comprise intelligent electric energy meter, data acquisition unit, power line modem two, low-tension network, power line modem one, concentrator, modulator-demodular unit two, data communication network, modulator-demodular unit one, remote server check meter center, for when not having a power failure, carry out continuously or periodically electricity to the electricity consumption situation of consumer automatically to monitor, realize the collection of power consumption data under on-line monitoring state, transmission, background process and storage forwarding function.Wherein, data acquisition unit is embedded on intelligent electric meter, in order to automatically to gather, to process and to send power consumption information and the pay imformation of monitored consumer, the power consumption data collected to be converted to data layout that applicable power carrier transmits by power line modem two and are carried out by low-tension network outputs and transmit by data acquisition unit; The data of low-tension network carrier-wave transmission carry out Data Format Transform by power line modem one, and the data after format conversion are transferred to concentrator.Described data communication network comprises any one in fiber optic network, GPRS, 3G communication network, 4G communication network.
Described intelligent electric energy meter with monitored consumer for object, the power consumption information of real-time calculating consumer and pay imformation, this intelligent electric energy meter has clock timer, for real-time calibration system working time, this intelligent electric energy meter also has I/0 simultaneously, and it is for being connected with the data-interface of data acquisition unit.
Configure in units of described concentrator Shi Yi community, be arranged in the power distribution station of community, be used for sending instruction to data acquisition unit, copy and accept intelligent electric meter power consumption data and charge data, and then send remote server to by data communication network and to check meter center; Described concentrator receives the instruction at center of checking meter, and dependent instruction is transmitted to again the data acquisition unit of specifying in community.
Described data concentrator timing gathers the data of intelligent electric meter, and the data be aggregated into are stored in himself subsidiary data-carrier store.
Modulation /demodulation two and modulator-demodular unit one carry out modulation and demodulation for the data transmitted data communication network, data are checked meter between center at concentrator and remote service and transmits.
To be classified to the electric quantity data that concentrator is sent here by data communication network and store in remote server center of checking meter, the time is made a copy of in check and correction, arrange Customs Assigned Number and checking meter the time, issue and make a copy of instruction and statistics electric rate, for collecting the electricity charge, line loss calculation, spatial load forecasting provide foundation.
All modulator-demodular units are shift keying modulation detuner.
The communication of checking meter between center of data concentrator and remote server adopts public data communication network as medium of communication, the communication of communication mainly between communication network data line and modulator-demodular unit that remote server is checked meter between center and concentrator.
Utilize the data communication that singlechip control chip control remote server is checked meter between center and concentrator, combined by the control circuit of singlechip chip and correspondence thereof and shift keying modulation detuner, the low-tension network carrying out data transmission by existing data communication network and use power carrier carries out data transmission, realizes the data communication function that remote server is checked meter between center and user.
About concentrator and remote server check meter center host computer PC between connection, transmitting terminal from the RS-232 mouth of host computer PC out, Transistor-Transistor Logic level is become to deliver to modulator-demodular unit one RS-232 level conversion through RS-232/TTL level transferring chip, modulator-demodular unit is by Data Modulation audio signal, the modulator-demodular unit two of the other side is passed to by data communication network, sound signal is demodulated to data by the modulator-demodular unit of the other side, then delivers in the single-chip microcomputer of concentrator, carries out data processing.Vice versa.
Communication between data acquisition unit and concentrator, low voltage power line carrier data can not cross over transformer, so concentrator is within being arranged on residential quarters distribution substation substantially, the communication between data acquisition unit and concentrator adopts low-voltage powerline carrier communication mode.
The function of each chief component of described kilowatt meter reading-out system is: (1) intelligent electric meter, for electromagnetic electric energy meter, need install a sensor or optical-electric module additional in table, the data of electric energy meter be converted to electric signal and export; For electronic electric energy meter, then the electric pulse of table can be directly utilized to export.(2) data acquisition unit, data acquisition unit is actually the bridge that meter one takes terminal and data concentrator centre, its major function is the electric pulse information simultaneously gathering multiple user's electric energy meter, and through process and storage, delivered on concentrator along low voltage electric network by power line modem MODEM.And when receiving the order on upper strata, data acquisition unit can send to billing terminal and check meter or the order of power-off.
(3) power line modem MODEM mainly carries out modulation and demodulation to the data that collector is sent here, strengthens the anti-interference to low voltage electric network and the bit error rate lowering transmission.
(4) data concentrator, data concentrator is mounted in the distribution substation district of community, and its function is given an order to collector, copies and accepts the data of billing terminal, and then send the data center in a distant place to by data communication network; The order of the data center that data concentrator can receive, and related command is transmitted to the local data acquisition unit of specifying again.In addition, data concentrator regularly can also copy and accept the data of billing terminal, and the data copied and accepted are stored in data-carrier store.
(5) remote server is checked meter center, by communication network the electric quantity data that concentrator is sent here classified and store, proofread the time of making a copy of, Customs Assigned Number is set and the time of checking meter, issue make a copy of order and statistics and valuation, for collecting the electricity charge, line loss calculation, spatial load forecasting provide service.
(6) communication between concentrator and data center, communication between data concentrator and data center adopts data communication network as medium of communication, the communication of communication between the data center of Automatic meter reading system and data concentrator mainly between telephone line modem MODEM module, in the design of power line carrier centralized automatic meter-reading device, the data communication that we utilize single-chip microcomputer to carry out between two places, combined by the control circuit of single-chip microcomputer and correspondence and FSK (frequency shift keying) modulator-demodular unit (modem), transmit by existing public data communication net, realize the data communication function between two places.
See Fig. 2, concentrator is the data of the data acquisition unit of concentrated subordinate, and issue central server, concentrator has two communication objects, when different object, need to take different communication modes, when being that data acquisition unit communicates, use power line carrier communication, and realize communicating by telephone wire and central server.The information Storage and Processing amount of concentrator is comparatively large, and we need adopt the higher processor of processing speed to go forward side by side the expansion of line storage.Concentrator is mounted in community supply transformer low-pressure side, as the key link of carrier meter reading system, is the core of whole system, is the hinge between junctor and electric supply meter.The part that concentrator is checked meter as power line carrier, plays a part to upload to assign.The major function of concentrator has: (1) copies and accepts function, copies and accepts according to what arrange the data that mode collection copies and accepts ammeter.Concentrator can according to host computer download timing meter reading, monthly on time start the moon freeze to check meter; There is the function of checking meter in real time and checking meter to some particular table.(2) function is set, by host computer, concentrator is arranged, comprise set of time of checking meter, fixed relay arranges.(3) communication function, concentrator receives host computer downloading data, comprises the information of ammeter quantity, table number, parameter of checking meter and relay management needs, can according to arranging the data copying and accepting carrier power meter.(4) data processing, data processing comprise data storage, freeze.(5) function during school, when concentrator carries out system school by host computer, regulation time error.
Concentrator itself is made up of parts such as main control unit, database storage unit, clock unit, carrier communication unit, data transfer communications unit.Concentrator should do host computer from machine, be again the main frame of carrier power meter, the designing requirement of its soft and hardware fundamentally ensures that system is reliable, stable.
Primary controller is the core of concentrator, and the collection of data, process are all carry out under the control of primary controller with transmission, outside growth data memory module and clock module.Data-carrier store be mainly used in stored parameter, variable, concentrator self parameter, the parameter and ammeter electricity etc. of responsible ammeter; Real-time clock provides time standard for concentrator timing meter reading; Data feedback channel and the communication line between concentrator and host computer, adopt data communication network as communication media, will arrange the telephone number that concentrator line is connected when host computer communicates with concentrator; Down going channel and the communication between concentrator and carrier power meter, adopting with SSCP300 is that the power carrier mode of core carries out communication of checking meter.
The design of concentrator primary controller, concentrator is the hinge of communication, and it is responsible for the contact between central computer and acquisition terminal.Receive on the one hand various operational orders from computing machine and under pass acquisition terminal; On the other hand, by the various information back management centre computers of acquisition terminal, also store data and the relevant parameters of administrative table meter simultaneously, and there is timing and copy and accept acquisition terminal (intelligent meter) data in real time, the functions such as the duty of real time monitoring acquisition terminal (intelligent meter).Concentrator uplink communication takes MODME to be contacted by telephone wire and center base station, or by serial ports directly and computing machine contact.So select processing speed, storage space and the driving force that must consider it during primary controller.
See Fig. 3, transmitting terminal from the RS-232 mouth of host computer PC out, Transistor-Transistor Logic level is become to deliver to modulator-demodular unit RS-232 level conversion through RS-232/TTL level transferring chip, modulator-demodular unit is by Data Modulation audio signal, the modulator-demodular unit of the other side is passed to by telephone communication network, sound signal is demodulated to data by the modulator-demodular unit of the other side, then delivers in the single-chip microcomputer of the other side, carries out data processing.Vice versa.
And, communication between data acquisition unit and data concentrator, low voltage power line carrier data can not cross over transformer, so data concentrator is within being arranged on residential quarters distribution substation substantially, the communication between data acquisition unit and concentrator adopts low-voltage powerline carrier communication mode.
Above disclosedly be only a kind of preferred embodiment of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.

Claims (8)

1. a remote automatic meter reading system, comprise intelligent electric energy meter, data acquisition unit, power line modem two, low-tension network, power line modem one, concentrator, modulator-demodular unit two, data communication network, modulator-demodular unit one, remote server is checked meter center, for when not having a power failure, carry out continuously or periodically electricity to the electricity consumption situation of consumer automatically to monitor, realize the collection of power consumption data under on-line monitoring state, transmission, background process and storage forwarding function, it is characterized in that, data acquisition unit is embedded on intelligent electric meter, in order to automatic collection, process and send power consumption information and the pay imformation of monitored consumer, the power consumption data collected to be converted to data layout that applicable power carrier transmits by power line modem two and are carried out by low-tension network outputs and transmit by data acquisition unit, the data of low-tension network carrier-wave transmission carry out Data Format Transform by power line modem one, data after format conversion are transferred to concentrator, and described data communication network comprises any one in fiber optic network, GPRS, 3G communication network, 4G communication network.
2. remote automatic meter reading system according to claim 1, it is characterized in that, described intelligent electric energy meter with monitored consumer for object, the power consumption information of real-time calculating consumer and pay imformation, this intelligent electric energy meter has clock timer, for real-time calibration system working time, this intelligent electric energy meter also has I/0 simultaneously, and it is for being connected with the data-interface of data acquisition unit.
3. remote automatic meter reading system according to claim 2, it is characterized in that, configure in units of described concentrator Shi Yi community, be arranged in the power distribution station of community, be used for sending instruction to data acquisition unit, copy and accept intelligent electric meter power consumption data and charge data, and then send remote server to by data communication network and to check meter center; Described concentrator receives the instruction at center of checking meter, and dependent instruction is transmitted to again the data acquisition unit of specifying in community.
4. remote automatic meter reading system according to claim 3, is characterized in that, described data concentrator timing gathers the data of intelligent electric meter, and the data be aggregated into are stored in himself subsidiary data-carrier store.
5. remote automatic meter reading system according to claim 4, it is characterized in that, modulation /demodulation two and modulator-demodular unit one carry out modulation and demodulation for the data transmitted data communication network, data are checked meter between center at concentrator and remote service and transmits.
6. the remote automatic meter reading system according to claim 3 or 4, it is characterized in that, to be classified to the electric quantity data that concentrator is sent here by data communication network and store in remote server center of checking meter, the time is made a copy of in check and correction, Customs Assigned Number is set and checks meter the time, instruction and statistics electric rate are made a copy of in issue, and for collecting the electricity charge, line loss calculation, spatial load forecasting provide foundation.
7. remote automatic meter reading system according to claim 6, it is characterized in that, the communication of checking meter between center of data concentrator and remote server adopts public data communication network as medium of communication, the communication of communication mainly between communication network data line and modulator-demodular unit that remote server is checked meter between center and concentrator.
8. remote automatic meter reading system according to claim 7, it is characterized in that, utilize the data communication that singlechip control chip control remote server is checked meter between center and concentrator, combined by the control circuit of singlechip chip and correspondence thereof and shift keying modulation detuner, the low-tension network carrying out data transmission by existing data communication network and use power carrier carries out data transmission, realizes the data communication function that remote server is checked meter between center and user.
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