CN204129936U - Long-range gas meter reading system - Google Patents
Long-range gas meter reading system Download PDFInfo
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- CN204129936U CN204129936U CN201420508111.9U CN201420508111U CN204129936U CN 204129936 U CN204129936 U CN 204129936U CN 201420508111 U CN201420508111 U CN 201420508111U CN 204129936 U CN204129936 U CN 204129936U
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Abstract
The utility model relates to a kind of long-range gas meter reading system.At least comprise management server, concentrator, collector, terminal list meter, it is characterized in that management server and concentrator are by wireless public network channel or the communication of ethernet communication mode, concentrator and collector are by low voltage power line carrier communication, and collector and terminal list meter adopt wireless radio frequency mode communication.Compared with prior art, the utility model collector and table count between the mode of wireless telecommunications carry out exchanges data, without the need to repeating wiring cable, overall investment is lower, needs the link of control also less.
Description
Technical field
The utility model relates to automation control area, is specifically related to a kind of long-range gas meter reading system.
Background technology
The applicant once disclosed for a kind of Remote Intelligent Management System for Storage based on power line carrier with publication number CN 203733287 U, comprise and can carry out N number of concentrator of wireless data exchange with the control center of combustion gas department, N >=1, M the collection/controller be connected by the 50HZ low-voltage power line that same transformer online is powered with each concentrator, M >=1, each collection/controller is connected with the individual gauging table with valve control device of P, P >=3, it is characterized in that described concentrator comprises wireless communication module, intensive data processing module and the first carrier module with two-way function, described collection/controller comprises the second carrier module, collection/control data processing module, control module and the copy reading module with two-way function, controls respectively for realizing the long-range valve control direct-reading meter scale different to some users of different department.But still there is the space of improving further in this technical scheme: although as unit collection/adopt low voltage power line carrier communication between controller and concentrator, but unit collection/controller and table still need to carry out exchanges data by the mode of the wire communication of routine between counting, still there is the problem of repetition wiring cable, overall investment is still higher, needs the link of control also more.
Summary of the invention
The purpose of this utility model is the aforementioned deficiency solving prior art existence, discloses a kind of long-range gas meter reading system.
For realizing this object, disclosed in the utility model, technical scheme is:
This long-range gas meter reading system, at least comprise management server 1, concentrator 2, collector 3, terminal list meter 4, it is characterized in that management server and concentrator are by wireless public network channel or the communication of ethernet communication mode, concentrator and collector are by low voltage power line carrier communication, and collector and terminal list meter adopt wireless radio frequency mode communication.
Further, described concentrator comprises data management system, data-carrier store, router, route memory, carrier channel, up channel, power supervisor, wherein up channel is connected with data management system, data management system is also also connected with route memory, power supervisor, carrier channel with data-carrier store, router, router, and carrier channel is also connected with power supervisor, low-voltage power line.
Further, described collector comprises MCU, RS485 interface chip, M-BUS interface circuit, carrier chip, demodulation chip, storer, reset/house dog, pilot lamp and infrared communication unit composition.
Further, wireless telemetering gas-meter counted by described terminal list, is take diaphragm gas meter as metering base table, installs flow signal acquisition module, wireless radio frequency transmission module, valve control module and power management module composition additional.
Further, data management system is technical grade processor, and specification is AT91SAM9260; Router is ARM32 position, and model is Cortex-M3CPU; Up channel comprises RS485 cascade distribution transformer terminals, RS232, infrared, GPRS, RJ45 port.
Further, MCU selects the 8BIT position STM8207CB of ST, built-in 2K Byte-RAM internal reset/house dog; Carrier chip selects Qingdao Neusoft carrier chip SSC1641; RS485 interface chip selects the SN65LBC184D of TI company.
Compared with prior art, the utility model collector and table count between the mode of wireless telecommunications carry out exchanges data, without the need to repeating wiring cable, overall investment is lower, needs the link of control also less.
Accompanying drawing explanation
Fig. 1 is hierarchical structure figure of the present utility model.
Fig. 2 is the structure principle chart of the utility model concentrator.
Fig. 3 is the structure principle chart of the utility model collector.
Embodiment
A kind of long-range gas meter reading system, comprise management server 1, concentrator 2, collector 3, terminal list meter 4, it is characterized in that management server and concentrator are by wireless public network channel or the communication of ethernet communication mode, concentrator and collector are by low voltage power line carrier communication, and collector and terminal list meter adopt wireless radio frequency mode communication.Described concentrator comprises data management system, data-carrier store, router, route memory, carrier channel, up channel, power supervisor, wherein up channel is connected with data management system, data management system is also also connected with route memory, power supervisor, carrier channel with data-carrier store, router, router, and carrier channel is also connected with power supervisor, low-voltage power line.Data management system is technical grade processor, and specification is AT91SAM9260; Router is ARM32 position, and model is Cortex-M3CPU; Up channel comprises RS485 cascade distribution transformer terminals, RS232, infrared, GPRS, RJ45 port.Described collector comprises MCU, RS485 interface chip, M-BUS interface circuit, carrier chip, demodulation chip, storer, reset/house dog, pilot lamp and infrared communication unit composition.MCU selects the 8BIT position STM8207CB of ST, built-in 2K Byte-RAM internal reset/house dog; Carrier chip selects Qingdao Neusoft carrier chip SSC1641; RS485 interface chip selects the SN65LBC184D of TI company.Wireless telemetering gas-meter counted by described terminal list, is take diaphragm gas meter as metering base table, installs flow signal acquisition module, wireless radio frequency transmission module, valve control module and power management module composition additional.
Below utility model is described in more detail:
Terminal meter table tool is the gas meter, flow meter with wireless remote transmission ability, adopts superfrequency wireless radio-frequency, and the Networking protocol of advanced person, makes each table meter automatically can select Optimization route when uploading data, realizes stable radio remote distance data transmission;
Data collector adopts Yantai to rise the data acquisition unit of connection Information technology independent research, gathers the data of all kinds of gauge tables such as water, electricity, warm, gas, and by data upload to data gateway or terminal server.Its downlink communication supports RS-485, M-bus bus interface, wireless radio interface; Uplink communication adopts power line carrier technology.And the multiple metering stipulations of different Biao Ji producer can be supported, as DL/T 645-1997 and DL/T 645-2007 stipulations and CL/T188-2004 standard etc.
Data gateway (concentrator) is also rise connection Information technology to have technical products by oneself, it is the visual plant in large-scale centralized kilowatt meter reading-out system, the continuous data of various intelligent instrument, acquisition terminal or the acquisition module with carrier communication function or RS-485 serial communication channels can be stored by down channel automatic transcription, and by modes such as wireless public network channel (GSM/GPRS, CDMA etc.), TCP/IP ethernet communications by data remote to management server.
Communication network is divided into the downlink communication between data acquisition unit and gauge table, and the stage casing between data acquisition unit with data concentrator communicates, and the uplink communication between concentrator and main website server.Downlink communication adopts less radio-frequency skill and ad hoc network; Stage casing communication, by the electric power carrier communication technology of advanced person, achieves and exempts from wiring, greatly reduce engineering construction difficulty; Uplink communication relies on the mobile communication network of telecommunication provider, by the wireless communication module (GSM/GPRS, CDMA etc.) on concentrator, realizes the reliable remote transmission of data stabilization.
Management server is equipped with main website management system software, database and various system and application software, is data center and the administrative center of whole automatic meter reading system.The functions such as user oriented can realize assigning the task of checking meter, data message is checked, Report Server Management, chargeable service.
1, wireless gas meter
Wireless telemetering gas-meter take diaphragm gas meter as metering base table, installs the novel intelligent gas meter, flow meter that flow signal acquisition module, wireless radio frequency transmission module, valve control module and power management module etc. form additional.This table, except having the volume metering function of the combustion gas such as coal gas, rock gas, liquefied petroleum gas (LPG), also has the functions such as continuous data data-collection, Wireless Data Transmission, valve remote control.
The structure of wireless telemetering gas-meter is integral type, primarily of critical piece compositions such as base table, electronic controller, Ji electricity Zhuan Huandanyuan operation valve, power supply, shells.
There is the function of gas-robbery resistence, Anti-dismantling.
The parameters such as wireless telecommunications address can be set, make gas meter, flow meter and wireless telecommunications address one_to_one corresponding, can not privately revise the parameters such as wireless telecommunications address, i.e. table one address.
Adopt character wheel of counter reading technology, ensure the accuracy counted more reliably.
By with the communication of collector remote controlled gas meter, flow meter inner valve switch.
When cell voltage is not enough, LED light is long bright, and cutting-off valve.User changes four joints No. 5 iodine batteries just can commonly use gas, easy to operate.
2, data acquisition unit
Collector mainly completes combustion gas, also ammeter, water meter, the data acquisition of hotlist, storage and forwarding is comprised, participate in automatic network-building and carrier wave/wireless channel is provided, communicated with gauge table by the M-bus/RS-485 interface of self, after collecting the related data of table meter, by the carrier wave/wireless channel of himself, the data collected are reached concentrator, finally reaches background system.Also table meter can will be reached under the instruction of background management system or parameter according to systemic-function.
Collector function divides up stipulations process on the whole, descendingly checks meter and stores data.As follows for its products characteristics of using function:
2.1 data acquisition
A) according to collection period and the image data kind of concentrator setting, automatically gathering and preserve using of gauge table can data.Support maximum 115 pieces of M-BUS interface table meters and 30 pieces of RS-485 interface table meters.
B) DL/T 645-1997 and the various communications protocols such as DL/T 645-2007 stipulations and CL/T188-2004 standard is supported.
2.2 data store
Collector can be classified and be stored data, form the historical data of water, electricity, gas difference energy, can store nearest Dec the moon water number according to or the moon active energy data and nearest 64 days daily water consumptioies and day active energy data, nearest 24 hours integral points energy data of emphasis user water, electricity, gas can be preserved in addition.
2.3 optimum configurations and inquiry
Can remote inquiry or local to arrange and inquiry following parameters:
A) support to order during broadcast pair, collector clock is calibrated.
B) support to arrange and inquiry collection period, parameter such as table meter mailing address, communication protocol etc., and automatically can identify and adapt to different traffic rates.
C) table address that energy issue according to concentrator or local communication interface is arranged, generates the table address concordance list showing meter automatically.
2.4 logout
The events such as collector energy recording parameters changes, check meter unsuccessfully, terminal is stopped/powered on.
2.5 data transmission
A) uplink communication adopts modular design, has warm connection function, can communicate with concentrator, receives and responds the order of concentrator, to concentrator transmission data.
B) relay forwarding, the communication relay forwarding between concentrator and other collector supported by collector.
C) transition of communications, the communication mode of the convertible upper and lower channel of collector and communication protocol.
D) for the collector having memory function, safety prevention measure should be had to the transmission of significant data.
2.6 local function
A) there is the instructions such as power supply, duty, communications status.
B) local maintenance interface is provided, supports that handheld device is by local maintenance interface parameters and on-the-spot copy reading electric energy datas such as infrared communication mouths.Local parameter is arranged and check meter in scene should have permission and Password Management.
2.7 terminal maintenance
A) terminal has self-test, self-diagnostic function, finds that the component working of terminal should have record extremely.2.7.2 terminal initialization
B) after terminal receives the initialization command that main website issues, carry out initialization to hardware, parameter region, data field respectively, parameter region is set to default value, and data field resets, and controls to remove.
2.8 hardware description
Main system is made up of CPU, RS-485 interface circuit, M-BUS interface circuit, baseband circuit, demodulation chip, storer, reset/watchdog circuit, pilot lamp and the several parts of serial communication.
The advantages such as CPU: choosing have employed the 8BIT position STM8207CB of ST, and this MCU has the FLASH of built-in 128K as the program space, built-in 2K Byte-RAM, inner house dog, has 1 serial port, stable.
Storage chip: select FLASH chip EN25F10 as data space, realizes the hold function of electricity at least nearest 64 day zero point every day.
Carrier chip: select Qingdao Neusoft carrier chip SSC1641, this chip adopts spread spectrum technic, BFSK modulation, half-duplex operation, high-level efficiency forward error correction capability, bit rate is up to 20.8k baud, centre frequency f0=270kHz, bandwidth BW=30kHz, have table number, alert event active upload function; Initiatively to collector MCU applied address, allow local without mailing address simultaneously.Operating temperature range :-40 DEG C ~+85 DEG C
RS-485: select TI company SN65LBC184D, this chip generally acknowledges in the industry reasonable 485 chips, and its inner integrated transient voltage resists, simultaneously to exceeding (+30 kV contact discharges of bus termination esd protection; + 15 kV bubble-discharges; + 15 manikins), can bear peak value is 400W overvoltage transition, and the message transmission rate in electrical noise environment is 250kbps; open failure protection receiver design; 1/4 unit load allows 128 devices to be connected to bus, and heat closes protection, lowly forbids the maximum 300 μ A of working current.
Pilot lamp: instruction power supply, uplink communication, downlink communication, device abnormality.
3, concentrator
Concentrator is the key equipment in intelligent remote automatic meter reading system.Its down channel has low voltage power line carrier and RS485 serial communication channels two kinds.Can by carrier channel automatic transcription and store various intelligent instrument, acquisition module and the other kinds carrier equipment with carrier communication function with can data, and gather the data of outside 485 gauge tables by RS485 channel; Simultaneously carry out exchanges data by up channel and main website or handheld device, its up channel adopts common communication net, supports client, server two kinds of communication modes, and adopts modular design, directly changes communication mode by replacing communication module.
3.1 data acquisitions and process
A) protocol tables counts: concentrator can gather the various energy data meeting host-host protocol from collector or RS-485 interface.The table meter type of current support is according to large class-mark 0, C, D, E, and little class-mark 0,1,2, protocol type DL/T645-1997, DL/T645-2007 combination is divided into 24 kinds.
B) direct current analog quantity acquisition: to some non-electric quantity monitoring points (as: temperature, pressure etc.), convert DC analogue quantity to through transducer; Concentrator can the non-electric quantity such as Real-time Collection DC analogue quantity measuring tempeature, pressure, and DC analogue quantity accuracy of measurement is in ± 1% scope.
C) quantity of state collection: concentrator Real-time Collection position of the switch state and other status information, should charge to internal memory when there is displacement and send this displacement signal or concentrator active reporting when the last main website inquiry to it.
D) event log data: the event log data of concentrator and electric energy meter record.
classification stores following data
A) platform district summary table data
B) household ammeter data:
3.3 master-slave mode
Concentrator can arrange and be chosen as master concentrator or from one of concentrator two kinds of mode of operations.Master concentrator can by cascade 485 interface (RS485II) cascade maximum 3 from concentrator, and by the remote up-link communication port of master concentrator and master station communication, thus realize master concentrator and cascade thereof from the exchanges data between concentrator and main website.The all concentrators participating in cascade only have one can be set to master concentrator, and all the other are from concentrator.
Master concentrator periodically inspection cascade from concentrator, when there being data active reporting demand from concentrator, by the data retransmission from concentrator to main website.
function during 3.4 school
Function when there is the broadcast school of main website to electric energy meter in function during collector terminal remote school and concentrator to system.
3.5 arrange function
By a distant place or this locality, initial operational parameter is set, interval of checking meter.To check meter the parameters such as cycle, and there is the measure preventing illegal authorized person from operating and guaranteeing data security.
self diagnosis and abnormal information writing function
Automatically carry out System self-test, discovering device (comprising communication) is abnormal carries out logout and warning.
logout
The event attribute that concentrator is arranged according to main website is according to critical event and the common event book of final entry.Event comprises concentrator parameter modification, checks meter unsuccessfully, concentrator stops/powers on, and clock of power meter is overproof.Concentrator can preserve nearest 500 logouts.
Critical event and the common event divide two queue records by the time sequencing occurred, and queue is pressed first-in first-out and refreshed.The content of every bar record comprises event type, time of origin and correlation circumstance.
A) critical event process
The critical event that main website is arranged, after event occurs, concentrator refreshes critical event counter contents in real time, notes down and notifies main website at once by ACD set or direct active reporting logout.
B) the common event process
The common event (as: concentrator power failure, out-of-limit record etc.) that main website is arranged, after event occurs, concentrator refreshes the common event counter contents in real time, makes logout, waits for main website inquiry.When concentrator power supply has a power failure at every turn, the beginning and ending time that record has a power failure and current electric flux.
power failure data are preserved
Have no progeny in communication power supply, rechargeable battery can continue power supply for concentrator, and can ensure with master station communication three times (reporting power-off event) and the ability of the 10min that normally works, Clock battery can keep data and clock more than one month.During power up, preserve data and do not lose, internal clocking normally runs.
other function
Remote software is downloaded: concentrator software realizes online software download by telecommunication channel.
Breakpoint transmission: when concentrator carries out remote software download, concentrator software should have breakpoint transmission ability.
Concentrator release information: concentrator can by local display or remote measurement inquiry concentrator version information.
Communication flows is added up: concentrator can add up the communication flows with main website.
Claims (6)
1. a long-range gas meter reading system, at least comprise management server (1), concentrator (2), collector (3), terminal list meter (4), it is characterized in that management server and concentrator are by wireless public network channel or the communication of ethernet communication mode, concentrator and collector are by low voltage power line carrier communication, and collector and terminal list meter adopt wireless radio frequency mode communication.
2. the long-range gas meter reading system of one according to claim 1, it is characterized in that described concentrator comprises data management system, data-carrier store, router, route memory, carrier channel, up channel, power supervisor, wherein up channel is connected with data management system, data management system is also also connected with route memory, power supervisor, carrier channel with data-carrier store, router, router, and carrier channel is also connected with power supervisor, low-voltage power line.
3. the long-range gas meter reading system of one according to claim 1, is characterized in that described collector comprises MCU, RS485 interface chip, M-BUS interface circuit, carrier chip, demodulation chip, storer, reset/house dog, pilot lamp and infrared communication unit composition.
4. the long-range gas meter reading system of one according to claim 1, it is characterized in that wireless telemetering gas-meter counted by described terminal list, be take diaphragm gas meter as metering base table, install flow signal acquisition module, wireless radio frequency transmission module, valve control module and power management module composition additional.
5. the long-range gas meter reading system of one according to claim 2, it is characterized in that data management system is technical grade processor, specification is AT91SAM9260; Router is ARM32 position, and model is Cortex-M3CPU; Up channel comprises RS485 cascade distribution transformer terminals, RS232, infrared, GPRS, RJ45 port.
6. the long-range gas meter reading system of one according to claim 3, is characterized in that MCU selects the 8BIT position STM8207CB of ST, built-in 2K Byte-RAM internal reset/house dog; Carrier chip selects Qingdao Neusoft carrier chip SSC1641; RS485 interface chip selects the SN65LBC184D of TI company.
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