CN101710883A - Multi-protocol data acquisition gateway for intelligent building and data acquisition method thereof - Google Patents
Multi-protocol data acquisition gateway for intelligent building and data acquisition method thereof Download PDFInfo
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Abstract
The invention relates to a multi-protocol data acquisition gateway for an intelligent building and a data acquisition method thereof, and relates to the technical field of networks. The multi-protocol data acquisition gateway solves the technical problems of complex structure, simple function, low reliability and few compatible meters in a data acquisition unit system. The gateway comprises a CPU module and a network communication module, wherein the network communication module is connected with the CPU module through a bus and provides a network interface. The gateway also comprises different types of data acquisition modules and a plurality of data service modules, wherein each data acquisition module is connected with the CPU module through a bus, and the different types of data acquisition modules provide different field device interfaces; the plurality of data service modules provide custom data for users through a network communication interface; and the data acquisition modules and the data service modules are respectively connected with an embedded database, and access data through the embedded database. The multi-protocol data acquisition gateway and the data acquisition method have the characteristics of capacity of acquiring different types of data, realization of real-time data processing simultaneously, and convenient on-site supervision and analysis.
Description
Technical field
The present invention relates to a kind of gateway and collecting method thereof, relate in particular to a kind of multi-protocol data acquisition gateway and collecting method thereof that is used for intelligent building.
Background technology
Along with the develop rapidly that China's economic is built, the key issue that necessary emphasis was considered when energy-conservation and environmental issue had become China's economic development.China building energy consumption account whole society energy consumption is more than 27% at present, and unit construction area energy consumption is higher than developed country's level far away.Energy measurement is the prerequisite that realizes building energy conservation, and measuring equipment is the basis of realizing energy measurement accurately, and the formulation of building energy consumption standard, the assessment of energy consumption, energy-conservation operational management and the assessment of energy-saving effect all be unable to do without data acquisition system accurately and reliably.Yet because monitoring, diagnosis, the analytical technology of building energy consumption comparatively lacked, clear not enough to the understanding of each link energy consumption situation of building energy resource system, this has become an outstanding problem of restriction building energy-saving renovation.
Domestic data acquisition unit mainly contains two big classes now: a class is directly to be transferred to data center after the data acquisition, to be responsible for the storage and the analysis of data by data center; Another kind of is the field instrument data are gathered and to carry out simple storage.These data acquisition units mostly need the scene to be configured and to safeguard, its system configuration complexity, function is simple, reliability is low, compatible instrument is few.Except that needs are gathered ammeter data, also need the instrument of multiple distinct interface is gathered in the building supervisory control system, so development interface is abundant, powerful, compatible good data acquisition unit is the needs of intelligent building.
The controller and the transducer of tradition TT﹠C system field control layer are to be electrically connected by wired mode mostly, have been subjected to the restriction of topology layout and cabling.In recent years, the progress universal, electronic technology of the communication technology is data acquisition, particularly the development of remote meter reading technology provides advantage, aspect radio meter register, the Chang Yong kilowatt meter reading-out system that is based on short message relatively, it generally is to utilize GSM (Global System for MobileCommunication, global system for mobile communications) short message module that ammeter information is transferred to data center by the GSM common network.But because the GSM network signal is subjected to terminal signaling power, equipment present position to influence bigger, the problem of message transmission delay and packet loss has reduced the reliability and the real-time of system, can't guarantee the safe operation of field apparatus, therefore, the collection in worksite device also needs the ability of monitoring in real time except data acquisition.In addition, a lot of not only data acquisition amounts of data acquisition system are big, also need the data that collect are analyzed, diagnosed, to the requirement of real-time, reliability than general remote meter reading height, as energy management in the building and environmental monitoring are built.
Summary of the invention
Technical problem to be solved by this invention provides a kind of multi-protocol data acquisition gateway and collecting method thereof that is used for intelligent building, can gather the data of number of different types, realizes the data in real time processing simultaneously, is convenient to on-site supervision and analysis.
The present invention solves the problems of the technologies described above the technical scheme that adopts to provide a kind of multi-protocol data acquisition gateway that is used for intelligent building, described gateway comprises CPU module and network communication module, described network communication module links to each other with described CPU module by bus and network interface is provided, wherein, described gateway also comprises: polytype data acquisition module, each data acquisition module links to each other with described CPU module by bus, and the data of different types acquisition module provides different field device interfaces; A plurality of data service modules provide customization data by network communication interface for the user; Described data acquisition module links to each other with embedded database respectively with data service module, and fetches data by embedded database.
Above-mentioned multi-protocol data acquisition gateway, wherein, described a plurality of data acquisition module comprises provides the multi-protocol data acquisition of serial ports module, adc circuit interface standard collection of simulant signal module is provided, the switching value IO Multiplexing module of switching value interface is provided and is connected the Zigbee of wireless communication interface is provided on the serial ports wireless transport module.
Above-mentioned multi-protocol data acquisition gateway, wherein, described a plurality of data service modules comprise transmission module on embedded web page server module, embedded graphic display module and the UDP message.
The present invention also provides a kind of multi-protocol data acquisition method that adopts above-mentioned gateway for solving the problems of the technologies described above, comprise the steps: that (a) links to each other described gateway respectively by different field device interfaces with corresponding field apparatus, and by network communication interface access to LAN or Internet network; (b) described gateway is dispatched each data acquisition module successively by polling mode, gather initial data, each data acquisition module is by the collection of sample states parameter control data, parsing, error correction and checking, and the normal data after will handling deposits embedded database in, simultaneously abnormal data reported to the police; (c) each data service module extracts corresponding data according to user's request or customized information from embedded database; (d) if disposed data center, described gateway by transmission module on the UDP message to data center's unload database.
Above-mentioned multi-protocol data acquisition method, described sample states parameter is by the online setting of cgi script.
Above-mentioned multi-protocol data acquisition method, the IP address of described data center is by the online setting of cgi script.
Above-mentioned multi-protocol data acquisition method, described data acquisition module is for being connected Zigbee wireless transport module on the serial ports, the configured port of described serial ports is electrically connected with the I/O port of restarting port and CPU module, when the field apparatus of the different baud rates of poll, the baud rate of the described serial ports of configuration is also restarted this serial ports earlier.
Above-mentioned multi-protocol data acquisition method, described data service module is embedded web page server module and embedded graphic display module, after described data service module extracts corresponding data according to user request or customized information from embedded database, by embedded graphic display module curve plotting, curve plotting is embedded in returns to the user in the webpage then earlier.
The present invention contrasts prior art following beneficial effect: multi-protocol data acquisition gateway and the collecting method thereof that is used for intelligent building provided by the invention, can gather the data of number of different types, realize the data in real time processing simultaneously, be convenient to on-site supervision and analysis.In addition, multi-protocol data acquisition gateway provided by the invention has the function of data acquisition and data center concurrently, but self-organizing system, also can be as required and upper data center flexible networking.
Description of drawings
Fig. 1 is a multi-protocol data acquisition gateway hardware configuration schematic diagram of the present invention;
Fig. 2 is a multi-protocol data acquisition gateway system architecture schematic diagram of the present invention;
Fig. 3 is a multi-protocol data acquisition gateway networking schematic diagram of the present invention.
Among the figure:
11 gateways, 12 on-the-spot master meter 13Internet networks
14 the one Zigbee modules, 15 on-the-spot IO equipment
21 embedded web page server modules, 22 embedded graphic display modules
23UDP data upload module 24 embedded databases
25 switching value IO Multiplexing modules, 26 multi-protocol data acquisition modules
27 standard analog signal acquisition modules 28 the 2nd Zigbee module
31 field apparatuss, 32 local users
34 long-distance users of 33 data centers
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is a multi-protocol data acquisition gateway hardware configuration schematic diagram of the present invention.
See also Fig. 1, gateway 11 provided by the invention adopts the embedded hardware platform, and described embedded hardware platform comprises CPU module and peripheral circuit.Wherein, the CPU module adopts the S3C2440ARM cpu chip of Samsung, and peripheral circuit comprises memory circuit, reset circuit, clock circuit, supply module and the peripheral interface module that 64M～128M NAND FLASH forms.Peripheral interface module comprises network communications circuits module, serial port circuit module, ADC (analog to digital converter) circuit module, switching value IO circuit module.
Fig. 2 is a multi-protocol data acquisition gateway system architecture schematic diagram of the present invention.
Please be simultaneously referring to Fig. 1 and Fig. 2, gateway 11 provided by the invention adopts the modular system framework, and above-mentioned embedded hardware platform is divided into CPU module, network communication module and polytype data acquisition module.Described network communication module links to each other with described CPU module by bus with polytype data acquisition module, network communication module provides network interface to link to each other with Internet network 13, wherein, polytype data acquisition module comprises switching value IO Multiplexing module 25, provide the switching value interface to link to each other, gather switching value with on-the-spot IO equipment 15; Multi-protocol data acquisition module 26 provides serial ports to link to each other with serial device, as linking to each other with a Zigbee module 14; Standard analog signal acquisition module 27 provides the adc circuit interface to link to each other with on-the-spot master meter 12, gathers analog signal.In order to realize radio communication function, gateway 11 can be on serial ports built-in connection the 2nd Zigbee module 28, provide wireless communication interface by the 2nd Zigbee module 28.That is to say, connect that main frame (gateway) has three kinds of modes with the physical connection of slave (field apparatus): (1) is direct-connected by physical layer RS485/RS232 bus for serial ports; (2) pass through the RS485/RS232 bus parallel connection between slave to the Zigbee radio receiving transmitting module, main frame links to each other with the Zigbee transceiver module, and principal and subordinate's machine communicates by the Zigbee wireless module; (3) principal and subordinate's machine is by the carrier of standard analog amount signal---and twisted-pair feeder carries out direct-connected.
In addition, described gateway 11 also comprises embedded database 24 and a plurality of data service module, and described data acquisition module and data service module are by described embedded database 24 swap datas.A plurality of data service modules comprise transmission module 23 on Boa embedded web page server module 21, GD embedded graphic display module 22 and the UDP message, and a plurality of data service modules are by network communication interface and data center, and local user and long-distance user link to each other.
Fig. 3 is a multi-protocol data acquisition gateway networking schematic diagram of the present invention.
Multi-protocol data acquisition gateway provided by the invention has the function of data acquisition and data center concurrently, but self-organizing system also can continue flexible networking with upper data center as required.See also Fig. 3, it is as follows that the present invention adopts above-mentioned gateway to carry out the process of acquisition process data:
At first, gateway 11 is as host computer (main frame), field apparatus 31 is as slave computer (slave), field apparatus 31 comprises intelligent electric meter and various kinds of sensors, acquisition gateway 11 can connect a plurality of slave computer image data hand in hand by its polytype field device interface, and by network communication interface access to LAN or Internet network.For example: (1) uses multi-protocol data acquisition module 26, links to each other with the three-phase multifunctional ammeter with single-phase by serial ports, adopts DLT-645 agreement or Modbus agreement reading of data, and deposits the data that read in database; (2) link to each other with on-the-spot master meter 12 by standard analog signal acquisition module 27, the standard analog signal change-over circuit is responsible for the instrument standard signal is converted into the signal of 0～3.3V, send into A/D convertor circuit, the S3C2440 chip is by AD driver reading of data, and range transforms and handles the back and deposits database in; (3), the switching value of equipment state is read and stores, and some equipment are controlled by the control technological requirement by switching value IO Multiplexing module 25; (4), make multi-protocol gateway and field instrument and the multifunction electric meter of supporting the RS485/RS232 interface carry out radio communication by Zigbee wireless transport module 28.Because different serial equipments often have different baud rates, two I/O ports of the S3C2440ARM cpu chip of gateway 11 are respectively with the configured port of Zigbee wireless transceiver with restart port and be electrically connected, by program these two I/O ports are controlled, realized setting, made gateway carry out the poll collection through the Zigbee wireless transceiver to the channel data of different baud rates by serial ports to the operational mode of Zigbee wireless transceiver.
Secondly, acquisition gateway 11 is dispatched each data acquisition module successively, promptly to carrying out the poll collection from electromechanics metering primary instrument and transducer, various data acquisition modules use different agreements, therefore can compatible DL-T645 agreement, MODBUS rtu protocol and standard analog amount signal, wherein ammeter data is gathered by the DL-T645 agreement, and environmental data such as CO2 concentration, temperature, humidity, illuminance are by Modbus agreement or the data acquisition of standard analog amount.
Then, 11 pairs of data that collect of acquisition gateway are resolved, error correction, checking, make mistakes then to abandon again and gather; Correctly then sampled data is carried out preliminary treatment, transform as analog signal being carried out range, and deposit data in Sqlite embedded database 24; Simultaneously acquisition gateway 11 can also be reported to the police to abnormal state of affairs to the Various types of data analysis that collects, processing, dump etc.; Concrete sample states is provided with parameter, and as frequency acquisition, analog quantity bound alarm parameters can also be according to on-the-spot needs by the online setting of CGI (CGI(Common gateway interface)) program.
Then, acquisition gateway 11 calls a plurality of data service modules, such as calling Boa embedded web page server module 21, sets up the Web Server based on the B/S framework, 34 pairs of local datas of local user 32 and long-distance user are conducted interviews, can show the data of gathering with form, graphic form; Call GD embedded graphic display module 22, the ammeter historical data in the database and the real time data form with tendency chart is intuitively shown; The above-mentioned interrupt mode that can adopt the user to ask of calling also can adopt and regularly interrupt calling according to customized information.Gateway 11 calls 22 pairs of data that collect of embedded graphic display module and carries out curve display, can be used for correlation of data and exceptional value analysis.The specific implementation method is that cgi script calls the GD graphics package curve plotting of being transplanted to ARM, figure is embedded in returns to the user in the webpage then.This gateway shows that the ammeter data gathered in real time and the key step of environmental parameter are: create a variable deposit blank image-＞color of coupling figure-＞for image fill above color-＞call database data draw the png form gather in real time curve-＞destroy image stream with the release internal memory.
At last, if system configuration upper data center, acquisition gateway 11 can also be by transmission module on the UDP message 23 to data center's 33 unload databases; The configuration parameter of upper data center also passes through the online setting of cgi script as the IP address at data center, and the data that realization will collect are issued the data center of assigned ip address, make data center obtain local energy consumption and environmental information.
In sum, gateway provided by the invention, has polytype data acquisition module, adopt Sqlite database 24, core as multi-protocol gateway storage and processing, have following advantage: (1) polytype data acquisition module concentrates in together, stable and reliable operation, and data acquisition process is accurate; (2) networking flexibility, big mini system is all suitable, and is Wireless/wired all suitable; (3) monitoring in real time, real-time statistic, chart graph direct; (4) system itself is energy-conservation, and maximum energy consumption is less than 10W; (5) control conveniently, easily learn, inner complexity is to user transparent; (6) cost is suitable, and retractility is good, and no matter scale is all at user's tolerance interval; (7) self-organizing system also can be by department of government concerned, office's requirement data format reported data.
Gateway provided by the invention and collecting method thereof, the scope of application comprises: monitoring in real time of the subitem power consumption of the newly-built or existing building of public buildings such as (1) government, office, school, factories and miness, machine room, hospital, commercial building and diagnosis; (2) building the energy-saving monitoring in building site; The energy consumption monitoring of (3) municipal works, municipal communal facility and management; (4) the elevator electricity consumption monitoring and the analysis of air-conditioning unit, high level/small sized multiple story building; (5) electric power networks/regional power load and power-factor monitoring, operation of power networks STABILITY MONITORING; (6) energy-saving monitoring of residential quarters or only building; (7) electricity consumption, the air-conditioning to different owners monitored in the commercial building, and more reasonably sharing commons can expense.
Though the present invention discloses as above with preferred embodiment; right its is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can doing a little modification and perfect, so protection scope of the present invention is when with being as the criterion that claims were defined.
Claims (8)
1. a multi-protocol data acquisition gateway that is used for intelligent building comprises CPU module and network communication module, and described network communication module links to each other with described CPU module by bus and network interface is provided, and it is characterized in that described gateway also comprises:
Polytype data acquisition module, each data acquisition module links to each other with described CPU module by bus, and the data of different types acquisition module provides different field device interfaces;
A plurality of data service modules provide customization data by network communication interface for the user;
Described data acquisition module links to each other with embedded database respectively with data service module, and fetches data by embedded database.
2. the multi-protocol data acquisition gateway that is used for intelligent building according to claim 1, it is characterized in that, described polytype data acquisition module comprises provides the multi-protocol data acquisition of serial ports module, provide the adc circuit interface the standard analog signal acquisition module, the switching value IO Multiplexing module of switching value interface is provided and is connected the Zigbee of wireless communication interface is provided on the serial ports wireless transport module.
3. the multi-protocol data acquisition gateway that is used for intelligent building according to claim 1 is characterized in that, described a plurality of data service modules comprise transmission module on embedded web page server module, embedded graphic display module and the UDP message.
4. a multi-protocol data acquisition method that adopts the described gateway of claim 1 is characterized in that described method comprises the steps:
(a) described gateway is linked to each other with corresponding field apparatus respectively by different field device interfaces, and by network communication interface access to LAN or Internet network;
(b) described gateway is dispatched each data acquisition module successively by polling mode, gather initial data, each data acquisition module is by the collection of sample states parameter control data, parsing, error correction and checking, and the normal data after will handling deposits embedded database in, simultaneously abnormal data reported to the police;
(c) each data service module extracts corresponding data according to user's request or customized information from embedded database;
(d) if disposed data center, described gateway by transmission module on the UDP message to data center's unload database.
5. multi-protocol data acquisition method according to claim 4, it is characterized in that, described data acquisition module is for being connected Zigbee wireless transport module on the serial ports, the configured port of described serial ports is electrically connected with the I/O port of restarting port and CPU module, when the field apparatus of the different baud rates of poll, the baud rate of the described serial ports of configuration is also restarted this serial ports earlier.
6. multi-protocol data acquisition method according to claim 4, it is characterized in that, described data service module is embedded web page server module and embedded graphic display module, after described data service module extracts corresponding data according to user request or customized information from embedded database, by embedded graphic display module curve plotting, curve plotting is embedded in returns to the user in the webpage then earlier.
7. multi-protocol data acquisition method according to claim 4 is characterized in that, described sample states parameter is by the online setting of cgi script.
8. multi-protocol data acquisition method according to claim 4 is characterized in that, the IP address of described data center is by the online setting of cgi script.
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Application publication date: 20100519 |