CN105353683A - MBUS-based multifunctional energy consumption data acquisition controller - Google Patents
MBUS-based multifunctional energy consumption data acquisition controller Download PDFInfo
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Abstract
The invention discloses an MBUS-based multifunctional energy consumption data acquisition controller which comprises a microprocessor. The microprocessor is connected with an MBUS acquisition module, a wireless network module, an Ethernet module, a storage module and a display module. The MBUS acquisition module is connected with a data acquisition unit for collecting energy consumption data, and transmits the real-time data to the microprocessor; and the microprocessor calculates the data collected in real time, stores the calculated data to an on-chip ROM for first level cache, and exports the calculated data to an external FLASH to finish local storage of the data information, and meanwhile, transmits the calculated data to a server through a network. A collector has wired and wireless data transmission modes, so that the collector no longer only depends on the wired Ethernet for data transmission, requirement for installation environment is not high, and the collector is allowed to be more suitable for industrial occasions.
Description
Technical field
The present invention relates to data collecting field, be specifically related to a kind of multi-functional energy consumption data collecting controller based on MBUS.
Background technology
Along with China's expanding economy, the problem of government offices' office building and large public building highly energy-consuming becomes increasingly conspicuous.For strengthening the energy-saving run management to government offices' office building and large public building, on October 23rd, 2007, the Ministry of Construction, the Ministry of Finance combine and issued " implementation guideline about strengthening government offices' office building and large public building administration of energy conservation work " and " government offices' office building and large public building energy efficiency supervision construct and implement scheme ", require progressively to set up ministerial level, provincial, city-level, district's level energy consumption monitoring platform in China, finally set up on national network energy consumption monitoring platform.Energy consumption data acquisition device resolves, processes, stores and encrypt the key equipment of teletransmission to background data center in energy consumption monitoring acquisition subsystem.In order to existing intelligent lighting product organically combines, by intelligent lighting from open air introducing building, need on energy consumption data acquisition device, increase corresponding controlling functions, research and develop novel building energy consumption data acquisition controller.
Current data acquisition technology development is very fast, has had different data acquisition modes, but current data acquisition technology exists following not enough:
1, acquisition mode is single
Current data acquisition technology adopts 485 physical bus to carry out data acquisition mostly, and along with current residential block density increases, the density of collection point increases, and the inferior position of 485 buses is more obvious.Such as traffic rate can decline rapidly with the lengthening of transmission range, and this will have a strong impact on the real-time of image data; Especially wiring arbitrarily can not connect branch, and increase wiring difficulty, to site operation, personnel increase difficulty of construction.
2, the data transmission of wired ethernet is too dependent on
Data, often through 485 bus image data, are sent to data center by Ethernet by Current data acquisition technology.Do not have wired ethernet wiring in some occasion, this just makes collector transmission data be obstructed.Having made collector to infield has had higher requirement.
3, collocation method is complicated, not easy to operate
Current part manufacturer data collector is carried out on-the-spot data configuration by serial mode or is carried out the initial configuration of collector by remote server, and this method is not easy to on-the-spot installation operation.The configuration mode of on-the-spot serial ports depends on computer makes difficulty of construction increase, and has professional requirement to workmen.The configuration mode of server far-end, is on the one hand unfavorable for that site test operate, and another aspect easily configures make mistakes owing to being unfamiliar with field condition, directly causes the failure of data acquisition.
Summary of the invention
For solving the deficiency that prior art exists, the invention discloses a kind of multi-functional energy consumption data collecting controller based on MBUS, when cable-network transmission inconvenience, namely completing data transmission by wireless network.Adopt the collection completing data message of MBUS technology and 485 bus various ways, and support the self-adapting estimation of the various protocols of single port, complete the acquisition function to water, electricity, gas, hot and cold amount energy consumption data.
For achieving the above object, concrete scheme of the present invention is as follows:
A kind of multi-functional energy consumption data collecting controller based on MBUS, comprise microprocessor, described microprocessor is connected with MBUS acquisition module, wireless network module, ethernet module, memory module and display module respectively, MBUS acquisition module is connected with the data acquisition unit for gathering energy consumption data, and by real-time Data Transmission to microprocessor;
Described MBUS acquisition module is by MBUS bus interface and microprocessor communication; MBUS acquisition module comprises transtation mission circuit, receiving circuit and overload protecting circuit; transtation mission circuit completes the rapid translating of physical level by DCDC booster circuit and high-speed power metal-oxide-semiconductor; receiving circuit is by precision resister and the demodulation of voltage comparator circuit settling signal; electric current on the line that overload protecting circuit can detect MBUS bus in real time, plays the effect of overload protection.
Further; described MBUS acquisition module is MBUS modulating and demodulating signal circuit; comprise optical coupling isolation circuit; optical coupling isolation circuit output terminal is connected with level shifting circuit, push-pull power amplifier circuit, filtering output circuit successively; the output terminal of booster circuit is connected with level shifting circuit; optical coupling isolation circuit input end is connected with signal demodulating circuit, current sampling circuit, input protection circuit successively, and described filtering output circuit and input protection circuit are all communicated with data acquisition unit by MBUS bus.
Further, when microprocessor sends information to data acquisition unit and end instrument, signal enters level translation circuit through optical coupling isolation circuit, level translation circuit realizes the conversion of bus 36V level under independent booster circuit effect, the output signal of level translation circuit is amplified through push-pull power amplifier circuit, signal after amplification more after filtering output circuit carry out filtering, after amplification filtering, signal enters MBUS bus and sends to data acquisition unit.
Further, power amplification circuit adopts class B push-pull formula circuit, the input of signal is connected with the base stage of triode T3, the collector of triode T3 is connected with the collector of triode T1 by resistance Re3, triode T3 Fen tri-tunnel, one tunnel is connected with one end of resistance R1, another road is connected with the collector of triode T4, 3rd tunnel is connected with the base stage of triode T1, the other end of resistance R1 divides two-way, one tunnel is connected with the base stage of triode T4, another road is connected with one end of resistance R2, the other end of resistance R2 is connected with one end of resistance Rc3, the other end of resistance R2 and the emitter of triode T4 are connected with the base stage of triode T2 respectively, the other end of resistance Rc3 is connected with the emitter of triode T2, the collector of triode T2 is connected with the emitter of triode T1, the common port of triode T2 and triode T1 is output terminal.
Further, when microprocessor sends information to data acquisition unit and end instrument, when signal is in positive half cycle, T2 ends, and T1 bears amplification task; When signal is in negative half period, T1 ends, T2 bears amplification task, class B push-pull formula circuit is utilize Vbe expansion circuit to carry out the push-pull circuit be biased, the base current flowing into T4, much smaller than the electric current flowing through R1, R2, utilizes the Vbe of T4 pipe to be a fixed value substantially, suitably regulates the ratio of R1, R2, just can change the bias value of T1, T2, to reduce the distortion of signal.
Further; when data acquisition unit to microprocessor send information time, signal enters current sampling circuit through input protection circuit, after through signal demodulating circuit; use integrated transporting discharging that current signal is demodulated into voltage signal, enter microprocessor by optical coupling isolation circuit and complete communication.
Further, MBUS bus is half-duplex operation bus, transmit-receive position control on adopt mode be: by the automatic controlling party of kernel to, its bottom complete data send after, be switched to receiving mode by serial port drive.
Further, the data of Real-time Collection are carried out classifying, itemizing process according to capturing and coding by microprocessor, data after process are deposited ROM level cache to sheet, and by the statistical conversion after process to outside FLASH, the this locality completing data message stores, and energy consumption data is transmitted through the network to server end simultaneously.In microprocessor, the process of data is is simply added and subtracted or other algorithms as required.
Further, described microprocessor also communicates with real-time clock module, and microprocessor is powered by power module.
Further, described power module comprises Width funtion AC/DC module and coupled overvoltage crowbar, electric source filter circuit and linear voltage-stabilizing circuit.
Further, MBUS acquisition module adopts electric current and voltage modulation system, and be voltage modulated mode between microprocessor and instrument, sending data between instrument and microprocessor is current-modulation.
Further, during voltage modulated, logical one during stationary state, the voltage now in bus is 36V; During logical zero, bus voltage reduces 12V, becomes 24V, because the impedance of transmission line can change according to the distance of instrument and microprocessor, the size of bus quiescent current changes because of load, so in the virtual voltage outline of instrument end lower than 36V.Therefore instrument is the code stream that the skew according to 12V level instead of the absolute value according to voltage come on identification bus.What instrument adopted when microprocessor sends data is bus current modulation, and bus voltage remains unchanged.
Further, during current-modulation, when microprocessor sends " 1 " to instrument, instrument institute obtaining current is Imark; When sending " 0 ", the MBUS interface of instrument can add the pulse current of 11 ~ 20MA on Imark, and microprocessor detects this modulating current by current detection circuit, and what determine to receive is " 1 " or " 0 ".Instrument is the data acquisition unit for gathering energy consumption data.
Further, the topological structure network consisting that the described multi-functional energy consumption data collecting controller based on MBUS is suitable for comprises starlike type, looped cord, bus-type and fork type.
The above-mentioned multi-functional energy consumption data collecting controller based on MBUS can the order transmitted by up channel of reception server main frame, by down channel user's calorimeter operated accordingly simultaneously and manage, what up channel adopted is wired or wireless ethernet communication mode, and down channel then adopts M-Bus bus mode to be connected to acquisition instrument.
Beneficial effect of the present invention:
1, collection equipment has line and wireless two kinds of data transfer modes and no longer only depends on wired ethernet and do data transmission, thus not high to installation environment requirement degree, makes collector more be applicable to industrial occasions.
2, collection equipment is for the stable communication speed of high speed, can reach the reliable communicating distance of 2.4Km when the communication speed of 4.8kb/s.
3, the bus collection capacity of collector is many, when the reliable communicating distance of 4.8kb/s, 2.4Km, can have the capacity of nearly 500 contacts.
4, collector data acquisition bus allows the wire laying mode of the wiring branch arbitrarily such as serial type, star-like, intersection, and possesses extremely low quiescent dissipation, lowly reaches 200Ua.Use general twisted-pair power cable, nonpolarity two-wire system installs wiring.
5, between collector bus and system, isolation communication apparatus can ensure the reliably working when being struck by lightning, the electric current loop communication modes of constant current, strong interference immunity.
6, have the functions such as equipment logs in automatically, can hold plurality of devices, reserved multiple kinds, expansion is convenient; 200mA electric current can be provided to from equipment by bus.
Accompanying drawing explanation
Fig. 1 a-Fig. 1 c field wiring schematic diagram;
Fig. 2 collector systems schematic diagram;
Fig. 3 mbus module schematic diagram;
Fig. 4 MBUS modulating and demodulating signal circuit diagram;
Fig. 5 utilizes Vbe expansion circuit to carry out the complementary symmetry circuit schematic diagram be biased;
Fig. 6 intermodulation distortion schematic diagram.
Embodiment:
Below in conjunction with accompanying drawing, the present invention is described in detail:
As shown in Fig. 1 a-Fig. 1 c, the collector carrying M-BUS bus can adopt any one topological structure network consisting shown in figure, such as starlike type, looped cord, bus-type, fork type etc.In cable wiring manufacture process, in M-BUS bus, the connection of each node is regardless of positive and negative, nonpolarity requirement.This feature is that site operation maintenance brings great convenience, from designing the mistake solving artificial wiring and cause.This feature makes the expansion of M-BUS bus easier, safeguards more convenient than the site installation test of RS-485 bus.All nodes need not power supply separately, is all supplied by bus.This remote data being very suitable for the passive buses such as such as gas meter, flow meter, calorimeter, water meter gathers automatically.In network, arbitrary node short trouble can not cause network paralysis, reduces difficulty and the cost of maintenance.M-BUS bus communication is a kind of half duplex communication of applicable low-speed DAQ occasion, primary controller says the word to node and adopts level signal mode, the order of node response primary controller adopts current signal mode, which greatly enhances reliability and the antijamming capability of communication.
As shown in Figure 2, microprocessor also connects Ethernet by ethernet physical layer chip and realizes the communication with far-end server, also can complete the communication with server by the indirect access network based on ethernet of wireless network medium simultaneously.The data of Real-time Collection are also carried out classification subitem plus and minus calculation according to capturing and coding by microprocessor, such as electric consumption on lighting, air conditioning electricity, process water, urbanite water consumption etc., then data are deposited nandFLASH level cache to sheet, and simultaneously by statistical conversion extremely outside FLASH, the this locality completing data message stores, and data is transmitted through the network to server end simultaneously and carries out storing and analyzing.
Collector can the order transmitted by up channel of reception server main frame, to be operated accordingly simultaneously and manage by down channel to user's calorimeter.What up channel adopted is wired or wireless ethernet communication mode, and down channel then adopts M-Bus bus mode to be connected to acquisition instrument.Secondly, collector has NANDFlash and outside miniature SD card storage energy consumption data.And can by the function of liquid crystal display display module display collector and running status.
As above shown in Fig. 3, MBUS adopts electric current and voltage modulation system, and main frame is to being voltage modulated mode from machine, and from machine to main frame, send data is current-modulation.Main frame sends to the signal from machine and adopts voltage modulated, logical one during stationary state, and the voltage now in bus is 36V; During logical zero, bus voltage reduces 12V, becomes 24V, because the impedance of transmission line can according to changing from the distance of equipment and main equipment, the size of bus quiescent current changes because of load, so in the virtual voltage outline from equipment end lower than 36V.Therefore from equipment be the code stream that the skew according to 12V level instead of the absolute value according to voltage come identification bus.What adopt when sending data from machine to main frame is bus current modulation, and bus voltage remains unchanged.When sending " 1 " from machine to main frame, be Imark from machine institute obtaining current; When sending " 0 ", the MBUS interface of slave station can add the pulse current of 11 ~ 20MA on Imark.Main website detects this modulating current by current detection circuit, and what determine to receive is " 1 " or " 0 ".
As shown in Figure 4, when collector sends information to end instrument, signal enters level translation circuit module through light-coupled isolation, realized the conversion of bus 36V level by independent booster circuit, for ensureing that bus can drive abundant instrument, signal amplifies through power amplifier module, power amplification circuit adopts class B push-pull formula circuit, when signal is in positive half cycle, T2 ends, and T1 bears amplification task; When signal is in negative half period, T1 ends, and T2 bears amplification task, and the intermodulation distortion produced in amplification process as shown in Figure 6.The present invention adopts circuit as shown in Figure 5, utilizes Vbe expansion circuit to carry out the push-pull circuit be biased, flows into the base current of T4 much smaller than the electric current flowing through R1, R2.Therefore, utilize the Vbe of T4 pipe to be with fixed value substantially, as long as suitably regulate the ratio of R1, R2, just can change the bias value of T1, T2, to reduce the distortion of signal.Utilizing to recommend to export makes the rising edge in level change procedure and negative edge become more precipitous, thus the traffic rate of MBUS is increased substantially.After amplification filtering, signal enters MBUS bus and sends to target instrument.When instrument sends information to collector, signal enters current sample module through protection circuit, after through signal demodulating circuit, use integrated transporting discharging that current signal is demodulated into voltage signal, enter collector master chip complete communication by isolation optocoupler.Because MBUS bus is half-duplex operation bus, can adopt three kinds of modes on transmit-receive position controls, a kind of mode utilizes usleep interface, after sending data, waits for, then switch to receiving mode through time delay.This mode is applicable to baud rate and fixes, sends the constant situation of the length of data.The second way utilizes tcdrain interface (achieving this function in needing serial to drive), and call this interface, it can return after bottom data completes transmission.Because the response time of instrument is shorter, after interface returns, then it is late to be switched to receiving mode, and the response data of instrument there occurs conflict.Adopt the third mode in the present invention, namely by the automatic controlling party of kernel to, complete after data send at its bottom, be switched to receiving mode by serial port drive, this control is positioned at the bottom of system due to Control timing sequence, and priority level is high soon corresponding.
Two kinds of networked mode supported by collector of the present invention, simultaneously compatible for wired Ethernet and wireless network, can according to concrete installation environment and connected mode adaptive connection Ethernet, access services device main frame.
Collector of the present invention carries MBUS main website and controls transmission circuit, can support the data acquisition of 500 contacts simultaneously.
The present invention possesses NANDFLASH and outside miniature SD card on two kinds of data storage method sheets, maximum storage 3 years energy consumption data information.
The present invention possesses Presentation Function, and can realize local and remote two kinds of configuration modes.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (10)
1. the multi-functional energy consumption data collecting controller based on MBUS, it is characterized in that, comprise microprocessor, described microprocessor is connected with MBUS acquisition module, wireless network module, ethernet module, memory module and display module respectively, MBUS acquisition module is connected with the data acquisition unit for gathering energy consumption data, and by real-time Data Transmission to microprocessor;
Described MBUS acquisition module is by MBUS bus interface and microprocessor communication; MBUS acquisition module comprises transtation mission circuit, receiving circuit and overload protecting circuit; transtation mission circuit completes the rapid translating of physical level by DCDC booster circuit and high-speed power metal-oxide-semiconductor; receiving circuit is by precision resister and the demodulation of voltage comparator circuit settling signal; electric current on the line that overload protecting circuit can detect MBUS bus in real time, plays the effect of overload protection.
2. a kind of multi-functional energy consumption data collecting controller based on MBUS as claimed in claim 1, it is characterized in that, described MBUS acquisition module is MBUS modulating and demodulating signal circuit, comprise optical coupling isolation circuit, optical coupling isolation circuit output terminal successively with level shifting circuit, push-pull power amplifier circuit, filtering output circuit is connected, the output terminal of booster circuit is connected with level shifting circuit, optical coupling isolation circuit input end successively with signal demodulating circuit, current sampling circuit, input protection circuit is connected, described filtering output circuit and input protection circuit are all communicated with data acquisition unit by MBUS bus.
3. a kind of multi-functional energy consumption data collecting controller based on MBUS as claimed in claim 2, it is characterized in that, when microprocessor sends information to data acquisition unit and end instrument, signal enters level translation circuit through optical coupling isolation circuit, level translation circuit realizes the conversion of bus 36V level under independent booster circuit effect, the output signal of level translation circuit is amplified through push-pull power amplifier circuit, signal after amplification more after filtering output circuit carry out filtering, after amplification filtering, signal enters MBUS bus and sends to data acquisition unit.
4. a kind of multi-functional energy consumption data collecting controller based on MBUS as claimed in claim 3, it is characterized in that, power amplification circuit adopts class B push-pull formula circuit, the input of signal is connected with the base stage of triode T3, the collector of triode T3 is connected with the collector of triode T1 by resistance Re3, triode T3 Fen tri-tunnel, one tunnel is connected with one end of resistance R1, another road is connected with the collector of triode T4, 3rd tunnel is connected with the base stage of triode T1, the other end of resistance R1 divides two-way, one tunnel is connected with the base stage of triode T4, another road is connected with one end of resistance R2, the other end of resistance R2 is connected with one end of resistance Rc3, the other end of resistance R2 and the emitter of triode T4 are connected with the base stage of triode T2 respectively, the other end of resistance Rc3 is connected with the emitter of triode T2, the collector of triode T2 is connected with the emitter of triode T1, the common port of triode T2 and triode T1 is output terminal.
5. a kind of multi-functional energy consumption data collecting controller based on MBUS as claimed in claim 4, is characterized in that, when microprocessor sends information to data acquisition unit and end instrument, when signal is in positive half cycle, T2 ends, and T1 bears amplification task; When signal is in negative half period, T1 ends, T2 bears amplification task, class B push-pull formula circuit is utilize Vbe expansion circuit to carry out the push-pull circuit be biased, the base current flowing into T4, much smaller than the electric current flowing through R1, R2, utilizes the Vbe of T4 pipe to be a fixed value substantially, suitably regulates the ratio of R1, R2, just can change the bias value of T1, T2, to reduce the distortion of signal.
6. a kind of multi-functional energy consumption data collecting controller based on MBUS as claimed in claim 3; it is characterized in that; when data acquisition unit sends information to microprocessor; signal enters current sampling circuit through input protection circuit; after through signal demodulating circuit; use integrated transporting discharging that current signal is demodulated into voltage signal, enter microprocessor by optical coupling isolation circuit and complete communication.
7. a kind of multi-functional energy consumption data collecting controller based on MBUS as claimed in claim 1, it is characterized in that, the data of Real-time Collection are carried out classifying, itemizing process according to capturing and coding by microprocessor, data after process are deposited ROM level cache to sheet, and by the statistical conversion after process to outside FLASH, the this locality completing data message stores, and energy consumption data is transmitted through the network to server end simultaneously.
8. a kind of multi-functional energy consumption data collecting controller based on MBUS as claimed in claim 1, it is characterized in that, described microprocessor also communicates with real-time clock module, and microprocessor is powered by power module;
Described power module comprises Width funtion AC/DC module and coupled overvoltage crowbar, electric source filter circuit and linear voltage-stabilizing circuit.
9. a kind of multi-functional energy consumption data collecting controller based on MBUS as claimed in claim 1, it is characterized in that, MBUS acquisition module adopts electric current and voltage modulation system, and be voltage modulated mode between microprocessor and instrument, sending data between instrument and microprocessor is current-modulation.
10. a kind of multi-functional energy consumption data collecting controller based on MBUS as described in as arbitrary in claim 1-9, it is characterized in that, the topological structure network consisting that the described multi-functional energy consumption data collecting controller based on MBUS is suitable for comprises starlike type, looped cord, bus-type and fork type;
Multi-functional energy consumption data collecting controller based on MBUS can the order transmitted by up channel of reception server main frame, by down channel user's calorimeter operated accordingly simultaneously and manage, what up channel adopted is wired or wireless ethernet communication mode, and down channel then adopts M-Bus bus mode to be connected to acquisition instrument.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109634897A (en) * | 2018-12-20 | 2019-04-16 | 宁波三星智能电气有限公司 | Based on the nonstandard MBUS communication means of discrete |
| CN110608865A (en) * | 2019-11-05 | 2019-12-24 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel miniature measuring system |
| CN110784235A (en) * | 2019-12-04 | 2020-02-11 | 青岛东软载波科技股份有限公司 | M-BUS host transceiver circuit |
| CN111651398A (en) * | 2020-08-04 | 2020-09-11 | 湖南慧明谦信息技术有限公司 | Master station M _ BUS BUS interface circuit with sending and receiving state control |
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| CN110608865A (en) * | 2019-11-05 | 2019-12-24 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel miniature measuring system |
| CN110784235A (en) * | 2019-12-04 | 2020-02-11 | 青岛东软载波科技股份有限公司 | M-BUS host transceiver circuit |
| CN110784235B (en) * | 2019-12-04 | 2024-05-14 | 青岛东软载波科技股份有限公司 | M-BUS host receiving and transmitting circuit |
| CN111651398A (en) * | 2020-08-04 | 2020-09-11 | 湖南慧明谦信息技术有限公司 | Master station M _ BUS BUS interface circuit with sending and receiving state control |
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