CN104678167A - Intelligent electric energy meter and public utility meter reading system - Google Patents
Intelligent electric energy meter and public utility meter reading system Download PDFInfo
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- CN104678167A CN104678167A CN201510028124.5A CN201510028124A CN104678167A CN 104678167 A CN104678167 A CN 104678167A CN 201510028124 A CN201510028124 A CN 201510028124A CN 104678167 A CN104678167 A CN 104678167A
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Abstract
The invention discloses an intelligent electric energy meter, which comprises a signal acquisition unit, a signal processing unit, a communicator and a control unit, wherein the signal acquisition unit is used for accessing a power line of a power grid; the signal processing unit is used for receiving, calculating and processing a digital signal value of the signal acquisition unit; the communicator is used for receiving a communication request or transmitting data; the control unit is used for controlling the external data information acquisition and the data transmission of the intelligent electric energy meter, and is connected with the signal processing unit and the communicator. The invention further discloses a public utility meter reading system, which comprises a terminal system, the intelligent electric energy meter, and a water meter, a gas meter and a heat meter, which are in communication connection through an M-BUS, wherein the intelligent electric energy meter communicates with the terminal system through a wireless network. According to the intelligent electric energy meter and the public utility meter reading system, the use of electrical information data acquisition equipment and data concentrator equipment is avoided, different public utility meters are connected to the M-BUS for control and management, and the advantages of lower power consumption, stable communication, simple structure and low cost are achieved.
Description
The application is divisional application, and original bill application number is 2012102998418, and the applying date is on August 22nd, 2012, and application people is Holley Metering Group Co., Ltd.
Technical field
The present invention relates to utility commodity (such as water, electricity, rock gas etc.) surveying instrument instrument field, in more specific words it, the present invention relates to the intelligent electric energy meter of a kind of alternate data collector or concentrator devices, and comprise the automatic meter reading system of this intelligent electric energy meter.
Background technology
The remote meter reading mode of civilian instrument carries out communication by a data acquisition unit by RS485 bus and data are copied and accepted, and then these data sent to a data concentrator devices, then carry out communication and data upload by concentrator and data managing terminal system.And contrary, the order of data managing terminal system also needs by terminal system, and---this annexation of concentrator---collector---electric energy meter sends and transmits.
Therefore, need assembling collector and concentrator devices in addition, for the user of dispersion is installed, the ammeter of its indoor installing is extremely not suitable for the communication scheme re-using RS485 or similar wireless mode, arbitrary grade of intermediate node fault all can cause rear class table meter to carry out digital independent, even and if employ GPRS communication modes, then need to install independent GPRS external module equally, and needing the special SIM card of embedding and battery to use, cost is higher.
And all send data to collector equipment by table meter in current civilian instrument field, the most novel technology is the effective connection using the form of heartbeat frame to maintain a data communication, namely often cross one-period timed sending self-defining inquiry frame, avoid answering equipment to interrupt this because waiting as long for and connect.If it will be understood by those skilled in the art that and send data in this way, a large amount of heartbeat frames will increase communication realize and expense undoubtedly, such as, use GPRS network to carry out communication, then the information that sends needs to pay communication fee to network operator.Meanwhile, this mode causes continuing to increase of the data processing amount of front end processor in AMR system.
Summary of the invention
The present invention is intended to the defect solving prior art existence, designs a kind of intelligent electric energy meter and installs centralized automatic meter-reading (AMR) system of this intelligent electric energy meter, eliminate data acquisition equipment and concentrator that in prior art, AMR system must use.In a preferred embodiment of the invention, using the equipment of intelligent electric energy meter as a server or client class, it directly can be set up with external data collection management terminal and effectively be connected reliably in real time, eliminate the process that data send and sorting processes, avoid data transmission may produced problem and power consumption simultaneously, simultaneously can not because having installed multiple assembly the cost of increase table meter and volume weight.
In another preferred embodiment of the present invention, by the mode of M-BUS bus, multiple utility meter (such as water meter, gas meter or hotlist) is connected to intelligent electric energy meter of the present invention, copies technology in the data connection realizing multiple table.Similarly, by mode setting data collecting device in an effective coverage of bus, obtain the data message of other instrument (comprising electric energy meter), data acquisition of the prior art and sorting function device can be substituted like this, also eliminate the puzzlement of field wiring.
In order to realize above-mentioned purpose of design, technical scheme 1 of the present invention, design a kind of intelligent electric energy meter, be equiped with intercouple processor together and controller wherein, processor is used for receiving and process electric power energy consumption data information, and receiving the data command of controller transmission, simultaneous processor can control again the data message that described controller obtains external source, or external device terminal sends data command.
In order to realize above-mentioned purpose of design, technical scheme 2 of the present invention, is designed a kind of utility meter kilowatt meter reading-out system system, which includes the utility meter of aforesaid intelligent electric energy meter and other types, connected by bus mode.
Technical scheme 1: a kind of intelligent electric energy meter, it is arranged between electric network power line and power grid user load, comprising: signal gathering unit, for accessing electric network power line, obtaining further its electric current and voltage signal and converting electric power digital signal value to; Signal processing unit, for receiving these electric power digital signal values and carrying out calculating and data processing; Communication terminal, for receiving communication request or sending data; Comprise further: control module, obtain the external data information of described intelligent electric energy meter for controlling and send data, described control module is connected with signal processing unit and communication terminal by several interfaces.
Further, in a preferred embodiment of the invention, comprise transformer PT and the power-supply device of the operating voltage for providing intelligent electric energy meter intraware, for line voltage and electric current being converted into the operating voltage of 5V and 15V needed for signal processing unit and control module.
Further, in a preferred embodiment of the invention, set a power control terminal in a control unit, for the communication voltage of communication control end, because the frequency needed for dissimilar communication is different with power consumption, so need to judge communication type in advance by control module, carry out PORT COM setting subsequently, then Communication Control is carried out to communication terminal.
Further, in a preferred embodiment of the invention, comprise the LCD display for showing electric energy consumption consumption and external data information, it and control module are electrically connected to each other.
Further, in a preferred embodiment of the invention, respectively UART interface is set on signal processing unit and control module, for mutual transmission and the reception of data message between the two.In a FLASH unit or RAM of signal processing unit, setting data gathers module and interface class, setting data process module and interface class order in FLASH or RAM of control module.
In a preferred embodiment of the invention, when electric energy meter normally works, signal processing unit sends data acquisition command CHECK_M to control module, or communication interface class order SMS_PROMPT, to control control module, data acquisition is carried out to external unit, such as carry out electric quantity data to other electric energy meters in an effective communication region to gather, make intelligent electric energy meter of the present invention realize the function of a data acquisition equipment with this.
In another preferred embodiment of the present invention, when electric energy meter normally works, control module sends data processing command STAT_M to signal processing unit, makes electric energy meter of the present invention as a data concentrator devices, realize the sorting to electric power energy consumption data and process using this.
Technical scheme 2: a kind of utility meter kilowatt meter reading-out system, it comprises terminal system, and comprises foregoing intelligent electric energy meter, comprises water meter, gas meter and hotlist further.Wherein, described intelligent electric energy meter and water meter, gas meter and hotlist be by M-BUS bus in addition communication be connected, described intelligent electric energy meter is by carrying out communication between wireless network and terminal system.
Further, in a preferred embodiment of the invention, be equiped with for receiving and the response unit of reply data information in described water meter, gas meter and hotlist, described intelligent electric energy meter obtains public commodity consumption data message, in this, as a data acquisition equipment by M-BUS bus to water meter, gas meter and hotlist.
Further, in a preferred embodiment of the invention, described intelligent electric energy meter is that control module by wherein arranging sends data message to water meter, gas meter and hotlist and obtains order.
Further, in a preferred embodiment of the invention, described intelligent electric energy meter is by being connected with WLAN, WIFI, 3G or ADSL wireless mode between its communication terminal with terminal system.
The preferred embodiments of the present invention have abandoned the power information data acquisition equipment and data concentrator equipment that current kilowatt meter reading-out system must use, and are connected in M-BUS bus by different utility meters.1) the public commodity consumption data message of other utility meters is obtained by installing special integrated unit in ammeter, in this, as a data acquisition equipment.2) by the communication module of ammeter inside installing, can make it directly to carry out effective communication with terminal main station system and (such as pass through the networks such as GSM, 3G, WIFI, or the simplest PLC communication), and utilize the sorting function of inside chip realization to data, the function of a data concentrator devices is instead of with this.3) in the order of table meter inner setting, abandon in routine techniques and needed timed sending heartbeat frame to obtain response message, ensure telecommunication network table meter consistently online, and utilize bus power line to power, power consumption is lower, and communication robust, the present invention is simple for structure, reduce cost, there is significant social and economic benefits.
Accompanying drawing explanation
The preferred embodiment of the present invention will embodied in detail below by way of the mode with reference to accompanying drawing, and the identical function components/modules in figure is marked with same-sign, wherein
Fig. 1 is the functional structure schematic diagram of intelligent electric energy meter of the present invention;
Fig. 2 is the structure principle chart of kilowatt meter reading-out system of the present invention;
Fig. 3 is that the data of kilowatt meter reading-out system of the present invention send and the process flow diagram of replying.
Embodiment
Fig. 1 schematically shows the preferred embodiment of intelligent electric energy meter of the present invention, and it is arranged between electric network power line SPL and power grid user load LD, comprising:
Signal gathering unit 10, it is for accessing electric network power line SPL, obtains further its electric current I and voltage U signal and converts electric current I to
xand voltage U
xdigital signal value;
Signal processing unit 11, be preferably a CPU or dsp chip, it is for receiving these electric power digital signal values I
xand U
xand carry out calculating and data processing, by formula P=Σ I
xu
xform tire out multiplied go out the power consumption of power grid user, and show that electric energy consumption consumption and other administration of power networks terminals need the data message obtained by an integrator, such as reactive power, volt-ampere characteristic etc., these need the operation of CPU intraware function to draw;
Communication terminal 12, for receiving communication request or sending data, preferably includes an antenna element and communication chip;
Control module 13, is preferably a system-level MCU chip, obtains, or the data of inter-process are sent to external unit for controlling to the external data information of intelligent electric energy meter of the present invention.Control module 13 is connected with signal processing unit 11 and communication terminal 12 by several interfaces 131.
Further, in a preferred embodiment of the invention, comprise transformer PT and the power supply 15 of the operating voltage for providing intelligent electric energy meter intraware, for line voltage and electric current being converted into the operating voltage of 5V and 15V needed for dsp chip 11 and MCU chip 13.
Further, in a preferred embodiment of the invention, a power control terminal 132 is set in MCU chip 13, for the communication voltage of communication control end 12, because the frequency needed for dissimilar communication is different with power consumption, so need to judge communication type in advance by MCU chip 13, carry out PORT COM setting subsequently, then Communication Control is carried out to communication terminal 12.
Further, in a preferred embodiment of the invention, comprise the display 16 for showing electric energy consumption consumption and external data information, it and MCU chip 13 are electrically connected to each other.
Further, in a preferred embodiment of the invention, respectively UART interface is set on dsp chip 11 and MCU chip 13, for mutual transmission and the reception of data message between the two.In a FLASH unit or RAM of dsp chip 11, setting data gathers module and interface class, setting data process module and interface class in FLASH or RAM of MCU chip 13.
Such as, in a preferred embodiment of the invention, when electric energy meter normally works, dsp chip 11 sends data acquisition command CHECK_M to MCU chip 13, or communication interface class order SMS_PROMPT, carry out data acquisition to control MCU chip 13 pairs of external units, such as, electric quantity data is carried out to other electric energy meters in an effective communication region and gather, make electric energy meter of the present invention realize the function of a data acquisition equipment with this.
Such as, in another preferred embodiment of the present invention, when electric energy meter normally works, MCU chip 13 sends data processing command STAT_M to dsp chip 11, make electric energy meter of the present invention as a data concentrator devices using this, realize the sorting to electric power energy consumption data and process.
Fig. 2 schematically shows a kind of utility meter kilowatt meter reading-out system, and it comprises terminal system 5, and comprises foregoing intelligent electric energy meter 1, comprises water meter 2, gas meter 3 and hotlist 4 further.Wherein, intelligent electric energy meter 1 and water meter 2, gas meter 3 and hotlist 4 be by M-BUS bus form in addition communication be connected, intelligent electric energy meter 1 is by carrying out communication between wireless network and terminal system 5.
Further, in a preferred embodiment of the invention, be equiped with for receiving and the response unit 21,31,41 of reply data information in water meter 2, gas meter 3 and hotlist 4 respectively, intelligent electric energy meter 1 obtains public commodity consumption data message by M-BUS bus to water meter 2, gas meter 3 and hotlist 4, using as a data acquisition equipment.
Further, in a preferred embodiment of the invention, described intelligent electric energy meter 1 is that control module 13 by wherein arranging sends data message to water meter 2, gas meter 3 and hotlist 4 and obtains order.
Further, in a preferred embodiment of the invention, described intelligent electric energy meter 1 is by being connected with WLAN, WIFI, 3G or ADSL wireless mode between its communication terminal 12 with terminal system 5.
Further, in a preferred embodiment of the invention, M-BUS bus adopts wired or wireless mode, a kind of optional architectural can be provided simultaneously, increasing an encryption device at electric energy meter 1 and between water meter 2, gas meter 3 or hotlist 4, obtaining data in order to prevent system peripherals by improper means.
Under any circumstance, the communication baud rate of M-BUS bus is fixed as 2400, is set to even parity check, 8 data bit and 1 position of rest.
Further, in a preferred embodiment of the invention, AES-128 encryption mechanism is adopted or without encryption mechanism in communication process, the byte of encryption is only directed to application layer data content, wherein CRC check byte is not encrypted, if application layer data content is not the integral multiple of 16 bytes, then need to adopt frame byte to fill; Adopt two, CI territory label: the data adopting particular frame byte representation ammeter 1 to other types utility meter 2,3,4 are encryptions.
The equipment that M-BUS bus connects, except electric energy meter 1, all be provided with unique key, obtain key when equipment starts communication, such as, encipher interface class can be set as 0xyyH, wherein 0x represents the interface class order of encryption, and yy represents the data length of encryption, can set a minimum length value, initializing set is 00, needs system to edit out key value according to data header.
In a preferred embodiment of the invention, 1) ammeter 1 sends initialization operation frame to other types utility meter, such as gas meter 3, should unit 31 when receiving these Frames, need reply sheet byte frame E5H, need the communication state of initialization gas meter 3 simultaneously, prepare to start communication;
The Frame that ammeter sends is (wherein start character represents frame head, and stop character represents postamble):
| FIELD | start character | C field | A field | CS | stop character |
| DATA-HEX | 10 | 40 | xx | xx | 16 |
2) after the device initialize in bus completes, response unit 31 sends data message current for gas meter 3 to ammeter 1; Ammeter adopts request, and the request of data sent is:
| start character | C field | A field | CS | stop character |
| 10 | 5B | PAddress | School Affairs | 16 |
When gas meter 3 is once receive this claim frame, need to reply, reply content fixes gas consumption+Current Temperatures uncompensated gas consumption+gas meter 3 valve state of 12 byte-header content+current temperature compensation, replys data content:
3) when gas meter 3 receives as above Frame, then replied by response unit 31, need the address data in DATA district being set to gas meter 3 equipment simultaneously, communication is carried out in this address of use and gas meter 3 by ammeter 1 afterwards.
4) valve of gas meter 3 needs to carry out Long-distance Control by the control module (MCU chip) 13 of ammeter 1, terminal system 5 controls ammeter 1 by the mode of transmission information, this information is sent to gas meter 3 by described ammeter 1 again, and to carry out Long-distance Control, ammeter 1 sends Frame and is:
Wherein the XX data setting in DATA district is 00-closing valve; 01-valve opening door; 02-keeps current state.
5) ammeter 1 is after system time changes, and needs to carry out time calibration, after gas meter 3 receives the new clock information of ammeter 1, if the mistiming exceeds 60s, then needs set clock error flag, and using the time of ammeter 1 as the new time.
6) after gas meter 3 is resetted by ammeter 1, then the address distributed before resets, and the key of encryption resets, and reverts to original state, now ammeter 1 transmission control frame (special long frame), and gas meter 3 replys the correct information received.
These are only the preferred embodiment of the present invention, being intended to embody outstanding technique effect of the present invention and advantage, is not the restriction to technical scheme of the present invention.Those skilled in the art will appreciate that all are based on the amendment done by the technology of the present invention content, change or substitute technology feature, all should be covered by the technology category of claims of the present invention opinion.
Claims (13)
1. an intelligent electric energy meter, it is arranged between electric network power line and power grid user load, comprising: signal gathering unit (10), for accessing electric network power line, obtaining further its electric current and voltage signal and converting electric power digital signal value to, signal processing unit (11), for receiving these electric power digital signal values and carrying out calculating and data processing, communication terminal (12), for receiving communication request or sending data, it is characterized in that comprising further: control module (13), the external data information of described intelligent electric energy meter is obtained for controlling and sends data, described control module (13) is connected with signal processing unit (11) and communication terminal (12) by several interfaces (131), described signal processing unit (11) controls again the data message that described controller obtains outside M-BUS bus, or the device end externally in M-BUS bus sends data command, when this intelligent electric energy meter normally works, signal processing unit (11) sends data acquisition command CHECK_M to control module (13), or communication interface class order SMS_PROMPT, to control control module (13), data acquisition is carried out to the device end in outside M-BUS bus, make this intelligent electric energy meter as a data acquisition equipment using this, control module (13) sends data processing command STAT_M to signal processing unit (11), to make this intelligent electric energy meter as a data concentrator devices, realize the sorting to energy consumption data and process, control control module (13) is carried out electric quantity data to other these intelligent electric energy meters in an effective communication region and is gathered.
2. intelligent electric energy meter as claimed in claim 1, it is characterized in that: respectively UART interface (131) is set on signal processing unit (11) and control module (13), for mutual transmission and the reception of data message between the two.In a FLASH unit or RAM of signal processing unit (11), setting data gathers module and interface class, setting data process module and interface class in FLASH or RAM of control module (13).
3. intelligent electric energy meter as claimed in claim 1, it is characterized in that: the transformer PT and the power supply (15) that comprise the operating voltage for providing described intelligent electric energy meter intraware further, for electric network power line voltage and current being converted into the operating voltage of signal processing unit (11) and required 5V and 15V of control module (13).
4. intelligent electric energy meter as claimed in claim 1, it is characterized in that: a setting power control terminal (132) in control module (13), for the communication voltage of communication control end (12), frequency needed for dissimilar communication is different with power consumption, communication type is judged in advance by control module (13), carry out PORT COM setting subsequently, then Communication Control is carried out to communication terminal (12).
5. intelligent electric energy meter as claimed in claim 1, it is characterized in that: comprise the display (16) for showing electric energy consumption consumption and external data information further, it and control module (13) are electrically connected to each other.
6. a utility meter kilowatt meter reading-out system, it comprises terminal system (5), and comprise intelligent electric energy meter as claimed in claim 1 (1), comprise water meter (2) further, gas meter (3) and hotlist (4), it is characterized in that: described intelligent electric energy meter (1) and water meter (2), gas meter (3) and hotlist (4) be by M-BUS bus in addition communication connect, described intelligent electric energy meter (1) is by carrying out communication between wireless network and terminal system (5), wherein said water meter (2), be equiped with for receiving the response unit (21 with reply data information in gas meter (3) and hotlist (4), 31, 41), described intelligent electric energy meter (1) obtains public commodity consumption data message by M-BUS bus to water meter (2), gas meter (3) and hotlist (4), using as a data acquisition equipment, wherein increase an encryption device at electric energy meter (1) and between water meter (2), gas meter (3) or hotlist (4), prevent system peripherals from obtaining data by improper means.
7. utility meter kilowatt meter reading-out system as claimed in claim 6, is characterized in that: described intelligent electric energy meter (1) is that the control module (13) by wherein arranging sends data message acquisition order to water meter (2), gas meter (3) and hotlist (4).
8. utility meter kilowatt meter reading-out system as claimed in claim 6, it is characterized in that: all devices connected in described M-BUS bus, except intelligent electric energy meter (1), be all provided with unique key, obtain its respective key when equipment starts communication.
9. utility meter kilowatt meter reading-out system as claimed in claim 6, is characterized in that: the communication baud rate of described M-BUS bus is fixed as 2400, is set to even parity check, 8 data bit and 1 position of rest.
10. the utility meter kilowatt meter reading-out system as described in any one of claim 6 to 9, is characterized in that its means of communication comprise step:
1) intelligent electric energy meter (1) sends initialization operation frame to gas meter (3), when response unit (31) receives these Frames, reply sheet byte frame E5H, the communication state of initialization gas meter simultaneously (3), prepares to start communication;
2) after the device initialize in described M-BUS bus completes, response unit (31) sends data message current for gas meter (3) to intelligent electric energy meter (1), ammeter adopts request method, when gas meter (3) is replied once receive this claim frame, reply content fixes gas consumption+Current Temperatures uncompensated gas consumption+gas meter 3 valve state of 12 byte-header content+current temperature compensation;
3) when gas meter (3) receives as above Frame, then replied by response unit (31), need the address data in DATA district being set to gas meter (3) equipment, intelligent electric energy meter (1) will use this address and gas meter (3) to carry out communication afterwards simultaneously.
4) valve of gas meter (3) carries out Long-distance Control by the control module (13) of intelligent electric energy meter (1), a terminal system (5) controls intelligent electric energy meter (1) by the mode of transmission information, this information is sent to gas meter (3) by described intelligent electric energy meter (1) again, to carry out Long-distance Control.
11. utility meter kilowatt meter reading-out systems as claimed in claim 10, it is characterized in that comprising step further: intelligent electric energy meter (1) carries out time calibration after system time changes, after gas meter (3) receives the new clock information of ammeter (1), if the mistiming exceeds 60s, then need set clock error flag, and using the time of intelligent electric energy meter (1) as the new time.
12. utility meter kilowatt meter reading-out systems as claimed in claim 10, it is characterized in that comprising step further: after gas meter (3) is resetted by intelligent electric energy meter (1), the address distributed then resets, the key of encryption resets, revert to original state, now intelligent electric energy meter (1) transmission control frame (special long frame), gas meter (3) replys the correct information received.
13. utility meter kilowatt meter reading-out systems as claimed in claim 6, is characterized in that: described intelligent electric energy meter (1) is by being connected with WLAN, WIFI, 3G or ADSL wireless mode between its communication terminal (12) with terminal system (5).
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| CN201510028124.5A CN104678167B (en) | 2012-08-22 | 2012-08-22 | A kind of intelligent electric energy meter and utility meter kilowatt meter reading-out system |
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|---|---|---|---|
| CN201210299841.8A CN102830281B (en) | 2012-08-22 | 2012-08-22 | A kind of intelligent electric energy meter and utility meter kilowatt meter reading-out system |
| CN201510028124.5A CN104678167B (en) | 2012-08-22 | 2012-08-22 | A kind of intelligent electric energy meter and utility meter kilowatt meter reading-out system |
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| CN201210299841.8A Division CN102830281B (en) | 2012-08-22 | 2012-08-22 | A kind of intelligent electric energy meter and utility meter kilowatt meter reading-out system |
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| CN105931445A (en) * | 2016-06-23 | 2016-09-07 | 威海市天罡仪表股份有限公司 | Anti-interference wireless M-Bus short-distance meter reading control method |
| CN107230340A (en) * | 2017-04-07 | 2017-10-03 | 国网浙江省电力公司电力科学研究院 | A kind of electric energy meter copied available for multilist collection and system |
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| CN104678167B (en) | 2019-01-25 |
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