CN105207351A - Smart electric meter information broadcasting method - Google Patents
Smart electric meter information broadcasting method Download PDFInfo
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- CN105207351A CN105207351A CN201510521101.8A CN201510521101A CN105207351A CN 105207351 A CN105207351 A CN 105207351A CN 201510521101 A CN201510521101 A CN 201510521101A CN 105207351 A CN105207351 A CN 105207351A
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Abstract
The invention discloses a smart electric meter information broadcasting method comprising the steps that information frames are established according to user addresses and data information to be broadcasted, and the information frames include address characters, control characters and data characters; a power grid host transmits the information frames in a broadcasting mode; a smart electric meter receives the information frames and compares the address characters in the information frames; the control characters of the information frames are read after the address characters of the information frames and the preset address characters of the smart electric meter are met through confirmation; and after the smart electric meter identifies the digital display instruction of the control characters, the data information in the data characters is read according to the preset mapping table and the data information is digitally displayed. The objective of the smart electric meter information broadcasting method is that a method of smart communication of the power grid host with the smart electric meter is established on the hardware basis of communication of the smart electric meter and the power grid host; and then broadcasting of the smart electric meter can be performed by the power grid host through the method, and the broadcasted data information can be digitally displayed on the liquid crystal displayer arranged at the surface of the smart meter so that viewing is facilitated for users.
Description
Technical field
The present invention relates to the intelligent electric meter communications field, particularly relate to a kind of method of intelligent electric meter being carried out to information broadcasting.
Background technology
Intelligent electric meter is the intelligent terminal in smart electric grid system, no longer belongs to traditional electric energy meter already.
Intelligent electric meter outside the function of measuring based on traditional electric energy meter basic electricity amount, in order to the use adapting to intelligent grid and new forms of energy has the intelligentized function such as data communication function, anti-stealing electricity function of two-way multiple rate function of measuring, user side controlling functions, plurality of data transmission modes further.
For the data communication function of intelligent electric meter, mostly existing intelligent electric meter is with state's electricity 645 standards (DL/T645-1997 People's Republic of China (PRC) power industry standard) for standard and electrical network main frame carry out communication.
In general, intelligent electric meter is only that preselected time section transferred to electrical network main frame with the power information such as electrical gradient and power consumption uniaxially; Electrical network main frame is adjusted by intrinsic computing formula after receiving above-mentioned electricity consumption data; After accounting draws corresponding expense, notify user by network operation personnel by note or other modes.
But user learns that mostly the mode of its electricity cost is note or paper document, comparatively inaccessible; And the emergency notice that national grid mechanism issues, such as power off notifying, wait and also cannot be passed to user fast and accurately.
Summary of the invention
The object of the invention is to overcome or slow down at least above-mentioned shortcoming, a kind of method of intelligent electric meter being carried out to information broadcasting be provided hereby, comprise the following steps:
(1) with station address to be broadcast and data message, set up information frame, information frame comprises address character, command character and data symbols;
(2) electrical network main frame, sends information frame in a broadcast mode;
(3) intelligent electric meter receives information frame and address character in comparison information frame;
(4) after the address character of comformed information frame conforms to the address character that intelligent electric meter is preset, the command character of information frame is read;
(5), after the digital display instruction of intelligent electric meter identification command character, data message in data symbols is read and digital display data message according to the mapping table preset.
Preferably,
In (1), the information frame of foundation also comprises preposition starting character;
In (2), the address character of intelligent electric meter comparison information frame after identifying preposition starting character.
Further, in (1), the information frame of foundation also comprises rearmounted starting character;
In (4), after the address character preset at the address character of comformed information frame and intelligent electric meter conforms to, the rearmounted starting character of first identifying information frame, then read command character.
Further,
In (5) after normal digital display data message, normal response frame set up by intelligent instrument, and is back to electrical network main frame;
Abnormal digital display data message in (5), exception response frame set up by intelligent instrument, and is back to electrical network main frame.
Further, set up information frame based on DL-T645-2007 communication protocol, described information frame comprises successively:
Preposition start-of-frame, definite value is 68H,
Address field, variables A 0 ~ A5,
Rearmounted start-of-frame, definite value is 68H,
Control code, variable C,
Data length field, variables L,
Data field, variable N1 ~ Nm,
Check code, CS,
End mark, definite value 16H;
Electrical network main frame is by RS-485 bus sending information frame extremely each intelligent electric meter;
Intelligent electric meter described arbitrarily receives described information frame, and after identification definite value is the preposition start-of-frame of 68H, whether the 6 bit address codes that the A0 ~ A5 in compare address territory is prepared in advance with intelligent electric meter are consistent;
After the A0 ~ A5 determining intelligent electric meter 6 bit address codes prepared in advance and address field is consistent respectively, identification definite value is the rearmounted start-of-frame of 68H;
After identification definite value is the rearmounted start-of-frame of 68H, the function command that the variable C inquiring about control code in control code menu prepared in advance represents;
After determining that the variable C of control code represents digital display instruction, read the variables L of data length field, to determine data length;
The data message digital display that the variable N1 ~ Nm of data field comprises is read according to mapping table prepared in advance.
Further,
A., in (7), after the normal digital display data message of intelligent electric meter, set up ammeter box normal response frame and be back to electrical network main frame;
B., in (7), after the abnormal digital display data message of intelligent electric meter, set up ammeter box exception response frame and be back to electrical network main frame;
Digital display after electrical network main frame identification normal response frame or exception response frame.
Further, when the variable C of described control code represents digital display instruction, definite value 04H is set as.
The present invention is intended to, on the hardware foundation based on intelligent electric meter and electrical network host communication, set up electrical network main frame carries out intelligent communication method to intelligent electric meter; By method of the present invention, electrical network main frame can be broadcasted intelligent electric meter by said method, and the data message of digital display broadcast in the liquid crystal display of intelligent surface, be convenient to user and check.
Accompanying drawing explanation
Describe these and other aspect of the present invention in further detail now with reference to appended accompanying drawing, it is depicted as currently preferred embodiment of the present invention.Wherein:
Fig. 1 is the flow chart of the present embodiment to the method that intelligent electric meter is broadcasted;
Fig. 2 is the framework map of information frame in the present embodiment;
Fig. 3 is the flat expanded view of byte of each several part in Fig. 2;
Fig. 4 is the framework map of control code in Fig. 3.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.
The present embodiment is intended to the hardware architecture utilizing existing intelligent electric meter and electrical network host communication, sets up a kind of method broadcasted intelligent electric meter.
The intelligent instrument of China's most area is all using DL-T645-2007 communication protocol and supplementary agreement thereof as standard implementation; So, the present embodiment is to meet the hardware architecture of the intelligent electric meter of DL-T645-2007 communication protocol and supplementary agreement thereof and electrical network main frame exemplarily property.
Particularly, the method broadcasted intelligent electric meter of the present embodiment is as shown in Figure 1:
Step one: as shown in Figure 2, form based on the host request frame of DL-T645-2007 communication protocol foundation sets up information frame, information frame by left-to-right be preposition start-of-frame D0, address field D1, rearmounted start-of-frame D2, control code D3, data length field D4, data field D5, check code D6 and end mark D7 successively, every part forms by one or more byte.
Composition graphs 3 and following explanation, representation manners frame each several part:
Preposition start-of-frame D0, the beginning of identification information frame, its value is 68H=01101000B;
It is A0 ~ A5 respectively that address field D1, address field D1 are made up of 6 bytes, and every byte is 2 binary-coded decimals, and the address field D1 of 12 bit lengths is in order to represent the identity identification information such as ammeter box numbering, user number, device number of user;
Rearmounted start-of-frame D2, represent that intelligent electric meter and electrical network main frame are shaken hands successfully, start the instruction identifying control code, its value is also 68H=01101000B;
Control code D3, variable is C, and variable C comprises 8 characters and D0 ~ D7 (as shown in Figure 4, this frame of D7 is information frame or acknowledgement frame, D6 represents that what return is normal response frame or exception response frame in intelligence vindication, D5 represents with or without subsequent data frame, D4 ~ D0: digital display and answering code);
Data length field D4, variable is that L represents data length;
Data field D5, comprises variable N1 ~ Nm, is formed by data message by GB2312 coding;
Check code D6, variable is CS;
End mark D7, the end of identification information frame, its value be 16H=00010110B,
Step 2: electrical network main frame is by RS-485 bus sending information frame extremely each intelligent electric meter.
Step 3: arbitrary intelligent electric meter receives information frame, and after identification definite value is the preposition start-of-frame D0 of 68H, whether the 6 bit address codes that the A0 ~ A5 of compare address territory D1 is prepared in advance with intelligent electric meter are consistent.
Step 4: after the A0 ~ A5 determining intelligent electric meter 6 bit address codes prepared in advance and address field D1 is consistent respectively, identification definite value is the rearmounted start-of-frame D2 of 68H.
Step 5: after identification definite value is the rearmounted start-of-frame D2 of 68H, whether the variable C of inquiry control code D3 is 04H (the present embodiment setting 04H is the digital display instruction of information frame).
Step 6: after determining that the variable C of control code D3 represents digital display instruction, reads the variables L of data length field D4, to determine data length.
Step 7: the data message that variable N1 ~ Nm that the process chip of intelligent electric meter reads data field D5 according to the mapping table of typing in advance comprises digital display.
It is worth mentioning that, because intelligent electric meter needs by the variable N1 ~ Nm in the D5 of decoded data territory, digital display Chinese subtitle, then electrical network main frame is when setting up information frame, and the variable N1 ~ Nm of data field D5 preferably adopts the coded system of GB2312.
Step 8:
A., in step 7, after the normal digital display data message of intelligent electric meter, set up ammeter box normal response frame and be back to electrical network main frame.The normal response frame of the present embodiment and the difference of information frame are, the variable C of its control code D3 is 84H, and data length is 00H..
B., in step 7, after the abnormal digital display data message of intelligent electric meter, set up ammeter box exception response frame and be back to electrical network main frame.The exception response frame of the present embodiment and the difference of information frame are, the variable C of its control code D3 is C4H, and data length is 01H..
Step 9: electrical network main frame feeds back its result after the Frame returned is normal response frame or exception response frame, preferably its result of digital display being identified by control code D3.
In addition, the present embodiment is when the variables L of data length is greater than 50, and electrical network main frame is by sending multiple information frame, and intelligent electric meter passes through the data message fragment of splicing entrained by multiple information frame, with the data message that digital display is complete.
Specifically needing the data field D5 end of non-end of transmission to add character, hexadecimal B4FDD0F8, add the character representing that data message is complete at the data field D5 end of end of transmission, hexadecimal CDEAB1CF.
In addition, adding by electrical network main frame the start bit 0 being convenient to identify when information frame sends in the front end of preposition start frame, at end mark D7 end interpolation even parity bit P and position of rest 1, be convenient to intelligent electric meter identification.
Claims (7)
1. intelligent electric meter is carried out to a method for information broadcasting, it is characterized in that comprising the following steps:
(1) with station address to be broadcast and data message, set up information frame, information frame comprises address character, command character and data symbols;
(2) electrical network main frame, sends information frame in a broadcast mode;
(3) intelligent electric meter receives information frame and address character in comparison information frame;
(4) after the address character of comformed information frame conforms to the address character that intelligent electric meter is preset, the command character of information frame is read;
(5), after the digital display instruction of intelligent electric meter identification command character, data message in data symbols is read and digital display data message according to the mapping table preset.
2. method of intelligent electric meter being carried out to information broadcasting according to claim 1, is characterized in that,
In (1), the information frame of foundation also comprises preposition starting character;
In (2), the address character of intelligent electric meter comparison information frame after identifying preposition starting character.
3. method of intelligent electric meter being carried out to information broadcasting according to claim 2, is characterized in that:
In (1), the information frame of foundation also comprises rearmounted starting character;
In (4), after the address character preset at the address character of comformed information frame and intelligent electric meter conforms to, the rearmounted starting character of first identifying information frame, then read command character.
4. method of intelligent electric meter being carried out to information broadcasting according to claim 3, is characterized in that:
A., in (5) after normal digital display data message, normal response frame set up by intelligent instrument, and is back to electrical network main frame;
B. abnormal digital display data message in (5), exception response frame set up by intelligent instrument, and is back to electrical network main frame.
5. method of intelligent electric meter being carried out to information broadcasting according to claim 4, is characterized in that:
(1) set up information frame based on DL-T645-2007 communication protocol, described information frame comprises successively:
Preposition start-of-frame, definite value is 68H,
Address field, variables A 0 ~ A5,
Rearmounted start-of-frame, definite value is 68H,
Control code, variable C,
Data length field, variables L,
Data field, variable N1 ~ Nm,
Check code, CS,
End mark, definite value 16H;
(2) electrical network main frame is by RS-485 bus sending information frame extremely each intelligent electric meter;
(3) described arbitrarily intelligent electric meter receives described information frame, and after identification definite value is the preposition start-of-frame of 68H, whether the 6 bit address codes that the A0 ~ A5 in compare address territory is prepared in advance with intelligent electric meter are consistent;
(4) after the A0 ~ A5 determining intelligent electric meter 6 bit address codes prepared in advance and address field is consistent respectively, identification definite value is the rearmounted start-of-frame of 68H;
(5) after identification definite value is the rearmounted start-of-frame of 68H, the function command that the variable C inquiring about control code in control code menu prepared in advance represents;
(6) after determining that the variable C of control code represents digital display instruction, the variables L of data length field is read, to determine data length;
(7) read according to mapping table prepared in advance the data message digital display that the variable N1 ~ Nm of data field comprises.
6. method of intelligent electric meter being carried out to information broadcasting according to claim 5, is characterized in that:
A., in (7), after the normal digital display data message of intelligent electric meter, set up ammeter box normal response frame and be back to electrical network main frame;
B., in (7), after the abnormal digital display data message of intelligent electric meter, set up ammeter box exception response frame and be back to electrical network main frame;
(8) digital display after electrical network main frame identification normal response frame or exception response frame.
7. method of intelligent electric meter being carried out to information broadcasting according to claim 6, is characterized in that:
When the variable C of described control code represents digital display instruction, be set as definite value 04H.
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| CN201510521101.8A CN105207351B (en) | 2015-08-21 | 2015-08-21 | The method that intelligent electric meter is broadcasted into row information |
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| CN201510521101.8A CN105207351B (en) | 2015-08-21 | 2015-08-21 | The method that intelligent electric meter is broadcasted into row information |
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Cited By (2)
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| CN113437998A (en) * | 2021-06-24 | 2021-09-24 | 国网北京市电力公司 | Operation and maintenance debugging method and system, nonvolatile storage medium and processor |
| CN114165895A (en) * | 2021-11-18 | 2022-03-11 | 青岛海信日立空调系统有限公司 | Central air conditioner and energy consumption obtaining method thereof |
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| US20140161114A1 (en) * | 2012-12-06 | 2014-06-12 | Elster Solutions, Llc | Phase detection in mesh network smart grid system |
| CN204389672U (en) * | 2014-11-24 | 2015-06-10 | 国网辽宁省电力有限公司营口供电公司 | Intelligent electric meter serial ports DL/T645 communication protocol on-line quick detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113437998A (en) * | 2021-06-24 | 2021-09-24 | 国网北京市电力公司 | Operation and maintenance debugging method and system, nonvolatile storage medium and processor |
| CN114165895A (en) * | 2021-11-18 | 2022-03-11 | 青岛海信日立空调系统有限公司 | Central air conditioner and energy consumption obtaining method thereof |
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