CN115225429A - Electric energy meter real-time data acquisition method based on service tunnel - Google Patents
Electric energy meter real-time data acquisition method based on service tunnel Download PDFInfo
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Abstract
The invention discloses a method for acquiring real-time data of an electric energy meter based on a service tunnel, which comprises the steps that an acquisition terminal acquires the data of the electric energy meter; after acquiring data, the acquisition terminal pushes the data in the same response format to a front proxy server through a service tunnel mode according to subscriptions of different service master stations; the prepositive proxy server stores the data after receiving the data and obtains the theme and effective information of the related data by analyzing the data issued by the acquisition terminal; when the service master station initiates a request to acquire data, the agent end directly sends the data to the service client end of the online request and updates the database. The method stores the data containing the time-space information on the site side collected by the collection terminal into the prepositive proxy database through the service tunnel between the collection terminal and the prepositive proxy server, and can directly obtain the data when the business application needs the data without calling and testing the data with the site side, thereby ensuring the timeliness of the data.
Description
Technical Field
The invention relates to the technical field of real-time data acquisition, in particular to a method for acquiring real-time data of an electric energy meter based on a service tunnel.
Background
When the current metering and collecting system obtains user load data, a mode of regularly reporting data to the master station by adopting a collecting frequency of 96 points 24 hours a day with a time interval of 15min is generally adopted. Actually, the main station or the acquisition terminal acquires offline historical statistic data of the electric energy meter, so that the power utilization state cannot be mastered in real time. Furthermore, the 645 protocol does not allow for flexible configuration and extraction of the acquisition data items, since it explicitly specifies the format of the different data items. A polling data acquisition mode is adopted between an original main station (client) and an acquisition/metering terminal (server), and the time delay of uploading data on a field side to the main station can generate different time delays according to different polling cycles, so that the timeliness of the data is poor.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and title of the application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The invention is provided in view of the above and/or the problems existing in the existing electric energy meter real-time data acquisition method based on the service tunnel.
Therefore, the problem to be solved by the present invention is how to provide a method for acquiring real-time data of an electric energy meter based on a service tunnel.
In order to solve the technical problems, the invention provides the following technical scheme: a method for acquiring real-time data of an electric energy meter based on a service tunnel comprises the steps that an acquisition terminal acquires electric energy meter data; after acquiring data, the acquisition terminal pushes the data in the same response format to a front proxy server through a service tunnel mode according to subscriptions of different service master stations; the prepositive proxy server stores the data after receiving the data and obtains the theme and effective information of the related data by analyzing the data issued by the acquisition terminal; when a service master station initiates a request to acquire data, an agent end directly sends the data to a service client end of an online request and updates a database; and the service master station performs data processing after acquiring the field real-time data to obtain high-quality data.
As a preferred scheme of the electric energy meter real-time data acquisition method based on the service tunnel, the electric energy meter real-time data acquisition method based on the service tunnel comprises the following steps: and when the data is pushed to the preposed proxy server through the service tunnel, the data is transmitted through the MQTT service layer.
As a preferred scheme of the electric energy meter real-time data acquisition method based on the service tunnel, the electric energy meter real-time data acquisition method based on the service tunnel comprises the following steps: the data processing comprises the steps that the acquisition terminal compares the time of the electric energy meter with the time of the base station of the accurate wireless communication module by acquiring the time of the electric energy meter, and if the difference exceeds the range specified by the service requirement, time correction is needed.
As a preferred scheme of the service tunnel-based electric energy meter real-time data acquisition method, the service tunnel-based electric energy meter real-time data acquisition method isThe method comprises the following steps: the time correction comprises the following steps of calculating the time deviation d between the electric energy meter and the acquisition terminal; if d is more than or equal to 1s, the accurate time T is obtained by utilizing the network time 0 Performing time correction processing on the electric energy meter; if the time deviation value d<1s, no time synchronization is required.
As a preferred scheme of the electric energy meter real-time data acquisition method based on the service tunnel, the electric energy meter real-time data acquisition method based on the service tunnel comprises the following steps: if the acquisition terminal does not give a response within 1 second when acquiring the time of the wireless communication module, the local time can be used as the time mark of the electric energy meter data; if the response time does not exceed 1 second, the time is available and can be used as the reference time for correcting the time.
As a preferred scheme of the electric energy meter real-time data acquisition method based on the service tunnel, the electric energy meter real-time data acquisition method based on the service tunnel comprises the following steps: the acquisition terminal sends a time setting message with accurate time to the electric energy meter by using network time to carry out time synchronization; in the correction process, the acquisition terminal waits for several seconds and then acquires the time of the electric energy meter again to further judge whether the time is accurate, if so, correct time data are sent to the master station, and the master station stores the data into the database after analysis.
As a preferred scheme of the electric energy meter real-time data acquisition method based on the service tunnel, the electric energy meter real-time data acquisition method based on the service tunnel comprises the following steps: the time offset d is calculated by the following steps,
calculating the time d required by the message to be transmitted from the acquisition terminal to the electric energy meter 1 ，
d 1 ＝L 1 ×N/V
In the formula, L 1 For the length of the issued message, N is the PDU coding length of each byte mapped in the link, and V is the transmission baud rate passing through the RS485 bus;
calculating transmission time delay d of electric energy meter for responding to acquisition request and sending data to terminal 2 ，
d 2 ＝L 2 ×N/V
In the formula, L 2 Responding the message length of the acquisition request for the electric energy meter;
d is the time required by the electric energy meter to process the message 4 ，
d 4 ＝d 3 -d 2 -d 1
In the formula, the total time d required for the terminal to send and receive messages is collected 3 ＝T 2 -T 1 ，T 1 For collecting the time of terminal transmission, T 2 The moment when the message is received for the acquisition terminal;
calculating the time deviation between the electric energy meter and the acquisition terminal as d,
d＝T 3 +d 2 -T 2
in the formula, T 3 The time of the electric energy meter data is obtained in order to analyze the time message data of the electric energy meter.
As a preferred scheme of the electric energy meter real-time data acquisition method based on the service tunnel, the electric energy meter real-time data acquisition method based on the service tunnel comprises the following steps: when the acquisition terminal acquires the data of the electric energy meter, different acquisition frequencies are adopted for different data items.
As a preferred scheme of the electric energy meter real-time data acquisition method based on the service tunnel, the electric energy meter real-time data acquisition method based on the service tunnel comprises the following steps: the collection frequency includes at least collection time intervals of 1s, 1min, 5min, 10min and 15 min.
As a preferred scheme of the electric energy meter real-time data acquisition method based on the service tunnel, the method comprises the following steps: the service tunnel mode is PUSH.
The invention has the beneficial effects that: through the service tunnel between the acquisition terminal and the preposed proxy server, the data containing the time-space information on the field side collected by the acquisition terminal is stored in the preposed proxy database, and can be directly acquired when the service application needs the data without calling and testing with the field side, so that the timeliness of the data is ensured, the reliability of the pushing process is ensured by combining with the MQTT protocol, and the system is very suitable for services which pay attention to the timeliness of the data, such as accurate load control, real-time electricity price, intelligent inspection and the like.
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In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
fig. 1 is a schematic diagram of a method for acquiring real-time data of an electric energy meter based on a service tunnel in embodiment 1.
Fig. 2 is a data push service schematic diagram of the method for acquiring real-time data of an electric energy meter based on a service tunnel in embodiment 1.
Fig. 3 is an overall flowchart of the method for acquiring real-time data of the electric energy meter based on the service tunnel in embodiment 1.
Fig. 4 is a schematic diagram of a time correction process of the method for acquiring real-time data of an electric energy meter based on a service tunnel in embodiment 1.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures of the present invention are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, the references herein to "one embodiment" or "an embodiment" refer to a particular feature, structure, or characteristic that may be included in at least one implementation of the present invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 to 4, a first embodiment of the present invention provides a method for acquiring real-time data of an electric energy meter based on a service tunnel, where the method for acquiring real-time data of an electric energy meter based on a service tunnel includes the following steps:
s1, collecting electric energy meter data by a collecting terminal;
s2, after the acquisition terminal acquires the data, pushing the data in the same response format to a front proxy server through a service tunnel mode according to the subscription of different service master stations according to needs, so that the data can be sent as soon as possible, and the real-time performance of the data is guaranteed;
s3, the prepositive proxy server stores the data after receiving the data and obtains the theme and effective information of the related data by analyzing the data issued by the acquisition terminal;
s4, when the service master station initiates a request to acquire data, the agent end directly transmits the data to the service client end of the online request and updates the database, so that the service master station can directly acquire the data from the front agent, and the timeliness of the data is improved;
and S5, the service master station performs data processing after acquiring the field real-time data to obtain high-quality data.
In step S1, the collection terminal may set different collection frequencies, such as 1S, 1min, 5min, 10min, and 15min, to quickly collect the data of the off-hook electric energy meter. Different collection frequencies are adopted for different data items, for example, the frequency that the positive and negative active total electric energy is collected once in 1s is adopted; the data of instantaneous three-phase voltage, current, power grid frequency and the like can adopt an acquisition time interval of 1 min; acquiring data items with the frequency of 15 min/time as forward and reverse active maximum demand and time data of maximum demand occurrence; the data items collected 1 time in 1 day include electric energy meter equipment information (version number and manufacturer information), power failure times, time, electric energy meter date and the like.
In step S2, when data is pushed to the pre-proxy server through the service tunnel, the data is transmitted through the MQTT service layer, and the MQTT protocol decouples the binding relationship between the client and the server in a one-to-one real-time interaction manner through the proxy server, thereby implementing separation of application and bearer transmission. When the QoS is 1, the message can be guaranteed to arrive at least once. MQTT guarantees QoS 1 by a simple ACK mechanism. The publisher will publish the message and wait for the response of the receiver's PUBACK message, if the response of the PUBACK message is not received within the specified time, the publisher will set the DUP of the message to 1 and resend the message. When receiving the message with the QoS of 1, the receiver should respond to the heartbeat message, and may receive the same message many times, and regardless of the DUP flag, the receiver will regard the received message as a new message and send a heartbeat message response.
In this embodiment, a specific implementation scheme of the PUSH mode is provided in combination with real-time fault monitoring of the master station on the field and the network device. The method comprises the steps that a data acquisition terminal device is assumed to be arranged in a network to acquire real-time information data of a monitored device state; a server device provides network service to the outside; the system comprises a plurality of main station service client platforms, and the states of equipment are monitored in real time through a graphical interface, so that auxiliary decision-making information is provided for operators. At this time, the server provides at least a "live-side data real-time reception" service and a "real-time data push" service. The actual receiving service is called by the acquisition terminal equipment, and the server receives data such as alarms and events from the field side and power utilization information; and the real-time sending service of the server is used for pushing real-time data to the client. As shown in fig. 3.
When a service master station (client) needs to acquire real-time field data, a notification sending gateway of a server side is accessed firstly by using a data push mode of network service. The gateway establishes connection between the two, and after the data acquisition terminal equipment on the site side acquires real-time data, the gateway calls the real-time data receiving network service of the server and transmits the data to the server.
After receiving the event alarm data, the server sends a notice to the client by means of the C/S connection established by the gateway, and informs the service master station that the server has received the real-time event alarm data. And after receiving the notification, the client calls the real-time data sending service of the server to acquire the data pushed by the server.
The timeliness of data transmission is guaranteed through the data acquisition process in the data pushing mode, and for services such as accurate load control, real-time electricity price and intelligent inspection, high real-time data are the basis of service operation analysis and execution processes. The data pushing mode utilizes the long connection established between the client and the server, and the server side data can be immediately pushed to the client when updated, so that the timeliness and the accuracy of the analysis and decision of the master station are improved.
In step S5, the data processing includes the step of comparing a difference between the time of the electric energy meter and the time of the base station of the accurate wireless communication module by the acquisition terminal, and if the difference exceeds a range specified by a service requirement, time correction is required.
As shown in fig. 4, the time correction process includes the steps of,
(1) Calculating the time deviation d between the electric energy meter and the acquisition terminal;
(2) If d is more than or equal to 1s, the accurate time T is obtained by utilizing the network time 0 Time correction of the electric energy meter, T 0 Acquiring absolute time from a base station through a 4G communication module for an acquisition terminal;
(3) If the time offset d <1s second, then no time synchronization is required.
(4) If the acquisition terminal does not give a response within 1 second when acquiring the time of the wireless communication module, the local time can be used as the time mark of the electric energy meter data; if the response time does not exceed 1 second, the time is available and can be used as the reference time for correcting the time.
(5) The acquisition terminal sends a time setting message with accurate time to the electric energy meter by using network time to carry out time synchronization; in the correction process, the acquisition terminal waits for several seconds and then acquires the time of the electric energy meter again to further judge whether the time is accurate, if so, correct time data are sent to the master station, and the master station stores the data into the database after analysis.
Wherein the time deviation d is calculated by the following steps,
calculating the time d required by the message to be transmitted from the acquisition terminal to the electric energy meter 1 ，
d 1 ＝L 1 ×N/V
In the formula, L 1 For the length of the transmitted message, N is the PDU coding length that each byte maps into the link, and V is the transmission baud rate through the RS485 bus (the communication baud rate of a general electric energy meter given by the 645 protocol is 2400 bps).
Calculating transmission time delay d of electric energy meter for responding to acquisition request and sending data to terminal 2 ，
d 2 ＝L 2 ×N/V
In the formula, L 2 And responding the message length of the acquisition request for the electric energy meter.
D is the time required by the electric energy meter to process the message 4 ，
d 4 ＝d 3 -d 2 -d 1
In the formula, the total time d required for the terminal to send and receive messages is collected 3 ＝T 2 -T 1 ，T 1 For collecting the time of transmission of the terminal, T 2 The time when the message is received by the acquisition terminal.
Calculating the time deviation between the electric energy meter and the acquisition terminal as d,
d＝T 3 +d 2 -T 2
in the formula, T 3 The data time of the electric energy meter is obtained in order to analyze the time message data of the electric energy meter.
In summary, the method stores the data containing the time-space information at the field side, which is collected by the collection terminal, into the pre-proxy database through the service tunnel between the collection terminal and the pre-proxy server, and can directly obtain the data when the service application needs the data without calling up and testing with the field side, so that the timeliness of the data is ensured, and the reliability of the pushing process is ensured by combining with the MQTT protocol, so that the method is very suitable for services which pay attention to the timeliness of the data, such as accurate load control, real-time electricity price, intelligent inspection and the like.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. A method for acquiring real-time data of an electric energy meter based on a service tunnel is characterized by comprising the following steps: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the method comprises the steps that a collection terminal collects data of an electric energy meter;
after acquiring data, the acquisition terminal pushes the data in the same response format to a front proxy server through a service tunnel mode according to subscriptions of different service master stations;
the prepositive proxy server stores the data after receiving the data and obtains the theme and effective information of the related data by analyzing the data issued by the acquisition terminal;
when a service master station initiates a request to acquire data, an agent end directly sends the data to a service client end of an online request and updates a database;
and the service master station performs data processing after acquiring the field real-time data to obtain high-quality data.
2. The service tunnel-based electric energy meter real-time data acquisition method as claimed in claim 1, wherein: and when the data is pushed to the front proxy server through the service tunnel, the data is transmitted through the MQTT service layer.
3. The service tunnel-based electric energy meter real-time data acquisition method according to claim 1 or 2, characterized in that: the data processing comprises the steps that the acquisition terminal compares the time of the electric energy meter with the time of the base station of the accurate wireless communication module by acquiring the time of the electric energy meter, and if the difference exceeds the range specified by the service requirement, time correction is needed.
4. The method for acquiring the real-time data of the electric energy meter based on the service tunnel according to claim 3, wherein the method comprises the following steps: the time correction comprises the following steps,
calculating the time deviation d between the electric energy meter and the acquisition terminal;
if d is more than or equal to 1s, the accurate time T is obtained by utilizing the network time 0 Performing time correction processing on the electric energy meter;
if the time offset d <1s second, then no time synchronization is required.
5. The service tunnel-based electric energy meter real-time data acquisition method as claimed in claim 4, wherein: if no response is given for more than 1 second when the acquisition terminal acquires the time of the wireless communication module, the local time can be used as the time mark of the electric energy meter data; if the response time does not exceed 1 second, the time is available and can be used as the reference time for correcting the time.
6. The service tunnel-based electric energy meter real-time data acquisition method as claimed in claim 5, wherein: the acquisition terminal sends a time setting message with accurate time to the electric energy meter by using network time to carry out time synchronization; in the correction process, the acquisition terminal waits for several seconds and then acquires the time of the electric energy meter again to further judge whether the time is accurate, if so, correct time data are sent to the master station, and the master station stores the data into the database after analysis.
7. A service tunnel based electric energy meter real-time data acquisition method according to any one of claims 4 to 6, characterized in that: the time offset d is calculated by the following steps,
calculating the time d required by the message to be transmitted from the acquisition terminal to the electric energy meter 1 ，
d 1 ＝L 1 ×N/V
In the formula, L 1 For the length of the transmitted message, N is the PDU coding length of each byte mapped in the link, and V is the transmission baud rate through the RS485 bus;
calculating transmission time delay d of electric energy meter for responding to acquisition request and sending data to terminal 2 ，
d 2 ＝L 2 ×N/V
In the formula, L 2 Responding the message length of the acquisition request for the electric energy meter;
d is the time required by the electric energy meter to process the message 4 ，
d 4 ＝d 3 -d 2 -d 1
In the formula, collectingTotal time d required for an end to send and receive a message 3 ＝T 2 -T 1 ，T 1 For collecting the time of transmission of the terminal, T 2 The moment when the message is received for the acquisition terminal;
calculating the time deviation between the electric energy meter and the acquisition terminal as d,
d＝T 3 +d 2 -T 2
in the formula, T 3 The data time of the electric energy meter is obtained in order to analyze the time message data of the electric energy meter.
8. The service tunnel-based electric energy meter real-time data acquisition method as claimed in claim 7, wherein: when the acquisition terminal acquires the data of the electric energy meter, different acquisition frequencies are adopted for different data items.
9. The service tunnel-based electric energy meter real-time data acquisition method as claimed in claim 8, wherein: the collection frequency includes at least collection time intervals of 1s, 1min, 5min, 10min and 15 min.
10. A service tunnel based electric energy meter real-time data acquisition method according to any one of claims 1, 8 and 9, characterized by: the service tunnel mode is PUSH.
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| CN116582772B (en) * | 2023-03-29 | 2024-01-16 | 四川辰鳗科技有限公司 | Electric energy data acquisition method, system, electronic equipment and medium |
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Application publication date: 20221021 |