CN116985664B - Charging pile monitoring and management method and system based on communication protocol - Google Patents
Charging pile monitoring and management method and system based on communication protocol Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/68—Off-site monitoring or control, e.g. remote control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
The application discloses a charging pile monitoring and managing method and a system based on a communication protocol, belonging to the field of monitoring and managing, wherein the method comprises the following steps: acquiring communication environment information of the charging pile; acquiring position distribution coordinates of charging piles in a preset area; dividing a preset area to obtain a first divided area and a second divided area; generating a first charging pile set corresponding to the first divided area and a second charging pile set corresponding to the second divided area; setting a protocol conversion module; collecting charging pile monitoring signals of the first divided area and the second divided area, and generating a charging pile signal database; and managing the charging piles in the preset area according to the charging pile signal database. The application solves the technical problem of poor monitoring and management effects of the charging pile caused by the fact that the monitoring signals cannot be accurately acquired in the prior art, and achieves the technical effects of accurately acquiring the monitoring signals of the charging pile, realizing differentiated management and improving the monitoring and management effects of the charging pile.
Description
Technical Field
The application relates to the field of monitoring management, in particular to a charging pile monitoring management method and system based on a communication protocol.
Background
With the popularization of electric vehicles and the rapid development of charging piles, monitoring and management of charging piles are becoming more and more important. At present, the charging pile monitoring management method adopts a mode of monitoring all the charging piles based on a unified monitoring mode, and the characteristics of communication environment differences and position distribution among the charging piles are not considered, so that monitoring signals are inaccurate and monitoring effects are not ideal. Meanwhile, for the charging pile remotely located in the preset area, effective monitoring and management cannot be realized due to the limitation of the communication distance.
Disclosure of Invention
The application provides a charging pile monitoring management method and a charging pile monitoring management system based on a communication protocol, and aims to solve the technical problem that in the prior art, the charging pile monitoring management effect is poor due to the fact that monitoring signals cannot be accurately acquired.
In view of the above problems, the present application provides a charging pile monitoring and management method and system based on a communication protocol.
The application discloses a first aspect, which provides a charging pile monitoring and management method based on a communication protocol, comprising the following steps: acquiring communication environment information of the charging pile, wherein the communication environment information is based on the communication environment between the charging pile and a control center; acquiring position distribution coordinates of the charging piles in a preset area from a control center; dividing a preset area based on communication environment information to obtain a first divided area and a second divided area; generating a first charging pile set corresponding to the first divided area and a second charging pile set corresponding to the second divided area, wherein the communication distance between the battery management system of each charging pile in the first divided area and the control center is smaller than that between the battery management system of each charging pile in the second divided area and the control center; setting a protocol conversion module, wherein the protocol conversion module is used for butting the charging piles in the second division area through the embedded gateway and carrying out signal expansion on signals sent by the charging piles in the second division area; collecting charging pile monitoring signals of the first divided area and charging pile monitoring signals of the second divided area after signal expansion, and generating a charging pile signal database; and managing the charging piles in the preset area according to the charging pile signal database.
In another aspect of the disclosure, a charging pile monitoring management system based on a communication protocol is provided, and the system comprises: the communication environment acquisition module is used for acquiring communication environment information of the charging pile, wherein the communication environment information is based on the communication environment between the charging pile and the control center; the position distribution coordinate module is used for acquiring position distribution coordinates of the charging piles in a preset area from the control center; the preset area dividing module is used for dividing the preset area based on the communication environment information to obtain a first divided area and a second divided area; the charging pile set generation module is used for generating a first charging pile set corresponding to the first division area and a second charging pile set corresponding to the second division area, wherein the communication distance between the battery management system of each charging pile in the first division area and the control center is smaller than that between the battery management system of each charging pile in the second division area and the control center; the charging pile butt joint module is used for setting a protocol conversion module, and the protocol conversion module is used for butt joint of the charging piles in the second division area through the embedded gateway and for signal expansion of signals sent by the charging piles in the second division area; the signal database generation module is used for collecting the charging pile monitoring signals of the first divided area and the charging pile monitoring signals of the second divided area after signal expansion, and generating a charging pile signal database; and the charging pile management module is used for managing the charging piles in the preset area according to the charging pile signal database.
One or more technical schemes provided by the application have at least the following technical effects or advantages:
because the communication environment information of the charging piles is acquired, the preset areas are accurately divided, and charging pile sets corresponding to different divided areas are generated; the protocol conversion module is arranged to expand the charging pile signals in the second divided area so as to improve the monitoring effect; through collecting and managing the monitoring signals of the charging pile, a charging pile signal database is formed, and the charging pile in a preset area is effectively managed according to the database.
The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.
Drawings
Fig. 1 is a schematic flow chart of a possible charging pile monitoring and managing method based on a communication protocol according to an embodiment of the present application;
fig. 2 is a schematic flow chart of a possible signal transmission in a charging pile monitoring and managing method based on a communication protocol according to an embodiment of the present application;
fig. 3 is a schematic diagram of a possible structure of a charging pile monitoring management system based on a communication protocol according to an embodiment of the present application.
Reference numerals illustrate: the system comprises a communication environment acquisition module 11, a position distribution coordinate module 12, a preset area division module 13, a charging pile set generation module 14, a charging pile docking module 15, a signal database generation module 16 and a charging pile management module 17.
Detailed Description
The technical scheme provided by the application has the following overall thought:
the embodiment of the application provides a charging pile monitoring and managing method and system based on a communication protocol. Firstly, accurately dividing a preset area by acquiring communication environment information of charging piles, and generating a charging pile set corresponding to different dividing areas. And secondly, a protocol conversion module is arranged to expand the charging pile signals in the second division area, so that the monitoring effect is improved. And then, collecting and managing the charging pile monitoring signals to form a charging pile signal database, and effectively managing the charging piles in the preset area. And finally, managing the charging piles in the preset area according to the charging pile signal database, so that the monitoring efficiency and the monitoring effect are improved, and the running efficiency, the safety and the reliability of the charging piles are improved.
Having described the basic principles of the present application, various non-limiting embodiments of the present application will now be described in detail with reference to the accompanying drawings.
Example 1
As shown in fig. 1, an embodiment of the present application provides a charging pile monitoring and managing method based on a communication protocol, where the method includes:
acquiring communication environment information of a charging pile, wherein the communication environment information is based on the communication environment between the charging pile and a control center;
in the embodiment of the application, the communication environment information refers to parameters such as a communication mode, a communication protocol, a communication distance and the like between the charging pile and the control center. By acquiring the information, the communication condition between the charging pile and the control center can be better known, so that effective charging pile monitoring management is performed.
Firstly, a communication mode and a communication protocol between the charging pile and the control center are acquired through a communication module inside the charging pile, the information is stored in a memory of the charging pile, and the information is acquired through reading related data in the memory. Then, a communication test is performed between the charging pile and the control center, and a communication distance between the charging pile and the control center is measured. And then, summarizing the acquired communication mode, communication protocol and communication distance of each charging pile to acquire communication environment information. For example, a communication environment between a certain charging pile and a control center is 3-way CAN communication, and the communication environment is applied to internal communication, VCU communication and external charging pile communication respectively, and the communication distance is 100m. And a foundation is provided for the subsequent monitoring and management of the charging piles by acquiring the communication environment information of each charging pile.
Acquiring position distribution coordinates of charging piles in a preset area from the control center;
in the embodiment of the application, the control center is a controller for centrally managing all charging piles in a preset area, and is used for collecting, processing and analyzing monitoring signals of the charging piles and sending control instructions to the charging piles; the preset area is an area in which the charging pile needs to be managed and monitored; the position distribution coordinates are information representing the position of the charging pile in the geographic space, including longitude, latitude and altitude.
Firstly, ensuring that a communication connection is established between a control center and a charging pile; then, once the charging pile and the control center are in communication connection, a request command is sent to the control center, and the request command is used for acquiring the position information of the charging pile in a preset area; after receiving the request, the control center screens according to the information of the preset area and provides the position distribution coordinates of the charging piles in the preset area, wherein the position distribution coordinates comprise the longitude, latitude and other position information of the charging piles. And after the position distribution coordinates of the charging piles are obtained, recording and storing the position distribution coordinates so as to manage the charging piles correspondingly.
Dividing the preset area based on the communication environment information to obtain a first divided area and a second divided area;
In the embodiment of the application, the first dividing area is a sub-area divided according to the communication environment information, wherein the communication distance between the charging pile and the control center is relatively short; the second divided area is another sub-area divided according to the communication environment information, wherein the communication distance between the charging pile and the control center is relatively long.
First, the communication distance between each charging pile and the control center is extracted from the communication environment information. Then, in a preset area, taking a control center as a center, performing communication test on the charging piles in the same direction, and setting a division threshold according to management efficiency and accuracy of the charging piles, wherein the charging piles with communication distances exceeding the threshold have poor communication effect with the control center. Then, according to the threshold, based on the control center, the preset area is divided into areas, the preset area with the distance from the control center being smaller than or equal to the division threshold is divided into first divided areas, and other areas are second divided areas.
And dividing the preset area into different subareas through communication environment information, and providing basic data for subsequent monitoring and management of the charging pile.
Generating a first charging pile set corresponding to the first divided area and a second charging pile set corresponding to the second divided area, wherein the communication distance between the battery management system of each charging pile in the first divided area and the control center is smaller than that between the battery management system of each charging pile in the second divided area and the control center;
In the embodiment of the application, because the communication environments among the charging piles in the preset area are different, the preset area is required to be divided to obtain the first divided area and the second divided area, so that differentiated management is realized. The communication distance between the battery management system of each charging pile in the first division area and the control center is smaller than that between the battery management system of each charging pile in the second division area and the control center.
In order to facilitate management of charging piles in different partitioned areas, a charging pile set corresponding to each area is generated. Firstly, position coordinates of all charging piles in a preset area are obtained. Then, whether each charging pile is located in the first divided area or the second divided area is judged according to the divided first divided area and second divided area. If the charging pile is positioned in the first dividing area, adding the charging pile to a first charging pile set; if the second division area is located, the charging pile is added to the second charging pile set. And by traversing all the charging piles, a first charging pile set containing all the charging piles of the first divided area and a second charging pile set containing all the charging piles of the second divided area are finally generated, so that different management strategies can be adopted for the charging piles of different divided areas, and a foundation is provided for management of the charging piles of different divided areas.
Setting a protocol conversion module, wherein the protocol conversion module is connected with the charging piles in the second dividing area through an embedded gateway and is used for carrying out signal expansion on signals sent by the charging piles in the second dividing area;
in the embodiment of the application, because the communication distance between the charging pile in the second division area and the control center is far, if the same communication protocol as that of the charging pile in the first division area is directly adopted, the communication effect is poor easily. Therefore, a protocol conversion module is arranged, the charging piles in the second division area are in butt joint through the embedded gateway, and the protocol conversion module is used for carrying out signal expansion on signals sent by the charging piles in the second division area so as to solve the problem caused by overlong communication distance.
And the protocol conversion module establishes connection with the charging pile in the second dividing area through the embedded gateway. When the charging piles in the second dividing area send out monitoring signals, the signals are firstly sent to the protocol conversion module. The signal expansion unit in the protocol conversion module processes the received signal, such as increasing signal power, changing signal frequency, etc., to expand the transmission range of the signal. The expanded signal is then sent to the control center.
Compared with the method that the same communication protocol as the first divided area is directly adopted, the problem that the communication distance between the charging pile and the control center in the second divided area is too long can be effectively solved by arranging the protocol conversion module. Through signal expansion, the monitoring signal can successfully reach the control center, and the charging pile in the second dividing area can be effectively managed.
Collecting the charging pile monitoring signals of the first divided area and the charging pile monitoring signals of the second divided area after signal expansion, and generating a charging pile signal database;
in the embodiment of the application, in order to uniformly manage the charging piles in the preset area, a charging pile signal database is generated. The control center is provided with a monitoring signal receiving device for receiving the charging pile monitoring signals from the first dividing area and the second dividing area. The charging piles in the first dividing area directly send the monitoring signals to the monitoring signal receiving device of the control center. After receiving the monitoring signals sent by the charging piles in the first divided area, the monitoring signal receiving device of the control center stores the monitoring signals in the charging pile signal database, and marks the monitoring signals to show that the charging piles come from the first divided area.
The charging pile in the second division area firstly transmits the monitoring signal to the protocol conversion module, a signal expansion unit in the protocol conversion module expands the received monitoring signal, and the expanded monitoring signal is transmitted to a monitoring signal receiving device of the control center by the protocol conversion module. After receiving the monitoring signals of the charging piles in the second divided area from the protocol conversion module, the monitoring signal receiving device of the control center also stores the monitoring signals in the charging pile signal database, and marks the monitoring signals to show the charging piles from the second divided area.
The charging pile monitoring signals of the first divided area and the second divided area are received, the monitoring signals of all charging piles in the first divided area and the second divided area are stored in a charging pile signal database of the control center, and the monitoring signals of different areas are marked. Thus, the charging pile signal database is generated completely, and a foundation is provided for monitoring and management of the charging piles in the preset area.
And managing the charging piles in the preset area according to the charging pile signal database.
In the embodiment of the application, firstly, a control center extracts charging pile monitoring signals of a first divided area and a second divided area and corresponding labeling information from a charging pile signal database. Secondly, according to the extracted monitoring signals, the control center monitors the working states of all the charging piles in the preset area in real time, for example, whether parameters such as output voltage, current, temperature and the like are in a normal range or not. Once the monitoring parameter of a certain charging pile is detected to be abnormal, the control center timely manages the charging pile, for example, the charging pile is stopped or an alarm prompts a charging pile manager to check and maintain. For the charging piles in the second dividing area, the monitoring signals are expanded and sent to the control center through the protocol conversion module, so that the control center sets a wider abnormal judgment range when managing the charging piles in the second dividing area, and misjudgment of the signals is avoided.
For example, the preset area is based on a Controller Area Network (CAN) method, and the Battery Management System (BMS) collects charging pile data in real time and generates a charging pile signal database. Wherein 10 charging piles are arranged in the preset area, wherein the 1 st to 5 th charging piles are positioned in the first dividing area, and the 6 th to 10 th charging piles are positioned in the second dividing area. The BMS host collects data of the 10 charging piles in real time and generates a charging pile signal database. Then, the monitoring signals of the 5 charging piles in the first division area and the 5 charging piles in the second division area are stored in a charging pile signal database, and the BMS host analyzes the acquired monitoring data and processes fault information. Then, the control center extracts monitoring signals from the charging pile signal database, manages 10 charging piles in a preset area, and directly extracts the monitoring signals of 5 charging piles in a first dividing area from the charging pile signal database, for example, when the BMS host detects that the output voltage of the 3 rd charging pile exceeds a limiting range, the control center immediately sends a stop instruction to avoid danger; for 5 charging piles in the second dividing area, the monitoring signals extracted from the charging pile signal database by the control center are expanded and sent through the protocol conversion module, and when the BMS host judges whether the charging pile is abnormal or not, a wider judging range is set according to factors such as communication delay and the like, for example, when the temperature of the 8 th charging pile is detected to continuously rise and exceed a limiting range for a long time, the BMS host gives an alarm to a charging pile manager.
The charging piles in the preset area can be effectively managed according to the charging pile signal database, the real-time running state of the charging piles is monitored, abnormal judgment and alarm are carried out, maintenance strategies are formulated, and the like, so that a foundation is provided for management of the charging piles in the preset area.
Further, the embodiment of the application further comprises:
after the communication environment information is acquired, carrying out communication stability analysis to obtain a communication stability index;
when the communication stability index meets the preset communication stability requirement, calling a historical signal set based on the preset area from the control center;
and analyzing the history signal set in the preset area, and outputting a communication distance for dividing the first dividing area and the second dividing area, wherein the communication distance is the communication distance between the control center and the charging pile.
In a possible embodiment, in order to divide the preset area more accurately, before dividing the first division area and the second division area, the communication environment and the history signal in the areas are analyzed to obtain the communication distance reference value for division. The communication stability index is an index of communication quality in an evaluation area obtained by analysis of communication environment information. The historical signal set is a monitoring signal of the charging pile in a preset area of the control center historical record.
Firstly, after communication environment information is acquired, selecting and evaluating indexes of communication stability in an area, such as an average signal quality index, scoring communication paths between all charging piles and a control center in the area, and calculating an average score, wherein the higher the score is, the more stable the communication is; the proportion of reliable communication areas is determined, and the proportion of the charging piles which can perform stable and reliable communication in the areas is determined, wherein the higher the proportion is, the better the communication environment is; and the connectivity of the key nodes is evaluated, the communication quality between some key charging piles (such as charging piles with wider coverage areas) in the area and the control center is evaluated, and if the communication quality of the key nodes is high, the whole communication is stable. Then, setting a corresponding threshold value for the selected communication stability index, for example, setting a minimum average score threshold value for the average signal quality index, and if the calculated average score exceeds the threshold value, the communication environment is better; setting a minimum proportion threshold for the proportion of reliable communication areas, and if the calculated proportion exceeds the threshold, the communication environment is good; for the connectivity of the key nodes, setting a minimum communication quality threshold value, and if the communication quality between the key nodes exceeds the threshold value, the communication environment is good. Then, comparing the communication stability index calculated in the communication environment analysis with a corresponding threshold value, and if all indexes meet the threshold value requirement, indicating that the communication environment is better; if any index is not satisfied, the subsequent steps are carried out after the environment is improved.
If the communication stability index meets the preset requirement, indicating that the current communication environment is better, the control center calls a stored historical signal set in a preset area. And then analyzing the historical signal set to judge the distribution condition of the communication distances between different charging piles and the control center. Because of the charging pile with longer communication distance, the signal transmission quality is poor. Therefore, a communication distance value, in which the charging post in front is defined as a first divided area and the charging post in rear is defined as a second divided area, is selected as a reference. The communication distance value will be used as a basis for dividing the first divided area and the second divided area.
By analyzing the communication environment and the history signals, the communication quality of each charging pile and the control center in the area is accurately judged, and a proper communication distance value is selected according to the communication quality to accurately divide the first divided area and the second divided area, so that a foundation is provided for different management strategies for different divided areas to be adopted subsequently.
Further, the embodiment of the application further comprises:
evaluating the signal transmission quality of the historical signal set, and determining an identification signal with the signal transmission quality smaller than the preset signal transmission quality;
Acquiring a communication distance corresponding to the identification signal according to the position distribution coordinates of the charging piles in a preset area;
clustering all communication distances corresponding to the identification signals to determine a first communication distance, and inputting the first communication distance into the control center for dividing the charging piles in the preset area.
In one possible embodiment, to accurately divide the first division area and the second division area, a first communication distance for division is obtained according to a communication distance between each charging pile and the control center in the historical signal set analysis area. First, for each signal in the set of history signals, the transmission quality of the signal transmitted from the charging pile to the control center is evaluated by signal delay, signal power, bit error rate, etc., and if the transmission quality of a certain signal is lower than a preset threshold, it is indicated that the signal will be greatly affected by the communication environment, and the signal is defined as an identification signal.
And then, acquiring the position coordinates of each charging pile in the preset area, and calculating the communication distance between the charging pile and the control center according to the position coordinates of the charging pile corresponding to the identification signal. And then, carrying out cluster analysis on the communication distances corresponding to all the identification signals, and selecting a communication distance value according to the monitoring requirement effect on the preset area, wherein the charging piles in front of the value are defined as a first divided area, and the charging piles in back of the value are defined as a second divided area. If the monitoring requirement on the preset area is higher, a smaller communication distance value is selected, and if the monitoring requirement on the preset area is not higher, a larger communication distance value is selected, and the communication distance value is used as a first communication distance and is input to a control center for dividing the charging piles in the preset area. And evaluating the signal transmission quality between different charging piles and the control center by analyzing the historical signal set, finding out the communication distances corresponding to the identification signals with lower signal transmission quality, clustering the communication distances, and finally determining a first communication distance for dividing the first dividing area and the second dividing area.
Further, the embodiment of the application further comprises:
invoking a historical signal set based on the preset area from the control center, wherein the historical signal set correspondingly acquires a historical transmission signal of each charging pile, and the historical transmission signal of each charging pile comprises a first transmission path and a second transmission path;
the first transmission path is a transmission path when the charging pile sends signals to the control center, and the second transmission path is a transmission path when the control center sends signals to the charging pile.
In one possible embodiment, the control center recalls from the database a stored set of historical signals for each charging stake within the predetermined area. As shown in fig. 2, the historical signal set correspondingly collects complete records of signals sent and received by each charging pile, and each record of the charging piles comprises a first transmission path and a second transmission path. The first transmission path records a path through which the signal flows and related information, such as a relay station, signal transmitting power, environmental interference, and the like, when the charging pile transmits the monitoring signal to the control center. The second transmission path records the path through which the signal flows and related information when the control center sends a control instruction to the charging pile.
The communication quality of the first transmission path and the second transmission path may be different due to the influence of the communication environment, and thus, the actual communication effect between the charging pile and the control center may be determined according to the information of the two paths. For example, if the communication quality of the first transmission path is high and the communication quality of the second transmission path is low, this means that the communication environment of the charging pile is complex, and the signal from the control center to the charging pile is susceptible to interference.
And obtaining the information of the first transmission path and the second transmission path of each charging pile by calling the stored historical signal set, accurately judging the communication environment and effect of each charging pile in the area according to the information such as the communication quality of the two paths, and providing a basis for further accurately dividing the preset area.
Further, the embodiment of the application further comprises:
performing transmission quality evaluation on the historical signal set, wherein evaluation indexes comprise power of a signal sending end, loss in signal transmission and sensitivity of a signal receiving end;
a first signal transmission quality based on the first transmission path and a second signal transmission quality based on the second transmission path are output, respectively.
In a preferred embodiment, to determine the communication quality of the first transmission path and the second transmission path, a transmission quality evaluation is performed on the set of historical signals. Firstly, carrying out transmission quality evaluation on a historical signal set, and selecting evaluation indexes as power of a signal sending end, loss in signal transmission and sensitivity of a signal receiving end. The power of the signal transmitting end is the output power of the signal transmitting equipment and reflects the signal intensity of the transmitting end, the signal transmitting end of the first transmission path is a charging pile, and the signal transmitting end of the second transmission path is a control center; the loss in signal transmission refers to power attenuation or quality degradation occurring on a path from a transmitting end to a receiving end of a signal, and reflects the anti-interference capability of the signal transmission; the sensitivity of the signal receiving end refers to the sensitivity and the recognition degree of the signal receiving equipment to the signal, the signal receiving end of the first transmission path is a control center, and the signal transmitting end of the second transmission path is a charging pile.
And then, according to the evaluation index, evaluating the first transmission path and the second transmission path in the historical transmission signals of each charging pile in all the historical signal sets, and acquiring the signal transmission quality of the first transmission path and the second transmission path of each charging pile to obtain the first signal transmission quality and the first signal transmission quality. The signal sending intensity is judged according to the sending power, and the higher the sending power is, the stronger the signal is; judging the quality reduction degree in the signal transmission process according to the path loss, wherein the smaller the path loss is, the higher the signal quality is; the recognition effect of the signal is judged according to the receiving sensitivity, and the higher the sensitivity is, the better the recognition effect is. Therefore, the signal transmission quality of the first transmission path is judged by the rule: if the transmitting power is high, the path loss is small, the receiving sensitivity is high, and the first signal transmission quality is high; if the transmitting power is moderate, the path loss and the receiving sensitivity are general, and the first signal transmission quality is moderate; if the transmit power is low, the path loss is large, the receive sensitivity is low, and the first signal transmission quality is low. And similarly, integrating three evaluation indexes on the second transmission path to judge the signal transmission quality of the second transmission path, wherein the rule is the same as that of the first transmission path.
By selecting proper evaluation indexes, the signal transmission quality of the first transmission path and the second transmission path is accurately judged, a basis is provided for acquiring accurate communication distance, and support is provided for improving the monitoring management effect of the charging pile.
Further, the embodiment of the application further comprises:
acquiring a cloud memory of the control center, wherein a preset comparison signal is stored in the cloud memory;
and carrying out signal abnormality comparison according to the charging pile signal database and a preset comparison signal, positioning an abnormal charging pile, generating a control instruction, and controlling the abnormal charging pile by the control instruction.
In the embodiment of the application, in order to effectively manage the charging piles in the preset area, monitoring signals of the charging piles are checked, abnormal signals are positioned and processed. The cloud storage is a cloud database of the control center; the preset comparison signals are normal working signals of all charging piles stored in the cloud storage.
Firstly, a control center acquires a cloud memory, and signals acquired by each charging pile during normal operation are stored in the cloud memory and used as preset comparison signals. Then, the control center extracts monitoring signals of the charging piles from the charging pile signal database. And then, comparing the monitoring signal of each charging pile with a corresponding preset comparison signal one by one, and judging the rationality of the monitoring signal. The comparison rule is as follows: the sampling time and sampling interval of the monitoring signal are basically consistent with those of the preset comparison signal, and the operation parameter value is in a normal range, so that the charging pile is indicated to operate normally; the sampling time and sampling interval of the monitoring signal are greatly changed, or the operation parameters exceed the normal range, and the difference between the monitoring signal and the preset comparison signal is large, so that the charging pile is indicated to be abnormal; the second divided region is charged with piles, allowing for a large difference to account for the effects of signal transmission delays.
If the difference between the monitoring signal of a certain charging pile and the preset comparison signal is large, judging that the charging pile is abnormal. At this time, the control center generates a control command, and transmits the control command to the abnormal charging pile through the communication network. After the abnormal charging pile receives the control instruction, taking corresponding measures according to the instruction content, for example, stopping working, and alarming to prompt a charging pile manager to check; restarting the charging pile, re-sending a monitoring signal to a control center for comparison, and judging whether the abnormality is eliminated; if the monitoring signal is still abnormal after a plurality of restarting, the maintenance is checked manually. Meanwhile, the control center continuously compares the signal abnormality of the new monitoring signal sent by the abnormal charging pile, judges whether the abnormal charging pile is normal or not, and if the abnormal charging pile is normal, the control center releases the alarm and continues monitoring. If abnormality still, the alarm is continued until abnormality is removed.
By comparing the monitoring signal of the charging pile with a preset normal working signal, the abnormal signal is accurately judged, so that the abnormal charging pile is timely and effectively managed and controlled.
Further, the embodiment of the application further comprises:
the protocol conversion module comprises a protocol converter;
Connecting the protocol conversion module with signal receiving equipment of the control center, and when the signal receiving equipment receives a monitoring signal sent by a charging pile in the second dividing area;
and processing the monitoring signal by the signal expansion unit in the protocol converter through the embedded gateway.
In a preferred embodiment, in the present invention, the communication distance between the charging pile in the second division area and the control center is longer, and in order to ensure that the control center can receive the signal sent by the charging pile in the second division area, a protocol conversion module is set to expand the transmission range of the signal. The protocol conversion module is used for expanding the charging pile signals in the second divided area and comprises a protocol converter. The protocol converter is a main component of the protocol conversion module, and is used for receiving and forwarding signals, and comprises a signal expansion unit. The signal expansion unit is a signal amplifying and expanding device inside the protocol converter. The embedded gateway is gateway equipment with a protocol conversion module connected with the control center.
Firstly, a protocol converter in the protocol conversion module is connected with signal receiving equipment of a control center through an embedded gateway, so that the protocol converter can receive monitoring signals from the charging piles in the second divided area and forward the monitoring signals to the signal receiving equipment. When the signal receiving equipment of the control center is to receive the signal sent by the charging pile in the second divided area, the signal receiving equipment is firstly in butt joint with the signal expansion unit in the protocol converter through the embedded network management. Then, the protocol converter receives the monitoring signal from the charging pile in the second divided area and sends the signal to the internal signal expansion unit. The signal expansion unit processes the monitoring signal, such as increasing signal power, changing signal frequency, etc., so that the transmission range of the monitoring signal is expanded to a range that can cover the control center. The protocol converter then transmits the expanded supervisory signal to the signal receiving apparatus.
The protocol conversion module is arranged and connected with the control center by using the embedded gateway, so that the receiving and the expansion of the monitoring signals of the charging piles in the second divided area are realized, the signal transmission quality is improved, the expanded monitoring signals can successfully reach the control center, and the management of the charging piles in the second divided area is ensured.
Further, the embodiment of the application further comprises:
and after any charging pile completes the charging of the vehicle, sending a charging pile monitoring signal to the control center.
In one possible embodiment, in order to monitor the entire working process of the charging pile and to determine whether an abnormality occurs, the charging pile sends a monitoring signal at the end of charging to the control center after completing the charging of the vehicle.
Firstly, the vehicle is connected to a charging pile to start charging, the charging pile continuously monitors the charging process of the vehicle, and the collected monitoring information, such as output voltage and output current, is sent to a control center on line. When the vehicle charging is finished and the connection with the charging pile is disconnected, the output voltage and the output current of the charging pile drop sharply to 0 at this time. The charging stake detects a drop in the output parameter, indicating that the vehicle has completed charging and is disconnected. And after receiving the disconnection signal, the charging pile immediately collects the monitoring information at the moment, including output voltage, output current, internal temperature and the like, and generates a monitoring signal when charging is finished. And then, the charging pile sends the collected monitoring signal to the control center when the charging is finished, and the control center reads the content of the signal after receiving the signal and judges whether the charging is normally finished according to the signal. If the data such as the output voltage, the output current and the like in the monitoring signal are abnormal at the end of charging, the charging process may have faults. And the control center generates a control instruction for the charging pile to check or maintain. And if the monitoring signal is normal, indicating that the charging pile works normally.
The monitoring signal is immediately acquired after the charging pile detects that the vehicle is charged, and is sent to the control center, and the control center judges whether the charging process is normal or not by analyzing the monitoring signal when the charging control is finished, so that a basis is provided for management of the charging pile.
In summary, the charging pile monitoring and managing method based on the communication protocol provided by the embodiment of the application has the following technical effects:
acquiring communication environment information of the charging pile, wherein the communication environment information is based on the communication environment between the charging pile and a control center, and provides a foundation for effective management of the charging pile subsequently; acquiring position distribution coordinates of the charging piles in a preset area from a control center, and providing a basis for carrying out space distribution analysis and monitoring on the charging piles; dividing a preset area based on communication environment information to obtain a first divided area and a second divided area, and providing support for realizing differentiated management of charging piles in different areas; generating a first charging pile set corresponding to the first divided area and a second charging pile set corresponding to the second divided area, wherein the communication distance between the battery management system of each charging pile in the first divided area and the control center is smaller than that between the battery management system of each charging pile in the second divided area and the control center; the protocol conversion module is arranged and used for docking the charging piles in the second division area through the embedded gateway and carrying out signal expansion on signals sent by the charging piles in the second division area so as to more accurately collect monitoring signals of the remote charging piles; collecting charging pile monitoring signals of the first divided area and the charging pile monitoring signals of the second divided area after signal expansion, and generating a charging pile signal database so as to perform centralized management and analysis on the charging piles; and managing the charging piles in the preset area according to the charging pile signal database, so that accurate and fine management and monitoring of the charging piles are realized, and the service efficiency, safety and management effect of the charging piles are improved.
Example two
Based on the same inventive concept as the charging pile monitoring and management method based on the communication protocol in the foregoing embodiment, as shown in fig. 3, an embodiment of the present application provides a charging pile monitoring and management system based on the communication protocol, where the system includes:
a communication environment obtaining module 11, configured to obtain communication environment information of the charging pile, where the communication environment information is based on a communication environment between the charging pile and the control center;
a position distribution coordinate module 12, configured to obtain position distribution coordinates of the charging piles located in a preset area from the control center;
a preset area dividing module 13, configured to divide the preset area based on the communication environment information, to obtain a first divided area and a second divided area;
a charging pile set generating module 14, configured to generate a first charging pile set corresponding to the first divided area and a second charging pile set corresponding to the second divided area, where a communication distance between a battery management system of each charging pile in the first divided area and the control center is smaller than a communication distance between a battery management system of each charging pile in the second divided area and the control center;
The charging pile docking module 15 is configured to set a protocol conversion module, where the protocol conversion module docks charging piles located in the second division area through an embedded gateway, and is configured to perform signal expansion on signals sent by the charging piles in the second division area;
the signal database generating module 16 is configured to collect the charging pile monitoring signal of the first divided area and the charging pile monitoring signal of the second divided area after signal expansion, and generate a charging pile signal database;
and the charging pile management module 17 is used for managing the charging piles in the preset area according to the charging pile signal database.
Further, the charging pile set generating module 14 includes the following steps:
after the communication environment information is acquired, carrying out communication stability analysis to obtain a communication stability index;
when the communication stability index meets the preset communication stability requirement, calling a historical signal set based on the preset area from the control center;
and analyzing the history signal set in the preset area, and outputting a communication distance for dividing the first dividing area and the second dividing area, wherein the communication distance is the communication distance between the control center and the charging pile.
Further, the charging pile set generating module 14 further includes the following steps:
evaluating the signal transmission quality of the historical signal set, and determining an identification signal with the signal transmission quality smaller than the preset signal transmission quality;
acquiring a communication distance corresponding to the identification signal according to the position distribution coordinates of the charging piles in a preset area;
clustering all communication distances corresponding to the identification signals to determine a first communication distance, and inputting the first communication distance into the control center for dividing the charging piles in the preset area.
Further, the charging pile set generating module 14 further includes the following steps:
invoking a historical signal set based on the preset area from the control center, wherein the historical signal set correspondingly acquires a historical transmission signal of each charging pile, and the historical transmission signal of each charging pile comprises a first transmission path and a second transmission path;
the first transmission path is a transmission path when the charging pile sends signals to the control center, and the second transmission path is a transmission path when the control center sends signals to the charging pile.
Further, the charging pile set generating module 14 further includes the following steps:
performing transmission quality evaluation on the historical signal set, wherein evaluation indexes comprise power of a signal sending end, loss in signal transmission and sensitivity of a signal receiving end;
a first signal transmission quality based on the first transmission path and a second signal transmission quality based on the second transmission path are output, respectively.
Further, the charging pile management module 17 includes the following steps:
acquiring a cloud memory of the control center, wherein a preset comparison signal is stored in the cloud memory;
and carrying out signal abnormality comparison according to the charging pile signal database and a preset comparison signal, positioning an abnormal charging pile, generating a control instruction, and controlling the abnormal charging pile by the control instruction.
Further, the charging pile docking module 15 includes the following steps:
connecting the protocol conversion module with signal receiving equipment of the control center, and when the signal receiving equipment receives a monitoring signal sent by a charging pile in the second dividing area;
and processing the monitoring signal by the signal expansion unit in the protocol converter through the embedded gateway.
Further, the embodiment of the application also comprises a monitoring signal sending module, which comprises the following execution steps:
and after any charging pile completes the charging of the vehicle, sending a charging pile monitoring signal to the control center.
Any of the steps of the methods described above may be stored as computer instructions or programs in a non-limiting computer memory and may be called by a non-limiting computer processor to identify any method for implementing an embodiment of the present application, without unnecessary limitations.
Further, the first or second element may not only represent a sequential relationship, but may also represent a particular concept, and/or may be selected individually or in whole among a plurality of elements. It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the scope of the application. Thus, the present application is intended to include such modifications and alterations insofar as they come within the scope of the application or the equivalents thereof.
Claims (8)
1. A method for monitoring and managing a charging pile based on a communication protocol, the method comprising:
acquiring communication environment information of a charging pile, wherein the communication environment information is based on the communication environment between the charging pile and a control center;
Acquiring position distribution coordinates of charging piles in a preset area from the control center;
dividing the preset area based on the communication environment information to obtain a first divided area and a second divided area;
after the communication environment information is acquired, carrying out communication stability analysis to obtain a communication stability index;
when the communication stability index meets the preset communication stability requirement, calling a historical signal set based on the preset area from the control center;
analyzing the history signal set in the preset area, and outputting a communication distance for dividing the first dividing area and the second dividing area, wherein the communication distance is the communication distance between the control center and the charging pile;
generating a first charging pile set corresponding to the first divided area and a second charging pile set corresponding to the second divided area, wherein the communication distance between the battery management system of each charging pile in the first divided area and the control center is smaller than that between the battery management system of each charging pile in the second divided area and the control center;
setting a protocol conversion module, wherein the protocol conversion module is connected with the charging piles in the second dividing area through an embedded gateway and is used for carrying out signal expansion on signals sent by the charging piles in the second dividing area;
Collecting the charging pile monitoring signals of the first divided area and the charging pile monitoring signals of the second divided area after signal expansion, and generating a charging pile signal database;
and managing the charging piles in the preset area according to the charging pile signal database.
2. The method of claim 1, wherein the historical signal set within the preset area is analyzed to output a communication distance for dividing the first divided area and the second divided area, the method comprising:
evaluating the signal transmission quality of the historical signal set, and determining an identification signal with the signal transmission quality smaller than the preset signal transmission quality;
acquiring a communication distance corresponding to the identification signal according to the position distribution coordinates of the charging piles in a preset area;
clustering all communication distances corresponding to the identification signals to determine a first communication distance, and inputting the first communication distance into the control center for dividing the charging piles in the preset area.
3. The method of claim 2, wherein invoking from the control center a set of historical signals based on the predetermined area, the set of historical signals corresponding to the collection of historical transmission signals for each charging post, the historical transmission signals for each charging post comprising a first transmission path and a second transmission path;
The first transmission path is a transmission path when the charging pile sends signals to the control center, and the second transmission path is a transmission path when the control center sends signals to the charging pile.
4. A method according to claim 3, wherein the signal transmission quality of the set of historical signals is evaluated, the method comprising:
performing transmission quality evaluation on the historical signal set, wherein evaluation indexes comprise power of a signal sending end, loss in signal transmission and sensitivity of a signal receiving end;
a first signal transmission quality based on the first transmission path and a second signal transmission quality based on the second transmission path are output, respectively.
5. The method of claim 1, wherein the charging piles within the predetermined area are managed according to the charging pile signal database, the method further comprising:
acquiring a cloud memory of the control center, wherein a preset comparison signal is stored in the cloud memory;
and carrying out signal abnormality comparison according to the charging pile signal database and a preset comparison signal, positioning an abnormal charging pile, generating a control instruction, and controlling the abnormal charging pile by the control instruction.
6. The method of claim 1, wherein the protocol conversion module comprises a protocol converter, the method further comprising:
connecting the protocol conversion module with signal receiving equipment of the control center, and when the signal receiving equipment receives a monitoring signal sent by a charging pile in the second dividing area;
and processing the monitoring signal by the signal expansion unit in the protocol converter through the embedded gateway.
7. The method of claim 6, wherein after any one of the charging piles completes the charging of the vehicle, a charging pile monitoring signal at that time is transmitted to the control center.
8. A communication protocol based charging pile monitoring and management system, characterized in that it is used for implementing a communication protocol based charging pile monitoring and management method according to any one of claims 1-7, said system comprising:
the communication environment acquisition module is used for acquiring communication environment information of the charging pile, wherein the communication environment information is based on a communication environment between the charging pile and the control center;
the position distribution coordinate module is used for acquiring position distribution coordinates of the charging piles in a preset area from the control center;
The preset area dividing module is used for dividing the preset area based on the communication environment information to obtain a first divided area and a second divided area;
the charging pile set generation module is used for generating a first charging pile set corresponding to the first divided area and a second charging pile set corresponding to the second divided area, wherein the communication distance between the battery management system of each charging pile in the first divided area and the control center is smaller than that between the battery management system of each charging pile in the second divided area and the control center;
the charging pile butt joint module is used for setting a protocol conversion module, and the protocol conversion module is used for butt joint the charging piles in the second dividing area through the embedded gateway and for carrying out signal expansion on signals sent by the charging piles in the second dividing area;
the signal database generation module is used for collecting the charging pile monitoring signals of the first divided areas and the charging pile monitoring signals of the second divided areas after signal expansion to generate a charging pile signal database;
And the charging pile management module is used for managing the charging piles in the preset area according to the charging pile signal database.
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