CN111016692A - Electric vehicle wireless charging system based on LoRa network and control method thereof - Google Patents
Electric vehicle wireless charging system based on LoRa network and control method thereof Download PDFInfo
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- CN111016692A CN111016692A CN201911172284.1A CN201911172284A CN111016692A CN 111016692 A CN111016692 A CN 111016692A CN 201911172284 A CN201911172284 A CN 201911172284A CN 111016692 A CN111016692 A CN 111016692A
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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
- B60L53/10—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 characterised by the energy transfer between the charging station and the vehicle
- B60L53/12—Inductive energy transfer
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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
- B60L53/35—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles
- B60L53/38—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles specially adapted for charging by inductive energy transfer
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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
- B60L53/66—Data transfer between charging stations and vehicles
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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
- Y02T90/14—Plug-in electric vehicles
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses an electric vehicle wireless charging system based on an LoRa network and a control method thereof in the technical field of electric vehicle charging, the system comprises an electric vehicle, a charging device, a server and a LoRa base station, the electric vehicle, the charging device and the server are all connected on the LoRa network established by the LoRa base station, the electric vehicle and the charging device are all controlled by the server through the LoRa network, the charging does not need to be supervised at any time, the electric vehicle can automatically work and charge under the control of the server, and the charging position is calibrated for many times, so that the charging position is accurate, the condition that the false alarm happens frequently because the charging position is inaccurate in the existing charging equipment is well improved, the alarm is generally true to have faults, the charging range is wider through wireless charging, and the system can directly receive the alarm sent by the server through a terminal, reminding workers to overhaul.
Description
Technical Field
The invention relates to the technical field of electric vehicle charging, in particular to an electric vehicle wireless charging system based on an LoRa network and a control method thereof,
background
At present, all the unmanned transport vehicles for logistics are electric vehicles which need to be charged, and the AGV has a wide application range at present, and aims to save manpower and improve transport efficiency, but the charging procedure is difficult to control;
at present, the charging modes of the automatic guided vehicle are also three, and some modes are the differentiation of manual charging, battery charging and automatic charging;
manual charging: when the power of the unmanned transport vehicle is insufficient, the ground control center is oriented to a designated charging area or platform, the electrical connection between the unmanned transport vehicle and the charger is manually completed by a full-time worker, then charging is carried out, and after the charging is completed, the connection can be disconnected from a connecting circuit to recover the working state;
when the battery is charged, when the electric quantity of the unmanned transport vehicle is insufficient, the battery is manually replaced by a full-time person, the unmanned transport vehicle can be put into use, and the replaced battery pack is used after charging, so that the method is characterized by being simple and rapid, and the unmanned transport vehicle capable of continuously working for 24 hours can be realized, but the battery pack needs to be doubled, the cost is high, the method is novel, the method is often used for the conditions of high timeliness and lack of vehicle response work, the two methods both need at least one worker to supervise the unmanned transport vehicle in a working place for a long time, the automation degree is low, and once the battery pack is lost, the unmanned transport vehicle cannot work;
the automatic charging is that when the unmanned transport vehicle needs to be supplemented with energy, the automatic charging can be automatically reported and requested, the automatic charging is commanded by a ground control center to go to a designated charging area or platform, a vehicle charging connector is automatically connected to a ground charging system and is charged, after the charging is completed, the unmanned transport vehicle is automatically separated from the charging system and runs to a working area or a standby area, and the automatic charging unmanned transport vehicle is suitable for long-time work and can achieve higher efficiency through automation by using fewer vehicles.
However, the charging position of the existing automatic charging mode is difficult to calibrate, and the system is difficult to match with a proper unmanned carrier and a charging device, so that the system can not operate perfectly and reasonably, and the unmanned carrier is difficult to align with a charging port completely and accurately during charging, so that charging errors are caused, the charging can not be successful, maintenance personnel are often required to correct the charging equipment and the unmanned carrier, the automatic charging efficiency is greatly reduced, the automatic charging also needs to be maintained by people all the time, the charging accuracy is higher at present, the charging position can be confirmed repeatedly, the situation that the charging is abnormal due to inaccurate walking position and the alarm is avoided, the situation that the charging is repeated due to the inaccurate re-enclosure and inaccurate maintenance is avoided, the monitoring times of the personnel are reduced, and the charging system is arranged according to the charging sequence.
Based on the above, the invention designs an electric vehicle wireless charging system based on an LoRa network and a control method thereof, so as to solve the above problems.
Disclosure of Invention
The invention aims to provide an electric vehicle wireless charging system based on a LoRa network and a control method thereof, which can be more automatic, does not need to be supervised by personnel at all times during charging, has an automatic charging system with certain error correction capability, effectively avoids the condition that an unmanned carrying vehicle cannot run in the absence of power, can charge in the absence of power, can repeatedly confirm the charging position, and avoids the occurrence of false alarm condition caused by inaccurate warranty due to the position deviation.
The invention is realized by the following steps: the utility model provides a wireless charging system of electric motor car based on loRa network, includes electric motor car, charging device, server and loRa basic station, through a loRa network is established to the loRa basic station, electric motor car, charging device and server are all connected on the loRa network that the loRa basic station was established, electric motor car and charging device all control by the server through the loRa network, the last wireless transmitting terminal that charges that has set up of charging device, the wireless receiving terminal that charges has been set up on the electric motor car, the wireless receiving terminal that charges and the wireless transmitting terminal that charges charge through wireless technique and charge.
Further, the bottom of electric motor car has still set up the wireless receiving terminal that charges, on-vehicle camera, vehicle mounted power and on-vehicle loRa module have still been installed to the electric motor car, vehicle mounted power is connected with the wireless receiving terminal electricity that charges, on-vehicle camera and on-vehicle loRa module all are connected with vehicle mounted power electricity, on-vehicle loRa module passes through loRa basic station and server data connection.
Further, the vehicle-mounted camera is an infrared camera, the vehicle-mounted power supply is a super capacitor, and the electric vehicle is an unmanned transport vehicle.
Further, the electric vehicle and the charging device are both provided in plurality.
Further, still include work area and waiting area, work area, waiting area and all charging device set up in the scope that the loRa base station covered, the allowable moving range of electric motor car is injectd in the scope that covers of loRa base station.
Further, each of the charging devices includes
The charging range marked line is a ring-shaped coil provided with an opening, the shape of the charging range marked line is the same as that of the vertical projection of the electric vehicle, and the surrounding range of the charging range marked line is larger than the vertical projection area of the electric vehicle;
the wireless charging sending terminal is arranged in the charging range marking, the whole conveying range of the wireless charging sending terminal covers the charging range marking, and the wireless charging sending terminal is embedded on the ground;
one end of the charging guide marking is connected with the waiting area, and the other end of the charging guide marking is connected with the opening of the charging range marking;
the charging confirmation camera is arranged on one side of the charging range marking, and the charging confirmation camera is over against the wireless charging sending end.
The storage method needs to provide the electric vehicle wireless charging system based on the LoRa network, and the control method comprises the following steps:
step 5, the server indicates the electric vehicle to enter a waiting area for queuing and waiting, and returns to the step 3;
step 6, matching the numbers of the idle charging devices with the electric vehicle which is sending a low electric signal, sending the position data of the charging devices to the electric vehicle, simultaneously indicating the electric vehicle to drive into the matched charging devices according to the indication lines of the charging guide marking lines, and marking the matched charging devices as busy;
step 7, after the vehicle-mounted camera of the electric vehicle shoots that the electric vehicle is positioned in the charging range marking line of the matched charging device, the electric vehicle sends a positioning signal to a server;
step 8, after receiving the confirmation signal, the server starts a matched charging device, and a charging confirmation camera on the charging device starts to operate and searches whether the electric vehicle is in a charging position;
step 9, the charging device sends a signal for confirming the in-place to the server, the server indicates the charging device to start the wireless charging sending terminal and start to charge the electric vehicle, if the charging is successful, the step 12 is carried out, and if the charging is unsuccessful, the step 10 is carried out;
step 10, marking the electric vehicle and the matched charging device which are not charged successfully for each time as a monitoring device for 1 time, returning to step 6, and entering step 11 if the same electric vehicle or the same charging device is marked for 2 times within a certain time t;
and 12, keeping the electric vehicle in a stationary and continuous charging state, keeping the wireless charging transmitting end of the charging device on, starting the wireless charging receiving end of the electric vehicle to receive the charging of the wireless charging transmitting end, storing the received electric energy to the vehicle-mounted power supply by the wireless charging receiving end, sending a charging completion signal to the server after the vehicle-mounted power supply of the electric vehicle is fully charged, and indicating the electric vehicle which is charged to return to a working area by the server after receiving the charging completion signal.
And step 13, after the electric vehicle enters a working area according to the indication of the server, the server indicates that the wireless charging sending end of the matched charging device is closed, and meanwhile, the server marks the charging device closed by the wireless charging sending end as idle and normal.
Further, the normal charging device is all charging devices except the marked fault device.
Further, the vehicle-mounted camera of the electric vehicle detects a charging guide marking of the matched charging device, the electric vehicle feeds back a signal for capturing the charging guide marking to the server, the server indicates the electric vehicle to move along the charging guide marking to the direction matched with the charging device and indicates the electric vehicle to enter the charging range marking, and the server indicates the electric vehicle to stay in the charging range marking.
Further, when the electric vehicle has a power level as low as 10% or less of the total power level and is in an idle state, the electric vehicle sends a low electric signal to a server, and the time t is 5 minutes.
The invention has the beneficial effects that:
1. according to the invention, the server, the electric vehicle and the charging device are connected through the LoRa network established by the LoRa base station, so that the characteristics of low power consumption, long transmission distance, good encryption property and the like of the LoRa network are utilized, the occupation ratio of electric energy used for communication with the server on the electric vehicle is reduced, more electric energy can be used for carrying work by the electric vehicle, and the LoRa network can cover a larger range, so that the electric vehicle can have a larger working range;
2. the electric vehicle and the charging device are charged by a wireless charging technology, so that the operation of socket butt joint is avoided, the situation of charging failure caused by inaccurate butt joint can not occur any more, the charging range of the charging device covers a certain range by wireless charging, the electric vehicle can be charged as long as the electric vehicle enters the charging range, and the charging error rate is greatly reduced;
3. the calibration condition of the device is that the calibration position of the electric vehicle needs to be repeatedly confirmed and calibrated by the electric vehicle and the charging device, the condition that the driving position of the electric vehicle is inaccurate is effectively reduced, the charging guide marking line is added, and the situation that the electric vehicle starts to be charged without being in place is avoided, so that the fault of error reporting caused by unsuccessful charging is avoided, and even if the charging is unsuccessful once, the system can correct the electric vehicle again to perform position matching, so that the error rate of in-place charging is greatly reduced, and the charging accuracy is improved;
4. the system does not need personnel to operate during charging, judges the electric quantity state by oneself, charges, improves the charging efficiency, and the server can control the electric vehicle to work again after charging is finished, so that the electric vehicle does not have unnecessary idle stop, the working time of the electric vehicle can be fully used, and the idle time of the electric vehicle can be reduced by the charging system.
Drawings
The invention will be further described with reference to examples of embodiments with reference to the accompanying drawings,
fig. 1 is a schematic layout diagram of the entire charging system;
FIG. 2 is a schematic structural diagram of a charging device according to the present invention;
FIG. 3 is a schematic view of the internal structure of the electric vehicle according to the present invention;
FIG. 4 is a schematic diagram of a LoRa network connection relationship according to the present invention;
FIG. 5 is a flow chart of the charging system according to the present invention,
in the drawings, the components represented by the respective reference numerals are listed below:
1-LoRa base station, 11-work area, 12-waiting area, 2-electric vehicle, 21-wireless charging receiving end, 22-vehicle-mounted camera, 23-vehicle-mounted power supply, 24-vehicle-mounted LoRa module, 3-server, 4-charging device, 41-charging guide marked line, 42-wireless charging transmitting end, 43-charging confirmation camera and 44-charging range marked line.
Detailed Description
Referring to fig. 1 to 5, the present invention provides a technical solution: an electric vehicle wireless charging system based on a LoRa network comprises an electric vehicle 2, a charging device 4, a server 3 and a LoRa base station 1, wherein a LoRa network is established through the LoRa base station 1, the electric vehicle 2, the charging device 4 and the server 3 are all connected on the LoRa network established by the LoRa base station 1, the electric vehicle 2 and the charging device 4 are controlled by the server 3 through the LoRa network, a wireless charging sending end 42 is arranged on the charging device 4, a wireless charging receiving end 21 is arranged on the electric vehicle 2, the wireless charging receiving end 21 and the wireless charging sending end 42 are charged through a wireless charging technology, the arrangement enables the system to be wider in connection range, the electric vehicle 2 is lower in communication energy consumption, more electric energy is used for carrying work, wireless charging can be carried out, and the trouble of repeated charging interfaces is avoided, moreover, the interface needing accurate butt joint charging is easy to deviate, so that faults can be frequently reported by mistake, and the system avoids the situation that the sockets are difficult to match;
wherein, the bottom of the electric vehicle 2 is further provided with a wireless charging receiving end 21, the electric vehicle 2 is further provided with a vehicle-mounted camera 22, a vehicle-mounted power supply 23 and a vehicle-mounted loRa module 24, the vehicle-mounted power supply 23 is electrically connected with the wireless charging receiving end 21, the vehicle-mounted camera 22 and the vehicle-mounted loRa module 24 are both electrically connected with the vehicle-mounted power supply 23, the vehicle-mounted loRa module 24 is in data connection with the server 3 through the loRa base station 1, wireless charging is convenient, electric energy is stored, the vehicle-mounted camera 22 is an infrared camera, the vehicle-mounted power supply 23 is a super capacitor, the electric vehicle 2 is an unmanned transport vehicle, charging is faster, the stored electric energy is more, the vehicle-mounted camera 22 serving as the infrared camera enables the electric vehicle 2 to be more accurately calibrated, the electric vehicle 2 can accurately advance along the charging guide marking 41, and the, the system can be increased or decreased according to actual workload, and further comprises a working area 11 and a waiting area 12, wherein the working area 11, the waiting area 12 and all the charging devices 4 are arranged in the coverage range of the LoRa base station 1, the allowable moving range of the electric vehicle 2 is limited in the coverage range of the LoRa base station 1, so that all the devices can be covered in a LoRa network to effectively communicate, the charging device 4 comprises a charging range marking 44, the charging range marking 44 is a ring of annular coil provided with an opening, the shape of the charging range marking 44 is the same as that of the vertical projection of the electric vehicle 2, and the surrounding range of the charging range marking 44 is larger than that of the vertical projection of the electric vehicle 2; the wireless charging system comprises a wireless charging transmitting terminal 42, wherein the wireless charging transmitting terminal 42 is arranged in a charging range marked line 44, the whole conveying range of the wireless charging transmitting terminal 42 covers the charging range marked line 44, and the wireless charging transmitting terminal 42 is embedded on the ground; a charging guide marking 41, one end of the charging guide marking 41 is connected with the waiting area 12, and the other end of the charging guide marking 41 is connected with an opening of a charging range marking 44; the charging confirmation camera 43 is arranged on one side of the charging range marking 44, the charging confirmation camera 43 is over against the wireless charging sending end 42, so that the running of the electric vehicle 2 is not influenced, and the vehicle-mounted power supply 23 of the electric vehicle 2 can be charged wirelessly more conveniently, because the coverage range of the wireless charging sending end 42 is wider, the electric vehicle can be effectively charged as long as the electric vehicle is positioned in the charging range marking 44, a point-to-point interface is not needed for charging, the charging accuracy is higher, and the situation that the charging position is not matched is not easy to occur;
a control method of an electric vehicle wireless charging system based on an LoRa network is completed by the electric vehicle wireless charging system based on the LoRa network, and comprises the following steps:
step 5, the server 3 instructs the electric vehicle 2 to enter the waiting area 12 for queuing and waiting, and returns to the step 3;
step 6, matching the number of the idle charging device 4 with the electric vehicle 2 which is sending a low electric signal, sending the position data of the charging device 4 to the electric vehicle 2, simultaneously indicating the electric vehicle 2 to drive into the matched charging device 4 according to the indication line of the charging guide marking line 41, and marking the matched charging device 4 as busy;
step 7, after the vehicle-mounted camera 22 of the electric vehicle 2 shoots that the electric vehicle 22 is located in the charging range marking 44 of the matched charging device 4, the electric vehicle 2 sends a positioning signal to the server 3;
step 8, after receiving the confirmation signal, the server 3 starts the matched charging device 4, and the charging confirmation camera 43 on the charging device 4 starts to operate and searches whether the electric vehicle 2 is already at the charging position;
step 9, the charging device 4 sends a signal for confirming the in-position to the server 3, the server 3 instructs the charging device 4 to start the wireless charging sending terminal 42 and start charging the electric vehicle 2, if the charging is successful, the step 12 is carried out, and if the charging is unsuccessful, the step 10 is carried out;
step 10, marking the electric vehicle 2 which is not successfully charged and the matched charging device 4 as a monitoring device for 1 time each time, returning to step 6, and entering step 11 if the same electric vehicle 2 or the same charging device 4 is marked for 2 times within a certain time t;
Step 13, after the electric vehicle 2 enters the working area 11 according to the indication of the server 3, the server 3 indicates that the wireless charging transmitting terminal 42 of the matched charging device 4 is closed, and simultaneously the server 3 marks the charging device 4 with the closed wireless charging transmitting terminal 42 as idle and normal, so that the electric vehicle 2 can be charged accurately and effectively, and the electric vehicle 2 can automatically work and charge under the control of the server 3 without the need of personnel on duty, and has the steps of calibrating the charging position for many times, thereby ensuring the accuracy of the charging position, well improving the situation that the false alarm occurs frequently because the charging position is inaccurate in the existing charging equipment, so that the equipment generally has real faults as long as the alarm is given, and the charging range is wider and the charging is simpler, and the system can directly receive the alarm sent by the server 3 through the terminal, reminding workers to overhaul;
the normal charging device 4 is all the charging devices 4 except the fault equipment, false alarm is eliminated as much as possible, other marking equipment is prevented from being used as fault equipment, the vehicle-mounted camera 22 of the electric vehicle 2 detects the charging guide marking line 41 of the matched charging device 4, the electric vehicle 2 feeds back a signal capturing the charging guide marking line 41 to the server 3, the server 3 indicates the electric vehicle 2 to move along the charging guide marking line 41 to the direction matched with the charging device 4 and indicates the electric vehicle 2 to drive into the charging range marking line 44, the server 3 indicates the electric vehicle 2 to stay in the charging range marking line 44, so that the electric vehicle 2 is more effectively guided to enter a charging position, the electric vehicle 2 is ensured to be in the charging range marking line 44, when the electric quantity of the electric vehicle 2 is as low as 10% or below of the total electric quantity, and the electric vehicle 2 is in an idle, the electric vehicle 2 sends a low electric signal to the server 3, so that the electric vehicle 2 has enough electric quantity to queue for charging or directly charge, the situation of complete power-off without electricity is avoided, the time t is 5 minutes, the misinformation is avoided again, the situation that the electric vehicle 2 is inaccurate in position walking is eliminated, if the position walking is inaccurate and the charging is successful again, the system automatically clears the fault alarm, and the personnel can not be informed to overhaul.
One specific application of the embodiment is as follows: the system device of the invention is constructed according to the working range of the electric vehicle 2, then a proper number of LoRa base stations 1 are laid, so as to construct a LoRa network with proper size, generally speaking, one LoRa base station 1 with the range of 500 square meters can be constructed, the number of the LoRa base stations 1 is properly increased according to the actual size, thus the electric vehicle 2 for carrying is positioned in the LoRa network at any time, the charging device 4 is adjusted according to the number of the electric vehicle, generally, about 5-10 electric vehicles 2 need one charging device 4, the charging device 4 needs to be built in the coverage area of the LoRa network, the working area 11 needs to be connected and close to the waiting area 12, the charging device 4 is separated from the working area 11 through the waiting area 12, so that the electric vehicle 2 can conveniently enter the charging device 4 to be queued, the LoRa base stations 1 can be constructed at the central position of the working area 11, therefore, the coverage is wider, in some workplaces, for more convenient carrying and working of the electric vehicle 2, the LoRa base station is sometimes built around the working area 11 to avoid interference with the working of the electric vehicle 2, then all the electric vehicles 2, all the charging devices 4 and the server 3 are connected through the LoRa network built by the LoRa base station 1, and all the electric vehicles 2 and all the charging devices 4 are controlled by the server 3, the server 3 is operated through a terminal, the terminal can be a mobile phone or a computer, the server 3 is an ariloc server used in the embodiment, because the server 3 and the terminal which are operated are devices well known by those skilled in the art, the detailed description of the application is omitted;
when the system is used, all the electric vehicles 2 are placed in the coverage range of the LoRa network,
step 5, the server 3 indicates the electric vehicle 2 to enter the waiting area 12 to be queued, the electric vehicle 2 can enter the waiting area 12 to be queued according to the instruction of the server 3, and because the electric vehicle 2 is in an idle and power-lack state, the electric vehicle 2 can continuously send a low electric signal to the server and return to the step 3;
step 6, matching the number of the nearest idle charging device 4 with the electric vehicle 2 which is sending a low electric signal, sending the position data of the charging device 4 to the electric vehicle 2, wherein the charging guide marking line 41 is connected with the waiting area 12 and different charging range marking lines 44, and when the server 3 indicates the electric vehicle 2 to enter the matched charging device 4 according to the line indicated by the charging guide marking line 41, marking the matched charging device 4 as busy, and no longer matching the busy charging device 4 of another electric vehicle 2;
step 7, after the vehicle-mounted camera 22 of the electric vehicle 2 shoots that the electric vehicle 22 is located in the charging range marking 44 of the matched charging device 4, the electric vehicle 2 sends a positioning signal to the server 3;
step 8, after receiving the confirmation signal, the server 3 starts the charging device 4 with the matching number, and the charging confirmation camera 43 on the charging device 4 starts to operate and searches whether the electric vehicle 2 is already at the charging position;
step 9, the charging device 4 sends a signal for confirming the in-position to the server 3, the server 3 instructs the charging device 4 to start the wireless charging sending terminal 42 and start charging the electric vehicle 2, if the charging is successful, the step 12 is carried out, and if the charging is unsuccessful, the step 10 is carried out;
step 10, marking the electric vehicle 2 which is not successfully charged and the matched charging device 4 as a monitoring device for 1 time each time, returning to step 6, and entering step 11 if the same electric vehicle 2 or the same charging device 4 is marked for 2 times within a certain time t;
Step 13, after the electric vehicle 2 enters the working area 11 according to the instruction of the server 3, the server 3 instructs the wireless charging sending terminal 42 of the matched charging device 4 to close, and meanwhile, the server 3 marks the charging device 4 with the closed wireless charging sending terminal 42 as idle and normal, and the idle charging device 4 can be matched and charged again.
The system can select the optimal path to charge according to the position matching of the electric vehicle 2 and the nearest charging device 4, the vehicle-mounted power supply 23 of the system is a super capacitor, the charging is faster, the power storage capacity is larger, the condition of inaccurate point-to-point butt charging is avoided in a wireless charging mode, the range charging is realized, a strong error correction function is realized, and the charging can be started even if the position is not a particularly accurate position;
according to the invention, the server 3, the electric vehicle 2 and the charging device 4 are connected through the LoRa network established by the LoRa base station 1, so that the electric vehicle 2 can use the characteristics of low power consumption, long transmission distance, good encryption property and the like of the LoRa network to reduce the proportion of electric energy used for communication with the server 3 on the electric vehicle 2, so that the electric vehicle can use more electric energy for carrying work, and the LoRa network can cover a larger range, so that the electric vehicle 2 can have a larger working range;
the electric vehicle 2 and the charging device 4 are charged through a wireless charging technology, so that the operation of socket butt joint is avoided, the situation of charging failure caused by inaccurate butt joint can not occur any more, the charging range of the charging device 4 covers a certain range through wireless charging, the electric vehicle 2 can be charged as long as the electric vehicle enters the charging range, and the charging error rate is greatly reduced;
the calibration condition of the device is that the electric vehicle 2 and the charging device 4 are required to repeatedly confirm and calibrate the calibration position of the electric vehicle, the condition that the driving position of the electric vehicle 2 is inaccurate is effectively reduced, the charging guide marking 41 is added, the traveling range of the electric vehicle 2 is not wrong primarily, the vehicle-mounted camera 22 is an infrared camera, the vehicle-mounted camera 22 captures the path of the charging guide marking 41, the colors of the charging guide marking 41 and the charging range marking 44 are obviously different from the ground color, the electric vehicle 2 can travel along the charging guide marking 41 and extend to the opening of the charging range marking 44, the electric vehicle 2 can move along with the charging guide marking 41 captured by the vehicle-mounted camera 22 and move to the vicinity of the charging range marking 44 of the matched charging device 4, and at the moment, the vehicle-mounted camera 22 of the electric vehicle 2 captures the position of the charging range marking 44, then the electric vehicle 2 starts to rotate in situ, the electric vehicle 2 is ensured to be positioned in the charging range marking 44, the position of the electric vehicle 2 is confirmed twice, the function is the same as the principle that the tracking robot follows the line to travel, the charging confirmation camera 43 is used for confirming whether the electric vehicle 2 is positioned in place, 3 times of position matching is carried out, the situation that the charging is started without being positioned in place is effectively avoided, if the charging is unsuccessful, the matched position information of the charging device 4 can be returned again, the electric vehicle 2 runs into the charging range marking 44 of the charging device 4 again, the fault of error reporting caused by the unsuccessful charging is avoided, even if the charging is unsuccessful once, the system can correct the electric vehicle 2 again to carry out the position matching, and the error rate of the charging in place is greatly reduced, thereby improving the charging accuracy;
this system charges and does not need personnel's operation, judge the electric quantity state by oneself, and all there is a weighing device on every electric motor car 2, this weighing device is connected with the on-vehicle STM8L152K4 chip on the electric motor car 2, whether the judgement electric motor car that can be accurate is unloaded, thereby the regulation judgement of charging, charging efficiency is improved, the back server can be controlled electric motor car 2 and work once more after the completion of charging, can not make electric motor car 2 have unnecessary idle stop, can make full use of electric motor car 2's operating time, this charging system can reduce electric motor car 2's idle time.
The LoRa name is Long Range Radio, which is characterized in that the distance of the Long Range Radio is longer than that of other Radio modes under the same power consumption condition, thereby realizing the unification of low power consumption and Long distance, and the Long Range Radio is enlarged by 3-5 times than that of the traditional Radio frequency communication under the same power consumption condition;
when any LoRa terminal equipment sends a data packet, the data packet is received by all gateways in the range of the network where the LoRa terminal equipment is located, each message is reported to a network server, all gateways are the same and always receive signals with all data rates on all channels, which means that no overhead is caused on the LoRa terminal equipment because the LoRa terminal equipment does not need to scan and connect to a specific gateway, a sensor is simply awakened to send the data packet, all gateways in the range of the network can receive the data packet, all gateways send the received same data packet to the network server, special hardware and software built in the latest generation gateway are used for capturing high-precision arrival time, and an algorithm at the network server end compares the arrival time, the signal strength, the signal to noise ratio and other parameters to calculate the most possible specific position of the terminal node, the lora network can acquire the specific location of the lora terminal device within the range.
The server 3 is a cloud server, and can also be an SR590-3104 server, if the server is a cloud server, the server is controlled by on-site terminal equipment, and the method belongs to a mature technology, and is not described any more;
an Automated Guided Vehicle (AGV) is a transport Vehicle equipped with an electromagnetic or optical automatic guiding device, which can travel along a predetermined guiding path, and has safety protection and various transfer functions, and a transport Vehicle without a driver in industrial application, and uses a rechargeable battery as its power source, and generally uses a computer to control its traveling route and behavior, or uses an electromagnetic rail to set up its traveling route, the electromagnetic rail is adhered to the floor, and the AGV moves and operates according to the information brought by the electromagnetic rail.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.
Claims (10)
1. The utility model provides a wireless charging system of electric motor car based on loRa network which characterized in that: including electric motor car (2), charging device (4), server (3) and loRa base station (1), through a loRa network is established to loRa base station (1), electric motor car (2), charging device (4) and server (3) are all connected on the loRa network that loRa base station (1) was established, electric motor car (2) and charging device (4) are all controlled by server (3) through the loRa network, charging device (4) are last to have set up wireless transmitting terminal (42) that charges, electric motor car (2) are last to have set up wireless receiving terminal (21) that charges, wireless receiving terminal (21) and wireless transmitting terminal (42) that charges charge through wireless technique.
2. The wireless charging system of electric vehicle based on LoRa network of claim 1, characterized by that: the bottom of electric motor car (2) has still set up wireless receiving terminal (21) that charges, on-vehicle camera (22), vehicle mounted power (23) and on-vehicle loRa module (24) have still been installed on electric motor car (2), vehicle mounted power (23) are connected with wireless receiving terminal (21) electricity that charges, on-vehicle camera (22) and on-vehicle loRa module (24) all are connected with vehicle mounted power (23) electricity, on-vehicle loRa module (24) are through loRa base station (1) and server (3) data connection.
3. The wireless charging system of electric vehicle based on LoRa network of claim 2, characterized in that: the vehicle-mounted camera (22) is an infrared camera, the vehicle-mounted power supply (23) is a super capacitor, and the electric vehicle (2) is an unmanned transport vehicle.
4. The wireless charging system of electric vehicle based on LoRa network of claim 1, characterized by that: the electric vehicle (2) and the charging device (4) are both provided with a plurality of electric vehicles.
5. The wireless charging system of electric vehicle based on LoRa network of claim 4, characterized by that: still include work area (11) and waiting area (12), work area (11), waiting area (12) and all charging device (4) all set up in the scope that LoRa base station (1) covered, the permissible moving range of electric motor car (2) is injectd in the scope of coverage of LoRa base station (1).
6. The wireless charging system of electric vehicle based on LoRa network of claim 5, characterized by that: each of the charging devices (4) comprises
The charging range marked line (44) is a circle of annular coil provided with an opening, the shape of the charging range marked line (44) is the same as that of the vertical projection of the electric vehicle (2), and the surrounding range of the charging range marked line (44) is larger than the vertical projection area of the electric vehicle (2);
the wireless charging transmitting terminal (42) is arranged in a charging range marking (44), the whole conveying range of the wireless charging transmitting terminal (42) covers the charging range marking (44), and the wireless charging transmitting terminal (42) is embedded on the ground;
one end of the charging guide marking (41) is connected with the waiting area (12), and the other end of the charging guide marking (41) is connected with an opening of the charging range marking (44);
and the charging confirmation camera (43), the charging confirmation camera (43) is arranged on one side of the charging range marking (44), and the charging confirmation camera (43) is opposite to the wireless charging transmitting end (42).
7. A control method of an electric vehicle wireless charging system based on a LoRa network is characterized in that: the method for controlling the wireless charging system for the electric vehicle based on the LoRa network is required to be provided into the wireless charging system for the electric vehicle based on the LoRa network in claims 1 to 6, and comprises the following steps:
step 1, classifying a plurality of electric vehicles (2) and a plurality of charging devices (4), numbering the electric vehicles and the charging devices independently, recording the numbers into a server (3), recording position data of each charging device (4) into the server (3), corresponding the position data of each charging device (4) to the numbers of the charging devices one by one, and recording the position data of a working area (11) and a waiting area (12) into the server (3);
step 2, establishing an LoRa network through the LoRa base station (1), ensuring that the LoRa network covers a working area (11), a waiting area (12), all charging devices (4) and all electric vehicles (2), and connecting the electric vehicles (2) and the charging devices (4) with a server (3) through the LoRa network;
step 3, when any electric vehicle (2) is low in electric quantity and no-load, a low electric signal is sent to the server (3);
step 4, when the server (3) receives a low electric signal of the electric vehicle (2), matching the electric vehicle (2) with the number of the idle and normal charging device (4) which is already recorded in the server (3), if the idle and normal charging device (4) exists, entering step 6, and if the idle and normal charging device (4) does not exist, entering step 5;
step 5, the server (3) instructs the electric vehicle (2) to enter a waiting area (12) for queuing and waiting, and returns to the step 3;
step 6, matching the number of the idle charging device (4) with the electric vehicle (2) sending a low electric signal, sending the position data of the charging device (4) to the electric vehicle (2), simultaneously indicating the electric vehicle (2) to drive into the matched charging device (4) according to the indication line of the charging guide marking line (41), and marking the matched charging device (4) as busy;
7, after the vehicle-mounted camera (22) of the electric vehicle (2) shoots that the electric vehicle (22) is positioned in the charging range marking (44) of the matched charging device (4), the electric vehicle (2) sends a positioning signal to the server (3);
step 8, after the server (3) receives the confirmation signal, starting the matched charging device (4), starting a charging confirmation camera (43) on the charging device (4) to operate and searching whether the electric vehicle (2) is in a charging position;
step 9, the charging device (4) sends a signal for confirming the in-position to the server (3), the server (3) instructs the charging device (4) to start the wireless charging sending terminal (42) and start to charge the electric vehicle (2), if the charging is successful, the step 12 is carried out, and if the charging is unsuccessful, the step 10 is carried out;
step 10, marking the electric vehicle (2) which is not successfully charged and the matched charging device (4) as a monitoring device for 1 time each time, returning to step 6, and entering step 11 if the same electric vehicle (2) or the same charging device (4) is marked for 2 times within a certain time t;
step 11, the server (3) sends an equipment fault notification to a worker, the electric vehicle (2) marked as the fault equipment and the charging device (4) are closed by the server (3), after the service personnel completes the maintenance, the fault equipment completed in the maintenance is restarted, the fault equipment is directly and manually matched and charged, and the step 12 is carried out;
step 12, the electric vehicle (2) keeps charging continuously, the wireless charging transmitting end (42) of the charging device (4) keeps on being started, the wireless charging receiving end (21) of the electric vehicle (2) starts to receive charging of the wireless charging transmitting end (42), the wireless charging receiving end (21) stores received electric energy into the vehicle-mounted power supply (23), the vehicle-mounted power supply (23) of the electric vehicle (2) sends a charging completion signal to the server (3) after being fully charged, and the server (3) receives the charging completion signal and indicates the electric vehicle (2) which is charged to return to a working area.
And step 13, after the electric vehicle (2) enters the working area (11) according to the indication of the server (3), the server (3) indicates the wireless charging sending end (42) of the matched charging device (4) to be closed, and meanwhile, the server (3) marks the charging device (4) with the closed wireless charging sending end (42) as idle and normal.
8. The method for controlling the wireless charging system of the electric vehicle based on the LoRa network as claimed in claim 7, wherein: the normal charging device (4) is the charging device (4) except the fault marking device.
9. The method for controlling the wireless charging system of the electric vehicle based on the LoRa network as claimed in claim 7, wherein: the charging guide marking (41) of the matched charging device (4) is detected by the vehicle-mounted camera (22) of the electric vehicle (2), the electric vehicle (2) feeds back a signal capturing the charging guide marking (41) to the server (3), the server (3) indicates the electric vehicle (2) to move along the charging guide marking (41) to the direction of the matched charging device (4) and indicates the electric vehicle (2) to drive into the charging range marking (44), and the server (3) indicates the electric vehicle (2) to stay in the charging range marking (44).
10. The method for controlling the wireless charging system of the electric vehicle based on the LoRa network as claimed in claim 7, wherein: when the electric quantity of the electric vehicle (2) is as low as 10% or less of the total electric quantity, and the electric vehicle (2) is in an idle state, the electric vehicle (2) sends a low electric signal to the server (3), and the time t is 5 minutes.
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