CN117835191A - Vehicle-to-machine communication method under short-distance multi-station networking scene - Google Patents
Vehicle-to-machine communication method under short-distance multi-station networking scene Download PDFInfo
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- CN117835191A CN117835191A CN202311851354.2A CN202311851354A CN117835191A CN 117835191 A CN117835191 A CN 117835191A CN 202311851354 A CN202311851354 A CN 202311851354A CN 117835191 A CN117835191 A CN 117835191A
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- 238000004891 communication Methods 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000006855 networking Effects 0.000 title claims abstract description 18
- 238000012546 transfer Methods 0.000 claims abstract description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
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Abstract
The invention discloses a vehicle-to-machine communication method under a close-range multi-station networking scene, which comprises the following steps: s1, designating a power exchange station in a power exchange station group as a master station, starting a wireless communication function, closing the wireless communication function of the rest power exchange stations in the group as slave stations, and then establishing wired communication connection between the master station and each slave station; s2, when the vehicle enters the target power exchange station, the vehicle machine and the master station are in wireless communication connection, and the master station searches the target power exchange station in a wired communication mode according to a communication message initiated by the vehicle machine and then establishes a communication forwarding link between the vehicle machine and the target power exchange station as a 'transfer station'. The invention is connected between the master station and each slave station in a wired communication mode, and only the master station provides a wireless communication connection function with the vehicle-mounted device, so that when a plurality of power switching stations are built in a short distance, the vehicle-mounted device can not be connected with the power switching stations by mistake due to wireless signal interference between the stations.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a vehicle-to-machine communication method under a short-distance multi-station networking scene.
Background
When the vehicle arrives at the power exchange station for power exchange, the vehicle machine system in the vehicle firstly tries to establish wireless communication connection with the power exchange station through wireless communication modes such as wifi, but in the area with larger power exchange demand, a plurality of power exchange stations can be built in a short distance, wireless communication signals between the power exchange stations can generate interference, the phenomenon that the vehicle machine is connected with the power exchange station A and is actually connected with the power exchange station B can occur, or the power exchange station A is correctly connected when the vehicle machine enters the power exchange station, but in the power exchange process, the wireless communication connection is unstable and is connected with the power exchange station B.
Disclosure of Invention
The invention provides a vehicle-to-machine communication method in a short-distance multi-station networking scene, aiming at avoiding the fault connection and unstable connection of the vehicle-to-machine in the short-distance wireless communication connection with a plurality of power exchange stations.
To achieve the purpose, the invention adopts the following technical scheme:
the vehicle-to-machine communication method under the short-distance multi-station networking scene comprises the following steps:
s1, designating a power exchange station in a power exchange station group as a master station, starting a wireless communication function, closing the wireless communication function of the rest power exchange stations in the group as slave stations, and then establishing wired communication connection between the master station and each slave station;
s2, when a vehicle enters a target power exchange station, a vehicle machine of the vehicle is in wireless communication connection with the master station, and the master station searches the target power exchange station in a wired communication mode according to a communication message initiated by the vehicle machine and then serves as a 'transfer station' to establish a communication forwarding link between the vehicle machine and the target power exchange station.
Preferably, the wireless connection mode of the vehicle-mounted device and the master station is wifi.
Preferably, the method for the master station to find the target power exchange station specifically includes the steps of:
s21, the master station analyzes a first unique identification code of the vehicle from the communication message;
s22, after each secondary station identifies the second unique identification code of each vehicle, the second unique identification code is transmitted to the master station in a wired mode;
s23, the master station compares the consistency of each second unique identification code with the first unique identification code,
if the comparison is successful, judging that the secondary station which transmits the second unique identification code is the target battery exchange station of the vehicle;
if the comparison identifies, it is determined that the currently determined slave station is not the target battery exchange station of the vehicle.
Preferably, the first unique identification code includes a VIN code and/or a license plate number of the vehicle.
Preferably, the target power exchange station identifies the second unique identification code through any one or more of license plate identification equipment, ETC identification equipment and RFID radio frequency identification equipment, and the second unique identification code comprises the VIN code and/or license plate number of the vehicle.
The invention is connected between the master station and each slave station in a wired communication mode, and only the master station provides a wireless communication connection function with the vehicle-mounted device, so that when a plurality of power switching stations are built in a short distance, the vehicle-mounted device can not be connected with the power switching stations by mistake due to wireless signal interference between the stations.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are required to be used in the embodiments of the present invention will be briefly described below. It is evident that the drawings described below are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 is a step diagram of implementing a vehicle-to-machine communication method in a short-distance multi-station networking scene according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a prior art close-range multi-exchange power plant network;
FIG. 3 is a schematic diagram of a close-range multi-station networking provided by the invention;
fig. 4 is a network architecture diagram of a short-distance multi-exchange power station networking provided by the invention.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
The vehicle-to-machine communication method under the short-distance multi-station networking scene provided by the embodiment of the invention has the following technical principle:
when a plurality of power exchange stations are built in a short distance, one power exchange station (named as a master station) starts a wireless communication function, for example, a wifi connection function is started, other residual power exchange stations (named as slave stations) close an infinite communication function, the master station is responsible for receiving wireless communication connection requests of all vehicle machines, and the master station automatically matches out the target power exchange station which the vehicle currently enters by a wired communication mode with each slave station according to the communication content of the vehicle machines and the recognition result of a vehicle recognition system of the target power exchange station (possibly the slave station or the master station) which the vehicle enters, then establishes a communication forwarding link between the vehicle machine of the vehicle and the target power exchange station, and plays the role of the communication forwarding station. In this way, the vehicle machine of the vehicle entering the target power exchange station communicates with the master station in a wireless mode, the master station communicates with each slave station in a wired mode, and when all vehicles enter any power exchange station built in a short distance, the vehicles are only connected with the master station in a wireless mode, and other slave stations cannot generate wireless communication interference on the wireless communication connection established between the master station and the slave stations.
The networking mode of the conventional short-distance multi-exchange power station is described below with reference to the accompanying drawings:
at present, each of a plurality of power stations built in a short distance starts a wireless communication function, as shown in fig. 2, the power stations 1 and 2 start wifi functions for wireless connection of a vehicle, after the vehicle enters the power stations 2, the vehicle system of the vehicle may establish wireless communication connection with the power stations 1 due to the close distance between the power stations 2 and 1, and a communication connection error occurs, at this time, the power exchange request sent to the power stations 2 by the vehicle machine is sent to the power stations 1 in error, which can cause the power stations 1 to execute meaningless power exchange actions, and the power stations 2 cannot execute normal power exchange procedures.
In the present invention, as shown in fig. 3, the exchange station 1 and the exchange station 2 implement communication connection with each other through the wired connection mode of the ethernet, if the exchange station 1 is designated as the master station, the exchange station 1 opens the wireless communication function, and the exchange station 2 closes the function, so that the vehicle is required to establish wireless communication connection with the exchange station 1 regardless of whether the vehicle enters the exchange station 1 or the exchange station 2, but the vehicle is required to establish communication connection with the exchange station 2, the exchange station 2 is required to execute corresponding power exchange action according to the power exchange instruction of the vehicle, so that after the exchange station 1 establishes wireless communication connection with the vehicle, the exchange station 1 further automatically matches the target exchange station (such as the exchange station 2) which the vehicle actually wants to establish communication connection according to the communication content of the vehicle, and the data interaction in the matching process is through the wired communication mode of the exchange station 1 and the exchange station 2, thereby not only avoiding the problem that the vehicle machine with a plurality of exchange stations close to open the wireless communication function can be erroneously established, but also achieving the purpose that the data interaction between the two parties and the electric exchange station is not possible through the automatic matching process of the target exchange station in the wired communication mode.
The following describes a vehicle-to-machine communication method in a short-distance multi-station networking scene provided by the embodiment of the invention with reference to fig. 4:
the power exchange station A in fig. 4 is a main station, the power exchange station A starts wifi signals through wireless AP equipment, and the signal range covers the power exchange station A, the power exchange station B, the power exchange station C, the power exchange station D and a power exchange area through which a vehicle needs to pass in fig. 4. And after the Wifi is started, the power exchange station A enters a vehicle-machine connection waiting state.
When the vehicles enter the wireless signal coverage area, the vehicle machines of the vehicles automatically establish wifi connection with the power exchange station A, each vehicle machine of each vehicle is connected with the power exchange station A, and the power exchange station A creates a corresponding vehicle machine communication processing task for the connection.
The vehicle machine of the vehicle communicates with a power exchange station A serving as a main station through wifi, and after the power exchange station A receives a communication message sent by the vehicle machine, the content of the communication message is analyzed to obtain a first unique identification code (such as VIN code and/or license plate number of the vehicle) of the vehicle which needs to be electrified at present.
The battery exchange vehicle continues to travel until it stops in the battery exchange area of the target battery exchange station (e.g., battery exchange station D in fig. 4). At this time, the vehicle identification device (such as license plate identification device, ETC identification device, RFID radio frequency identification device, etc.) of the station D recognizes the second unique identification code of the vehicle and sends the second unique identification code to the station a as the master station through a wired manner (ethernet cable).
The station A compares the second unique identification code sent by each secondary station with the first unique identification code in consistency, if the matching is successful, the secondary station is judged to be the target station of the vehicle, otherwise, the secondary station is judged not to be the target station of the vehicle.
After finding the target power exchange station of the vehicle, the master station establishes an independent communication forwarding link between the vehicle and the target power exchange station as a 'transfer station' for communication between the vehicle and the target power exchange station, the communication message received by the subsequent master station from the vehicle through wifi is sent to the target power exchange station through a wired connection section in the forwarding link as is, likewise, the master station receives the communication message sent to the vehicle by the target power exchange station, and forwards the communication message to the vehicle through a wireless connection section in the forwarding link, and the master station has a function similar to a forwarding route.
After the power is replaced, the vehicle drives away from the wireless signal coverage area of the master station, the vehicle-to-vehicle communication is finished, and the master station releases a communication forwarding link established for the vehicle-to-vehicle of the vehicle and enters a waiting state of wifi connection with the next vehicle.
In summary, the vehicle-to-machine communication method under the short-distance multi-station networking scene provided by the embodiment of the invention comprises the following steps:
s1, designating a power exchange station in a power exchange station group as a master station, starting a wireless communication function, closing the wireless communication function of the rest power exchange stations in the group as slave stations, and then establishing wired communication connection between the master station and each slave station;
s2, when the vehicle enters the target power exchange station, the vehicle machine and the master station are in wireless communication connection, and the master station searches the target power exchange station in a wired communication mode according to a communication message initiated by the vehicle machine and then establishes a communication forwarding link between the vehicle machine and the target power exchange station as a 'transfer station'.
The invention is connected between the master station and each slave station in a wired or wireless communication mode, and only the master station provides a wireless communication connection function with the vehicle machine, so that when a plurality of power exchange stations are established in a short distance, the vehicle machine can not erroneously connect the power exchange stations due to wireless signal interference between the stations.
According to the invention, each power exchange station has the functions of fire disaster early warning and processing, and by installing the camera, the smoke temperature sensor and other devices on each power exchange station, the power exchange station is monitored in all directions, when fire disaster is identified, dangerous information can be timely reported to inform cloud workers, meanwhile, the camera marks dangerous positions, and batteries on the left side and the right side of the dangerous positions are rapidly moved to the two sides through the sliding rail, so that normal batteries are prevented from being swept, and loss is reduced. Meanwhile, the fire-fighting equipment is started to cool down and extinguish the fire of the dangerous battery. The method specifically comprises the following steps:
step S1: a certain battery in the battery bin is out of temperature and fires due to abnormal reasons;
step S2: the smoke temperature sensor recognizes fire, the alarm information is transmitted to the station control through the Ethernet, and the station control forwards the information to the cloud through the mqtt protocol.
And step S3, the cloud receives the station control alarm information, sends out a fire alarm and informs the attendees.
And S4, after receiving the information of the smoke temperature sensor, the station control identifies the dangerous battery bin position by calling an API (application program interface) of the camera, and transmits bin position information back to the station control, wherein the station control stores the dangerous battery bin position information and battery information on the corresponding bin position, including the sn number of the battery, the battery capacity and the like. And the cloud is reported through the event EVT_FIGHTING_BAT_DATA. And the cloud displays the dangerous battery information.
And S5, when the cloud personnel receives the fire alarm, the fire battery can be identified through the camera, and the normal battery is manually controlled to move away from the fire battery.
And S6, standing control is carried out through the position of the bin of the ignition battery, and the moving direction of the normal battery is judged. The principle of movement is to keep the normal battery as far away from the fire source as possible. And the outermost battery stops moving at a position ten cm away from the edge of the sliding rail, and the interval between the two batteries is less than five cm.
Further, the station control determines the moving direction and the moving distance of each normal battery according to the position of the fire battery bin and the position of each normal battery bin, and sends a moving instruction containing the moving direction and the moving distance to the pulley base corresponding to each normal battery, so that the pulley base corresponding to each normal battery moves the normal battery to a safe position area according to the moving direction and the moving distance in the moving instruction.
And S7, after all normal batteries stop moving and move to a safe position area, powering off all the chargers by the station control, and cooling and extinguishing the fire battery by controlling fire-fighting spraying above the bin of the corresponding fire battery.
And S8, the cloud personnel manually control a spraying system above the ignition battery to cool and extinguish the fire in the thermal power pond.
And S9, acquiring temperature data through a smoke temperature sensor, and controlling the aerocar plc to grasp the dangerous battery when the temperature data is recovered to normal temperature, transferring the dangerous battery into a fire-fighting bin outside the bin, and completely immersing the battery in water to prevent secondary ignition of the battery.
After all the chargers are powered off by the station control, the station control acquires current position information of the aerocar, generates a running track according to the position information and the position information of the ignition battery, sends the track information and the position information of the ignition battery to the aerocar plc, controls the aerocar plc to capture dangerous batteries when the aerocar reaches the position of the ignition position, and transfers the dangerous batteries to the fire-fighting cabin outside the cabin when the temperature data is recovered to normal temperature.
It should be understood that the above description is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be apparent to those skilled in the art that various modifications, equivalents, variations, and the like can be made to the present invention. However, such modifications are intended to fall within the scope of the present invention without departing from the spirit of the present invention. In addition, some terms used in the specification and claims of the present application are not limiting, but are merely for convenience of description.
Claims (5)
1. The vehicle-to-machine communication method in the short-distance multi-station networking scene is characterized by comprising the following steps:
s1, designating a power exchange station in a power exchange station group as a master station, starting a wireless communication function, closing the wireless communication function of the rest power exchange stations in the group as slave stations, and then establishing wired communication connection between the master station and each slave station;
s2, when a vehicle enters a target power exchange station, a vehicle machine of the vehicle is in wireless communication connection with the master station, and the master station searches the target power exchange station in a wired communication mode according to a communication message initiated by the vehicle machine and then serves as a 'transfer station' to establish a communication forwarding link between the vehicle machine and the target power exchange station.
2. The vehicle-to-machine communication method in a short-distance multi-station networking scene according to claim 1, wherein the wireless connection mode between the vehicle-to-machine and the master station is wifi.
3. The method for vehicle-to-machine communication in a short-range multi-station networking scenario according to claim 1, wherein the method for the master station to find the target power exchange station specifically comprises the steps of:
s21, the master station analyzes a first unique identification code of the vehicle from the communication message;
s22, after each secondary station identifies the second unique identification code of each vehicle, the second unique identification code is transmitted to the master station in a wired mode;
s23, the master station compares the consistency of each second unique identification code with the first unique identification code,
if the comparison is successful, judging that the secondary station which transmits the second unique identification code is the target battery exchange station of the vehicle;
if the comparison identifies, it is determined that the currently determined slave station is not the target battery exchange station of the vehicle.
4. A method of vehicle-to-machine communication in a short-range, multi-station networking scenario according to claim 3, wherein the first unique identification code comprises the VIN code and/or license plate number of the vehicle.
5. A vehicle-to-machine communication method in a short-range multi-station networking scenario according to claim 3, wherein the target battery-replacement station identifies the second unique identification code by any one or more of license plate identification equipment, ETC identification equipment, RFID radio frequency identification equipment, and the second unique identification code includes VIN code and/or license plate number of the vehicle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311851354.2A CN117835191A (en) | 2023-12-29 | 2023-12-29 | Vehicle-to-machine communication method under short-distance multi-station networking scene |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311851354.2A CN117835191A (en) | 2023-12-29 | 2023-12-29 | Vehicle-to-machine communication method under short-distance multi-station networking scene |
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| CN117835191A true CN117835191A (en) | 2024-04-05 |
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| CN202311851354.2A Pending CN117835191A (en) | 2023-12-29 | 2023-12-29 | Vehicle-to-machine communication method under short-distance multi-station networking scene |
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- 2023-12-29 CN CN202311851354.2A patent/CN117835191A/en active Pending
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