CN113132032A - Double-ring staggered high-speed magnetic levitation communication field strength testing method and system - Google Patents
Double-ring staggered high-speed magnetic levitation communication field strength testing method and system Download PDFInfo
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- CN113132032A CN113132032A CN202110410567.6A CN202110410567A CN113132032A CN 113132032 A CN113132032 A CN 113132032A CN 202110410567 A CN202110410567 A CN 202110410567A CN 113132032 A CN113132032 A CN 113132032A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/12—Measuring electrostatic fields or voltage-potential
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
- H04B10/25752—Optical arrangements for wireless networks
- H04B10/25753—Distribution optical network, e.g. between a base station and a plurality of remote units
- H04B10/25755—Ring network topology
Abstract
The invention discloses a method and a system for testing the field intensity of high-speed maglev communication with double-ring staggering, wherein two ground base station ring networks distributed in a horizontal staggering way are set into two different working modes, namely a normal communication mode and a field intensity testing mode, so that the base station communication and the field intensity testing are mutually matched, the base station is automatically measured when a high-speed maglev train normally runs, the base station is automatically closed after the measurement is finished, the measured data accurately reflects the field intensity change along a track during the normal running process of the high-speed maglev train, and the normal running of the whole maglev train communication system is ensured.
Description
Technical Field
The invention relates to the technical field of microwave communication testing, in particular to a method and a system for testing the field intensity of double-ring staggered high-speed magnetic levitation communication.
Background
After the travelling track is initially built, in order to test the electromagnetic environment of the train in operation, assist in completing antenna adjustment, network optimization and the like, the field intensity along the track needs to be tested, and therefore the normal operation of the whole maglev train communication system is ensured. The field strength is short for the electric field strength, and is the magnitude of an electric signal induced by the antenna at a point in space to represent the electric field strength of the point. The field intensity measurement has important significance for evaluating the working state of the system and verifying the working performance of the system in the field of wireless communication.
At present, most radio systems for railway and subway communication work in a 2.4GHz or 5.8GHz frequency band, the working frequency is low, and field intensity measurement of base stations is mostly finished by adopting a spectrum analyzer, such as an FSP-13 digital spectrum analyzer of Germany R & S company, wherein the measurement frequency range is 9 kHz-13 GHz. When field intensity measurement is carried out, all base stations of the radio system need to be opened, and professional testers test the base stations one by adopting the spectrum analyzers.
The communication system of the high-speed maglev train adopts 38GHz millimeter wave communication, the traditional low-frequency spectrum analyzer is not suitable for field intensity test of high-frequency signals, and the field intensity measurement is carried out on the high-speed maglev communication on the construction site by adopting a special field intensity test vehicle at present, but because fuel oil and power supply are needed in the test process of the special field intensity test vehicle, testers need to take a special tractor to observe signals of the spectrum analyzer in real time, so that the method is time-consuming, labor-consuming and cost-consuming. In addition, the field intensity measuring method of the base station generally has no matched automatic measuring system, the field intensity measuring equipment and the data of the base station to be measured are not communicated, all the base stations need to be opened in the testing process to carry out field intensity test one by one, the measured data are recorded by professional personnel, and the workload is large. In addition, the method for measuring the field intensity of the base station is completed before the train is on track, and has certain deviation with the field intensity value in the actual running process of the train.
Therefore, the existing field intensity test method generally has the problems of large workload, difficult operation, lack of automation and the like, and is not suitable for ground field intensity test of a high-speed maglev train communication system.
Disclosure of Invention
The invention aims to solve the technical problems that the existing field intensity test method generally has the problems of large workload, difficult operation, lack of automation and the like, and is not suitable for ground field intensity test of a high-speed maglev train communication system. Therefore, the invention provides a double-ring staggered high-speed maglev communication field strength test method and system, two ground base station ring networks distributed in a horizontal staggered manner are set into two different working modes (normal communication mode or field strength test mode), so that a base station and test equipment are matched with each other, the field strength is automatically measured when a train normally runs, the base station is automatically closed after the field strength is measured, and the measured data accurately reflects the field strength change along the track during the normal running process of a high-speed maglev train, thereby ensuring the normal running of the whole maglev train communication system.
The invention is realized by the following technical scheme:
a double-ring staggered high-speed magnetic levitation communication field strength test method comprises a ground base station looped network A and a ground base station looped network B; all the ground base stations in the two ground base station ring networks are horizontally distributed in a staggered manner and are connected to a ground partition control unit through an optical fiber network along the running track of the high-speed maglev train, so that the ground partition control unit can communicate with the two ground base station ring networks; each ground base station looped network comprises M ground base stations, each ground base station looped network comprises two working modes, namely a normal communication mode or a field intensity test mode, and if the working mode of one ground base station looped network is the normal communication mode, the working mode of the other ground base station looped network is the field intensity test mode; taking the ground base station looped network in a normal communication mode as a communication looped network, and taking the ground base station looped network in a passive field intensity test mode as a test looped network;
the specific testing steps are as follows:
s1: the ground partition control unit sets one of the ground base station looped networks as a normal communication mode, and the other ground base station looped network as a field intensity test mode; the high-speed maglev train starts to normally run, and the vehicle-mounted base station 1 transmits real-time position information of the high-speed maglev train to the communication ring network;
s2: when the mth ground base station of the communication ring network receives the real-time position information of the high-speed maglev train, the mth ground base station of the communication ring network immediately sends the real-time position information of the high-speed maglev train to a ground partition control unit, wherein m is more than or equal to 1 and less than or equal to m;
s3: the ground partition control unit opens an nth ground base station of a test ring network based on the acquired real-time position information of the high-speed maglev train so that the nth ground base station of the test ring network transmits a field intensity measurement signal to a vehicle-mounted base station 2, wherein n is more than or equal to 1 and less than or equal to M; wherein m is n;
s4: the ground zone control unit can communicate with the vehicle-mounted base station 1 through a communication network which is connected with the vehicle-mounted base station 1, a communication ring network and the ground zone control unit; after the ground partition control unit opens the nth ground base station of the test ring network, the generated field strength test confirmation information is sent to the vehicle-mounted base station 1 through the mth ground base station of the communication ring network; after receiving the field strength test confirmation information corresponding to the nth ground base station of the test ring network sent by the ground partition control unit, the vehicle-mounted base station 1 sends a base station field strength test starting instruction to the vehicle-mounted base station 2, and the vehicle-mounted base station 2 measures a field strength measurement signal sent by the nth ground base station of the test ring network based on the field strength test instruction;
s5: the ground partition control unit judges whether the nth ground base station of the test ring network completes field intensity measurement according to the real-time position information of the high-speed maglev train, if so, the next ground base station of the test ring network is opened to transmit a field intensity measurement signal, namely n is n +1, and the nth ground base station of the test ring network is closed at the same time;
s6: the ground partition control unit judges whether the high-speed maglev train is in the communication coverage range of the mth ground base station of the communication ring network according to the real-time position information of the high-speed maglev train, if the high-speed maglev train is moved out of the communication coverage range of the mth ground base station of the communication ring network, the next ground base station of the communication ring network is opened, namely m is m +1, and the mth ground base station of the communication ring network is closed at the same time;
s7: repeating the steps S2-S6 until the field strengths of all ground base stations in the test ring network are measured;
s8: and modifying the working mode of the communication ring network into a field strength test mode, modifying the working mode of the test ring network into a normal communication mode, and executing the step S2-the step S7 again.
Furthermore, the working mode of the ground base station looped network is set through a ground partition control unit; specifically, the two ground base station ring networks refer to ring networks formed by serially connecting ground base stations through optical fiber networks along two sides of a train running track, and the two ground base station ring networks are connected to the ground partition control unit, so that the ground partition control unit can communicate with the two ground base station ring networks;
before the high-speed maglev train normally runs, the ground partition control unit sets the initial working modes of the two ground base station looped networks, and after the ground partition control unit judges that all ground base stations in the test looped networks finish the field intensity test, the working modes of the two ground base station looped networks are exchanged.
Furthermore, a positioning sensor is arranged on the high-speed maglev train and used for capturing real-time position information of the high-speed maglev train in real time.
Furthermore, all the ground base stations of the two ground base station ring networks are horizontally distributed in a staggered mode along the track of the high-speed magnetic suspension train.
A double-ring staggered high-speed magnetic levitation communication field strength test system comprises two ground base station ring networks, a ground partition control unit, a vehicle-mounted base station 1 and a vehicle-mounted base station 2;
wherein, all base stations of the two ground base station ring networks are distributed in a horizontally staggered way,
the system comprises a ground zone control unit, a plurality of ground base station ring networks and a plurality of ground base station ring networks, wherein the ground zone control unit is connected to the ground zone control unit through an optical fiber network along a train running track, so that the ground zone control unit can communicate with the two ground base station ring networks; each ground base station ring network comprises M ground base stations; each ground base station looped network comprises two working modes, namely a normal communication mode or a field intensity test mode, and if the working mode of one ground base station looped network is the normal communication mode, the working mode of the other ground base station looped network is the field intensity test mode; taking the ground base station looped network in a normal communication mode as a communication looped network, and taking the ground base station looped network in a passive field intensity test mode as a test looped network;
the communication ring network is used for sending the real-time position information of the high-speed maglev train to a ground partition control unit immediately by the mth ground base station of the communication ring network after the mth ground base station of the communication ring network receives the real-time position information of the high-speed maglev train, wherein m is more than or equal to 1 and less than or equal to m;
the ground partition control unit is used for opening an nth ground base station of a test ring network based on the acquired real-time position information of the high-speed maglev train so as to enable the nth ground base station of the test ring network to transmit a field intensity measurement signal to the vehicle-mounted base station 2, and after the nth ground base station of the test ring network is opened by the ground partition control unit, field intensity test confirmation information is generated and sent to an mth base station of the communication ring network; wherein m is n;
the ground partition control unit is further used for judging whether the high-speed maglev train is in the communication coverage range of the mth ground base station of the communication ring network according to the real-time position information of the high-speed maglev train, if the high-speed maglev train is moved out of the communication coverage range of the mth ground base station of the communication ring network, the next ground base station of the communication ring network is opened, namely m is m +1, and the mth ground base station of the communication ring network is closed at the same time;
the ground partition control unit is also used for judging whether the nth ground base station of the test ring network completes field intensity measurement according to the real-time position information of the high-speed magnetic suspension train, if so, the next ground base station of the test ring network is opened to transmit a field intensity measurement signal, namely n is n +1, and the nth ground base station of the test ring network is closed at the same time;
the vehicle-mounted base station 1 is used for transmitting the real-time position information of the high-speed maglev train to the communication ring network when the high-speed maglev train starts to normally run; after the ground partition control unit sends the field strength test confirmation information corresponding to the nth ground base station of the test ring network to the vehicle-mounted base station 1 through the mth ground base station of the communication ring network, a base station starting field strength test instruction is sent to the vehicle-mounted base station 2;
the vehicle-mounted base station 2 is used for measuring a field intensity measurement signal transmitted by the nth ground base station of the test ring network based on the field intensity test instruction;
the ground partition control unit is also used for setting one of the ground base station looped networks to be in a normal communication mode, and the other ground base station looped network to be in a field intensity test mode; and after testing the field intensity of all the ground base stations in one testing ring network, modifying the working mode of the communication ring network into a field intensity testing mode, modifying the working mode of the testing ring network into a normal communication mode, and continuously executing the steps of testing the field intensity correspondence of the ground base station ring network, the vehicle-mounted base station 1 and the vehicle-mounted base station 2.
Furthermore, the double-loop staggered high-speed magnetic-levitation communication field strength testing system also comprises a positioning device arranged on the track of the high-speed magnetic-levitation train, and a positioning sensor on the high-speed magnetic-levitation train is used for capturing the position information of the high-speed magnetic-levitation train in real time.
The invention provides a double-loop staggered high-speed maglev communication field strength test method and system, which are characterized in that two ground base station looped networks distributed in a horizontal staggered manner are switched on and off, so that base station communication and field strength test are mutually matched, the field strength is automatically measured when a high-speed maglev train normally runs, the base station is automatically closed after the field strength is measured, and measured data accurately reflects the field strength change along a track during the normal running process of the high-speed maglev train, so that the normal running of the whole maglev train communication system is ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic diagram of ground base station distribution in a double-ring staggered high-speed magnetic levitation communication field strength testing method of the invention.
FIG. 2 is a schematic diagram of a method for testing the strength of the double-loop staggered high-speed magnetic levitation communication field according to the present invention.
FIG. 3 is a flow chart of a double-loop staggered high-speed magnetic levitation communication field strength testing method according to the present invention.
FIG. 4 is a schematic diagram of a double-ring staggered high-speed magnetic levitation communication field strength testing system according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
As shown in fig. 1-3, the present invention provides a double-ring staggered high-speed magnetic levitation communication field strength testing method, which comprises two ground base station ring networks arranged along a track of a high-speed magnetic levitation train, wherein all ground base stations of the two ground base station ring networks are horizontally staggered and distributed, and are connected to a ground partition control unit through an optical fiber network along the running track of the high-speed magnetic levitation train, so that the ground partition control unit can communicate with the two ground base station ring networks. Each ground base station ring network comprises M ground base stations, and the interval between the ground base stations is set according to the actual situation (such as the interval of 1 kilometer). Each ground base station looped network comprises two working modes, namely a normal communication mode or a field strength test mode, wherein the looped network working in the normal communication mode is used as a communication looped network, and the looped network working in the field strength test mode is used as a test looped network.
Specifically, the method for testing the field strength of the double-ring staggered high-speed magnetic levitation communication in the embodiment specifically includes the following steps:
s1: the ground partition control unit sets one of the ground base station ring networks as a communication ring network A, and the other ground base station ring network as a test ring network B; and the high-speed maglev train starts to normally run, and the vehicle-mounted base station 1 transmits the real-time position information of the high-speed maglev train to the communication ring network A.
In order to realize that the field intensity can be tested in the normal running process of the high-speed maglev train, two types of vehicle-mounted base stations, namely a vehicle-mounted base station 1 and a vehicle-mounted base station 2, are arranged on the high-speed maglev train in the embodiment. The vehicle-mounted base station 1 is a base station which is arranged on the high-speed magnetic suspension train and used for information interaction with a ground base station; the vehicle-mounted base station 2 is a base station which is arranged on the high-speed maglev train and is used for carrying out field intensity test.
Specifically, AmRepresenting the mth ground base station of the communication ring network, BnAnd the nth ground base station of the test ring network is shown. Wherein, when the ground base stations in the test ring network B and the communication ring network A are arranged, the ground base stations are horizontally staggered based on the running direction of the high-speed magnetic suspension train, for example, AmAt the horizontal x position of one side of the high-speed maglev train track, BnAt the horizontal x + a position A on the other side of the high-speed maglev train trackm+1In a with AmHorizontal x +2a position on the same side, Bm+1In and BmHorizontal x +2a position on the same side, and so on.
S2: and after the mth ground base station of the communication ring network receives the real-time position information of the train, the mth ground base station of the communication ring network immediately sends the real-time position information of the train to the ground partition control unit, wherein m is more than or equal to 1 and less than or equal to M.
S3: the ground partition control unit opens an nth ground base station of the test ring network based on the acquired real-time position information of the high-speed maglev train, so that the nth ground base station of the test ring network transmits a field intensity measurement signal to the vehicle-mounted base station 2, wherein n is more than or equal to 1 and less than or equal to M; wherein m is n. After the first ground base station of the communication ring network receives the real-time position information of the train, the ground partition control unit opens the first ground base station of the testing ring network; and when the second ground base station of the communication ring network receives the real-time position information of the train, the ground partition control unit opens the second ground base station of the test ring network.
S4: through the communication network that on-vehicle base station 1, communication looped netowrk and ground subregion control unit connect, ground subregion control unit can communicate with on-vehicle base station 1. After the ground partition control unit opens the nth ground base station of the test ring network, the ground partition control unit sends the field strength test confirmation information corresponding to the nth ground base station of the test ring network to the vehicle-mounted base station 1 through the mth ground base station of the communication ring network. After receiving the information confirmed by the field strength test corresponding to the nth base station of the test ring network sent by the ground partition control unit, the vehicle-mounted base station 1 sends a base station field strength test starting instruction to the vehicle-mounted base station 2, and the vehicle-mounted base station 2 measures the field strength measurement signal transmitted by the nth ground base station of the test ring network based on the field strength test instruction.
Specifically, when the vehicle-mounted base station 1 transmits the real-time position information of the high-speed maglev train, the signal frequency is f1, the working frequency of the wireless communication between the communication ring network and the vehicle-mounted base station is f1, and the working frequency of the field intensity measurement between the vehicle-mounted base station 2 and the test ring network is f2, so that the aim of configuration is to ensure that the field intensity measurement between the vehicle-mounted base station 2 and the test ring network is not interfered with each other due to conflict when the communication ring network and the vehicle-mounted base station are in wireless communication.
S5: the ground partition control unit judges whether the nth ground base station of the test ring network completes field intensity measurement according to the real-time position information of the high-speed maglev train, and if so, the next ground base station of the test ring network is opened, namely n is n +1, and the nth ground base station of the test ring network is closed at the same time.
S6: the ground partition control unit judges whether the high-speed maglev train is in the communication coverage range of the mth ground base station of the communication ring network according to the real-time position information of the high-speed maglev train, and if the high-speed maglev train is moved out of the communication coverage range of the mth ground base station of the communication ring network, the next ground base station of the communication ring network is opened, namely m is m +1, and the mth ground base station of the communication ring network is closed at the same time.
S7: and repeatedly executing the steps S2-S6 until the field strengths of all the ground base stations in the test ring network are measured.
S8: and the ground partition control unit modifies the communication ring network A into the test ring network A and modifies the test ring network B into the communication ring network B, and then the step S2-the step S7 are executed again.
Example 2
As shown in fig. 4, this embodiment provides a double-ring staggered high-speed magnetic levitation communication field strength testing system corresponding to the double-ring staggered high-speed magnetic levitation communication field strength testing method of embodiment 1, and the system includes two ground base station ring networks, a ground partition control unit, a vehicle base station 1, and a vehicle base station 2.
All base stations of the two ground base station ring networks are distributed in a horizontally staggered mode and connected to the ground partition control unit through an optical fiber network along the running track of the train, so that the ground partition control unit can communicate with the two ground base station ring networks; each ground base station ring network comprises M ground base stations; each ground base station looped network comprises two working modes, namely a normal communication mode or a field intensity test mode, and if the working mode of one ground base station looped network is the normal communication mode, the working mode of the other ground base station looped network is the field intensity test mode; the ground base station looped network in the normal communication mode is used as a communication looped network A, and the ground base station looped network in the passive field intensity test mode is used as a test looped network B.
Specifically, when the mth ground base station A of the communication ring network AmAfter receiving the real-time position information of the high-speed maglev train sent by the vehicle-mounted base station 1, the mth ground base station A of the communication ring network AmAnd transmitting the real-time position information of the high-speed maglev train to a ground partition control unit, wherein m is more than or equal to 1 and less than or equal to mu.
The ground partition control unit is used for opening an nth ground base station of the testing ring network based on the acquired real-time position information of the high-speed maglev train so as to enable the nth ground base station of the testing ring network to transmit a field intensity measuring signal to the vehicle-mounted base station 2, and after the nth ground base station of the testing ring network is opened by the ground partition control unit, field intensity test confirmation information is generated and sent to an mth base station of the communication ring network; wherein m is n.
And the ground partition control unit is also used for judging whether the high-speed maglev train is in the communication coverage range of the mth ground base station of the communication ring network according to the real-time position information of the high-speed maglev train, and if the high-speed maglev train is moved out of the communication coverage range of the mth ground base station of the communication ring network, the next ground base station of the communication ring network is opened, namely m is m +1, and the mth ground base station of the communication ring network is closed at the same time.
And the ground partition control unit is also used for judging whether the nth ground base station of the test ring network completes field intensity measurement according to the real-time position information of the high-speed magnetic levitation train, if so, the next ground base station of the test ring network is opened to transmit a field intensity measurement signal, namely n is n +1, and the nth ground base station of the test ring network is closed simultaneously.
The vehicle-mounted base station 1 is used for transmitting the real-time position information of the high-speed maglev train to the communication ring network when the high-speed maglev train starts to normally run; and after the ground partition control unit sends the field strength test confirmation information corresponding to the nth ground base station of the test ring network to the vehicle-mounted base station 1 through the mth ground base station of the communication ring network, sending a base station starting field strength test instruction to the vehicle-mounted base station 2.
And the vehicle-mounted base station 2 is used for measuring the field intensity measurement signal transmitted by the nth ground base station of the test ring network based on the field intensity test instruction.
The ground partition control unit is also used for setting one of the ground base station looped networks to be in a normal communication mode, and the other ground base station looped network to be in a field intensity test mode; and after testing the field intensity of all the ground base stations in one testing ring network, modifying the working mode of the communication ring network into a field intensity testing mode, modifying the working mode of the testing ring network into a normal communication mode, and continuously executing the steps of testing the field intensity correspondence of the ground base station ring network, the vehicle-mounted base station 1 and the vehicle-mounted base station 2.
Furthermore, the double-ring staggered high-speed magnetic-levitation communication field strength testing system also comprises a positioning sensor arranged on the high-speed magnetic-levitation train and used for capturing the real-time position information of the high-speed magnetic-levitation train in real time. Based on the real-time position information of the high-speed maglev train, the whole double-ring staggered high-speed maglev communication field strength test system can automatically complete field strength test.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A double-ring staggered high-speed magnetic levitation communication field strength test method is characterized by comprising a ground base station looped network A and a ground base station looped network B; all the ground base stations in the two ground base station ring networks are horizontally distributed in a staggered manner and are connected to a ground partition control unit through an optical fiber network along the running track of the high-speed maglev train, so that the ground partition control unit can communicate with the two ground base station ring networks; each ground base station looped network comprises M ground base stations, each ground base station looped network comprises two working modes, namely a normal communication mode or a field intensity test mode, and if the working mode of one ground base station looped network is the normal communication mode, the working mode of the other ground base station looped network is the field intensity test mode; taking the ground base station looped network in a normal communication mode as a communication looped network, and taking the ground base station looped network in a passive field intensity test mode as a test looped network;
the specific testing steps are as follows:
s1: the ground partition control unit sets one of the ground base station looped networks as a normal communication mode, and the other ground base station looped network as a field intensity test mode; the high-speed maglev train starts to normally run, and the vehicle-mounted base station 1 transmits real-time position information of the high-speed maglev train to the communication ring network;
s2: when the mth ground base station of the communication ring network receives the real-time position information of the high-speed maglev train, the mth ground base station of the communication ring network immediately sends the real-time position information of the high-speed maglev train to a ground partition control unit, wherein m is more than or equal to 1 and less than or equal to m;
s3: the ground partition control unit opens an nth ground base station of a test ring network based on the acquired real-time position information of the high-speed maglev train so that the nth ground base station of the test ring network transmits a field intensity measurement signal to a vehicle-mounted base station 2, wherein n is more than or equal to 1 and less than or equal to M; wherein m is n;
s4: the ground zone control unit can communicate with the vehicle-mounted base station 1 through a communication network which is connected with the vehicle-mounted base station 1, a communication ring network and the ground zone control unit; after the ground partition control unit opens the nth ground base station of the test ring network, the generated field strength test confirmation information is sent to the vehicle-mounted base station 1 through the mth ground base station of the communication ring network; after receiving the field strength test confirmation information corresponding to the nth ground base station of the test ring network sent by the ground partition control unit, the vehicle-mounted base station 1 sends a base station field strength test starting instruction to the vehicle-mounted base station 2, and the vehicle-mounted base station 2 measures a field strength measurement signal sent by the nth ground base station of the test ring network based on the field strength test instruction;
s5: the ground partition control unit judges whether the nth ground base station of the test ring network completes field intensity measurement according to the real-time position information of the high-speed maglev train, if so, the next ground base station of the test ring network is opened to transmit a field intensity measurement signal, namely n is n +1, and the nth ground base station of the test ring network is closed at the same time;
s6: the ground partition control unit judges whether the high-speed maglev train is in the communication coverage range of the mth ground base station of the communication ring network according to the real-time position information of the high-speed maglev train, if the high-speed maglev train is moved out of the communication coverage range of the mth ground base station of the communication ring network, the next ground base station of the communication ring network is opened, namely m is m +1, and the mth ground base station of the communication ring network is closed at the same time;
s7: repeating the steps S2-S6 until the field strengths of all ground base stations in the test ring network are measured;
s8: and modifying the working mode of the communication ring network into a field strength test mode, modifying the working mode of the test ring network into a normal communication mode, and executing the step S2-the step S7 again.
2. The method of claim 1, wherein the operating mode of the ground base station ring network is set by a ground partition control unit; specifically, the two ground base station ring networks refer to ring networks formed by serially connecting ground base stations through optical fiber networks along two sides of a train running track, and the two ground base station ring networks are connected to the ground partition control unit, so that the ground partition control unit can communicate with the two ground base station ring networks;
before the high-speed maglev train normally runs, the ground partition control unit sets the initial working modes of the two ground base station looped networks, and after the ground partition control unit judges that all ground base stations in the test looped networks finish the field intensity test, the working modes of the two ground base station looped networks are exchanged.
3. The method of claim 1, wherein the high speed maglev train is provided with a positioning sensor for capturing real time position information of the high speed maglev train in real time.
4. The method of claim 1, wherein all ground base stations of the two ground base station ring networks are distributed horizontally and alternately along the track of the high speed maglev train.
5. A double-ring staggered high-speed magnetic levitation communication field strength test system is characterized by comprising two ground base station ring networks, a ground partition control unit, a vehicle-mounted base station 1 and a vehicle-mounted base station 2;
all base stations of the two ground base station ring networks are distributed in a horizontally staggered mode and connected to a ground partition control unit through an optical fiber network along a train running track, so that the ground partition control unit can communicate with the two ground base station ring networks; each ground base station ring network comprises M ground base stations; each ground base station looped network comprises two working modes, namely a normal communication mode or a field intensity test mode, and if the working mode of one ground base station looped network is the normal communication mode, the working mode of the other ground base station looped network is the field intensity test mode; taking the ground base station looped network in a normal communication mode as a communication looped network, and taking the ground base station looped network in a passive field intensity test mode as a test looped network;
the communication ring network is used for sending the real-time position information of the high-speed maglev train to a ground partition control unit immediately by the mth ground base station of the communication ring network after the mth ground base station of the communication ring network receives the real-time position information of the high-speed maglev train, wherein m is more than or equal to 1 and less than or equal to m;
the ground partition control unit is used for opening an nth ground base station of a test ring network based on the acquired real-time position information of the high-speed maglev train so as to enable the nth ground base station of the test ring network to transmit a field intensity measurement signal to the vehicle-mounted base station 2, and after the nth ground base station of the test ring network is opened by the ground partition control unit, field intensity test confirmation information is generated and sent to an mth base station of the communication ring network; wherein m is n;
the ground partition control unit is further used for judging whether the high-speed maglev train is in the communication coverage range of the mth ground base station of the communication ring network according to the real-time position information of the high-speed maglev train, if the high-speed maglev train is moved out of the communication coverage range of the mth ground base station of the communication ring network, the next ground base station of the communication ring network is opened, namely m is m +1, and the mth ground base station of the communication ring network is closed at the same time;
the ground partition control unit is also used for judging whether the nth ground base station of the test ring network completes field intensity measurement according to the real-time position information of the high-speed magnetic suspension train, if so, the next ground base station of the test ring network is opened to transmit a field intensity measurement signal, namely n is n +1, and the nth ground base station of the test ring network is closed at the same time;
the vehicle-mounted base station 1 is used for transmitting the real-time position information of the high-speed maglev train to the communication ring network when the high-speed maglev train starts to normally run; after the ground partition control unit sends the field strength test confirmation information corresponding to the nth ground base station of the test ring network to the vehicle-mounted base station 1 through the mth ground base station of the communication ring network, a base station starting field strength test instruction is sent to the vehicle-mounted base station 2;
the vehicle-mounted base station 2 is used for measuring a field intensity measurement signal transmitted by the nth ground base station of the test ring network based on the field intensity test instruction;
the ground partition control unit is also used for setting one of the ground base station looped networks to be in a normal communication mode, and the other ground base station looped network to be in a field intensity test mode; and after testing the field intensity of all the ground base stations in one testing ring network, modifying the working mode of the communication ring network into a field intensity testing mode, modifying the working mode of the testing ring network into a normal communication mode, and continuously executing the steps of testing the field intensity correspondence of the ground base station ring network, the vehicle-mounted base station 1 and the vehicle-mounted base station 2.
6. The system of claim 5, further comprising a positioning device disposed on the track of the high-speed maglev train for capturing the real-time position information of the high-speed maglev train in real time by a positioning sensor on the high-speed maglev train.
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