CN103596206A - Static wireless signal quality pre-warning device, system and method - Google Patents
Static wireless signal quality pre-warning device, system and method Download PDFInfo
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Abstract
The invention discloses a static wireless signal quality pre-warning device, system and method. The system comprises a train, an antenna connected with vehicle-mounted wireless equipment of the train, a wireless access point and the signal quality pre-warning device. The signal quality pre-warning device carries out wireless communication with the antenna of the vehicle-mounted wireless equipment through the wireless access point and has access to a signal quality pre-warning program. When the signal quality pre-warning device detects that the quality of a wireless signal from the vehicle-mounted wireless equipment of the train is normal, the signal quality pre-warning device is shut off, and relative equipment is needless to be detected and maintained. When the device detects that the quality of the signal from the vehicle-mounted wireless equipment of the train is abnormal, the signal quality pre-warning device is started, and relative equipment which is detected to be abnormal is detected and maintained. The static wireless signal quality pre-warning device, system and method solve the technical problems that in the prior art, detection and maintenance of a wireless transmission device of a vehicle are in a periodical maintenance and detection stage, state maintenance cannot be achieved, and particularly, quality of signals cannot be detected and maintained.
Description
Technical field
The present invention relates to track traffic signal field, especially relate to static radio signal quality pre-alarming device, system and the method thereof of car-ground radio static data transmitting procedure in a kind of field of track traffic storehouse.
Background technology
In track traffic storehouse in car-ground radio static data transmission technique field, conventionally require after train rests in Nei Mou station track, storehouse, vehicle-mounted Large Volume Data is downloaded in storehouse in ground-based server.Meanwhile, while carrying out wirelessly transmitting data in train storehouse, its position is relatively fixing, docks to certain position and starts log-on data transformation task.And in field of track traffic storehouse in car-ground radio static data transmitting procedure, radio signal quality quality is one of important factor in order of data transmission bauds.Meanwhile, car-ground radio is transmitted to involved equipment and carry out the effective means that Inspection and maintenance is the wireless transmission stable operation of service truck ground.At present, for the maintenance and inspection work of car-ground radio transmitting device, rest on periodic maintenance detection-phase, i.e. plan is repaiied, and the state of cannot realizing is repaiied, and especially cannot safeguard for the detection of signal quality.
Train is in carrying out the process of car-ground radio static data transmission, the factor that affects radio signal quality has conventionally: the antenna looseness of wireless aps in external disturbance, mobile unit antenna looseness or damage, storehouse (Access Point, access point) or damage etc.The technological means that at present not yet occurs carrying out according to car-ground radio signal quality quality repair and maintenance, also finds no close technical scheme.
The existing maintenance and inspection work for car-ground radio transmitting device rests on periodic maintenance detection-phase, i.e. plan is repaiied, this present situation causes car-ground radio transmitting device being carried out in the process of repair and maintenance, cannot pinpoint the problems in time, there is very large uncertainty, often when going wrong, there is no Inspection and maintenance, and when Inspection and maintenance, do not pinpoint the problems again, thereby cause in storehouse wireless static data transmission procedure unstable, unreliable.Meanwhile, this maintenance service of prior art is without exception carried out and is made regular check on maintenance for the equipment not going wrong, and has that system equipment Inspection and maintenance cost is high, efficiency is low.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of static radio signal quality pre-alarming device, system and method thereof, the maintenance and inspection work for car-ground radio transmitting device that overcomes prior art existence rests on periodic maintenance detection-phase, i.e. plan is repaiied, the state of cannot realizing is repaiied, the technical problem that cannot safeguard for the detection of signal quality especially.
In order to realize foregoing invention object, the present invention specifically provides a kind of technic relization scheme of static radio signal quality pre-alarming device, a radio signal quality pre-alarming device, comprising: signal quality pre-alarm unit, space indicate memory cell, Back ground Information temporary data storage unit, loss value temporary data storage unit, Back ground Information history data store unit and loss value history data store unit.Described signal quality pre-alarm unit is connected with WAP (wireless access point).Described signal quality pre-alarm unit is connected with described loss value temporary data storage unit, Back ground Information history data store unit and loss value history data store unit respectively, described signal quality pre-alarm unit is also connected with described Back ground Information temporary data storage unit, or is connected with described Back ground Information temporary data storage unit by described space indicate memory cell.Comprise train number, Position Number, WAP (wireless access point) services set that described signal quality pre-alarm unit receives from train indicate basic information data and the loss value information data of numbering.The position of train and spatial information data described in described space indicate cell stores, described Back ground Information temporary data storage unit is stored the Back ground Information ephemeral data of described train, described loss value temporary data storage unit is stored the loss value ephemeral data of described train, the Back ground Information historical data that described train is stored in described Back ground Information history data store unit, the loss value historical data that described train is stored in described loss value history data store unit.Described signal quality pre-alarm unit sends radio signal quality pre-alarm signal according to described Back ground Information ephemeral data, loss value ephemeral data, Back ground Information historical data and loss value historical data.
Preferably, described Back ground Information temporary data storage unit is stored the Back ground Information ephemeral data that described train comprises train number TrainNo, Position Number PositionNo, WAP (wireless access point) services set sign numbering SSID, space numbering SpaceNo and the interim ξ of numbering of loss value record 1No.
Preferably, described loss value temporary data storage unit is stored the loss value ephemeral data that described train comprises loss value record interim numbering ξ 1No and loss value blotter ξ 1.
Preferably, described Back ground Information history data store unit is stored described train and is comprised that train number TrainNo, Position Number PositionNo, WAP (wireless access point) services set indicate numbering SSID, space numbering SpaceNo, history average μ, the described history average μ of wireless signal strength loss value ξ of the current present position of described train and the maximum value K of difference of the loss mean value of adjacent position, the current present position of described train and the Back ground Information historical data of loss value record number ξ No.
Preferably, the loss value historical data that described train comprises loss value record number ξ No and wireless signal strength loss value ξ is stored in described loss value history data store unit.
The present invention also specifically provides a kind of technic relization scheme of static radio signal quality pre-alarm system in addition, comprising: train, the antenna being connected with the in-vehicle wireless device of described train, WAP (wireless access point) and signal quality pre-alarming device.Described signal quality pre-alarming device is connected with described WAP (wireless access point), and described signal quality pre-alarming device carries out radio communication by the antenna of WAP (wireless access point) and described in-vehicle wireless device, and enters signal quality pre-alarm program.When described signal quality pre-alarming device detects radio signal quality from described train-installed wireless device when normal, shutdown signal Quality Forecasting is alert, without relevant device being detected and safeguarding.When described signal quality pre-alarming device detects radio signal quality from described train-installed wireless device when abnormal, enabling signal Quality Forecasting is alert, and detects and safeguard detecting abnormal relevant device.
Preferably, described signal quality pre-alarming device comprises signal quality pre-alarm unit, space indicate memory cell, Back ground Information temporary data storage unit, loss value temporary data storage unit, Back ground Information history data store unit and loss value history data store unit.Described signal quality pre-alarm unit is connected with described WAP (wireless access point).Described signal quality pre-alarm unit is connected with described loss value temporary data storage unit, Back ground Information history data store unit and loss value history data store unit respectively, described signal quality pre-alarm unit is also connected with described Back ground Information temporary data storage unit, or is connected with described Back ground Information temporary data storage unit by described space indicate memory cell.Described signal quality pre-alarm unit receives the train number that comprises from described train, Position Number, WAP (wireless access point) services set indicates numbering in interior basic information data and loss value information data, the position of train and spatial information data described in described space indicate cell stores, described Back ground Information temporary data storage unit is stored the Back ground Information ephemeral data of described train, described loss value temporary data storage unit is stored the loss value ephemeral data of described train, the Back ground Information historical data that described train is stored in described Back ground Information history data store unit, the loss value historical data that described train is stored in described loss value history data store unit.Described signal quality pre-alarm unit sends radio signal quality pre-alarm signal according to described Back ground Information ephemeral data, loss value ephemeral data, Back ground Information historical data and loss value historical data.
Preferably, when described train enters in storehouse wireless space, per interval t sends train number TrainNoi, Position Number PositionNoi, WAP (wireless access point) services set sign numbering SSIDi and wireless signal strength loss value ξ to described signal quality pre-alarm unit, the time cycle value of the in-vehicle wireless device detected wireless signals loss of intensity value ξ that t is described train.
Preferably, when the train described in certain row is when ad-hoc location, particular space are connected with the services set sign SSID of specific wireless access point, a record of described Back ground Information temporary data storage unit storage, corresponding described loss value temporary data storage unit storage comprises or two the above records of the interim numbering of loss value record ξ 1No, and finds this train all wireless signal strength loss value ξ when ad-hoc location, particular space and the services set of specific wireless access point indicate SSID and be connected by the interim numbering of described loss value record ξ 1No.
Preferably, train described in described loss value history data store unit record row is at ad-hoc location, all wireless signal strength loss value ξ when the services set of particular space and specific wireless access point indicates SSID and is connected, described Back ground Information history data store unit records the maximum value K of the difference of the history average μ of described wireless signal strength loss value ξ and the loss mean value of adjacent position, the current present position of described train simultaneously, this maximum value K is the maximum that allows loss mean variation in Gai space, the current present position of described train, exceed this maximum value K, described signal quality pre-alarming device enabling signal Quality Forecasting is alert.
Preferably, described space indicate cell stores has locational space flag information SpaceNo, is used for indicating in whole storehouse stopping and having the situation of described train in wireless space, if there be m position, have (1+m) m/2 space, there is a unique sign SpaceNo in each space.
Preferably, described signal quality pre-alarm unit, when receiving the wireless signal strength loss value ξ of described train transmission, is added into described wireless signal strength loss value ξ and loss value coding ξ Noi in described loss value temporary data storage unit at every turn.
Preferably, if had h to be listed as described train, carrying out the process of transfer of data before adding new record, owing to adding new record, setting up newly-increased connection, described wireless space changes, and h is before listed as the alert program of described train entering signal Quality Forecasting.
Preferably, when described train outbound, the in-vehicle wireless device of described train sends outbound instruction to described signal quality pre-alarming device by described antenna.
Preferably, the in-vehicle wireless device data of described train are downloaded to ground-based server by transmission of wireless signals mode, when described train complete and ground-based server between Wireless Data Transmission task time, described signal quality pre-alarming device enters into this signal quality pre-alarm program that is listed as described train.
Preferably, if before described train outbound, have n platform carrying out the train of Wireless Data Transmission, described signal quality pre-alarming device carries out the alert routine processes of Quality Forecasting for described n platform train before.
Preferably, described signal quality pre-alarming device is integrated in described ground-based server, or be one independently device.
The present invention also specifically provides and has utilized above-mentioned static radio signal quality pre-alarm system to realize the technic relization scheme of static radio signal quality pre-alarm method in addition, a kind of static radio signal quality pre-alarm method, static radio signal quality pre-alarm system comprises train, the antenna being connected with the in-vehicle wireless device of described train, WAP (wireless access point) and signal quality pre-alarming device, and the method comprises the following steps:
Described signal quality pre-alarming device carries out radio communication by the antenna of the in-vehicle wireless device of described WAP (wireless access point) and described train, and enters signal quality pre-alarm program;
When described signal quality pre-alarming device detects radio signal quality from described train-installed wireless device when normal, shutdown signal Quality Forecasting is alert, without relevant device being detected and safeguarding;
When described signal quality pre-alarming device detects radio signal quality from described train-installed wireless device when abnormal, enabling signal Quality Forecasting is alert, and detects and safeguard detecting abnormal relevant device.
Preferably, described signal quality pre-alarming device detects from the process of the radio signal quality of the in-vehicle wireless device of described train further comprising the steps:
S10: described signal quality pre-alarming device starts preparation, build space indicate storehouse SpaceNoDB, loss value temporary library TempDBInfo and loss value history library HistoryDBInfo, described loss value temporary library TempDBInfo further comprises Back ground Information temporary data set TempBaseInfo and loss value temporary data set TempDBData, and described loss value history library HistoryDBInfo further comprises Back ground Information history data set HistoryBaseInfo and loss value history data set HistoryDBData;
S11: when being numbered the described train of TrainNoi and entering in storehouse wireless space, per interval t sends train number TrainNoi, Position Number PositionNoi, WAP (wireless access point) services set sign numbering SSIDi and wireless signal strength loss value ξ to signal quality pre-alarm unit, the time cycle value of the in-vehicle wireless device detected wireless signals loss of intensity value that t is described train;
S12: described signal quality pre-alarm unit adds and records Fi in described Back ground Information temporary data set TempBaseInfo, train number TrainNoi, Position Number PositionNoi and WAP (wireless access point) services set sign numbering SSIDi are written in corresponding field, described signal quality pre-alarm unit generates new loss value coding ξ Noi, adds in loss value record number field ξ No;
S13: described signal quality pre-alarm unit, receive while being numbered the wireless signal strength loss value ξ that the described train of TrainNoi sends at every turn, is added into described wireless signal strength loss value ξ and described loss value coding ξ Noi in described loss value temporary data set TempDBData;
S14: when being numbered the described train of TrainNoi and completing Wireless Data Transmission, described signal quality pre-alarming device enters to the signal quality pre-alarm program of this train;
S15: when being numbered the described train outbound of TrainNoi, send outbound instruction to described signal quality pre-alarming device.
Preferably, described step S12 further comprises following process:
Described signal quality pre-alarming device is according to existing space indicate SpaceNo, obtain spatial aggregation { PositionNoi}, Position Number PositionNo is added into spatial aggregation { in PositionNoi}, form new spatial aggregation { PositionNoj}, and according to new spatial aggregation { PositionNoj}, from described space indicate storehouse SpaceNoDB, obtain new space indicate SpaceNoj, new space indicate SpaceNoj is added in the space numbering SpaceNo field that records Fi.
Preferably, described signal quality pre-alarm program is further comprising the steps:
S141: described signal quality pre-alarm unit obtains the sample data F1 of in-vehicle wireless device of the described train of blotter from described Back ground Information temporary data set TempBaseInfo, described sample data F1 comprises that train number TrainNo, Position Number PositionNo, WAP (wireless access point) services set indicate numbering SSID and space numbering SpaceNo;
S142: search the record that whether has described sample data F1 from described loss value history library HistoryDBInfo;
S143: if do not find the record of described sample data F1, enter step S1441; If find the record of described sample data F1, enter step S1442;
S1441: newly-increased described sample data F1 is recorded in described Back ground Information history data set HistoryBaseInfo, data in described loss value temporary data set TempDBData are added in described loss value history data set HistoryDBData simultaneously, calculate the history average μ of described wireless signal strength loss value ξ, and with the maximum value K of the difference of the loss mean value of adjacent position, position, the current present position of described train, upgrade μ value and K value in this record, EP (end of program);
S1442: obtain the interim numbering of loss value record ξ 1No by described sample data F1 in described Back ground Information temporary data set TempBaseInfo, according to the interim numbering of described loss value record ξ 1No, from described loss value temporary data set TempDBData, search all loss value blotter ξ 1, form loss value blotter set { ξ 1}, the mean value that calculates described loss value blotter ξ 1, is made as μ 1;
S145: according to described sample data F1, obtain μ value, K value and loss value record number value ξ No from described Back ground Information history data set HistoryBaseInfo, be made as respectively μ 0, K0 and ξ 0No;
S146: calculate | the absolute value of μ 1-μ 0|, is made as K1;
S147: judge whether K1 value is less than K0 value;
S1471: if K1 value is less than K0 value, think that wireless signal error is in allowed band, described signal quality pre-alarming device is without carrying out pre-alarm;
S148: if K1 value is greater than K0 value, described signal quality pre-alarming device carries out pre-alarm;
S149: described loss value history library HistoryDBInfo enters loss value history library renewal process.
Preferably, described loss value history library renewal process is further comprising the steps:
S1491: { ξ 1} is added in described loss value history data set HistoryDBData by the set of described loss value blotter, and it is ξ 0No that described loss value record number value ξ No is set, then deleted marker is the corresponding loss value data of ξ 1No from described loss value temporary data set TempDBData;
S1492: obtaining described loss value record number value ξ No from described loss value history data set HistoryDBData is all loss values formation set { ξ } of ξ 0No, the average value mu 0 of each element in set of computations { ξ }, upgrades μ value corresponding with described sample data F1 in described Back ground Information history data set HistoryBaseInfo;
S1493: the μ value of obtaining Position Number PositionNo adjacent position in all and described sample data F1 from described Back ground Information history data set HistoryBaseInfo, be made as μ i, calculate max(| μ-μ i|), acquisition allows the maximum value K departing from, and upgrades K value corresponding with the record of described sample data F1 in described Back ground Information history data set HistoryBaseInfo.
Preferably, if had h to be listed as described train, carrying out the process of transfer of data before adding new record, owing to adding new record, setting up newly-increased connection, described wireless space changes, and h is before listed as the alert program of described train entering signal Quality Forecasting.
Preferably, if before described train outbound, have n platform carrying out the train of Wireless Data Transmission, described signal quality pre-alarming device carries out the alert routine processes of Quality Forecasting for described n platform train before.
The technical scheme of a kind of static radio signal quality pre-alarming device, system and the method thereof providing by enforcement the invention described above, has following technique effect:
(1) the present invention can grasp the signal quality of car-ground radio transmission like clockwork, if signal quality pre-alarming device has been reported to the police, just can carry out Inspection and maintenance targetedly for this warning message, has greatly improved the efficiency of Inspection and maintenance;
(2) the present invention is for the good train of certain radio signal quality, signal quality pre-alarming device can not reported to the police, for the good equipment of signal, without detecting frequently maintenance, greatly reduce Inspection and maintenance cost, change plan in the past into state and repair.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the system architecture diagram of a kind of embodiment of static radio signal quality pre-alarm system provided by the invention;
Fig. 2 is the control signal flow graph 1 of a kind of embodiment of static radio signal quality pre-alarm system provided by the invention;
Fig. 3 is the control signal flow graph 2 of a kind of embodiment of static radio signal quality pre-alarm system provided by the invention;
Fig. 4 is the data structure schematic diagram of a kind of embodiment of static radio signal quality pre-alarm method provided by the invention;
Fig. 5 is the main program flow chart of a kind of embodiment of static radio signal quality pre-alarm method provided by the invention;
Fig. 6 is the program flow diagram of the signal quality pre-alarm process of a kind of embodiment of static radio signal quality pre-alarm method provided by the invention;
Fig. 7 is the program flow diagram of the loss value history library renewal process of a kind of embodiment of static radio signal quality pre-alarm method provided by the invention;
In figure: 100-train, 200-station track, 300-antenna, 400-WAP (wireless access point), 500-ground-based server, 1-signal quality pre-alarming device, 2-signal quality pre-alarm unit, 3-space indicate memory cell, 4-Back ground Information temporary data storage unit, 5-loss value temporary data storage unit, 6-Back ground Information history data store unit, 7-loss value history data store unit.
Embodiment
For quote and know for the purpose of, by the technical term hereinafter using, write a Chinese character in simplified form or abridge and be described below:
SSID:Service Set Identifier, the abbreviation of service set;
AP:Access Point, the abbreviation of access point;
DB: wireless signal strength.
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
If accompanying drawing 1 is to as shown in accompanying drawing 7, provided the specific embodiment of the static radio signal quality pre-alarm system of the present invention and method thereof, below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in accompanying drawing 2 and accompanying drawing 3, a specific embodiment for static radio signal quality pre-alarming device, signal quality pre-alarming device 1 comprises signal quality pre-alarm unit 2, space indicate memory cell 3, Back ground Information temporary data storage unit 4, loss value temporary data storage unit 5, Back ground Information history data store unit 6 and loss value history data store unit 7.Signal quality pre-alarm unit 2 is connected with WAP (wireless access point) 400.Signal quality pre-alarm unit 2 is connected with loss value temporary data storage unit 5, Back ground Information history data store unit 6 and loss value history data store unit 7 respectively, signal quality pre-alarm unit 2 is also connected with Back ground Information temporary data storage unit 4, or is connected with Back ground Information temporary data storage unit 4 by space indicate memory cell 3.The train number that comprises that signal quality pre-alarm unit 2 receives from train 100, Position Number, WAP (wireless access point) services set indicates numbering in interior basic information data and loss value information data, the position of space indicate memory cell 3 train car 100 and spatial information data, the Back ground Information ephemeral data of Back ground Information temporary data storage unit 4 train car 100, the loss value ephemeral data of loss value temporary data storage unit 5 train car 100, the Back ground Information historical data of Back ground Information history data store unit 6 train car 100, the loss value historical data of loss value history data store unit 7 train car 100.Signal quality pre-alarm unit 2 sends radio signal quality pre-alarm signal according to Back ground Information ephemeral data, loss value ephemeral data, Back ground Information historical data and loss value historical data.Signal quality pre-alarming device 1 or be integrated in ground-based server 500, or be a device independently.
As a kind of typical embodiment of the present invention, Back ground Information temporary data storage unit 4 train car 100 comprise that train number TrainNo, Position Number PositionNo, WAP (wireless access point) services set indicate the Back ground Information ephemeral data of numbering SSID, space numbering SpaceNo and the interim numbering of loss value record ξ 1No.Loss value temporary data storage unit 5 train car 100 comprise the loss value ephemeral data of loss value record interim numbering ξ 1No and loss value blotter ξ 1.Back ground Information history data store unit 6 train car 100 comprise train number TrainNo, Position Number PositionNo, WAP (wireless access point) services set indicates numbering SSID, space numbering SpaceNo, the DB(wireless signal strength of train 100 current present positions) the history average μ of loss value ξ, the maximum value K of the difference of the loss mean value of history average μ and adjacent position, the current present position of train 100 and loss value record number ξ No are in interior Back ground Information historical data, the position adjacent with the current present position of train 100 defines according to concrete applicable cases, as being adjacent one in the current station track 200 of living in of train 100, two, or three above station tracks, or the adjacent position of other types definition.Loss value history data store unit 7 train car 100 comprise the loss value historical data of loss value record number ξ No and wireless signal strength loss value ξ.
As shown in Figure 1, a kind of specific embodiment of static radio signal quality pre-alarm system, system comprises: train 100, the antenna 300, WAP (wireless access point) 400 and the signal quality pre-alarming device 1 that are connected with the in-vehicle wireless device of train 100.In the storehouse that train 100 is parked, comprise one or two above station tracks 200, train is parked in station track 200 and overhauls.Ground-based server 500 is connected with WAP (wireless access point) 400, when train 100, park to station track 200 certain position and start to start Wireless Data Transmission task, the in-vehicle wireless device of train 100 is downloaded to ground-based server 500 by antenna 300, WAP (wireless access point) 400 by data.Signal quality pre-alarming device 1 is also connected with WAP (wireless access point) 400, and signal quality pre-alarming device 1 carries out radio communication by WAP (wireless access point) 400 and the antenna 300 of in-vehicle wireless device, and enters signal quality pre-alarm program.When signal quality pre-alarming device 1 detects radio signal quality from train 100 in-vehicle wireless devices when normal, shutdown signal Quality Forecasting is alert, without relevant device being detected and safeguarding.When signal quality pre-alarming device 1 detects radio signal quality from the in-vehicle wireless device of train 100 when abnormal, enabling signal Quality Forecasting is alert, and detects and safeguard detecting abnormal relevant device.
As shown in accompanying drawing 2 and accompanying drawing 3, signal quality pre-alarming device 1 further comprises signal quality pre-alarm unit 2, space indicate memory cell 3, Back ground Information temporary data storage unit 4, loss value temporary data storage unit 5, Back ground Information history data store unit 6 and loss value history data store unit 7.Signal quality pre-alarm unit 2 is connected with WAP (wireless access point) 400.Signal quality pre-alarm unit 2 is connected with loss value temporary data storage unit 5, Back ground Information history data store unit 6 and loss value history data store unit 7 respectively, signal quality pre-alarm unit 2 is also connected with Back ground Information temporary data storage unit 4, or is connected with Back ground Information temporary data storage unit 4 by space indicate memory cell 3.The train number that comprises that signal quality pre-alarm unit 2 receives from train 100, Position Number, WAP (wireless access point) services set indicates numbering in interior basic information data and loss value information data, the position of space indicate memory cell 3 train car 100 and spatial information data, the Back ground Information ephemeral data of Back ground Information temporary data storage unit 4 train car 100, the loss value ephemeral data of loss value temporary data storage unit 5 train car 100, the Back ground Information historical data of Back ground Information history data store unit 6 train car 100, the loss value historical data of loss value history data store unit 7 train car 100, signal quality pre-alarm unit 2 is according to Back ground Information ephemeral data, loss value ephemeral data, Back ground Information historical data and loss value historical data are sent radio signal quality pre-alarm signal.
When train 100 enters in storehouse wireless space, per interval t sends train number TrainNoi, Position Number PositionNoi, WAP (wireless access point) services set sign numbering SSIDi and wireless signal strength loss value ξ to signal quality pre-alarm unit 2, and t is the time cycle value of the in-vehicle wireless device detected wireless signals loss of intensity value ξ of train 100.
When certain row train 100 is when ad-hoc location, particular space are connected with the services set sign SSID of specific wireless access point 400, a record of Back ground Information temporary data storage unit 4 storages, corresponding loss value temporary data storage unit 5 storages comprise or two the above records of the interim numbering of loss value record ξ 1No, and by loss value, records interim numbering ξ 1No and find this train 100 all wireless signal strength loss value ξ when ad-hoc location, particular space are connected with the services set sign SSID of specific wireless access point 400.
Loss value history data store unit 7 records certain row train 100 all wireless signal strength loss value ξ when ad-hoc location, particular space and the services set of specific wireless access point 400 indicate SSID and be connected.Back ground Information history data store unit 6 records the maximum value K of the difference of the history average μ of wireless signal strength loss value ξ and the loss mean value of adjacent position, the current present position of train simultaneously, this maximum value K is the maximum that allows loss mean variation in Gai space, the current present position of train 100, exceed this maximum value K, signal quality pre-alarming device 1 enabling signal Quality Forecasting is alert.
Space indicate memory cell 3 stores locational space flag information SpaceNo, which position is used for indicating in whole storehouse specifically has stop the situation that has train 100 in wireless space, if there be m position, be that locational space has Cm 1+Cm 2+Cm 3+Cm 4+Cm 5+ ... + Cm m space, have (1+m) m/2 space, there is a unique sign SpaceNo in each space.
Signal quality pre-alarm unit 2, when receiving the wireless signal strength loss value ξ of train 100 transmissions, is added into loss value ξ and loss value coding ξ Noi in loss value temporary data storage unit 5 at every turn.
If had h row train 100 carrying out the process of transfer of data before adding new record, owing to adding new record, set up newly-increased connection, wireless space changes, the alert program of h row train 100 entering signal Quality Forecastings before.
When train 100 outbound, the in-vehicle wireless device of train 100 sends outbound instruction to signal quality pre-alarming device 1 by antenna 300.
The in-vehicle wireless device data of train 100 are downloaded to ground-based server 500 by transmission of wireless signals mode, when train 100 complete and ground-based server 500 between Wireless Data Transmission task time, signal quality pre-alarming device 1 enters into the signal quality pre-alarm program of this row train 100.
If before train 100 outbounds, there is n platform carrying out the train 100 of Wireless Data Transmission, signal quality pre-alarming device 1 carries out the alert routine processes of Quality Forecasting for n platform train 100 before.
A kind ofly utilize above-mentioned static radio signal quality pre-alarm system to realize the specific embodiment of the method for static radio signal quality pre-alarm, static radio signal quality pre-alarm system comprises train 100, the antenna 300, WAP (wireless access point) 400 and the signal quality pre-alarming device 1 that are connected with the in-vehicle wireless device of train 100, and the method specifically comprises the following steps:
Signal quality pre-alarming device 1 carries out radio communication by WAP (wireless access point) 400 and the antenna 300 of the in-vehicle wireless device of train 100, and enters signal quality pre-alarm program;
When signal quality pre-alarming device 1 detects radio signal quality from train 100 in-vehicle wireless devices when normal, shutdown signal Quality Forecasting is alert, without relevant device being detected and safeguarding;
When signal quality pre-alarming device 1 detects radio signal quality from train 100 in-vehicle wireless devices when abnormal, enabling signal Quality Forecasting is alert, and detects and safeguard detecting abnormal relevant device.
As shown in Figure 5, signal quality pre-alarming device 1 detects from the process of the radio signal quality of the in-vehicle wireless device of train 100 further comprising the steps:
S10: signal quality pre-alarming device 1 starts preparation, builds space indicate storehouse SpaceNoDB, loss value temporary library TempDBInfo and loss value history library HistoryDBInfo; As shown in Figure 4, loss value temporary library TempDBInfo further comprises Back ground Information temporary data set TempBaseInfo:{TrainNo, PositionNo, SSID, SpaceNo, ξ 1No} and loss value temporary data set TempDBData:{ ξ 1No, ξ 1}, loss value history library HistoryDBInfo further comprises Back ground Information history data set HistoryBaseInfo:{TrainNo, PositionNo, SSID, SpaceNo, K, μ, ξ No} and loss value history data set HistoryDBData:{ ξ No, ξ };
Back ground Information temporary data set TempBaseInfo for current certain train 100 when ad-hoc location particular space and specific wireless access point services set indicate SSID and are connected, only has a record, corresponding loss value temporary data set TempDBData has many records, record interim numbering ξ 1No can find all loss value ξs 1 of certain train 100 when ad-hoc location particular space and specific wireless access point services set sign SSID are connected by loss value; Loss value history data set HistoryDBData has recorded all historical loss value data ξ of certain train 100 when ad-hoc location particular space and specific wireless access point services set indicate SSID and be connected; Back ground Information history data set HistoryBaseInfo has recorded the maximum value K of the difference of the history average μ of its loss value and the loss mean value of adjacent position, the current present position of train 100, this K value is the maximum that allows loss mean variation in Gai space, the current present position of train 100, exceeds this value and carries out pre-alarm;
S11: when being numbered the train 100 of TrainNoi and entering in storehouse wireless space, the services set sign numbering SSIDi of per interval t transmission train number TrainNoi, Position Number PositionNoi, WAP (wireless access point) 400 that train 100 connects and wireless signal strength loss value ξ are to signal quality pre-alarm unit 2, and t is the time cycle value of the in-vehicle wireless device detected wireless signals loss of intensity value of train 100;
S12: signal quality pre-alarm unit 2 adds and records Fi in Back ground Information temporary data set TempBaseInfo, train number TrainNoi, Position Number PositionNoi and WAP (wireless access point) services set sign numbering SSIDi are written in corresponding field, signal quality pre-alarm unit 2 generates new loss value coding ξ Noi, adds in loss value record number field ξ No;
S13: signal quality pre-alarm unit 2, receive while being numbered the wireless signal strength loss value ξ that the train 100 of TrainNoi sends at every turn, is added into wireless signal strength loss value ξ and loss value coding ξ Noi in loss value temporary data set TempDBData;
S14: when being numbered the train 100 of TrainNoi and completing Wireless Data Transmission, signal quality pre-alarming device 1 enters to the signal quality pre-alarm program of this train 100;
S15: when being numbered train 100 outbound of TrainNoi, send outbound instruction to signal quality pre-alarming device 1.
In step S10, locational space flag information SpaceNo, which position is used for indicating in whole storehouse specifically has stop the situation that has train 100 in wireless space, if there be m position, be that locational space has Cm 1+Cm 2+Cm 3+Cm 4+Cm 5+ ... + Cm m space, have (1+m) m/2 space, there is a unique sign SpaceNo in each space.In the stage that builds space indicate storehouse SpaceNoDB, signal quality pre-alarming device 1 is according to possible position, and { SpaceNoj, { PositionNoi}} forms space indicate storehouse SpaceNoDB to the set of span sign.
Step S12 further comprises following process:
Signal quality pre-alarming device 1 is according to existing space indicate SpaceNo, obtain spatial aggregation { PositionNoi}, Position Number PositionNo is added into spatial aggregation { in PositionNoi}, form new spatial aggregation { PositionNoj}, and according to new spatial aggregation { PositionNoj}, from the SpaceNoDB of space indicate storehouse, obtain new space indicate SpaceNoj, new space indicate SpaceNoj is added in the space numbering SpaceNo field that records Fi.
As shown in Figure 6, signal quality pre-alarm program is further comprising the steps:
S141: signal quality pre-alarm unit 2 obtains the sample data F1(TrainNo of in-vehicle wireless device of the train 100 of blotter from Back ground Information temporary data set TempBaseInfo, PositionNo, SSID, SpaceNo), sample data F1 comprises that train number TrainNo, Position Number PositionNo, WAP (wireless access point) services set indicate numbering SSID and space numbering SpaceNo;
S142: search and whether have sample data F1(TrainNo, PositionNo, SSID, SpaceNo from loss value history library HistoryDBInfo) record;
S143: if do not find the record of sample data F1, enter step S1441; If find the record of sample data F1, enter step S1442;
S1441: newly-increased sample data F1 is recorded in Back ground Information history data set HistoryBaseInfo, data in loss value temporary data set TempDBData are added in loss value history data set HistoryDBData simultaneously, calculate the history average μ of wireless signal strength loss value ξ, and with the maximum value K of the difference of the loss mean value of adjacent position, the current present position of train, upgrade μ value and K value in this record, EP (end of program);
S1442: pass through sample data F1(TrainNo in Back ground Information temporary data set TempBaseInfo, PositionNo, SSID, SpaceNo) obtain the interim numbering of loss value record ξ 1No, according to the interim numbering of loss value record ξ 1No, from loss value temporary data set TempDBData, search all loss value blotter ξ 1, form loss value blotter set { ξ 1}, the mean value of computed losses value blotter ξ 1, is made as μ 1;
S145: according to sample data F1, obtain μ value, K value and loss value record number value ξ No from Back ground Information history data set HistoryBaseInfo, be made as respectively μ 0, K0 and ξ 0No;
S146: calculate | the absolute value of μ 1-μ 0|, is made as K1;
S147: judge whether K1 value is less than K0 value;
S1471: if K1 value is less than K0 value, think that wireless signal error is in allowed band, signal quality pre-alarming device 1 is without carrying out pre-alarm;
S148: if K1 value is greater than K0 value, signal quality pre-alarming device 1 carries out pre-alarm;
S149: loss value history library HistoryDBInfo enters loss value history library renewal process.
As shown in Figure 7, loss value history library renewal process is further comprising the steps:
S1491: { ξ 1} is added in loss value history data set HistoryDBData by the set of loss value blotter, and it is ξ 0No that loss value record number value ξ No is set, then deleted marker is the corresponding loss value data of ξ 1No from loss value temporary data set TempDBData;
S1492: obtaining loss value record number value ξ No from loss value history data set HistoryDBData is all loss values formation set { ξ } of ξ 0No, the average value mu 0 of each element in set of computations { ξ }, upgrades the μ value corresponding with sample data F1 in Back ground Information history data set HistoryBaseInfo;
S1493: the μ value of obtaining Position Number PositionNo adjacent position in all and sample data F1 from Back ground Information history data set HistoryBaseInfo, be made as μ i, calculate max(| μ-μ i|), acquisition allows the maximum value K departing from, and upgrades the K value corresponding with the record of sample data F1 in Back ground Information history data set HistoryBaseInfo.
If there was the train 100 of h row carrying out the process of transfer of data before adding new record, owing to adding new record, set up newly-increased connection, wireless space changes, the alert program of h row train 100 entering signal Quality Forecastings before.
If before train 100 outbounds, there is n platform carrying out the train 100 of Wireless Data Transmission, signal quality pre-alarming device 1 carries out the alert routine processes of Quality Forecasting for n platform train 100 before.
As another exemplary embodiments of the present invention, in the specific embodiment of the invention described above, when building loss value temporary library TempDBInfo, Back ground Information temporary data set TempBaseInfo and loss value temporary data set TempDBData can be merged.Meanwhile, when building loss value history library HistoryDBInfo, Back ground Information history data set HistoryBaseInfo and loss value history data set HistoryDBData can be merged.
The technical scheme that the specific embodiment of the invention is described, can to radio signal quality, carry out Inspection and maintenance targetedly, therefore for car-ground radio, transmit the Inspection and maintenance of relevant device, by the technical scheme that adopts specific embodiment to describe, can grasp like clockwork the signal quality of car-ground radio transmission, if signal quality pre-alarming device has been reported to the police, just can carry out Inspection and maintenance targetedly for this warning message, greatly improve the efficiency of Inspection and maintenance.In signal quality pre-alarm process, no problem equipment need not frequently detect maintenance, and Inspection and maintenance is only for problematic equipment, greatly reduces Inspection and maintenance cost, has improved Inspection and maintenance efficiency.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
The above, be only preferred embodiment of the present invention, not the present invention done to any pro forma restriction.Although the present invention discloses as above with preferred embodiment, yet not in order to limit the present invention.Any those of ordinary skill in the art, in the situation that not departing from Spirit Essence of the present invention and technical scheme, all can utilize method and the technology contents of above-mentioned announcement to make many possible changes and modification to technical solution of the present invention, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not depart from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, be equal to replacements, equivalence changes and modify, all still belong in the scope that technical solution of the present invention protects.
Claims (24)
1. a static radio signal quality pre-alarming device, it is characterized in that: described signal quality pre-alarming device (1) comprises signal quality pre-alarm unit (2), space indicate memory cell (3), Back ground Information temporary data storage unit (4), loss value temporary data storage unit (5), Back ground Information history data store unit (6) and loss value history data store unit (7), described signal quality pre-alarm unit (2) is connected with WAP (wireless access point) (400), described signal quality pre-alarm unit (2) is connected with described loss value temporary data storage unit (5), Back ground Information history data store unit (6) and loss value history data store unit (7) respectively, described signal quality pre-alarm unit (2) is also connected with described Back ground Information temporary data storage unit (4), or is connected with described Back ground Information temporary data storage unit (4) by described space indicate memory cell (3), described signal quality pre-alarm unit (2) receives the train number that comprises from train (100), Position Number, WAP (wireless access point) services set indicates numbering in interior basic information data and loss value information data, described space indicate memory cell (3) is stored position and the spatial information data of described train (100), described Back ground Information temporary data storage unit (4) is stored the Back ground Information ephemeral data of described train (100), described loss value temporary data storage unit (5) is stored the loss value ephemeral data of described train (100), the Back ground Information historical data of described train (100) is stored in described Back ground Information history data store unit (6), the loss value historical data of described train (100) is stored in described loss value history data store unit (7), described signal quality pre-alarm unit (2) is according to described Back ground Information ephemeral data, loss value ephemeral data, Back ground Information historical data and loss value historical data are sent radio signal quality pre-alarm signal.
2. a kind of static radio signal quality pre-alarming device according to claim 1, is characterized in that: described Back ground Information temporary data storage unit (4) is stored described train (100) and comprised that train number TrainNo, Position Number PositionNo, WAP (wireless access point) services set indicate the Back ground Information ephemeral data of numbering SSID, space numbering SpaceNo and the interim numbering of loss value record ξ 1No.
3. a kind of static radio signal quality pre-alarming device according to claim 2, is characterized in that: described loss value temporary data storage unit (5) is stored the loss value ephemeral data that described train (100) comprises loss value record interim numbering ξ 1No and loss value blotter ξ 1.
4. according to a kind of static radio signal quality pre-alarming device described in claim 2 or 3, it is characterized in that: described Back ground Information history data store unit (6) is stored described train (100) and comprised train number TrainNo, Position Number PositionNo, WAP (wireless access point) services set indicates numbering SSID, space numbering SpaceNo, the history average μ of the wireless signal strength loss value ξ of the current present position of described train (100), the maximum value K of the difference of the loss mean value of described history average μ and adjacent position, the current present position of described train (100) and loss value record number ξ No are in interior Back ground Information historical data.
5. a kind of static radio signal quality pre-alarming device according to claim 4, is characterized in that: the loss value historical data that described train (100) comprises loss value record number ξ No and wireless signal strength loss value ξ is stored in described loss value history data store unit (7).
6. a static radio signal quality pre-alarm system, it is characterized in that: comprise train (100), the antenna (300), WAP (wireless access point) (400) and the signal quality pre-alarming device (1) that are connected with the in-vehicle wireless device of described train (100), described signal quality pre-alarming device (1) is connected with described WAP (wireless access point) (400), described signal quality pre-alarming device (1) carries out radio communication by WAP (wireless access point) (400) and the antenna (300) of described in-vehicle wireless device, and enters signal quality pre-alarm program; When described signal quality pre-alarming device (1) detects radio signal quality from described train (100) in-vehicle wireless device when normal, shutdown signal Quality Forecasting is alert, without relevant device being detected and safeguarding; When described signal quality pre-alarming device (1) detects radio signal quality from described train (100) in-vehicle wireless device when abnormal, enabling signal Quality Forecasting is alert, and detects and safeguard detecting abnormal relevant device.
7. a kind of static radio signal quality pre-alarm system according to claim 6, it is characterized in that: described signal quality pre-alarming device (1) comprises signal quality pre-alarm unit (2), space indicate memory cell (3), Back ground Information temporary data storage unit (4), loss value temporary data storage unit (5), Back ground Information history data store unit (6) and loss value history data store unit (7), described signal quality pre-alarm unit (2) is connected with described WAP (wireless access point) (400); Described signal quality pre-alarm unit (2) is connected with described loss value temporary data storage unit (5), Back ground Information history data store unit (6) and loss value history data store unit (7) respectively, described signal quality pre-alarm unit (2) is also connected with described Back ground Information temporary data storage unit (4), or is connected with described Back ground Information temporary data storage unit (4) by described space indicate memory cell (3); described signal quality pre-alarm unit (2) receives the train number that comprises from described train (100), Position Number, WAP (wireless access point) services set indicates numbering in interior basic information data and loss value information data, described space indicate memory cell (3) is stored position and the spatial information data of described train (100), described Back ground Information temporary data storage unit (4) is stored the Back ground Information ephemeral data of described train (100), described loss value temporary data storage unit (5) is stored the loss value ephemeral data of described train (100), the Back ground Information historical data of described train (100) is stored in described Back ground Information history data store unit (6), the loss value historical data of described train (100) is stored in described loss value history data store unit (7), described signal quality pre-alarm unit (2) is according to described Back ground Information ephemeral data, loss value ephemeral data, Back ground Information historical data and loss value historical data are sent radio signal quality pre-alarm signal.
8. a kind of static radio signal quality pre-alarm system according to claim 7, it is characterized in that: when described train (100) enters in storehouse wireless space, per interval t sends train number TrainNoi, Position Number PositionNoi, WAP (wireless access point) services set sign numbering SSIDi and wireless signal strength loss value ξ to described signal quality pre-alarm unit (2), and t is the time cycle value of the in-vehicle wireless device detected wireless signals loss of intensity value ξ of described train (100).
9. a kind of static radio signal quality pre-alarm system according to claim 8, it is characterized in that: when the train (100) described in certain row is at ad-hoc location, when particular space is connected with the services set sign numbering SSID of specific wireless access point (400), described Back ground Information temporary data storage unit (4) is stored a record, corresponding described loss value temporary data storage unit (5) storage comprises or two the above records of the interim numbering of loss value record ξ 1No, and find this train (100) at ad-hoc location by the interim numbering of described loss value record ξ 1No, all wireless signal strength loss value ξ when the services set of particular space and specific wireless access point (400) indicates SSID and is connected.
10. a kind of static radio signal quality pre-alarm system according to claim 9, it is characterized in that: described loss value history data store unit (7) records the described train (100) of certain row at ad-hoc location, all wireless signal strength loss value ξ when the services set of particular space and specific wireless access point (400) indicates SSID and is connected, described Back ground Information history data store unit (6) records the maximum value K of the difference of the history average μ of described wireless signal strength loss value ξ and the loss mean value of adjacent position, the current present position of described train (100) simultaneously, this maximum value K is the maximum that allows loss mean variation in Gai space, the current present position of described train (100), exceed this maximum value K, described signal quality pre-alarming device (1) enabling signal Quality Forecasting is alert.
11. according to a kind of static radio signal quality pre-alarm system described in arbitrary claim in claim 7,8,9,10, it is characterized in that: described space indicate memory cell (3) stores locational space flag information SpaceNo, be used for indicating in whole storehouse and in wireless space, stop the situation that has described train (100), if there be m position, have (1+m) m/2 space, there is a unique sign SpaceNo in each space.
12. a kind of static radio signal quality pre-alarm systems according to claim 11, it is characterized in that: described signal quality pre-alarm unit (2), when receiving the wireless signal strength loss value ξ of described train (100) transmission, is added into described wireless signal strength loss value ξ and loss value coding ξ Noi in described loss value temporary data storage unit (5) at every turn.
13. according to a kind of static radio signal quality pre-alarm system described in arbitrary claim in claim 6,7,8,9,10,12, it is characterized in that: if had h to be listed as described train (100), carrying out the process of transfer of data before adding new record, owing to adding new record, set up newly-increased connection, described wireless space changes, and h is before listed as the alert program of described train (100) entering signal Quality Forecasting.
14. a kind of static radio signal quality pre-alarm systems according to claim 13, it is characterized in that: when described train (100) outbound, the in-vehicle wireless device of described train (100) sends outbound instruction to described signal quality pre-alarming device (1) by described antenna (300).
15. according to a kind of static radio signal quality pre-alarm system described in arbitrary claim in claim 6,7,8,9,10,12,14, it is characterized in that: the in-vehicle wireless device data of described train (100) are downloaded to ground-based server (500) by transmission of wireless signals mode, when described train (100) complete and described ground-based server (500) between Wireless Data Transmission task time, described signal quality pre-alarming device (1) enters into this signal quality pre-alarm program that is listed as described train (100).
16. a kind of static radio signal quality pre-alarm systems according to claim 15, it is characterized in that: if before described train (100) outbound, have n platform carrying out the train (100) of Wireless Data Transmission, described signal quality pre-alarming device (1) carries out the alert routine processes of Quality Forecasting for described n platform train (100) before.
17. a kind of static radio signal quality pre-alarm systems according to claim 15, is characterized in that: described signal quality pre-alarming device (1) is integrated in described ground-based server (500), or be one independently device.
18. 1 kinds of static radio signal quality pre-alarm methods, static radio signal quality pre-alarm system comprises train (100), the antenna (300), WAP (wireless access point) (400) and the signal quality pre-alarming device (1) that are connected with the in-vehicle wireless device of described train (100), it is characterized in that, comprise the following steps:
Described signal quality pre-alarming device (1) carries out radio communication by described WAP (wireless access point) (400) and the antenna (300) of the in-vehicle wireless device of described train (100), and enters signal quality pre-alarm program;
When described signal quality pre-alarming device (1) detects radio signal quality from described train (100) in-vehicle wireless device when normal, shutdown signal Quality Forecasting is alert, without relevant device being detected and safeguarding;
When described signal quality pre-alarming device (1) detects radio signal quality from described train (100) in-vehicle wireless device when abnormal, enabling signal Quality Forecasting is alert, and detects and safeguard detecting abnormal relevant device.
19. a kind of static radio signal quality pre-alarm methods according to claim 18, it is characterized in that, described signal quality pre-alarming device (1) detects from the process of the radio signal quality of the in-vehicle wireless device of described train (100) further comprising the steps:
S10: described signal quality pre-alarming device (1) starts preparation, build space indicate storehouse SpaceNoDB, loss value temporary library TempDBInfo and loss value history library HistoryDBInfo, described loss value temporary library TempDBInfo further comprises Back ground Information temporary data set TempBaseInfo and loss value temporary data set TempDBData, and described loss value history library HistoryDBInfo further comprises Back ground Information history data set HistoryBaseInfo and loss value history data set HistoryDBData;
S11: when being numbered the described train (100) of TrainNoi and entering in storehouse wireless space, per interval t sends train number TrainNoi, Position Number PositionNoi, WAP (wireless access point) services set sign numbering SSIDi and wireless signal strength loss value ξ to signal quality pre-alarm unit (2), and t is the time cycle value of the in-vehicle wireless device detected wireless signals loss of intensity value of described train (100);
S12: described signal quality pre-alarm unit (2) adds and records Fi in described Back ground Information temporary data set TempBaseInfo, train number TrainNoi, Position Number PositionNoi and WAP (wireless access point) services set sign numbering SSIDi are written in corresponding field, described signal quality pre-alarm unit (2) generates new loss value coding ξ Noi, adds in loss value record number field ξ No;
S13: described signal quality pre-alarm unit (2), receive while being numbered the wireless signal strength loss value ξ that the described train (100) of TrainNoi sends at every turn, is added into described wireless signal strength loss value ξ and described loss value coding ξ Noi in described loss value temporary data set TempDBData;
S14: when being numbered the described train (100) of TrainNoi and completing Wireless Data Transmission, described signal quality pre-alarming device (1) enters to the signal quality pre-alarm program of this train (100);
S15: when being numbered described train (100) outbound of TrainNoi, send outbound instruction to described signal quality pre-alarming device (1).
20. a kind of static radio signal quality pre-alarm methods according to claim 19, is characterized in that, described step S12 further comprises following process:
Described signal quality pre-alarming device (1) is according to existing space indicate SpaceNo, obtain spatial aggregation { PositionNoi}, Position Number PositionNo is added into spatial aggregation { in PositionNoi}, form new spatial aggregation { PositionNoj}, and according to new spatial aggregation { PositionNoj}, from described space indicate storehouse SpaceNoDB, obtain new space indicate SpaceNoj, new space indicate SpaceNoj is added in the space numbering SpaceNo field that records Fi.
21. a kind of static radio signal quality pre-alarm methods according to claim 20, is characterized in that, described signal quality pre-alarm program is further comprising the steps:
S141: described signal quality pre-alarm unit (2) obtains the sample data F1 of in-vehicle wireless device of the described train (100) of blotter from described Back ground Information temporary data set TempBaseInfo, described sample data F1 comprises that train number TrainNo, Position Number PositionNo, WAP (wireless access point) services set indicate numbering SSID and space numbering SpaceNo;
S142: search the record that whether has described sample data F1 from described loss value history library HistoryDBInfo;
S143: if do not find the record of described sample data F1, enter step S1441; If find the record of described sample data F1, enter step S1442;
S1441: newly-increased described sample data F1 is recorded in described Back ground Information history data set HistoryBaseInfo, data in described loss value temporary data set TempDBData are added in described loss value history data set HistoryDBData simultaneously, calculate the history average μ of described wireless signal strength loss value ξ, and with the maximum value K of the difference of the loss mean value of adjacent position, the current present position of described train (100), upgrade μ value and K value in this record, EP (end of program);
S1442: obtain the interim numbering of loss value record ξ 1No by described sample data F1 in described Back ground Information temporary data set TempBaseInfo, according to the interim numbering of described loss value record ξ 1No, from described loss value temporary data set TempDBData, search all loss value blotter ξ 1, form loss value blotter set { ξ 1}, the mean value that calculates described loss value blotter ξ 1, is made as μ 1;
S145: according to described sample data F1, obtain μ value, K value and loss value record number value ξ No from described Back ground Information history data set HistoryBaseInfo, be made as respectively μ 0, K0 and ξ 0No;
S146: calculate | the absolute value of μ 1-μ 0|, is made as K1;
S147: judge whether K1 value is less than K0 value;
S1471: if K1 value is less than K0 value, think that wireless signal error is in allowed band, described signal quality pre-alarming device (1) is without carrying out pre-alarm;
S148: if K1 value is greater than K0 value, described signal quality pre-alarming device (1) carries out pre-alarm;
S149: described loss value history library HistoryDBInfo enters loss value history library renewal process.
22. a kind of static radio signal quality pre-alarm methods according to claim 21, is characterized in that, described loss value history library renewal process is further comprising the steps:
S1491: { ξ 1} is added in described loss value history data set HistoryDBData by the set of described loss value blotter, and it is ξ 0No that described loss value record number value ξ No is set, then deleted marker is the corresponding loss value data of ξ 1No from described loss value temporary data set TempDBData;
S1492: obtaining described loss value record number value ξ No from described loss value history data set HistoryDBData is all loss values formation set { ξ } of ξ 0No, the average value mu 0 of each element in set of computations { ξ }, upgrades μ value corresponding with described sample data F1 in described Back ground Information history data set HistoryBaseInfo;
S1493: the μ value of obtaining Position Number PositionNo adjacent position in all and described sample data F1 from described Back ground Information history data set HistoryBaseInfo, be made as μ i, calculate max(| μ-μ i|), acquisition allows the maximum value K departing from, and upgrades K value corresponding with the record of described sample data F1 in described Back ground Information history data set HistoryBaseInfo.
23. according to a kind of static radio signal quality pre-alarm method described in arbitrary claim in claim 18,19,20,21,22, it is characterized in that: if had h to be listed as described train (100), carrying out the process of transfer of data before adding new record, owing to adding new record, set up newly-increased connection, described wireless space changes, and h is before listed as the alert program of described train (100) entering signal Quality Forecasting.
24. a kind of static radio signal quality pre-alarm methods according to claim 23, it is characterized in that: if before described train (100) outbound, have n platform carrying out the train (100) of Wireless Data Transmission, described signal quality pre-alarming device (1) carries out the alert routine processes of Quality Forecasting for described n platform train (100) before.
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| CN115484561A (en) * | 2022-09-19 | 2022-12-16 | 重庆长安汽车股份有限公司 | Vehicle-mounted wireless network signal state reminding method and device, vehicle and medium |
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