CN110430532B - Automatic airport broadcasting system based on mobile terminal positioning - Google Patents
Automatic airport broadcasting system based on mobile terminal positioning Download PDFInfo
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- CN110430532B CN110430532B CN201910782396.2A CN201910782396A CN110430532B CN 110430532 B CN110430532 B CN 110430532B CN 201910782396 A CN201910782396 A CN 201910782396A CN 110430532 B CN110430532 B CN 110430532B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
- G01S11/06—Systems for determining distance or velocity not using reflection or reradiation using radio waves using intensity measurements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/59—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/61—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/023—Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/029—Location-based management or tracking services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
- H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
Abstract
The invention discloses an airport automatic broadcasting system based on mobile terminal positioning, which comprises: the system comprises a passenger mobile terminal, a staff special terminal, a broadcasting control server, an aerial display system, an emergency scheduling system and an airport broadcasting system; the passenger/staff mobile terminal carries out real-time positioning on passengers/staff through a WiFi positioning algorithm and uploads positioning information to a broadcast control server; the navigation display system is used for inputting and managing flight information in real time and uploading the flight information to the broadcast control server; the broadcast control server controls the airport broadcast system to broadcast according to the positioning information of passengers, flight information and airport emergency, and transmits the airport emergency to the emergency scheduling system; and the emergency scheduling system sends a scheduling instruction to the staff special terminal according to the positioning information of the staff and the airport emergency. The invention automatically broadcasts the fixed area in emergency by positioning airport personnel, thereby reducing the influence of global broadcasting and improving the broadcasting efficiency.
Description
Technical Field
The invention relates to an automatic airport broadcasting system based on mobile terminal positioning.
Background
In the existing airport terminal passenger management system, voice broadcast plays an important role in passenger service and real-time management. However, as the number of flights and passengers increases, if each flight is alerted by a broadcast, it can cause a lot of disturbing noise to the passengers in the terminal and interrupt their rest. The method provides personalized and cultural service for the passenger individuals, is also an important application requirement of the intelligent terminal building, and provides personalized automatic broadcasting application of information such as in-building guidance, flight reminding, emergency person finding and the like.
At present, a broadcasting system of an airport mainly adopts a manual broadcasting mode, and the broadcasting coverage range is the whole station. However, the broadcast of the actual airport is more frequent and the ranking of the importance of the events is more complicated, so that the events such as false report and missed report can be brought. Consequently, adopt traditional report mode to be difficult to reach accurate and efficient report work, only adopt reasonable automatic report mode more to be favorable to the wisdom construction and the efficiency improvement at airport.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an automatic airport broadcasting system based on mobile terminal positioning. The WiFi signals under the collected airport indoor environment are utilized to position personnel, and the regional broadcasting is carried out according to the positions of related personnel in the emergency needing to be broadcasted, so that purposeful and regional automatic broadcasting is realized, the noise of the broadcasting-free region is reduced, and the accurate broadcasting of the airport broadcasting is realized. The WiFi signals under the collected airport indoor environment are utilized to position personnel, and the regional broadcasting is carried out according to the positions of related personnel in the emergency needing to be broadcasted, so that purposeful and regional automatic broadcasting is realized, the noise of the broadcasting-free region is reduced, and the accurate broadcasting of the airport broadcasting is realized.
The invention adopts the following technical scheme for solving the technical problems:
the invention provides an airport automatic broadcasting system based on mobile terminal positioning, which comprises: the system comprises a passenger mobile terminal, a staff special terminal, a broadcasting control server, an aerial display system, an emergency scheduling system and an airport broadcasting system;
the passenger mobile terminal carries out real-time positioning on passengers through a WiFi positioning algorithm and uploads positioning information to the broadcast control server;
the staff special terminal carries out real-time positioning on the staff through a WiFi positioning algorithm and uploads positioning information to the broadcasting control server;
the navigation display system is used for inputting and managing flight information in real time and uploading the flight information to the broadcast control server;
the broadcast control server controls the airport broadcast system to broadcast according to the positioning information of passengers, flight information and airport emergency, and transmits the airport emergency to the emergency scheduling system;
and the emergency scheduling system sends a scheduling instruction to the staff special terminal according to the positioning information of the staff and the airport emergency.
As a further technical solution of the present invention, the WiFi positioning algorithm specifically comprises the following steps:
(1) off-line phase
The whole airport area is partitioned, WiFi information which can be received by a plurality of reference points is collected in each partition through a mobile terminal, the WiFi information comprises BSSID names of WiFi nodes and WiFi signal strength, and the WiFi information collected by each reference point is represented by strength vector [ RSSI ]1,RSSI2,…,RSSIS]In the form of a WiFi fingerprint database, wherein the RSSIiThe method comprises the steps that the collected WiFi signal strength value of the ith WiFi node is obtained, S is 1,2, …, S and S represent the number of WiFi nodes in the whole airport area, and if the WiFi information of a certain WiFi node is not collected at a certain reference point, the corresponding WiFi signal strength value is set to be zero;
(2) on-line phase
According to WiFi information collected by a passenger/staff mobile terminal held by a passenger/staff to be positioned, a KNN classification algorithm is used for predicting the position of the passenger/staff to be positioned:
1) selecting a partition corresponding to K minimum solution values according to the average value of the squared Euclidean distance, and taking the partition as an initial undetermined area:
wherein the RSSIiThe strength vector is acquired in real time by the ith time sequence; RSSIjIs the jth intensity vector in the WiFi fingerprint database; l isjIntensity vector and WiFi fingerprint collected in real time for ith time sequenceAn average of squared euclidean distances between jth intensity vectors in the database; n isjThe number of WiFi nodes representing that the ith time sequence can acquire WiFi information in real time is the same as that of WiFi nodes corresponding to the WiFi signal strength value which is not zero in the jth strength vector in the WiFi fingerprint database;
2) selecting the area with the largest number of the same areas in the initial area to be positioned as the final area to be positioned;
3) selecting WiFi nodes corresponding to three strongest WiFi signal strengths acquired in real time in the ith time sequence as matching points, and estimating the xy coordinate plane position of the passenger/staff according to the xy coordinate plane positions of the three matching points:
where P (x, y) is the estimated location of the passenger/employee, P (x)t,yt) Is as followstThe xy coordinate plane position of the matching point of each of the plurality of the matching points; RSSItThe collected WiFi signal strength value of the tth matching point is obtained.
4) And 3) adding a height value into the xy coordinate plane position of the passenger/staff obtained by calculation in the step 3) to obtain a three-dimensional coordinate, and completing the positioning of the passenger/staff.
As a further technical scheme of the invention, the height value is 0.8 m-1.5 m.
As a further technical scheme of the invention, the flight information comprises takeoff, landing and delay information of flights, and the flight information is sequenced according to a time sequence.
As a further technical solution of the present invention, the airport emergency situations include people finding, object finding, and medical information, which are sorted according to a time sequence, and the airport emergency situations at the same time are sorted according to an importance level.
As a further technical solution of the present invention, a method for controlling an airport broadcast by the broadcast control server is as follows:
(1) judging whether the emergency situations arriving at the same time are in the same grade, if not, sorting the emergency situations according to high-grade priority and putting the emergency situations into a broadcast queue;
(2) under the condition that the emergency situations are in the same grade, judging whether the broadcasting sites in the emergency situations have repeated same areas or not, and if the broadcasting areas are not repeated, putting the broadcasting sites into a broadcasting queue for simultaneous broadcasting; if the same area exists in the broadcasting area, the broadcasting area is randomly placed into a broadcasting queue for circular broadcasting.
As a further technical solution of the present invention, the broadcast is performed by selecting n broadcast broadcasts with the minimum distance loss as required, and the distance loss function is:
L＝d+αW+βv
wherein L is a loss function; d is the distance between the broadcast and the broadcast target; alpha is the number of the partition walls between the broadcast and the broadcast target; w is the loss distance caused by the single-sided wall; beta is the velocity loss coefficient; v is the broadcast target speed.
As a further technical scheme of the invention, the broadcast target speed v is obtained by calculation according to the positioning results of the two time sequences, and the moving direction pointing to the broadcast is negative, and the far broadcast is positive.
As a further technical scheme of the invention, the value of n is 2 to 5.
Compared with the prior art, the invention adopting the technical scheme has the following technical effects: the airport automatic broadcasting system based on mobile terminal positioning utilizes regional acquisition WiFi information to train, and carries out position calculation aiming at target personnel needing to be informed urgently to obtain the area where the target personnel is located, so that the area is broadcasted to be informed, and the aim of accurate notification is fulfilled. The system automatically positions and broadcasts, solves the problems of false alarm, missing report and the like to the great extent, and reduces the influence of the whole broadcast on other personnel.
Drawings
Fig. 1 is a schematic diagram of an airport automatic broadcast system based on mobile terminal positioning according to the present invention;
FIG. 2 is a schematic diagram of a mobile terminal positioning process of the present invention;
FIG. 3 is a schematic flow chart of the emergency sequencing mode of the present invention;
fig. 4 is a schematic diagram of a broadcast and WiFi node of the present invention.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the attached drawings:
as shown in fig. 1-2, the technical scheme adopted by the invention is as follows: an airport automatic broadcasting system based on mobile terminal positioning adopts the following technical scheme:
as shown in fig. 1, an airport automatic broadcasting system based on mobile terminal positioning is characterized by comprising: the system comprises a passenger mobile terminal positioning module, an aerial display system, a staff special terminal, a position-based broadcast control server, an emergency scheduling system, an airport broadcast system and a related facility management system, wherein the passenger mobile terminal positions passengers in real time through a WiFi positioning algorithm and uploads positioning information to the broadcast control server, and receives notification messages transmitted by the server; the aerial display system is used for inputting and managing a flight system; the staff special terminal is used for positioning and pushing the airport staff; the position-based broadcast control server is used for positioning passengers in emergency and transmitting tasks to an emergency scheduling system and an airport broadcast system; the emergency scheduling system is used for scheduling personnel and schemes in emergency; the airport broadcasting system is used for controlling broadcasting of an airport; the associated facility management system is for managing airport-related public hardware facilities.
The flight display system stores and manages all flight information of an airport, including information of takeoff, landing, delay and the like of flights, sorts the information according to time sequence, and provides the information for a server to process.
The emergency management system stores and manages all emergency situations of an airport, including information such as people finding, object finding, medical treatment and the like, if the emergency information occurs at the same time, the emergency information needs to be divided and sorted according to importance levels (emergency > emergency), and the sorted events are uploaded to a server.
The location-based broadcast control server mainly comprises an emergency message broadcast queue, wherein the emergency message broadcast queue comprises user locations and emergency situations, so that broadcast broadcasts close to users can be selected for broadcast notification through operation of the airport broadcast system.
The airport broadcasting system controls broadcasting and broadcasting of the whole airport, and broadcasting information and broadcasting positions can be selected and played.
According to the automatic airport broadcasting system based on mobile terminal positioning, a WiFi fingerprint positioning method is adopted in a WiFi positioning algorithm of the mobile terminal, and the WiFi fingerprint positioning method is shown in figure 2.
In the off-line stage, the whole airport area is partitioned, BSSID names and WiFi signal strength of existing WiFi nodes in the environment which can be received by a plurality of reference points are collected through the mobile terminal and stored in a WiFi fingerprint database for on-line stage prediction. Fingerprint information for each reference point may be a WiFi signal strength vector RSSI1,RSSI2,…,RSSIS]Is shown, wherein RSSIiThe collected WiFi signal strength value of the ith WiFi node is, S is 1,2, …, S represents the number of WiFi nodes in the whole airport area, and is uniquely identified by BSSID name. And if the WiFi information of a certain WiFi node is not collected by a certain reference point, setting the corresponding WiFi signal intensity value to zero.
During an online stage, according to WiFi information collected by a passenger/staff mobile terminal held by a passenger/staff to be positioned, the position of the passenger/staff to be positioned is predicted by using an improved KNN classification algorithm:
1) selecting a partition corresponding to K minimum solution values according to the average value of the squared Euclidean distance, and taking the partition as an initial undetermined area:
wherein the RSSIiThe strength vector is acquired in real time by the ith time sequence; RSSIjIs the jth intensity vector in the WiFi fingerprint database; l isjThe squared Euclidean distance between the intensity vector acquired in real time for the ith time sequence and the jth intensity vector in the WiFi fingerprint database(ii) an average value of the distances; n isjThe number of WiFi nodes representing that the ith time sequence can acquire WiFi information in real time is the same as that of WiFi nodes corresponding to the WiFi signal strength value which is not zero in the jth strength vector in the WiFi fingerprint database;
2) selecting the area with the largest number of the same areas in the initial area to be positioned as the final area to be positioned;
3) selecting WiFi nodes corresponding to three strongest WiFi signal strengths acquired in real time in the ith time sequence as matching points, and estimating the xy coordinate plane position of the passenger/staff according to the xy coordinate plane positions of the three matching points:
where P (x, y) is the estimated location of the passenger/employee, P (x)t,yt) Is as followstThe xy coordinate plane position of each matching point is basically fixed in height of the moving end, so that the elevation is ignored at first; RSSItAnd (3) the collected WiFi signal strength value of the tth matching point is weighted by taking the absolute value of the strength because the received strength value is a negative value and the larger the received strength value is, the stronger the signal strength is.
4) And 3) adding a height value z (generally, the z is 0.8-1.5 m) to the xy coordinate plane position of the passenger/staff obtained by calculation in the step 3), and then transmitting the three-dimensional coordinate to a server, so that a position label can be marked on the corresponding emergency.
Broadcast the broadcast and the distance of this urgent contact, use the european style distance:
wherein (x)k,yk,zk) The position of the kth broadcast is; (x)p,yp,zp) Is the position of the emergency contact。
The invention relates to an airport automatic broadcasting system based on mobile terminal positioning, wherein an emergency message broadcasting queue comprises user positions and emergency situations, wherein the emergency situations can be divided into very emergency, emergency and relatively emergency according to the emergency of an event and are defined by airport management, and the general flight information broadcasting can be defined as the emergency situations. If the emergency is uploaded to the server at the same time, the emergency can be sorted by the method shown in fig. 3.
The method is characterized by comprising the following steps:
(1) judging whether the emergency situations arriving at the same time are in the same grade, if not, sorting the emergency situations according to high-grade priority and putting the emergency situations into a broadcast queue;
(2) and judging whether the broadcast places in the emergency have the same repeated area or not under the condition that the emergency is at the same level. If the broadcast areas are not repeated, the broadcast areas can be put into a broadcast queue for simultaneous broadcast without waiting; if the same area exists in the broadcast area, the broadcast area can be randomly placed into a broadcast queue to carry out two-time broadcast at intervals, namely, each broadcast is switched to another emergency broadcast twice immediately until the emergency circulation under the condition is finished.
As shown in fig. 4, the selection of the broadcast is controlled by the distance loss function:
L＝d+αW+βv
wherein L is a loss function of the broadcast selection; d is the distance of the broadcast from the target; α is the number of spaced walls between the broadcast and the target; w is the loss distance caused by the single-sided wall, and is taken to be 3-6 m; beta is a speed loss coefficient, and is taken for 1-4 s; v is the target average speed, and is calculated by the positioning positions and the interval time of the two previous and next times, the direction is negative when the broadcast is pointed, and the direction is positive when the broadcast is far away.
And (3) selecting n (n is 2-5) broadcasts with the minimum distance loss, and controlling the broadcasts to carry out notification broadcasting by a notification broadcasting system, so that people needing to be notified can obtain information in time and do not interfere users in other areas.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can understand that the modifications or substitutions within the technical scope of the present invention are included in the scope of the present invention, and therefore, the scope of the present invention should be subject to the protection scope of the claims.
Claims (8)
1. The utility model provides an airport automatic broadcast system based on mobile terminal location which characterized in that includes: the system comprises a passenger mobile terminal, a staff special terminal, a broadcasting control server, an aerial display system, an emergency scheduling system and an airport broadcasting system;
the passenger mobile terminal carries out real-time positioning on passengers through a WiFi positioning algorithm and uploads positioning information to the broadcast control server;
the staff special terminal carries out real-time positioning on the staff through a WiFi positioning algorithm and uploads positioning information to the broadcasting control server;
the navigation display system is used for inputting and managing flight information in real time and uploading the flight information to the broadcast control server;
the broadcast control server controls the airport broadcast system to broadcast according to the positioning information of passengers, flight information and airport emergency, and transmits the airport emergency to the emergency scheduling system;
the emergency scheduling system sends a scheduling instruction to the staff special terminal according to the positioning information of the staff and the airport emergency;
broadcast control server selects the minimum n of distance loss to broadcast the broadcast and broadcasts, and the distance loss function is:
L＝d+αW+βv，
wherein L is a loss function; d is the distance between the broadcast and the broadcast target; alpha is the number of the partition walls between the broadcast and the broadcast target; w is the loss distance caused by the single-sided wall; beta is the velocity loss coefficient; v is the broadcast target speed.
2. The system according to claim 1, wherein the WiFi positioning algorithm comprises the following specific steps:
(1) off-line phase
The whole airport area is divided into regions each timeWiFi information which can be received by a plurality of reference points is collected in each subarea through a mobile terminal, the WiFi information comprises BSSID names of WiFi nodes and WiFi signal strength, and the WiFi information collected by each reference point is strength vector [ RSSI [ ]1,RSSI2,…,RSSIS]In the form of a WiFi fingerprint database, wherein the RSSIiThe method comprises the steps that the collected WiFi signal strength value of the ith WiFi node is 1,2, …, S and S, wherein the S represents the number of WiFi nodes in the whole airport area, and if the WiFi information of a certain WiFi node is not collected at a certain reference point, the corresponding WiFi signal strength value is set to be zero;
(2) on-line phase
According to WiFi information collected by a passenger/staff mobile terminal held by a passenger/staff to be positioned, a KNN classification algorithm is used for predicting the position of the passenger/staff to be positioned:
1) selecting a partition corresponding to K minimum solution values according to the average value of the squared Euclidean distance, and taking the partition as an initial undetermined area:
wherein the RSSIiThe strength vector is acquired in real time by the ith time sequence; RSSIjIs the jth intensity vector in the WiFi fingerprint database; l isjThe average value of the squared Euclidean distance between the intensity vector acquired in real time for the ith time sequence and the jth intensity vector in the WiFi fingerprint database; n isjThe number of WiFi nodes representing that the ith time sequence can acquire WiFi information in real time is the same as that of WiFi nodes corresponding to the WiFi signal strength value which is not zero in the jth strength vector in the WiFi fingerprint database;
2) selecting the area with the largest number of the same areas in the initial area to be positioned as the final area to be positioned;
3) selecting WiFi nodes corresponding to three strongest WiFi signal strengths acquired in real time in the ith time sequence as matching points, and estimating the xy coordinate plane position of the passenger/staff according to the xy coordinate plane positions of the three matching points:
where P (x, y) is the estimated location of the passenger/employee, P (x)t,yt) The xy coordinate plane position of the matching point of the t-th; RSSItThe collected WiFi signal strength value of the tth matching point is obtained;
4) and 3) adding a height value into the xy coordinate plane position of the passenger/staff obtained by calculation in the step 3) to obtain a three-dimensional coordinate, and completing the positioning of the passenger/staff.
3. The automatic airport broadcasting system based on mobile terminal positioning as claimed in claim 2, wherein the height value is 0.8 m-1.5 m.
4. The system of claim 1, wherein the flight information comprises takeoff, landing and delay information of flights, and the flight information is sorted according to a time sequence.
5. The system of claim 1, wherein the airport emergencies include people finding, object finding, and medical information, are sorted in time series, and the airport emergencies at the same time are sorted according to importance level.
6. The system of claim 5, wherein the method for controlling the broadcasting of the airport by the broadcasting control server comprises the following steps:
(1) judging whether the emergency situations arriving at the same time are in the same grade, if not, sorting the emergency situations according to high-grade priority and putting the emergency situations into a broadcast queue;
(2) under the condition that the emergency situations are in the same grade, judging whether the broadcasting sites in the emergency situations have repeated same areas or not, and if the broadcasting areas are not repeated, putting the broadcasting sites into a broadcasting queue for simultaneous broadcasting; if the same area exists in the broadcasting area, the broadcasting area is randomly placed into a broadcasting queue for circular broadcasting.
7. The automatic airport broadcasting system based on mobile terminal positioning as claimed in claim 6, wherein the broadcasting target speed v is calculated according to the positioning results of two time sequences, and the moving direction pointing to the broadcasting is negative and the far broadcasting is positive.
8. The system according to claim 6, wherein n has a value of 2 to 5.
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