CN112037469B - Track early warning system for monitoring special passengers on mail steamer - Google Patents
Track early warning system for monitoring special passengers on mail steamer Download PDFInfo
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- CN112037469B CN112037469B CN202010907409.7A CN202010907409A CN112037469B CN 112037469 B CN112037469 B CN 112037469B CN 202010907409 A CN202010907409 A CN 202010907409A CN 112037469 B CN112037469 B CN 112037469B
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
- G08B21/0272—System arrangements wherein the object is to detect exact location of child or item using triangulation other than GPS
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
- G08B21/0266—System arrangements wherein the object is to detect the exact distance between parent and child or surveyor and item
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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
Abstract
A track early warning system facing to monitoring of special passengers on a mail steamer is characterized in that intelligent wearable equipment is worn by a guardian and other passengers, and is embedded with a positioning label and early warning application; the portable wearable device is worn by a person under guardianship and is embedded with a positioning tag; the positioning base station transfers signals sent by the positioning labels in the radiation range to the positioning server, the positioning server calculates the positions of the positioning labels, and the positions of the positioning labels and the information of the wearers of the positioning labels are combined to generate position characteristic information of the positioning labels; the early warning strategy server receives the real-time position characteristic information of the positioning label sent by the positioning server, and calculates early warning triggering conditions for each ship passenger in real time by combining the set early warning strategy, and when the early warning triggering conditions of any ship passenger are met, an early warning instruction is sent to corresponding early warning application. The wearable equipment worn by the special passenger is utilized, so that the safety of the special passenger is ensured, the occurrence of dangerous accidents can be reduced, and the playing experience of the passenger is ensured.
Description
Technical Field
The invention belongs to a track early warning system, and particularly relates to a track early warning system for monitoring special passengers on a mail steamer.
Background
The cruise ship integrates leisure, sightseeing, logistics support, catering and shopping, entertainment facilities and commercial streets are staggered, the number of layers of the luxurious cruise ship can reach dozens of layers, the internal structure of the cruise ship is complex, the passenger flow line is staggered, and passengers form various forms.
In the cruise process, in the face of a complex internal environment, how to ensure the safety of the old and the children is a problem to be solved urgently: the old and children are easy to get away from their guardians, thereby causing the accidents that the old and children get lost; limited entertainment facilities in the cruise ship are available for children to experience, and many more dangerous entertainment or living facilities do not allow children to enter; when encountering a crowded stream of people, the stream of people easily disperses the old people or children and guardians thereof, resulting in the loss of the old people or children and the like.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the track early warning system for monitoring the special passengers on the mail steamer is provided, so that the occurrence of dangerous accidents of the special passengers is effectively reduced.
The technical scheme adopted by the invention for solving the technical problems is as follows: a kind of whereabouts early warning system facing the special passenger guardianship on the mail steamer guards, the passenger is divided into guardianship, person under guardianship, and other passenger that correspond to guardianship in the ship, this whereabouts early warning system includes:
the intelligent wearable equipment is worn by the guardian and other passengers, and is embedded with a positioning tag and early warning application;
the portable wearable equipment is worn by the person under guardianship and is embedded with a positioning tag;
the indoor positioning system comprises a positioning base station and a positioning server, wherein the positioning base station is used for forwarding a signal sent by a positioning label in a radiation range to the positioning server, the positioning server calculates the position of the positioning label, and the position of the positioning label and the information of a positioning label wearer are combined to generate position characteristic information of the positioning label;
the early warning strategy server is used for receiving the real-time position characteristic information of the positioning label sent by the positioning server, calculating early warning triggering conditions for each ship passenger in real time by combining a set early warning strategy, and sending an early warning instruction to corresponding early warning application when the early warning triggering conditions of any ship passenger are met;
the positioning tag is bound with the identity of the passenger in the ship wearing the positioning tag.
According to the scheme, the indoor positioning system is a UWB positioning system.
According to the scheme, a plurality of positioning base stations are provided, and information capable of distinguishing decks of the mail steamer in each layer is attached to the positioning base stations; and realizing two-dimensional positioning on each layer of deck plane by installing a plurality of positioning base stations, and establishing a two-dimensional coordinate system to calibrate the position information of each positioning label.
According to the scheme, the early warning application is loaded in the intelligent wearable device and is communicated with the early warning strategy server through a wifi hotspot of a local area network in the mail steamer.
According to the scheme, the wearable equipment of intelligence be intelligent bracelet, intelligent wrist-watch or have the chest card that shows the function.
According to the scheme, the early warning application comprises a setting module, a display module and an alarm module; the early warning system comprises a setting module, an early warning strategy server and a warning module, wherein the setting module is used for setting an early warning range and sending the early warning range to the early warning strategy server; the display module is used for receiving the real-time position characteristic information of the person under guardianship and the guardian, which is sent by the early warning strategy server; and the alarm module is used for receiving an alarm signal of the early warning strategy server and giving an alarm.
According to the scheme, the early warning range comprises a distance threshold, a virtual electronic fence area and a crowd degree grade threshold;
the early warning strategy comprises distance early warning, sensitive area early warning and crowd crowding degree early warning, and each person under guardianship is processed and judged in real time and in parallel;
the distance early warning means that when the distance between a guardian and a person under guardianship exceeds a certain distance threshold value, intelligent wearable equipment worn by the guardian receives a distance early warning instruction sent by an early warning strategy server;
the sensitive area early warning means that when a person under guardianship enters a certain mail steamer enclosed by the virtual electronic fence and the person under guardianship does not permit the person under guardianship to enter an area, intelligent wearable equipment worn by a guardian receives a sensitive area early warning instruction sent by an early warning strategy server;
the crowd crowding degree early warning means that when the crowd crowding degree grade of a person under guardianship in a certain area range exceeds a certain crowd crowding degree grade threshold value, the intelligent wearable device worn by the guardian receives a crowd crowding degree early warning instruction sent by the early warning strategy server.
According to the scheme, the real-time distance between the guardian and the person under guardianship is calculated according to the following method:
the positioning server obtains a plan view of each layer of the mail steamer, a two-dimensional coordinate A (x) of the guardian and the person under guardianship which are imported in advance1，y1)、B(x2，y2) The guardian and the person under guardianshipThe distance between them is recorded as D0(AB)；
If there is no obstruction at A, B, the real-time distance between the guardian and the person being monitored is expressed as: d0(AB)＝|AB|；
If there is a barrier between A, B, then find a substitute point P on the barrier surface1、P2Make AP1、P2B, no shielding object is arranged between the two parts, and the distance between the guardian and the person under guardianship through the shielding object is represented as follows:
DO(AB)＝(|AP1|+L0(P1P2)+|P2B|)
wherein: l is0(P1P2) Is a shade curve O1Two points of upper P1、P2The arc length is inferior.
If A, B there are multiple barriers, multiple substitute points are found on the barrier that must be passed through, A, B and multiple substitute points are connected in turn and the distances of each segment are accumulated.
According to the scheme, the crowd crowding degree grade is calculated according to the following method:
the number and the position of passengers on each layer in the mail steamer are obtained by the positioning server, the number of passengers including common passengers and special passengers on each layer is obtained through the positioning labels and the preset identity information, and the crowd crowding degree grade is calculated through the following steps:
the method comprises the following steps: recording adjacent areas of the person under guardianship as a set Q, and recording the adjacent areas as a set Q according to continuous time points1,Q2，…，Qn… }, each of which is QjThe j belongs to {1,2, …, n, … }, is a set value and moves along with the movement of the person under guardianship;
step two: real-time statistics of QjThe types and the number of passengers in the ship are recorded as the number Aj of ordinary passengers, the number Bj of old people and the number Cj of children;
step three: respectively adding corresponding weights to the old and the children: the weight lambda of the old and the weight beta of the child, and the peripheral area Q of the person under guardianship at the jth moment is calculatedjCrowdedness degree R (Q) of inner crowdj)：
R(Qj)＝Aj+λ*Bj+β*Cj j∈{1,2,…,n,…}
Wherein λ and β are both values between 0 and 1;
step four: according to the corresponding crowd crowding table, the peripheral area Q of the person under guardianship at the jth moment is obtainedjThe crowd crowding degree grade of the monitored person is triggered to give an early warning to the crowd crowding degree of the monitored person once the crowd crowding degree grade exceeds the crowd crowding degree grade threshold.
According to the scheme, the early warning application is also provided with a help seeking module for a guardian to seek help for a manager after receiving the warning signal.
The invention has the beneficial effects that: the wearable equipment worn by special passengers is utilized to ensure the safety of the special passengers and guardians thereof, so that the occurrence of dangerous accidents can be reduced, and the playing experience of the passengers is ensured.
Drawings
FIG. 1 is a block diagram of an embodiment of the present invention.
Fig. 2 is a logic framework diagram of a distance warning between a guardian and a person under guardianship in accordance with an embodiment of the present invention.
Fig. 3 is a diagram of a logic framework of a sensitive area early warning according to an embodiment of the present invention.
Fig. 4 is a logic framework diagram of crowd congestion warning according to an embodiment of the present invention.
FIG. 5 is a diagram of occupant location information in accordance with one embodiment of the present invention.
Detailed Description
The invention is further illustrated by the following specific examples and figures.
As shown in fig. 1, the invention provides a track early warning system for monitoring special passengers on a mail steamer, which divides the passengers in a ship into guardians, guardians corresponding to the guardians and other passengers, and comprises:
and the intelligent wearable equipment is worn by the guardian and other passengers, and is embedded with a positioning tag and early warning application. The intelligent wearable device worn by the guardian can be a bracelet, a watch or a chest card with a display function, is embedded with an early warning application program, and has the functions of displaying early warning information and reminding the guardian through modes such as flashing, chirping or vibrating.
The portable wearable equipment is worn by a person under guardianship and is embedded with a positioning tag. The portable wearable equipment worn by the guardianship is a light label which can not be detached by oneself, does not have a display function, and has a positioning basic function.
The location tag has a unique tag ID identifying its hardware, which contains a battery, a transmitting antenna and limited memory space, and can transmit UWB signals in real time. When boarding a ship, the location tag is tied to the identity of the ship occupant wearing it in the background.
The indoor positioning system comprises a positioning base station and a positioning server, wherein the positioning base station is used for forwarding signals sent by the positioning labels in the radiation range to the positioning server, the positioning server calculates the positions of the positioning labels, and the positions of the positioning labels and the information of the wearers of the positioning labels are combined to generate the position characteristic information of the positioning labels.
In this embodiment, the indoor positioning system is a UWB positioning system. A plurality of positioning base stations are attached with information capable of distinguishing decks of the mail steamer in each layer; and realizing two-dimensional positioning on each layer of deck plane by installing a plurality of positioning base stations, and establishing a two-dimensional coordinate system to calibrate the position information of each positioning label. The positioning server is interconnected with each UWB positioning base station, the positioning system calculates the position of the positioning label through the distance difference between the positioning label and the positioning base station in the range, the real-time position of the positioning label is recorded in the positioning server, and the passenger identity corresponding to the positioning label is further related. Meanwhile, the positioning server processes the position information of the wearer, calculates the real-time distance between the guardian and the person under guardianship, the area where the person under guardianship is located and the crowding degree grade of the area, and transmits the three types of calculated position characteristic information to the early warning strategy server in real time. The original UWB positioning signal sent by the positioning base station to the positioning server comprises the distance, the time stamp and the like between the positioning label and each peripheral positioning base station.
And the early warning strategy server is used for receiving the real-time position characteristic information of the positioning label sent by the positioning server, calculating early warning triggering conditions for each ship passenger in real time by combining the set early warning strategy, and sending an early warning instruction to corresponding early warning application when the early warning triggering conditions of any ship passenger are met. The early warning application is loaded in the intelligent wearable device and is communicated with the early warning strategy server through a wifi hotspot of a local area network in the mail steamer.
Furthermore, the early warning application comprises a setting module, a display module and an alarm module; the early warning system comprises a setting module, an early warning strategy server and a warning module, wherein the setting module is used for setting an early warning range and sending the early warning range to the early warning strategy server; the display module is used for receiving the real-time position characteristic information of the person under guardianship and the guardian, which is sent by the early warning strategy server; and the alarm module is used for receiving an alarm signal of the early warning strategy server and giving an alarm.
The early warning range comprises a distance threshold, a virtual electronic fence area and a crowd crowding degree grade threshold; the early warning strategy comprises distance early warning, sensitive area early warning and crowd crowding degree early warning, and each person under guardianship is processed and judged in real time and in parallel.
As shown in fig. 2, the distance early warning means that when the distance between the guardian and the person under guardianship exceeds a certain distance threshold, the intelligent wearable device worn by the guardian receives a distance early warning instruction sent by the early warning policy server.
As shown in fig. 3, the sensitive area early warning means that when a person under guardianship enters some mail ships enclosed by the virtual electronic fence and the person under guardianship does not permit the person under guardianship to enter an area, the intelligent wearable device worn by the guardian receives a sensitive area early warning instruction sent by the early warning policy server.
As shown in fig. 4, the crowd congestion degree early warning means that when the crowd congestion degree level in a certain area range of the monitored person exceeds a certain crowd congestion degree level threshold, the intelligent wearable device worn by the monitor receives the crowd congestion degree early warning instruction sent by the early warning policy server.
The real-time distance between the guardian and the person under guardianship is calculated according to the following method:
the positioning server obtains a plan view of each layer of the mail steamer, a two-dimensional coordinate A (x) of the guardian and the person under guardianship which are imported in advance1，y1)、B(x2，y2) Recording the distance between the guardian and the person under guardianship as D0(AB)；
If there is no obstruction at A, B, the real-time distance between the guardian and the person being monitored is expressed as: d0(AB)＝|AB|；
If there is a barrier between A, B, then find a substitute point P on the barrier surface1、P2Make AP1、P2B, no shielding object is arranged between the two parts, and the distance between the guardian and the person under guardianship through the shielding object is represented as follows:
DO(AB)＝(|AP1|+L0(P1P2)+|P2B|)
wherein: l is0(P1P2) Is a shade curve O1Two points of upper P1、P2The arc length is inferior.
If A, B there are multiple barriers, multiple substitute points are found on the barrier that must be passed through, A, B and multiple substitute points are connected in turn and the distances of each segment are accumulated.
The crowd crowding degree grade is calculated according to the following method:
the number and the position of passengers on each layer in the mail steamer are obtained by the positioning server, the number of passengers including common passengers and special passengers on each layer is obtained through the positioning labels and the preset identity information, and the crowd crowding degree grade is calculated through the following steps:
the method comprises the following steps: recording adjacent areas of the person under guardianship as a set Q, and recording the adjacent areas as a set Q according to continuous time points1,Q2，…，Qn… }, each of which is QjThe j belongs to {1,2, …, n, … } and is a set value, generally a circular area with a certain radius around the person under guardianship, and moves along with the movement of the person under guardianship.
Step two: real-time statistics of QjThe type and number of passengers in the ship are recordedThe number of ordinary passengers Aj, the number of old people Bj and the number of children Cj;
step three: respectively adding corresponding weights to the old and the children: the weight lambda of the old and the weight beta of the child, and the peripheral area Q of the person under guardianship at the jth moment is calculatedjCrowdedness degree R (Q) of inner crowdj)：
R(Qj)＝Aj+λ*Bj+β*Cj j∈{1,2,…,n,…}
Where λ and β are both values between 0 and 1.
Step four: according to the corresponding crowd crowding table, the peripheral area Q of the person under guardianship at the jth moment is obtainedjThe crowd crowding degree grade of the monitored person is triggered to give an early warning to the crowd crowding degree of the monitored person once the crowd crowding degree grade exceeds the crowd crowding degree grade threshold.
Preferably, the early warning application is further provided with a help seeking module for a guardian to seek help to a manager after receiving the alarm signal.
System-based data entry and registration, comprising: the method comprises the following steps of correspondingly inputting the identity of a wearer and the ID of a label, inputting the ship-wide map information of the whole ship, the authorization relationship between a guardian and a person under guardianship, a guardianship strategy and parameters of the guardian; wherein the content of the first and second substances,
the correspondence and the entry of the wearer identity and the tag ID mean that the positioning tag embedded in the wearable device is bound with the identity information of each passenger on the mail steamer, and the entry of the part of information needs to be provided with a corresponding auditing mechanism.
The ship-wide in-ship map information comprises the information of the decks of the cruise ships on each layer, the plan view of various facility areas of the cruise ships on each layer and the layout view of the positioning base stations of the cruise ships on each layer.
The authorization relationship between the guardian and the monitored person means that the intelligent wearable device worn by the guardian and the portable wearable device worn by the specified monitored person are bound together, and devices which do not establish the monitoring/monitored relationship are independent. When the portable wearable device triggers the early warning, the intelligent wearable device which establishes the monitoring/monitored relation with the portable wearable device receives the related early warning instruction sent by the early warning strategy server.
The monitoring strategy and the parameter input thereof are that distance threshold values between a guardian and a person under guardianship, sensitive area electronic fence authority and crowd congestion degree threshold value input systems are set in different places of a mail steamer, and when the distance threshold values exceed a specific threshold value or the person under guardianship enters a sensitive area, the early warning strategy system can send out corresponding early warning and trigger prompts (such as flashing, chirping or vibrating) on intelligent wearable equipment. When the crowd crowding degree grade is calculated, because the space occupied by the person under guardianship and the common passenger is different, the space proportion occupied by the common passenger is set to be 1, the weight of the space occupied by the old is lambda, the weight of the space occupied by the child is beta, and the parameter is recorded. For example, λ may be set to 0.7 and β may be set to 0.3 in the present embodiment.
In the system basic data input and registration, the correspondence and input of the identity and the label ID of a wearer and the input of the ship-wide image information are input into a positioning server for calculating the position characteristic information of the wearer; the authorization relationship between the guardian and the person under guardianship, the guardianship strategy and the parameters thereof are input into the early warning strategy server for judging the three early warning constraint conditions and realizing the early warning mode.
The track early warning method realized by the track early warning system facing the monitoring of the special passengers on the mail steamer comprises the following steps:
the method comprises the following steps: and arranging UWB positioning base stations in the mail steamer positioning early warning area, adjusting the directions and the number of the positioning base stations, setting server parameters and early warning thresholds, establishing corresponding area access permission, and enabling the track early warning system to be in an initial state.
Step two: the common passengers wear intelligent wearable devices (M), the special passengers wear portable wearable devices (P), and the wearing conditions of the portable wearable devices of all the passengers are checked before entering a public place.
Step three: the positioning server calculates the position information of the wearer through the distance difference between the positioning label and the positioning base station in the range of the positioning label, wherein the position information comprises the real-time distance between a guardian and a person under guardianship, the crowd degree grade of the area where the person under guardianship is located and the crowd degree grade of the area and the surrounding area, and sends real-time data to the early warning strategy server, and the early warning strategy server determines whether to send an early warning instruction or not by comparing the real-time data with an early warning threshold value: when the safety threshold value is within, the early warning system is in a safe state; when the early warning threshold value is exceeded or a person under guardianship enters a sensitive area, the early warning strategy server sends a corresponding early warning instruction to the intelligent wearable device (M) which establishes a monitoring/monitored relation with the portable wearable device through a wifi hotspot of an in-ship local area network.
Step four: after receiving the corresponding early warning instruction, the intelligent wearable device displays the corresponding early warning information and triggers a prompt (such as flashing, sounding or vibrating), and after checking the early warning information, a guardian confirms that the early warning instruction is received or seeks help for a manager by clicking an alarm function in the intelligent wearable device, so that the early warning is finished.
As shown in fig. 2, fig. 3 and fig. 4, the three track early warning manners are implemented as follows:
the method comprises the following steps: in this embodiment, the safety distance threshold is set to be 5m, the crowd safety congestion degree level is level IV, and the admission authority of the corresponding area is established.
Step two: the common passengers wear intelligent wearable devices (M), the special passengers wear portable wearable devices (P), and all the passengers can carry the wearing conditions of the devices before entering public places. Two kinds of wearable equipment that inlay that guardian and old man or children wore and have the location label send the UWB signal, and this signal is accepted to the location basic station.
Step three: in this embodiment, the coordinates of the guardian, the elderly, or the children and the crowd characteristics of the area where the guardian, the elderly, or the children are located, which are obtained through the processing of the positioning server, are as follows:
| guardian coordinate/general occupant personNumber of | Old or children | |
| Two dimensional coordinates | A(10，8) | B(13，12) |
| Location crowd characteristics | 6 persons of ordinary passengers | 3 old people and 4 children |
And respectively calculating the real-time distance between the guardian and the old or the child and the crowding degree grade of the area where the old or the child is located.
And judging the position condition of the passenger according to the real-time coordinates of the guardian and the old or the child provided by the positioning server and the internal structure diagram of the cruise ship on the layer. In this embodiment, the corresponding positions of the guardian and the elderly or children are shown in fig. 5.
As can be seen, if there is a barrier between the guardian and the old or child A, B, a substitute point P needs to be found on the barrier surface1、P2Make AP1、P2B is not blocked by a shielding object, and the distance between the guardian and the old or the child passing through the shielding object can be expressed as follows:
DO(AB)＝(|AP1|+L0(P1P2)+|P2B|)
wherein: l is0(P1P2) Is a shade curve O1Two points of upper P1、P2The arc length is inferior.
In this example P1、P2Two points coincide, so L0(P1P2) Is 0, P is available from the location server1(P2) The coordinates of the points are (12, 9.5), and the distance D between the guardian and the old or the child passing through the shielding object can be obtained by substituting the coordinates into the algorithmO(AB) 5.19m or moreIn the embodiment, the safety distance threshold value is preset to be 5M, so that the early warning strategy server sends a distance early warning instruction to the intelligent wearable device (M) worn by the guardian through a wifi hotspot of the local area network in the ship.
And calculating the corresponding crowding degree grade according to the crowd characteristics of the region where the old or the children are located. In this embodiment, the area where the elderly or children are located is denoted as Q1And obtaining the crowd characteristics of the area, namely 6 persons of the ordinary passenger, 3 persons of the old and 4 persons of the child.
Because the occupied spaces of the old, children and common passengers are different, corresponding weights are respectively added to the old and children: the weight lambda occupied by the old people is equal to 0.7, the weight beta occupied by the children is equal to 0.3, A is equal to 6, B is equal to 3, C is equal to 4, and the algorithm is substituted to calculate the crowd degree R (Q) in the area1)：
R(Q1)＝6+0.7*3+0.3*4
Can obtain Q1Degree of crowd congestion R (Q) in a region1)＝9.3。
According to the corresponding crowd crowding degree grade table (preset value), Q is obtained1The crowd crowding degree grade of the area is V grade and is greater than the preset crowd safety crowding degree grade IV in the embodiment, so that the early warning strategy server sends the crowd crowding degree early warning instruction to the intelligent wearable device (M) worn by the guardian through a wifi hotspot of the local area network in the ship.
In this embodiment, the old or the child does not enter the sensitive area, so the warning policy server does not send the warning instruction of the sensitive area.
Step four: in this embodiment, after receiving two kinds of early warning instructions, intelligent wearable device (M) displays corresponding early warning information and triggers a prompt (such as flashing, whistling, or shaking), and after checking the early warning information, a guardian confirms that the early warning instruction is received or seeks help to a manager by clicking an alarm function in the intelligent wearable device (M), and the early warning is finished.
The above embodiments are only used for illustrating the design idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention accordingly, and the protection scope of the present invention is not limited to the above embodiments. Therefore, all equivalent changes and modifications made in accordance with the principles and concepts disclosed herein are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a whereabouts early warning system towards special passenger guardianship on passenger ship guardianship, the inboard passenger divide into guardian, the person under guardianship who corresponds with guardian and other passengers, its characterized in that: this trace early warning system includes:
the intelligent wearable equipment is worn by the guardian and other passengers, and is embedded with a positioning tag and early warning application;
the portable wearable equipment is worn by the person under guardianship and is embedded with a positioning tag;
the indoor positioning system comprises a positioning base station and a positioning server, wherein the positioning base station is used for forwarding a signal sent by a positioning label in a radiation range to the positioning server, the positioning server calculates the position of the positioning label, and the position of the positioning label and the information of a positioning label wearer are combined to generate position characteristic information of the positioning label;
the early warning strategy server is used for receiving the real-time position characteristic information of the positioning label sent by the positioning server, calculating early warning triggering conditions for each ship passenger in real time by combining a set early warning strategy, and sending an early warning instruction to corresponding early warning application when the early warning triggering conditions of any ship passenger are met;
the positioning tag is bound with the identity of a passenger in a ship wearing the positioning tag;
the early warning application comprises a setting module, a display module and an alarm module; the early warning system comprises a setting module, an early warning strategy server and a warning module, wherein the setting module is used for setting an early warning range and sending the early warning range to the early warning strategy server; the display module is used for receiving the real-time position characteristic information of the person under guardianship and the guardian, which is sent by the early warning strategy server; the alarm module is used for receiving an alarm signal of the early warning strategy server and giving an alarm;
the early warning range comprises a distance threshold, a virtual electronic fence area and a crowd crowding degree grade threshold;
the early warning strategy comprises distance early warning, sensitive area early warning and crowd crowding degree early warning, and each person under guardianship is processed and judged in real time and in parallel;
the distance early warning means that when the distance between a guardian and a person under guardianship exceeds a certain distance threshold value, intelligent wearable equipment worn by the guardian receives a distance early warning instruction sent by an early warning strategy server;
the sensitive area early warning means that when a person under guardianship enters a certain mail steamer enclosed by the virtual electronic fence and the person under guardianship does not permit the person under guardianship to enter an area, intelligent wearable equipment worn by a guardian receives a sensitive area early warning instruction sent by an early warning strategy server;
the crowd crowding degree early warning means that when the crowd crowding degree grade in a certain area range of a person under guardianship exceeds a certain crowd crowding degree grade threshold value, the intelligent wearable device worn by the guardian receives a crowd crowding degree early warning instruction sent by an early warning strategy server;
the real-time distance between the guardian and the person under guardianship is calculated according to the following method:
the positioning server obtains a plan view of each layer of the mail steamer, a two-dimensional coordinate A (x) of the guardian and the person under guardianship which are imported in advance1，y1)、B(x2，y2) Recording the distance between the guardian and the person under guardianship as D0(AB)；
If there is no obstruction at A, B, the real-time distance between the guardian and the person being monitored is expressed as: d0(AB)＝|AB|；
If there is a barrier between A, B, then find a substitute point P on the barrier surface1、P2Make AP1、P2B, no shielding object is arranged between the two parts, and the distance between the guardian and the person under guardianship through the shielding object is represented as follows:
DO(AB)＝(|AP1|+L0(P1P2)+|P2B|)
wherein: l is0(P1P2) Is a shade curve O1Two points of upper P1、P2The length of the arc is inferior;
if A, B there are multiple barriers, multiple substitute points are found on the barrier that must be passed through, A, B and multiple substitute points are connected in turn and the distances of each segment are accumulated.
2. The whereabouts warning system of claim 1, wherein: the indoor positioning system is a UWB positioning system.
3. The whereabouts warning system of claim 2, wherein: the positioning base stations are multiple and are attached with information capable of distinguishing decks of the mail steamer in each layer; and realizing two-dimensional positioning on each layer of deck plane by installing a plurality of positioning base stations, and establishing a two-dimensional coordinate system to calibrate the position information of each positioning label.
4. The whereabouts warning system of claim 1, wherein: the early warning application is loaded in the intelligent wearable device and is communicated with the early warning strategy server through a wifi hotspot of a local area network in the mail steamer.
5. The whereabouts warning system of claim 4, wherein: the wearable equipment of intelligence be intelligent bracelet, intelligent wrist-watch or have the chest card that shows the function.
6. The whereabouts warning system of claim 1, wherein: the crowd crowding degree grade is calculated according to the following method:
the number and the position of passengers on each layer in the mail steamer are obtained by the positioning server, the number of passengers including common passengers and special passengers on each layer is obtained through the positioning labels and the preset identity information, and the crowd crowding degree grade is calculated through the following steps:
the method comprises the following steps: recording adjacent areas of the person under guardianship as a set Q, and recording the adjacent areas as a set Q according to continuous time points1，Q2，...，Qn,., wherein each QjRepresents the peripheral area of the person under guardianship at the jth moment, j belongs to {1, 2., n. }, is a set value and moves along with the movement of the person under guardianship；
Step two: real-time statistics of QjThe types and the number of passengers in the ship are recorded as the number Aj of ordinary passengers, the number Bj of old people and the number Cj of children;
step three: respectively adding corresponding weights to the old and the children: the weight lambda of the old and the weight beta of the child, and the peripheral area Q of the person under guardianship at the jth moment is calculatedjCrowdedness degree R (Q) of inner crowdj)：
R(Qj)＝Aj+λ*Bj+β*Cj j∈{1，2，...，n，...}
Wherein λ and β are both values between 0 and 1;
step four: according to the corresponding crowd crowding table, the peripheral area Q of the person under guardianship at the jth moment is obtainedjThe crowd crowding degree grade of the monitored person is triggered to give an early warning to the crowd crowding degree of the monitored person once the crowd crowding degree grade exceeds the crowd crowding degree grade threshold.
7. The whereabouts warning system of claim 1, wherein: the early warning application is also provided with a help seeking module for a guardian to seek help for a manager after receiving the warning signal.
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