CN108305493A - The state of an illness processing path planing method of first-aid system - Google Patents

The state of an illness processing path planing method of first-aid system Download PDF

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CN108305493A
CN108305493A CN201711490082.2A CN201711490082A CN108305493A CN 108305493 A CN108305493 A CN 108305493A CN 201711490082 A CN201711490082 A CN 201711490082A CN 108305493 A CN108305493 A CN 108305493A
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section
path
time
road
immediate care
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不公告发明人
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Dongguan Equity Exchange Center
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Dongguan Equity Exchange Center
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    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/09Arrangements for giving variable traffic instructions
    • G08G1/0962Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0968Systems involving transmission of navigation instructions to the vehicle
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G01C21/34Route searching; Route guidance
    • G01C21/3453Special cost functions, i.e. other than distance or default speed limit of road segments
    • G01C21/3492Special cost functions, i.e. other than distance or default speed limit of road segments employing speed data or traffic data, e.g. real-time or historical
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00Administration; Management
    • G06Q10/04Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
    • G06Q10/047Optimisation of routes or paths, e.g. travelling salesman problem
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/10Services
    • G06Q50/26Government or public services
    • G06Q50/265Personal security, identity or safety

Abstract

The present invention is based on each section time on road model, the previous 60 days traffic datas of digging utilization, by P(x<=t0)=0.9 is calculated t by normal distribution computing module0, the time required to obtaining certain complete section of motor line.Specific to particular moment, specific road section, according to one month previous traffic data, the transit time in each section is estimated with statistical method, and then it obtains first-aid personnel and ambulance is driven to state of an illness spot again to the time at purpose immediate care station by taken path, in the case of extreme congestion, ambulance running time is still controllable, and is optimal.

Description

The state of an illness processing path planing method of first-aid system
Technical field
The present invention relates to first aid Path Planning Technique fields, more particularly to the state of an illness processing path planning side of first-aid system Method.
Background technology
Currently, requirement of the people to state of an illness emergency reaction speed is higher and higher, and city especially megapolis is as above Sea, the congestion of Pekinese inner city are extremely serious.Processing for the state of an illness, existing first-aid system are some districts in city mostly Multiple immediate care stations are set in domain(Hospital), when the state of an illness occurs, all it is to be responded apart from nearest rescue service station, goes to disease Dispose the state of an illness in feelings spot.And at the immediate care station of inner city to state of an illness spot and when returning, often half section It is congestion, path when previous pass and return by immediate care station to state of an illness spot, all by first aid people Member is personal quickly to obtain according to personal experience, since the experience of first-aid personnel is different and judges that level of decision-making differs, disease The treatment effeciency of feelings can substantially be influenced by the individual factor of first-aid personnel.It occur frequently that ambulance gets lodged in the situation of road, trip Time greatly improves the case where several times or even dozens of times, and great hidden danger is caused to the security of the lives and property of the common people.
Although also there is the strategy of some path clusterings recently, all it is static, does not often consider congestion, simply look up The nearest immediate care station of point occurs to the state of an illness, then finds out nearest immediate care station to shortest path between state of an illness generation point, by this Shortest path is set to final emergency tender planning driving path;Even if considering congestion, road conditions are simply also divided with congestion or not, and it is right Congestion road conditions are simplified, and provide unified vehicle pass-through speed, it is clear that not reasonable.
In addition point occurs from the state of an illness does not have the strategy of path clustering to the path purpose immediate care station, simply to return Back substitution it, actually starting point immediate care station and purpose immediate care station might not be same, and should be with patient fastest to doctor Institute namely purpose immediate care station are final goal.
Previous policy considerations not can be good at excavating previous traffic data, in the big city of traffic congestion normalization Inner city urgently improve this processing state of an illness mode.
I proposes a solution application No. is 2017111517284 application, the present invention to the program after It is continuous to optimize popularization.
Many chance phenomena can be described with normal distribution or approximate description, when observation is enough, great Liang Sui Machine phenomenon with normal distribution come describe can it is extraordinary embody phenomenon itself pests occurrence rule, make accurate prediction.
Normal distribution(Normal distribution)Also known as Gaussian Profile(Gaussian distribution), it is one It is a in all very important probability distribution in the fields such as mathematics, physics and engineering, have great shadow at statistical many aspects Ring power.If stochastic variable X one mathematic expectaion of obedience is μ, variance σ2Gaussian Profile, be denoted as
X∼N(μ,σ2),
Its probability density function is
The desired value μ of normal distribution determines that its position, standard deviation sigma determine the amplitude of distribution.Because its curve is bell-like, because This people is often referred to as bell curve again.
The a bit fabulous statistical property of normal distribution:
(1)Its density function is symmetrical about mean value,
(2)Its data high concentration is near mean μ, P(-σ<x-μ<σ)=68%, namely nearly 70% data distribution is in section(μ- σ, μ+σ).
Invention content
The object of the present invention is to provide a kind of path clustering strategies of the processing state of an illness on emergency tender, discover and use previous traffic Data provide the different road speed of different congested links, find out and point occurs from immediate care station to the state of an illness again to purpose The used time shortest respective paths at immediate care station ensure that first-aid patients reach purpose immediate care station within the shortest time, Patient is given first aid in time.
To achieve the above object, the present invention uses following technical scheme:
The state of an illness processing path planing method of first-aid system, including step:
(1)Obtain the geographical location information and temporal information of the state of an illness spot corresponding to distress signal;
(2)According to the geographical location information of the state of an illness spot, the immediate care station in predeterminable area is searched for, acquisition closes on urgency Rescue the geographical location information in service station;
(3)According to geographical data bank and the geographical location information of state of an illness spot and immediate care station, immediate care is found out It stands the be possible to pass of location to state of an illness spot:Path 1, path 2 ..., path n;
(4)Determine the section of each pass:Determine the specific section in path 1, the specific section ... in path 2, path n's Specific section;
(5)Determine time t used in every a road sectionij:Using time on road model, calculate be possible to pass often all the way Duan Suoyong times, tijIndicate that time used in the jth section of path i, i value ranges are 1 ..., n, j value ranges are 1 ..., m;
(6)Determine time T used in each path1, T2..., Tn:The sum of time used in each section of each path i is calculated and is: Ti=ti1+ti2+…+tim
(7)Take T1, T2..., TnMinimum value Ta, then the paths a are destination path, namely it is final planning driving path to choose the paths a, right The immediate care station answered is the immediate care station for providing rescue;
Emergency command system sends out instruction to corresponding immediate care station, and provides it out planning driving path a, corresponding first aid Service station executes instruction, and emergency tender can be in about T along path a tripsaEmergency place is reached in minute to sue and labour.
The geographical location information can be obtained from geographical data bank, and geographical data bank includes road latitude and longitude coordinates Information, road name, link length, building latitude and longitude coordinates, building title etc., the geographical data bank is according to existing geography Information is established.
According to the geographical location information of the state of an illness spot, the immediate care station in predeterminable area is searched for, is specifically included: Centered on the latitude and longitude coordinates of the state of an illness spot, the immediate care station in pre-set radius is searched for;According to the urgency searched Service station is rescued, determines the corresponding latitude and longitude coordinates in the immediate care station.
Each section of the pass is established rules really, is:Road name per a road section is single, and includes starting Point does not include terminal, and the last item section includes starting and terminal point.
Highway traffic data library, it is characterised in that:Including link name, the long road of road, vehicle each moment is on two-way Average speed.
The time on road model is to a certain time on road method for establishing model:
S01 determines time information:D points, a, b, c, d when e a month b day c, e is determined, time information is minimum timing list with minute Position;
S02 obtains the road section length s by geographical data bank;
D divides the motor vehicle average speed in the section when c during S03 is obtained first 60 days from highway traffic data library, obtains one group 60 Speed data;
The time required to S04 is obtained the complete section of motor line by t=s/v;
S05 takes μ=(t1+t2+t3+…+t60)/60;σ2=(t1 2 +t2 2+t3 2+…+t60 2)/ 60-μ2, remember the time X by section, X obey a mathematic expectaion be μ, standard variance σ2Normal distribution, be denoted as:
X∼N(μ,σ2),
μ, σ are substituted into the formula of probability density function by S06;
S07 determines t, specially:T is found out by normal distribution database or normal distribution computing module0So that P(x<=t0)= 0.9;t0As in c d points, the required time that the complete section of motor line is estimated.
60 speed datas, when 1 day respectively preceding, 2 days first, above-mentioned c on the preceding 3rd, 4,5 ... 60 d points on the road The motor vehicle average overall travel speed v of section1, v2..., v60
The motor vehicle average speed in the section can be obtained by the speed camera in the section described in the section Moment several vehicle running speeds, then take its average value.
The first-aid system, which is characterized in that including emergency command system, highway traffic data library, geographical data bank, just State distribution calculation module, normal distribution database, immediate care station;Emergency command system can call each database, normal state point Cloth computing module handles data with immediate care station and extraneous communication;Wherein normal distribution database can be by above-mentioned probability Density function and parameter μ, σ2, Probability p provides above-mentioned t0
Advantages of the present invention:
The present invention is based on each section time on road model, about 60 days previous 2 months traffic datas of digging utilization, specific to Particular moment, specific road section estimate the transit time in each section with statistical method according to 60 days previous traffic datas, And then it obtains first-aid personnel and ambulance is driven to state of an illness spot again to the time at purpose immediate care station, extremely by taken path In the case of congestion, ambulance running time is still controllable, and is optimal.
The present invention fully considers the congestion in each section, is excavated to the traffic data in each section, especially pays attention to profit in time With the newest transit time data of preceding a road section of calculating, being chosen at the time of section realizes Dynamic Programming.
The immediate care station that this algorithm determines rather than was simply gone out in the past with static state by the most short determination of dynamic vehicle line haul hour The vehicle time determines, ensure that the used time is most short, improves the efficiency of entire first-aid system.
In addition, the data that the present invention takes are few, so the acquisition communication and all very fast, the data processing of processing of data Mode is simple and efficient, and result feedback is exceedingly fast, and may be implemented instantaneously to handle and provide as a result, cost is extremely low, easy to spread.
Specific implementation mode
Embodiment 1:
Such as 120 emergency command system be connected within 23 seconds 6 minutes the state of an illness at 5 points in afternoon on March 4th, 2017 and report the Room 801 of Yan'an road 7 There is the burst of heart of patient disease, needs to be rescued immediately.
So emergency command system will be done as follows:
(1)The entitled the Yellow River mansion of building on Yan'an road 7 is transferred according to geographical data bank, latitude and longitude coordinates are(8 ° of east longitude, north 9 ° of latitude), obtain the geographical location information of state of an illness spot;
(2)With the Yellow River mansion(8 ° of east longitude, 9 ° of north latitude)Centered on, it is assumed that with 5 kilometers for predetermined search radius, in 5 kilometers of search Immediate care station, obtain the geographical location information and title that close on immediate care station:Pacify 1 immediate care station(10 ° of east longitude, 11 ° of north latitude), pacify 2 immediate care stations(12 ° of east longitude, 13 ° of north latitude);
(3)1 immediate care station of peace is easy to get by geographical data bank(10 ° of east longitude, 11 ° of north latitude)To the Yellow River mansion(8 ° of east longitude, north 9 ° of latitude)1 immediate care station of peace is arrived again(10 ° of east longitude, 11 ° of north latitude)There are 2 paths, specially path 1, path 2;
(4)It is similar find out 1 immediate care station of peace and arrive again to the Yellow River mansion pacify 2 immediate care stations and have 3 difference paths, specially Path 3, path 4, path 5;Pacifying 2 immediate care stations and arriving 1 immediate care station of peace again to the Yellow River mansion has 3 different paths, specifically For path 6, path 7, path 8;Pacifying 2 immediate care stations and arriving 2 immediate care stations of peace again to the Yellow River mansion has 4 different paths, tool Body is path 9, path 10, path 11, path 12;
(5) we illustrate how to determine the section in path by taking path 1 as an example:Path 1 is made of 3 sections:Yan'an 1 Road, 2 tunnel of Yan'an, 3 tunnel of Yan'an;It originates immediate care station and point occurs again through 3 tunnel of Yan'an through 1 section of Yan'an, 2 section of Yan'an to the state of an illness To purpose immediate care station, 1 tunnel of Yan'an includes starting point crossing, and 2 tunnel of Yan'an, 3 section of Yan'an include starting point crossing and terminal crossing, In this way on single direction all crossings all by calculation to and only let it pass primary;
Using time on road model, time t used in every a road section in path 1 is calculated1,1, t1,2, t1,3;
(6) with the changed time t in 1 tunnel of the 1st section Yan'an1,1For illustrate how to establish a certain time on road model, specific method For:
S01 was by 6 minutes when 5 points of 23 seconds 6 minutes determining time information 4 days 17 March in 2017 of afternoon 4 day March 2017 departure time; Also 6 points are rounded up for 23 seconds to obtain 6 points;
S02 obtains 1 tunnel length s=2 kilometer of section Yan'an by geographical data bank;
S03 is according to highway traffic data library, 66 pavement branch sections Yan'an, 1 tunnels when dividing i.e. September in 2017 3 days 17 when obtaining first 1 day 17 Motor vehicle average speed:6 divide four kinds of motor-driven vehicle going speed when obtaining September in 2017 3 days 17 by the speed camera on 1 tunnel of Yan'an Degree, respectively:30,22,18,26, take its average value(30+22+18+26)/ 4=24, so v1=24 kilometers/hour;Obtain preceding 2 The motor vehicle average overall travel speed V on 66 pavement branch sections Yan'an, 1 tunnels when dividing i.e. September in 2017 2 days 17 when days 172=25 kilometers/small When ... the motor vehicle average overall travel speed V on 6 pavement branch sections Yan'an, 1 tunnel when obtaining the preceding same day 17 on the 60th60=25 kilometers/hour
The first n days(1=<n<=60)6 divide v kilometers/hour of average overall travel speed when motor vehicle 17
Preceding V on the 1st1=24
Preceding V on the 2nd2=25
. .
. .
Preceding V on the 30th30=24
. .
. .
Preceding V on the 60th60=20.7
S04 obtains t by t=s/v1The driving of 6 extension set motor-cars has been gone 1 road of Yan'an and has been taken at=2/24 hour=5 minutes, i.e., first 1 day 17 Between, 6 divide t the time required to the complete 1 tunnel section of Yan'an of motor line at first 2 days 172=4.8 minutes, in this way, show that alert occurs preceding 3, 6 divide t the time required to complete 1 tunnel of Yan'an of motor line at 4,5 ... 60 days 173,t4,…,t60;
ti t1, t2, t3, t4, t5, … , t30, …, t 60
Time/minute 5,4.8,4.9,5.2,5.1 ..., 5 ..., 5.8
S05 is by μ=(t1+t2+t3+…+t60)/60=(5+4.8+4.9+ ...+5.8)/60=5,
σ2=(t1 2 +t2 2+t3 2+…+t60 2)/60-μ2=(52+4.82 +4.92+ …+5.82)/60-52=8.41,
It is X the time required to remembering complete 1 tunnel of Yan'an of motor line, it is μ=5, variance σ that X, which obeys a mathematic expectaion,2=8.41 normal state Distribution, i.e. X~N (5,8.41);
S06 substitutes into μ=5, σ=2.9
=, obtain specific the formula of probability density function;
S07 is by P(x<= t0)=0.9 seeks t0, specially
Make P(x<= t0)=0.9=
T is calculated by normal distribution computing module0=9 minutes, t0As 6 complete 1 road of Yan'an of motor line is divided to estimate at 17 Time, t1,1The accuracy rate of=9 minute estimated time is 90%, that is, motor vehicle is in the probability on complete 1 tunnel of Yan'an of 9 minutes experts It is 90%, or says that certainty is 90%.
t1,2,t1,3The same t of algorithm1,1, do not exist together and be only that initial time:
t1,1 6 divide when September in 2017 4 days 17,
T again1,1=9 minutes, so:
t1,2 15 divide when September in 2017 4 days 17,
T is calculated using above-mentioned time on road model1,2When, 15 divide when initial time information takes September in 2017 4 days 17, and then calculate Go out t1,2=5 minutes, then similar
t1,3 20 divide when September in 2017 4 days 17
T is calculated using above-mentioned time on road model1,3When, 20 divide when initial time information takes September in 2017 4 days 17, and then calculate Go out t1,3=7 minutes;
(7) by the changed time t in 1 tunnel of the 1st section Yan'an1,1=9 minutes, the changed time t in 2 tunnel of the 2nd section of Yan'an1,2=5 minutes, the 3rd section The changed time t in 3 tunnel of Yan'an1,3=7 minutes;
So transit time T in path 11=t1,1+t1,2+t1,3=9+5+7=21 minute, i.e. T1=21 minutes.
Because path 1 is made of 3 sections, and the used time that the probability per a road section is 0.9 is respectively 5 points within 9 minutes Within clock, within 7 minutes.
Similar, we can calculate path 2 ..., the transit time in path 12, T1, T2..., T12, as shown in the table:
Ti T1 , T2 , T3 , T4 , T5, T6, T7, T8, T9 , T10, T11, T12
Unit/minute 21,25,26,30,37,44,24,25,39,28,27,30
(8) T1=21 is minimum, therefore it is destination path to take path 1, and 1 immediate care station of peace is that starting immediate care station is also purpose Immediate care station.
Path 1 is final planning driving path, and corresponding each section is 1 tunnel of Yan'an, 2 tunnel of Yan'an, 3 tunnel of Yan'an.
Emergency command system sends out instruction to 1 immediate care station of peace, and provides detailed roadway to 1 immediate care station of peace Diameter 1 and suggest velocity information, 1 immediate care station of peace executes instruction, and ambulance can be arrived being connected to state of an illness signal in 21 minutes It is met patient via 1 tunnel of Yan'an, 2 tunnel of Yan'an arrival the Yellow River mansion by pacifying 1 immediate care station and is reached again by 3 tunnel of Yan'an and pacify 1 emergency clothing Business station, the first-aid station namely hospital sue and labour;Used time reliability per a road section is 90% or more.

Claims (10)

1. the state of an illness processing path planing method of first-aid system, which is characterized in that including step:
(1)Geographical location information and temporal information are obtained, that is, obtains the geographical location of the state of an illness spot corresponding to distress signal Information and temporal information;
(2)The geographical location information at immediate care station is obtained, i.e., according to the geographical location information of the state of an illness spot, search is pre- If the immediate care station in region, the geographical location information for closing on immediate care station is obtained;
(3)All possible paths are obtained, i.e., according to geographical data bank and the geographical position of state of an illness spot and immediate care station Confidence ceases, and finds out the be possible to pass that purpose immediate care station is arrived in starting immediate care station to state of an illness spot again:Road Diameter 1, path 2 ..., path n;
(4)It determines the specific section in each path, that is, determines the specific section in path 1, the specific section ... in path 2, path n Specific section;
(5)Determine each time on road tij, that is, time on road model is utilized, every a road section institute of be possible to pass is calculated With time, tijIndicate that time used in the jth section of path i, i value ranges are 1 ..., n, j value ranges are 1 ..., m;
(6)Determine each path used time T1, T2..., Tn, i.e., it is by the sum of time calculating used in each section of each path i:Ti= ti1+ti2+…+tim
(7)Take T1, T2..., TnMinimum value TaTo get the paths destination path a, namely it is final planning driving path to choose the paths a, corresponding Immediate care station be the immediate care station that rescue is provided.
2. time on road model according to claim 1, to certain a road section, time on road method for establishing model is:
S01 determines time information:D points, a, b, c, d when e a month b day c, e is determined, time information is minimum timing list with minute Position;
S02 obtains the road section length s by geographical data bank;
D divides the motor vehicle average speed in the section when c during S03 is obtained first 60 days from highway traffic data library, obtains one group 60 Speed data;
The time required to S04 is obtained the complete section of motor line by t=s/v;
S05 takes μ=(t1+t2+t3+…+t60)/60;σ2=(t1 2 +t2 2+t3 2+…+t60 2)/ 60-μ2, remember the time X by section, X obey a mathematic expectaion be μ, standard variance σ2Normal distribution, be denoted as:
X∼N(μ,σ2),
μ, σ are substituted into the formula of probability density function by S06;
S07 determines t, specially:T is found out by normal distribution database or normal distribution computing module0So that P(x<=t0)= 0.9;t0As in c d points, the time required to the complete section of motor line.
3. state of an illness processing path planing method according to claim 1, which is characterized in that the geographical location information all may be used To be obtained from geographical data bank, geographical data bank includes road latitude and longitude coordinates information, road name, link length, building Latitude and longitude coordinates, building title etc., the geographical data bank is established according to existing geography information.
4. state of an illness processing path planing method according to claim 1, which is characterized in that according to the state of an illness spot Geographical location information is searched for the immediate care station in predeterminable area, is specifically included:With the latitude and longitude coordinates of the state of an illness spot Centered on, search for the immediate care station in pre-set radius;According to the immediate care station searched, the immediate care station pair is determined The latitude and longitude coordinates answered.
5. each section of pass according to claim 1 is established rules then really, it is characterised in that:Road per a road section Title is single, and includes starting point, does not include terminal, the last item section includes starting and terminal point.
6. the immediate care station according to claim 1 for providing rescue, it is characterised in that:Including starting immediate care station and Purpose immediate care station, and two may be different.
7. highway traffic data library according to claim 2, it is characterised in that:Including link name, the long road of road, per for the moment The vehicle average speed being engraved on two-way.
8. 60 speed datas according to claim 2, which is characterized in that 60 speed datas are respectively first 1 day, preceding 2 The d points of motor vehicle average overall travel speed v in section when day, above-mentioned c on the preceding 3rd, 4,5 ... 601, v2..., v60
9. the motor vehicle average speed in the section according to claim 2, which is characterized in that can be by the speed in the section Camera obtains the moment several vehicle running speeds in the section, then takes its average value.
10. first-aid system described in claim 1, which is characterized in that including emergency command system, highway traffic data library is geographical Database, normal distribution computing module, normal distribution database, immediate care station;Emergency command system can call each data Library, normal distribution computing module handle data with immediate care station and extraneous communication;Wherein normal distribution database can be with By above-mentioned probability density function and parameter μ, σ2, Probability p provides above-mentioned t0
CN201711490082.2A 2017-12-29 2017-12-29 The state of an illness processing path planing method of first-aid system Pending CN108305493A (en)

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Publication number Priority date Publication date Assignee Title
KR20040023902A (en) * 2002-09-12 2004-03-20 에스케이 주식회사 Apparatus for producing traffic information and method thereof, and traffic information providing system
CN102353381A (en) * 2011-07-06 2012-02-15 广东威创视讯科技股份有限公司 Method and device for obtaining optimal path to hurry to scene of traffic accident
CN102393206A (en) * 2011-10-19 2012-03-28 北京世纪高通科技有限公司 Path planning method and device
CN103077610A (en) * 2012-12-31 2013-05-01 清华大学 Road trip time estimating method and system
CN103134505A (en) * 2011-11-25 2013-06-05 天眼卫星科技有限公司 Route planning system and method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040023902A (en) * 2002-09-12 2004-03-20 에스케이 주식회사 Apparatus for producing traffic information and method thereof, and traffic information providing system
CN102353381A (en) * 2011-07-06 2012-02-15 广东威创视讯科技股份有限公司 Method and device for obtaining optimal path to hurry to scene of traffic accident
CN102393206A (en) * 2011-10-19 2012-03-28 北京世纪高通科技有限公司 Path planning method and device
CN103134505A (en) * 2011-11-25 2013-06-05 天眼卫星科技有限公司 Route planning system and method thereof
CN103077610A (en) * 2012-12-31 2013-05-01 清华大学 Road trip time estimating method and system

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