CN108734876B - Background reservation car renting method based on pre-estimated electric quantity and waiting time - Google Patents

Background reservation car renting method based on pre-estimated electric quantity and waiting time Download PDF

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CN108734876B
CN108734876B CN201710241204.8A CN201710241204A CN108734876B CN 108734876 B CN108734876 B CN 108734876B CN 201710241204 A CN201710241204 A CN 201710241204A CN 108734876 B CN108734876 B CN 108734876B
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vehicle
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renting
electric quantity
customer service
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CN108734876A (en
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蒋阳川
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Ningbo Xuanyuexing Electric Automobile Service Co Ltd
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    • G—PHYSICS
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    • G07F17/00—Coin-freed apparatus for hiring articles; Coin-freed facilities or services
    • G07F17/0042—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for hiring of objects
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    • G—PHYSICS
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    • G06Q30/06—Buying, selling or leasing transactions
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Abstract

The invention discloses a background car renting reservation method based on pre-estimated electric quantity and waiting time, which comprises the following steps of: A. the user communicates with the customer service through a telephone, and the customer service inputs a vehicle using requirement to the server; B. the server selects a route and calculates the mileage of the route; C. if the vehicles with the estimated electric quantity enough to support all the mileage exist, displaying a list of the vehicles to the customer service, and entering the step D; if not, entering step E; D. the customer service cooperative user selects a proper vehicle reservation; E. b, the server searches for transfer car renting points, and the user selects a proper transfer car renting point to enter the step F; if the route does not have a transfer car rental point, entering a charging car rental process; F. and the customer service cooperative user selects a proper vehicle for reservation. Through the steps, the user can stably rent the automobile with enough electric quantity, and the occurrence of half-way power shortage and anchor dropping is effectively reduced. The scheme is suitable for all electric automobile leasing systems.

Description

Background reservation car renting method based on pre-estimated electric quantity and waiting time
Technical Field
The invention relates to the field of electric automobile leasing, in particular to a background car leasing reservation method based on pre-estimated electric quantity and waiting time.
Background
The electric automobile is a vehicle driven by a battery, the electric quantity directly determines the distance capable of driving, and if the electric automobile runs out of electricity on the way, great inconvenience is brought to users.
With the increasing popularization of the time-sharing leasing mode, the requirement of the reserved charging is gradually drawn to the fine management, and the requirements of the vehicle leasing demanders on the endurance mileage and the charging time of the vehicle are improved. Increasing the effective charging time of vehicles and securing the effective needs of vehicle rental demanders is also becoming increasingly urgent.
The national intellectual property office of the people's republic of China discloses a patent document (publication number: CN103944201A) named as ' a timing charging pile for electric vehicles ' in 2014, 23, wherein the timing charging pile for electric vehicles is a metal shell, a power line for connecting 220V alternating current, a single-phase electronic electric energy meter connected with the power line, an overload protection circuit breaker connected with the electric energy meter, a microcomputer time control switch connected with the circuit breaker, and a charging port connected with the time control switch and a charging wire are contained in the timing charging pile for electric vehicles; all the components are fixed in the metal shell, and the components are connected well by wires. The scheme can charge in time within a preset time period, but the reservation management is insufficient, and the requirements of customers cannot be met.
Disclosure of Invention
The invention mainly solves the technical problem that the client requirements cannot be met in the aspect of charging reservation in the prior art, and provides a background reservation car renting method based on estimated electric quantity and waiting time, which can make reservations, ensure that a user has enough electric quantity, and avoid the situation of half-way breakdown due to insufficient electric quantity.
The invention mainly solves the technical problems through the following technical scheme: a background reservation car renting method based on estimated electric quantity and waiting time comprises the following steps:
A. a user expresses a vehicle using requirement to a customer service through a telephone, the customer service logging in a background of a vehicle renting system inputs the vehicle using requirement to the vehicle renting system, and the vehicle using requirement comprises a starting point, a destination, a must-pass point and vehicle using time; the vehicle using time is generally the time for starting using the vehicle; the customer service logs in a background of the car renting system through an internal platform;
B. after receiving the vehicle using requirement, a server of the vehicle renting system selects a route according to the vehicle using requirement and the navigation database and calculates the mileage of the route; the selected route must pass through the requisite points, or multiple routes may be provided for selection by the user himself;
C. defining the residual electric quantity of the vehicle from the current continuous charging to the vehicle using time as the estimated electric quantity of the vehicle; the estimated electric quantity of the vehicle is the sum of the current residual electric quantity and the electric quantity charged in the period from the current time to the time of using the vehicle; the server searches the estimated electric quantity conditions of all rentable vehicles in the renting points of the starting point, if the vehicles with the estimated electric quantity enough to support all mileage exist, a list of the vehicles is displayed to the customer service through a background management interface, and the step D is carried out; if the vehicles with the predicted electric quantity enough to support all the mileage do not exist, entering the step E; in the process of the step, the server calculates the chargeable electric quantity according to the charging rate of each rentable vehicle, then calculates the mileage capable of driving according to the estimated electric quantity, and analyzes the farthest place capable of being reached by combining with the route; estimating that the electric quantity cannot exceed the maximum electric quantity of the vehicle;
D. the customer service helps the user to select a proper vehicle according to the user requirements (price, member quantity, brand, and the like) to complete the reservation; the reserved vehicle starts to charge until full and can not be reserved by other people any more, and is regarded as being rented;
E. when the estimated electric quantity of at least one vehicle in the start point of the taxi spot can support the vehicle to reach a certain taxi spot, the reachable taxi spot is called a transfer taxi spot, the server searches the transfer taxi spot from the route, then a list of all transfer taxi spots is displayed to the customer service through a background management interface, the customer service helps the user to select a proper transfer taxi spot according to the requirements of the user, the background management interface displays the list of vehicles which can reach the selected transfer taxi spot to the customer service, and the step F is entered; if the route does not have a transfer car renting point, the background management interface prompts the customer service that no available car exists, and the customer service informs a user to enter a charging car renting process;
F. and the customer service helps the user select a proper vehicle for reservation according to the user requirement.
The charging and car renting process comprises the following steps:
s01, defining the car renting point on the route as an intermediate car renting point, and setting the initial value of the variable i as 1;
s02, the server calculates the average waiting time W from the vehicle to the ith intermediate renting pointqi；
S03, i is increased by 1, and the step S02 is repeated until all intermediate car renting points are traversed;
s04, sending all intermediate car renting points and corresponding average waiting time lists to the user, selecting a proper intermediate car renting point from the lists by the user, sending a list of cars which can reach the intermediate car renting point to the user by the server, and entering the step S05;
and S05, selecting a proper vehicle by the user for reservation.
The charging car renting process can inform the user how long the charging can be performed when the user reaches the middle car renting point, so that the user can conveniently judge whether the whole travel is completed by adopting a mode of charging the middle car renting point to supplement energy.
Through the steps, the user can stably rent the automobile with enough electric quantity, and the occurrence of half-way power shortage and anchor dropping is effectively reduced.
Preferably, in step H, the average waiting time is determined by the following formula: wqi＝Lqi/λ；LqiThe average queue length when the vehicle reaches the ith intermediate rental car point is lambda, and the number of the vehicles reaching the ith intermediate rental car point in unit time is lambda. λ is historical empirical data.
Preferably, the average queue length of the vehicle when reaching the ith intermediate rental car spot is determined by the following formula:
Lqi＝Pi·ρs/(1-ρs)
ρs＝ρi/Si＝λ/Si·μi
Piis the probability that the vehicle needs to wait when reaching the ith intermediate rental car spot, SiThe number of charging piles, rho, for the ith intermediate rental car spotiFor charging load of ith intermediate rental car spot, muiNumber of vehicles processed per unit time for the ith intermediate rental point, ρsAnd the loads of the single charging piles are reserved for middle car renting.
Preferably, the probability P that the vehicle needs to wait when arriving at the ith intermediate rental car pointiDetermined by the following equation:
Figure BDA0001269454720000031
n is the number of vehicles.
Preferably, the number of vehicles mu processed in unit time by the ith intermediate rental car spotiDetermined by the following equation:
Figure BDA0001269454720000041
μ is the number of vehicles processed per charging pile per unit time.
Preferably, the following steps are also included after the step F:
G. after the user arrives at the transfer taxi point, the user contacts the customer service through the telephone, selects to change the car or charge, if the user selects to charge, the step H is carried out, and if the user selects to change the car, the step I is carried out;
H. the server calculates the time required by the fact that the remaining distance can be supported by the charged electricity, and then informs the customer service through a background management interface, and the customer service forwards the customer service; acquiring mileage to be driven according to a starting point, a route and a terminal point, and then reversely calculating the required electric quantity;
I. the server inquires the residual electric quantity of all rentable vehicles in the transfer renting points, calculates other renting points on a subsequent route which can be reached by the vehicle according to the residual electric quantity, and then lists at least the rentable vehicles according to the quantity of the other renting points which can be reached on a background management interface;
J. the customer service assists the user to return the originally rented vehicles and select a proper vehicle from the rentable vehicles to rent, and the vehicle changing process is completed.
Preferably, in step H, the vehicle rented by the user calculates the current electric quantity in real time during the charging process to support other vehicle renting points on the subsequent route where the vehicle arrives, and notifies the reachable vehicle renting points to the user through a short message every half hour, or displays the service of the query call received from the user through a background management interface, and the service is forwarded to the user.
Through the process, the vehicle changing or charging process at the transfer renting point is completed.
Preferably, the mileage L that the vehicle can travel is determined according to the following algorithm:
L＝C/W
where C is the remaining power of the vehicle and W is the average power consumption per kilometer of the vehicle.
The formula can obtain basic mileage or reversely calculate the required electric quantity.
Preferably, the mileage that the vehicle can travel is corrected by:
s1, obtaining the congestion index on the road, and if the congestion index is 0-2, taking the congestion factor as 1; if the congestion index is 3-4, the congestion factor is taken as 1.02; if the congestion index is 5-6, the congestion factor is taken as 1.05; if the congestion index is 7-8, the congestion factor is taken as 1.08; if the congestion index is 9-10, the congestion factor is taken as 1.1;
s2, acquiring air temperature conditions in the driving time period, and if the air temperature is higher than 30 ℃ or lower than 5 ℃, taking an air temperature factor as 1.1; if the air temperature is between 5 ℃ and 30 ℃, the air temperature factor is taken as 1;
s3, obtaining historical driving data of the user, and taking the personal factor as the ratio of the average power consumption of the historical driving of the user to the standard power consumption;
and S4, multiplying the mileage L which can be traveled by the vehicle by the congestion factor, the air temperature factor and the personal factor in sequence, and obtaining a value which is the corrected mileage which can be traveled by the vehicle and is recorded as L1.
The congestion index is issued by the road management department. The air temperature conditions are obtained from information published by the meteorological department. And historical driving data of the user is obtained from the database, and if the user is a new user, the personal factors of the previous five users are 1.
Preferably, the result obtained in step S4 is further modified by the following steps:
s5, calculating the estimated final position of the vehicle according to the L1, the starting point and the route, wherein the length between the estimated final position and the starting point on the route is L1;
s6, acquiring the altitude of the starting point as H1, acquiring the altitude of the estimated final position as H2, and acquiring the altitude factor K according to the following formula:
K＝1+β×(H2-H1)/L1
in the formula, beta is the unit altitude energy consumption base number of the vehicle and is determined by the parameters of the vehicle;
s7, multiplying the L1 by the altitude factor K to obtain the mileage of the new vehicle;
s8, recalculating the estimated final position of the vehicle according to the route, the starting point and the mileage of the new vehicle;
and S9, returning and repeating the steps S6 to S8 for a plurality of times to obtain the final mileage which can be in the vehicle form, namely the corrected result.
Preferably, the number of times of repeating the steps S6 to S8 is 3-5 times.
Through the steps, the influence of the altitude on the power consumption is considered, and the calculation result is more accurate. The invention has the substantial effects that the user can conveniently rent the car at any time in any place by the telephone, and has enough electric quantity when using the car, accurate mileage calculation and effective avoidance of half-way power shortage.
Drawings
Fig. 1 is a flow chart of an appointed taxi renting process of the present invention.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b): the background car renting reservation method based on the estimated electric quantity and the waiting time, as shown in fig. 1, includes the following steps:
A. a user expresses a vehicle using requirement to a customer service through a telephone, the customer service logging in a background of a vehicle renting system inputs the vehicle using requirement to the vehicle renting system, and the vehicle using requirement comprises a starting point, a destination, a must-pass point and vehicle using time; the vehicle using time is generally the time for starting using the vehicle;
B. after receiving the vehicle using requirement, a server of the vehicle renting system selects a route according to the vehicle using requirement and the navigation database and calculates the mileage of the route; the selected route must pass through the requisite points, or multiple routes may be provided for selection by the user himself;
C. defining the residual electric quantity of the vehicle from the current continuous charging to the vehicle using time as the estimated electric quantity of the vehicle; the estimated electric quantity of the vehicle is the sum of the current residual electric quantity and the electric quantity charged in the period from the current time to the time of using the vehicle; the server searches the estimated electric quantity conditions of all rentable vehicles in the renting points of the starting point, if the vehicles with the estimated electric quantity enough to support all mileage exist, a list of the vehicles is displayed to the customer service through a background management interface, and the step D is carried out; if the vehicles with the predicted electric quantity enough to support all the mileage do not exist, entering the step E; in the process of the step, the server calculates the chargeable electric quantity according to the charging rate of each rentable vehicle, then calculates the mileage capable of driving according to the estimated electric quantity, and analyzes the farthest place capable of being reached by combining with the route; estimating that the electric quantity cannot exceed the maximum electric quantity of the vehicle;
D. the customer service helps the user to select a proper vehicle according to the user requirements (price, member quantity, brand, and the like) to complete the reservation; the reserved vehicle starts to charge until full and can not be reserved by other people any more, and is regarded as being rented;
E. when the estimated electric quantity of at least one vehicle in the start point of the taxi spot can support the vehicle to reach a certain taxi spot, the reachable taxi spot is called a transfer taxi spot, the server searches the transfer taxi spot from the route, then a list of all transfer taxi spots is displayed to the customer service through a background management interface, the customer service helps the user to select a proper transfer taxi spot according to the requirements of the user, the background management interface displays the list of vehicles which can reach the selected transfer taxi spot to the customer service, and the step F is entered; if the route does not have a transfer car renting point, the background management interface prompts no available car to the customer service, and the customer service returns to the step A to modify the car using requirement or enter a charging car renting process after informing the user;
F. and the customer service helps the user select a proper vehicle for reservation according to the user requirement.
Through the steps, the user can stably rent the automobile with enough electric quantity, and the occurrence of half-way power shortage and anchor dropping is effectively reduced.
The charging and car renting process comprises the following steps:
s01, defining the car renting point on the route as an intermediate car renting point, and setting the initial value of the variable i as 1;
s02, the server calculates the average waiting time W from the vehicle to the ith intermediate renting pointqi；
S03, i is increased by 1, and the step S02 is repeated until all intermediate car renting points are traversed;
s04, sending all intermediate car renting points and corresponding average waiting time lists to the user, selecting a proper intermediate car renting point from the lists by the user, sending a list of cars which can reach the intermediate car renting point to the user by the server, and entering the step S05;
and S05, selecting a proper vehicle by the user for reservation.
The charging car renting process can inform the user how long the charging can be performed when the user reaches the middle car renting point, so that the user can conveniently judge whether the whole travel is completed by adopting a mode of charging the middle car renting point to supplement energy.
In step H, the average waiting time is determined by the following formula: wqi＝Lqi/λ；LqiThe average queue length when the vehicle reaches the ith intermediate rental car point is lambda, and the number of the vehicles reaching the ith intermediate rental car point in unit time is lambda. λ is historical empirical data.
The average queue length of the vehicle when the vehicle reaches the ith intermediate rental car spot is determined by the following formula:
Lqi＝Pi·ρs/(1-ρs)
ρs＝ρi/Si＝λ/Si·μi
Piis the probability that the vehicle needs to wait when reaching the ith intermediate rental car spot, SiThe number of charging piles, rho, for the ith intermediate rental car spotiFor charging load of ith intermediate rental car spot, muiNumber of vehicles processed per unit time for the ith intermediate rental point, ρsAnd the loads of the single charging piles are reserved for middle car renting.
Probability P that vehicle needs to wait when arriving at ith intermediate rental car pointiDetermined by the following equation:
Figure BDA0001269454720000081
n is the number of vehicles.
Number of vehicles mu processed in unit time by ith intermediate rental car spotiDetermined by the following equation:
Figure BDA0001269454720000082
μ is the number of vehicles processed per charging pile per unit time.
The following steps are also included after step F:
G. after the user arrives at the transfer taxi point, the user contacts the customer service through the telephone, selects to change the car or charge, if the user selects to charge, the step H is carried out, and if the user selects to change the car, the step I is carried out;
H. the server calculates the time required by the fact that the remaining distance can be supported by the charged electricity, and then informs the customer service through a background management interface, and the customer service forwards the customer service; acquiring mileage to be driven according to a starting point, a route and a terminal point, and then reversely calculating the required electric quantity;
I. the server inquires the residual electric quantity of all rentable vehicles in the transfer renting points, calculates other renting points on a subsequent route which can be reached by the vehicle according to the residual electric quantity, and then lists at least the rentable vehicles according to the quantity of the other renting points which can be reached on a background management interface;
J. the customer service assists the user to return the originally rented vehicles and select a proper vehicle from the rentable vehicles to rent, and the vehicle changing process is completed.
And step H, calculating the current electric quantity of the vehicle rented by the user in real time in the charging process to support other vehicle renting points on a subsequent route where the vehicle arrives, informing the user of the reachable vehicle renting points through a short message every half hour, or displaying the service of the received inquiry call made by the user through a background management interface, and informing the user of the service.
Through the process, the vehicle changing or charging process at the transfer renting point is completed.
The mileage L that the vehicle can travel is determined according to the following algorithm:
L＝C/W
where C is the remaining power of the vehicle and W is the average power consumption per kilometer of the vehicle.
The formula can obtain basic mileage or reversely calculate the required electric quantity.
Further, the mileage that the vehicle can travel is corrected by the following steps:
s1, obtaining the congestion index on the road, and if the congestion index is 0-2, taking the congestion factor as 1; if the congestion index is 3-4, the congestion factor is taken as 1.02; if the congestion index is 5-6, the congestion factor is taken as 1.05; if the congestion index is 7-8, the congestion factor is taken as 1.08; if the congestion index is 9-10, the congestion factor is taken as 1.1;
s2, acquiring air temperature conditions in the driving time period, and if the air temperature is higher than 30 ℃ or lower than 5 ℃, taking an air temperature factor as 1.1; if the air temperature is between 5 ℃ and 30 ℃, the air temperature factor is taken as 1;
s3, obtaining historical driving data of the user, and taking the personal factor as the ratio of the average power consumption of the historical driving of the user to the standard power consumption;
and S4, multiplying the mileage L which can be traveled by the vehicle by the congestion factor, the air temperature factor and the personal factor in sequence, and obtaining a value which is the corrected mileage which can be traveled by the vehicle and is recorded as L1.
The congestion index is issued by the road management department. The air temperature conditions are obtained from information published by the meteorological department. And historical driving data of the user is obtained from the database, and if the user is a new user, the personal factors of the previous five users are 1.
The result obtained in step S4 is further modified by the following steps:
s5, calculating the estimated final position of the vehicle according to the L1, the starting point and the route, wherein the length between the estimated final position and the starting point on the route is L1;
s6, acquiring the altitude of the starting point as H1, acquiring the altitude of the estimated final position as H2, and acquiring the altitude factor K according to the following formula:
K＝1+β×(H2-H1)/L1
in the formula, beta is the unit altitude energy consumption base number of the vehicle and is determined by the parameters of the vehicle;
s7, multiplying the L1 by the altitude factor K to obtain the mileage of the new vehicle;
s8, recalculating the estimated final position of the vehicle according to the route, the starting point and the mileage of the new vehicle;
and S9, returning and repeating the steps S6 to S8 for a plurality of times to obtain the final mileage which can be in the vehicle form, namely the corrected result.
The number of times of repeating the steps S6 to S8 is 3-5 times.
Through the steps, the influence of the altitude on the power consumption is considered, and the calculation result is more accurate.
The most accurate result can be obtained by adopting an integral mode, but when vehicles are more and hired personnel are more, the load of the server is overlarge, and by adopting the calculation mode, the process is simple, the calculation amount is small, the speed is high, and meanwhile, the higher accuracy is also kept.
From a prudent perspective, 90% of the final calculation result can be taken as the final available mileage to calculate the end point, the charging time and the like.
The electric vehicle time-sharing leasing system comprises an internal platform and a network management platform, wherein the internal platform is used as a customer service interface and comprises an information interaction module, a customer service account management module, an information management module, a business handling module and a leasing business issuing module, the customer service account management module, the information management module, the business handling module and the leasing business issuing module are all connected with the information interaction module, the network management platform comprises an identity authentication service, a heartbeat and message pushing service, an APP service group, a member login state database, a fee deducting service, a short message service, a message queue and a data cache cluster, the information interaction module of the internal platform is respectively connected with the identity authentication service and the APP service group, the identity authentication service, the heartbeat and message pushing service and the APP service group are respectively connected with the member login state database, and the APP service group is also connected with the data cache cluster, the message queue is respectively connected to the APP service group, the fee deduction service and the short message service.
The APP service group comprises a load balancer and a plurality of APP services, the load balancer is connected with the internal platform, and all the APP services are connected with the load balancer.
The internal platform is connected to an identity authentication service and an APP service group through an HTTP request; the internal platform initiates a login request to the identity authentication service and can perform other operations after verification; the internal platform regularly sends a request to the APP service group and acquires data; and when the internal platform exits, an exit request is initiated to the identity authentication service.
The identity authentication service receives a login request initiated by a page and verifies whether a user name and a password of a customer service are legal or not;
the APP service operates according to the service type of the request of the internal platform;
the message queue is used for storing and distributing messages, and when fee deduction or short message sending is needed, the messages are written into the message queue.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the terms background, vehicle demand, remaining capacity, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims (7)

1. A background car renting reservation method based on pre-estimated electric quantity and waiting time is characterized by comprising the following steps:
A. a user expresses a vehicle using requirement to a customer service through a telephone, the customer service logging in a background of a vehicle renting system inputs the vehicle using requirement to the vehicle renting system, and the vehicle using requirement comprises a starting point, a destination, a must-pass point and vehicle using time;
B. after receiving the vehicle using requirement, a server of the vehicle renting system selects a route according to the vehicle using requirement and the navigation database and calculates the mileage of the route;
C. defining the residual electric quantity of the vehicle from the current continuous charging to the vehicle using time as the estimated electric quantity of the vehicle; the server searches the estimated electric quantity conditions of all rentable vehicles in the renting points of the starting point, if the vehicles with the estimated electric quantity enough to support all mileage exist, a list of the vehicles is displayed to the customer service through a background management interface, and the step D is carried out; if the vehicles with the predicted electric quantity enough to support all the mileage do not exist, entering the step E;
D. the customer service helps the user to select a proper vehicle according to the user requirement to complete the reservation;
E. when the estimated electric quantity of at least one vehicle in the start point of the taxi spot can support the vehicle to reach a certain taxi spot, the reachable taxi spot is called a transfer taxi spot, the server searches the transfer taxi spot from the route, then a list of all transfer taxi spots is displayed to the customer service through a background management interface, the customer service helps the user to select a proper transfer taxi spot according to the requirements of the user, the background management interface displays the list of vehicles which can reach the selected transfer taxi spot to the customer service, and the step F is entered; background management interface if no transfer points are on the route
Prompting the customer service that no available vehicle exists, and informing the customer service that a user enters a charging and car renting process;
F. the customer service helps the user select a proper vehicle for reservation according to the user requirement;
the charging and car renting process comprises the following steps:
s01, defining the car renting point on the route as an intermediate car renting point, and setting the initial value of the variable i as 1;
s02, the server calculates the average waiting time W from the vehicle to the ith intermediate renting pointqi；
S03, i is increased by 1, and the step S02 is repeated until all intermediate car renting points are traversed;
s04, sending all intermediate car renting points and corresponding average waiting time lists to the user, selecting a proper intermediate car renting point from the lists by the user, sending a list of cars which can reach the intermediate car renting point to the user by the server, and entering the step S05;
s05, selecting a proper vehicle by the user for reservation;
the average latency is determined by the following equation:
Figure DEST_PATH_IMAGE002
；Lqithe average platoon length when the vehicle arrives at the ith intermediate rental car spot,
Figure DEST_PATH_IMAGE004
the number of vehicles reaching the ith intermediate rental car point in unit time is shown;
the average queue length of the vehicle when the vehicle reaches the ith intermediate rental car spot is determined by the following formula:
Figure DEST_PATH_IMAGE006
Figure DEST_PATH_IMAGE008
Piis the probability that the vehicle needs to wait when reaching the ith intermediate rental car spot, SiThe number of charging piles for the ith intermediate rental car spot,
Figure DEST_PATH_IMAGE010
for the charging load of the ith intermediate rental car spot,
Figure DEST_PATH_IMAGE012
the number of vehicles processed in a unit time for the ith intermediate rental car spot,
Figure DEST_PATH_IMAGE014
the load of a single charging pile is reserved for middle car renting points;
the probability Pi that the vehicle needs to wait when it reaches the ith intermediate rental car spot is determined by the following formula:
Figure DEST_PATH_IMAGE016
n is the number of vehicles.
2. The background vehicle renting method based on the estimated electric quantity and the waiting time as claimed in claim 1, wherein the number of vehicles processed in unit time at the ith intermediate renting point
Figure 338085DEST_PATH_IMAGE012
Determined by the following equation:
Figure DEST_PATH_IMAGE018
Figure DEST_PATH_IMAGE020
the number of vehicles processed in unit time of each charging pile is shown.
3. The background reservation car renting method based on the estimated electric quantity and the waiting time as claimed in claim 1, wherein the step F is followed by the following steps:
G. after the user arrives at the transfer taxi point, the user contacts the customer service through the telephone, selects to change the car or charge, if the user selects to charge, the step H is carried out, and if the user selects to change the car, the step I is carried out;
H. the server calculates the time required by the fact that the remaining distance can be supported by the charged electricity, and then informs the customer service through a background management interface, and the customer service forwards the customer service;
I. the server inquires the residual electric quantity of all rentable vehicles in the transfer renting points, calculates other renting points on a subsequent route which can be reached by the vehicle according to the residual electric quantity, and then lists at least the rentable vehicles according to the quantity of the other renting points which can be reached on a background management interface;
J. the customer service assists the user to return the originally rented vehicles and select a proper vehicle from the rentable vehicles to rent, and the vehicle changing process is completed.
4. The background vehicle renting reservation method based on the estimated electric quantity and the waiting time as claimed in claim 3, wherein in the step H, the vehicle rented by the user calculates the current electric quantity in real time in the charging process to support other vehicle renting points on the subsequent route where the vehicle arrives, and informs the user of the available renting points through a short message every half hour, or shows the service of the inquiry call made by the user through a background management interface, and the service informs the user.
5. A background vehicle renting method based on the estimated electric quantity and the waiting time according to claim 1, 3 or 4, wherein the mileage L that the vehicle can travel is determined according to the following algorithm:
L=C/W
where C is the remaining power of the vehicle and W is the average power consumption per kilometer of the vehicle.
6. The background vehicle renting reservation method based on the estimated electric quantity and the waiting time as claimed in claim 5, wherein the mileage that the vehicle can travel is corrected by the following steps:
s1, obtaining the congestion index on the road, and if the congestion index is 0-2, taking the congestion factor as 1; if the congestion index is 3-4, the congestion factor is taken as 1.02; if the congestion index is 5-6, the congestion factor is taken as 1.05; if the congestion index is 7-8, the congestion factor is taken as 1.08; if the congestion index is 9-10, the congestion factor is taken as 1.1;
s2, acquiring air temperature conditions in the driving time period, and if the air temperature is higher than 30 ℃ or lower than 5 ℃, taking an air temperature factor as 1.1; if the air temperature is between 5 ℃ and 30 ℃, the air temperature factor is taken as 1;
s3, obtaining historical driving data of the user, and taking the personal factor as the ratio of the average power consumption of the historical driving of the user to the standard power consumption;
and S4, multiplying the mileage L which can be traveled by the vehicle by the congestion factor, the air temperature factor and the personal factor in sequence, and obtaining a value which is the corrected mileage which can be traveled by the vehicle and is recorded as L1.
7. The background car renting method based on the estimated electric quantity and the waiting time of the car as claimed in claim 6, wherein the result obtained in step S4 is further modified according to the following steps:
s5, calculating the estimated final position of the vehicle according to the L1, the starting point and the route, wherein the length between the estimated final position and the starting point on the route is L1;
s6, acquiring the altitude of the starting point as H1, acquiring the altitude of the estimated final position as H2, and acquiring the altitude factor K according to the following formula:
Figure DEST_PATH_IMAGE022
in the formula (I), the compound is shown in the specification,
Figure DEST_PATH_IMAGE024
the unit altitude energy consumption cardinal number of the vehicle is determined by the parameters of the vehicle;
s7, multiplying the L1 by the altitude factor K to obtain the mileage of the new vehicle;
s8, recalculating the estimated final position of the vehicle according to the route, the starting point and the mileage of the new vehicle;
and S9, returning and repeating the steps S6 to S8 for a plurality of times to obtain the final mileage which can be in the vehicle form, namely the corrected result.
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