Real-time management system based on shared automobile endurance mileage and use method thereof
Technical Field
The invention relates to a shared automobile management system, in particular to a real-time management system based on shared automobile endurance mileage and a using method thereof.
Background
In recent years, the development of shared automobiles draws more and more attention, and in the aspect of middle and long distance travel, the shared automobiles are gradually favored by people by virtue of the advantages of convenience, rapidness, low carbon and environmental protection. However, the shared automobile market is still immature at present and a corresponding management system is still incomplete, so that a lot of problems are encountered in the actual use process of the shared automobile, for example, during driving, an event that the automobile is stranded in the midway due to insufficient electric quantity to drive to a nearby charging pile often occurs, which not only causes poor driving experience, but also brings hidden dangers to the safety of users, and therefore, how to solve the problem that the automobile cannot reach the nearby charging pile due to insufficient electric quantity during the driving is necessary.
In 2015, the document of the chinese patent application No. 201510654575.X by the grand army proposes a method for determining the remaining electric energy running distance of a scooter. The method can avoid the situation that the user is trapped in the way due to insufficient electric quantity by pre-calculating the maximum straight-line distance that the residual electric quantity can travel, then demarcating a destination address selectable range and reminding the user to charge in advance when the destination selected by the user exceeds the range. However, since the actual driving route of the automobile is not straight, the method cannot completely solve the problem of anchoring the automobile in the way.
For example, a management system and a working method for calculating the driving mileage of an electric vehicle are proposed in the document with chinese patent application No. 201110174612.9. According to the method, the driving mileage of the automobile is calculated by acquiring the current position information, the actual traffic road condition information, the average speed data, the residual electric quantity of the battery and the power loss information of each part of the automobile, and the method can help a user to reasonably plan the journey and improve the driving experience of the user. However, the method cannot guarantee that the automobile can run to the nearest charging pile all the time in the process of running, and the possibility of midway anchorage still exists.
Disclosure of Invention
In view of the existing defects, the invention provides a real-time management system for preventing shared automobiles from being anchored midway due to insufficient electric quantity.
The invention relates to a real-time management system based on shared automobile endurance mileage and a use method thereof, which are realized by the following scheme:
a real-time management system based on shared automobile endurance mileage comprises a mobile phone client, a shared automobile information acquisition module, a server storage module, a server monitoring module and a server control module;
the mobile phone client is used for selecting a trip destination P and a vehicle c selected by a usereAnd a terminal point charging pile akAnd a selected travel route BmThe alarm instruction is sent to the server storage module and is used for receiving the alarm instruction sent by the server control module;
the shared automobile information acquisition module comprises an acceleration sensor for acquiring automobile acceleration a, a temperature sensor for acquiring battery ambient temperature T, an inclination angle sensor for acquiring road gradient alpha and a battery residual capacity EBTBattery monitoring module for calculating drivingElectrical equipment monitoring module for energy coefficient delta and method for storing motor efficiency etamcMotor transmission efficiency etarVehicle dead weight m and battery discharge efficiency ηqThe vehicle-mounted storage module is used for storing the driving mileage of the vehicle; the vehicle-mounted computing unit sends the driving mileage of the automobile to the server monitoring module through the server storage module;
the server storage module is used for storing the information received from the mobile phone client and the shared automobile information acquisition module together with the position a of the charging pile in advancei(i is 1,2 … n) and sending to the server monitoring module;
the server monitoring module is used for receiving the information sent by the server storage module, simultaneously monitoring the position of the shared automobile in real time, calculating the remaining mileage of the driving and the distance from the shared automobile to the surrounding nearest charging pile in real time, and sending the calculated remaining mileage of the driving and the distance from the shared automobile to the surrounding nearest charging pile to the server control module in real time;
the server control module is used for receiving the information sent by the server monitoring module, judging the size relationship among the cruising mileage of the automobile, the remaining distance of the automobile and the distance of the charging pile closest to the automobile in real time, and sending a corresponding instruction to the mobile phone client according to a preset algorithm.
Further, the mobile phone client is a mobile phone loaded with a shared car APP.
The technical scheme of the method of the invention is as follows: a use method of a real-time management system based on shared automobile endurance mileage comprises the following steps:
step 1: the user selects the shared automobile c through the mobile phone clienteAnd a terminal point charging pile akAnd a travel route BmSending the data to a server storage module;
step 2: sharing automobile information acquisition module to keep the automobile driving mileage StSending the data to a server storage module in real time;
and step 3: the server storage module will receive the data from the last two stepsTogether with pre-stored charging pile position information ai(i-1, 2.. n) are sent to the server monitoring module together;
and 4, step 4: the server monitoring module monitors the remaining distance R of the driving in real timetAutomobile ceCharging pile a closest tojDistance L ofminWhile simultaneously reacting Rt、LminAnd StSending the data to a server control module;
and 5: server control module according to Rt、Lmin、StThe corresponding instruction is sent to the mobile phone client according to the preset algorithm.
Further, the specific process of step 1 is as follows:
step 1.1: a user sends a vehicle using request through a shared vehicle APP in a mobile phone client;
step 1.2: server storage module pushes shared automobile c near user to useri(i=1,2..n);
Step 1.3: user selects a vehicle ceAs a trip car;
step 1.4: a user inputs the position of a travel terminal point P through a shared automobile APP in a mobile phone client;
step 1.5: the server storage module pushes a charging pile a near the P to the useri(i=1,2..n);
Step 1.6: the user selects one charging pile as the terminal point to charge the pile ak;
Step 1.7: server storage Module planning ceTo akRoute B ofi(i=1,2,3);
Step 1.8: the user selects a route BmAs a travel route;
step 1.9: the travel route B selected by the usermAnd sending the data to a server storage module.
Further, the specific process of step 2 is as follows:
step 2.1: an acceleration sensor in the shared automobile information acquisition module acquires the acceleration a of the automobile in real time, an inclination angle sensor acquires the road gradient alpha in real time, and a temperature sensor acquires the ambient temperature T of the battery in real time and outputs the ambient temperature T to a vehicle-mounted computing unit in real time;
step 2.2: the battery monitoring module in the shared automobile information acquisition module is responsible for monitoring the residual electric quantity E of the automobile battery in real timeBTAnd E is connected via a CAN busBTSending in real time to an on-board computing unit, EBTThe specific calculation method is that the total energy of the battery is multiplied by the SOC value of the battery to obtain;
step 2.3: an electrical equipment monitoring module in the shared automobile information acquisition module monitors the service condition of electrical equipment in the automobile in real time, and defines the value of the driving energy coefficient delta according to different service conditions;
step 2.4: some parameter information of car battery and motor are stored in the on-vehicle storage module in the shared car information acquisition module, include: average discharge efficiency η of batteryqMotor and controller efficiency etamcVehicle dead weight m, and motor transmission efficiency ηrThe vehicle-mounted storage module sends the information to a vehicle-mounted computing unit through a CAN bus;
step 2.5: the vehicle-mounted computing unit receives the automobile acceleration a, the road gradient alpha and the battery residual capacity E in real timeBTRunning energy coefficient delta, and battery average discharge efficiency etaqMotor and controller efficiency etamcAnd motor transmission efficiency etarAccording to the formula
To calculate the driving mileage S of the automobiletThe vehicle-mounted computing unit calculates the driving mileage StAnd sending the data to a server storage module in real time.
Further, the step 2.3 specifically includes: when the air conditioner is not turned on and the vehicle-mounted multimedia equipment is not turned on, taking delta to be 0.95; when the vehicle-mounted multimedia equipment is turned on but the air conditioner is not turned on, taking delta to be 0.9; when the vehicle-mounted air conditioner is turned on but the vehicle-mounted multimedia equipment is not turned on, taking delta to be 0.8; when the air conditioner is turned on and the vehicle-mounted multimedia equipment is turned on, taking delta to be 0.75; and sends the value of δ to the on-board computing unit.
Further, the specific process of step 4 is as follows: the server monitoring module receives the shared automobile endurance mileage StIs multiplied by a safety factor of 0.8 and 0.8S is multipliedtSending the data to a server control module; simultaneously calculating in real time on route BmUpper ceTo akDistance to be traveled RtAnd R istSending the data to a server control module; monitoring with ceAs a center of circle, StCharging pile a in radius rangei(i ═ 1,2.. n) to ceDistance L ofi(i ═ 1,2.. n), and mixing LiMinimum value of LminAnd corresponding charging pile ajThe location of (j ═ 1,2.. n) is sent to the server control module.
Further, the specific process of step 5 is as follows: the server control module multiplies the driving mileage of the safety factor by the received driving mileage of 0.8StAnd the distance L to the nearest charging pile in the driving processminAnd in the selected route BmDistance remaining on travel RtThe size relation between the two is that different instructions are sent to the mobile phone client, specifically when the instruction is 0.8StGreater than or equal to LminWhen it is determined that R is presenttIf R is 0, iftIf not 0, returning to the step 4, if R is not 0tIs 0, then the user is at akReturning the vehicle and finishing driving; when 0.8StLess than LminJudging whether j and k are equal, if j is equal to k, judging RtIf R is 0, iftIf not 0, returning to the step 4, if R is not 0tIs 0, then the user is at akReturning the vehicle and finishing driving; if j is not equal to k, alarm information is sent to the mobile phone client, and a user is reminded of driving to the nearest charging pile a in timejIs charged at ajAnd (5) changing one vehicle for relay driving, and then returning to the step 1.
The invention has the beneficial effects that:
1. according to the invention, by comparing the automobile endurance mileage, the distance from the automobile to the nearest charging pile and the size relationship between the remaining driving mileage in real time and according to a preset algorithm, when the automobile endurance mileage is found to be insufficient to drive to the nearest charging pile, alarm information is sent to a user end to remind the user of driving to the nearest charging pile in time, so that the problem that the shared automobile is broken down midway due to insufficient electric quantity at present is solved, and the safety trip of the user is guaranteed;
2. according to the invention, the calculation of the mileage of the automobile is more accurate and reliable by defining the driving coefficient of the automobile, monitoring the state of the battery in real time, and introducing parameters such as acceleration and road gradient;
3. compared with the method for directly calculating the linear distance between the automobile and the charging pile in the prior patent, the method for calculating the distance between the automobile and the charging pile is more accurate by planning the route from the automobile to the nearby charging pile in real time;
4. in the preset algorithm, the safety coefficient is defined, so that the emergency situation that the automobile possibly consumes extra electric quantity due to traffic jam, detour and the like in the driving process is prevented, and the automobile is prevented from being anchored midway due to electric quantity exhaustion.
Drawings
FIG. 1 is a hardware relationship diagram of a real-time management system based on shared vehicle mileage and a method of use thereof;
FIG. 2 is a flow chart of a real-time management system based on shared vehicle mileage and a method of using the same.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments.
As shown in fig. 1, the real-time management system based on shared vehicle mileage of the present invention is composed of a mobile phone client, a shared vehicle information collection module, a server storage module, a server monitoring module, and a server control module. The shared automobile information acquisition module consists of a sensor module, a battery monitoring module, an electrical equipment monitoring module, a vehicle-mounted storage module and a vehicle-mounted computing unit.
The mobile phone client is a smart mobile phone with a shared automobile APP, and is used for information interaction and concrete representation between a user and a serverIn order to receive the user's car using request and position information in the car selecting link, and send the information to the server storage module, and send the destination position P and the destination charging pile a to the server storage modulekAnd transmitting the user-selected car to the server storage module when selecting the vehicle and the routeeDriving route Bm。
The sensor module in the shared automobile information acquisition module comprises an acceleration sensor, an inclination angle sensor and a temperature sensor, wherein the acceleration sensor is responsible for acquiring the acceleration a of the automobile in real time, the inclination angle sensor is responsible for acquiring the road gradient alpha in real time, and the temperature sensor is responsible for acquiring the ambient temperature T of the battery in real time. The battery monitoring module is responsible for monitoring the residual electric quantity value E of the battery in real timeBTThe electrical equipment monitoring module is responsible for monitoring the power utilization condition of electrical equipment in the vehicle in real time, different running energy coefficients delta are obtained according to different power utilization conditions through definition, and parameter information of the battery and the motor is stored in the vehicle-mounted storage module and specifically comprises the average discharge efficiency eta of the batteryqDriving efficiency eta r of motor, vehicle dead weight m and motor and controller efficiency etamc. The output of the sensor module, the output of the battery monitoring module, the output of the electrical equipment monitoring module and the output of the vehicle-mounted storage module are connected with the input of the vehicle-mounted computing unit, the vehicle-mounted computing unit computes the value of the driving mileage St of the automobile in real time according to the collected information and a formula, the output of the vehicle-mounted computing unit is connected with the input of the server storage module, and the St obtained after computation is transmitted to the server storage module.
The server storage module receives ce、ak、St、BmWaiting for information and pre-stored position information a of all charging pilesiAnd (i ═ 1,2.. n) is sent to the server monitoring module in real time.
The server monitoring module receives ce、Bm、akCalculating the remaining distance Rt of the current driving in real time, and simultaneously monitoring the distance L from the automobile to the nearest charging pile nearby in real timeminAnd mark the corresponding charging pile position ajThe output of the server monitoring module is connected with the input of the server control module, and St is summedCalculated LminAnd Rt and the like are sent to the server control module.
The server control module receives the S in real timet、Rt、Lmin、ajWait information and judge whether the vehicle can travel to nearest electric pile a that fillsjAnd sending a corresponding instruction to the mobile phone client.
As shown in fig. 2, fig. 2 is a flowchart of a real-time management system based on shared vehicle mileage, and is divided into three links, namely user selection, real-time calculation, control judgment and the like.
The following is a detailed description of the specific process steps of fig. 2, which is divided into a user selection link, a real-time calculation link, and a control judgment link.
Step 1, selecting a link by a user:
step 1.1: and the user sends a vehicle using request through the shared vehicle APP in the mobile phone client.
Step 1.2: server storage module pushes shared automobile c near user to useri(i=1,2..n)。
Step 1.3: user selects a vehicle ceThe automobile is used as a trip automobile.
Step 1.4: and the user inputs the position of the trip terminal point P through the shared automobile APP in the mobile phone client.
Step 1.5: the server storage module pushes a charging pile a near the P to the useri(i=1,2..n)。
Step 1.6: the user selects one charging pile as the terminal point to charge the pile ak。
Step 1.7: server planning ceTo akRoute B ofi(i=1,2,3)。
Step 1.8: the user selects a route BmAs a travel route.
Step 1.9: the travel route B selected by the usermAnd sending the data to a server storage module.
Step 2, calculating in real time:
step 2.1: an acceleration sensor in the shared automobile information acquisition module acquires the acceleration a of the automobile in real time, an inclination angle sensor acquires the road gradient alpha in real time, and a temperature sensor acquires the ambient temperature T of the battery in real time and outputs the ambient temperature T to the vehicle-mounted computing unit in real time.
Step 2.2: the battery monitoring module in the shared automobile information acquisition module is responsible for monitoring the residual electric quantity E of the automobile battery in real timeBTAnd E is connected via a CAN busBTAnd sending the data to the vehicle-mounted computing unit in real time. EBTThe specific calculation method is to multiply the total energy of the battery by the SOC value of the battery, wherein the SOC value is calculated by an ampere-hour integration method in the patent number CN201611081052.1 entitled "estimation method of the SOC of the lithium battery of the low-speed electric vehicle".
Step 2.3: the electric appliance monitoring module in the shared automobile information acquisition module monitors the service condition of an electric appliance in the automobile in real time, and defines the value of the running energy coefficient delta according to different service conditions, specifically: when the air conditioner is not turned on and the vehicle-mounted multimedia equipment is not turned on, taking delta to be 0.95; when the vehicle-mounted multimedia equipment is turned on but the air conditioner is not turned on, taking delta to be 0.9; when the vehicle-mounted air conditioner is turned on but the vehicle-mounted multimedia equipment is not turned on, taking delta to be 0.8; when the air conditioner is turned on and the vehicle-mounted multimedia equipment is turned on, taking delta to be 0.75; and sends the value of δ to the on-board computing unit.
Step 2.4: some parameter information of car battery and motor are stored in the on-vehicle storage module in the shared car information acquisition module, include: average discharge efficiency η of batteryqMotor and controller efficiency etamcVehicle dead weight m, and motor transmission efficiency ηr. And the vehicle-mounted storage module sends the information to a vehicle-mounted computing unit through a CAN bus.
Step 2.5: the vehicle-mounted computing unit receives the automobile acceleration a, the road gradient alpha and the battery residual capacity E in real timeBTRunning energy coefficient delta, and battery average discharge efficiency etaqMotor and controller efficiency etamcAnd motor transmission efficiency etarAccording to the formula
To calculate the driving mileage S of the automobiletThe vehicle-mounted computing unit calculates the driving mileage StAnd sending the data to a server storage module in real time.
And (3) controlling and judging links:
and step 3: the server storage module is used for receiving the trip automobile c from the mobile phone cliente(e ═ 1,2.. n), and destination charging pile ak(k ═ 1,2.. n), route BmAnd (m is 1,2 and 3), and information such as St received from the shared automobile information acquisition module is sent to the server monitoring module.
And 4, step 4: the server monitoring module receives the shared automobile endurance mileage StIs multiplied by a safety factor of 0.8 and 0.8S is multipliedtSending the data to a server control module; simultaneously calculating in real time on route BmUpper ceTo akDistance to be traveled RtAnd R istSending the data to a server control module; monitoring with ceAs a center of circle, StCharging pile a in radius rangei(i ═ 1,2.. n) to ceDistance L ofi(i ═ 1,2.. n), and mixing LiMinimum value of LminAnd corresponding charging pile ajThe location of (j ═ 1,2.. n) is sent to the server control module.
And 5: the server control module multiplies the driving mileage of the safety factor by the received driving mileage of 0.8StAnd the distance L to the nearest charging pile in the driving processminAnd in the selected route BmDistance remaining on travel RtThe size relation between the two is that different instructions are sent to the mobile phone client, specifically when the instruction is 0.8StGreater than or equal to LminWhen it is determined that R is presenttIf R is 0, iftIf not 0, returning to the step 4, if R is not 0tIs 0, then the user is at akReturning the vehicle and finishing driving; when 0.8StLess than LminJudging whether j and k are equal, if j is equal to k, judging RtIf R is 0, iftIf not 0, returning to the step 4, if R is not 0tIs 0, then the user is at akReturning the vehicle and finishing driving; if j is not equal to k, thenThe mobile phone client sends alarm information to remind a user of driving to the nearest charging pile a in timejIs charged at ajAnd (5) changing one vehicle for relay driving, and then returning to the user selection link.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.