KR20110061374A - Method for navigating fuel efficient route for reducing fuel consumption - Google Patents

Abstract

PURPOSE: A method of searching a fuel saving route for minimizing the consumption of fuel is provided to minimize fuel consumption by applying an acceleration/deceleration model according to fuel consumption by speed, average pass speed by the kind, length and link of a road, crossroad pass and the kind of turn. CONSTITUTION: A method of searching a fuel saving route for minimizing the consumption of fuel is as follows. Fuel consumption by vehicle speed is calculated according to average pass speed by road link based on a fuel consumption table suitable for a vehicle(s110). The kind of road is selected according to the type of road to be run(s120). The length of road, link distance on a circular road is calculated(s130). Road running cost is calculated by multiplying of the fuel consumption by vehicle speed, the kind of road and the road length(s140). Crossroad extra additional-cost due to crossroad additional-fuel-consumption is calculated by applying an acceleration/deceleration model according to crossroad pass and the kind of turn.

Description

How to navigate fuel saving routes to minimize fuel consumption {Method for navigating fuel efficient route for reducing fuel consumption}

The present invention relates to a fuel-saving route of a vehicle, and more specifically, to the fuel consumption by speed, road type, road length, road link average travel speed, application of acceleration and deceleration according to intersection and turn type, and real-time traffic information. The present invention relates to a fuel saving path search method capable of minimizing fuel consumption.

In the recent automobile industry, when a driver sits and looks at a liquid crystal panel mounted on a dashboard, a car navigation system is provided in which the current driving position is displayed along with a map on the liquid crystal panel to reach a destination.

This car navigation system makes it more comfortable for drivers who are inexperienced in the road situation or for those who are not familiar with geography. Each company's system includes a map of the entire world, and you can zoom in or out from a minimum of one hundred thousand to one tenth of a million at the touch of a button. In addition, the map contains not only roads, but also indications of service points and rest areas on the highways and various public facilities.

For example, a car navigation system using GPS uses a GPS receiver installed in a car to receive a radio wave from a satellite, locate the current position of the car, and display it on a map so that the driver can safely reach the destination. do.

The navigation system using GPS according to the related art calculates and displays the shortest distance irrespective of the road consumption of the route and the fuel consumption according to the curvature of the road when calculating and displaying the route corresponding to the destination to go. The disadvantage is that fuel consumption increases with driving.

On the other hand, to solve this problem, Korean Patent Application No. 1994-19119 (Application Date: August 16, 1994) discloses the invention named "navigation system for selecting the driving route according to the fuel consumption", It demonstrates concretely with reference to 1.

1 is a flowchart illustrating an operation sequence of a navigation system for selecting a driving route according to a fuel consumption amount according to the related art.

Referring to FIG. 1, in the navigation system for selecting a driving route according to a fuel consumption amount according to the related art, as illustrated in steps S11 to S24, when a destination to be set by a driver is set, the current position is determined and the current position. All routes to the destination are calculated, and the contour data and traffic conditions corresponding to each route can be read to select and display the route with the least fuel consumption considering the contour data, road conditions, signal waiting, and the like.

In addition, US Patent Publication No. 2008-133120 discloses an invention entitled "Method for Determining and Outputting Driving Instructions for the Best Fuel Efficiency Path" as related technology, which will be described in detail with reference to FIG. .

2 is an operational flow diagram illustrating a process of providing a fuel efficiency driving instruction using a data processing system according to the prior art.

As shown in FIG. 2, according to a process of providing a fuel efficiency driving instruction using a data processing system according to the related art, a user searches for a destination and a 'most fuel efficient route' according to steps S31 to S42. If you select, the fuel consumption according to the model and year of the vehicle, the characteristics of the size and weight of the vehicle, the frequency of use of the vehicle, the type and price of the fuel used, the presence or absence of the hybrid vehicle and the engine size, the traffic lights, traffic volume, driving The most fuel efficient route is determined and output in consideration of information such as time, road surface information, speed limit information, slope, and average speed.

However, since the methods according to the prior art do not apply the acceleration / deceleration models according to fuel consumption by speed, road type, road length, road link average travel speed, intersection passage and turn type, fuel can minimize fuel consumption. There is a problem that it cannot be called a saving path search method. In particular, in the case of a vehicle to which the recent STOP & Go system is applied, an acceleration / deceleration model according to an intersection passing and a turn type has to be applied.

The technical problem to be solved by the present invention for solving the above problems, the fuel consumption by speed, road type, road length, average road speed by road link, intersection acceleration and deceleration model application according to the type of turn, real-time traffic information It is to provide a fuel saving path search method that can minimize the fuel consumption in consideration of such.

As a means for achieving the above-described technical problem, a fuel saving path search method that can minimize the fuel consumption according to the present invention, a) on the average speed of traffic for each road link based on the fuel consumption table corresponding to the vehicle to be driven Calculating fuel consumption for each vehicle speed accordingly; b) selecting a road type according to the driving road type; c) calculating a road length that is a link length on a circle; d) calculating a road running cost by multiplying the fuel consumption for each vehicle speed, the road type and the road length, respectively; e) calculating the intersection additional cost according to the intersection additional fuel consumption by applying the acceleration / deceleration model according to the intersection passage and the turn type; And f) calculating the route search cost by adding the road driving cost and the intersection additional cost, and selecting a fuel saving route based on the route search cost, wherein steps a) to f) are traffic congestion. The route is searched according to the night evaluation avoiding time.

In addition, the fuel saving path search method that can minimize the fuel consumption according to the invention, g) receiving the real-time traffic information to check the avoidance path to reflect the congestion path avoidance path, the fuel saving path reflecting the avoidance path The method may further include selecting.

Here, the step g) is characterized in that the route is searched according to the daytime evaluation reflecting traffic congestion and general road conditions.

Here, the average road speed for each road link in step a) is classified into eight grades as a speed category value of raw data.

Here, the road type of step b) may be divided into a highway, a national road, a city road, or a road depending on the type of driving road.

Here, the additional cost of the intersection of the step e) is calculated through the Stop & Go modeling to model the fuel consumption before and after deceleration speed and deceleration section / aerospace / acceleration section.

According to the present invention, fuel consumption can be minimized by considering fuel consumption by speed, road type, road length, average link speed by road link, acceleration / deceleration model according to intersection and turn type, and real-time traffic information. have.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

As an embodiment of the present invention, fuel consumption by speed, road type, road length, road link, average travel speed, intersection acceleration, acceleration and deceleration model application according to the type of turn, and real-time traffic information may be minimized to minimize fuel consumption. A fuel routing method can be provided.

3 is a view illustrating a fuel saving verification path in the fuel saving path search method according to an embodiment of the present invention, Figure 4 illustrates a tuning path of the verification path reference in the fuel saving path search method according to an embodiment of the present invention. It is a figure.

The fuel saving verification path of FIG. 3 represents a fuel saving verification path in which actual vehicle fuel consumption measurement is confirmed on the actual map 110, and the tuning path based on the verification path of FIG. 4 is the same path as the verification path on the navigation system screen 120. The search cost represents the tuning path.

The fuel saving path search method according to an embodiment of the present invention is a diagram illustrating the generation of the ten lowest fuel consumption paths by driving the routes searched by various navigation systems in actual Europe. For example, the distance and itinerary required to acquire 10 standard paths was about 3,000 km and 1 month, and all the factors that can be used for path search to implement the same path logic as those 10 standard paths were analyzed. It was.

As a result of this analysis, fuel consumption tends to decrease with shorter paths (average 27% savings compared to fast), but this is not the case in all cases. In the vehicle environment, the fuel consumption measurement equipment can confirm the actual fuel saving effect.

On the other hand, Figure 5 is a flow chart of the fuel saving path search method that can minimize the fuel consumption according to an embodiment of the present invention.

First, in the fuel saving path search method that can minimize the fuel consumption according to an embodiment of the present invention, consideration factors for the implementation of the fuel saving path is the fuel consumption table, road type, road length, average travel speed for each road link, STOP & GO modeling and real-time traffic information. The consideration factor is converted into fuel consumption on the basis of the fuel consumption table, and then used for path searching.

Referring to FIG. 5, a fuel saving path search method capable of minimizing fuel consumption according to an exemplary embodiment of the present invention may include a vehicle according to a traffic average speed for each road link based on a fuel consumption table corresponding to a vehicle to be driven. The fuel consumption for each speed is calculated (S110). The fuel consumption table is to use the fuel consumption for each speed as the route search cost, and the average passage speed for each road link may be classified into eight grades as a speed category value of raw data.

Next, the road type according to the driving road type is selected (S120). In this case, the road type may be divided into a highway, a national road, a city road, or a road depending on the type of driving road.

Next, the road length which is the link length on the circular road is calculated (S130).

Next, the road driving cost is calculated by multiplying the fuel consumption for each vehicle speed, the road type, and the road length, respectively (S140).

Next, the intersection additional cost is calculated according to the intersection additional fuel consumption by applying the acceleration / deceleration model according to the intersection passing and the turn type (S150). That is, the intersection additional cost may be calculated through Stop & Go modeling in order to model the speed before deceleration, the speed after acceleration, and fuel consumption per deceleration section / aerospace / acceleration section.

Next, the route search cost is calculated by adding the road driving cost and the additional intersection cost, and a fuel saving route is selected based on the route search cost (S160).

Next, the evacuation path is checked to receive the real-time traffic information to reflect the congestion section avoidance path (S170), and then, the fuel saving path reflecting the avoidance path is selected (S180).

Here, the steps S110 to S160 are to search the route according to the night evaluation avoiding the traffic jam time, and the steps S170 and S180 are to search the route according to the daytime evaluation reflecting traffic congestion and general daytime road conditions. Can be.

6 is a view illustrating a fuel consumption table according to an embodiment of the present invention, Figure 7 is a view showing the fuel consumption according to the speed according to an embodiment of the present invention, Figure 8 is an embodiment of the present invention Are diagrams illustrating fuel consumption according to slopes.

As shown in FIG. 6, the fuel consumption table may be converted into fuel consumption based on the fuel consumption table, and may be used for path searching. As shown in FIG. 7, the fuel consumption according to the speed is reduced to about 50km, and then 50km. As the speed increases, fuel consumption increases. In addition, as shown in FIG. 8, the fuel consumption according to the slope indicates that the slope increases.

On the other hand, Figure 9 is a view showing the evaluation results by the fuel saving path search method that can minimize the fuel consumption according to an embodiment of the present invention.

FIG. 9 shows evaluation results for vehicles with YN P1 (diesel 1.4, M / T) subject to fuel full, road limit speed compliance, rapid acceleration / braking / shift elimination, and A / C 20 degree 1 st stage maintenance. Table that represents. In addition, the route is an ideal case evaluation that avoids traffic jam time divided into Fast, Short, and Eco routes, and it is an evaluation that reflects the traffic congestion and general daytime road conditions at 11 am to 3 am, and it is 8 am It is divided into weekly evaluation of 2 pm.

As a result of the evaluation, local verification of the feasibility of the fuel saving path was confirmed, and the effect of reducing fuel consumption was confirmed, and the result of the route search that excludes excessive altitude difference and Stop & Go (intersection traffic light) compared to the fast / short path can be confirmed.

Therefore, in the night evaluation result, the reduction of about 48% compared to the fast may be a little different from the actual driving conditions as the ideal driving result.In the weekly evaluation, the result of about 10% reduction compared to the fast is the estimated fuel saving path target. Similar to about 5-10%.

On the other hand, Figure 10a to 10d is a view showing an experimental apparatus for searching for a fuel saving path that can minimize the fuel consumption according to an embodiment of the present invention.

Referring to FIG. 10A, the fuel measurement monitoring equipment 210 shows a fuel measurement time required 211, a real time fuel consumption 212, and a cumulative (total) fuel consumption 213, respectively. In addition, reference numeral 230 of FIG. 10b denotes a control unit of the fuel measuring equipment, and reference numerals 230 and 240 of FIGS. 10c and 10d denote a method of directly measuring a flow rate transmitted from the fuel tank to the engine, where a third Measure up to the unit.

11A and 11B are diagrams illustrating nighttime evaluations measured by a fuel saving path search method capable of minimizing fuel consumption according to an exemplary embodiment of the present invention.

In the night evaluation measured by the fuel saving path search method capable of minimizing fuel consumption according to an embodiment of the present invention, FIG. 11A shows the results measured in the fast path, the eco path, the reverse fast path, and the reverse eco path, respectively. In addition, as illustrated in FIG. 11B, the fast route 311, the short route 312, and the eco route 313 are displayed on the navigation system screen 310, respectively.

12A and 12B are diagrams illustrating weekly evaluations measured by a fuel saving path search method capable of minimizing fuel consumption according to an exemplary embodiment of the present invention.

In the weekly evaluation measured by the fuel saving path search method capable of minimizing fuel consumption according to an embodiment of the present invention, FIG. 12A illustrates the fast path, the short path and the eco path, and as shown in FIG. 12B. , Fast Route 321, Short Route 322, and Eco Route 323 are displayed on the navigation system screen 320, respectively.

After all, according to the fuel saving path search method that can minimize the fuel consumption according to an embodiment of the present invention, according to the fuel consumption by speed, road type, road length, average road speed by road link, intersection passage and turn type Fuel consumption can be minimized by considering acceleration / deceleration model and real-time traffic information.

The description of the present invention is for the purpose of illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

1 is a flowchart illustrating an operation sequence of a navigation system for selecting a driving route according to a fuel consumption amount according to the related art.

2 is an operational flow diagram illustrating a process of providing a fuel efficiency driving instruction using a data processing system according to the prior art.

3 is a view illustrating a fuel saving verification path in the fuel saving path search method according to an embodiment of the present invention.

4 is a diagram illustrating a tuning path based on the verification path in the fuel saving path search method according to an embodiment of the present invention.

5 is an operation flowchart of a fuel saving path search method capable of minimizing fuel consumption according to an exemplary embodiment of the present invention.

6 is a diagram illustrating a fuel consumption table according to an embodiment of the present invention.

7 is a view showing fuel consumption according to speed according to an embodiment of the present invention.

8 is a view showing fuel consumption according to a slope according to an embodiment of the present invention.

9 is a view showing an evaluation result by the fuel saving path search method that can minimize the fuel consumption according to an embodiment of the present invention.

10A to 10D are diagrams illustrating an experimental apparatus for searching for a fuel saving path capable of minimizing fuel consumption according to an embodiment of the present invention.

11A and 11B are diagrams illustrating night evaluation measured by a fuel saving path search method capable of minimizing fuel consumption according to an exemplary embodiment of the present invention.

12A and 12B are diagrams illustrating weekly evaluations measured by a fuel saving path search method capable of minimizing fuel consumption according to an exemplary embodiment of the present invention.

Claims (6)

a) calculating fuel consumption for each vehicle speed according to the average speed of traffic for each road link based on the fuel consumption table corresponding to the vehicle to be driven; b) selecting a road type according to the driving road type; c) calculating a road length that is a link length on a circle; d) calculating a road running cost by multiplying the fuel consumption for each vehicle speed, the road type and the road length, respectively; e) calculating the intersection additional cost according to the intersection additional fuel consumption by applying the acceleration / deceleration model according to the intersection passage and the turn type; And f) calculating the route search cost by adding the road driving cost and the additional intersection cost, and selecting a fuel saving route based on the route search cost. Including, Steps a) to f) is a fuel saving route search method for minimizing fuel consumption, characterized in that the route is searched according to the night evaluation avoiding traffic jams. The method of claim 1, g) receiving the real-time traffic information and checking the avoidance route to reflect the congestion route avoidance route, and selecting a fuel saving route that reflects the avoidance route, and further reducing fuel consumption paths that can minimize fuel consumption. . The method of claim 2, The step g) is a fuel saving route search method for minimizing fuel consumption, characterized in that the route is searched according to the weekly evaluation reflecting traffic congestion and general daytime road conditions. The method of claim 1, The average passage speed for each road link in step a) is classified into eight grades as a speed category value of the raw data, and the fuel consumption path searching method for minimizing fuel consumption. The method of claim 1, The road type of step b) is a fuel saving path search method for minimizing fuel consumption, characterized in that divided into highways, national roads, urban roads or roads according to the type of driving road. The method of claim 1, The additional cost of the intersection of step e) can be minimized through the Stop & Go modeling to model the fuel consumption before and after deceleration, and the fuel consumption by decelerating section / aerospace / acceleration section. How to navigate fuel economy.

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