KR101886516B1 - Route guidance method of navigation - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a route guidance method for health care of a navigation system for providing guidance for helping to maintain indoor air clean, The present invention provides a route guidance method for a healthcare of a navigation system that implements navigation route guidance that helps to keep indoor air clean by controlling operations.

Description

Route guidance method of navigation < RTI ID = 0.0 >

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a route guidance method for a healthcare of a navigation system, and more particularly, to a route guidance method for a healthcare of a navigation system for providing guidance for helping to keep indoor air clean.

Recently, as the social interest in the harmfulness of fine dust increases, information on atmospheric fine dust concentration is being provided through the mass media.

In addition, since the dust accumulated on the road surface is liable to be re-scattered due to running of the vehicle and running wind caused by the vehicle in the case of the vehicle traveling road, the concentration of the fine dust in the atmosphere tends to deteriorate, The road cleaning cycle is adjusted based on the data to prevent deterioration of the road environment due to fine dust.

On the other hand, the automobile is equipped with an air conditioner for keeping the interior of the vehicle clean. When the vehicle interior air is to be ventilated while driving, the air outside the vehicle is introduced into the vehicle interior by the wind or blower.

Although the air conditioner includes an air filter for filtering the dust introduced into the room together with the outside air when the air outside the vehicle is introduced into the passenger compartment of the vehicle, Is practically impossible, it is advantageous to prevent the deterioration of the indoor air quality of the vehicle by running in a possible road environment.

However, the conventional navigation system does not provide the guidance for the shortest travel route, the shortest travel time, and the like, but provides guidance for improving the cleanliness of the indoor air.

Korean Patent Publication No. 10-2015-0064394 (June 11, 2015)

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a navigation system that can realize navigation route guidance that helps maintain indoor air clean by controlling navigation operation for route guidance using road re- The present invention provides a method of guiding a route for the healthcare of a patient.

In accordance with an aspect of the present invention, there is provided a method of searching for a route, the method comprising: a first step of searching for a travel time minimum route satisfying a shortest travel time to a destination; A second step of calculating a predicted total micro-dust inflow amount (T) predicted to be introduced into the passenger compartment while traveling along the travel time minimum path based on the road re-dispersion dust concentration data; When the estimated total micro-dust inflow amount T exceeds the target total inflow amount [alpha] set as a threshold for keeping indoor air clean, the new travel time minimum path is reconfigured by changing the travel time minimum path to the destination And a third step of guiding the route for the healthcare of the navigation system.

Specifically, the second step may include the steps of: a) dividing the movement time minimum path of the first step into a plurality of small diameter paths; b) calculating a predicted inflow amount (Dx) of fine dust by the small-diameter path based on the re-scattered dust concentration data by the small-diameter path of the minimum travel time; c) calculating an estimated total micro-dust inflow (T) of the travel time minimum path by summing up the expected dust inflow amount (Dx) of the small-diameter furnace,

In the step b), the predicted inflow amount Dx of the fine dust by the small diameter route is calculated by the following equation 1,

(1 - k) (x = 1, 2, 3, ..., n)

Mx is the re-scattering dust concentration value by the small-diameter path, and k is a dust removal rate of the air filter provided in the vehicle air conditioner, and has a value between 0 and 1. And, n is the total number of the small-diameter roads constituting the minimum travel time.

In the step c), the estimated total micro-dust inflow T of the movement time minimum path is calculated through the following equation (2).

Equation 2:

Vx is the predicted moving speed of the small-diameter road constituting the minimum travel time, Hx is the expected travel time of each small-diameter road constituting the minimum travel time, and n is the estimated travel time of the small- The total number.

The third step may include the steps of: a) determining whether or not the predicted inflow amount Dx of the fine dust among the plurality of small-diameter roads constituting the minimum movement time path of the first step is greater than a target Removing the small-diameter path exceeding the inflow amount? From the path re-search target; b) searching for a new small diameter path which can replace the small diameter path deleted in the step a) and which satisfies the estimated fine dust inflow amount (Dx) of the target inflow amount (?) or less; c) reconfiguring a new travel time minimum path to the destination by connecting a new small-diameter route of step b) between the front small-diameter road and the backward small-diameter road of the small-diameter road deleted in step a).

If it is determined that the estimated total micro-dust inflow T in the second step is less than the target total inflow amount?, The microcomputer starts route guidance according to the minimum travel time of the first step, The route guide is started in accordance with the new travel time minimum route in the third step when the estimated minute microfine inflow T ', which is predicted to flow into the vehicle interior while traveling on the route, is less than the target total inflow amount?.

According to the present invention, it is possible to precisely estimate the concentration of fine dust outside the vehicle by utilizing the road re-dispersion dust concentration data, and to provide a guidance on a healthcare viewpoint in which an outer fine dust environment is preferable to a destination, The amount of dust is reduced, thereby maintaining the cleanliness of the indoor air of the vehicle and helping the health of the passengers.

1 is a flowchart showing a route guidance method for health care of navigation according to the present invention.
2 is a view for explaining a route guidance method for health care of navigation according to the present invention;

Hereinafter, the present invention will be described with reference to the accompanying drawings.

The present invention relates to a navigational route guidance method that helps passengers to manage health, and more particularly to a navigation navigation system for navigating a destination to a destination by utilizing road re-scattering dust concentration data, Allow the driver to provide helpful navigation directions.

For this purpose, reliable and effective road re-arid dust concentration data is acquired and an optimal path for guiding the healthcare viewpoint can be constructed by accurately estimating the concentration of fine dust outside the vehicle from the starting point to the destination , The control process for such an optimal path configuration can be performed by the navigation control unit that controls the overall operation of the navigation.

Road rebuild dust is a sub-component that can affect atmospheric fine dust concentration, and dust accumulated on the road surface is generated by being scattered back to the atmosphere on the road due to driving and wind of the vehicle, and road construction and road In some cases, a large amount of road dust is re-scattered due to nearby construction work.

As the road re-dispersed dust concentration data, real-time data obtained by measuring the concentration of road dust scattered by various causes including the vehicle on the road is used.

For example, it is possible to acquire and utilize road re-dusting concentration data measured by the Korea Environment Corporation. In order to adjust the road cleaning period, the Korea Environment Corporation (KEPAC) has constructed a vehicle to measure the concentration of road re-dusting dust in real time, measures the concentration of road re-dusting for several hours during one run, And the road re-dispersed dust concentration data is constructed by calculating the road re-dispersed dust concentration by section in real time.

The concentration of fine dust in the interior and exterior of the vehicle is substantially more influenced by the amount of road re-dusting dust than the concentration of atmospheric fine dust indicating the approximate dust concentration around the city, and the atmospheric fine dust concentration measured at the high- The concentration of road re-dispersed dust measured in close proximity to each other varies depending on environmental conditions.

Therefore, in the present invention, it is possible to accurately estimate the concentration of the fine dust outside the vehicle to the destination by utilizing the road re-dispersion dust concentration data, to quantitatively calculate the expected inflow amount of the fine dust in the vehicle interior, By providing route guidance that minimizes vehicle interior contamination due to dust entry, the vehicle can be prevented from being exposed to outside air contaminated with high concentrations during traveling to a destination.

Hereinafter, with reference to FIG. 1, a description will be given of a route guidance method of navigation for helping the health care of a passenger.

As shown in FIG. 1, when the vehicle is turned on and power is supplied to the navigation system, the navigation controller determines whether the navigation system is operating in the healthcare mode (S10).

When the driver selects the healthcare mode of the navigation, the guidance of the healthcare aspect using the road re-scattering dust concentration data is provided, and if the healthcare mode is not selected, the general road guidance not utilizing the road re- / RTI >

When navigating a general route, navigation searches for the minimum travel time that can minimize travel time from the origin to the destination (destination) and provides it to the driver immediately.

When navigating the healthcare viewpoint, navigation first searches for a minimum travel time path that minimizes the travel time to the destination, and then searches for a minimum travel time path that satisfies the shortest travel time from the origin point to the destination (S11). The micro-dust estimated inflow T is estimated based on the road re-disperse dust concentration data, which is predicted to flow into the vehicle interior while traveling along the travel time minimum path (S14).

When navigation is operated in the healthcare mode, when the search of the travel time minimum route to the destination is completed, validity is verified for the travel time minimum route from the road re-scattering dust concentration data provider (for example, Korea Environment Corporation) Thereby acquiring the road re-dispersion dust concentration data.

The road re-scattering dust concentration is measured for each travel distance determined based on the location information of the map of the GSPS.

In order to calculate the total estimated inflow amount of fine dust in the interior of the vehicle, the traveling time minimum path (entire traveling section from the starting point to the destination) satisfying the shortest traveling time to the destination is set to a moving distance (S12), and the road re-scattering dust concentration measured at the position included in each of the small-diameter roads is divided into a plurality of small-diameter roads It is determined as the re-scattering dust concentration.

That is, the road re-dispersed dust concentration value measured at the positions included in the respective small-diameter passages is the road re-scattering dust concentration value of the corresponding small-diameter road, based on the position information of the GPS map.

At this time, the road re-disperse dust concentration data is obtained by receiving the most recently updated data in real time.

Next, the indoor fine dust inflow amount Dx for each of the small diameter roads constituting the travel time minimum path is calculated (S13) based on the re-scattering dust concentration Mx for each of the small diameter roads, Dx) can be calculated as shown in Equation 1 below.

(1 - k) (x = 1, 2, 3, ..., n)

Here, Mx is a re-scattering dust concentration value by the small-diameter road constituting the minimum travel time, and k is a dust removal rate of the air filter provided in the vehicle air conditioner, and has a value between 0 and 1. And, n is the total number of the small-diameter roads constituting the minimum travel time.

Specifically, the predicted inflow amount Dx of the indoor fine dusts by the small-diameter furnace is calculated (S13), and the estimated indoor inflow amount Dx of the indoor fine dusts by the small- The estimated total micro-dust inflow T can be calculated as shown in the following Equation 2 at step S14, while the traveling time minimum path to the destination is calculated.

Equation 2:

Herein, Vx is a predicted vehicle traveling speed for each of the small-diameter roads constituting the minimum travel time, Hx is the expected travel time for each of the small-diameter roads constituting the minimum travel time, n is the small- Lt; / RTI >

The predicted vehicle traveling speed Vx by the small-diameter pass is obtained by multiplying the current driving vehicle speed value by which the predicted total inflow amount T of fine dusts is calculated or the value inputted by the driver in real time, The corrected value may be applied.

The expected travel time (Hx) for each of the small-diameter roads is a value obtained by dividing the total travel time required to travel to the destination along the minimum travel time path by the total number of the small-diameter roads. Value may be applied.

The estimated total dust inflow amount T is compared with the set target total inflow amount alpha at step S15 and if the estimated fine dust inflow amount T is less than the target total inflow amount? (S16), and reconstructs a new travel time minimum path from the departure point to the destination when the estimated fine particle inflow amount T exceeds the target total inflow amount [alpha].

The target total inflow amount? Is set as a threshold value of the estimated total dust inflow amount T for keeping the air in the vehicle clean while traveling from the start point to the destination, and can be derived through preliminary testing and evaluation .

Therefore, when the estimated total micro-dust inflow amount T is calculated as a value equal to or less than the target total inflow amount?, It is predicted that the vehicle can be driven to the destination while keeping the indoor air clean during traveling along the minimum travel time. Determines the time minimum path as an optimal path for guiding the route to the destination and performs the route guidance according to the minimum travel time.

The target total inflow amount? Is set differently according to the type of the vehicle because it varies depending on the type of the vehicle segment, the type of the vehicle, the size of the cabin of the vehicle, the human hazards of the fine dust, It is advantageous in keeping the air pleasant and clean.

In addition, the target total inflow amount [alpha] may be set as a corrected value by further utilizing health information such as physical condition, biorhythm, condition, etc. of the passenger, and when the number of passengers is large, The total inflow amount [alpha] can be corrected.

Further, when the estimated total micro-dust inflow T is calculated as a value exceeding the target total inflow amount [alpha], the indoor air is cleaned at the time of traveling along the previous travel time minimum path (minimum travel time before reconfiguration) It is determined that it is difficult to maintain, and a new travel time minimum path is reconstructed as an optimum expected route to the destination.

In order to reconstruct the new travel time minimum route, first, the estimated minute inflow amount Dx of the small roads constituting the previous travel time minimum route (see the route of a + b + c in FIG. 2) (See section b in FIG. 2) in which the estimated fine inflow amount Dx of the plurality of small diameter roads constituting the previous travel time minimum path exceeds the target inflow amount? It is excluded from the configuration of the minimum path (S17).

The target inflow amount beta is set as a threshold value of the estimated fine dust inflow amount Dx for keeping indoor air clean while driving on the small-diameter road between the start point and the destination, .

Therefore, in the case of the small diameter path (b) in which the predicted inflow amount of fine dust (Dx) exceeds the target inflow amount (?), The air pollution in the vehicle interior due to the fine dust inflow is predicted. / Exclude the optimal estimated path (new travel time minimum path) by excluding it.

In addition, it is possible to replace the small-diameter path (b) deleted in the vicinity of the deleted small-diameter path (b), that is, to connect the front small path (a1) directly connected to the front side of the deleted small path A new small diameter path b 'that can be connected between the rear small diameter path c1 and the estimated minute inflow amount Dx' that is equal to or smaller than the target inflow amount β is searched at S18.

Next, the new small-diameter path b 'is connected between the front small-diameter path a1 and the rear small-diameter path c1 to obtain a new moving time minimum path (see path reference of a + b' + c in Fig. 2) (S19).

In the case of the previous travel time minimum route (see the route of a + b + c in FIG. 2), the traveling time to the destination is shortened but the estimated fine inflow amount Dx is disadvantageous. , A new travel time minimum path (see the path of a + b '+ c in FIG. 2) including a new small-diameter path b' with a relatively favorable fine dust inflow amount Dx ' Reorganize.

The total vehicle inflow amount T 'of the vehicle interior at the new travel time minimum path (a + b' + c in FIG. 2) is calculated using the equation 2 described above (S20) The navigation path guidance is performed according to the new travel time minimum route if the vehicle interior fine dust inflow amount T 'is equal to or less than the target total inflow amount [alpha] (S22) .

If the estimated total micro-dust inflow T 'of the new travel time minimum path is calculated as a value exceeding the target total inflow amount alpha, the estimated micro-dust inflow T' is less than or equal to the target total inflow amount? The optimal path is re-searched and reconstructed.

Thus, by quantifying the estimated total inflow amount T of the vehicle interior dust by utilizing the road re-scattering dust concentration data, it is possible to provide the driver with the optimum anticipated route (or the health care route) which is advantageous for keeping indoor air clean, As a result, it provides guidance on the healthcare point of view that helps the passengers' health care, thereby improving the vehicle's merchantability.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. Modifications are also included in the scope of the present invention.

Claims (7)

A first step of searching a travel time minimum path satisfying a shortest travel time to a destination;
A second step of calculating a predicted total micro-dust inflow amount (T) predicted to be introduced into the passenger compartment while traveling along the travel time minimum path based on the road re-dispersion dust concentration data;
When the estimated total micro-dust inflow amount T exceeds the target total inflow amount [alpha] set as a threshold for keeping indoor air clean, the new travel time minimum path is reconfigured by changing the travel time minimum path to the destination And a third step of,
The second step comprises:
a) dividing the movement time minimum path of the first step into a plurality of small diameter paths;
b) calculating a predicted inflow amount (Dx) of fine dust by the small-diameter path based on the re-scattered dust concentration data by the small-diameter path of the minimum travel time;
c) calculating an estimated total micro-dust inflow (T) of the minimum travel time travel path by summing up the expected dust inflow amounts (Dx) of the small-diameter routes,
Wherein the estimated fine dust inflow amount Dx for each of the small passages is calculated through the following equation 1 in the step b).
(1 - k) (x = 1, 2, 3, ..., n)
Mx is the re-scattering dust concentration value by the small-diameter path, and k is a dust removal rate of the air filter provided in the vehicle air conditioner, and has a value between 0 and 1. And, n is the total number of the small-diameter roads constituting the minimum travel time.
delete delete The method according to claim 1,
Wherein the estimated total micro-dust inflow T of the travel time minimum path is calculated through the following Equation 2 in the step c).
Equation 2:

Vx is the predicted moving speed of the small-diameter road constituting the minimum travel time, Hx is the expected travel time of each small-diameter road constituting the minimum travel time, and n is the estimated travel time of the small- The total number.
2. The method of claim 1,
a) determining whether or not the predicted inflow amount Dx of fine dust among the plurality of small-diameter roads constituting the travel time minimum path in the first step exceeds a target inflow amount? set as a threshold value for keeping indoor air clean, Removing the path from the path re-search target;
b) searching for a new small diameter path which can replace the small diameter path deleted in the step a) and which satisfies the estimated fine dust inflow amount (Dx) of the target inflow amount (?) or less;
c) reconfiguring a new travel time minimum path to the destination by connecting a new small-diameter road of step b) between the front small-diameter road and the backward small-diameter road of the small-diameter road deleted in step a);
Wherein the route guidance method comprises the steps of:
The method according to claim 1,
And when the micro dust estimated inflow amount T in the second step is less than or equal to the target total inflow amount alpha, the route guiding is performed according to the minimum travel time travel path in the first step. .
The method according to claim 1,
If the estimated minute micro-dust inflow amount T 'predicted to flow into the passenger compartment while traveling on the new travel time minimum path in the third step is less than the target total inflow amount? Wherein the route guidance is performed in accordance with the navigation information.

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