CN102519474B - A kind of method and system of intelligent navigation - Google Patents

Abstract

The invention discloses a method and system for intelligent navigation. The method includes: obtaining the speed of driving in real time; determining the speed range where it is located according to the speed; searching for the corresponding display ratio according to the speed range to automatically determine the navigation The corresponding scale of the map; the navigation device automatically displays the navigation map according to the scale. The present invention calculates the speed range according to the real-time vehicle speed obtained by setting a reaction time, and determines the scale of the corresponding navigation map. When passing through an intersection, the scale of the appropriate navigation map can be adjusted automatically in real time according to the vehicle speed, allowing users enough reaction time to make a correct driving judgment on the intersection ahead, avoiding the occurrence of detours at the intersection, and convenient to use and the invention is simple and easy to implement, the development cost is very low, and it is suitable for large-scale production and use.

Description

Method and system for intelligent navigation

technical field

The invention relates to the field of intelligent navigation, in particular to an intelligent navigation method and system.

Background technique

As the urban road network becomes more and more complex, navigation maps are used more and more. However, during the use process, due to the fixed scale of the customer, it is easy to miss the intersection, which causes the owner to miss the intersection on the highway. You can only walk a longer way around.

The general map has been improved for this point, and the map intersection zoom function has been added. But at present, it only solves the problem of enlarging the intersection to a certain scale. If the speed of the vehicle is too fast or too slow, it still cannot effectively solve the above problems;

The scale in the map is made exactly according to the actual size, therefore, one of his scale units determines his driving distance. Suppose the map scale is 1:25m, which means that the length of a unit displayed on the map is 25m. If the actual speed of the consumer is 120km/h, the actual distance traveled by the car per second is about 33.33 meters. If the distance displayed on the map is only 5 If the scale is 1 unit, the response time for the map to consumers is only 25*5/33.33=3.75 seconds;

Therefore, if the consumer reaches 120km/h on the expressway, when the automatic intersection zooms in, the consumer has already missed this time, resulting in the problem of missing the intersection.

Therefore, the prior art still needs to be improved and developed.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method and system for intelligent navigation in view of the above-mentioned defects of the prior art. According to the vehicle speed information, the size of the map scale when the vehicle passes through the intersection is intelligently adjusted, and sufficient reaction time is given. It avoids the occurrence of the problem of missing the intersection and detour, and provides convenience for the user.

The technical solution adopted by the present invention to solve technical problems is as follows:

A method for intelligent navigation, including the steps of:

Get the speed of driving in real time;

According to the vehicle speed, determine the speed range where it is located, and search for the corresponding display scale according to the speed range, so as to automatically determine the corresponding scale of the navigation map;

The navigation device automatically displays the navigation map according to the scale.

In the method, the speed of the vehicle is acquired in real time before the vehicle reaches the intersection.

The method described above, wherein, according to the speed of the vehicle, determining its speed range, searching for the corresponding display scale according to the speed range, so as to automatically determine the corresponding scale of the navigation map specifically further includes: setting The required reaction time, according to the reaction time, determine the driving speed range, and then determine the navigation map scale corresponding to the speed range.

The method, wherein the reaction time is 20s;

The method, wherein, when the speed range of driving is 0-10km/h, the corresponding navigation map scale is 1:25m;

When the driving speed range is 10-30km/h, the corresponding navigation map scale is 1:50m;

When the driving speed range is 30-70km/h, the corresponding navigation map scale is 1:100m;

When the driving speed range is 70-140km/h, the corresponding navigation map scale is 1:200m;

When the driving speed range is above 140km/h, the corresponding navigation map scale is 1:400m;

An intelligent navigation system, including:

The vehicle speed acquisition module is used to obtain the vehicle speed of driving in real time;

The judging module is used to determine the speed range of the vehicle according to the vehicle speed acquired by the vehicle speed acquisition module, and search for the corresponding display scale according to the speed range, so as to automatically determine the corresponding scale of the navigation map;

The display module is used to automatically display the navigation map according to the scale of the navigation map determined by the judging module.

The device, wherein the judging module further includes:

The speed range setting unit is used to determine the speed range of driving according to the reaction time set by the system;

The scale setting unit is used to determine the corresponding navigation map scale according to the speed range determined by the speed range setting unit.

The device, wherein the reaction time is 20s.

The device, wherein,

When the driving speed range is 0-10km/h, the corresponding navigation map scale is 1:25m;

When the driving speed range is 10-30km/h, the corresponding navigation map scale is 1:50m;

When the driving speed range is 30-70km/h, the corresponding navigation map scale is 1:100m;

When the driving speed range is 70-140km/h, the corresponding navigation map scale is 1:200m;

When the driving speed range is above 140km/h, the corresponding navigation map scale is 1:400m;

The intelligent navigation method and system provided by the present invention acquire the vehicle speed in real time, determine the speed range according to the vehicle speed, and then determine the corresponding scale of the navigation map according to the speed range, and the navigation device automatically follows the scale. Displaying the navigation map can be adjusted to the appropriate navigation map scale according to the speed of the vehicle, giving consumers enough reaction time to avoid the problem of missing intersections and detours, which greatly provides convenience for users.

Description of drawings

Fig. 1 is a flowchart of a method for intelligent navigation according to an embodiment of the present invention.

Fig. 2 is a block diagram of the system structure of intelligent navigation according to the embodiment of the present invention.

Fig. 3 is a structural block diagram of a judging module in the intelligent navigation system according to an embodiment of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

This embodiment provides a method for intelligent navigation, as shown in Figure 1, including steps:

Step S100, obtaining the driving speed in real time. In this embodiment, the speed of the vehicle is acquired before the vehicle reaches the intersection. Since the speed of the vehicle is constantly changing, the acquisition of the speed of the vehicle needs to be performed in real time, so that the next intelligent navigation operation can be performed according to the speed of the vehicle.

Step S200, according to the vehicle speed obtained in step S100, determine its speed range, and search for the corresponding display scale according to the speed range, so as to automatically determine the corresponding scale of the navigation map.

When determining the speed range, a reaction time must be set first, and the speed range is calculated according to the reaction time. Before the driving reaches the intersection, there must be enough time for the vehicle to react to the intersection ahead. Since the driving itself has a certain speed, the reaction time should also be set according to the actual speed of the vehicle. In this embodiment , set the reaction time to 20s, use a 6.2-inch display screen, since the 6.2-inch display screen only has 4 scales to choose from, so combining the reaction time and vehicle speed, you can calculate the speed range and determine the corresponding navigation map scale.

The specific calculation results are shown in the following table:

Among them, the vehicle speed represents the actual speed of the vehicle, and the distance per second represents the actual distance traveled by the vehicle per second according to the real-time vehicle speed. The number 4 under the 6.2-inch screen means that the 6.2-inch display screen has only 4 scales to choose from. The number represents the reaction time required from the current position to the exit from the intersection according to the real-time speed of driving. Since the set reaction time is 20s, the time required to pass the intersection must be greater than 20s, so according to the data in the above table, you can It is concluded that the speed range of driving and the scale of the navigation map corresponding to the speed range are specifically:

When the driving speed range is 0-10km/h, the corresponding navigation map scale is 1:25m;

When the driving speed range is 10-30km/h, the corresponding navigation map scale is 1:50m;

When the driving speed range is 30-70km/h, the corresponding navigation map scale is 1:100m;

When the driving speed range is 70-140km/h, the corresponding navigation map scale is 1:200m;

When the driving speed range is above 140km/h, the corresponding navigation map scale is 1:400m.

Since the speed when driving through the intersection is usually not greater than 140km/h, scale 5 is an extreme case. The 6.2-inch screen only displays the first 4 scales, and the scale 5 is not displayed. The scale 5 is listed in the table only for calculation needs .

Because the reaction time is determined according to the situation of the driver, the reaction time is not limited to the 20s of this embodiment. For some novice drivers, the judgment of the road conditions may be slightly slower, and the corresponding reaction time can also be set. Make it longer, such as 25s, 30s, etc., depending on the actual situation of the user.

Step 300 , the navigation device automatically displays the navigation map according to the scale obtained in step 200 . The speed range and the corresponding navigation map scale are calculated by the system itself. If the response time is set to 20s as described above in this implementation, the corresponding navigation map scale will be determined. After obtaining the actual driving speed, the system will It will automatically judge the scale of the navigation map corresponding to the speed, and display the navigation map of this scale through the display screen. If the speed is 100km/h, the navigation map will be displayed on a scale of 1:200m.

Through the method of this embodiment, according to the actual speed of driving, the appropriate scale of the navigation map can be automatically adjusted, achieving intelligent judgment when driving through the intersection, and making the display of the navigation map more suitable for the needs of drivers.

Based on the above intelligent navigation method, the present invention also provides a system of intelligent navigation, as shown in Figure 2, comprising: a vehicle speed acquisition module 21, a judgment module 22 and a display module 23;

Wherein, the vehicle speed obtaining module 21 is used to obtain the vehicle speed of driving in real time;

The judging module 22 is used to determine the speed range of the vehicle according to the vehicle speed acquired by the vehicle speed acquisition module 21, and search for the corresponding display scale according to the speed range, so as to automatically determine the corresponding scale of the navigation map;

The display module 23 is configured to automatically display the navigation map according to the scale of the navigation map determined by the judging module 22 .

In the device described in the embodiment of the present invention, as shown in FIG. 3 , the judging module 22 further includes:

The speed range setting unit 221 is used to determine the speed range of driving according to the reaction time set by the system;

The scale setting unit 222 is configured to determine the corresponding navigation map scale according to the speed range determined by the speed range setting unit.

In summary, the intelligent navigation method and system provided by the present invention, by setting a reaction time, calculate the vehicle speed range according to the obtained real-time vehicle speed, and determine the scale of the corresponding navigation map, so that when driving through the intersection When driving, the scale of the appropriate navigation map can be adjusted in real time and automatically according to the speed of the vehicle, leaving enough time for the user to react and make a correct driving judgment on the intersection in front, so as to avoid the problem of missing the intersection and detour, which is convenient for the user. Use, and the invention is simple and easy to implement, the development cost is very low, and is suitable for large-scale production and use.

It should be understood that the application of the present invention is not limited to the above examples, and those skilled in the art can make improvements or transformations according to the above descriptions, and all these improvements and transformations should belong to the protection scope of the appended claims of the present invention.

Claims (2)

1. a method for intelligent navigation, is characterized in that, comprises step:

The speed of a motor vehicle of Real-time Obtaining driving;

According to the described speed of a motor vehicle, determine its place velocity range, search corresponding displaying ratio, automatically to determine the corresponding engineer's scale of navigation map according to described velocity range;

Guider uses the automatic show navigator map of the display screen of 6.2 cun according to described engineer's scale;

The speed of a motor vehicle of Real-time Obtaining driving before driving arrives crossing;

Described according to the described speed of a motor vehicle, determine its place velocity range, corresponding displaying ratio is searched according to described velocity range, automatically determine that the corresponding engineer's scale of navigation map specifically also comprises: the reaction time required before setting one driving arrives crossing, according to the described reaction time, determine the velocity range of driving a vehicle, and then determine the navigation map engineer's scale corresponding to described velocity range;

The described reaction time is arranged by the self-defined setting of driver or system default;

The described reaction time can be set as 20s according to the actual conditions of user;

When the velocity range of driving a vehicle is 0-10km/h, corresponding navigation map engineer's scale is 1:25m;

When the velocity range of driving a vehicle is 10-30km/h, corresponding navigation map engineer's scale is 1:50m;

When the velocity range of driving a vehicle is 30-70km/h, corresponding navigation map engineer's scale is 1:100m;

When the velocity range of driving a vehicle is 70-140km/h, corresponding navigation map engineer's scale is 1:200m;

When the velocity range of driving a vehicle is more than 140km/h, corresponding navigation map engineer's scale is 1:400m.

2. a system for intelligent navigation, is characterized in that, comprising:

Speed of a motor vehicle acquisition module, for the speed of a motor vehicle of Real-time Obtaining driving;

Judge module, for the speed of a motor vehicle obtained according to speed of a motor vehicle acquisition module, determines its place velocity range, searches corresponding displaying ratio, automatically to determine the corresponding engineer's scale of navigation map according to described velocity range;

Display module, the automatic show navigator map of the navigation map engineer's scale for determining according to judge module;

Described judge module also comprises:

Velocity range setting unit, for according to default or the reaction time by the self-defined setting of driver, determines the velocity range of driving a vehicle;

Engineer's scale setting unit, the velocity range for determining according to velocity range setting unit determines corresponding navigation map engineer's scale;

The described reaction time is set as 20s according to the actual conditions of user;

When the velocity range of driving a vehicle is 0-10km/h, corresponding navigation map engineer's scale is 1:25m;

When the velocity range of driving a vehicle is 10-30km/h, corresponding navigation map engineer's scale is 1:50m;

When the velocity range of driving a vehicle is 30-70km/h, corresponding navigation map engineer's scale is 1:100m;

When the velocity range of driving a vehicle is 70-140km/h, corresponding navigation map engineer's scale is 1:200m;

When the velocity range of driving a vehicle is more than 140km/h, corresponding navigation map engineer's scale is 1:400m.