CN104217601A - Vehicle control prompting method and vehicle control prompting system based on high-precision positioning - Google Patents

Abstract

The present invention provides a car control prompt method based on high-precision positioning, comprising the steps of: obtaining vehicle diversion request information, and obtaining the vehicle's current lane information, driving speed, position information after diversion, and speed limit information of the lane by using differential positioning ; Judging whether the driving speed is within the speed limit information of the lane, if not, issuing a warning. The invention is easy to operate, and can solve the problem of overspeeding caused by ignorance of the speed limit information of the lane when the vehicle changes lanes while driving on the expressway, or the problem of affecting the running of vehicles behind due to too slow speed. At the same time, the invention also provides a car control prompt system based on high-precision positioning.

Description

A car control prompt method and system based on high-precision positioning

technical field

The present invention relates to the field of urban transportation, in particular to a method and system for car control prompting based on high-precision positioning.

Background technique

With the rapid development of the economy and the continuous improvement of people's living standards, the problem of urban traffic congestion is becoming more and more serious, and the frequency of traffic accidents is increasing, which seriously affects people's normal life and work, so that life safety, intelligent transportation The system is internationally recognized as the best way to solve the problem of traffic congestion. The vehicle navigation system is an important part of the intelligent transportation system, and a key technology to achieve the lane-level navigation system is satellite navigation technology.

GNSS (Global Navigation Satellite System) is a general term for all navigation satellite systems worldwide, including GPS (Global Positioning System, US Global Positioning System), GLONASS (Russian Glonass Navigation Satellite System), Galileo (European Galileo Navigation Satellite System), BDS (China Beidou Navigation Satellite System), etc., all of the above navigation satellite systems are designed to provide users with satellite navigation and positioning services around the clock.

At present, the most common positioning mode of satellite receivers is: the ground receiving end receives satellite signals broadcast by navigation satellites, demodulates and collects enough data information to calculate the current position information of the ground receiving end, and generally needs to receive at least 4 available satellites Signal, the ground receiving end displays the positioning information to the user after the local solution. In the autonomous positioning mode of the satellite navigation receiver, there are several main errors of satellite orbit error, ionospheric error, tropospheric error and receiver noise, resulting in positioning accuracy generally above 10 meters, which cannot meet the application of lane level. Users cannot accurately know which lane they are in, so they cannot solve the application of lane-level accident alarms, lane change speeding reminders, and lane congestion reminders.

Contents of the invention

Based on the above situation, the present invention provides a car control prompt method based on high-precision positioning, which uses precise positioning at the lane level to obtain the current lane information and speed information of the vehicle, and then according to the lane speed information stored in the existing server, when When it is detected that the speed of the vehicle exceeds the speed limit information of the lane, the vehicle will be reminded. This can avoid potential safety hazards caused by overspeed or insufficient speed when changing lanes at high speeds.

A car control prompt method based on high-precision positioning, comprising the steps of: acquiring vehicle diversion request information; acquiring the vehicle's current lane information, driving speed, lane information after diversion, and speed limit information of the lane by using differential positioning; Whether the above driving speed is within the speed limit information of the lane, if not, a warning is issued.

It also includes the step of: detecting whether the distance between the vehicle and the vehicle in front is within a preset safety distance, and if not, issuing a warning.

A car control prompt system based on high-precision positioning, including: a vehicle information acquisition module, used to acquire the current precise location information of the vehicle, vehicle diversion request information and driving speed; a lane information providing module, used to position information to determine the lane to which the vehicle currently belongs, and obtain the position information of the lane after the diversion and the speed limit information of the lane according to the vehicle diversion request information; the speed change reminder module determines whether the driving speed of the vehicle is within the limit of the lane If not, send out a reminder warning.

Compared with the prior art, the present invention is simple to operate, and can solve the problem of overspeeding caused by ignorance of the speed limit information of the lane when the vehicle changes lanes on the expressway or the problem of affecting the driving of the following vehicles due to too slow speed. This helps to reduce the potential safety hazards caused by drivers changing lanes on expressways.

Description of drawings

Fig. 1 is a schematic flow chart of an embodiment of an automobile control prompt method based on high-precision positioning in the present invention;

FIG. 2 is a schematic structural diagram of an embodiment of an automobile control prompt system based on high-precision positioning according to the present invention.

Detailed ways

The solution of the present invention will be described in detail below in combination with the preferred embodiments thereof.

As shown in Figure 1, the method in this embodiment includes steps:

S101: Obtain vehicle diversion request information. the

The vehicle driver controls the vehicle to divert according to the actual situation; the diversion information is sent to the server, and the server obtains the vehicle diversion request information. As another implementation, the positioning system may also be used here to monitor the position change of the vehicle entering the second lane from the first lane to determine whether the vehicle is diverted, and then obtain the vehicle diversion request information. Since the direct distance between the first lane and the second lane is relatively small, the positioning system here adopts a high-precision positioning system.

S102: Obtain current lane information, driving speed, lane information after diversion, and speed limit information of the lane after diversion by using differential positioning.

Use the navigation system to perform differential positioning on the vehicle, obtain the current position information and driving speed information of the vehicle, and correspond the information with the corresponding lane information in the database to determine the lane information of the current vehicle. According to the vehicle diversion request information in S101, the lane information after the diversion is obtained, and the corresponding lane speed limit information is obtained from the database.

S103: Determine whether the driving speed is within the speed limit information of the lane, if yes, go to S104, if not, issue a warning.

Due to the highway, different types of lanes and different lanes will have different speed limit rules.

Two lanes: the left lane is 100~120km/h, and the right lane is 60~100km/h.

Three lanes: 110~120 km/h for the left lane, 90~110 km/h for the middle lane, 60~90 km/h for the right lane.

Four lanes and above, similar to three lanes: the leftmost lane, 110~120 km/h, the middle lane: 90~110 km/h, the rightmost lane: 60~80 km/h. the

And even experienced drivers may not be able to accurately grasp the speed when changing lanes in different lanes when driving, so there may be situations of overspeed or insufficient speed when changing lanes. When the driving speed of the vehicle is not within the speed limit information of the lane, a reminder warning will be issued. The reminder here includes, when the speed is lower than the preset speed limit information, a reminder warning of too low speed is issued, and when the speed is higher than the preset speed limit information, an overspeed reminder warning is issued.

S104: Detect whether the distance between the vehicle and the vehicle in front is within a preset safety distance, if yes, keep driving normally, if not, issue a warning.

Motor vehicles traveling at a speed greater than 100 km/h on the expressway should keep a distance of more than 100 meters from the vehicle ahead in the same lane; when the speed is less than 100 km/h, the minimum safety distance should not be less than 50 meters. When the vehicle is positioned with meter-level high precision, it can accurately identify the lanes and distances of the vehicle in front and behind. When existing drivers drive vehicles, they often know the approximate distance by visual inspection. When encountering dense fog, it is basically impossible to know the distance between the vehicle in front and themselves. Therefore, through high-precision positioning, the vehicle can obtain the accurate lane and distance of the vehicle in front under various weather conditions, and then issue a warning, reduce the hidden danger of rear-end collision caused by the weather and other factors, and improve the safety of vehicles driving on the highway. safety. The reason for traffic jams on the expressway is often because a vehicle rear-ends, causing its current lane to be congested, making the cars behind unable to move forward. In this case, if the vehicle can know the congestion source lane in advance, it can deal with it in advance to reduce the congestion waiting time.

As a more optimal implementation example, it is determined whether there is congestion in each lane in the direction of the vehicle; if so, search for the lane information of the congestion source and obtain the current lane information of the vehicle, and prompt the user to divert into a non-congestion source lane.

Fig. 2 shows a car control prompt system based on high-precision positioning of the present invention, a schematic structural diagram of an embodiment.

A car control prompt system based on high-precision positioning, including: a vehicle information acquisition module, used to acquire the current precise location information of the vehicle, vehicle diversion request information and driving speed; a lane information providing module, used to position information to determine the lane to which the vehicle currently belongs, and obtain the position information of the lane after the diversion and the speed limit information of the lane according to the vehicle diversion request information; the speed change reminder module determines whether the driving speed of the vehicle is within the limit of the lane If not, send out a reminder warning.

The vehicle information acquisition module is also used to acquire the precise position information and lane information of the vehicle in front, and determine whether the distance between the vehicle and the vehicle in front is within a preset safe distance through the speed change reminder module, and if not, issue a warning.

As a better implementation example, the lane information providing module here is also used to provide the current congestion situation of each lane. If it is determined that congestion occurs, search for the lane information of the congestion source and obtain the current lane information of the vehicle, prompting the user to divert into non-congestion source lane.

This system applies the method of the embodiment of the present invention, and the benefits brought are the same as those in the method embodiment, so no further description is given here.

The above-mentioned embodiments only express the implementation manner of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (6)

1. the automobile control reminding method based on hi-Fix, it is characterized in that, comprise step: obtain diversion of traffic solicited message, adopt difference location to obtain the current lane information of vehicle, travel speed and change its course after positional information and the speed-limiting messages in described track; Judge that described travel speed whether in the speed-limiting messages in described track, if not, sends reminder alerting.

2. automobile control reminding method according to claim 1, is characterized in that: also comprise step: detect vehicle whether with front vehicles distance whether in default safe distance, if not, send reminder alerting.

3. automobile control reminding method according to claim 1 and 2, is characterized in that: also comprise step: whether the getting congestion of each track that judges vehicle forward direction; If so, search for the lane information in the source that blocks up and obtain the current lane information of vehicle, prompting user changes its course and enters the non-track, source that blocks up.

4. the automobile control prompt system based on hi-Fix, is characterized in that, comprising: information of vehicles acquisition module, for obtaining the current precise position information of vehicle, diversion of traffic solicited message and travel speed; Lane information provides module, for judge the current affiliated track of vehicle according to the current positional information of described vehicle, and obtains the positional information in the track after changing its course and the speed-limiting messages in track according to described diversion of traffic solicited message; Speed change prompting module, whether the travel speed of judging described vehicle in the speed-limiting messages in described track, if not, sends reminder alerting.

5. automobile control prompt system according to claim 4, it is characterized in that: described information of vehicles acquisition module is also for obtaining precise position information and the lane information of front vehicles, and judge whether whether presetting in safe distance with described front vehicles distance of described vehicle by speed change prompting module, if not, send reminder alerting.

6. according to the automobile control prompt system described in claim 4 or 5, it is characterized in that: described lane information provides module also for current each track jam situation is provided, if judge and get congestion, search for the lane information in the source that blocks up and obtain the current lane information of vehicle, prompting user changes its course and enters the non-track, source that blocks up.