KR20080076456A - Vehicles nevigation device and its traveling state sensing method using sensor - Google Patents

Abstract

A navigation device of a vehicle using a sensor and a method for detecting a driving state of the vehicle are provided to allow a driver to recognize driving habits of the driver by automatically reporting a driving history and an abnormal situation of the driver. A navigation device includes a position measuring unit(114), a navigation application processing unit(112), a route searching unit(111), a screen image outputting unit(115), and a sound outputting unit(116). The position measuring unit measures a position of a vehicle through a GPS(Global Positioning System). The navigation application processing unit compares coordinates of a map data storing unit(113) and present coordinates of the vehicle to display the present position of the vehicle on a screen.

Description

Vehicle navigation device and its traveling state sensing method using a sensor {Vehicles nevigation device and its traveling state sensing method using sensor}

1 is a configuration diagram of a conventional navigation driving record information;

2 is a flow chart of a driving record using a conventional navigation;

3 is a navigation configuration having a driving state detection recording function using a sensor to which the present invention is applied,

4 is a flowchart illustrating a driving state detection process using a sensor according to the present invention.

5 is a drowsy driving prevention warning navigation configuration according to the present invention,

6 is a road construction of a shock detection navigation using a sensor according to the present invention,

7 is a road surface and uneven processing flow chart using the sensor according to the present invention.

* Explanation of symbols for main parts of the drawings

111, 231: route search unit

112, 232: navigation application execution processing unit

113, 233: map data storage unit 114, 239: position measurement unit (GPS)

115.235: screen output section 116, 215, 237: sound output section

117: running state recording performing processing unit 118: acceleration, inclination measuring unit

119: driving state data storage unit

211: drowsiness prevention application execution processing unit 212: front collision detection unit

213: vehicle or driver head motion detection unit 214: vibration output unit

234: POI storage unit 236: vibration output unit

238: road surface information processing unit 238a: road surface shock detection unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device for a vehicle using a sensor and a method for detecting a driving state thereof. In particular, the sensor is coupled to the vehicle navigation to detect a vibration of a road surface transmitted to the vehicle while driving, thereby leaving the vehicle due to drowsy driving or inattention of a driver. At the same time, it analyzes the moving direction, acceleration and deceleration information of the body with quantitative figures to analyze the effect of road surface and vehicle correlation on safety and to report the driving results. It is about a method.

In general, accidents may occur as a result of accidents, but they often lead to bigger accidents due to driver's habits, such as drowsy driving, sudden start, sudden curve, and sudden stop.

Navigation that has been used up to now is used as a function that brings convenience to the driver by guiding the unknown path or the shortest route.However, due to the nature of installation and use, it must be attached to the vehicle while driving and must be equipped with a function that enables input and confirmation of information. There was a problem.

Conventional navigation detects drowsiness by detecting a movement of a vehicle or a part of a body or body contact such as a neck or a head or a distance from a vehicle in front of the vehicle through a sensor, or by generating music and sound for a period of time for each period. There was no exact function.

 1 is a diagram illustrating a conventional navigation driving record information, which includes a route search unit 11 for searching a shortest route to a destination when a vehicle is driven, and a satellite positioning system (GPS) satellite. Position measuring unit 14 for acquiring the current position signal of the vehicle through the present position signal of the vehicle is compared to the coordinates of the map data storage unit 13 with respect to the current position of the vehicle to the screen output unit 15 It consists of a navigation application processor unit 12 for display.

The conventional navigation can bring convenience to the driver by guiding the unknown road guidance or the shortest route, but due to the nature of the installation and use of the navigation, the conventional navigation should be attached to the vehicle while driving, and additional functions capable of inputting and confirming information should be provided. There was a problem.

FIG. 2 is a flowchart of a driving record using a conventional navigation. First, when a navigation attached to a vehicle is operated while driving a vehicle (S1), the navigation guides the shortest route to a destination input by the driver (S2). Set and input a random time (S3).

At this time, by measuring the position of the vehicle to the input destination through the GPS satellites (S4) indexing the current position of the vehicle on the navigation map (S5) and then determines whether the vehicle has arrived at the destination (S6) The operation is terminated (S7), and if the arrival time does not arrive at the destination, it is determined whether the set time is reached (S8). If the input time is reached, the time is input again.

In order to solve the above problems, the present invention combines a sensor to the navigation of the vehicle to detect vibrations and impacts on the road surface transmitted to the vehicle while the vehicle is running, and analyzes the moving direction, acceleration, and deceleration information of the vehicle body in a quantitative manner. It is an object of the present invention to provide a navigation device for a vehicle using a sensor that analyzes the effect of the road surface and vehicle correlation on each driving section on safety and informs the driving result, and a driving state sensing method thereof.

In order to achieve the above object, the present invention provides a position measuring unit for acquiring a position of the vehicle using a positioning system (GPS), a map data storage unit defining current position information of the acquired vehicle by time and coordinates, and A navigation application execution processor configured to display the current location of the vehicle identified on the screen in comparison with the coordinates of the map data storage unit, a route search unit connected to the navigation application execution processor to search the shortest path to the destination of the vehicle driver; A screen output unit and a sound output unit for outputting the identified position information, map information and a pre-warning sound, an acceleration and inclination measuring unit continuously detecting all accelerations and inclinations of the vehicle, and the sensed data Quickly understand the change in these values by converting them into normalized values Driving state recording performance processing unit to process meaningful data such as steep slope and damaged road, and driving state data storing such processed data as a record of driving so as to send warning signal to driver when abnormal situation is detected It is characterized by including a wealth.

In order to achieve the above object, the present invention provides a front collision detection unit for detecting vibrations and impacts on a road surface on which a vehicle travels, and a vehicle path or driver for detecting the movement of the vehicle and the movement of the neck, head, body, or body contact. Head motion detection unit, forward collision detection unit for detecting the impact of the concave, convexity and safety rods on the road surface, and the sound to notify the detected front shock and the dangerous situation caused by the movement of the vehicle and the body by sound or vibration method And drowsiness prevention application performing processing unit for informing the driver through the vibration output unit.

In order to achieve the above object, the present invention provides a first step of guiding a shortest route to a destination through navigation attached to the vehicle, and a second step of sensing driving records of acceleration / deceleration, tilting and abnormal conditions of the vehicle. And a third step of storing the driving situation data by measuring the position of the vehicle with respect to the detected driving record through GPS, and determining whether the vehicle has arrived at the destination, and ending the vehicle driving when the vehicle arrives. When the vehicle does not arrive at the destination, it is determined whether an unusual situation has occurred, and when the unusual situation occurs, the fifth step of displaying a warning signal according to the dangerous situation and displaying it through the screen output unit and when the unusual situation has not occurred in the vehicle And a sixth step of performing the driving record sensing procedure again.

The present invention combines the acceleration sensor (shock sensor) to the navigation in the vehicle, and in parallel with the path search, which is the original function of navigation, continuously stores the three-dimensional, acceleration, and impact amount of the acceleration sensor attached to the vehicle while driving the vehicle. The dangerous situation detected by notifying the driver of the acceleration / deceleration pattern through the navigation screen and automatically detecting the unevenness of the road shoulder and the safety rod is displayed to the user through the screen output, sound (including voice), and body contact vibration. It has the advantage of promoting safety by protecting the vehicle and the driver so that the user can prepare in advance.

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

3 is a navigation configuration diagram having a driving state detection recording function using a sensor to which the present invention is applied, wherein the current position information of the vehicle acquired from a position measuring unit (GPS) 114 for measuring the position of the vehicle through GPS is measured in time; In accordance with the coordinates of the map data storage unit 113 defined by the coordinates, the navigation application execution processor 112 for identifying the current position and displaying it on the screen, and connected to the navigation application execution processor 112 to the vehicle driver to the destination. The route search unit 111 for searching the shortest path, the screen output unit 115 for outputting the position information grasped from the position measuring unit and the map information and the pre-warning sound stored in the map data storage unit 113, and the sound. The output part 116 is comprised.

According to the present invention, the acceleration and inclination measuring unit 118 continuously detects all accelerations and inclinations given to the vehicle separately from the navigation application execution processing unit 112, and converts the sensed data into a converted value. The driving state recording performance processing unit 117 for processing the change of values into meaningful data such as a sharp curve, steep slope, and broken road that can be understood by the driver, and a warning signal to the driver when the processed meaningful data is detected. It includes a driving state data storage unit 119 for storing as a record of the driving to send.

Looking at the operation of the navigation having a driving state detection recording function using the sensor as described above are as follows.

When the vehicle starts to operate, the navigation application execution processor 112, like the existing navigation apparatuses, causes the navigation application performance processing unit 112 to acquire the position signal of the current vehicle and guide the GPS of the location measuring unit 114 to map the vehicle. The current position is identified by contrast with the coordinates of the data storage unit 113 and displayed on the screen.

In the apparatus of the present invention, the driving state recording performing processing unit 117 operates separately from the navigation application performing processing unit 112, which senses the shock and acceleration of various states transmitted to the vehicle running on the road surface and measures the measured value. They will be quantified and analyzed as meaningful signals. In this case, the meaningful data are as follows.

▲ Slope Level Detection

▲ Acceleration detection according to vehicle's progress and stop

▲ Rapid curve level detection according to the inertia that appears during vehicle movement

▲ Detects impact level due to road breaks and bumps

▲ Detecting sections of paved or unpaved roads, detecting the condition of pavement

▲ Detects convex and concave and convex status information

In general, the acceleration sensor refers to a sensor that can measure the direction of movement about three axes of X, Y, and Z, and the acceleration about each axis (including the acceleration-deceleration), and the tilt sensor indicates the inclination of the vehicle's three axes. Will be measured.

The change in acceleration transmitted to the vehicle using the acceleration sensor of the acceleration and inclination measuring unit 118 is simultaneously measured by dividing each of the axes of X (left and right), Y (up and down), and Z axis (straight). do. Then, the acceleration value for each axis is sampled 10 times per second (0.1 second unit) to calculate the equivalent acceleration value in 1 second unit, and the change of the equivalent acceleration value of these values is measured again. Measure the change.

The navigation with the acceleration sensor and the inclination sensor continuously detects all acceleration and inclination values applied to the vehicle while driving, and these data are converted into values quantified by the driving state recording performance processing unit 117. The change of values is processed into meaningful data such as a sharp curve, a steep slope, a broken road, and the like, which can be understood by the driver, and is recorded in the driving state data storage unit 119.

The driving state recording performing processing unit 117 records the driving state in the driving state data storage unit 119 and detects an abnormal situation such as a sudden acceleration, sudden braking, or vibration caused by an unexpected road surface at the same time as the driving pattern is recorded. The warning signal is sent to the driver through the screen output unit 115 and the sound output unit 116 of the performance processor 112.

In addition, based on the record stored in the driving state data storage unit 119 after the driving for a predetermined time, the driver may display the acceleration, deceleration pattern and abnormal situation related to the entire operation through the display unit for each change or measurement of the hourly measurement value. The driver will be notified of events such as rapid acceleration, sudden curve, and breakage road that can be understood by the driver, and the violent driving will be evaluated by calculating the frequency of rapid acceleration and sudden stop pattern.

4 is a flowchart of a driving state detection process using a sensor according to the present invention. First, when a navigation attached to a vehicle is operated while driving a vehicle (S11), the navigation guides the shortest path to a destination input by a driver (S12). At this time, the driving record of the acceleration / deceleration, tilt and abnormal situation of the vehicle is sensed (S13), the position of the vehicle with respect to the detected driving record is measured through GPS (S14), and the data of the driving situation is stored (S15). .

When the vehicle arrives at the destination input by the first driver (S16), when the vehicle arrives at the destination (S17), the vehicle is finished driving (S17).

If the vehicle does not arrive at the destination, it is determined whether an unusual situation occurs while driving (S18), and in particular, when a situation occurs, a warning signal is triggered as a dangerous situation (S19) and displayed through the screen output unit. If the accident does not occur, the driving record detection procedure is performed again.

Referring to Figure 5 will be described the configuration of the navigation to detect drowsiness prevention and road shock used in the embodiment of the present invention.

5 is a drowsy driving prevention warning navigation configuration according to the present invention, the front collision detection unit 212 for detecting the impact, such as concave, convex unevenness and safety rods on the road surface running the vehicle, the movement of the vehicle, neck or head, etc. The vehicle path or the driver's head movement detecting unit 213 for detecting some movements of the body or body contact, the detected front shock, the situation caused by the movement of the vehicle and the body, and the driver's drowsiness to detect the vibration output unit 214. And a drowsiness prevention application execution processing unit 211 which notifies the driver of a screen output or a sound (including voice) and a body contact type vibration through the sound output unit 215.

The drowsy driving prevention warning navigation combines an acceleration sensor (impact sensor) with the navigation to automatically detect the unevenness and the stable bar of the road shoulder measured during driving of the vehicle. It protects the vehicle and the user by warning by sound (including voice) and body contact type vibration, and enables the user to be prepared in advance for safety.

6 is a schematic diagram of a road shock detection navigation using a sensor according to the present invention, a route search unit 231 for searching a shortest route to a destination when a vehicle is driven, and a position measurement for acquiring a current position of a vehicle through a GPS satellite when the vehicle is driven The map data storage unit 233, which defines current location information of the vehicle acquired through the GPS satellites by time and coordinates, stores safety information (POI) obtained by obtaining and storing meaningful information about a driving road of the existing vehicle. The display unit 235, the vibration output unit 236, the detected position information by the coordinates and the safety information on the road and the impact of the front, the situation according to the movement of the vehicle and the body and the driver's drowsiness is detected. And a navigation application execution processing unit 232 for generating an alarm sound to the user through the sound output unit 237.

In addition, the navigation application execution processing unit 232 is connected to the navigation application execution processing unit 232 and receives a detection signal from the road surface shock detection unit 238a which detects the impact of concave and convex irregularities and convex irregularities and safety rods on the road surface. It further comprises a road surface information processing unit 238 for transmitting a warning message to the screen output unit 235 and the sound output unit 237 and the vibration output unit 236 connected thereto.

Referring to the operation according to the configuration, the navigation application execution processing unit 232, when the user starts to operate, as with the existing navigation devices, the GPS acquires the current position signal of the vehicle to the coordinates of the map data storage unit 233 In contrast, the current position is identified and displayed on the screen output unit 235.

Here, the present invention is a road surface information processing unit for the impact detected from the road shock detection unit 238a for analyzing the movement direction and acceleration of the X, Y, and Z axes collected through the acceleration sensor separately from the navigation application execution processing unit 232. Analyze at 238 and convert to meaningful data.

At this time, the data is the drowsiness prevention application execution processing unit 232 determines whether or not drowsiness and the warning processing, the road surface shock detection unit 238a all the acceleration (direction and acceleration for each three axes) applied during the operation. The value is continuously observed and transmitted to the drowsiness preventing application performing processor 211.

As described above, when the driver moves toward the shoulder or the middle separator due to drowsiness during driving on the highway, the driver steps on the unevenness installed in the road location lane, and the vibration applied to the vehicle is regarded as a dangerous situation by the road surface information processing unit 238. This information is transmitted to the navigation application execution processor 232 to transmit a warning message to the connected screen output unit 235 and the sound output unit 237 to prevent the user from accidents.

7 is a road surface and uneven processing flow chart using a sensor according to the present invention, the vehicle starts the safe driving (S101) to detect the dangerous situation of the road surface such as unevenness, shoulder, safety rods, etc. while driving to the destination (S102) If it is determined (S103) that a dangerous situation is not detected on the driving surface, the vehicle returns to the previous driving road again, and if a dangerous situation is detected, a warning signal is issued (S104) to notify the driver, and the dangerous situation of the road surface is terminated. If it is determined (S105) that the dangerous situation is not finished, the warning signal is issued again (S104), and if the dangerous situation of the road surface is terminated, the safe driving is terminated (S106).

As described above, the present invention provides the driver's habit information by automatically recognizing and reporting the driving history and abnormal situation of the user, and thus has the effect of inducing the driver to drive safely and economically.

Claims (8)

In a vehicle navigation device for detecting a driving state using a sensor, A position measuring unit which acquires the position of the vehicle using a positioning system (GPS); A map data storage unit defining current position information of the acquired vehicle by time and coordinates; A navigation application execution processor configured to display the current location of the vehicle on the screen by checking the coordinates of the map data storage unit; A route search unit connected to the navigation application execution processor to search a shortest route to a destination of a vehicle driver; A screen output unit and a sound output unit for outputting the identified location information, map information, and pre-warning sound; An acceleration and inclination measuring unit for continuously detecting all accelerations and inclinations of the vehicle; A driving state recording performing processing unit for converting the sensed data into an ordered value and processing the change of the values into meaningful data such as a sharp curve, a steep slope, a broken road, etc. which the driver can understand; And And a driving state data storage unit for storing the processed meaningful data as a record of driving so as to send a warning signal to a driver when an abnormal situation is detected. According to claim 1, wherein the driving state recording performance processing unit Vehicle navigation apparatus using a sensor, characterized in that the quantitated and analyzed the impact and acceleration measurement values of various states transmitted to the vehicle running on the road surface with a meaningful signal. The method of claim 2, wherein the meaningful signal is Inclination level of driving road, acceleration according to the progress and stop of the vehicle, sudden curve due to inertia during the movement of the vehicle, impact caused by road breakage and irregularities, paved or unpaved road section, pavement condition and convexity, concave and irregularities Vehicle navigation apparatus using a sensor, characterized in that it comprises status information. The method of claim 1, wherein the acceleration, tilt measurement unit Vehicle navigation device using a sensor, characterized in that for measuring the change in the acceleration transmitted to the vehicle by using a sensor divided into three axes (X (left and right), Y (up and down), Z axis (straight)). In the navigation device for detecting a drowsy driving on the road using a sensor, A front collision detection unit configured to detect a vibration and an impact on a road surface on which the vehicle travels; A vehicle path or driver head motion detection unit for detecting the motion of the vehicle and the motion of the neck, head, body or body contact; A front collision detector configured to detect the impact of the concave, convex, and safety rods on the road surface; And For the vehicle using a sensor comprising a drowsiness prevention application performing processing unit to notify the driver through the sound and vibration output unit for notifying the front of the shock and the dangerous situation according to the movement of the vehicle and the body in a sound or vibration manner Navigation device. The method of claim 1, A road impact detection unit connected to the navigation application performing processing unit to detect a concave and convex unevenness on the road surface and a shock signal of a safety rod; And a road surface information processing unit for transmitting the detected signal as a sound or vibration type message. In the driving state processing method of a vehicle using a sensor, A first step of guiding a shortest route to a destination through a navigation attached to the vehicle; A second step of sensing driving records of acceleration / deceleration, tilting and abnormal conditions of the vehicle; A third step of measuring the position of the vehicle with respect to the detected driving record by using GPS to store driving situation data; Determining whether the vehicle has arrived at the destination and ending the vehicle driving if the vehicle arrives; A fifth step of determining whether an unusual situation has occurred when the vehicle does not arrive at the destination, and if a specific situation occurs, triggering a warning signal according to a dangerous situation and displaying it on the screen output unit; And And a sixth step of proceeding with the driving record detection process again when no unusual situation occurs in the vehicle. In the unevenness processing method of the road surface using a sensor, A first step of determining whether a dangerous situation of a road surface is detected while the vehicle is driving to a destination, and when a dangerous situation is detected, a warning signal is issued to notify a driver; A second step of determining whether the dangerous situation is terminated and triggering a warning signal again when it is not terminated; And And a third step of terminating the safe driving when the dangerous situation is terminated.

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