KR19980029649A - Risk Prediction Method for Vehicle Traffic Guidance System - Google Patents

Abstract

The present invention relates to a risk prediction method of a vehicular traffic guidance system, wherein the information about the dangerous area such as a sharp curve, a mountainous region, a rockfall danger region, an accident-prone region, etc. is stored as attribute data in a storage means of a vehicular traffic guidance system. When the driver selects the display mode of the map, the GPS receiver, the geomagnetic sensor, the gyro sensor, the speed sensor, and the brake sensors check the current position while the driver displays the desired map information and recognize whether the driver is near a dangerous area. In addition, when the driver is near the danger zone, the driver is informed by voice so that the driver can safely and comfortably operate even when the driver does not see the signboard for the danger zone.

Description

Risk Prediction Method for Vehicle Traffic Guidance System

The present invention relates to a hazard prediction method of a vehicle traffic guidance system that reads map data stored in an internal memory while receiving information of radio waves corresponding to a vehicle's current position from a satellite, and displays the data on a liquid crystal display. Particularly, while driving a vehicle, Hazard prediction of the vehicle traffic guidance system that enables the driver of the vehicle to operate safely and comfortably by inputting the situation of roads encountered as dangerous factors as voice data so that the driver can be notified when the vehicle is near a dangerous area. It is about a method.

Nowadays, the increasing number of vehicles has driven many people to drive to their destinations, and the complexity of road conditions and the increasing number of vehicles has led to a lot of traffic coming from behind if they do not drive quickly and accurately to their destination. It hindered the progress of the vehicles.

In the case of a first-time or busy city, if the driver does not know the exact route to his destination, the embarrassed driver may not be able to operate the vehicle smoothly and delays in finding the destination.

Therefore, you must ask a passing pedestrian for directions or unfold a map to see the route to the destination you want to go to, but it will bother the driver to bother you, and damage other vehicles following you during the delay. There were disadvantages such as being.

Therefore, the data of each map is subdivided and input using CD-ROM (Compact Disk-Read Only Memory) for navigation system for vehicle traffic guidance, and then GPS (Global Positioning System) receiver, gyro sensor, Geomagnetic sensors, vehicle speed sensors, etc. match the current vehicle's location with the map data and display it on the liquid crystal display installed inside the vehicle to facilitate road search and route selection.

However, the vehicle navigation system as described above in the vehicle CD-ROM driver, CD-ROM map program, GPS receiver. Hardware such as a gyro sensor, geomagnetic sensor, or vehicle speed sensor can be used to accurately guide a vehicle's route to its destination, but it does not recognize a dangerous situation encountered by road conditions or terrain while the driver is driving the vehicle. If you do not have the disadvantage that leads to accidents.

Accordingly, in the present invention, the position of the vehicle recognized by the GPS receiver is close to the dangerous area in the state of storing the information about the dangerous area such as a sharp curve road, a mountain area, a dangerous area of a rockfall, an accident-prone area as attribute data. The purpose of the present invention is to provide a hazard prediction method for a vehicle traffic guidance system that allows a driver to notify a ground driver of a dangerous area so that the driver can drive safely and comfortably.

In order to achieve the above object, the present invention is to allow traffic information in consideration of the driving direction of a vehicle in a conventional vehicle traffic guide system to be guided by image and voice,

Storing, as attribute data, information about a dangerous area such as a sharp curve road, a mountainous area, a rockfall danger area, and an accident-prone area in a second storage means in which map data is stored;

Allowing the driver to select a display mode of the map through a selection key of the key input unit and to input a place name of a starting point and a destination through an up / down key and an input key;

Reading and displaying information of a map including a destination to which the driver wants to go, from the CD-ROM;

Checking the current position of the vehicle through a GPS receiver, a geomagnetic sensor, a gyro sensor, a speed sensor, and a brake sensor;

Displaying a destination mark and a current location mark of the vehicle on the liquid crystal display;

Recognizing whether the current location of the vehicle is close to the location where the information on the hazardous area is stored as attribute data;

When approaching the danger zone, the voice is notified to perform the steps so that the driver can safely and comfortably operate even when the driver does not see the signboard for the danger zone.

1 is a block diagram schematically showing the overall configuration of the present invention.

2 is a flow chart illustrating an operation process of the present invention.

Explanation of symbols on the main parts of the drawings

2: microprocessor 6: second storage means

13: Function Controller 14: Electronic Volume

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

In addition to the key for the driver to operate the vehicle, a key input unit 1 for inputting an optional specification through a selection key (SEL), an up / down key (U / D), an input key (IN), and a joystick (JOY), etc. ,

A microprocessor (2) for controlling the internal operation according to the method and procedure of the control stored in the internal program memory (3) upon receiving the driver's option through the key input unit (1);

First storage means of a memory (4) for storing and outputting information according to an operation under the control of the microprocessor (2);

A CD-ROM driver 5 for reading and outputting map data stored in the second storage means of the CD-ROM 6 under the control of the microprocessor 2;

Under the control of the microprocessor 2, the data of the map stored in the internal address area as well as the information on the dangerous area are stored as attribute data, and the second CD-ROM 6 outputted when the position of the vehicle is near. Storage means,

A map including a map leading to a destination according to the map and data of the name read out from the second storage means of the CD-ROM 6, and the main place name being represented as an image on the liquid crystal display under the control of the microprocessor 2; A map data driver 7,

A sensor unit 9 for transmitting an operation state of the vehicle to the microprocessor 2 through a geomagnetic sensor MAGNET, a gyro sensor GYRO, a speed sensor SPEED, and a brake sensor BRAKE;

A GPS (Global Positioning System) receiving unit 10 for receiving radio waves of information on road conditions or vehicle driving directions from a satellite through an antenna 11,

Third storage means of the CD-ROM audio 12 for outputting data of voice guidance according to the operation of the vehicle, including foretelling a dangerous area under the control of the microprocessor 2;

Under the control of the microprocessor 2, the microprocessor 2 receives a voice signal from other acoustic devices of the vehicle while receiving a voice signal output from the third storage means of the CD-ROM audio 12. A function controller 13 for selectively outputting according to the control of

Under the control of the microprocessor 2, the volume of the voice signal output from the function controller 13 is automatically increased or decreased in accordance with the user's selection or operation state and amplified by the output amplifier 15. It is composed of electronic volumes 14 that can be heard through the sound.

The risk prediction method of the vehicular traffic guidance system of the present invention configured as described above initially includes information on dangerous areas such as sharp curves of roads, mountainous areas, danger areas of falling rocks, accident areas, and the like as attribute data to the second storage means. In the stored state (step 20), the driver checks whether the display mode of the map is selected while recognizing whether the driver has turned on the selection key SEL of the key input unit 1 to receive traffic guidance while driving the vehicle (step 20). 21) If the driver selects the display mode, the microprocessor 2 receiving the input of the display mode selects the starting position and the destination of the vehicle through the liquid crystal display 8 (step 22).

In the microprocessor 2, the name of the starting point and the destination is sequentially entered on the liquid crystal display 8 through the map data driver 7 in accordance with a state in which the driver presses the up / down key U / D of the key input unit 1. In step 23, the driver selects the current starting point and the desired destination and inputs the desired place name through the input key IN (step 24).

When the driver selects and inputs a place name of a starting point and a destination through the up / down key U / D and the input key IN of the key input unit 1, the microprocessor 2 recognizes the destination. Display through the liquid crystal display 8 to select which road to use, such as a national road, a highway, or a commercial road (step 25), and use the up / down key (U / D) to select the type of road to be used by the driver. Select via (step 26), and then select via input key (IN) (step 27).

In the microprocessor 2 which recognizes the destination selected by the driver and the type of road, the CD-ROM driver 5 provides map information via the route selected by the second storage means of the CD-ROM 6 through the selected route. After reading (step 28), corresponding data signals, clock signals and strobe signals are output to the map data driver 7 to display the map data on the liquid crystal display 8 (step 29).

While displaying the map data, the GPS receiver 10 receives information about a road situation from the satellite through the GPS receiver 10 via the antenna 11 (step 30), and displays the operating state of the vehicle. The geomagnetic sensor, the gyro sensor, the speed sensor, and the brake sensors of (9) are checked to recognize the current position of the vehicle (step 31).

Then, after displaying the destination mark selected by the driver to be located at the upper center portion of the map of the liquid crystal display 8 (step 32), the current vehicle position is displayed as the current position mark of the vehicle at the lower center of the liquid crystal display 8 ( Step 33).

When the vehicle is operated in the state and the position change is confirmed through the geomagnetic sensor, the gyro sensor, the speed sensor, and the brake sensors of the GPS receiver 10 and the sensor unit 9 (step 34), the direction of the vehicle in progress And the angular velocity is tracked through the geomagnetic sensor and the gyro sensor of the sensor unit 9 (step 35).

Next, the movement of the vehicle is confirmed on the map displayed on the liquid crystal display 8 (step 36) and displayed while the current position mark of the vehicle is moved in accordance with the movement distance of the vehicle (step 37).

While moving the vehicle, if the direction of movement of the vehicle is close to the location where the information on the dangerous area such as a sharp curve, a mountainous area, a rockfall danger area, or an accident-prone area is stored as attribute data (step 38), it is recognized. The microprocessor 2 outputs the data of the voice guidance according to the prediction of the danger zone stored in the third storage means of the CD-ROM audio 12 to the function controller 13 (step 39).

At the same time, the microprocessor 2 checks whether another voice is being output through the function controller 13 (step 40), and temporarily reduces the volume output from the device through the electronic volume 14. On the other hand (step 41), by measuring the noise level of the interior through the noise measuring instrument (not shown in the drawing) (step 42), if there is noise, increase the volume of the voice guidance according to the prediction through the electronic volume (14) 43, if there is no noise, the volume of the voice guidance according to the prediction of the danger zone is normally output through the electronic volume 14, so that the driver can hear the voice guidance according to the prediction of the appropriate volume with the appropriate volume. Step 44).

Therefore, according to the risk prediction method of the vehicular traffic guidance system of the present invention, information on dangerous areas such as sharp curves, mountainous areas, rockfall danger areas, accident-prone areas, etc. is stored as attribute data in the storage means of the vehicular traffic guidance system. When the driver selects the display mode of the map, the GPS receiver, the geomagnetic sensor, the gyro sensor, the speed sensor, and the brake sensors check the current position while the driver displays the desired map information and recognize whether the driver is near a dangerous area. In addition, when the driver is near the danger zone, the driver is informed by voice so that the driver can safely and comfortably operate even when the driver does not see the signboard for the danger zone.

Claims (3)

In the danger prediction method of the vehicular traffic guidance system in which the driver reads the map from the CD-ROM when the driver selects the display mode of the map and selects the display mode of the map through the selection key of the key input unit. Recognizing the current position of the vehicle through the GPS receiver and the sensor while displaying the map data desired by the driver on the liquid crystal display; If the direction of movement of the vehicle becomes close to the location of the danger zone while the destination mark and the current location mark of the vehicle are displayed, the voice controller outputs the data of the voice guidance according to the prediction of the danger zone stored in the third storage means to listen to the sound by sound. Risk precautionary method of a vehicular traffic guidance system, characterized in that it is carried out by the steps to make it possible. The method of claim 1, further comprising: temporarily reducing the volume of the device through the electronic volume if another voice is output through the function controller while the voice according to the prediction is output. If there is internal noise, the danger prediction method of the vehicle traffic guidance system that allows the user to listen to the voice guidance according to the prediction at all times while raising the volume of the voice guidance according to the prediction through the electronic volume. The method of claim 1, wherein the data of the voice guidance according to the prediction is initially stored in the second storage means as information on the dangerous area, such as a sharp curve of the map, a mountainous area, a dangerous area of a rockfall, an accident-prone area, etc. Hazard prediction methods for vehicular traffic guidance systems intended for use in a state.