KR20050005324A - a unit provide with information of traffic situation - Google Patents

Abstract

PURPOSE: A traffic condition information providing terminal is provided to inform traffic information at the position of a traveling vehicle through voice using traffic information from a FM network of a DARC system and position information from a GPS satellite and a GIS system. CONSTITUTION: A DARC receiver(230) receives FM DARC data information of text or graphic type. A GPS module(210) generates present position information by receiving position information from a GPS satellite. A GIS module(220) checks road position according to the position information from the GPS module, and scans traffic information of a corresponding road from the FM DARC data by an algorithm estimating a traveling direction with the GPS position information. A power supply unit(240) applies a driving supply power to each unit. A TTS module(260) converts text data into voice data. A speaker(270) receives voice data and outputs voice. And a main control unit(250) controls to convert digital traffic information in text type into voice data, and controls to output the converted voice data through the speaker.

Description

{A unit provide with information of traffic situation}

The present invention relates to a traffic information providing terminal, and more specifically, to a traffic information service method using a data radio channel (hereinafter referred to as DARC), which is a kind of FM additional broadcasting, transmitted through an FM network of a DARC system. It selectively receives only the necessary parts of the traffic information, receives the geographic information transmitted from the GPS satellites to determine the location of the vehicle, and uses the GIS (Geographic Information System) technology to voicely inform the driver of the traffic situation. Therefore, the present invention relates to a traffic situation information providing terminal configured to listen to a desired traffic condition information by voice while driving a vehicle.

DARC is a kind of FM supplementary broadcasting service. It is a system that provides digital supplementary information on the margin of FM frequency and provides various supplementary services such as news, securities, weather and traffic information along with FM broadcasting. In other words, it refers to an additional service that simultaneously transmits data or voice in digital form using unutilized frequencies in the frequency band allocated for FM broadcasting.

That is, for DARC service, a large amount of data can be accommodated and a voice broadcast must be received without disturbing the existing FM stereo voice broadcast.

Therefore, digital modulation becomes an important factor. To this end, DARC uses LMSK (Level Controlled Minimum Shift Keying), a digital modulation scheme developed exclusively for new FM additional broadcasting.

For reference, LMSK is designed for FM supplementary service in which the modulation level of subcarriers is tuned according to the modulation level of baseband by inserting the synthesized signal of stereo generator into DARC encoder. In addition, it is a wireless data communication technology that provides a wide range of services and provides complete networking functions.

This DARC is capable of receiving wireless data in real time while on the go, using the established airwave radio network, which is inexpensive, and has excellent wide area to receive information wherever radio frequencies are received. There is an advantage that can receive real-time information quickly.

However, the service currently provided using DARC broadcasts the entire area in order, or broadcasts mainly on the main road at a certain time, and broadcasts the same contents to all the drivers uniformly so that the driver's current location is needed. There is a problem that the surrounding information is unknown in detail.

In addition, DARC is generally not guided to the information that is guided on the road, such as traffic accident areas, sharp curve areas, etc., so that if the driver does not recognize the information board and passes by, it is not very helpful to the driver. .

In addition, according to the DARC, the information transmitted through the FM network is provided only in text form, and the traffic information does not provide sufficient value to users who do not know the place name or do not know the geography. When the system terminal receives the traffic information is displayed on the screen, it is difficult for the driver to see the screen from time to time while driving, and there is a problem that the risk of an accident is also increased.

That is, the traffic information provided on the screen in the situation that the driver of the vehicle must drive while watching the traffic lights, traffic safety facilities, speed cameras, driving conditions of the vehicle next to the vehicle while driving does not really help much in driving. There is a problem that adds to the risk.

The present invention has been made to solve the problems described above, the object of the present invention is to use the traffic information transmitted via the FM network of the DARC system and the current position using the vehicle location information and GIS system transmitted from the GPS satellites The present invention provides a traffic situation information providing terminal capable of guiding voice traffic information on a location of a vehicle being used.

Another object of the present invention is to implement a traffic situation information providing terminal that can identify the position of the vehicle currently driving by using a GPS system to estimate the traveling direction in advance to obtain information in advance about the vehicle traveling direction and provide it by voice. It is.

Another object of the present invention will be described in more detail in the configuration and operation to be described later.

1 is a block diagram illustrating a system configuration according to the present invention.

2 is a block diagram illustrating the configuration of a terminal according to the present invention;

* Description of the symbols for the main parts of the drawings *

10: DARC center 20: Terminal for providing traffic information

30: GPS satellites 40: GIS server

210: GPS module 220: GIS module

230: DARC receiver 240: power supply

250: main control unit 260: TTS module

270: speaker 280: screen display

According to an aspect of the present invention, there is provided a DARC receiver for receiving FM DARC data information in a text or graphic form, and a GPS module for receiving location information from a GPS satellite to generate current location information. GIS module that checks the location of the road according to the location information generated by the GPS module to identify the ID of the road, and searches and provides only traffic and geographic information of the corresponding local road by an algorithm for estimating the progress direction using the GPS location information. A power supply unit receiving power from a vehicle cigar jack or a separate power source and applying driving power to each part; and a TTS module converting text data received from the DARC receiver into voice data; A speaker for receiving voice data and outputting voice; And a main controller configured to control digital traffic information provided by the GIS module to be converted into voice data in the TTS module, and to output voice data converted in the TTS module as voice through the speaker. It is done.

Preferably, a screen display unit for receiving the graphic data received from the DARC receiver and displaying the image on the screen as an image may be further configured to display an image linked to or independent of the voice output through the speaker.

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

In the following description of the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted, and the following terms are used in the present invention. As the terms set in consideration of the present invention may vary according to the intention or custom of the producer, the definition should be made based on the contents throughout the present specification.

1 is a block diagram showing a system configuration according to the present invention, a vehicle equipped with a DARC center 10, a traffic information providing terminal 20, a GPS satellite 30 for transmitting GPS location information, and a GIS geography. It consists of a GIS server 40 for providing information.

The DARC center 10 receives digital traffic information and speed information through on / offline from the ROTIS traffic center (not shown), which collects traffic information and provides it as raw data (RAWDATA). It is configured to wirelessly output through a radio broadcast channel as digital data using LMSK (Level Controlled Minimum Shift Keying), which is a modulation method, and the digital data is transmitted as text or graphic data.

In addition, a system using a global positioning system (GPS) satellite 30 measures accurate time and distance from three or more NANSTAR satellites so that three different distances can be accurately determined by triangulation. As a system, it is a global positioning system that can accurately grasp the location of a certain area on the earth, and can obtain not only position, longitude and altitude but also three-dimensional speed information and accurate time. It is about 15m and the speed measurement accuracy is about 3cm per second.

In a vehicle equipped with a GPS reception module capable of receiving location information from the GPS satellites 30, accurate location information such as a road currently being driven may be known.

Geographic Information System (GIS) is a computer application system that collects, stores, analyzes, and prints geographic data. It is a system that stores all the information about geospatial on a computer and utilizes and analyzes it for various purposes. In the present invention, the GIS server 20 is configured to wirelessly provide the collected, stored, analyzed, and outputted information. Particularly, in the present invention, the shape, property, facilities, accident occurrence area, rapid urge area, and monitoring for the road are monitored. Information such as camera position and major traffic facilities (rest station gas stations) is networked and configured to check road location by GPS coordinates, estimate the direction of travel using GPS coordinates, and check road network information according to the vehicle travel direction.

As described above, the traffic condition information providing terminal 20 using the DARC service, the GPS, and the GIS system has the configuration as shown in the block diagram of FIG. 2.

In more detail, the traffic information providing terminal 20 includes a GPS module 210, a GIS module 220, a DARC receiver 230, a power supply unit 240, a main control unit 250, a TTS module 260, and a speaker 270. And a screen display unit 280, and a detailed description of each component is as follows.

First, the GPS module 210 has an antenna (not shown) capable of receiving GPS location data from the GPS satellites 30, which is protruded externally or installed internally, and the preferred specification is a communication speed of 4800bps, protocol NMEA0183 compatible, coordinate system WGS84 and Bassel support, the power supply voltage DC 5 V, etc., grasp the position of the vehicle equipped with the traffic state information providing terminal 20 according to the present invention with respect to the X, Y, Z-axis, and for estimating the traveling direction of the vehicle Accumulate and store the coordinates, recognize the reference coordinates for indicating the location of the road facilities, and is configured to determine the location value of the road network.

Here, the road network refers to a network formed by subdividing the road into a network form as shown in FIG. 1 and assigning a unique ID (ID) to each link.

The GIS module 220 receives road network information constructed on the GIS server 40 side, and performs a function such as road location check or road network check for a location or a direction determined by the GPS module 210. It is composed.

The DARC receiver 230 is configured to receive radio waves carrying FM data by adding digital data to a margin of general broadcast radio waves, with a reception frequency of 87.5 to 108 MHz, an antenna impedance of 750 ohms, and a reception sensitivity of 30 dB, Specifications of DC 10-18V input and DC 5V (0.5V) 2A output are preferably used. The digital data added here is traffic information, weather information, and stock information for each road point as shown in FIG. And information obtained by converting additional information into text or graphics.

The TTS module 260 is a module that converts text information received from the DARC receiver 230 into SPEECH information. The TTS module 260 converts the traffic communication information and the traffic facility information into the speaker ( 270 to be provided to the driver by voice.

The screen display unit 280 is a configuration for displaying the data received in the form of a graphic in the DARC receiver 230 as an image, which is converted to the voice data from the TTS module 260 and output to the speaker 270 according to the situation of the voice information It is a configuration for providing image information. As an embodiment, a liquid crystal display (LCD) panel or an organic lighting emitting diode (OLED) panel may be used, and in view of low power consumption, an OLED panel is considered in consideration of a relatively low voltage of a vehicle power supply. Preference is given to using.

The main controller 250 may also be referred to as an operating platform in other terms, and selectively receives data on a corresponding road ID from the GIS module 220 according to the location and progress information detected by the GPS module 210. Control to selectively receive data on a corresponding road ID through the DARC receiver 230, and transmit text data selectively received from the DARC receiver 230 to voice data from the TTS module 260. It is configured to control the conversion so that the speaker 270 is output as a voice, and also to control the graphic data selectively received by the DARC receiver 230 to be displayed as an image on the screen display unit 280.

A method of providing traffic status information according to the present invention using the traffic status information providing terminal 20 having the above-described configuration will be described below.

First, when a driver of a vehicle in which a traffic state information providing terminal 20 according to the present invention is turned on before departure starts, a guide broadcast such as wearing a seat belt is additionally provided through the speaker 270 of the traffic state information providing terminal 20. In this case, the driver usually knows the various routes to the destination, but does not know about the currently less obstructed route or the current road situation.

After turning on the driver, the driver makes a departure and if the traffic condition of the road is good immediately after the departure, he / she listens to the news, securities, weather, etc. received through the DARC receiver 230, and when the traffic condition becomes worse You will choose to receive the status information.

At this time, the selection operation may be performed through a selection switch (not shown) installed outside the traffic state information providing terminal 20, and the main control unit 250 drives the GPS module 210 to select the current vehicle. Control to grasp the location information.

When the GPS module 210 grasps the current position information and the driving direction information of the vehicle and applies it to the main control unit 250, the main control unit 250 drives the GIS module 220 to provide a corresponding road from the GIS server 40. Control to receive data about the ID selectively, and control the DARC receiver 230 to selectively receive the FM additional broadcast in the form of text for the corresponding road ID traffic traffic for the road where you are currently and the direction of the future The situation information is listened to, and the driving can be performed while listening to the voice information, so that the gaze does not deviate to another place, thereby driving more conveniently and safely.

On the other hand, the DARC receiver 230 receives the information in the form of a graphic of the road ID is controlled to be displayed as an image on the screen display unit 280 according to the present invention, so as to the audio information output through the speaker 270 The image information provided in synchronization provides a method for the driver to recognize the information more efficiently by simply looking at the moment when needed.

If information indicating that a traffic accident, congestion, etc. has occurred from a driver's straight ahead direction is collected, the driver is currently broadcasting by operating the DARC receiver 230, the TTS module 260, and the speaker 270. You can listen to the situation information immediately, and you can give the driver the time to select a different route in your head from among the various routes that the driver knows, or the voice information is accompanied by the guidance of the other route in advance. It may be applied to or applied to graphic information to guide another path in the form of image information through the screen display unit 280.

And, if the driver is the first way to the destination, depending on the road and the direction of the road, the accident accident area about 1km ~ 500m ahead, the safe driving area in front of the school, the speed camera control area, the sharp curve, the S-curve, the rest area, the gas station It is possible to reach the destination safely and conveniently as the front and surrounding information of the back and the current driving information such as the driving speed of the vehicle, the speed limit of the driving road and the like are provided by voice and video.

As described above, in the present invention, the GPS module 210 and the GIS module 220 are used to estimate the current position of the vehicle and to estimate the traveling direction of the vehicle. The digital traffic information in the form of text or graphic received from the DARC receiver 230 is Since the TTS module 260 and the screen display unit 280 are converted into voice and image information, respectively, and provided to the driver, the TTS module 260 and the screen display unit 280 may be used as a navigation tool that is much more convenient than a navigation system previously provided only as an image.

In addition, although the screen display unit 280 is referred to as a component of the traffic information providing terminal 20 in the present invention, it is possible to configure only a speaker that provides a voice by removing an expensive display panel. The system configuration is much cheaper than the navigation system of.

As described above, the preferred embodiments of the present invention have been described in detail, but those skilled in the art may change or change the present invention as many as possible without departing from the spirit and scope of the present invention. It will be appreciated that the true technical protection scope of the present invention should be judged by the claims.

According to the present invention, since digital information is selectively provided only for a specific area desired using GPS and GIS among services provided using DARC, only the information necessary for a driver can be efficiently obtained, and a text form in the TTS module is provided. By transforming the data into voice data to be guided by voice, the driver has an effect of conveniently obtaining traffic information without having to take his gaze from the front.

In particular, for drivers who do not know geography well, information about front and surrounding areas such as accident area in front of 1km to 500m, safe driving area in front of school, speed camera control area, sharp curve, S-curve, rest area, gas station, As the current driving information such as the driving speed of the vehicle and the speed limit of the driving road is provided by voice and video, it is possible to safely and conveniently reach the destination, thereby preventing accidents that may occur.

Claims (2)

A DARC receiver for receiving FM DARC data information in text or graphical form; A GPS module for receiving location information from GPS satellites and generating current location information; GIS module that checks the location of the road according to the location information generated by the GPS module, retrieves the traffic information of the corresponding road from the FM DARC data received by the DARC receiver by an algorithm for estimating the traveling direction using the GPS location information. ; A power supply unit receiving power from a vehicle cigar jack or a separate power source and applying driving power to each part; A TTS module for converting text data received by the DARC receiver into voice data; A speaker for receiving voice data and outputting voice; And The digital traffic information in text form selectively received by the DARC receiver is controlled to be converted into voice data by the TTS module only for the ID of the road searched by the GIS module, and the voice data converted by the TTS module is converted through the speaker. Traffic condition information providing terminal comprising a main control unit for controlling the output to the voice. The method of claim 1, And a screen display unit for receiving the graphic data received from the DARC receiver and displaying the image on the screen as an image.