KR100494641B1 - On Board Equipment And Road Side Equipment for active DSRC - Google Patents

Abstract

The present invention provides an active vehicle terminal (OBE; On Board Equipment) and a roadside base station (RSE) for simultaneously enabling various additional services in an active DSRC (Active Dedicated Short Range Communication). The present invention intends to maximize the use of ITS. In other words, the present invention maximizes the frequency utilization rate, and can be provided with a variety of information from the conventional passive transmission and reception method to increase the safety when driving the vehicle, congestion section reduction according to traffic information use and energy saving effect accordingly In addition, it is easy to collect bus fares and tolls, and can create added value by enabling quick payment methods, maximizing limited road usage rates, and quick access to life information. For example, the present invention can easily configure a short distance wireless communication bus system (DBS; DSRC BUS SYSTEM) and automatic toll collection system (ETC; Electronic Toll Collection), and can service dozens of additional functions. have.

Description

On-board equipment and roadside equipment for active short-range wireless communication network {On Board Equipment And Road Side Equipment for active DSRC}

The present invention relates to an Active Dedicated Short Range Communication (Active DSRC) used in an intelligent traffic information system (ITS). RSE) and a vehicle-mounted terminal (OBE) installed in the vehicle to transmit and receive various information while the vehicle is running, and provide on-board terminal (OBE; On Board Equipment) and roadsides of active short-range dedicated wireless communication network. RSE (Road Side Equipment).

In general, Dedicated Short Range Communication (DSRC) is one of the elements of the Intelligent Transport System (ITS), which is installed on roadside equipment (RSE) and vehicles installed on the roadside. It is a system that establishes a state-of-the-art road traffic environment through automatic communication between collected vehicle-mounted terminals (OBE) within a short-distance communication radius and provides automatic fare collection and road traffic safety information, thereby promoting traffic efficiency and cost reduction. do.

However, the conventional toll gate toll collection system is capable of only one-way communication in a passive manner, and only toll charge service is possible at the toll gate, and the frequency band used is 30 MHz, and traffic information cannot be obtained while driving. There is a problem that the service is not possible at all when entering the city by leaving the highway, and does not meet national standards. In addition, some bus stop guidance systems under test are not real-time information, and the information is limited to bus operations. And bus fare collection system is also impossible to find out the bad credit, the conventional technology has no function other than toll collection.

Accordingly, an object of the present invention is to provide a vehicle-mounted terminal and a roadside base station apparatus of an active short-range dedicated wireless communication network capable of simultaneously providing various services in order to solve the problems of the prior art.

In order to achieve the above object, the apparatus of the present invention is an intelligent traffic information system (ITS) using an active short-range dedicated wireless communication network (DSRC) having a center server connected with a card company server and providing various traffic information. And a microprocessor unit for communicating with the center server, a codec unit for encoding and converting digital data into an analog signal, and converting and decoding the analog signal into digital data, and a modulation and demodulation unit for modulating the coded signal or demodulating the modulated signal. It consists of a radio module that converts a modulated signal into a high frequency radio signal and radiates it into the air through an antenna or converts a high frequency signal received through an antenna into a low frequency signal, and a vehicle identification signal for transmitting and receiving a vehicle identification signal to and from a terminal through an antenna. Bases installed at predetermined intervals on a plurality of road networks And a vehicle identification signal for communicating with the roadside base station apparatus, a card terminal, a passenger guide, a driver's display board, and a passenger to receive card information through the card terminal when the passenger pays a card. It is possible to provide a variety of DSRC services by having a vehicle-mounted terminal, which is composed of a microprocessor unit which transmits and analyzes various information received from the roadside base station side and displays the information on the passenger guide and the driver display panel. It is characterized by being.

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

First, the in-vehicle terminal OBE and the roadside base station apparatus RSE of the present invention can provide a myriad of services, one example of which will be described. By using the present invention it is possible to build a bus information system (DBS: DSRC BUS SYSTEM), the bus information system (DBS) is to allow the passenger to pay the bus fare using the card when boarding the bus do. That is, in DBS, the on-vehicle terminal OBE reads the passenger's card and transmits the automatic charging signal directly to the card company through the roadside base station device (RSE) via the center server. It is possible to establish a very convenient billing system that handles bus fares. In addition, passengers are provided with various information such as traffic information, types of traffic delays, accidents, delay information, diary, news, etc. from the center server. It is possible not only to receive information but also to transmit it. In addition, when paying the passenger's fare, it is possible to automatically check the black list (BL) received from the center server to find out the bad credit. The system of the present invention is connected with a traffic management center to grasp operation information, routes and traffic flows of city buses (or express buses) in real time so that the operation information can be grasped at each stop where an identification device is attached. A wide variety of services are available using the DSRC network.

1 is a block diagram showing the configuration of an active short-range dedicated wireless communication network system to which the present invention is applied.

Referring to FIG. 1, an active short-range dedicated wireless communication network system (DSRC) includes vehicle-mounted terminals 10-1 to 10 -M mounted on a vehicle 1, and a roadside base station apparatus installed at regular intervals on a roadside 2. 20-1 to 20-N, and a center server 30 connected to a roadside base station apparatus 20-1 to 20-N and a dedicated network, and a card company system 40 connected to the center server 30. It consists of.

In addition, the center server 30 receives a signal including a lot of information such as weather forecasts, traffic information, Internet information from an external information provider, such as A, B, ~ Z, these signals are roadside base station apparatus 20 installed on the roadside On-vehicle terminals 10-1 to 10 -N transmitted to -1 to 20 -N and radiated to the air through an antenna, and mounted on each vehicle 1, are roadside base station apparatuses 20-1 to 20. -N) receives radio signals radiated through the air while passing through the area where it is installed. The in-vehicle terminals 10-1 to 10 -N may display various types of information by decoding the received signal, and may select and request and display desired information as necessary. In addition, card information can be entered at the time of passenger boarding to handle the payment of the bus fare or to automatically charge the toll when the vehicle passes through the toll gate.

For example, when the device according to the present invention is applied to a bus, the card terminals are installed in the in-vehicle terminals 10-1 to 10 -N, respectively, and passengers approach the card to send the charging signal to the card company server 40. Can send and process this information, and a large amount of information for passengers can be displayed in the Variable Message Sign (VMS), and the indicators on the driver's side can be used to monitor the operation of the system and to find creditors. can do.

FIG. 2 is a block diagram showing a detailed configuration of a roadside base station apparatus shown in FIG. 1, and FIG. 3 is a block diagram showing a detailed configuration of a vehicle-mounted terminal shown in FIG.

Referring to FIG. 2, the roadside base station apparatus 20-1 encodes digital data into a microprocessor unit (MPU) 21 for communicating with the center server 30, converts the digital data into an analog signal, and converts the analog signal into digital data. Codec unit 22 for converting and decoding the signal, Modulation / demodulation unit (MOD / DEMOD) 23 for modulating the coded signal or demodulating the modulated signal, and converting the modulated signal into a high frequency radio signal to convert the air through an antenna 26. A radio module (RF) 24 for emitting a high frequency signal received through the antenna 26 to a low frequency signal, and a vehicle identification signal through the vehicle identification sensor 27 and the antenna 26 and the vehicle 1 and the vehicle. It consists of a vehicle identification signal 25 for transmitting and receiving with the on-board terminals (10-1 ~ 10-N) and input the signal transmitted from the center server 30 to the microprocessor 21 using the S / W Configure features such as 1 to enable national standards There is so. Here, the vehicle identification signal 25 obtains vehicle model information through the vehicle identification sensor 27 (eg, laser beam, etc.), and transmits the service data signal to the terminal through the wireless module 24.

In addition, the antenna 26 is configured to copy the low side lobe characteristics, thereby preventing the signal from being transmitted to the vehicle left and right outside the vehicle main line, thereby preventing interference with vehicles on other routes.

* Active DSRC function 1) Providing and managing traffic information on various roads 2) Regional traffic information management 3) Freight vehicle operation management 4) Automatic fare collection 5) Public transportation fare collection and related card user management 6) City bus related operation management 7) Basic information provided (various news, securities, weather, advertisement, etc.) 8) Dangerous goods vehicle management 9) Decided road section information 10) Intersection entry information and relative vehicle entry information (collision and risk prevention) 11) Highway traffic control / linkage 12) Providing traffic information on national roads / provincial roads 13) Management of accidents on national roads / provincial roads 14) Guide to traffic information before departure 15) Highway bus operation management 16) Automated vehicle safety diagnosis information using ECU, CAN module and DSRC 17) Railway Provides information on crossing crossings 18) Provides various information in vehicles 19) Controls traffic lights for emergency vehicle priority signals 20) Provides information in case of accidents or emergencies 21) Tracking of various vehicles (stolen vehicles and special features) Vehicle) 22) Parking fee collection 23) Automatic service charge collection 24) Emergency rescue service due to vehicle abnormality 25) Optimal driving route providing service 26) Public transportation schedule or vehicle location information 27) CNS, GPS, laptop, Interface with various terminals such as PDA and electronic board

That is, the apparatus according to the present invention includes traffic information analysis, processing, black list operation, garage access vehicle management and transaction history integrated management, news and advertisement management functions; It stores various data received from the center server 30 and transmits it to the vehicle-mounted terminal OBE, transmits various data received from the vehicle-mounted terminal OBE to the storage and server, the center server 30 and the vehicle-mounted terminal OBE. Transmitting the data received from the terminal to the terminal for passengers in the stop; Transmitting various data received from the roadside base station apparatus (RSE) to the passenger and driver terminals, and transmitting various data received from the driver terminal to the storage and roadside base station apparatus (RSE); Obtaining passenger bus card information and transmitting card information to an on-board terminal (OBE) and transmitting various data received from the on-board terminal (OBE) to passengers and driver terminals; A function of displaying various data received from a card terminal as an electronic display panel or an LCD; A function of displaying various data and self information received from DSRC communication as a kiosk and various electronic displays; And it can receive a variety of data received from the DSRC communication and card terminal, and the function to communicate the road traffic situation emergency data to the center server 30 and the like.

Referring to FIG. 3, the on-vehicle terminal 10-1 includes a radio transceiver vehicle terminal 11 for communicating with a roadside base station apparatus 20-1, a card terminal 14, a passenger guide 15, and a driver. When the passenger pays the fare with the card, the display board 16 is used to receive card information through the card terminal 14 and transmit the card information to the roadside base station apparatus 20-1, and the roadside base station apparatus 20-1 side. Various information received from the display is displayed on the passenger guide 15 and the driver display panel 16.

Here, a vehicle that is not a bus such as a passenger car or a truck may omit all or a part of components such as a passenger guide 15, a card terminal 14, and a driver detection sign 16 in the configuration of FIG. When passing, wireless charges can be automatically charged by wireless transmission to base station equipment at high speed.

The wireless transmit / receive vehicle terminal 11 includes an RF modulator 12 and a microprocessor 13. The RF modulator 12 includes an RF transceiver amplifier, an up converter, a down converter, an oscillator, a mixer, a filter, and a diplexer. It is implemented with MMIC (Monolithic Microwave Integrated Circuit) that single-chips switch, modulator, demodulator and so on. The microprocessor unit 13 includes a microprocessor, an analog-to-digital converter (AD converter), a digital-to-analog converter (DA converter) encoder, a decoder, various information software, input / output ports, and the like. You may.

In addition, when the present invention is applied to an automatic toll collection system (ETC), the antenna is preferably configured so that a signal is not transmitted to another adjacent vehicle, and the vehicle identification sensor identifies the vehicle type to the microprocessor through the identification information dispenser. Enter it. Accordingly, the differential charging information according to the vehicle model can be sent.

In-vehicle terminals 10-1 to 10-N use a single chip such as a high frequency amplifier for transmission, an up / down converter, a modulator, and a demodulator to reduce the size of the terminal. Can be integrated to minimize the size), and the microprocessor unit transmits and receives a lot of information including an analog-to-digital converter (AD converter), a digital-to-analog converter (DA converter), and a computing device. In addition, when the present invention is applied to the bus, the card terminal 14 is connected to the microprocessor unit 13 when the card is brought close to the card terminal 14 during the ride, and the boarding fee charge signal is sent out, and the information advertisement to the passengers. By connecting the passenger guide 15, the driver indicator 16, and the like to see the back to provide the driver card identification information and the like of the bad user.

Next, the operation of the apparatus according to the present invention configured as described above will be described by dividing the forward path from which the signal is transmitted from the center server to the in-vehicle terminal and the reverse path from the on-vehicle terminal to the center server.

1. Forward Path

The information transmitted from the center server 30 is received by the microprocessor unit 21 of the roadside base station apparatus 20-1 and then encoded by the codec unit 22, and then modulated by the modulation and demodulation unit 23. Up-converted by the radio module 24 is amplified high frequency and then radiated to the air through the antenna 26.

The on-vehicle terminal 10-1 receives the high frequency radio signal through the antenna 17, down-converts and demodulates and decodes the MMIC chip 12, and the microprocessor unit 13 performs the roadside base station 20-. Data received from 1-20-N) are interpreted and displayed on the terminal indicator or transmitted to the passenger guide 15 to display information. In this case, the driver information is displayed on the driver display panel 16 so that the driver can know the information. As described above, the information transmitted through the forward path varies greatly depending on the vehicle or service field to which the present invention is applied.

In addition, the base station vehicle identification signal 25 receives a signal reflected from the vehicle 1 by sending a separate signal such as a laser beam to the vehicle 1 through a sensor 27 or the like, and then detects the shape of the vehicle to identify the vehicle model. This signal is sent to the base station microprocessor 21 for analysis.

2. Reverse path

Various information such as card information input to the card terminal 14, operation (selection) information requested by the driver or passenger, or billing information in the case of a passenger car is formed in a packet of a predetermined format in the microprocessor unit 13 so that the RF demodulation unit ( 12) is radiated to the air and transmitted to the roadside base station.

The roadside base station apparatus 20-1, which controls the vehicle passing point, receives the radio signal transmitted from the vehicle-mounted terminal 10-1, amplifies it in a high frequency low noise amplifier (LNA), and then downloads the radio signal from the radio module 24. After the conversion, the demodulation unit 23 demodulates and decodes the codec unit 22 and transfers the result to the microprocessor 21. The microprocessor 21 receives the decoded data information and transmits the decoded data information to the center server 30 through a dedicated network.

As described above, when the in-vehicle terminal and the roadside base station apparatus of the present invention are applied to an automatic tolling (ETC) system, an active in-vehicle terminal (OBE) and a frequency band of 10 MHz or less are used as compared to the existing toll gate tolling system. A roadside base station device (RSE) can be provided, thereby enabling active two-way communication, which can significantly enable many services anywhere on the highway, in rural roads, in the city, and increase the frequency utilization rate.

As another example, in the case of a bus system to which the present invention is applied (that is, DBS using DSRC technology), it is possible to search for a bad person in addition to the existing simple fare collection function, provide various information to the passenger, and provide various kinds of driving to the driver. Information can be provided, and a variety of additional services can be provided through various information provided in connection with the traffic management center.

The above description is only one embodiment of the present invention and the present invention can be implemented in various modifications. That is, the apparatuses of the present invention may be configured to operate the transmission and reception frequency as a single frequency, or may be configured to vary the transmission and reception frequencies, and may also serve some combination of the above-described functions of the DSRC according to the purpose of the service. have.

1 is a block diagram showing the configuration of an active short-range dedicated wireless communication network system according to the present invention;

2 is a block diagram showing a detailed configuration of a roadside base station apparatus shown in FIG.

3 is a block diagram showing a detailed configuration of the on-vehicle terminal shown in FIG.

* Explanation of symbols for main parts of the drawings

1: vehicle 2: roadside

10-1 to 10-M: on-vehicle terminals 20-1 to 20-N: roadside base station apparatus

30: center server 40: card company

21: microprocessor unit 22: codec unit

23: variation demodulator 24: wireless unit

25: vehicle identification signal 26: antenna

27: vehicle identification sensor

11: radio transceiver 12: RF modulation and demodulation MMIC

13: microprocessor unit 14: card terminal

15: Passenger Guide 16: Driver Detection Signs

17: antenna

Claims (9)

delete delete delete In an intelligent traffic information system (ITS) using an active short-range dedicated wireless communication network (DSRC) having a center server connected to a card company server and providing various traffic information, a card terminal for communicating with a roadside base station device, a passenger guide, When a passenger pays a fare with a card in the driver's display panel and public transportation such as a bus or a taxi, the card information is input through the card terminal and transmitted to the roadside base station, and the various information received from the roadside base station is transmitted. Analysis and control to display on the passenger guide and the driver's detection display panel and a microprocessor that can process the information received in the vehicle, comprising a vehicle-mounted terminal mounted on the vehicle can provide a variety of DSRC services In-vehicle terminals for active short-range wireless networks To The in-vehicle terminal, 1) Providing and managing traffic information on various roads, 2) Metropolitan traffic information management, 3) Freight vehicle operation management, 4) Automatic fare collection by car type, 5) Public transportation fare collection and related card user management, 6) City bus related operation Management, 7) providing basic information (various news, securities, weather, advertisement, etc.), 8) managing dangerous goods vehicles, 9) providing information on sections of decelerating roads, 10) providing information on entering intersections and entering relative vehicles (collisions and risk prevention) , 11) Highway traffic control / linkage, 12) National road / local road traffic information, 13) National road / local road accident management, 14) Traffic information guidance before departure, 15) Highway bus operation management, 16) ECU and CAN module Providing information on automatic diagnosis of vehicle safety using DSRC, 17) Providing railroad crossing entry information, 18) Providing various information in vehicles, 19) Controlling traffic lights for emergency vehicle priority signals, 20) Providing information in case of accidents or emergencies, 21) Various vehicle tracking functions (theft Vehicles and specific vehicles), 22) collection of parking fees, 23) automatic collection of fuel charges, 24) emergency rescue services due to vehicle abnormalities, 25) services for providing optimal travel routes, 26) service schedules or vehicle location information for public transportation 27) may provide at least one or more information functions from a functional group consisting of interface functions with various terminals such as CNS, GPS, notebook computer, PDA, and electronic display board, In the case of servicing the functional group, The in-vehicle terminal is a vehicle-mounted terminal characterized in that the status of the DSRC function being used in real time on the display device so that the driver or passengers can be provided with information in public transportation. 4. The vehicle-mounted terminal and roadside base station apparatus according to claim 3, If you provide automatic tolling (ETC) services An on-board terminal and a roadside base station apparatus for an active short-range wireless communication network, characterized in that the charge is calculated by inputting the output of the vehicle identification signal receiving the sensor signal for identifying the type of vehicle passing through the toll gate to the microprocessor. In an intelligent traffic information system (ITS) using an active short-range dedicated wireless communication network (DSRC) having a center server connected to a card company server and providing various traffic information, a card terminal for communicating with a roadside base station device, a passenger guide, When a passenger pays a fare with a card in the driver's display panel and public transportation such as a bus or a taxi, the card information is input through the card terminal and transmitted to the roadside base station, and the various information received from the roadside base station is transmitted. Analysis and control to display on the passenger guide and the driver's detection display panel and a microprocessor that can process the information received in the vehicle, comprising a vehicle-mounted terminal mounted on the vehicle can provide a variety of DSRC services In-vehicle terminals for active short-range wireless networks To The in-vehicle terminal, 1) Providing and managing traffic information on various roads, 2) Metropolitan traffic information management, 3) Freight vehicle operation management, 4) Automatic fare collection by car type, 5) Public transportation fare collection and related card user management, 6) City bus related operation Management, 7) providing basic information (various news, securities, weather, advertisement, etc.), 8) managing dangerous goods vehicles, 9) providing information on sections of decelerating roads, 10) providing information on entering intersections and entering relative vehicles (collisions and risk prevention) , 11) Highway traffic control / linkage, 12) National road / local road traffic information, 13) National road / local road accident management, 14) Traffic information guidance before departure, 15) Highway bus operation management, 16) ECU and CAN module Providing information on automatic diagnosis of vehicle safety using DSRC, 17) Providing railroad crossing entry information, 18) Providing various information in vehicles, 19) Controlling traffic lights for emergency vehicle priority signals, 20) Providing information in case of accidents or emergencies, 21) Various vehicle tracking functions (theft Vehicles and specific vehicles), 22) collection of parking fees, 23) automatic collection of fuel charges, 24) emergency rescue services due to vehicle abnormalities, 25) services for providing optimal travel routes, 26) service schedules or vehicle location information for public transportation 27) may provide at least one or more information functions from a functional group consisting of interface functions with various terminals such as CNS, GPS, notebook computer, PDA, and electronic display board, The roadside base station apparatus If you provide automatic toll collection (ETC) services, The base station apparatus for the active short-range wireless communication network, characterized in that the antenna of the roadside base station device to prevent the malfunction by using a narrowband antenna without a side lobe to transmit only to the main line, but not to other adjacent line vehicles. . delete In an intelligent traffic information system (ITS) using an active short-range dedicated wireless communication network (DSRC) having a center server connected to a card company server and providing various traffic information, a card terminal for communicating with a roadside base station device, a passenger guide, When a passenger pays a fare with a card in the driver's display panel and public transportation such as a bus or a taxi, the card information is input through the card terminal and transmitted to the roadside base station, and the various information received from the roadside base station is transmitted. Analysis and control to display on the passenger guide and the driver's detection display panel and a microprocessor that can process the information received in the vehicle, comprising a vehicle-mounted terminal mounted on the vehicle can provide a variety of DSRC services In-vehicle terminals for active short-range wireless networks In, The vehicle mounted terminal A high-frequency part, a modulation / demodulation part, and a frequency converting part are MMICized, and have a miniaturized size by attaching a microprocessor software chip that enables a large amount of information transmission and reception. In an intelligent traffic information system (ITS) using an active short-range dedicated wireless communication network (DSRC) having a center server connected to a card company server and providing various traffic information, a card terminal for communicating with a roadside base station device, a passenger guide, When a passenger pays a fare with a card in the driver's display panel and public transportation such as a bus or a taxi, the card information is input through the card terminal and transmitted to the roadside base station, and the various information received from the roadside base station is transmitted. Analysis and control to display on the passenger guide and the driver's detection display panel and a microprocessor that can process the information received in the vehicle, comprising a vehicle-mounted terminal mounted on the vehicle can provide a variety of DSRC services In-vehicle terminals for active short-range wireless networks In, The vehicle mounted terminal In the case of non-public transportation buses such as cars or trucks, all or part of the components such as passenger guides, card terminals, and driver indicators are omitted, and the toll is automatically charged to the base station when the highway toll gate passes at high speed. On-vehicle terminal characterized in that the sales information can be viewed on the indicator board.