JPH1173594A - Method and telematique device for generation and transmission of data concerned in traffic state - Google Patents

Abstract

PROBLEM TO BE SOLVED: To evade the excessive load of a telematique device incorporated in an automobile on a communication network by sending only data which are not included in stored data or only data including alterations of the stored data. SOLUTION: Traffic information is received through an antenna 1 and a traffic radio receiver 2 and a central processing unit 3 records the traffic information in a memory 4. A GPS receiver 5 is used to detect the current position of the automobile. The central processing unit 3 relates current traffic information stored by using location codes to geographical data to which the location codes are assigned. When data generated through a sensor 7 connected to a traffic state which is not reported yet or causes alterations of the traffic information, a report corresponding to them is generated and sent to a central station through a GSM transmitter 9 and a GSM antenna 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for creating and transmitting data relating to traffic conditions, wherein said data is created on a vehicle board side using a sensor (7) and includes central information together with positional information. A method for generating and transmitting data relating to traffic conditions in a form in which said data is evaluated and used to generate traffic information.

The invention also provides an input for connection to a sensor, an input for coded received traffic information having a location code, and an input for signals of a position detection device (navigation device). And a transmitting device for transmitting data detected from the sensor signal to the central office.

[0003]

2. Description of the Related Art At present, there is no satisfactory concrete system for notifying traffic information. This is because it takes a significant amount of time before the relevant traffic conditions are reported and communicated through the broadcaster. In this case, many drivers miss the report of traffic information. This is because, for example, at that time, for example, the car radio is turned off, or a broadcast station that does not transmit traffic information is set.

[0004] Such problems can be overcome by devices for traffic radio channels. The device stores the last traffic information in the memory so that it can be heard at any time. In this case, in this memory, the newly arriving notification information causes the oldest stored notification information to be erased from the memory (First-In-First-Out).

[0005] For example, in a search section, a sensor provided on a road, particularly an expressway, attempts to detect the average traffic congestion and speed, and is notified to the central office. The central office creates traffic information from the detected data.

The following considerations are additionally or alternatively known. That is, it is known that the position, the traveling speed, and the traveling direction are notified from a direct traffic condition using a traffic telematic terminal device provided in a vehicle (Mannesmann's 1996 public relations magazine, public address on the Internet). http://www.mannesmann.de.
/fakten/1996/forschung.htm≠automotive). A satellite-assisted global positioning system GPS is used for position detection, and a flat GSM mobile radio network is used for information transmission to the central office. The data relating to "travel speed and direction" can be received from GPS data and preferably also from steering sensors, or from tachometer sensors or ABS system wheel sensors. In this way, traffic data can be immediately transmitted from the participant involved in the traffic to the central office. In any case, the transmission of the data must be based on a fixed time pattern or on a predetermined event (for example, a drop in the minimum driving speed for a minimum duration). Since connection of data is required for data distribution (for example, a GSM network), when traffic congestion occurs, that is, when the vehicle traveling speed is generally low, a remarkably large number of distributions are inevitably made. Or at least tried. This FCD
Under the desired size extension of the (Floating-Car-Data-Verfahren) scheme, the notification of telematic devices has a significant effect on the availability of the communication network. Therefore, in some cases, the functionality itself of the FCD method is also questioned.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to avoid overloading the telecommunications network by a telematic device incorporated in a motor vehicle.

[0008]

SUMMARY OF THE INVENTION According to the present invention, there is provided, in accordance with the present invention, traffic information received by a vehicle receiver and stored according to its type and location, and the data stored at a current location prior to transmission to a central office. In consideration of the above, only the data not included in the stored data or only the data containing changes to the stored data are compared with the contents of the stored traffic information and sent to the central office. Resolved by sending.

According to the method of the invention, the data obtained by the sensors is not immediately transferred to the central office, but rather if the data may have significance for the traffic situation. , A status check is performed relative to the data which is present in the central office and has already been notified in the form of traffic information. If the data generated inside the vehicle contains new information for the stored traffic information, a transmission to the central office using the telematic device is triggered. In this case, it is desirable that traffic information be transmitted on a unique channel. Thereby, it can be received and stored quickly and automatically from a receiver in the motor vehicle. Therefore, the method of the present invention avoids a large number of non-redundant data transmissions to the central office by a large number of traffic users, thereby minimizing the load on the communication network due to the transmission of traffic data. Can be

Therefore, the data regarding the location of the traffic condition to be notified can include not only scattered location data but also a wide range of data of a planar or section section shape.

It is particularly advantageous for the implementation of the invention that traffic information is transmitted and stored in a standardized code. In this case, the data supplied by the sensors is assigned to the corresponding part of the coded traffic information, and the current position of the vehicle is compared by the localization indicated in the traffic information. Thus, it is possible to check whether or not the current traffic condition data formed for transmission to the central office is included in the already stored traffic information, without incurring great cost.

[0012] In order to reduce the capacity of the receiver memory in the vehicle for traffic information, it is advantageous for the storage in said receiver to select information on the relevant location and the current vehicle position. Is performed. If, for example, a vehicle is currently moving towards Kassel, the realization of traffic information about Karlsruhe does not seem to be useful for this vehicle. Therefore, there is no need to store traffic information relating to information on areas far from the current location of the vehicle.

According to the invention, in order to solve the above-mentioned problems, a telematic device of the type mentioned at the outset has a memory for storing coded received traffic information, The position of the, a comparison device that compares the location code of the stored traffic information, a data, a correlation device that correlates the content of the stored traffic information, by the correlation device,
A configuration is provided that includes a control unit of a transmission device that transmits only data that has not been noticeably or implicitly identified as a component or a change component of the stored traffic information.

The comparison between the current position and the location code is made possible by a conversion algorithm. Advantageously, however, a memory with a location table is provided for associating the location determined by the location device with the location code.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail with reference to the drawings.

The illustrated device receives traffic information via an antenna 1 and a traffic radio receiver 2. This is preferably transmitted via the traffic information channel of the broadcaster or the mobile radio channel currently available to the mobile radio service provider.
The traffic information preferably contains data on the type of message and the localization code, for example coded according to ALERT C-Protokoll. Central processing unit 3 of this device
Also records traffic information in the memory 4. This memory 4 thereby contains all current traffic information (at least as far as that information is relevant for the current position of the vehicle).

To detect the current position of the vehicle, GP
An S receiver 5 is used. The receiver 5 can calculate the position based on a signal from a satellite. In some cases, this position detection is made more precise using signals from certain sensors of the vehicle, such as ABS sensors or steering system sensors.

The connection module 6 is further connected to the central processing unit 33. This module accepts a series of output signals from sensors 7 and signals from vehicle bus 7 '. The central processing unit 3 includes the connection module 6
Are processed into traffic-related signals and are assigned to corresponding parts of the coded traffic information. At the same time, the position formed by the GPS receiver 5 is associated with the received data. In this case, geographic data is assigned to the location code. This location code is supplied from the location table 8.

In the central processing unit, the data formed as described above and assigned the location code is associated with the current traffic information stored under the location code. If this data corresponds to the current traffic information, nothing is triggered.
If, however, the data generated via the sensor 7 corresponds to an unreported traffic situation or changes stored traffic information, for example, the elimination of the reported congestion can be confirmed. If so, a corresponding report is formed and this report is
The information is transmitted to the service provider constituting the central office via the SM transmitter 9 and the GSM antenna 10.

Advantageously, in particular for the identification of the resolution of traffic jams, the current traffic message stored in the memory 4 is monitored in connection with the location code and the geographical data belonging to the location code is monitored. Is approached using the GPS receiver 5. If the situation based on traffic information no longer exists, a corresponding correction report is transmitted via the GSM antenna.

The traffic information stored in the memory is considered to be most meaningful within the framework of the present invention. That is, for example, environmental data related to traffic, fog, rainfall, temperature change, and the like. For this reason, information sensors that have not been used for observation up to now are also listed as sensors 7 for creating data related to traffic. For example, the operation of the light switch in the daytime becomes information to notify fog or rainfall, and the slip sensor of the ABS sensor freezes, snows,
It can be information on slippery road conditions such as rain.

Of course, according to the present invention, it is also possible to perform a process of interpolating traffic report information from other sources, for example, data from a vehicle-specific sensor.

[Brief description of the drawings]

FIG. 1 is a diagram showing a basic configuration for implementing a method according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Antenna 2 Traffic radio receiver 3 Central processing unit 4 Memory 5 GPS receiver 6 Connection module 7 Sensor 8 Location table 9 GSM transmitter

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Wolfgang Bayard Germany Remsharden Ina-Seidel-Strase 9

Claims (6)

[Claims] 1. A method for creating and transmitting data relating to traffic conditions, said data being created on a vehicle board using a sensor (7) and transmitted to a central office together with location information. And wherein the data is evaluated and used to generate traffic information, wherein the traffic information is received by a vehicle receiver (2) and stored according to its type and location, and the data is transmitted to a central office. Before comparing the data with the stored traffic information, taking into account the current location,
The creation and transmission of traffic-related data, characterized in that only data not contained in the stored data or only data containing changes to the stored data are transmitted to the central office. Way for. 2. The traffic information is transmitted and stored in a standardized code, the data supplied from the sensor (7) is assigned to the corresponding part of the coded traffic information, and the current position of the vehicle is determined by the traffic. The method for creating and transmitting data related to traffic conditions according to claim 1, wherein the comparison is made by localization indicated in the information. 3. The method according to claim 1, wherein the transmission of the traffic information takes place in a transmission network powered by a central office. 4. The received traffic information relating to the relevant location and the current location of the vehicle is selected for the storage.
4. A method for creating and transmitting data relating to traffic conditions according to claim 1. 5. An input for connection to a sensor (7), an input for coded received traffic information having a location code, and an input for a signal of a position detection device (5). In a telematics device for a vehicle having a transmitting device (9, 10) for transmitting data detected from the sensor signals to a central office, a memory (4) for storing coded received traffic information. A comparing device (3) for comparing the current position with the location code of the stored traffic information; and a correlating device (3) for correlating the data with the contents of the stored traffic information. And (9) and (10), wherein the correlating device transmits only data that has not been noticeably or implicitly identified as a component or a change component of the stored traffic information.
And a controller (3). 6. A method for associating a position obtained by the position detecting device (5) with a location code,
6. Telematic device according to claim 5, wherein a memory (8) with a location table is provided.