EP1271448A1 - Method for a tachograph of a vehicle using a radio communication system - Google Patents

Abstract

The method involves detecting specific data re the surroundings, movement and/or location of the vehicle during its operation and recording it in a memory (M,SM) for later processing as required. At least part of the specific journey log data is transmitted and/or received via a radio interface (V1;V2;VB) of a radio-assisted memory device (MS1-MS3) in the vehicle. AN Independent claim is also included for the following: a journey log and a communications system for recording journey log data for a vehicle.

Description

The invention relates to a method for recording of tachograph data of a vehicle with the generic terms Features of claim 1 and a tachograph or a communication system to carry out of such a process.

For recording operating data or accident data of moving Objects, such as airplanes, motor vehicles or trains, tachographs and accident data recorders are generally known. DE 197 20 348 A1 describes an optical device Recording of the vehicle environment described at which is an optical recording device by means of a proximity sensor is always activated when by the proximity sensor the penetration of an object into the vicinity of the vehicle surroundings is recognized. The recorded data are in stored in a memory that is installed in the vehicle. An accident data recorder is thereby formed.

This system has serious disadvantages in that one Images or sequences of images taken by the camera only within of the vehicle can be saved. In an accident if the driver escapes it is to determine the opponent of the accident in such a system, its vehicle registration number required recorded on one of the images with sufficient quality becomes. However, this is only the case if the recording camera towards the other vehicle like this is directed that its license plate is recorded can. Another problem with such a system is that the backed up data within the receiving Vehicle can be saved. Because data manipulation Such data cannot be completely excluded therefore only conditionally usable as evidence preservation.

A system is generally known under the term telematics, the exchange of information also between motor vehicles allows. The data exchange between two vehicles or a vehicle and a fixed station thereby via a radio interface. Increasingly telematics become part of the vehicle equipment develop. Drivers can drive while driving receive general or security-related information, for example about road conditions, traffic jams or City maps of the currently used location. Furthermore, the transfer also other relevant information for the driver possible. In addition to entertainment (entertainment) is hence in particular the so-called infotainment with current information, of importance.

The object of the invention is to provide a method or a device for recording tachograph data or to improve driving parameters of a vehicle.

This task is accomplished by a method of recording Tachograph data of a vehicle using a radio communication system according to the features of the claim 1 or by a tachograph or a radio communication system for performing such a procedure with the features of claims 9 and 10 solved.

The transmission of tachograph data from a vehicle a radio interface to a storage device separate from the vehicle offers particular advantages in securing evidence in case of an accident. The saved ones Data cannot be destroyed by the accident itself, such as a paper tachograph sheet a fire caused by the accident, can still Tachograph data subsequently in the external memory be manipulated.

In addition to being able to use the tachograph at any time read out and in an accident the cause of the accident at insurance companies to reconstruct, there is also the possibility this data of the tachograph z. B. in court as To be able to use evidence.

Especially in case of billiards in the fog or on black ice with a large number of such tachograph data are involved a valuable tool for clarifying the Accident happened. Ideally, data from a large number or All vehicles involved in the accident are in one memory with corresponding chronologically comparable data of the Data of other vehicles saved.

In addition to the advantages of such a procedure, the corresponding offer Advantages also tachograph and memory as well the other necessary facilities or a communication system for performing such a procedure.

Advantageous configurations are the subject of dependent Claims.

The relevant for the tachograph are advantageously Data not only via a radio interface to one transferred to another facility, but also in a remote one Memory saved. Such a remote storage can both in a fixed station along one Route of a vehicle can be arranged as well as in one more distant central computer of a communication network or a stranger connected to the fixed station Network.

Since there is not a corresponding fixed reception and Storage stations are available, in particular the possibility of the tachograph data via the radio interface also transfer to other vehicles and save there. This means that the data is not at one Involved in or involved in an accident Vehicles are stored and are therefore as for the driver not immediately accessible and therefore not falsified data backed up. Also in the event of a vehicle fire or mechanical damage to the storage medium The advantage is that the tachograph data not only in their own tachograph memory but also stored in another external trip memory become.

The data is expediently exchanged via a Radio interface of a cellular radio communication system, for example according to the GSM standard or the UMTS, one Radio data network, for example according to the Hiper LAN standard, or a radio ad hoc network. The latter exists advantageously the possibility of transmission also in more remote regions where cellular or regional Radio networks not provided or only provided with insufficient coverage are.

Data relevant for tachographs can be used in addition to the usual ones Data such as speed and acceleration data advantageously also current location or position data can be stored, which is determined, for example, using GPS can be. The data of several people involved in an accident Vehicles know directly if they know the location data Conclusions about relative speeds and the like to. Acoustic and / or optical can also expediently be used Data is captured and recorded, as is data of various other sensor devices for determining the current distance to other objects.

The data acquisition takes place during vehicle operation, too compared to the stand in a workshop, of course Parking in a parking lot is also included.

It is also advantageous to transfer data via the interface remote storage that transmit an identification of the vehicle or the driver. Such Data from a volatile vehicle just before or after an accident on a clear road or unobserved transferred to an external memory in a parking lot were later used to determine the cause of the accident involved and volatile vehicle or driver become.

In order to reduce the amount of data to be saved to a reasonable To limit the scope, the data is advantageously cyclical overwritten or deleted. In case of an accident becomes such a record of the last cyclic sequence automatically saved or at least not overwritten or not deleted.

Advantageously, the data can also be recorded after the transmission or failure of a security signal activated or saved. The transfer of such Security signal is particularly remote Record important to overwrite the data after to prevent an accident. Conversely, a backup signal can also be used continuously transmitted to storage of the data, whereby after the removal of the Backup signal by, for example, an accident another Data storage and in particular further data overwriting or data deletion is stopped automatically.

Fig. 1

mehrere Fahrzeuge, die miteinander Kommunizieren und

Fig. 2

schematisch einzelne Einrichtungen der kommunizierenden Fahrzeuge und Vorrichtungen.

An embodiment is explained below with reference to the drawing. Show it:

Fig. 1

several vehicles communicating with each other and

Fig. 2

schematically individual facilities of the communicating vehicles and devices.

As can be seen from Fig. 1, a variety of vehicles A1, A2, A3 mobile stations MS1, MS2, MS3 on the one Enable communication with each other via radio interfaces V1, V2. Mobile communication is also possible Stations MS2 with stationary stations BS via corresponding ones VB radio interfaces.

Such fixed stations BS can be completely independent Stations of a so-called ad hoc network can be but also train radio stations in a network. Next The use of an ad hoc network is also the use of an Radio communication system possible, for example according to the GSM or the UMTS standard (GSM: Global System for Mobile Communication; UMTS: Universal Mobile Telecommunication System). Radio-based networks can also be used as radio communication networks Data networks (W-LAN: Wireless Local Area Network) used become. In particular, the use of other communication systems possible, for example the Internet IP.

The data exchange between the individual stations MS1, MS2, MS3, BS can be circuit switched or packet oriented Connections are made. In particular, the exchange of information is also via, for example, short messages SMS (Short Message System) possible. The technical ones can also be used Possibilities using radio based application protocols (WAP: Wireless Application Protocol) in the cellular radio communication systems are offered to z. B. via a certain Internet address (URL) to current Access road condition reports.

The use of ad hoc networks offers particular advantages, if following traffic, for example, after an accident or the surrounding traffic of this accident should be timely to other vehicle drivers To allow braking. While in cellular mobile radio systems each a complex line construction between two participants must be done in order to subsequently receive information from one participant to one or more other participants Ad hoc networks offer the possibility of being able to transmit a direct transfer of information to other participants or stations in the transmission area. Instead of the transfer The information can be accessed via a large number of network devices in ad hoc networks, more or less directly between the stations involved can be exchanged. this makes possible especially faster reactions of subsequent ones Vehicles on a previous accident. In particular is transmission via several intermediate stations is also possible.

To carry out a method for recording travel parameters are one or more storage devices in the entire system M provided. These are relevant to driving Parameters of one or more vehicles A1, A2, A3 stored. This enables the recorded ones to be read out Data at a later time, for example a To be able to determine the cause of the accident or a person who caused the accident. If the data is saved on one of the parties Parties inaccessible location or secure storage SM, so can advantageously also use the data as evidence Dish can be used.

As can be seen from FIG. 2, in a first vehicle A1 advantageously a mobile station MS1 with a control device C to control the data exchange and the radio interface and with a memory M for storing Operating parameters set up for radio operation. The connection of control device C and memory M can have a direct connection or a bus BUS. advantageously, can also connect other facilities to such a bus be connected, such as a switch for Press the horn L of the vehicle, which activates the Systems when pressing the horn allows a camera P to Record individual or sequential images as well as one Many different sensor devices S. Such Sensor devices S can, on the one hand, devices for determining and recording parameters, for example the distance to surrounding objects, or to trigger an action be, for example acceleration sensors or the like, to record an accident and provide instructions at the beginning of a transfer of data or a fixed storage of being able to trigger data. Recordable parameters In addition to pictures, there are, in particular, distances to others Objects or vehicles, the speed or acceleration of your own vehicle as well as relative speeds or relative accelerations compared to others Objects. For example, noises can also be recorded, to provide acoustic warning signals afterwards to be able to be delivered by the driver or possibly himself have been overlooked.

To determine the vehicle position or other movement and GPS devices (GPS: Global Positioning System) provided in the vehicle and on the in-vehicle communication system can be connected. The distance to another vehicle can either by appropriate distance sensors with an echo sounder function, for example or by exchanging position data between two vehicles via the radio interface V1 or V2 take place between these.

Appropriate facilities are advantageously located in any vehicle, however, are for the simplest embodiment not required in every vehicle. In addition to data transmission between different vehicles with the mobile Stations MS1, MS2 or MS3 via the radio interfaces V1 or V2 is also a data exchange to stationary stations BS possible via appropriate radio interfaces VB. in the In the simplest case, such stationary stations BS can be used a pure receiving device, a control device C and a storage device M.

In addition to operating parameters for this fixed station BS can in the storage device M advantageously also data stored in this stationary station BS are stored become. This gives the possibility of a vehicle A2 the data collected by him about the vehicle A2 provided mobile station MS2 and the radio interface VB transmits to the fixed station BS to get the data there to be saved. While already saving the diverse determined by the vehicle devices L, P, S. Data inside the vehicle in the vehicle's memory M such an external storage is advantageous in the memory M of the base station or stationary station BS Advantage that this data becomes one by the vehicle driver cannot be manipulated later and can therefore be used for evidence purposes.

Advantageously, the fixed station BS Transmitters for active data exchange with passing vehicles Vehicles and sensor devices S or camera devices P can be arranged to even at such stations enable the collection of various types of data.

Such a fixed station advantageously has also an interface to a data network with other such Stations or the Internet IP. This allows the fixed station BS on the one hand for general supply of passing vehicles with general information are used and on the other hand also data that the fixed Has received station of vehicles at a central Forward device within the network IP. In particular can also be a more secure area of such a network Memory SM can be set up in the general traffic-relevant Data to preserve evidence or to prepare various Statistics can be saved.

The data exchange between two vehicles can advantageously optionally as a dependency on current operating conditions to be controlled. This can be a frequent exchange of data between two vehicles A1-A2; A2-A3 or between Vehicles A2 and stationary stations BS are initiated, if the distance between two vehicles or one Vehicle and a fixed object below certain Thresholds reduced. Furthermore, the exchange of information also be increased when the speed of the Vehicle is above certain thresholds or one excessive negative acceleration at z. B. full braking is recorded.

The exchange of vehicle-specific is particularly advantageous Data to provide an identity number for the stored values of your own vehicle or others, possibly on one To be able to save the accident involved vehicles. such Identifying data can be registered data, for example Identification number, the official vehicle registration number or an access number of the mobile station MS1, MS2, Be MS3, e.g. B. their assigned IP address. In the case of one Accidents can therefore not only include data relevant to driving technology but also related vehicle data are reconstructed. Alternatively or additionally, identification data can also be used stored with respect to the driver. Corresponding personal data can be used a personal key in conjunction with a corresponding one Reader, an input of a code word via a Keyboard or input using a magnetic card reader be provided.

In addition to the transmission of data recorded in the vehicle via the mobile station MS1 - MS3 can also use any data other interface, e.g. B. infrared interface or cable-bound interface, from the vehicle-bound Communication system can be read out.

According to a particularly preferred embodiment, the Data recorded in a vehicle in its memory M cyclically cached and only in the case of a given Event via the radio interface to an external Transfer memory. As a triggering event, for example an accident detected by acceleration sensors or a short distance from another object be determined.

According to an alternative embodiment, however also be stipulated that the data is continually at one external memory M, SM transferred and stored there and be cyclically deleted or overwritten. The latter solution makes sure that a transmission even with a heavy Accident with failure of the mobile station MS1 - MS3 is still sufficient can be done.

To back up stored in the external device Data even in a critical driving situation enable or delete or overwrite such data can also prevent a corresponding trigger signal transmitted to the external device, for example a fixed storage of the last few seconds recorded data. Such a trigger signal can either by a specific command from the driver via a corresponding signaling button or automatically detected in certain critical driving situations Signals from an acceleration sensor or the like take place.

Variants with various types of detection devices are also possible Kind, being even the communication system or the communication device can be set up as such can. For example, can also be used without additional detection devices relative distances are determined, e.g. about time offset measurements (Timing Advance measurements).

Vehicles in the above sense are largely moving Objects, in particular motor vehicles, trucks, Airplanes to paragliders, rail-bound vehicles and water vehicles, but also motor-independent vehicles like bicycles and the like.

Claims (10)

Method for recording tachograph data of a vehicle (A1; A2; A3), in which specific data of the surroundings, the movement and / or the location of the vehicle during its operation is recorded and recorded in a memory (M; SM) for later processing as required characterized in that at least part of the specific tachograph data is transmitted and / or received via a radio interface (V1; V2; VB) of a radio-supported device (MS1; MS2, MS3) of the vehicle (A1; A2; A3) for storage. The method of claim 1, wherein
at least part of the tachograph data after the transmission via the radio interface (V1; V2; VB) is stored in a memory (BS-M; SM) outside the vehicle (A1; A2; A3). The method of claim 1 or 2, wherein
Tachograph data recorded or present in a vehicle (A2) for transmission in the memory (M) of another vehicle (A1; A3) are transmitted via the radio interface (V1; V2). A method according to any preceding claim, in which
Current position data, speed data, distance data, acceleration data, acoustic and / or optical data are recorded and stored as tachograph data. A method according to any preceding claim, in which
identification data which identify the vehicle and / or the driver are transmitted and stored as tachograph data. A method according to any preceding claim, in which
a radio interface (V1, V2, VB) of a cellular radio communication system, a radio data network or a radio ad hoc network is used as the radio interface. Method according to one of the preceding claims, in which cyclically overwrites the recording of the data in the memory (M; SM) or is deleted. Method according to one of the preceding claims, in which the recording of the tachograph data in the memory (M; SM) after transmission or failure of a security signal activated or secured against deletion or overwriting becomes. Tachograph with at least one memory (M; SM) for storing tachograph data of a vehicle (A1; A2; A3), marked by a radio interface connection to a radio interface (V1; V2; VB) for receiving the tachograph data from at least one vehicle that is moving or is independent of the location of the memory (M; SM). Communication system for recording tachograph data with at least one vehicle (A1; A2; A3) which has a radio communication device (MS1; MS2; MS3), at least one further radio communication device (MS1; ...; BS) that can communicate with the radio communication device of the vehicle via a radio interface (V1; V2; VB) and is spatially separated from the vehicle, at least one detection device (L; P; S; GPS) for detecting specific data of the vehicle and / or relative to the vehicle, in particular of its movement and / or its surroundings, at least one storage device (M; SM) for storing the acquired data, in which, the storage device (M; SM) is spatially separated from the at least one vehicle and has a storage space for tachograph data which are related to at least one vehicle or its surroundings and which are via the radio interface (V1; V2; VB) from the vehicle to the Storage device are transferred.

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