DE19941049A1 - Data recorder for vehicle has data acquisition unit and data storage module; acquisition unit contains position location module with satellite-supported position detection system - Google Patents

Abstract

The data recorder has a data acquisition unit and a data storage module. The data acquisition unit contains a position location module with a satellite-supported position detection system, e.g. a Global Positioning System or GPS, and a rotation rate sensor or gyroscope. It can contain at least one, especially. three, acceleration sensors for three directions in space.

Description

Technical field

The invention relates to a data recorder for a motor vehicle with a Data acquisition unit and a data storage module, according to the Preamble of claim 1.

State of the art

A data recorder for a motor vehicle is also called a "black box" and is a device for recording various data of the force vehicle, such as information regarding speed, Acceleration, engine, lights, turn signals etc., which later, for example can be used to reconstruct an accident similar to air accidents. Conventional data recorders are as designed additional devices and need to record ver equally little information very many sensors and additional Wiring. A data retrofit is accordingly korders complex and costly.

Presentation of the invention, task, solution, advantages

It is an object of the present invention to provide an improved data to provide korder of the type mentioned above, which the eliminates the above disadvantages and the detection in a simple manner and storage of a variety of parameters allowed.

This task is carried out by a data recorder of the above. Kind with those in An claim 1 marked features solved.  

For this, it is the above-mentioned with a data recorder. Type according to the invention see that the data acquisition unit comprises a location module.

This has the advantage that information can be obtained in a simple manner Location, speed, acceleration and direction of travel in simple Can be determined in this way and without complex sensor technology in the motor vehicle and can be saved. In particular, the parameter "direction of travel" is one additional, previously unrecognized component, what additional up can provide conclusions about the course of an accident.

Further developments of the data recorder are preferably in the An sayings 2 to 9 described.

For an accurate and easy to implement position detection, Direction and speed, the locating module includes a satelli based position detection system, especially the Global Posi tioning system (GPS).

For detecting rotary movements of the motor vehicle, this includes Locating module a rotation rate sensor or gyro.

The locating module includes for detecting linear accelerations at least one, in particular three, acceleration sensors for three Directions in space.

To process and store sensor data, the Or a microprocessor and a data storage.  

The locating module includes for connection to the data storage module an interface.

This includes data for querying a memory in the data storage module memory module an interface for an external readout device.

The location module expediently comprises an interface to the Connect to a navigation system.

Brief description of the drawings

The invention will now be described in more detail with reference to the accompanying drawing explained. This shows a schematic block in the single figure circuit diagram of a preferred embodiment of an inventive Data recorder.

Best way to carry out the invention

The preferred embodiment of a data recorder 100 according to the invention shown in the single figure comprises a data acquisition unit in the form of a location module 10 and a data storage module 12 , which is also referred to as a "black box". The data acquisition unit 10 includes the following components: a satellite-based position detection system (GPS) 14 with a receiving antenna 16 for detecting a current position and driving speed, a gyro system 18 , such as a mechanical gyroscope or a piezo rotor, for detecting rotary movements of the motor vehicle, where appropriate three gyro systems for three axes in space are also provided, acceleration sensors 20 , 22 and 24 for detecting linear accelerations in the three spatial directions, a microprocessor 26 , a data memory 28 and an interface 30 .

The sensors 14 , 18 , 20 , 22 and 24 are connected to the microprocessor 28 and pass corresponding data relating to location, speed, rotary movements and linear accelerations to them. The microprocessor may process this data in a suitable manner and store it in the data memory 28 and / or pass it on to the interface 30 . Data stored in the data memory 28 can be read out again by the microprocessor 26 on request.

The data storage module 12 is connected to the interface 30 of the locating module 10 and has a memory 32 and an interface 34 for an external reading device 36 . The memory 36 of the data memory module 12 is, for example, in the form of a continuously operated serial memory which contains data of, for example, the last 10 minutes. In the event of an accident, the sensors 18 to 24 detect corresponding accelerations which are too large for a conventional traffic situation and too unusual in their combination, whereupon an accident can be concluded. This determines the microprocessor 26 and then adjusts the continuous storage of data so that, for example, the data of the last 10 minutes before the accident occurs and can be called up via the readout device 36 if necessary in a judicial manner. This means that the data can only be accessed by certain people and cannot be falsified.

Optionally, at least some data, such as speed and direction of travel, are permanently readable on a display, for example the display device 40 of the navigation system 38 .

At the interface 30 of the locating module 10 , a navigation system 38 with a display device 40 is also connected, which uses the data from the locating module 10 for route calculation and route guidance.

Claims (9)

1. Data recorder ( 100 ) for a motor vehicle with a data acquisition unit and a data storage module ( 12 ), characterized in that the data acquisition unit comprises a location module ( 10 ). 2. Data recorder ( 100 ) according to claim 1, characterized in that the locating module ( 10 ) comprises a satellite-based position detection system ( 14 , 16 ), for example a global positioning system (GPS). 3. Data recorder ( 100 ) according to claim 1 or 2, characterized in that the locating module ( 10 ), a rotation rate sensor or a gyro ( 18 ). 4. Data recorder ( 100 ) according to one of the preceding claims, characterized in that the locating module ( 10 ) comprises at least one, in particular three Be acceleration sensors (20, 22 24) for three directions in space. 5. Data recorder ( 100 ) according to one of the preceding claims, characterized in that the locating module ( 10 ) comprises a microprocessor ( 26 ). 6. Data recorder ( 100 ) according to one of the preceding claims, characterized in that the locating module ( 100 ) comprises a data memory ( 28 ). 7. Data recorder ( 100 ) according to one of the preceding claims, characterized in that the locating module ( 10 ) comprises an interface ( 30 ) for connecting to the data storage module ( 12 ). 8. Data recorder ( 100 ) according to one of the preceding claims, characterized in that the data storage module ( 12 ) comprises an interface ( 34 ) for an external reading device ( 36 ). 9. Data recorder ( 100 ) according to one of the preceding claims, characterized in that the locating module ( 100 ) comprises an interface ( 30 ) for connecting to a navigation system ( 38 , 40 ).