Method and device for the plotting of scanned information, in particular operating data for a motor vehicle

• US 20040024497A1
• Filed: 08/04/2003
• Published: 02/05/2004
• Est. Priority Date: 08/26/2000
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Grimm, Wolfgang
• Granted Patent: US 6,895,311 B2
• Time in Patent Office: Days
• US Class Current: 701/1
• CPC Class Codes: G06T 11/206 Drawing of charts or graphs

Abstract

The present invention relates to a method and a device for recording the curve (12) of information. The information is scanned using a specifiable scanning period. The information is specifically the operating data of a motor vehicle. The scanned information is subjected to a data reduction, and then the reduced information is stored. To record the curve (12) of relevant digital information, in particular, of the operating data of a motor vehicle, so as to use the least possible storage space, it is proposed that, in the context of the data reduction, the curve (12) of the scanned information be viewed in a time raster of a multiple of the scanning period, and, within the individual raster increments (13), at least one characteristic variable (14, 15, 16) of the curve (12) of the scanned information be determined. The device is advantageously a component part of a control device (1) for controlling/regulating specific motor-vehicle components or of an operating- or accident-data recorder (2) of a motor vehicle.

Claims

1. A method for recording the curve (12) of information scanned using a specifiable scanning period, especially of the operating data of a motor vehicle, in which the scanned information is subjected to a data reduction and the reduced data are stored,

wherein, in the context of the data reduction, the curve (12) of the scanned information is viewed in a time raster of a multiple of the scanning period, and, within the individual raster increments (13), at least one characteristic variable (14, 15, 16) of the curve (12) of the scanned information is determined.

2. The method as recited in claim 1,

wherein, as a characteristic variable of the curve (12) of the scanned information, the maximum values (14) and/or the minimum values (15) of the scanned values within the raster increments (13) are determined.

3. The method as recited in claim 1 or 2,

wherein, as a characteristic variable of the curve (12) of the scanned information, the average value (16) of the scanned values within the raster increments (13) is determined.

4. The method as recited in one of claims 1 through 3,

wherein the raster increments (13) are selected so as to be identical in size.

5. The method as recited in one of claims 1 through 3,

wherein the raster increments (13) are selected so as to vary as a function of further characteristic variables of the curve (12) of the scanned information within one raster increment (13).

6. The method as recited in claim 5,

wherein the raster increments (13) are selected so as to vary as a function of the standard deviation of the scanned values of the curve (12) of the information within one raster increment (13).

7. The method as recited in claim 6,

wherein the raster increments (2) are selected so as to be so small that the standard deviation does not exceed a specifiable value.

8. The method as recited in claim 5,

wherein the raster increments (13) are selected so as to vary as a function of the distance of the maximum value (14) or of the minimum value (15) from the average value (16) of the scanned values within one raster increment (13) of the curve (12) of the information.

9. The method as recited in claim 8,

wherein the raster increments (13) are selected so as to be so small that the distance does not exceed a specifiable value.

10. A control element (3, 8), in particular, a read-only memory (ROM), including an EPROM or an EEPROM, a random-access memory (RAM), including a FeRAM, or a flash memory, for a control device (1) for controlling/regulating certain motor-vehicle components or for an operating recorder or accident-data recorder (2) of a motor vehicle, on which a program is stored, which can be executed on a computing device, in particular on a microprocessor (4, 9), and which is suited for carrying out a method as recited in one of claims 1 through 9.

12. The device as recited in claim 11,

wherein the device has means for carrying out the method as recited in one of claims 1 through 9.

15. A computer program having program code means, to carry out all the steps of at least one of claims 1 through 9, if the computer program is executed on a computer.

16. A computer program product having program code means, which are stored on a data carrier that can be read by a computer, to carry out the method as recited in at least one of claims 1 through 9, if the computer program product is executed on a computer.

11. A device for recording the curve (12) of information scanned using a specifiable scanning period, in particular, of the operating data of a motor vehicle, the device having means for the data reduction of the scanned information and means for storing the reduced data, wherein the means for the data reduction views the curve (12) of the scanned information in a time raster of a multiple of the scanning period, and, within the individual raster increments (13), determines at least one characteristic variable of the curve (12) of the scanned information.

13. The device as recited in claim 11 or 12,

wherein the device is a component part of at least one control device (1) for controlling/regulating certain motor-vehicle components.

14. The device as recited in claim 11 or 12,

wherein the device is a component part of an operating data or accident data recorder (2) of a motor vehicle.