METHOD FOR DATA REDUCTION OF ITEMS OF SENSOR DATA INFORMATION

• US 20160210081A1
• Filed: 01/15/2016
• Published: 07/21/2016
• Est. Priority Date: 01/20/2015
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Block, Thomas, Geisler, Dominik
• Granted Patent: US 10,156,992 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 12/023 Free address space management
• CPC Class Codes: G06F 3/0608 Saving storage space on storage systems
• CPC Class Codes: G06F 3/0641 De-duplication techniques
• CPC Class Codes: G06F 3/0652 Erasing, e.g. deleting, data cleaning, moving of data to a wastebasket
• CPC Class Codes: G06F 3/0659 Command handling arrangements, e.g. command buffers, queues, command scheduling
• CPC Class Codes: G06F 3/0671 In-line storage system
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

A method for data reduction of items of sensor data information, a plurality of data frames being stored in a buffer memory, a data frame including a sensor data representative and an item of discard information of a discard counter, a plurality of items of sensor data information being assigned to a data frame in a comparison operation.

Claims

1. A method for data reduction of items of sensor data information comprising:

storing a plurality of data frames in a buffer memory, each data frame including a sensor data representative and an item of discard information of a discard counter; and

assigning, in a comparison operation, a plurality of items of sensor data information to each data frame.

2. The method as recited in claim 1, wherein the comparison operation and the assigning of the items of sensor data information to the sensor data representatives includes:

in a first method step, in a situation that a first item of sensor data information is processed, storing an item of storage information in a buffer store, wherein the discard counter is in an initial state;

in a second method step, comparing the storage information to a second item of sensor data information to obtain a comparison result; and

in a third method step, as a function of the comparison result, discarding the second item of sensor data information while incrementing the discard counter.

3. The method as recited in claim 1, wherein the comparison operation and the assigning of the items of sensor data information to the sensor data representative includes:

in a first method step, in a situation that a first item of sensor data information is processed, storing an item of storage information in a buffer store, wherein the discard counter is in an initial state;

in a second method step, comparing the storage information to a second item of sensor data information to obtain a comparison result; and

in a third method step, as a function of the comparison result, storing a first sensor data representative of at least one item of sensor data information with an item of discard information of a discard counter in a data frame in the buffer memory and setting the discard counter to the initial state.

4. The method as recited in claim 1, wherein the storage information is one of:

i) static, or ii) is newly calculated variably upon change of the discard counter information.

5. The method as recited in claim 4, wherein, for the case that the storage information is static, after the third method step, the second and third method steps are repeated using a further item of sensor data information, for the case that the storage information is variable, after the third method step, either the second and third method steps are repeated using a further item of sensor data information, or the first, the second, and the third method steps are repeated using at least one further item of sensor data information.

6. The method as recited in claim 1, wherein the sensor data representative one of:

i) corresponds to the assigned items of sensor data information, or ii) is newly determined from one of the assigned items of sensor data information.

7. The method as recited in claim 1, wherein a maximum run length, which corresponds to the maximum number of items of sensor data information which are assigned to a sensor data representative, is specified, storage being performed independently of the comparison result upon reaching the maximum run length.

8. The method as recited in claim 1, wherein, during the comparison operation, determining with the aid of a threshold whether the sensor data information is discarded, and at least one of:

i) the threshold being adapted as a function of how strongly the buffer memory is filled, and ii) the run length being adapted automatically as a function of how strongly the buffer memory is filled.

9. A sensor data analysis device comprising a buffer memory and a comparison unit, the comparison unit including a buffer store and a computing unit, the sensor data analysis device being configured to receive a plurality of items of sensor data information from a sensor, the sensor data analysis device being configured to assign multiple items of sensor data information to a data frame in the comparison unit.

10. The sensor data analysis device as recited in claim 9, wherein the sensor data analysis device is designed to transfer a plurality of output data to a microcontroller, the output data including a plurality of data frames or a plurality of decompressed data frames.

11. The sensor data analysis device as recited in claim 9, wherein the sensor data analysis device is configured in such a way that the number of the sensor data representatives which are stored in a fixed period in the buffer memory is variable.