DRIVE DATA COLLECTION SYSTEM

• US 20160140779A1
• Filed: 11/13/2015
• Published: 05/19/2016
• Est. Priority Date: 11/14/2014
• Status: Active Grant

• Current Assignee: DENSO Corporation
• Original Assignee: DENSO Corporation
• Inventors: TAKENAKA, Kazuhito, BANDO, Takashi, EGAWA, Masumi
• Granted Patent: US 9,940,759 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G07C 5/008 communicating information to a remotely located station transmission systems for measured values G08C
• CPC Class Codes: G07C 5/0816 Indicating performance data, e.g. occurrence of a malfunction

Abstract

A drive data collection system includes an in-vehicle system and an information center. The in-vehicle system includes a data collector that repeatedly collects measurement values indicative of various indexes regarding a state of a subject vehicle, a model memory that memorizes model information regarding discretization rules that are shared by each of participating vehicles in the system, and a data discretizer that discretizes drive data, which includes time-series measurement values collected by the data collector, into multiple data parts according to the model information. The information center includes a data accumulator that accumulates the discretized drive data in a server. The in-vehicle system sends the discretized drive data to the information center through a communicator. Therefore, the drive data collection system efficiently collects the drive data in a versatilely-utilizable manner for the analysis of general driving practices/behaviors.

Claims

1. A drive data collection system, the drive data collection system comprising:

an in-vehicle system installed in a vehicle, the in-vehicle system including

a data collector repeatedly collecting measurement values indicative of various indexes regarding a state of a subject vehicle that has the in-vehicle system installed in the subject vehicle,

a model memory memorizing model information regarding discretization rules for discretizing drive data into multiple data parts, the drive data includes time-series measurement values collected by the data collector, and the multiple data parts are shared by each of participating vehicles in the system, and

a data discretizer discretizing the drive data into the multiple data parts according to the model information; and

an information center communicating with the in-vehicle system, the information center including

a data accumulator accumulating the discretized drive data in a server, wherein

the in-vehicle system sends the discretized drive data to the information center via communication through a communicator.

2. The drive data collection system of claim 1, wherein

the information center includes a model creator creating the model information based on the discretized data accumulated in the server,

the in-vehicle system includes a model updater updating memorized contents of the model memory by using the model information created by the model creator, and

the information center distributes the model information to the in-vehicle system via communication through an other communicator.

7. The drive data collection system of claim 1, wherein

the in-vehicle system further includes:

an additional information collector collecting additional information regarding a situation in which the subject vehicle has the in-vehicle system installed in the subject vehicle; and

a data adder adding the additional information collected by the additional information collector to data that is to be sent to the information center.

3. A drive data collection system, the drive data collection system comprising:

an in-vehicle system installed in a vehicle, the in-vehicle system including

a data collector repeatedly collecting measurement values of various indexes regarding a state of a subject vehicle that has the in-vehicle system installed in the subject vehicle,

a low-level model memory memorizing low-level model information regarding discretization rules for discretizing drive data into multiple data parts, the drive data collected by the data collector as time-series measurement values, and

a low-level discretizer discretizing the drive data into the multiple data parts by using the low-level model information; and

an information center communicating with the in-vehicle system, the information center including;

a high-level model memory memorizing high-level model information regarding integration rules for integrating the discretized drive data discretized by the low-level discretizer,

a high-level discretizer integrating the discretized drive data according to the high-level model information, and

a data accumulator accumulating the integrated discretized drive data in a server.

4. The drive data collection system of claim 3, wherein

the information center includes:

a model creator creating the high-level model information based on the integrated discretized drive data accumulated in the server; and

a model updater updating memorized contents of the high-level model memory with the high-level model information created by the model creator.

5. A drive data collection system, the drive data collection system comprising:

an in-vehicle system installed in a vehicle, the in-vehicle system including

a data collector repeatedly collecting measurement values of various indexes regarding a state of a subject vehicle that has the in-vehicle system installed in the subject vehicle,

a low-level model memory memorizing low-level model information regarding discretization rules for discretizing drive data into multiple data parts, the drive data including time-series measurement values collected by the data collector, and

a low-level discretizer discretizing the drive data according to the low-level model information;

a distributed processing device, each of the distributed processing device including

a high-level model memory memorizing high-level model information regarding integration rules for integrating the discretized drive data discretized by the low-level discretizer,

a high-level discretizer integrating the discretized drive data according to the high-level model information memorized in the high-level model memory, and

a model updater updating memorized contents of the high-level model memory with the high-level model information created by the model creator; and

an information center communicating with the in-vehicle system, the information center including

a data accumulator accumulating the integrated discretized drive data in a server, and

a model creator creating the high level model information based on the integrated discretized drive data accumulated in the server, wherein

the distributed processing device communicates with both of the in-vehicle system and the information center.

6. The drive data collection system of claim 5, wherein

the distributed processing device is installed in a part of participating vehicles in the system.