Vehicle data collection device, vehicle data collection system, and vehicle data collection method

Patent metadata

Field	Value
Publication number	US-2023260336-A1
Application number	US-202318160328-A
Country	US
Kind code	A1
Filing date	Jan 27, 2023
Priority date	Feb 15, 2022
Publication date	Aug 17, 2023
Grant date	—

Abstract

A data collector collects types of vehicle data. An analysis model represents a correspondence between a tendency and a purposes of use of a vehicle. In a correspondence table, selected data, which is a part of the types of vehicle data to be collected for each of the purposes of use, is associated with the purpose of use. A data accumulator accumulates the types of vehicle data collected in a certain period in the past. A purpose discriminator discriminates the purpose of use using the analysis model and the types of vehicle data accumulated in the data accumulator. A storage controller causes a transmission data storage to store the selected data to be transmitted to a center device identified using the correspondence table and based on the discriminated purpose of use. A transmission controller transmits the stored selected data to the center device at a set transmission frequency.

First claim

What is claimed is:

1 . A vehicle data collection device comprising:
a data collector configured to collect a plurality of types of vehicle data representing at least one of a state of a vehicle or a behavior of the vehicle; a model storage configured to store an analysis model representing a correspondence between a tendency, which is shown by a time series of the plurality of types of vehicle data, and a plurality of purposes of use each representing a purpose for which a driver of the vehicle uses the vehicle; a table storage configured to store a correspondence table in which selected data, which is a part of the plurality of types of vehicle data to be collected for each of the purposes of use, is associated with the purpose of use; a transmission data storage configured to store the selected data to be transmitted to a center device that is configured to accumulate data; a data accumulator configured to accumulate the plurality of types of vehicle data collected by the data collector in a certain period of time in the past; a purpose discriminator configured to discriminate the purpose of use of the vehicle using the analysis model that is stored in the model storage and a discrimination data group that is the plurality of types of vehicle data accumulated in the data accumulator; a storage controller configured to store, in the transmission data storage, the selected data identified using the correspondence table and based on the purpose of use discriminated by the purpose discriminator; and a transmission controller configured to transmit the selected data, which is stored in the transmission data storage, to the center device at a set transmission frequency.

2 . The vehicle data collection device according to claim 1 , wherein
in the correspondence table, each of the selected data is associated with a collection frequency, the transmission controller is configured to perform at least one of storing of the selected data in the transmission data storage or transmission of the selected data stored in the transmission data storage, according to the collection frequency, which is identified using the correspondence table and based on the purpose of use discriminated by the purpose discriminator.

3 . The vehicle data collection device according to claim 1 , further composing:
a passive transmission controller configured to transmit the selected data stored in the transmission data storage, in response to a request from the center device.

4 . The vehicle data collection device according to claim 1 , further composing:
a driver recognizer configured to recognize a driver of the vehicle, wherein the analysis model is prepared for each driver to be recognized by the driver recognizer, and the purpose discriminator is configured to switch the analysis model to be used according to a recognition result of the driver recognizer.

5 . The vehicle data collection device according to claim 1 , wherein
the analysis model is generated by clustering the plurality of types of vehicle data acquired in the past, a cluster associated with the purpose of use included in the analysis model is a model cluster, a cluster formed by the discrimination data group is a data cluster, and the purpose discriminator is configured to determine that discrimination of the purpose of use is in success when the data cluster is associated with any of model clusters including the model cluster.

6 . The vehicle data collection device according to claim 5 , wherein
the purpose discriminator is configured to determine that discrimination is in success when a position of the data cluster is within a predetermined range with respect to the model cluster, the purpose discriminator is further configured to, on determination that the discrimination is in success, determine that a state of use of the discriminated purpose of use is steady, when the position of the data cluster is inside the model cluster, and determine that the state of use is unsteady, when the position of the data cluster is outside the model cluster, and the transmission controller is configured to change at least one of the selected data or a collection frequency according to whether the state of use is the steady or the unsteady.

7 . The vehicle data collection device according to claim 5 , wherein
a model updater configured to finely adjust a range of the model cluster, which corresponds to the discriminated purpose of use, using the discrimination data group, when the purpose discriminator determines that the discrimination is in success.

8 . The vehicle data collection device according to claim 7 , wherein
the purpose discriminator is configured to, when the discrimination data group does not form the data cluster, determine that the discrimination of the purpose of use is in failure and set a mode of failure to delete, and the model updater is configured to, when the mode of failure in the discrimination of the purpose of use is the delete, delete, as a noise, the discrimination data group, of which the discrimination is in failure.

9 . The vehicle data collection device according to claim 7 , wherein
the purpose discriminator is configured to, when the data cluster is not associated with any of the model clusters, determine that the discrimination of the purpose of use is in failure, and set the mode of failure to relearn, and the model updater is configured to, when the mode of failure in the discrimination of the purpose of use is the relearn, store, as relearning data used for relearning of the analysis model in a learning data storage, the discrimination data group, of which the discrimination is in failure, together with the discrimination data group, of which the discrimination is in success.

10 . The vehicle data collection device according to claim 9 , further composing:
a model relearner configured to relearn the analysis model based on the relearning data stored in the learning data storage.

11 . The vehicle data collection device according to claim 10 , wherein
the model relearner is configured to transmit the relearning data to the center device, receive the analysis model, which is relearned using the relearning data, from the center device, and update a content, which is stored in the model storage, with the received analysis model.

12 . A vehicle data collection system comprising:
a vehicle data collection device mounted on a vehicle; and a center device configured to communicate with the vehicle data collection device, wherein the vehicle data collection device includes: a data collector configured to collect a plurality of types of vehicle data representing at least one of a state of a vehicle or a behavior of the vehicle; a model storage configured to store an analysis model representing a correspondence between a tendency, which is shown by a time series of the plurality of types of vehicle data, and a plurality of purposes of use each representing a purpose for which a driver of the vehicle uses the vehicle; a table storage configured to store a correspondence table in which selected data, which is a part of the plurality of types of vehicle data to be collected for each of the purposes of use, is associated with the purpose of use; a transmission data storage configured to store the selected data to be transmitted to the center device; a data accumulator configured to accumulate the plurality of types of vehicle data collected by the data collector in a certain period of time in the past; a purpose discriminator configured to discriminate the purpose of use of the vehicle using the analysis model that is stored in the model storage and a discri

Assignees

• Denso Corp

Inventors

• Nishie Keisuke

Classifications

• G07C5/0841 Primary

  Registering performance data (recording measured values G01D; information storage G11B) · CPC title

• G07C5/008 Primary

  communicating information to a remotely located station (transmission systems for measured values G08C) · CPC title

• G07C5/085

  using electronic data carriers · CPC title