Electronic control device for vehicles

• US 10,421,419 B2
• Filed: 07/05/2016
• Issued: 09/24/2019
• Est. Priority Date: 08/24/2015
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: DENSO Corporation
• Inventors: Shibata, Hiroaki
• Primary Examiner(s): Mawari, Redhwan K
• Application Number:
  US15/743,971
• Publication Number:
  US 20180208136A1
• Time in Patent Office: 1,176 Days
• CPC Class Codes: B60R 16/0232 for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
• CPC Class Codes: B60R 2021/0027 Post collision measures, e.g. notifying emergency services
• CPC Class Codes: G01M 17/007 Wheeled or endless-tracked vehicles G01M17/08 takes precedence
• CPC Class Codes: G06F 16/903 Querying for retrieval from the web G06F16/953
• CPC Class Codes: G06Q 40/08 Insurance
• CPC Class Codes: G07C 5/008 communicating information to a remotely located station transmission systems for measured values G08C
• CPC Class Codes: G07C 5/0841 Registering performance data recording measured values G01D; information storage G11B

Abstract

A vehicle electronic control device includes: a detection unit of a power supply voltage; a power determination unit determining whether the power supply voltage is reduced below a predetermined voltage; an identification number storage unit for a vehicle identification number; a timing storage unit storing time information of reduction when the power supply voltage is reduced below the predetermined voltage; a control unit acquiring a vehicle identification number stored in an identification number storage unit and time information stored in a timing storage unit of the other electronic control device; and an identification number determination unit: determining one of the other electronic control device and the electronic control device storing newest time information in the timing storage unit as a target electronic control device; and determining that a vehicle identification number stored in the identification number storage unit of the target electronic control device is a correct identification number.

Claims

1. A vehicle electronic control device that is connected to an other electronic control device to constitute a system, the vehicle electronic control device comprising:

a detection unit that detects a power supply voltage supplied to a body of the electronic control device;

a power determination unit that determines whether the power supply voltage detected by the detection unit is reduced below a predetermined voltage;

an identification number storage unit that stores a vehicle identification number;

a timing storage unit that stores time information of reduction in a nonvolatile manner when the power determination unit determines that the power supply voltage is reduced below the predetermined voltage;

a control unit that acquires a vehicle identification number stored in an identification number storage unit of the other electronic control device and time information stored in a timing storage unit of the other electronic control device through a vehicle network; and

an identification number determination unit that;

determines one of the other electronic control device and the electronic control device as a target electronic control device when the timing storage unit of each of the other electronic control device and the electronic control device stores the time information, the one of the other electronic control device and the electronic control device storing newest time information in the timing storage unit; and

determines that a vehicle identification number stored in the identification number storage unit of the target electronic control device is a correct identification number.

3. The vehicle electronic control device according to claim 1, further comprising:

a rewriting unit that writes the vehicle identification number, determined by the identification number determination unit as the correct identification number, into the identification number storage unit of an other of the other electronic control device and the electronic control device different from the target electronic control device.

2. A vehicle electronic control device that is connected to an other electronic control device to constitute a system, the vehicle electronic control device comprising:

a detection unit that detects a power supply voltage supplied to a body of the electronic control device;

a power determination unit that determines whether the power supply voltage detected by the detection unit is reduced below a predetermined voltage;

an identification number storage unit that stores a vehicle identification number;

a determination result storage unit that stores a determination result of the power determination unit;

a control unit that acquires a vehicle identification number stored in an identification number storage unit of the other electronic control device through a vehicle network; and

an identification number determination unit that;

determines one of the other electronic control device and the electronic control device a target electronic control device, the one of the other electronic control device and the electronic control device storing information, in the determination result storage unit, indicating that the power supply voltage is not reduced below the predetermined voltage; and

determines that a vehicle identification number stored in the identification number storage unit of the target electronic control device is a correct identification number.

4. The vehicle electronic control device according to claim 2, further comprising:

a rewriting unit that writes the vehicle identification number, determined by the identification number determination unit as the correct identification number, into the identification number storage unit of an other of the other electronic control device and the electronic control device different from the target electronic control device.