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Method and device for updating software of motor vehicle control unit

A technology for controlling equipment and motor vehicles, applied in software deployment, computer security devices, instruments, etc., can solve the problem that the configuration cannot be reliably identified, and achieve the effect of reliable identification and rejection

Pending Publication Date: 2020-07-31
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, incompatible configurations of the overall system resulting from the update cannot be reliably detected by the previously described "simple" self-plausibility check of the updated motor vehicle control unit.

Method used

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  • Method and device for updating software of motor vehicle control unit
  • Method and device for updating software of motor vehicle control unit
  • Method and device for updating software of motor vehicle control unit

Examples

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Embodiment Construction

[0084] Figure 1a Motor vehicle 2 is shown with a plurality of motor vehicle control devices 4 , 6 , 8 , at least one of which has been supplied (“updated”) with new software by means of an external update device 12 a.

[0085] Figure 1b Motor vehicle 2 is shown with a plurality of motor vehicle control devices 4 , 6 , 8 , at least one of which has been supplied (“updated”) with new software by means of internal update device 12 b.

[0086] figure 2 An enlarged schematic view of the external update device 12a is shown. The external update device 12 a can be, for example, a correspondingly equipped motor vehicle diagnostic tester or a user's smartphone / tablet PC / notebook, on which suitable software (“Apps”) is installed.

[0087] image 3 An enlarged schematic view of the internal update device 12b is shown. The internal update device 12 b can be a motor vehicle control device 4 , 6 , 8 which is embedded in the motor vehicle 2 for this purpose or a module in an existing m...

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Abstract

The invention relates to a method for updating the software of at least one motor vehicle control unit (4, 6, 8) built into a motor vehicle (2). The method comprises the following steps of (A) transmitting a preliminary command, particularly a command for blocking the motor vehicle (2), from an updating device (12a, 12b) to the motor vehicle control unit (4, 6, 8); (B) transmitting a confirmationmessage from the motor vehicle control unit (4, 6, 8); (C) transmitting new software from the updating device (12a, 12b) to the motor vehicle control unit (4, 6, 8); (D) soliciting a characteristic value from at least one motor vehicle control unit (4, 6, 8) built into the motor vehicle (2); (E) calculating an activation code on the basis of the solicited characteristic values; (F) using the calculated activation code for the subsequent communication with the motor vehicle control unit (4, 6, 8) that has blocked the vehicle function; and (G) implementing a command for reinstating the drivability of the motor vehicle (2) by the motor vehicle control unit (4, 6, 8) only once the motor vehicle control unit (4, 6, 8) has directly or indirectly checked whether the activation code is correct.

Description

technical field [0001] The invention relates to a method and a device for updating the software (Software) of at least one motor vehicle (Kfz) control device built in a motor vehicle. Background technique [0002] The software update of the motor vehicle control unit is in a voltage field, since on the one hand the motor vehicle control unit must fulfill the safety requirements ("Safety-Goals") up to ASIL-D (ISO 26262) and on the other hand Updates to software for motor vehicle control equipment use diagnostic testers or other external equipment that may contain complex programs and a variety of pre-existing software and thus when ASIL safety objectives are affected It is difficult for diagnostic testers or other external devices to comply with the stated requirements. [0003] Since a faulty update of the software of the motor vehicle control unit can lead to violations of safety objectives up to ASIL D, the use of such components is difficult to tolerate. However, the us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F8/65G06F21/57
CPCG06F8/65G06F21/572G06F2221/2105G06F2221/2107
Inventor D.克里普纳A.海尔M.斯普劳
Owner ROBERT BOSCH GMBH
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