Wake-up control method and device for body control module
US11474585B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2017 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Jun 11, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/92
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A wake-up control method for a Body Control Module (BCM) includes: step S1 writing IDs and wake-up level information of all Micro Controller Unit (MCU) pins serving as an external wake-up source to a retention RAM; step S2, setting a wake-up detection timer, and triggering a system to enter a low power consumption mode; step S3, after a wake-up detection time set by the wake-up detection timer expires, enabling power supply to all MCU pins, setting the corresponding MCU pin as an input pin according to the pin ID information written in step S1, and acquiring level information of the input pin; and step S4, comparing the level information of the input pin with the wake-up level information written in step S1, if they are consistent, writing the ID of the input pin that is to serve as a wake-up source to the retention RAM and triggering the system to enter a normal operating mode, and if they are inconsistent, disabling the power supply to the MCU pin. A wake-up control device for a BCM is further provided. The wake-up control method and the wake-up control device for a BCM reduce selection requirements for MCU chips, and provide more flexible hardware pin allocation and design for a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.