The invention discloses a method and device for remotely upgrading firmware through an electronic control unit, and the method comprises the steps: an upgrading main control unit informs a whole vehicle to be in an FOTA mode after checking that the vehicle meets an upgrading condition; when the target electric control unit is a first-class electric control unit, the upgrading main control unit sends a signal for closing a relay for controlling the power supply mode of the whole vehicle to the electric control unit for controlling the power supply mode of the whole vehicle; when the target electric control unit is a second-class electric control unit, the upgrading main control unit sends a signal without a relay request to the electric control unit for controlling the power supply mode of the whole vehicle, that is, a relay for controlling the power supply mode of the whole vehicle does not need to be closed; the upgrading main control unit starts an FOTA engine to analyze the downloaded upgrading file package, and firmware is upgraded for the target electronic control unit. By changing the on/off state of the relay for controlling the power supply mode of the whole vehicle, the firmware of the first-class electronic control unit and the firmware of the second-class electronic control unit are remotely upgraded when the power supply mode of the whole vehicle is OFF.
本申请公开了一种电控单元远程升级固件的方法及装置,该方法包括:升级主控单元检查车辆满足升级条件之后,通知整车处于FOTA模式;当目标电控单元为一类电控单元时,升级主控单元向控制整车电源模式的电控单元发送闭合控制整车供电方式的继电器的信号;当目标电控单元为二类电控单元时,升级主控单元向控制整车电源模式的电控单元发送无继电器请求的信号,即无需闭合控制整车供电方式的继电器;升级主控单元启动FOTA引擎解析下载的升级文件包,给目标电控单元升级固件。通过改变控制整车供电方式的继电器的开/闭状态,实现当整车电源模式为OFF时对一类电控单元和二类电控单元的固件远程升级。
Method and device for remotely upgrading firmware of electronic control unit
一种电控单元远程升级固件的方法及装置
2022-12-16
Patent
Electronic Resource
Chinese
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