摘要
为了实现地铁屏蔽门中门控单元在线固件的更新,基于芯片本身的引导程序,采用将带FLASH库的预置程序通过CAN总线下载到芯片的随机存储器上,再利用预置程序将自行设计的引导程序固化到片内FLASH中,以实现在车站现场,远距离操作报警盘,并迅速对所有门控单元进行在线固件更新的目的。这样不但避免了为更新门控固件而拆装门控单元的麻烦,维护了程序的版权,也为地铁屏蔽门门控单元在线固件的更新提供了一种新方法。
In order to realize the online firmware update of DCU（door control unit） in metro PSD（platform screen door）,based on the boot program in chip,a method of downloading an initializing program with Flash Database through CAN（controller area network） bus to the random memory in chip is adopted,and the initializing program is used to solidify the self-designed boot program in the flash on chip by means of an initializing program to achieve the purpose that the PSA（panel of supervision and alarm） can update all DCU online.It can avoid the trouble of dismounting DCU because of the firmware update to safeguard the program copyright,but also providing a new method for online firmware update of DCU in metro PSD.
出处
《现代电子技术》
2011年第20期46-49,共4页
Modern Electronics Technique
