CAN总线双机热备份功能的实现方法

针对钻井过程中，如何确保自动采集录井数据不丢失并及时发送方面的问题，该文在介绍CAN总线特点及工作原理基础上，阐述了利用双采集机与同一CAN总线连接的工作状态下，主、辅采集机之间的通信方法和工作程序。用此方法可以实现CAN总线的双机热备份功能。

Methods for realizing heat back-up function of dual computer with CAN bus

To counter the problem to ensure unmissing mud logging data in automatic acquisi tion and transmitting promptly while drilling, and on the basis of introducing C AN bus features and working principles, the paper set forth communication method s and working procedure between main and auxiliary acquisition computers in the working state of making use of dual acquisition computer and the same CAN bus li nk. With this method, dual computer heat back-up functions of CAN bus could be r ealized.