TI’s lockstep implementation is a 1oo1D design which is inherently less sensitive to common cause failure than 1oo2 or 2oo2 lockstep architectures. In addition TI has applied measures including temporal diversity and physical/layout diversity to further mitigate common cause failure concerns. TI has been producing products with similar lockstep architectures for many years and has yet to see a confirmed common cause CPU failure. Details of the design for mitigation of common cause failure in the lockstep diagnostic are publicly available Section 188.8.131.52 in the RM46 safety manual, which can be downloaded from http://www.ti.com/hercules (lit#SPNU551)
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Are the design challenges the same as with embedded systems, but with a little developer- and IT-skills added in? What do engineers need to know? Rick Merritt talks with two experts about the tools and best options for designing IoT devices in 2016. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.