Analog Devices / Maxim Integrated MAXREFDES143 Reference Design

Analog Devices MAXREFDES143 Reference Design is an Internet of Things (IoT) embedded security reference design built to protect an industrial sensing node using authentication and notification to a web server. The hardware includes a peripheral module representing a protected sensor node monitoring operating temperature and the remaining life of a filter. The device also includes a mbed® shield representing a controller node responsible for monitoring one or more sensor nodes. The design is hierarchical, with each controller node communicating data from connected sensor nodes to a web server that maintains a centralized log and dispatches notifications as necessary. The mbed shield contains a Wi-Fi module, a DS2465 coprocessor with a 1-Wire® master function, an LCD, LEDs, and pushbuttons. The protected sensor node contains an Analog Devices DS28E15 authenticator, a DS7505 temperature sensor, and a MAX44009 light sensor. The mbed shield communicates to a web server by the onboard Wi-Fi module and the protected sensor node with I²C and 1-Wire.