I have implemented the device in a rebar wood processing factory. To be more specific, we have installed the device to control the wood dryer chamber. The environmental data to be considered is temperature and humidity in the chamber. Here is the video documentation of the project:
Node-RED is a really awesome platform to implement IoT and IIoT(Industrial Internet of Things).
For more details of the project with code, please visit here.
I have replaced the PLC programming unit and the HMI device with Raspberry Pi and Raspberry Pi 7-inch touch screen. The Raspberry Pi getting the Temperature and humidity sensors data from an Arduino Uno through an Arduino Ethernet module. The data is transferred using MQTT protocol to Node-RED hosted on Raspberry Pi.
The Raspberry Pi analyzes the sensor data and triggers the GPIO pins and sends the command to the Relay Module. According to the pre-defined logic, the relay off/on the connected industrial actuators.
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