Approved equipment
Novus Airgate 4G WiFi
AirGate 4G Wi-Fi offers a unique and flexible platform that allows remote access to industrial automation networks. This device allows wireless data connectivity through public and private cellular networks with 2G / 3G / 4G technology, access to legacy networks with Modbus RTU over RS485, and numerous other TCP/IP and RS232 protocols. The AirGate 4G Wi-Fi has 2 SIM inputs, allowing the use of up to 2 cellular network operators (1 of them failover), 2 LAN ports (1 port that can be used as a LAN or as a fixed Internet WAN with cellular failover) and 2 inputs and 2 digital outputs for alarm applications. It also has a Wi-Fi interface 802.11 b/g/n for access point with devices that have Wi-Fi connectivity. The device supports 9 to 48 VDC supply voltage and it has a protection mechanism against polarity inversion for greater reliability. An advanced choice for wireless M2M applications with reliable data transmission features.
IoT Monitoring Center - AL2
The IoT Monitoring Center is a product developed by AL2, where it is possible to perform monitoring and control in several IoT applications. The central AL2 has communication from WIFI, GSM (contains input for SIM CARD), LORA and BLUETOOTH. There are equipment available by the manufacturer that connects from 1 to 10 sensors, depending on the model line chosen. Considering the model in the figure below, the plant has 5 digital inputs (D1 to D5), 2 analog inputs (A1 and A2) that are able to receive a current signal of 4 to 20 mA, and 2 relay outputs (C1 and C2) of 10 A.
With the possibility of connecting the internet, the central AL2 is suitable for the use of various communication protocols, for example, the MQTT which is defined as a machine-to-machine (M2M) communication protocol.
ESP32
The ESP 32 is a low-cost microcontroller that has good computational resources such as processing and memory. This device is the evolution of the ESP8266, since it has more computational resources than its predecessor. Its dual-core cpu operates from 160mhz to 240mhz, while the esp8266 is a single-core processor that runs on 80mhz. This small computer has a Wi-Fi module, includes a Bluetooth 4.0 module and several input and output pins, and is very useful for projects in the context of the Internet of Things (loT).It is very common to find this microcontroller mounted on prototyping boards with all necessary peripherals already embedded as source, card reader, USB driver as shown in Figure 1. With the possibility of connecting to the internet, the ESP32 is suitable for the use of various communication protocols, for example the MQTT which is defined as a communication protocol between machines, i.e. M2M. The same is one of the most used for data transmission and message exchanges on IoT platforms, especially the thingable platform!
To communicate with the MQTT protocol, simply use your device and a USB cable that will be used to connect to the desktop. Below are platforms used to carry out the ESP32 program:
• Spruino (JavaScript SDK language) and the Node.js emulated firmware
• ESPlorer IDE (Lua language)
• Arduino IDE (C / C++ language)
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