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Cloud Gateway Module

Overview

Description

As the IoT ecosystem expands, the demand for modules that bridge local devices and cloud services continues to grow. A cloud gateway module acts as an intermediary, connecting local devices such as sensors, IoT hardware, and other networked systems to cloud services. This facilitates seamless data transmission, remote monitoring, control, and secure data storage.

This design demonstrates an implementation of a cloud-connected gateway module powered by an MCU with an Arm® Cortex®-M4 core. The system communicates with external modules via robust interfaces like RS-485 and RS-232, while collected data is uploaded to the cloud through a 4G module for further analysis. The power supply is designed to support both 12V and 24V inputs, ensuring compatibility with a wide range of systems.

System Benefits:

  • Arm Cortex-M4 core running at 120MHz ensures quick response times and smooth operation, with 512kB flash memory and 256kB SRAM for ample resources.
  • Low input voltage and high PSRR LDO delivers clean and stable power with minimal noise interference.
  • Synchronous buck regulator delivers up to 2.5A continuous output current for demanding applications.
  • RS-485/RS-232 interfaces ensure reliable, flexible, and long-distance communication.

Comparison

Applications

Block Diagram

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4:3 ratio Sheet.1 Sheet.2 Sheet.3 Sheet.4 CN232 CN232 CN232 4G Module 4G Module 4G Module Level Translator Level Translator Level Translator LED LED LED Cloud Input Connector Arrow Connector Arrow.72 Connector double arrow Connector Arrow.74 Connector Line Connector double arrow.77 Connector Arrow.78 Connector double arrow.79 Connector Arrow.80 Connector 1.161 Connector 1.161.82 Connector Arrow.83 Cloud Cloud Cloud 12~24V 12~24V 12~24V 3.8V 3.8V 3.8V 3.3V 3.3V 3.3V Transmitter/Receiver Transmitter/Receiver Transmitter/Receiver Connector Arrow.97 RS-485/RS-232 RS-485/RS-232 RS-485/RS-232 Connector double arrow.100 Sheet.101 Diode - IR Infrared Sheet.103 Sheet.104 Sheet.105 Sheet.106 Sheet.107 Darlington.651 Sheet.109 Darlington.254 MCU MCU MCU MCU UART UART UART GPIO GPIO GPIO UART UART UART Buck Regulator Buck Regulator Buck Regulator LDO LDO LDO
Exiting Interactive Block Diagram