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A serial port and Ethernet conversion device based on the mqtt Internet of Things protocol

A conversion device, Ethernet technology, applied in the direction of logic circuit connection/interface layout, bus network, data exchange through path configuration, etc., can solve the problem of inability to achieve high-speed data transmission point-to-point reliable communication, only support server mode, unable to log in remotely Server data transfer and other issues

Active Publication Date: 2018-04-13
安徽修武工业技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent CN102387054A proposes a serial-to-Ethernet control device based on STM32. The device uses a software Ethernet protocol stack. Although this software protocol stack can reduce the cost of the device, it greatly reduces the stability of communication, and uses STM32 The serial-to-Ethernet device only supports server mode, not client mode, and the device cannot log in to the remote server for data transmission
This set of devices cannot support the UDP protocol and integrate the MQTT Internet of Things protocol, and cannot realize non-connection-oriented high-speed data transmission and large-scale long-distance point-to-point reliable communication. Ethernet conversion device

Method used

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  • A serial port and Ethernet conversion device based on the mqtt Internet of Things protocol
  • A serial port and Ethernet conversion device based on the mqtt Internet of Things protocol
  • A serial port and Ethernet conversion device based on the mqtt Internet of Things protocol

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Embodiment Construction

[0024] like figure 1 and 3 As shown, the serial port and Ethernet conversion device based on the MQTT Internet of Things protocol includes a voltage conversion circuit 1, a single-chip microcomputer control circuit 2, a SWD debugging interface circuit 3, a W5500 hardware protocol stack circuit 4, a network transformer and an RJ45 interface circuit 5, and RS232 serial port communication Circuit 6.

[0025] like figure 2 As shown, the voltage conversion circuit includes a two-pin in-line terminal J1, a PPTC resettable fuse F1, a current-limiting resistor R1, a light-emitting diode D2, an anti-reverse connection diode D1, a voltage-stabilizing diode D3, and a power stabilizer Press chip IC1, two electrolytic capacitors, and two ceramic capacitors. Pin 1 of double-pin direct plug-in terminal J1 is connected to pin 1 of PPTC resettable fuse F1; pin 1 of current-limiting resistor R1 is connected to pin 2 of PPTC resettable fuse F1, positive pole of anti-reverse diode D1, and LED...

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Abstract

The invention relates to a serial port and Ethernet conversion device based on the MQTT Internet of Things protocol. The invention includes a voltage conversion circuit, a single-chip microcomputer control circuit, a SWD debugging interface circuit, a W5500 hardware protocol stack circuit, a network transformer and an RJ45 interface circuit and an RS232 serial port communication circuit. The invention is transplanted with the MQTT Internet of Things protocol, which can be connected to the MQTT server on the Ethernet for long-distance point-to-point reliable communication; the invention also supports transparent data transmission in TCP_Server, TCP_Client, UDP and UDP_Server modes; the invention has small size, low cost Advantages of low and low power consumption.

Description

technical field [0001] The invention belongs to the field of communication technology, and relates to a serial port and Ethernet conversion device based on the MQTT Internet of Things protocol, which is mainly used for connecting RS232 interfaces of embedded processors, sensors, programmable logic controllers, and data storage devices in Internet of Things terminals. The device is connected to the Internet. Background technique [0002] As an emerging communication technology in the 21st century, Internet of Things technology has developed rapidly around the world in recent years. IT industry giants such as IBM and Microsoft have also launched their own Internet of Things technology achievements. With the advent of the Internet of Things era, our country and government have fully realized the importance of the Internet of Things technology revolution. China's Internet industry has developed rapidly in recent years, and it has already established the necessary foundation fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/40H03K19/0175
Inventor 贺建立宋红军余果
Owner 安徽修武工业技术有限公司
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