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LoRa wireless substitution method of RS485 bus

A RS485, wireless technology, applied in the field of LoRa wireless replacement of RS485 bus, can solve the problems of difficult construction, less mounting capacity, communication distance end, etc., and achieve the effect of solving the problem of less mounting capacity

Inactive Publication Date: 2020-04-17
山东有人物联网股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The present invention provides a LoRa wireless alternative method of the RS485 bus, adopting a master-multiple-slave LoRa communication scheme, which can well solve the problems of the above-mentioned RS485 bus such as small loading capacity, communication distance end and construction difficulties.

Method used

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  • LoRa wireless substitution method of RS485 bus
  • LoRa wireless substitution method of RS485 bus

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Embodiment

[0033] In an industrial site, in order to realize intelligent production management, it is necessary to monitor the operation status information of equipment in various parts of the factory in real time and summarize them to the management platform of the monitoring room; 485 devices (65 pieces) collect and summarize information to the data management platform, but due to the complex industrial site environment, difficult wiring and large engineering volume, it is inconvenient to maintain in the later stage; through the method of the present invention, it is only necessary to add a LoRa slave to all devices The node can be sent to the LoRa master node through the LoRa network from the slave node and finally collected to the data management platform of the monitoring room. The on-site installation and construction are simple, and the later maintenance is convenient;

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Abstract

The invention relates to a LoRa wireless substitution method of an RS485 bus, and the method comprises the following steps that an acquisition control platform (3) transmits an acquisition / control command to a LoRa main node (1) through a serial port or a [A1] interface, and the LoRa main node sends out the acquisition / control command in a LoRa mode, wherein at least one LoRa slave node is connected with the industrial 485 equipment through an RS485 interface, and all the LoRa slave nodes receive data of the LoRa master node and then directly transmit the data to the industrial 485 equipment through the RS485 interface; and the industrial 485 equipment also returns the information to the acquisition control platform. The invention has the beneficial effects that the method can be directlyused for replacing a wired RS485 bus scheme in the current industrial field, and the problems of small mounting amount, short communication distance, high field construction difficulty, long construction period and the like in the application process of the current RS485 bus mode can be well solved.

Description

technical field [0001] The invention relates to the technical field of collecting control commands by using the RS485 bus, in particular to a LoRa wireless replacement method for the RS485 bus. Background technique [0002] In the current industrial acquisition and control, such as energy monitoring, intelligent transportation, intelligent buildings, industrial automation and other application fields, the RS485 bus has been widely used due to its low cost and simple design, but the RS485 communication method has the following disadvantages: [0003] The load capacity of the RS485 bus is limited [0004] Usually around 32, as the number of terminals increases, it is usually necessary to increase the matching resistance; [0005] The transmission distance of the RS485 bus is limited [0006] In order to reach the maximum distance of 1200 meters, some special conditions need to be met, such as the baud rate is lower than 110Kbps, the standard shielded twisted pair is used, th...

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Application Information

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IPC IPC(8): H04W4/38H04L12/40
CPCH04L12/40006H04W4/38
Inventor 古欣邵慧温振新蔡芹光许贝贝刘伟
Owner 山东有人物联网股份有限公司
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