Efficient and safe industrial Internet of Things data exchange method based on Raspberry Pi

An industrial Internet of Things and data exchange technology, applied in the field of industrial Internet of Things data exchange, can solve the problems of data interception and single product function, and achieve the effects of powerful functions, easy writing, and low cost of network cables

Inactive Publication Date: 2018-08-31
江苏麦酷博信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0007] Purpose of the invention: In order to overcome the above deficiencies, the purpose of the present invention is to provide a method for exchanging industrial data based on Raspberry Pi to solve the problems that data may be intercepted during transmission and the product has a single function

Method used

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  • Efficient and safe industrial Internet of Things data exchange method based on Raspberry Pi

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Embodiment

[0071] Such as figure 1 The shown efficient and safe industrial Internet of Things data exchange method based on raspberry pie includes PLC, raspberry pie, camera, sensor and host computer, and the host computer receives data in real time through Ethernet, which is characterized in that: comprising the following steps:

[0072] (1) Connect the Siemens PLC S-200 to the Raspberry Pi through an RS485 to TTL signal cable;

[0073] (2) Connect the sensor and camera to the Raspberry Pi through the auxiliary cable;

[0074] (3) Different data are received in the Raspberry Pi by writing the program in python language, and the PPI protocol is used to write between the Raspberry Pi and the PLC S-200;

[0075] (4) The Raspberry Pi is connected to the host computer through a network cable;

[0076] (5) The Raspberry Pi uses the python language to encapsulate the received data into a TCP message and encrypt the transmission;

[0077] (6) Call the written dynamic link library, the upper ...

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Abstract

The invention discloses an efficient and safe industrial Internet of Things data exchange method based on Raspberry Pi, belonging to the technical field of information, mainly comprising: connection between the PLC and the Raspberry Pi, connection between the sensor and the Raspberry Pi, connection between the camera and the Raspberry Pi, collection of the acquired data, encryption and transmission of the acquired data, data receiving and data decryption. In the invention, the connection between the PLC and the Raspberry Pi is a connection by RS485 to the TTL chip, the connection between the camera and the sensor may be performed by using an ordinary helper line, and the DES algorithm is used for encryption and decryption in the process of encryption and decryption. By adopting the Raspberry Pi as the information transfer equipment, the invention is capable of storing large-capacity data, and simultaneously accepting the data of the PLC, sensor and video, thereby obtaining powerful functions. The host computer and the Raspberry Pi transmit through the network cable with stable transmission and low transmission cost, and may work in harsh environments. The received data is written in the form of a dynamic link library, which is convenient for the writing of the host computer, so that the software of the host computer has better flexibility.

Description

technical field [0001] The invention belongs to the field of information technology, in particular to an efficient and safe industrial Internet of Things data exchange method based on Raspberry Pi. Background technique [0002] At present, the data acquisition of Siemens PLC is mainly through the special programming line of Siemens or adding a communication module on the PLC, and then the host computer uses the specific software of Siemens to realize. The whole process cannot be applied to long-distance operations. And in the industry, we often encounter some special situations, such as environment, weather and many other uncertain factors, which often cause a lot of extra expenses. In addition, the software can only use Siemens specific software, which is not conducive to the later development of functional modules. Add to. [0003] BC-Net, the product of Wuxi Beichen Company, is a communication module for Ethernet data communication. After PLC data passes through this mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L29/06H04N7/18
CPCH04L63/0435H04L63/0442H04L63/105H04L63/205H04L67/12H04L67/34H04N7/18
Inventor 徐余张方舟
Owner 江苏麦酷博信息科技有限公司
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