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Method and apparatus for simple time synchronization of communications in industrial environment

A time synchronization, industrial environment technology, applied in wireless communication, synchronization devices, electrical components, etc., can solve problems such as cost-effective security vulnerabilities

Pending Publication Date: 2022-05-06
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0017] However, the protocol is expensive to implement and has security holes

Method used

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  • Method and apparatus for simple time synchronization of communications in industrial environment

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Embodiment Construction

[0038] The figure shows a system according to the invention with a transmitter 1 and a receiver 2 . Components 1 and 2 are each connected via a data bus 10 , 20 to other network components not shown in the drawing.

[0039] The actual data DATA is transmitted via the first wireless connection. To this end, the elements 1 , 2 each have a corresponding transmitting and receiving device 13 , 23 with a matching antenna 131 , 231 . The antennas come from or go to a suitable communication interface 11 , 21 . Real time clocks 12, 22 are important for time synchronization, real time clocks are necessary both when generating synchronized clock signals and when processing them after reception.

[0040] According to the invention, the units 1, 2 also have a second wireless transmission option 14, 24 for the time-synchronized signal which is separate from the first data transmission option and, as shown above, can be technically very simple ground design. In particular, it is sufficie...

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PUM

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Abstract

An iWLAN protocol also exists for wireless communication in an industrial environment, the iWLAN protocol meets requirements, but time synchronization is not provided during data transmission. According to the invention, additional (ideally wireless) channels are used for synchronization. For this purpose, a simple radio system is used in an advantageous design of the invention. The pulses or telegrams for time synchronization are directly activated by a unit implemented as hardware, responsible for time synchronization and having a high-precision clock, or delivered to the side of the unit to be synchronized. The radio system can be implemented very simply and unidirectionally. The transmission process begins without a delay to avoid alterable delays.

Description

Background technique [0001] The ongoing digitization in industry cannot be imagined without modern communication technologies. Just consider wireless solutions in applications where cabling is too complex or even not feasible. [0002] In order to provide companies with the best possible infrastructure for exchanging all types of data, special Industrial Wireless Local Area Network (IWLAN) products with special additional functions have been developed to meet the specific requirements of WLANs in industry. [0003] In particular applications in automation, ie, for example in automobile construction, in transport and logistics, but also in the oil and gas industry, benefit from this. [0004] The main difference from WLAN, which is widely used in the private sector, is the time-precise transmission of control and data sets, which is absolutely necessary for use in industry in order to be able to control machines safely. Furthermore, this device is designed for a wide temperat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00
CPCH04W56/0015
Inventor 乌尔里希·辛恩
Owner SIEMENS AG