Method for wirelessly integrating a radio subscriber into an automation system

Patent metadata

Field	Value
Publication number	US-12047895-B2
Application number	US-202117566857-A
Country	US
Kind code	B2
Filing date	Dec 31, 2021
Priority date	Aug 30, 2019
Publication date	Jul 23, 2024
Grant date	Jul 23, 2024

Abstract

An automation system has a master control unit, a first radio subscriber, a first radio device and a clock master. The first radio device has a first synchronization element, a first radio module and a first connection for the bus system. The first radio module can establish a radio connection to the first radio subscriber for data exchange with a bus system provided by the master control unit. The first radio connection has a first radio channel with a first frequency range. The first synchronization element is set up to output a synchronization signal to the first radio module, based on a signal received from the clock master via the first connection. The first radio module is set up to change a frequency of the first radio channel based on the synchronization signal, within the first frequency range, on the basis of a first hopping table.

First claim

The invention claimed is:

1. An automation system comprising:
a master control unit,
a first radio subscriber, a second radio subscriber and a third radio subscriber,
a first radio device, a second radio device and a third radio device, and
a clock master configured to output signals;
wherein a bus system is provided by the master control unit,
wherein communication within the automation system takes place via the bus system,
wherein the first radio device comprises a first synchronization element, a first radio module and a first connection for the bus system, and
wherein the first radio module is configured to establish a first radio connection to the first radio subscriber for data exchange between the first radio subscriber and the bus system,
the first radio connection having a first radio channel, the first radio channel comprising a first frequency range,
the first radio module comprising a first synchronization input, the first synchronization element being configured to output a first synchronization signal to the first synchronization input of the first radio module based on a signal received for the bus system from the clock master via the first connection,
the first radio module being configured to change a frequency within the first frequency range of the first radio channel based on the first synchronization signal, the changing of the frequency within the first frequency range being carried out based on a first hopping table;
wherein the second radio device comprises a second synchronization element, a second radio module and a second connection for the bus system,
wherein the second radio module is configured to establish a second radio connection to the second radio subscriber for data exchanged between the second radio subscriber and the bus system, and
wherein the second radio connection has a second radio channel, wherein the second radio channel comprises a second frequency range,
the second radio module having a second synchronization input, the second synchronization element being configured to output a second synchronization signal to the second synchronization input of the second radio module based on a signal received for the bus system from the clock master via the second connection, and the second radio module being configured to change a frequency within the second frequency range of the second radio channel based on the second synchronization signal, the changing of the frequency within the second frequency range being carried out based on a second hopping table;
wherein the third radio device comprises a third synchronization element, a third radio module and a third connection for the bus system,
wherein the third radio module is configured to establish a third radio connection to the third radio subscriber for data exchange between the third radio subscriber and the bus system, and
wherein the third radio connection comprises a third radio channel, wherein the third radio channel comprises a third frequency range,
the third radio module having a third synchronization input, the third synchronization element being configured to output a third synchronization signal to the third synchronization input of the third radio module based on a signal received for the bus system from the clock master via the third connection, and
the third radio module being configured to change a frequency within the third frequency range of the third radio channel based on the third synchronization signal, the changing of the frequency within the third frequency range being carried out based on a third hopping table;
wherein the second radio device is arranged within a first radio range of the first radio device and a third radio range of the third radio device, and wherein the first radio device is arranged outside the third radio range of the third radio device, and
wherein the third radio channel with the third hopping table is identical to the first radio channel with the first hopping table.

2. The automation system according to claim 1 , wherein the first radio module is configured to integrate up to eight first radio subscribers.

3. The automation system according to claim 1 , wherein the changing of the frequency of the first radio channel and the frequency of the second radio channel is performed simultaneously.

4. The automation system according to claim 1 , wherein a change of frequency of the radio channels takes place after a predetermined time interval.

5. The automation system according to claim 4 , wherein the time interval is in between one hundred microseconds and ten milliseconds.

6. The automation system according to claim 1 , wherein one of the synchronization elements includes a synchronized clock and wherein the associated synchronization signal is output based on a time of the synchronized clock, wherein a time of the synchronized clock is set based on the signal output from the clock master.

7. The automation system according to claim 6 , wherein the signal output by the clock master comprises a time.

8. A radio device for wireless integration of at least one radio subscriber into an automation system, the radio device comprising:
a first radio subscriber, a second radio subscriber and a third radio subscriber,
wherein the first radio device further comprises a first synchronization element, a first radio module and a first connection for the bus system; and
wherein the first radio module is configured to establish a first radio connection to a first radio subscriber for data exchange between the first radio subscriber and a bus system,
the first radio connection having a first radio channel, the first radio channel comprising a first frequency range,
the first radio module comprising a first synchronization input, the first synchronization element being configured to output a first synchronization signal to the first synchronization input of the first radio module based on a signal received for the bus system from a clock master via the first connection, and
the first radio module being configured to change a frequency within the first frequency range of the first radio channel based on the first synchronization signal, the changing of the frequency within the first frequency range being carried out based on a first hopping table;
wherein the second radio device comprises a second synchronization element, a second radio module and a second connection for the bus system,
wherein the second radio module is configured to establish a second radio connection to a second radio subscriber for data exchanged between the second radio subscriber and the bus system, and
wherein the second radio connection has a second radio channel, wherein the second radio channel comprises a second frequency range,
the second radio module having a second synchronization input, the second synchronization element being configured to output a second synchronization signal to the second synchronization input of the second radio module based on a signal received for the bus system from the clock master via the second connection, and
the second radio module being configured to change a frequency within the second frequency range of the second radio channel based on the second synchronization signal, the changing of the frequency within the second frequency range being carried out based on a second hopping table;
wherein the third radio device comprises a third synchronization element, a third radio module and a third connection for the bus system,
wherein the third radio module is configured to establish a third radio connection to a third radio subscriber for data exchange between the third radio subscriber and the bus system, and
wherein the third radio connection comprises a third radio channel, wherein the third ra

Assignees

• Beckhoff Automation Gmbh

Inventors

• Schlotthauer Daniel
• Budde Torsten

Classifications

• H04W56/0015

  one node acting as a reference for the others · CPC title

• H04B1/713

  using frequency hopping · CPC title

• H04W76/15

  Setup of multiple wireless link connections · CPC title

• H04B2201/71384

  Look-up tables · CPC title

• H04B1/7156

  Arrangements for sequence synchronisation · CPC title