Granted Patent B2

US 12,223,824 · App. 17/627,344 · Granted Feb 11, 2025

Inventors: Maja Sliskovic (Ettlingen, DE); Christian Sauer (Karlsdorf-Neuthard, DE)

Assignee: SEW-EURODRIVE GMBH & CO. KG

G08B27/006G05B19/41895H04W4/025H04W4/90

Abstract

Claims (50)

1. A method for operating a mobile system as a subscriber in a wireless network having a plurality of subscribers, an operational environment of the mobile system being subdivided into different zones, comprising:

detecting a current position of the mobile system within the zones;

determining a connection quality of the mobile system in the network; and

adapting a behavior of the mobile system based on the determined connection quality and the detected position within the zones;

wherein the determination of the connection quality includes receiving and evaluating test messages that are receivable as a broadcast in the network; and

wherein at least one of the test messages includes at least one unique identification, a counter that is unalterable during a forwarding operation, and an originator time stamp.

2. The method according to claim 1 , wherein the determination of the connection quality includes receiving and evaluating the test message that is receivable as a broadcast in the network.

3. The method according to claim 2 , wherein the test message includes at least one unique identification, a counter that is unalterable during a forwarding operation, and an originator time stamp.

4. The method according to claim 1 , wherein at least one of the test messages includes information about an originator of the test message.

5. The method according to claim 1 , wherein the determination of the connection quality includes evaluating, by the mobile system, a delay, a transmission probability, and/or a sequence of the received test messages and a redundancy of routes via which the test messages are received.

6. The method according to claim 5 , wherein the delay is determined based on a difference between a receipt time and an originator time stamp of the test message.

7. The method according to claim 5 , wherein the determination of the connection quality includes transmitting a test message and wherein multiple conditions apply to the transmission of the test message.

8. A method for operating a mobile system as a subscriber in a wireless network having a plurality of subscribers, an operational environment of the mobile system being subdivided into different zones, comprising:

detecting a current position of the mobile system within the zones;

determining a connection quality of the mobile system in the network; and

adapting a behavior of the mobile system based on the determined connection quality and the detected position within the zones;

wherein the determination of the connection quality includes transmitting a test message;

wherein multiple conditions apply to the transmission of the test message; and

wherein the transmitting of the test message includes forwarding a received test message, and wherein the multiple conditions include a validity period for a test message as a condition and the test message not being forwarded if the delay is greater than the validity period.

9. A method for operating a mobile system as a subscriber in a wireless network having a plurality of subscribers, an operational environment of the mobile system being subdivided into different zones, comprising:

detecting a current position of the mobile system within the zones;

determining a connection quality of the mobile system in the network; and

adapting a behavior of the mobile system based on the determined connection quality and the detected position within the zones;

wherein the determination of the connection quality includes transmitting a test message;

wherein multiple conditions apply to the transmission of the test message; and

wherein prior to the transmission, a test message is supplemented with information pertaining to the mobile system and a forwarding counter of the test message is incremented.

10. The method according to claim 9 , wherein the information pertaining to the mobile system includes a time stamp of a transmission time and an address of a transmitter.

11. The method according to claim 1 , wherein a good connection quality corresponds to a quantitative representation of at least one network parameter exceeding a predefined connection threshold value, and/or an insufficient connection quality corresponds to a quantitative representation of at least one network parameter undershooting a predefined connection threshold value.

12. A method for operating a mobile system as a subscriber in a wireless network having a plurality of subscribers, an operational environment of the mobile system being subdivided into different zones, comprising:

detecting a current position of the mobile system within the zones;

determining a connection quality of the mobile system in the network; and

adapting a behavior of the mobile system based on the determined connection quality and the detected position within the zones;

wherein a good connection quality corresponds to a quantitative representation of at least one network parameter exceeding a predefined connection threshold value, and/or an insufficient connection quality corresponds to a quantitative representation of at least one network parameter undershooting a predefined connection threshold value; and

wherein the adapting of the behavior includes the mobile system preventively not driving in safety-critical zones in response to the connection quality being insufficient.

13. The method according to claim 1 , wherein the adapting of the behavior includes: (a) continuing a normal operation if a good connection quality is determined when the mobile system is located in a non-critical zone; (b) a current task is continued if the mobile system is located in a critical zone; (c) if an insufficient connection quality is determined, the current task is ended and a search for a network access is subsequently performed when the mobile system is located in a non-critical zone; and/or (d) if the mobile system is located in a critical zone, the critical zone is left immediately and a search for a network access is performed.

14. The method according to claim 1 , further comprising transmitting a feedback message to a central alarm gateway, the feedback message including at least a status of the mobile system.

15. The method according to claim 14 , wherein the feedback message is transmitted as a unicast message via a selected route, the feedback message includes a list of addresses of the mobile systems of the selected route, and the selected route is a safest, a most reliable, and/or a fastest route.

16. The method according to claim 1 , further comprising:

receiving an alarm message that is available in the network in the form of a broadcast;

forwarding the alarm message as a broadcast to the network;

activating an alarm state of the mobile system based on the alarm message; and

adapting the behavior of the mobile system based on the alarm state.

17. The method according to claim 16 , wherein the alarm state is revoked only by an alarm acknowledgment.

18. The method according to claim 1 , wherein at least one wireless communications interface of a mobile system is used for receiving and/or transmitting messages.

19. The method according to claim 1 , wherein the messages are transmitted via the wireless communications interface electromagnetically, electromagnetically via WLAN and/or Bluetooth, optically, acoustically, and/or inductively.

20. A method for operating an alarm gateway as a subscriber in a wireless network having a plurality of subscribers, comprising

repeatedly transmitting a test message to the network as a broadcast;

wherein the test message includes at least one unique identification, a counter that is unalterable during a forwarding operation, and an originator time stamp.

21. The method according to claim 20 , wherein an alarm signal is received via an alarm interface, the alarm gateway is set into an alarm state, and the alarm gateway, in the alarm state, transmits at least one alarm message as a broadcast to the network instead of the test messages.

22. The method according to claim 20 , wherein, in response to an acknowledgment of the alarm by a user, the alarm gateway is reset from the alarm state to a normal state and resumes the repeated transmission of test messages.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (33)