METHOD FOR GENERATING A TIME TABLE FOR SENSORS

• US 20150215960A1
• Filed: 08/26/2013
• Published: 07/30/2015
• Est. Priority Date: 08/28/2012
• Status: Active Grant

• Current Assignee: Koç University
• Original Assignee: Koç University
• Inventors: Sadi, Yalcin, Coleri Ergen, Sinem
• Granted Patent: US 9,622,258 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 12/4035 in which slots of a TDMA packet structure are assigned based on a contention resolution carried out at a master unit TDM/TDMA multiplex systems per se H04J3/1694; hybrid switching systems H04L12/64
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/56 based on priority criteria
• CPC Class Codes: H04W 72/569 of the traffic information
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

A method for generating a time table (L) determines the data exchange times between a control unit and wireless sensors in a vehicle, which includes said control unit. The wireless sensors detect properties of components of the vehicle and/or surrounding parameters, and carrying out data exchange with the control unit by establishing a wireless connection with at least one wireless port provided in the control unit. The method can include calculating the data exchange periods and/or the data exchange durations between each sensor and the control unit; generating a time table (L) having an adjustable table length (T) according to the data exchange periods and/or data exchange durations; splitting the time table (L) into subunits (R) according to the data exchange periods and/or data exchange durations; and entering the times at which each sensor performs data exchange with the control unit into the table according to a predefined priority order.

Claims

1. A method for generating a time table (L) determining the data exchange times between at least one control unit and at least two wireless sensors in a vehicle which comprises said at least one control unit controlling the functioning of the vehicle;

and said at least two wireless sensors detecting the properties of components of the vehicle and/or surrounding parameters, and suitable for carrying out data exchange with a control unit by establishing a wireless connection with at least one wireless port provided in the control unit;

the method comprises the steps of calculating data exchange periods and/or data exchange durations between each sensor and the control unit;

generating a time table (L) having an adjustable table length (T) according to the calculated and/or predetermined data exchange periods and/or data exchange durations;

splitting the time table (L) into subunits (R) according to the calculated and/or predetermined data exchange periods and/or data exchange durations; and

entering the times at which each sensor is to perform data exchange with the control unit into the table according to a predefined order of priority, which is calculated based on the data exchange period and/or the data exchange duration of each sensor.

2. The method according to claim 1, wherein the length of the time table (L) is determined to be equal to the data transmission period of a sensor having the longest data transmission period.

3. The method according to claim 1, wherein the length of the time table (L) is determined to be equal to the least common multiple of the data exchange period of each sensor with the control unit.

4. The method according to claim 1, wherein the lengths (P) of each subunit of the time table (L) are equal.

5. The method according to claim 4, wherein the length (P) of each subunit is determined to be equal to the data transmission period of that sensor having the shortest data transmission period.

6. The method according to claim 4, wherein the length (P) of each subunit is determined to be equal to the greatest common divisor of the data exchange period of each sensor with the control unit.

8. The method according to claim 1, wherein the predefined order means that the sensor having the shortest data exchange period is placed first to the table and that the sensor having the longest data exchange period is placed last to the table.

9. The method according to claim 1, wherein during the step of entering the times at which each sensor is to perform data exchange with the control unit into the table according to a predefined order of priority, each sensor is placed to that subunit (R) first which has the greatest time gap in the table.

10. The method according to claim 1 further comprising the steps of

measuring the data exchange periods and the data exchange durations of each sensor in a periodic manner, and

updating the time table (L) according to current or actual data.

11. The method according to claim 1 further comprising the step of calculating the synchronous and consecutive data exchange durations of two sensors making consecutive data exchange with different control units with which they are in wireless communication.

12. The method according to claim 11, wherein if the synchronous data exchange durations of said sensors with different control units with which they are in wireless communication is shorter than their consecutive data exchange durations, the sensors perform a synchronous data exchange with the control units.

13. The method according to claim 11, wherein if the synchronous data exchange durations of said sensors with different control units with which they are in wireless communication is longer than their consecutive data exchange durations, the sensors perform a consecutive data exchange with the control units.

7. (canceled)