Battery-operated stationary sensor arrangement with unidirectional data transmission

Patent metadata

Field	Value
Publication number	US-10039084-B2
Application number	US-201615142154-A
Country	US
Kind code	B2
Filing date	Apr 29, 2016
Priority date	Sep 2, 2011
Publication date	Jul 31, 2018
Grant date	Jul 31, 2018

Abstract

Embodiments of the present invention provide a battery-operated stationary sensor arrangement with a unidirectional data transmission. The battery-operated stationary sensor arrangement has a sensor, a means for generating data packets and a means for transmitting data packets. The transmitter is implemented to determine sensor data and provide a sensor data packet based on the sensor data, wherein the sensor data has an amount of data of less than 1 kbit. The means for generating data packets is implemented to divide the sensor data packet into at least two data packets, wherein each of the at least two data packets is shorter than the sensor data packet. The means for transmitting data packets is implemented to transmit the data packets with a data rate of less than 50 kbit/s and a time interval via a communication channel.

First claim

The invention claimed is:

1. A method for unidirectional data transmission, the method comprising:
determining sensor data;
providing a sensor data packet based on the sensor data, the sensor data comprising an amount of data of less than 1 kbit;
generating data packets, wherein generating data packets comprises dividing the sensor data packet into at least three data packets, wherein each of the at least three data packets is shorter than the sensor data packet; and
transmitting the data packets with a data rate of less than 50 kbit/s and a time interval across a communication channel,
wherein generating the data packets comprises channel-encoding the at least three data packets such that only a part of the data packets is required for decoding the sensor data packet.

2. The method according to claim 1 , wherein transmitting the data packets comprises selecting the time interval of the data packets such that a battery load of a battery-operated stationary sensor arrangement is reduced.

3. The method according to claim 1 , wherein transmitting that data packets comprises providing the data packets with a symbol rate of less than 106 symbols and/or a code rate of less than 0.8.

4. The method according to claim 1 , wherein generating data packets comprises dividing the sensor data packet additionally into at least two data packets, wherein each of the at least two data packets is shorter than the sensor data packet; and
wherein transmitting data packets comprises transmitting the at least two data packets with a first transmission frequency via the communication channel and to transmitting the at least three data packets with a second transmission frequency via the communication channel.

5. The method according to claim 4 , wherein generating data packets comprises encoding the at least two data packets with a first code rate and encoding the at least three data packets with a second code rate, wherein the first code rate is higher than the second code rate.

6. The method according to claim 1 , wherein generating data packets comprises distributing a synchronization sequence across the data packets, so that an individual data packet shows worse synchronization characteristics than the synchronization across several data packets.

7. The method according to claim 1 , wherein transmitting data packets comprises distributing the data packets to different transmission frequencies, in order to be robust against interferences or existing or other systems.

8. The method according to claim 1 , the method further comprising:
receiving data packets, wherein receiving data packets comprises receiving at least two data packets and combining the at least two data packets and determine the sensor data packet; and
reading out the sensor data packet to determine the sensor data from the sensor data packet and to allocate the sensor data to a battery-operated stationary sensor arrangement.

9. The method according to claim 8 , wherein generating data packets comprises distributing a synchronization sequence across the data packets, so that an individual data packet comprises a partial synchronization sequence and shows worse synchronization characteristics than the synchronization across several data packets; and
wherein receiving the data packets comprises localizing the data packets in a receive data stream based on the partial synchronization sequences in order to receive the data packets.

10. The method according to claim 9 , wherein receiving data packets comprises determining the time interval of the data packets based on the partial synchronization sequences to localize the partial synchronization sequences in the receive data stream.

11. The method according to claim 8 , wherein the sensor data packet is transmitted divided into at least two data packets with a first transmission frequency and, in addition, is transmitted divided into at least three data packets with a second transmission frequency via the communication channel;
wherein receiving the data packets comprises at least one out of receiving the at least two data packets on a first transmission frequency and receiving the at least three data packets on the second transmission frequency; and
wherein receiving the data packets comprises at least one out of combining the at least two data packets and combining the at least three data packets, in order to determine the sensor data packet.

12. The method according to claim 11 , wherein the at least two data packets encoded with a first code rate and the at least three data packets encoded with a second code rate are transmitted via the communication channel;
wherein receiving the data packets comprises at least one out of decoding the at least two data packets and decoding the at least three data packets.

13. A non-transitory computer-readable medium including a computer program having a program code for executing the method according to claim 1 , when the computer program is executed on a computer or microprocessor.

14. A method for unidirectional data transmission, the method comprising:
determining sensor data with a sensor;
providing a sensor data packet based on the sensor data, wherein the sensor data comprises an amount of data of less than 1 kbit;
generating data packets, wherein generating data packets comprises dividing the sensor data packet into at least two data packets, and wherein each of the at least two data packets is shorter than the sensor data packet; and
transmitting the data packets with a data rate of less than 50 kbit/s and a time interval via a communication channel,
wherein generating data packets comprises distributing a synchronization sequence across the data packets, so that an individual data packet shows worse synchronization characteristics than the synchronization across several data packets.

15. A non-transitory computer-readable medium including a non-transitory computer-readable medium including a computer program having a program code for executing the method according to claim 14 , when the computer program is executed on a computer or microprocessor.

16. A method for unidirectional data transmission, the method comprising:
determining sensor data;
providing a sensor data packet based on the sensor data, wherein the sensor data comprises an amount of data of less than 1 kbit;
generating data packets, wherein generating data packets comprises dividing the sensor data packet into at least two data packets, wherein each of the at least two data packets is shorter than the sensor data packet; and
transmitting the data packets with a data rate of less than 50 kbit/s and a time interval via a communication channel;
wherein generating data packets comprises dividing the sensor data packet additionally into at least two data packets, wherein each of the at least two data packets is shorter than the sensor data packet; and
wherein transmitting data packets comprises transmitting the at least two data packets with a first transmission frequency via the communication channel and to transmitting the at least three data packets with a second transmission frequency via the communication channel.

17. A non-transitory computer-readable medium including a computer program having a program code for executing the method according to claim 16 , when the computer program is executed on a computer or microprocessor.

18. A battery-operated stationary sensor arrangement for performing an unidirectional data transmission, comprising:
a sensor for determining sensor data and for providing a sensor data packet based on the sens

Assignees

• Fraunhofer Ges Forschung

Inventors

• Bernhard Josef
• Kilian Gerd

Classifications

• H04W56/00

  Synchronisation arrangements · CPC title

• H04W52/0209

  in terminal devices · CPC title

• H04Q2209/82

  where the sensing device takes the initiative of sending data · CPC title

• H04Q2209/60

  for transmitting utility meters data, i.e. transmission of data from the reader of the utility meter · CPC title

• H04Q9/00 Primary

  Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom · CPC title