Synchronized wireless networked system
AssigneeABB AB
InventorAke Hellstrom
Life of this patent
Estimating the term…
Abstract
A sheet making system that has two or more separated nodes one of which may be a scanner sensing head and the other of which may be a scanner end column. Each node has a wireless system and receives power from a common AC source. Each node receives events data associated with the wireless system. Each wireless system has a circuit that obtains from the common AC power source an associated events data acquisition clock that is the same for all of the wireless systems to time synchronize to each other the associated events data signals at each of the two or more nodes. A central computer may be connected to the two or more nodes. The communication between the computer and each of the two or more nodes can be wireless or by a LAN or other mechanisms.
Claims12
A method for time synchronizing signals in a sheet making system that has two or more nodes separated from each other that each receive signals having data therein about sheet making events associated with each of said two or more nodes, said method comprising:
- providing at each of said two or more nodes a wireless system for acquiring at each of said nodes said signals having said associated sheet making events data, each of said wireless systems having a distinct processing device;
- and
- comparing at each of said two or more nodes the timing of associated sheet making events data signals to the timing of the AC voltage waveform on a power line connected to power each of said two or more wireless sheet making events data acquiring systems to thereby time synchronize said associated sheet making events data signals at each of said two or more nodes to each other.
A method for time synchronizing signals in a sheet making system that has two or more nodes separated from each other that each receive signals having data therein about sheet making events associated with each of said two or more nodes, said method comprising:
- providing at each of said two or more nodes a wireless system for acquiring at each of said nodes said signals having said associated sheet making events data, each of said wireless systems having a distinct processing device and a data acquisition clock;
- and
- using an AC power signal on a power line connected to power each of said two or more wireless sheet making events data acquiring systems as a source of a common clock for all of said two or more wireless sheet making events data acquiring systems data acquisition clocks to time synchronize said associated sheet making events data signals at each of said two or more nodes to each other.
A sheet making system comprising:
- two or more nodes separated from each other;
- each of said two or more nodes comprising a wireless system for acquiring at each of said nodes signals having associated events data, each of said wireless systems receiving signals having data therein about events associated with a respective one of each of said two or more wireless systems and connected to receive AC power from a common source of AC power;
- and
- each of said two or more wireless systems comprising:
- a circuit that obtains from said common source of AC power an associated events data acquisition clock that is the same for all of said wireless systems at said two or more nodes to thereby time synchronize said associated events data signals at each of said two or more nodes to each other;
- and
- a distinct processing device.
Dependencies are inferred from the claim text.