Device for transmitting data and control commands via radio connections in a distributed control system for one or more machines and/or processes
First Claim
1. A network having a plurality of nodes forming a distributed control system for a plurality of machines with pre-established communication connections between said nodes comprising:
- a system for pre-establishing communications between a plurality of nodes by assigning unique transmit and receive time slots to said plurality of nodes and for placing other nodes in a receive only state;
a radio transmitter and receiver at each node for receiving information from other nodes and transmitting information to other nodes via radio communications during transmit and receive time slots assigned to said node;
a local clock; and
a connection device connected to said local clock for enabling said transmitter and receiver during said time slots wherein each of said plurality of nodes is a transmitting node and transmits information to a pre-identified receiving node during a time said pre-identified node has a corresponding receive time slot, and receives information during a time slot in which another of said nodes is transmitting information, whereby communications are established between nodes needing information from other nodes, and said other nodes remain in a receive only state.
11 Assignments
0 Petitions
Accused Products
Abstract
In a distributed control system for one or more machines and/or one or more processes, data and control commands are transmitted via radio connections between nodes in the control system. The nodes operate with radio transmitters and radio receivers and comprise or are controlled by activation devices for activating their transmission and receiver functions. The nodes also operate with time-determination devices which comprise or control the abovementioned activation devices. The time-determination devices are arranged to determine the transmission or reception position of the nodes by means of the activation devices and allocated settings or controls. The abovementioned settings or controls can be determined by means of one or more schedules implemented in or for the control system, in which the nodes are given unique or co-ordinated transmission and reception times on the radio connections.
28 Citations
23 Claims
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1. A network having a plurality of nodes forming a distributed control system for a plurality of machines with pre-established communication connections between said nodes comprising:
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a system for pre-establishing communications between a plurality of nodes by assigning unique transmit and receive time slots to said plurality of nodes and for placing other nodes in a receive only state; a radio transmitter and receiver at each node for receiving information from other nodes and transmitting information to other nodes via radio communications during transmit and receive time slots assigned to said node; a local clock; and a connection device connected to said local clock for enabling said transmitter and receiver during said time slots wherein each of said plurality of nodes is a transmitting node and transmits information to a pre-identified receiving node during a time said pre-identified node has a corresponding receive time slot, and receives information during a time slot in which another of said nodes is transmitting information, whereby communications are established between nodes needing information from other nodes, and said other nodes remain in a receive only state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A network having a plurality of nodes forming a distributed control system for a plurality of machines comprising:
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a system which pre-establishes communication connections between nodes by assigning unique transmit and receive time slots to each node; radio transmitter and receiver at each node for receiving information from other nodes and transmitting information to other nodes via radio communications, a first set of said nodes being assigned to communicate in a first geographic region, and a second set of said nodes being assigned to communicate in a second geographic region; a local clock for identifying the time of transmission and receiving states of the node in time slots previously assigned to said nodes; a connection device for enabling said transmitter and receiver at said identified time wherein said node transmits information to a pre-identified node in a respective geographic region during a time said pre-identified node has a corresponding receive state, and receives information during a state in which another of said nodes is transmitting information, whereby communications are established between pre-identified nodes needing information from other nodes in the same region said connection device placing certain of said nodes in a receive state only, and means to switch the transmit and receive directions of a node in said second region to communicate with a node in said first region.
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16. A network having a plurality of nodes with pre-established communication connections between said nodes for controlling a plurality of machines comprising:
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a system for pre-establishing communications between said nodes by assigning unique transmit and receive time slots to said nodes; radio transmitter and receiver at each node for receiving information from other nodes, and transmitting information to other nodes via radio communications, a first set of said nodes being pre-assigned transmit and receive time slots to communicate with pre-identified nodes in a first geographic region and a second set of nodes being pre-assigned transmit and receive time slots to communicate with pre-identified nodes in a second geographic region at least one of said nodes operating in a receive state only; a local clock for identifying the respective transmit and receive time slots of each node; a connection device for enabling said transmitter and receiver at said identified time slots wherein a first node transmits information to a second, pre-identified node in a respective geographic region during a time slot a corresponding to a receive time slot of said second node, and said first node receives information during a time slot in which another of said nodes is transmitting information, whereby communications are established between pre-identified nodes needing information; signal detection apparatus at another of said nodes to detect said first node transmission; and means for forwarding said detected transmission from said another node to said second node when a signal level of said detected transmission is not sufficient to directly communicate with said second pre-identified node. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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Specification