Device in a system operating with CAN-protocol and in a control and/or supervision system
First Claim
1. Device in a CAN-system (standard ISO 11898), comprising modules (102A, 103A, 104A) which are intercommunicable via a digital serial communication (107A) and in which a control and/or supervisory function can realised from a first module or from a unit (108A), which is communicable with the CAN-system, belonging to one or more second module(s), characterised in that it comprises two or more communication parts (106A, 114A) which form part of the CAN-system, respectively between the CAN-system and the said unit, and which are communicable via one or more wireless connections, in that when a transmission is made from a first communication part (114A) to a second communication part (106A), the parts operate with a signal protocol which takes no account of arbitration and/or confirmation function(s) found in the CAN-system, and in that a particular receiving communication part (106A) executes or assists in conversion of the said signal protocol to the signal protocol of the CAN-system.
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Accused Products
Abstract
A control or supervision system incorporates a digital serial communication and modules which are mutually communicable to this and operate with CAN-protocol. A control desk can be wirelessly connected to one or more modules operating with a signal protocol which takes no account of arbitration and/or confirmation functions appearing in the CAN-system. A particular receiving communication part executes the conversion of said signal protocol to the signal protocol of the CAN-system. A device for controlling a function in a first module in a CAN-system via a wireless connection to a second module in said system. A system of mutually separate units, whereof each unit operates with a CAN-signalling protocol, intercommunicable by means of radiocommunications operating with an identification system in which a key allocation between the units is based upon identities that are assigned by a module in the unit or a master system.
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Citations
40 Claims
- 1. Device in a CAN-system (standard ISO 11898), comprising modules (102A, 103A, 104A) which are intercommunicable via a digital serial communication (107A) and in which a control and/or supervisory function can realised from a first module or from a unit (108A), which is communicable with the CAN-system, belonging to one or more second module(s), characterised in that it comprises two or more communication parts (106A, 114A) which form part of the CAN-system, respectively between the CAN-system and the said unit, and which are communicable via one or more wireless connections, in that when a transmission is made from a first communication part (114A) to a second communication part (106A), the parts operate with a signal protocol which takes no account of arbitration and/or confirmation function(s) found in the CAN-system, and in that a particular receiving communication part (106A) executes or assists in conversion of the said signal protocol to the signal protocol of the CAN-system.
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4. Device according to any of the preceding patent claims, characterised in that the modules are assigned to weaving machines which are installed in one or more weaving sheds and are respectively allocated one or more modules, and in that the unit comprises a service unit common to a number of weaving machines, preferably the majority of the total number of weaving machines, the said service unit preferably comprising or containing a personal computer (PC).
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5. Device according to any of the preceding patent claims, characterised in that one or more modules assigned to a weaving machine in a weaving shed are arranged such that they are connected via radiocommunication to a service function, which service function comprises or involves beam-changing, bobbin-changing, etc.
- 7. Device according to any of the preceding patent claims, characterised in that the unit provides information on faults occurring to a weaving machine in the weaving shed.
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8. Device according to any of the preceding patent claims, characterised in that the production which is attainable with weaving machines in a weaving shed and the service measures which are necessary to the weaving machines in order to maintain effective production can be synthesised with the aid of the unit.
- 9. Device according to any of the preceding patent claims, characterised in that where there are a number of machines (weaving machines) controlled by a common control unit, they are coupled together in a control network in which a particular machine has its own unique control frequency in order to prevent the various machines being disturbed by one another'"'"'s frequencies.
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10. Device according to any of the preceding patent claims, characterised in that the frequencies are chosen within the broad-band range, i.e. 2.4 GHz or above.
- 11. Device in a system of mutually separate units, e.g. machines (101A, 1103A) at a construction site, weaving machines (803A, 804A), etc., which are intercommunicable by means of radiocommunications (115A, 116A), these being able to be set up such that message channels can be realised between two or more of the said units, and in which the radio communications operate with an identification system in which a key allocation can be realised, which in a particular connection instance enables messages to be transferred between selected units only and in which a particular unit is designed with a system operating essentially with a CAN-signal protocol (standard ISO 11898), here referred to as a CAN-system, in which functions, stimulations, readings, etc. in modules (102A, 103A, 104A) making up the unit are intercommunicable via a digital serial connection (107A), characterised in that in each connection instance the key allocation between the units is based not upon the real identity of equipment performing the radiocommunication(s) but upon identity/identities assignable to the equipment, which identity/identities are brought about during coupling by a module in the unit involved and/or from a master system or master control centre.
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28. Device in a CAN-system (standard ISO 11898), comprising modules (1A, 2A, 3A, 4A) which can be connected via a digital serial communication (5A) and in which a function in a first module (1A) and/or equipment unit(s) controlled by this is/are intended to be able to be observed or registered at a location (A) for the placement(s) of the first module (1A) and/or of the equipment unit(s), characterised in that a radiocommunication equipment (8A, 9A) is arranged for connection with a part (9A) belonging to a second module (4A) in the system for the establishment of a radiocommunication channel (11A, 12A) between the first-named location (A) and a location (B) for the placement of the second module (4A), and in that, instead of the placement(s) of the first module and/or of its equipment unit(s), the radiocommunication equipment (8A, 9A) can be activated for initiation (i1) via a radio channel (11A) and the said part (9A) of the radiocommunication equipment by the activation of a signal (i2) in the second module, which signal activation (i2) induces the first module (1A), where there are no faults in the system, to perform its particular control and/or supervisory function, which in this case can be observed or registered at the location for the first module and/or its equipment unit(s).
- 33. Device according to any of the preceding patent claims, characterised in that the second module, when a signal is activated (i2) on the basis of the second activation in the second module, imitates a control or supervisory function., which normally can occur in the machine and/or process control, and/or generates a control and/or supervisory control operation which is especially cut out for the testing or fault-searching function.
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34. Device according to any of the preceding patent claims, characterised in that the radiocommunication equipment (8A, 9A) operates with two-way connections (11A, 12A) such that a stimulation of a controlled or supervised component or aggregate at the first module (1A) produces a feedback from the first module via the connection (5A) to the second module (4A), whereby an information signal (i3) representing the stimulation is generated, which information signal is transferred to the radio equipment part (9A) situated at the second module, information which is transferred in this way via the radiocommunication equipment being indicated or presented on or at the radiocommunication equipment part (8A) at the first module.
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35. Device according to any of the preceding patent claims, characterised in that those equipment parts which can be observed or registered at the first module comprise components, e.g. valve(s), thermometer(s), etc.
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36. Device according to any of the preceding patent claims, characterised in that the radiocommunication equipment operates at high frequencies, e.g. frequencies of 2.4 GHz or more.
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37. Device according to any of the preceding patent claims, characterised in that the radiocommunication equipment part (8A) at the first module (1A) is connected to those control or supervisory equipment part(s) served by the first module.
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38. Device in a CAN-system (standard ISO 11898), comprising modules (1A, 2A, 3A, 4A) which can be connected via a digital serial communication (5A) and in which a function in a first module (1A) and/or equipment unit(s) controlled by this is/are intended to be able to be observed or registered at a location (A) for the placement(s) of the first module (1A) and/or of the equipment unit(s), characterised in that a radiocommunication equipment (8A, 9A) is arranged for connection with a part (9A) belonging to a second module (4A) in the system for the establishment of a radiocommunication channel (11A, 12A) between the first-named location (A) and a location (B) for the placement of the second module (4A), and in that at the location for the placement of the first module the equipment unit(s) of the module is/are arranged such that they can be stimulated by means of the stimulation, e.g. with electrical and/or manual stimulation, in that the said stimulation initiates the transmission of a message (21A) generated or present in the first module (1A) over the connection (5A) to the second module (4A), and in that the said message hereupon induces activation of the radiocommunication equipment (8A, 9A) and transfer of an item of information responding to the said stimulation to an information-supplying unit (13A), which delivers the information in question.
Specification