Method for the automated control of a technical installation and process control system for carrying out said method

• US 20050222691A1
• Filed: 01/31/2005
• Published: 10/06/2005
• Est. Priority Date: 07/29/2002
• Status: Active Grant

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Kroener, Juergen, Sinn, Ulrich, Rebellius, Matthias, Glas, Karl
• Granted Patent: US 7,177,708 B2
• Time in Patent Office: Days
• US Class Current: 700/19
• CPC Class Codes: G05B 19/41855 by local area network [LAN], network structure
• CPC Class Codes: G05B 2219/31162 Wireless lan
• CPC Class Codes: G05B 2219/31175 Message comprises identification of sender, receiver, command and parameter
• CPC Class Codes: G05B 2219/33192 Radio link, wireless
• CPC Class Codes: G05B 2219/36133 MMI, HMI: man machine interface, communication
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

A method and a system for the automated control of a technical installation (2) having a plurality of installation components (4) that are interconnected by data transmission in order to carry out process steps. Control commands (S) which are generated by a central control device (6) are fed to these components in accordance with process control signals (P) that are sent to the device. Process control signals (P) that are generated in a mobile operator unit (12) are wirelessly transmitted to interfaces (14) and are forwarded by the latter to the control device (6). The installation components (4) for which the system considers the process control signals (P) received from the mobile operator unit (12) during the generation of the corresponding control commands (S) are released using a local characteristic value (O) for the mobile operator unit (12).

Claims

1. A method for the automated control of a technical installation having a plurality of installation components, which are interconnected by data transmission, the method comprising:

generating process control signals in a mobile operator unit;

wirelessly transmitting to interfaces the generated process control signals;

forwarding the transmitted process control signals by the interfaces to a central control device;

receiving by the central control device the forwarded process control signals;

generating, by the central control device, control commands taking into consideration the received process control signals; and

feeding by the central control device to at least one of the plurality of installation components the generated control commands,

wherein the installation components for which process control signals received from the mobile operator unit are relevant when associated control commands are generated, and

wherein the installation components are released using a local characteristic value for the mobile operator unit, where the local characteristic value is determined using the interfaces which wirelessly communicate with the mobile operator unit.

2. The method as claimed in claim 1, wherein a control command category is specified when an installation component from the installation components is released, such that respective process control signal is relevant only when generating control commands associated with the specified control command category.

3. The method as claimed in claim 2, wherein operating parameters for signal transmission between the respective interface and the mobile operator unit are evaluated to determine the local characteristic value.

4. The method as claimed in claim 3, wherein the operating parameters comprise a signal intensity characteristic for signal transmission between the interface and the respective mobile operator unit.

5. The method as claimed in claim 3, wherein, to release the installation components that can be influenced through the mobile operator unit, the local characteristic value and the local parameters stored for each installation component are used to establish whether respective installation component can be observed from a current location of the mobile operator unit.

6. The method as claimed in claim 1, wherein operating parameters are evaluated to determine the local characteristic value.

7. The method as claimed in claim 6, wherein the operating parameters comprise a signal intensity characteristic for signal transmission between an interface and respective mobile operator unit.

8. The method as claimed in claim 7, wherein, to release the installation components that can be influenced through the mobile operator unit, the local characteristic value and the local parameters stored for each installation component are used to establish whether respective installation component can be observed from a current location of the mobile operator unit.

9. The method as claimed in claim 1, wherein, to release the installation components that can be influenced through the mobile operator unit, the local characteristic value and the local parameters stored for each installation component are used to establish whether respective installation component can be observed from a current location of the mobile operator unit.

10. The method as claimed in claim 9, wherein an interface is selected from the plurality of available interfaces, said selected interface is currently used exclusively to transmit the process control signals to the central control device such that a positional characteristic that is distinctive for the selected interface is used as the local characteristic value for the mobile operator unit.

11. The method as claimed in claim 9, wherein signal transmission time for transmission of signals between the mobile operator unit and an interface is taken into account to determine the local characteristic value.

12. The method as claimed in claim 1, wherein an interface is selected from the plurality of available interfaces, said selected interface is currently used exclusively to transmit the process control signals to the central control device such that a positional characteristic that is distinctive for the selected interface is used as the local characteristic value for the mobile operator unit.

13. The method as claimed in claim 12, wherein, in a signal transmission between the mobile operator unit and the interface, a control channel is established in addition to a transmission channel for the process control signals, and wherein the local characteristic value is determined in accordance with transmission characteristics of the control channel t.

14. The method as claimed in claim 1, wherein, in determining the local characteristic value, transmission time for transmission of signals between the mobile operator unit and a respective interface is relevant.

15. The method as claimed in claim 14, wherein, in the transmission of signals between the mobile operator unit and the respective interface, a control channel is established in addition to a transmission channel for the process control signals, and determining the local characteristic value in accordance with transmission characteristics of the control channel.

16. The method as claimed in claim 1, wherein, in a signal transmission between the mobile operator unit and a respective interface, a control channel is established in addition to a transmission channel for the process control signals, and wherein in determining the local characteristic value, transmission characteristics of the control channel are evaluated.

17. A process control system for a technical installation, comprising:

a plurality of installation components;

a central control device that uses incoming process control signals to generate control commands for the plurality of installation components, where the control device is connected to the installation components on data output side;

a plurality of interfaces connected to the central control device on the central control device'"'"'s data input side; and

a plurality of mobile operator units connected to the plurality of interfaces on the data input side of the plurality of interfaces for transmission of the process control signals,

wherein the control device comprises a release module, which uses a local characteristic value distinctive for associated mobile operator unit from the plurality of the mobile operator units, the local characteristic value is determined via the plurality of interfaces that wirelessly communicate with the mobile operator units to assign each process control signal received from a mobile operator unit an identifier of the installation component for which the process control signal is relevant when the control commands addressed to the installation components are generated.

18. The process control system as claimed in claim 17, wherein, during identification of the installation components, the release module, specifies for each of the installation components involved a control command category for relevance of the process control signal.

19. The process control system as claimed in claim 17, wherein the release module is connected to sensors on the input side, which are provided to detect operating parameters, and wherein said operating parameters are characteristic for the signal transmission between the respective interface and the mobile operator unit.

20. The process control system as claimed in claim 19, wherein the operating parameters comprise a signal intensity for the signal transmission between the respective interface and the mobile operator unit.

21. The process control system as claimed in claim 17, wherein the release module uses the local characteristic value and local parameters stored for the respective installation component to determine whether the respective installation component can be observed from current location of the mobile operator unit.

22. The process control system as claimed in claim 17, wherein the release module uses a positional characteristic as the local characteristic value, which is distinctive for the interface that is currently used exclusively to transmit the process control signals to the central control device.

23. The process control system as claimed in claim 17, wherein, on the input side, the release module is connected to time measuring devices to record a characteristic signal transmission time between the respective interface and the mobile operator unit.

24. The process control system as claimed in claim 17, wherein the interfaces are configured for a multi-channel, wireless signal transmission to the mobile operator units, and wherein on the input side, the release module is connected to sensors, which are provided to detect operating parameters characteristic of transmission properties of a control channel established between the respective interface and the mobile operator unit, where the control channel is parallel to a transmission channel for the process control signals.