METHOD FOR AUTOMATED CONTROL OF A MACHINE COMPONENT

• US 20170097626A1
• Filed: 09/30/2016
• Published: 04/06/2017
• Est. Priority Date: 10/01/2015
• Status: Abandoned Application

• Current Assignee: B&R Industrial Automation GmbH (ABB Limited)
• Original Assignee: Bernecker + Rainer Industrie-Elektronik GmbH (ABB Limited)
• Inventors: VESELIC, Miodrag, BURGSTALLER, Walter, KAUFLEITNER, Franz
• Application Number:
  US15/281,633
• Publication Number:
  US 20170097626A1
• Time in Patent Office: Days
• CPC Class Codes: F16P 3/144 using light grids
• CPC Class Codes: G05B 11/011 details of the correcting means
• CPC Class Codes: G05B 19/0428 Safety, monitoring G05B19/0423 takes precedence
• CPC Class Codes: G05B 2219/34465 Safety, control of correct operation, abnormal states
• CPC Class Codes: G05B 2219/50193 Safety in general
• CPC Class Codes: G06V 20/52 Surveillance or monitoring of activities, e.g. for recognising suspicious objects recognising microscopic objects G06V20/69

Abstract

The invention relates to a method for automated control of at least one machine component (1) in a plant (2). The machine component (1) is connected via a secure bus connection (6) to an automation component (7) by which it is controlled. The plant (2) has a safety area (4) monitored by means of at least one safety sensor (3), where a deviation of the measurement pattern (M) measured by the safety sensor (3) from a definition area (D) indicates a hazardous situation for protection objects (5), in particular persons and/or valuables. The machine component (1) triggers a protective action if a hazardous situation arises. The measurement patterns (M) measured by the safety sensor (3) are transmitted to the automation component (7) via the secure bus connection (6). The automation component (7) defines the definition area (D) using parameter data of the automated control, ascertains the presence of a hazardous situation, and activates the machine component (1) for performing the protective action.

Claims

1. Method for automated control of a least one machine component (1) in a plant (2) with an automation component (7), the machine component (1) being linked to an automation component (7) via a secure bus connection (6), the plant (2) having a safety area (4) monitored by means of at least one safety sensor (3) and the ma-chine component (1) performing a protective action if a hazardous situation detected by the safety sensor (3) for protection objects (5), in particular persons and/or valuables, arises, characterized in that a measurement pattern (M) measured by the safety sensor (3) is transmitted over the secure bus connection (6) to the automation component (7), the automation component (7) ascertaining the presence of a hazardous situation on the basis of a measurement pattern (M) and activating the machine component (1) to perform a protective action.

2. The method according to claim 1, characterized in that the protective action comprises a deactivation of at least parts of the machine component (1), the assumption of a protective position, an active reaction, for example the stopping of at least parts of the machine component (1), a change in the speed of at least parts of the ma-chine component (1), an evasive movement, the triggering of a safety device such as an airbag or an extinguishing device, the triggering of an alarm or a combination thereof.

3. The method according to claim 1, characterized in that hazardous situation is defined as the detection of foreign objects or persons in the safety area (4), the detection of positional errors of machine component (1) parts and/or the detection of positional errors of plant objects (8).

4. The method according to claim 1, characterized in that the safety sensor (3) has at least one light grid arrangement (9).

5. The method according to claim 4, characterized in that at least two light grid arrangements (9, 9′

) can be arranged parallel next to one another in relation to the grid plane and displaced from one another in relation to the longitudinal extension of their light sensors.

6. The method according to claim 4, characterized in that at least one light grid arrangement (9) is arranged diagonally in relation to a direction of movement of a plant object (8).

7. The method according to claim 1, characterized in that the automation component (7) ascertains the hazardous situation on the basis of the measurement pattern (M) and using parameter data and/or process data of the control of the machine component (1) or, as the case may be, the plant (2).

8. The method according to claim 7, characterized in that the process data is selected from a position, a speed and/or an acceleration of elements of the machine component (1) and/or a position, a speed and/or an acceleration of drive means for a plant object (8).

9. The method according to claim 7, characterized in that the parameter data is selected from an operating mode, geometric dimensions of machine parts and/or the presence of optional machine parts.

10. The method according to claim 1, characterized in that the automation component (7) defines a definition area (D), wherein a deviation of the measurement pattern (M) or a portion of this measurement pattern (M) measured by the safety sensor (3) and transmitted to the automatization component (7) from the definition area (D) indicates a hazardous situation.

11. The method according to claim 10, characterized in that the automatization component (7) factors in a current or past measurement pattern (M) of the safety sensor (3) for ascertaining the definition area (D).

12. The method according to claim 11, characterized in that a certain change in the current or past measurement pattern (M) triggers a defined temporal change of the definition area (D).

13. The method according to claim 1, characterized in that the measurement pattern (M) is transmitted synchronously from the at least one safety sensor (3) to the automation component (7) via the secure bus connection (6).

14. The method according to claim 1, characterized in that the data transmitted from the safety sensor (3) to the automation component (7) are each provided with a time stamp.

15. Automation component (7) for controlling at least one machine component (1) in a plant (2), characterized in that the automation component (7) has an interface via a secure bus connection (6) to at least one safety sensor (3), the safety sensor (3) monitoring a safety area (4) and the safety sensor (3) transmitting a measured measurement pattern (M) to the automation component (7) via the secure bus connection (6), the automation component (7) evaluating the measurement pattern (M) to ascertain the presence of a hazardous situation for protection objects (5), in particular persons and/or valuable, and, if a hazardous situation is present, activating the machine component (1) for executing a protective action.

16. The automation component (7) according to claim 15, characterized in that the hazardous situation is ascertained on the basis of the measurement pattern (M) and using parameter data and/or process data of the control of the machine component (1) or, as the case may be, the plant (2).

17. The automation component (7) according to claim 16, characterized in that the automatization component (7) connects the measurement pattern (M) obtained by the at least one safety sensor (3) on the basis of temporal information to the parameter data and/or the process data.

18. The automation component (7) according to claim 17, characterized in that the temporal information of the measurement pattern (M) is ascertained on the basis of a synchronous transmission via the secure bus connection (6) and/or on the basis of a time stamp.