WO2002093499A1 - Device and method for operating an installation by means of an operating board and/or speech input - Google Patents

Abstract

The invention relates to a device and a method for operating a technical installation using an input device, especially a keyboard and/or a screen having a touch-sensitive surface, and/or using speech input. The inventive device comprises a biometric measuring system for identifying a user on the basis of their biological characteristics. According to the invention, biological characteristics of a user are determined by means of a biometric measuring system, and are especially scanned and read in.

Description

description

Device and method for operating a device with an operating panel and / or a voice input

The invention is directed to a device and a method for operating a device, for example a technical system, preferably one or more machines, in particular work machines, with an operating panel or one or more manually operable input elements such as buttons, switches, sliders. the like and / or a screen is provided with a surface sensitive to pressure, light and / or electrical parameters and / or a computer mouse, joystick or the like and / or can be equipped with a voice input option.

Technology thrives on the use of manageable natural forces to achieve a foreseeable success. Due to the performance of modern systems, considerable forces and energies are sometimes used to process workpieces or other substances, to transport objects as well as liquids and gases, to separate and mix or the like. As beneficial as this power or energy use is in the normal case, people can be put at risk, in particular by operating errors and the resulting misdirected forces or energies. This applies, for example, to the potential energy of loads hanging on cranes, to the immense force of press or punching systems, to the centrifugal forces in the case of workpieces rotating at high speed, for example to lathes, to the inertial forces to large, moving masses such as ventilation propellers, and also for thermal energy in casting plants and a wide variety of industrial furnaces, for electrical energy in the case of insufficiently insulated connecting cables, etc. Since in many cases operating errors are caused by ignorance of technical contexts, the operating personnel is usually specially trained to operate such hazardous systems and is so - then only authorized to operate the machine in question. For example, a specially trained crane operator can be responsible for operating lifting devices arranged on trolleys for transporting workpieces in production halls. On the other hand, if such an operator is temporarily unavailable, for example due to a lunch break, it is a common practice to avoid long waiting times for the operator concerned to "step in" * and carry out supposedly simple operations without any prior knowledge in order to keep the production process flowing , In the absence of the required knowledge, many accidents occur, and for this reason, some systems require a key to authorize the operation, which must then get stuck during the entire operation. On the other hand, this method is not sufficiently secure, since such a key is often left behind, especially during shorter breaks. The assignment of passwords also does not lead to a more satisfactory result, since after entering this password once, the authorized operator is logged in and then no further query takes place as to whether the following operations actually originate from the authorized person.

This disadvantage of the described prior art results in the problem initiating the invention of creating a possibility of how a system that can be controlled via an operating panel can reliably obtain knowledge as to whether the current control instructions, if they are followed, may have large forces and / or energies effective actually come from a person authorized to do so.

This problem is solved in the context of a generic device by means of a biometric measuring system for identifying a person using the control panel on the basis of their biological characteristics; With such a biometric measuring system, within the scope of the generic According to the method, determine biological characteristics of the person using the operator panel, in particular by scanning and reading, the identity of the person concerned then being able to be determined on the basis of this data.

Biometric measuring systems fall back on unmistakable, human individualization features such as the dactylograms of the ten fingertips or the structure of an iris. These individualization indicators are almost as meaningful as a person's genetic code, and it is therefore not difficult to distinguish different people based on these biometric characteristics. On the other hand, in order to be able to actually identify a person, the corresponding biometric properties must be known for all identifiable people, that is, they must be stored in a memory. A memory in the area of the operating device in question is preferably used for this purpose, since a precise, biometric evaluation is accompanied by a large amount of data, and fast access to this data can be ensured by a short data transmission path. By comparing the biometric data read in by the current operator with the data records stored for the persons known to the system, the identity of the current operator can be determined on the basis of a match. Then, by means of additional information stored about the identified person, it can be decided how to proceed, in particular whether a selected function should be carried out or not, for example in order to refuse the selected function in the event of discrepancies and thereby avoid potential accidents. On the other hand, it could also be provided that, for example, certain warnings are first given to a conditionally authorized person, for example, "Pay attention to sufficient coolant supply!" Or "Caution in the processing area! ^Λ . If necessary, a red warning light could also light up first, the processing speed, Maximum speed, etc. are limited, etc. As you can see, a machine can be aware of the facts > cυ ro> P ¹ - ¹

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It can be excluded that a person can, due to carelessness, manually enter a machine function with one hand into the working area of the machine and injure himself. This is of particular importance when installing, maintaining and / or repairing a machine, where the personnel concerned often operate it without a protective cover for test purposes.

According to the invention, it is further provided that the fingerprint measuring system is equipped with a laser, the direction of which is controllably adjustable over a range, and with a device for collecting and evaluating the laser light reflected by a finger pad placed on it in order to determine its topography. Using a laser, it is possible to generate a narrowly delimited point of light on an attached fingertip in order to determine the reflective properties of the relevant surface point of a fingertip by measuring the reflected beam intensity. On the other hand, since the direction of the reflected beam depends on the angle of inclination of the surface element in question, the topographical properties of this surface element and thus the course of the linear elevations and depressions of the fingerprint in question can be determined in this way.

Further advantages result from the fact that the laser of the fingerprint measuring system is arranged behind a transparent pane, on which a fingertip to be measured can be placed. This transparent pane fulfills several functions: On the one hand, it is the sensitive one behind it

Protect the laser system from harmful environmental influences, on the other hand it forms a contact surface for a fingertip, so that it is brought into a plane orientation by deformation, which also assumes a well-defined position relative to the laser system, so that the geometric boundary conditions are optimally specified for an evaluation. to cυ to to P ¹ P ¹

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Compare criteria with stored reference values and thereby identify people. This evaluation device must be able to assign different, respectively distinguished points of two dactylograms to one another on the basis of their position and characteristics, slight deviations due to smaller distortions, displacements and / or rotations being filtered out. For this purpose, for example, after mutually assigning two points based on the same or similar characteristics, the sum of their respective distances after optimal coordinate transformation can be determined and compared with a predetermined limit value, and if this limit value is undershot, the identity of the two dactylograms and thus the current operator is determined assigned to the author of the relevant, stored reference dactylogram.

Within the scope of the method according to the invention it is provided that an operator's fingerprint is scanned and read. As already described above, dactylograms can be read in with relatively little effort; then a significant reduction in the amount of data can be made by determining characteristic points, and by comparing these characteristic points of two dactylograms, the identity of a person can be determined, such identification being extremely reliable since experience has shown that fingerprints differ People are always different from each other.

In another embodiment, the structure of an operator's iris is scanned and read. A laser is less suitable for this; Rather, the reading can take place here by means of a high-resolution camera, in which an electronic sensor for a multiplicity of pixels is arranged in the projection plane instead of a film. The

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Enable reading of their eye iris. This is the only way to ensure that the relevant system control function is given in full awareness by an authorized person, so that malfunctions can be excluded.

A further optimization can be achieved in that, in the case of an operator panel with an integrated or downstream system for interpreting the operating actions as system control commands, the AND link to the authorization signal is carried out by the command interpreter or a module or program sequence downstream of this signal flow. In many cases, particularly in the case of complex input systems with a pressure-sensitive screen film or mouse, the input signals can only be converted into a command that can be executed by the machine by means of an “intelligent, ie programmable system, which has a signal flow between the operator panel and the relevant system or its system Control is switched on. This signal conversion module or a program part taking over this function can also be referred to as a command interpreter. While in conventional operating devices the control commands recognized by the command interpreter were passed on to the machine uncritically, so that the machine always carried out the selected function, irrespective of which person it came from, the signal flow path from the control panel to the system controller is now according to the invention an additional lock has been inserted. However, this locking should only be active for certain functions, since, for example, “emergency stop” functions should still be carried out uncritically. The invention therefore recommends that this lock be inserted selectively for specific functions or groups of functions only after the command interpretation, but to be skipped for other functions.

The idea of the invention allows further development to the effect that after interpreting the selected command in an authorization table, the system control for the relevant system command required level of authorization is determined. Different levels of authorization can be assigned to a system: While functions such as “emergency stop ^{λλ should} be feasible for everyone (authorization level 0), the standard functions that can be carried out by trained operating personnel can be summarized as part of a first authorization level, and those functions during authorization level 2 assigned, the execution of which is reserved for installation, maintenance or repair personnel. The different functions are classified in the different authorization levels when the authorization table is created and can be changed by authorized personnel (e.g. with the highest authorization level). The functions to which authorization level 0 is assigned are released for everyone. In this case, the otherwise carried out identification phase is skipped.

To perfect the system according to the invention, provision can be made for the authorized persons or their identification numbers, data or the like to be determined on the basis of the degree of authorization found from a further table. A limited group of people is assigned to each authorization level (with the exception of authorization level 0). To simplify processing in the context of the identification process, the persons concerned can be individualized by means of an identification number which is entered on the one hand in the table and on the other hand enables the associated reference data of the persons concerned to be found from a memory.

In order to check the authorization of a current operator, the biometric data of the authorized persons are read out and compared with the sampled and read-in biometric data of the current operator. As already explained above, this comparison is preferably carried out on the basis of the stored data about the geometric arrangement and the character of selected points, which can take place in a relatively short period of time. On the other hand, since at each authorization level the group of people included is comparatively narrow and preferably includes the operating personnel selected for this on the one hand and the repair personnel on the other hand, the number of comparisons to be carried out in most cases is also small, so that the high working speeds of modern electronic devices ideally result from the authorization check there is no noticeable delay in the execution of the function.

On the other hand, the biometric data of the last identified person can be compared first with the currently read, biometric data if the last identified person is authorized for the currently selected system control function. This measure takes into account that the operator changes only relatively rarely, since usually only one authorized operator is available per shift, so that changes in the data of the "authorized * operator" occur only when the shift is changed and therefore comparatively rarely. For this reason, it can be assumed for this normal operation in the authorization check that in the vast majority of cases the last active operator is also the current operator, and therefore the computational effort for the authorization check can be reduced by only then the reference data of the other, authorized persons are also checked if there is a discrepancy between the last and the current operator.

If the input or authorization signal or the AND link from these signals is checked at short intervals during the execution of a system function that requires authorization, it can be provided that the system function is only continued if the signal in question continues to be logically “1 * is. With such functionality, the execution of highly critical CO co ro ro P ^{1 1}

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P- CD P ^J rr P Φ «rt O p H Φ hj XH tr Hi φ

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1 3 cn d 1 li P P li tr 1

1 O 1 1 1

Claims

claims

1. Device for operating a device, for example a technical system, preferably one or more machines, in particular work machines, with an operating panel (1) which is equipped with one or more, preferably manually operated, input elements such as buttons, switches, sliders or the like . and / or a screen (5) is provided with a surface sensitive to pressure, light and / or electrical parameters and / or a computer mouse, joystick or the like, characterized by a biometric measuring system (7) for identifying a control panel ( 1) user based on their biological characteristics.

2. Device according to claim 1, that the biometric measuring system (7) is a device for scanning and reading a fingerprint.

3. Apparatus according to claim 2, so that the distance of the fingerprint measuring system (7) to an input element (5) of the control panel (1) is greater than the length of a finger (12), preferably greater than the span of a hand.

4. The device according to claim 3, characterized in that the fingerprint measuring system (7) is equipped with a laser, the direction of which is controllably adjustable over a range, and with a device for collecting and evaluating the laser light reflected by an attached finger pad, to determine their topography.

5. The device according to claim 4, dadurchge - indicates that the laser of the fingerprint measuring system (7) is arranged behind a transparent disc (9) on which a fingertip to be measured can be applied.

6. The device according to claim 5, characterized in that the transparent disc (9) of the fingerprint measuring system (7) is arranged under a protective cap (10) approximately of the shape of a finger hat halved in the longitudinal direction, so that an opening (11) for inserting a finger (12) remains.

7. The device as claimed in claim 6, so that the finger insertion opening (11) faces away from the other input elements (5) of the control panel (1).

8. The device according to claim 7, so that the finger insertion opening (11) is located on the underside of the protective cap (10).

9. The device according to claim 1, so that the biometric measuring system (7) is a device for scanning and reading in the structure of an iris.

10. Device according to one of the preceding claims, that the biometric measuring system (7) is a device for speech recording and analysis.

11. Device according to one of the preceding claims, d a d u r c h g e k e n n z e i c h n e t that the distance of the biometric measuring system (7) or its measuring range (distance to the eyes of an operator when measuring iris) from the nearest machine is greater than an arm length.

12. Device according to one of the preceding claims, characterized in that the biometric measuring system (7) is coupled to a memory (17) for biometric reference values of certain people.

13. The apparatus according to claim 12, characterized in that the biometric measuring system (7) is coupled to an evaluation device in order to compare (18) read data (14) on the basis of biometric criteria with stored reference values (16) and thereby identify people ,

14. Method for operating a technical system, preferably one or more machines, in particular work machines, with an operating panel (1) which has one or more manually operable input elements such as buttons, switches, sliders or the like and / or one Screen (5) is provided with a surface sensitive to pressure, light and / or electrical parameters and / or a computer mouse, joystick or the like, characterized in that biological features of a person using the control panel (1) by means of a biometric measuring system (7 ) are determined, in particular scanned and read (14), in order to establish the identity of this person.

15. The method according to claim 14, so that a fingerprint (dactylogram) of an operator is scanned and read (14).

16. The method as claimed in claim 14, so that the structure of an operator's iris is scanned and read.

17. The method as claimed in claim 14, so that a sonogram of an operator is recorded and, if necessary, broken down into its spectral components.

18. The method according to any one of claims 14 to 17, characterized in that bio-prior to the activation of system functions requiring authorization The criteria of the operator are read in (14) and compared (18) with the corresponding and stored biometric values (16) of the persons authorized to activate the relevant system function, the selected system function only being triggered (19 ) when the authorization of the current operator is proven.

19. The method as claimed in claim 18, so that biometric criteria of an authorized operator are read in (14) after or during the selection (13) of a function linked to an authorization request.

20. The method according to any one of claims 14 to 19, characterized in that from the operator panel (1) selectable system control functions by an AND operation of the signal of an input element associated with the relevant system control function (13) and an authorization signal (14) against authorized persons are locked (15).

21. The method according to claim 20, characterized in that in an operator panel (1) with an integrated or downstream system (15) for interpreting the operations as system control commands, the AND operation with the authorization signal (14) from the command interpreter (15) or an assembly (18) or program sequence connected downstream of this signal flow is carried out.

22. The method according to claim 21, characterized in that after interpretation (15) of the selected command (13) in an authorization table, the degree of authorization required for the relevant system control command is determined.

23. The method as claimed in claim 22, and that the authorized persons or their identification numbers, data or the like are determined on the basis of the degree of authorization found from a further table (16).

24. The method as claimed in claim 23, so that the biometric data of the authorized persons are read out and compared (18) with the sampled and read biometric data (14) of the current operator in order to check their authorization.

25. The method according to claim 23 or 24, characterized in that the biometric data of the last identified person are first compared (18) with the currently read biometric data (14) if the last identified person is authorized for the currently selected system control function ,

26. The method according to any one of claims 18 to 25, characterized in that the input or authorization signal (13, 14) or the AND operation (18) from these signals is checked in short time intervals during the execution of an authorization-requiring system function, the system function (19) is only continued if the signal in question is still logically "1 *".

27. The method according to any one of claims 18 to 26, so that in addition to authorization by a biometric measurement system (7), authorization by entering a password (20) is also permitted.

28. The method according to claim 28, dadurchgeken nz certifies that the validity of a password an event and / or a specific deadline is limited.

29. The method according to any one of claims 14 to 28, so that the execution of a function (associated with an authorization request) is logged together with the name of the recognized, authorized person.