DE102008005761A1 - Method for work planning by human movement modeling device, involves performing real human movement, where image of real human movement is determined, and image is transferred in motion simulation model - Google Patents

Abstract

The method involves performing a real human movement, where an image (19) of the real human movement is determined. The image is transferred in a motion simulation model. The real human movement is performed using a real person (7) in a real work environment. The real human movement is performed in a planning scenario (3) of the work environment provided with a planning medium (5). An independent claim is included for a device for modeling human movements and for electronic data processing.

Description

The The invention relates to a method for factory planning using a Device for modeling human motion sequences.

It is known to plan a factory layout by means of model-based simulations of production sequences. The DE 102 40 338 A1 shows a method and an arrangement for process planning of manufacturing steps. The subsequent assembly layout can be tuned or optimized by the simulations even before an actual embodiment of the subsequent production processes. Furthermore, it is known to additionally include models of human motion sequences in a layout and process planning of assembly plants. The dissertation "System for efficient layout and process planning of hybrid assembly systems", Ulrich Roßgoderer, Chair of Mounting Systems and Industrial Management of the Technical University of Munich, describes such a procedure.

task The invention is to enable improved factory planning.

The Task is with a procedure for factory planning with the help of a Device for modeling human motion sequences with the following steps: Perform a real human movement, determining an image of real human movement and convicting of the image into a motion simulation model. Under human Movement can be any movement, for example be understood any humanoid movement, such as he is for example carried out by a person. Advantageous The human movement can be recorded in real time. For various tools of a so-called digital Factory, as it is suitable for factory planning, can so-called human models or the human motion simulation model be used. The human motion simulation model can be kinematic Information is based. The determined is advantageous Transferred image into the motion simulation model. Usually necessary steps that require a lot of manual effort to create individual movements for different body axes and limbs for manual programming of the Require human simulation models are not necessary. Advantageous is it possible to make an exact model for specific target groups. For this purpose can appropriately suitable subjects the real human movement carry out. Besides, due to of the obtained human motion simulation model analyzes of work spaces as well as ranges for workplace design be made. Besides, it is possible based on that Perform time analyzes based on the so-called MTM-1 method. Furthermore, ergonomics analyzes, such as lifting, Posture and energy use performed become. Overall, a more authentic kinematics of virtual simulated by the motion simulation model Movements. Finally, it is possible to create documentation, such as ergonomics reports and animated work instructions.

at An embodiment of the method is the following step provided: performing the real human movement by a person in a work environment. Advantageously, the Person in the work environment, in a sense, with this interact and thus move in a typical way. It is possible that it is the movement around a typical work step, such as lifting and transporting an object. Advantageously, for example a flow simulation of work activities for the planning of a Manufacturing cell are generated.

at Another embodiment of the method is as follows Step provided: perform the real human Motion sequence in a provided with planning tools planning scenario of the working environment. Advantageously, the real human movement in a typical way as well as spatial orientation without the factory being planned actually being real exists. For orientation quickly up and degradable planning aids.

In a further embodiment of the method, the following step is provided: determination of the image of the real human movement sequence by means of a tracking system. For example, video-based or even infrared-based tracking systems may be considered. So-called tracking systems are used, for example, to perform augmented reality applications. The DE 10 2004 051 600 B4 as well as the DE 10 2005 058 240 A1 exemplify such systems. By means of the tracking system, for example, the position of the person performing the human movement can be determined over a time sequence. The position of the person can be determined in all six translational and rotational degrees of freedom.

In a further embodiment of the method, it is provided that the tracking system has at least one of the following features: At least one imager, markers attachable to the person and / or the planning aids and / or a person-assignable mechanical body tracking device. Advantageously, the position of the person over time can thus be determined. The markers can deliver evaluable position information by means of the tracking system. In the event that certain areas of human motion are obscured for the imager of the tracking system, advantageously, the mechanical body tracking device can provide additional information. The body tracking device can record, for example, an absolute position, a relative position and / or an angular position of a body joint of the person.

at Another embodiment of the method is as follows Step provided: temporal dissolution of the image of the real human movement through a time clock. Can be advantageous for example, various video streams and / or data of the body tracking device, So several different encoder systems synchronized with each other in time become.

at Another embodiment of the method is as follows Step provided: Spatially dissolving the image of the real human movement through coordinates. The For example, coordinates can be the temporal position history from specific points observed, such as the marks, describe.

at Another embodiment of the method is as follows Step provided: correlate and / or parameterization of at least a motion simulation function of the motion simulation model on the temporal and / or spatial resolution. Advantageously, by this step, the motion simulation function be adapted to the recorded movement, that this one for the recorded movement and thus for the person or person similar to that person Provides people a particularly accurate model. Advantageously This step can be done automatically, so that a complex Manual parameterization of the motion simulation model is not necessary. Advantageous is the motion simulation model adaptable without manual effort to a subject. So it can be advantageous by selecting a certain type of person particularly well-representing person the motion simulation model be adapted to such a group of people. So it's possible the motion simulation model by selecting appropriate Subjects, for example, country-specific and / or to adapt to gender in a simple way.

at Another embodiment of the method is as follows Step provided: Manipulating objects of the work environment during the real human movement. Advantageous can manipulate the manipulated objects into the motion simulation model be included, for example, to create an ergonomic analysis and / or for checking stored motion simulation functions to simulate a certain load on a virtual person.

The Task is also with a device for processing of computer data, software-technically furnished and / or designed solved for carrying out the method described above. This results in the advantages described above.

at an embodiment of the device is provided that this has a tracking system. By means of the tracking system can detect the image of the real human movement become.

Further Advantages, features and details emerge from the following Description, in which with reference to the drawing an embodiment is described in detail. Same, similar and / or functionally identical parts are provided with the same reference numerals.

It demonstrate:

1 a schematic view of a planning scenario of a factory planning with a device for modeling human motion sequences;

2 a three-dimensional view obliquely from above of another planning scenario with real people; and

3 a three-dimensional oblique view from above of a simulated person interacting with a simulated virtual work environment.

1 shows a schematic view of a device 1 to model human motion as part of a planning scenario 3 for factory planning or factory layout planning. The planning scenario 3 , which can be set up, for example, as part of a planning workshop, has planning aids 5 and a real person interacting with them 7 on. However, it is also conceivable, instead of planning aids 5 to use an existing manufacturing cell. The planning tools 5 as well as the real person 7 can by means of a tracking system 9 be imaged, with an image 19 a real movement of the real person 7 can be determined. The tracking system 9 this can at least one imager 11 have, for example, two video cameras or infrared imagers. To the movement of the real person 7 to record better, In particular, in order to also be able to detect hidden areas, the person can 7 a body tracking device 13 exhibit. By means of the body tracking device 13 For example, a relative position, an absolute position and / or an angular position of a body joint of the real person 7 be determinable. In addition, the planning tools 5 as well as the real person 7 marks 15 also by means of the imagers 11 can be detected, for example, to conclusions about corresponding positions of the planning tools 5 or the real person 7 to enable. The device 1 has a central unit 17 , in particular designed for storing, processing and / or calculating the image 19 the movement of the person 7 on. The central unit 17 can decay into other subunits, for example parts of the tracking system 9 exhibit. The central unit 17 has a modeling unit 21 on, by means of the image 19 into a motion simulation model is feasible. By means of the central unit 17 can the determined image 19 both temporally, for example by means of a time clock, as well as spatially, for example by means of coordinates, resolved and / or synchronized. Data of the different donors 11 . 13 can to the image 21 be merged. To transfer the image 21 In the motion simulation model, the modeling unit, at least one motion simulation function or a variety of motion simulation functions on the temporally and / or spatially resolved image 19 correlate or parameterize.

Advantageously, the real person 7 Manipulate objects, for example, one of the planning tools 5 , wherein the manipulated object also by means of the modeling unit 21 into the motion simulation model is einrechbar.

2 shows a three-dimensional view of another real planning scenario 3 , provided with planning aids 5 , The planning scenario 3 represents a later manufacturing cell 23 of a planned factory layout. There are several planning aids for this purpose 5 , each one of the markers 15 in the later dimensions of the planned manufacturing cell 23 within the planning scenario 3 arranged. Between the planning tools 5 can one or more of the persons 7 move as they do in the later finished manufacturing cell 23 would do. Advantageously, this movement sequence by means of the device 1 and the modeling unit 21 be converted into a corresponding motion simulation model.

3 shows a virtual person 25 interacting with a virtual work environment 27 , It is possible to simulate virtual person movements 25 based on the modeling unit 21 parameterized motion simulation model for further planning of the virtual work environment 27 to use. Advantageously, previously simulated movements of the virtual person can be observed, the virtual work environment being addressed to the virtual person 25 is optimally adaptable.

Human motion sequences are recorded in real time. Human models with kinematic information can be used for various tools of a so-called digital factory, for example a human simulation or ergonomic examinations in a system known or known under this name by eM-Human. Advantageously, these models by means of the device 1 or by means of the modeling unit 21 the device 1 without much manual effort, such as an otherwise necessary manual programming for individual movements for different body axes and limbs, adapted or parameterized. In the context of a process planning, real test procedures or sequences of movements can take place in which the real persons execute or go through real work steps. The recording or the determination of the image 19 the movements of real people 7 during the real test procedures allows the automatic creation of the human motion simulation model by means of the device 1 , where at a later planning time advantageously more authentic virtual movements are simulated, as was possible with previous manually created models.

The motion simulation models generated in this way allow exact modeling for specific target groups, analysis of workspaces and range for workplace design, time analyzes based on the MTM 1 method, ergonomics analyzes, such as lifting, posture and energy use, authentic kinematics and generation of documentation, such as ergonomics reports and animated work instructions. For example, walking paths are advantageous by means of the tracking system 9 , for example, optically recorded. If necessary, the corresponding markings can be used 15 at the real persons 7 be attached. The tracking system 9 can use both infrared and video-based imagers 11 exhibit. Due to visual obscurations, movements of individual limbs of persons 7 not be recorded optically. Advantageously, an additional mechanical body tracking system, for example the body tracking device, can be used 13 , to be used for recording. The recorded coordinates and orientations of the considered points can be synchronized over a cycle time and into the movement si be transferred.

1

contraption

3

planning scenario

5

planning tools

7

real person

9

Tracking system

11

imager

13

Body tracking device

15

marks

17

central processing unit

19

image

21

modeling unit

23

manufacturing cell

25

virtual person

27

virtual work environment

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 10240338 A1 [0002]
• - DE 102004051600 B4 [0007]
• DE 102005058240 A1 [0007]

Claims (11)

Factory planning procedure using a device ( 1 ) for modeling human movement sequences, comprising the following steps: - performing a real human movement sequence, - determining an image ( 19 ) of the real human movement, - transfer of the image ( 19 ) into a motion simulation model. Method according to claim 1, comprising the following step: - performing the real human movement sequence by means of a real person ( 7 ) in a real work environment. Method according to claim 2, comprising the following step: - performing the real human movement sequence in a planning aid ( 5 ) planning scenario ( 3 ) of the work environment. Method according to one of the preceding claims, with the following step: determining the image of the real human movement sequence by means of a tracking system ( 9 ). Method according to the preceding claim, wherein the tracking system ( 9 ) has at least one of the following features: - at least one imager ( 11 ), - on the real person ( 7 ) and / or planning aids ( 5 ) attachable markings ( 15 ), - one of the real person ( 7 ) assignable mechanical body tracking device ( 13 ). Method according to one of the preceding claims, with the following step: - temporal dissolution the image of the real human movement by means of a Time clock. Method according to one of the preceding claims, comprising the following step: - spatially resolving the image ( 19 ) of the real human movement through coordinates. Method according to one of the preceding two claims, with the following step: - Correlate and / or parameterize of at least one motion simulation function of the motion simulation model on the temporal and / or spatial resolution. Method according to one of the preceding claims, with the following step: - manipulating objects the working environment during the real human movement. Contraption ( 1 ) for modeling human motion sequences and for processing EDP data, software-adapted and / or designed to carry out a method according to one of the preceding claims. Device according to the preceding claim, wherein the device ( 1 ) a tracking system ( 9 ) having.