EP1616600A1 - Sensor means for movement detection and feedback arrangement - Google Patents

Abstract

The user (2) of the arrangement (10) could be a ski-jumper with sensor elements (6) attached to each of the boards (4) assessing the speed (22), their angles and their position (24) in relation to each other. The obtained data are transmitted to an evaluation device (12) connected to the body of the user (2) in order to be compared with reference data. The data obtained during this process are transmitted to a second, external unit (14) using Bluetooth (RTM) technology and creating an instant feedback (16).

Description

The present invention relates to a detection system for motion sequences and / or the position of an object, a detection method for motion sequences and / or the position of an object and a corresponding computer program product.

Detection systems, in particular to detect positions and movements of objects, are known from the prior art. By such systems movements can be measured and reproduced, for example by a video analysis. For this purpose, in particular high-performance cameras are used, after the development of the film or the preparation of the data, the user can view the motion and evaluate.

A disadvantage of these systems is that they are very expensive and expensive to manufacture and use. In addition, it is not possible to pass on direct feedback during the movement of the user to this.

It is therefore an object of the present invention to provide a detection system and a detection method for motion sequences and / or the position of an object, by means of which a direct feedback to the user is possible, the resolution, i. the accuracy is improved and additional parameters can be measured.

This task is performed by a motion detection system and / or the position of an object Claim 1, a detection method for motion sequences and / or the position of an object according to claim 12 and solved a computer program product according to claim 15. Preferred embodiments are subject of the dependent subclaims.

• zumindest einen am Objekt angeordneten Sensor zur Erfassung der Bewegung und/oder der Position eines Objekts,
• zumindest eine Feedbackeinrichtung, welche am Objekt oder diesem benachbart angeordnet ist, und
• zumindest eine Auswerteeinrichtung, welche mit dem Sensor und der Feedbackeinrichtung in Signalverbindung steht, wobei die Auswerteeinrichtung einen Komparator umfaßt, welcher zum Vergleich von vom Sensor ermittelten Daten mit vorbestimmten oder vorbestimmbaren Daten ausgelegt ist, welche in der Auswerteeinrichtung vorgesehen sind, und wobei die Feedbackeinrichtung ausgelegt ist, zeitnah bzw. zeitlich unmittelbar in Abhängigkeit des Vergleichsergebnisses des Komparators eine Reaktion auszuüben.

According to the invention, a detection system for motion sequences and / or the position of an object is provided, comprising

• at least one sensor arranged on the object for detecting the movement and / or the position of an object,
• at least one feedback device, which is arranged on or adjacent to the object, and
• at least one evaluation device, which is in signal communication with the sensor and the feedback device, wherein the evaluation device comprises a comparator, which is designed to compare data determined by the sensor with predetermined or predeterminable data, which are provided in the evaluation, and wherein the feedback device designed is to exercise a timely or temporally directly depending on the comparison result of the comparator, a reaction.

The at least one sensor is advantageously designed in a compact design and arranged independently on the object, ie positionable independently of the position of the other elements of the detection system. Thus, it is possible to position the sensor so that movements of the object are not adversely affected. The feedback device can be arranged on the one hand on the object itself or this adjacent. In other words, it is possible to arrange the feedback device on a second object associated with the object or on a person in connection with the object, which should be the recipient of the feedback.

By signal contact or connection of the evaluation device on the one hand with the at least one sensor and the feedback device, it is possible to transmit a plurality of different data, which are processed for example in the comparator, these elements. On the one hand, this data can be single data or entire data records. In this context, individual data means those data by means of which, for example, the position of an object can be determined. The data sets, on the other hand, serve to specify a sequence of movements, i. a sequence of individual positions defined over a longer period of time.

Instead of or in addition to a movement sequence or a specific position, it is also possible to measure times or time sequences. It would also be conceivable to measure and process a distance traveled from the detected acceleration as a function of the measured time.

By means of the comparator, the data measured by the sensor can advantageously be compared with corresponding reference data and, on the basis of this comparison, corresponding results can be output via suitable arithmetic operations. The results can be output to the feedback device in the form of difference values between the reference value and the read-in value, for example. This is advantageously carried out in a timely manner or in temporally immediate dependence on the calculation of the comparison result or on the acquisition of the data by the at least one sensor. In this case, a reaction within a few seconds, preferably less than 10 seconds, particularly preferably less than 1 second and very particularly preferably less than 50 milliseconds, means directly or temporally directly. Thus, it is possible by the timely reaction exercise, during the movement of the object to give this or a person a feedback. Advantageously, a system is created which operates autonomously, ie independently, from external devices and which is capable of giving the user prompt feedback or, in particular, real-time feedback.

Preferably, the sensor is designed to measure the acceleration and / or the rotation rate, preferably in each case in three axes or axial directions. The three axial directions are advantageously arranged so that they span the three-dimensional space. Preferably, the axial directions are perpendicular to each other. Particularly suitable for this purpose is a so-called micromechanical "low-g" semiconductor acceleration sensor which has a resolution of a few milli-g. Such sensors may have a resolution of less than one degree per second. In addition or as an alternative to acceleration, the rotation rate can also be measured by a sensor. Thus, it is also possible to measure the rotational speed and / or acceleration by one or more axes. Consequently, it is possible to also detect a "tumbling" of the object advantageously by means of such a device.

In a preferred embodiment, the sensor and / or the feedback device and the evaluation device have radio transmission means. Thus, it is possible to make the signal transmission between the sensor and / or feedback device and evaluation wirelessly. Such a wireless transmission can be done for example by means of "Bluetooth" or other standardized or proprietary methods.

However, it is additionally or alternatively also possible to design the signal connection via the object itself. Conceivable For example, this would be a signal connection via garments of a person representing the object. Such garments, which have electrical signal connections are known in the field of so-called "wearable electronics". A transfer could be effected by incorporating conductive warp and weft yarns capable of transferring electronic data into the textile fabric.

Advantageously, the signal connection is designed as a secure connection. In other words, the connection may be designed so that manipulation from the outside is not possible. This could be done by the signal on the one hand encrypted or coded and on the other hand provided with a signature, so that the signal receiver receives information about the signal transmitter. Thus, it is not possible to manipulate or intercept the signals and replace them with other signals. By a corresponding coding, it is also not possible that the data can be analyzed and changed by external bodies.

Furthermore, the sensor and / or the evaluation device preferably have a time recording device. Time recording device is not to be understood here in particular as a "stopwatch" but as a signal generator which emits time signals to the corresponding devices. Thus, depending on the time signals and an acceleration measured by the acceleration sensor, the distance traveled, the speed and the course of the speed over the distance of the object can be calculated.

Particularly preferably, the feedback device has optical and / or acoustic output means to exercise the reaction. Such optical and / or acoustic output means may be, for example, a speaker or headphones or a display or light emitting diodes. However, it is also conceivable to exert a force on the object or a body adjacent to the object instead of an optical or acoustic signaling.

Further advantageously, the detection system has a memory device, which is preferably provided in the evaluation device, the feedback device and / or the sensor. The memory device may advantageously store the data read in by the sensor, the reference values provided in the evaluation device, and the corresponding processing data or programs. In particular, all volatile and nonvolatile electronic semiconductor memories, in particular DRAMs and flash memories, can be used as the memory device.

In a preferred embodiment, the evaluation device has a first evaluation unit and a second evaluation unit, which are in signal communication with one another. It is thus possible to carry out a preliminary analysis of the data in the first evaluation unit and to further process this pre-analyzed data in the second evaluation unit.

Preferably, the first evaluation unit is located adjacent to the object or the second evaluation unit is remote from the object. In other words, the second evaluation unit is not provided in direct or indirect physical contact with the object but arranged so that the movement or position of the object is independently possible from the second evaluation unit. The first and second evaluation unit preferably have radio transmission means for the preferably secure signal connection. Thus, the second evaluation could be arranged by means of a radio link at a central location, spaced from the object, preferably in the range of one meter to several kilometers.

• Erfassen der Bewegung und/oder der Position des Objekts mittels zumindest eines am Objekt angeordneten Sensors;
• Auswerten der vom Sensor ermittelten Daten in einer Auswerteeinrichtung, indem die vom Sensor ermittelten Daten mit vorbestimmten oder vorbestimmbaren Daten durch einen Komparator verglichen werden; und
• zeitnahes Ausüben einer Reaktion in Abhängigkeit des Vergleichsergebnisses des Komparators durch eine Feedbackeinrichtung.

Furthermore, according to the invention, a detection method for motion sequences and / or the position of an object is provided, comprising the steps:

• Detecting the movement and / or the position of the object by means of at least one sensor arranged on the object;
• Evaluating the data determined by the sensor in an evaluation device by comparing the data determined by the sensor with predetermined or predeterminable data by a comparator; and
• timely exerting a reaction as a function of the comparison result of the comparator by a feedback device.

Due to the immediate or immediate reaction, it is possible to give the object during its movement or its movement a feedback. Immediately in this context means "directly in time", in particular in the range of less than one minute, preferably one second and particularly preferably a few milliseconds. Such a method makes it possible to give the object, independently of external devices, feedback about its movement or its movement sequence and / or its position, so that this method runs autonomously by external devices. The data determined by the sensor are transmitted to the evaluation device, so that after evaluation of these data corresponding further processed data can be transmitted to the feedback device. This can be done for example by means of radio transmission.

• Übertragen von Daten von einer ersten Auswerteeinheit der Auswerteeinrichtung an eine zweite, ortsferne Auswerteeinheit der Auswerteeinrichtung;
• Verarbeiten der Daten in der zweiten Auswerteeinheit; und
• Übertragen der verarbeiteten Daten an die erste Auswerteeinheit. Hierdurch ist es möglich, einen Teil der Daten in der ersten Auswerteeinheit vorzuanalysieren und die voranalysierten Daten in der zweiten Auswerteeinheit weiter zu analysieren. Vorteilhafterweise ist die erste Auswerteeinheit am Objekt selber angebracht und die zweite Auswerteeinheit ortsfern angeordnet. Zur Weiterverarbeitung bzw. zum Auslösen eines Feedbacks werden die in der zweiten Auswerteeinheit verarbeiteten Daten wieder an die erste Auswerteeinheit übertragen und entsprechend weitergeleitet.

Preferably, the detection method further comprises the steps of:

• Transmitting data from a first evaluation unit of the evaluation device to a second, remote evaluation unit of the evaluation device;
• Processing the data in the second evaluation unit; and
• Transmitting the processed data to the first evaluation unit. This makes it possible to pre-analyze part of the data in the first evaluation unit and to further analyze the pre-analyzed data in the second evaluation unit. Advantageously, the first evaluation unit is attached to the object itself and the second evaluation unit is arranged remote from the location. For further processing or for triggering a feedback, the data processed in the second evaluation unit are again transmitted to the first evaluation unit and forwarded accordingly.

Furthermore, according to the invention, the use of a detection system according to the invention for detecting the movement sequence and / or the position of at least one body part of a person is provided. Such systems can be used in particular in the field of skiing, for example in ski jumping, in which the angle of inclination and the twist of the skis in flight can be measured. Also an application in martial arts, such as boxing, karate, etc. is conceivable in which power and the movement should be measured. Also in ball sports, according to the acceleration, the force and the movement can be detected. In racket sports, such a system can also be arranged or integrated into the racquet so as to have corresponding parameters, such as those of a racquet. to capture the force vector, the force gradient, movement, etc.

The present detection system may also be used in rehabilitation, eg after surgery (re-learning of motion sequences), or in the detection of postural disorders Serve, for example, uneven loads in different movements.

• Fig. 1 eine schematische Darstellung einer Ausführungsform der vorliegenden Erfindung;
• Fig. 2 ein Diagramm eines bevorzugten Sensors der vorliegenden Erfindung;
• Fig. 3 ein Diagramm einer bevorzugten ersten Auswerteeinheit der vorliegenden Erfindung;
• Fig. 4 ein Diagramm einer bevorzugten Feedbackeinrichtung der vorliegenden Erfindung; und
• Fig. 5 zeigt ein Diagramm einer bevorzugten zweiten Auswerteeinheit der vorliegenden Erfindung.

The invention will be described by way of example with reference to accompanying drawings of preferred embodiments. It shows:

• Fig. 1 is a schematic representation of an embodiment of the present invention;
• Fig. 2 is a diagram of a preferred sensor of the present invention;
• Fig. 3 is a diagram of a preferred first evaluation unit of the present invention;
• Fig. 4 is a diagram of a preferred feedback device of the present invention; and
• 5 shows a diagram of a preferred second evaluation unit of the present invention.

In Fig. 1 an example of an application of the detection system according to a preferred embodiment for training improvement in ski jumping or ski flying is shown. At the feet of a person 2 are two skis or objects 4. Arranged on the object 4, adjacent to the feet of the person 2, two sensors 6. These transmit the acceleration and rotation forces acting on the objects 4. In particular, modern micromechanical low-g semiconductor acceleration sensors can be used as acceleration and / or rotation sensors 6. These have a resolution or accuracy of a few milligrams or degrees per second. Thus, it is possible in particular to determine the angular position of the objects 4 exactly and one To obtain analysis of the forces acting on the objects 4 acceleration forces. The data obtained in the sensor 6 are passed via a signal connection 8 to an evaluation device 10.

The evaluation device 10 comprises, in particular, a first evaluation unit 12 and a second evaluation unit 14. The first evaluation unit 12 is in contact with the sensors 6 via the signal connection 8. In particular, Bluetooth can be used as transmission technology for this purpose as a wireless transmission technology. In particular, a preliminary analysis of the data determined by the sensor 6 can take place in the first evaluation unit 12. It is possible on the one hand to evaluate important information derived directly from the sensor signal. These may be, for example, the angular difference between the two objects 4, the velocity delay by externally acting resistors (e.g., drag), and the amplitude of the jarring and / or fluttering of the objects 4.

On the other hand, it is possible to compare these data with respect to statistical or predeterminable or predetermined, stored and preferably dynamically generated reference values or progressions and to output them accordingly as feedback correction values. A course of movement could thus be represented, for example, by an angle of the object changing over the distance, wherein the angle with respect to the gravitational acceleration acting towards the center of the earth can be measured. Moreover, it is possible to calculate guide values such as speed or distance covered by integration of the acceleration signal.

The comparison results or output information determined in the first evaluation unit 12 can be transmitted directly to the person 2 in real time or in real time. This can be done in particular via an on the Person 2 arranged feedback device 16 take place, which is preferably via a wireless signal connection 18 with the first evaluation unit in contact or connection. For example, it is possible to send this data by means of Bluetooth to a feedback device 16 in the form of an audio headset and to transmit information corresponding to the person 2 by means of signals. This could be done for example by a sound signal of the same frequency whose volume is variable, or additionally or alternatively by means of a change in the frequency of the sound signal.

In a preferred embodiment, the evaluation device 10 has a second (optional) evaluation unit 14. The evaluation unit 14 is remote from the person 2, i. an influence on the movement sequence and / or the position of the object 4 or the person 2 is not given by the second evaluation unit 14. The second evaluation unit 14 is in signal connection via a signal connection 20 with the first evaluation unit 12. The signal connection 20 takes place here wirelessly, in particular in this case the Bluetooth technology can be used.

The second evaluation unit 14 is used in particular for processing or acquiring further information about the movement sequence and / or the position of the object 4. For example, the second evaluation unit 14 may have a speed measuring device 22 (for example a radar or laser speedometer). Also, means for determining position 24 (e.g., light barriers) may be provided in the second evaluation unit 14. To display data, it is possible to provide a display device 26 at the second evaluation unit 14, by means of which third parties can view data accordingly.

Fig. 2 shows a schematic circuit diagram of a sensor 6. The sensor 6 has, for example, an acceleration measuring device 28. The acceleration measuring device 28 transmits data to a processor 30 which is supplied with power via a power supply 32. The processor 30 may store the data obtained from the accelerometer 28 in a memory device 34. In the memory device 34 also predetermined or predeterminable reference values can be stored, which serve as comparison values to the data obtained by the acceleration measuring device 28. Corresponding comparison results can be sent via a radio transmission device 36 to the first evaluation unit 12 via the signal connection 8.

A suitable radio transmission device 38 is likewise provided in the first evaluation unit 12 shown in FIG. The first evaluation unit 12 also has a processor 40, which is in signal communication with the radio transmission device 38 and correspondingly processes the data obtained by the radio transmission device 38. The processor 40 and / or the radio transmission device 38 and / or a storage device 42 connected to the processor 40 are supplied with energy via a power supply 44. Corresponding calculation rules or programs can be provided in the processor 40 in order to process the data obtained by the sensors 6 and to compare with stored in the memory 42 reference values. The (comparison) results determined in the processor 40 are transmitted via the radio transmission device 38 to the feedback device 16 shown in FIG. 4 .

The feedback device 16 likewise has a radio transmission device 46, which receives data from the radio transmission device 38 of the first evaluation unit 12. These data are transferred to a D / A converter, which in response to the determined results outputs a sound signal via an acoustic output means 50, for example an earphone. The elements provided in the feedback device 16 are supplied via a power supply 52.

In a preferred embodiment, the detection system has an (optional) second evaluation unit 14, which is shown in detail in FIG. 5. The second evaluation unit 14 comprises a radio transmission device 54 for forwarding data to a processor 56, which is in signal communication with a memory 58. The processor 56 may transmit data to an interface 60 for a display device 26. Also in signal communication with the processor 56 are interfaces 62, 64 for a variety of measuring devices, such as a Geschwindigkeitsmeßeinrichtung 22 or means for position determination 24. The interfaces can each be connected via various interfaces with the corresponding devices, such as an RS232 connection or via Ethernet.

Thus, it is possible to provide a detection system which operates as an autonomous system disposed on the object 4 and capable of providing feedback to a person 2 about their course of motion and / or the position of the object 4 in real time or in real time.

LIST OF REFERENCE NUMBERS

2

person

4

object

6

sensor

8th

signal connection

10

evaluation

12

first evaluation unit

14

second evaluation unit

16

Feedback facility

18, 20

signal connection

22

speed measuring

24

Means for determining position

26

display

28

accelerometer

30

processor

30, 40, 56

processor

32, 44, 52

power supply

34, 42, 58

memory device

36, 38, 46, 54

Radio transmission device

48

D / A converter

50

acoustic output device

60, 62, 64

interface

Claims (14)

1. Detection system for movement sequences and / or the position of an object (4), comprising at least one sensor (6) arranged on the object (4) for detecting the movement and / or the position of an object (4), - At least one feedback device (16) which is disposed adjacent to the object (4) or this, and at least one evaluation device (10) which is in signal connection (8, 18) with the sensor (6) and the feedback device (16),
wherein the evaluation device (10) comprises a comparator which is designed to compare data determined by the sensor (6) with predetermined or predeterminable data which are provided in the evaluation device (10), and wherein the feedback device (16) is designed, in a timely manner depending on the comparison result of the comparator exercise a reaction. 2. A detection system according to claim 1, wherein the sensor (6) is adapted to measure the acceleration and / or the rotation rate, preferably in each case in three axes. 3. detection system according to one of the preceding claims, wherein the sensor (6), the feedback device (16) and / or the evaluation device (10) radio transmission means (36, 38, 46). 4. detection system according to any one of the preceding claims, wherein the signal connection (8, 18) is formed as a secure connection. 5. detection system according to one of the preceding Claims, wherein the sensor (6) and / or the evaluation device (10) have a time detection device. A detection system according to any one of the preceding claims, wherein the feedback means (16) comprises optical and / or acoustic output means (50) for applying the reaction. 7. detection system according to one of the preceding claims, further comprising a memory device (34, 42, 58), which is preferably in the evaluation device (10), the feedback device (16) and / or the sensor (6) is provided. 8. detection system according to one of the preceding claims, wherein the evaluation device (10) comprises a first evaluation unit (12) and a second evaluation unit (14) which are in signal communication with each other (20). 9. detection system according to claim 8, wherein the first evaluation unit (12) on the object (4) or adjacent thereto and the second evaluation unit (14) is remote from the object (4). 10. A detection system according to any one of claims 8 or 9,
wherein the first and second evaluation unit (12, 14) radio transmission means (38, 54) for the preferably secured signal connection (20). 12. Motion detection method and / or the position of an object, comprising the steps of: Detecting the movement and / or the position of the object (4) by means of at least one sensor (6) arranged on the object (4); - Evaluating the data determined by the sensor (6) in an evaluation device (10) by the sensor (6) determined data are compared with predetermined or predeterminable data by a comparator; and - Timely exerting a reaction in dependence of the comparison result of the comparator by a feedback device (16). 13. A detection method according to claim 12, further comprising the steps of: - Transferring data from a first evaluation unit (12) of the evaluation device (10) to a second, remote evaluation unit (14) of the evaluation device (10); - processing the data in the second evaluation unit (14); and - Transferring the processed data to the first evaluation unit (12). 14. Use of the detection system according to one of claims 1 to 10 for detecting the movement sequence and / or the position of at least one body part of a person (2). A computer program product comprising program parts for performing a method according to any one of claims 12 or 13.

Images