Movement-dependent stabilization support system

Abstract

The present invention relates to a movement-dependent stabilisation support system (100) for stabilising a moving body (200), which comprises a plurality of sensors (110), a plurality of actuators (120) and a control unit (130). The plurality of sensors (110) continuously detects movement parameters of the body (200), on which basis the control unit (130) determines whether there is an instability of the body (200). If it is determined that there is an instability, the control unit (130) selects a stabilisation strategy, according to which the actuators (120) are controlled. When controlled, the actuators (120) attached to the body (200) stiffen and limit the freedom of movement of the body (200), such that a movement in the direction of the imminent unstable state is prevented or suppressed. In this way, the body (200) is supported in its stabilisation and an imminent fall is prevented.

Claims

1. A movement-dependent stabilization support system for maintaining the stability of a moving body, comprising: a plurality of sensors, designed to detect movement parameters of the body; a plurality of actuators; and a control unit, designed: to define a support base utilizing contact points of feet of the body and a standing plane of the body; to detect whether an instability of the body is imminent, based on the movement parameters and a mathematical movement model including a location of a center of gravity of the body in relation to the support base, to select a stabilization strategy from a plurality of predetermined stabilization strategies when it has been detected that an instability of the body is imminent, to control the actuators according to the selected stabilization strategy, wherein the actuators are flexibly-deformable, and stiffen when controlled by the control unit, to determine positions of predetermined reference points of the mathematical movement model, on the basis of the movement parameters of the body received, and to detect the imminent instability of the body, based on trajectories of the reference points of the mathematical movement model.

2. The movement-dependent stabilization support system according to claim 1, wherein the control unit is further designed to perform a control process for terminating the actuator control for stabilization purposes, based on the movement parameters.

3. The movement-dependent stabilization support system according to claim 1 or 2, wherein the mathematical movement model is based on formalizing the movement of a simple inverted pendulum or double-inverted pendulum.

4. The movement-dependent stabilization support system according to claim 1, wherein the mathematical movement model is based on formalizing the movement of a simple inverted pendulum on an elastic spring or a double-inverted pendulum on an elastic spring.

5. The movement-dependent stabilization support system according to claim 1, wherein the mathematical movement model is an expanded mathematical movement model of the body, modelling a human body's muscular system for persons of different ages by means of a system of inverted pendulums connected to elastic springs.

6. The movement-dependent stabilization support system according to claim 1, wherein the control unit detects the imminent instability of the body by calculating future positions, based on changes between previous and current positions of the reference points of the mathematical movement model, and recognizes that an instability of the body is imminent, if the future positions satisfy at least one condition from a plurality of predetermined conditions.

7. The movement-dependent stabilization support system according to claim 1, wherein the sensors each comprise a detection unit, a storage unit, and a computing unit, wherein the detection unit is designed to detect sensor data, the storage unit is designed to store the sensor data, and the computing unit is designed to process previous and current sensor data and record a processing result as movement parameters of the body.

8. The movement-dependent stabilization support system according to claim 1, wherein the control unit, after detecting the imminent instability of the body, based on movement parameters of the body, recognizes whether or not the instability of the body persists, and controls the actuators accordingly.

9. The movement-dependent stabilization support system according to claim 1, wherein the actuators have a tube-like shape and are filled with a magnetically-sensitive or electrically-sensitive medium which is stiffened, when controlled by the control unit.

10. The movement-dependent stabilization support system according to claim 1, wherein the actuators include a magnetorheological fluid that stiffens upon application of a magnetic field, and the actuators each comprise a magnetic field generator which, when controlled by the control unit, generates a magnetic field for stiffening the magnetorheological fluid.

11. The movement-dependent stabilization support system according to claim 1, wherein the sensors are inertial measuring units which detect accelerations or rotation rates as movement parameters of the body.

12. The movement-dependent stabilization support system according to claim 1, wherein the moving body is a person or a humanoid robot.

13. The movement-dependent stabilization support system according to claim 12, wherein the plurality of sensors is designed to be attached to at least hips, shoulders, hands, and head of the person or humanoid robot.

14. The movement-dependent stabilization support system according to claim 12 or 13, wherein the plurality of actuators is designed to be attached in the region of joints and/or the torso of the person or humanoid robot, in order to restrict the freedom of movement of the joints and/or of the torso by stiffening, when controlled by the control unit.

15. The movement-dependent stabilization support system according to claim 1, further comprising a plurality of second actuators, designed to perform an active movement, when controlled by the control unit, wherein the control unit is further designed to control the second actuators according to the selected stabilization strategy.

16. The movement-dependent stabilization support system according to claim 1, wherein the detecting of the imminent instability is in part based on a distance range between the center of gravity and the support base of 5-35 cm.

17. The movement-dependent stabilization support system according to claim 6, wherein the at least one condition from the plurality of predetermined conditions is a distance range of the reference point relative to a corresponding rest position, the reference point and the distance range being selected from the group consisting of the center of gravity between 10-40 cm, a left hip between 10-15 cm, a right hip between 15-15 cm, a right shoulder between 10-60 cm, a left shoulder between 10-60 cm, and a distance between the center of gravity and the support base of 5-35 cm.

18. The movement-dependent stabilization support system according to claim 1, wherein the trajectories of the mathematical movement model are based on formalizing the movement of a double-inverted pendulum on an elastic spring based on an equation of
ÿ.sub.s−m.sub.1l.sub.1{dot over (θ)}.sup.2 cos θ+m.sub.2ÿ.sub.s−m.sub.2l.sub.1{umlaut over (θ)} sin θ−m.sub.2l.sub.1{dot over (θ)} cos θ−m.sub.2l.sub.2{umlaut over (Ø)} sin Ø−m.sub.2l.sub.2{dot over (Ø)} cos Ø+m.sub.1g+m.sub.2g+k(y.sub.s−i.sub.0)=0 where m.sub.1 is a mass of a first pendulum, m.sub.2 is a mass of a second pendulum, l.sub.1 is a length of the first pendulum, l.sub.2 is a length of the second pendulum, θ is an angle between a first vertical plane and the length of the first pendulum, Ø is an angle between a second vertical plane and the length of the second pendulum, y is a spring deflection, k is a spring stiffness and g is a direction of gravitational acceleration.

19. A movement-dependent stabilization support method for maintaining stability of a moving body, the method comprising the steps of: providing a movement-dependent stabilization support system comprising: a plurality of sensors; a plurality of actuators; and a control unit; detecting movement parameters of the body utilizing the sensors; defining by the control unit a support base utilizing contact points of feet of the body and a standing plane of the body; recognizing by the control unit whether an instability of the body is imminent, based on the movement parameters and a mathematical movement model including a location of a center of gravity of the body in relation to the support base; determining by the control unit positions of predetermined reference points of the mathematical movement model, on the basis of the movement parameters of the body received; detecting by the control unit an imminent instability of the body, based on trajectories of the reference points of the mathematical movement model; selecting by the control unit a stabilization strategy from a plurality of predetermined stabilization strategies, when it has been detected that instability of the body is imminent; and stiffening the actuators according to the selected stabilization strategy.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows a schematic block diagram of the components of the movement-dependent stabilisation support system.

(2) FIG. 2 shows the position of the actuators in one embodiment of the movement-dependent stabilisation support system on a human wearer.

(3) FIG. 3 shows the position of the sensors and the control unit in one embodiment of the movement-dependent stabilisation support system on a human wearer.

(4) FIGS. 4A to 4D show examples of biomechanical movement models, on the basis of which the future stability of a wearer of the stabilisation support system can be determined.

(5) FIGS. 5A to 5C show, by way of example, the position of the centre of gravity in a wearer of the stabilisation support system and its vertical position in relation to the standing plane of the body.

(6) FIG. 6A shows, by way of example, the position of the vertical projection of the centre of gravity onto the standing plane of the body and its relative position with respect to the support base in the case of a stable position of the body.

(7) FIG. 6B shows, by way of example, the position of the vertical projection of the centre of gravity onto the standing plane of the body and its relative position with respect to the support base in the case of an unstable position of the body.

(8) FIGS. 7A to 7E show, by way of example, the position of the support base for different positions of the feet of a human wearer of the system when standing and when in motion.

(9) FIG. 8 shows, by way of example, the formalisation of a movement as a trajectory of a double-inverted pendulum on an elastic spring.

(10) FIG. 9 shows a flow chart of a method for stabilisation support of a moving body.

(11) FIG. 10 shows a schematic block diagram of a sensor (MEM-SSC) which forwards to the control unit pre-processed sensor data as movement parameters.

(12) FIG. 11 shows, by way of example, an embodiment of the stabilisation support system, which additionally comprises second actuators which perform an active movement.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

(13) In the following, a preferred embodiment of the present invention will be described in detail with reference to the drawings.

(14) FIG. 1 shows a block diagram of the movement-dependent stabilisation system 100 according to a preferred embodiment.

(15) The movement-dependent stabilisation system 100 (also referred to below as a stabilisation system 100 or system 100) comprises a plurality of sensors 110a-110c which detect movement parameters of the body 200. Furthermore, the system comprises a plurality of actuators 120a-120c and a control unit 130. In addition, the system includes a power supply, such as a battery, an accumulator, a wireless power supply system, or another power supply source for powering the individual components, and a storage unit, such as a RAM, a ROM, or a hard disk drive, which can be accessed by the control unit 130.

(16) FIGS. 2 and 3 show the position of the sensors 110 and actuators 120 of the stabilisation system 100 on a human wearer (a person) as a movable body 200. The actuators 120 are fitted in the regions of the joints of the person 200, as well as in the region of the torso on the front side, on the rear side (the back) and laterally. Furthermore, an actuator 120 is fastened in the region of the neck of the person.

(17) The sensors 110 are located on the upper side of the head, in the region of the neck and near the centre of the body and the joints in the region of the shoulders, the elbows, the wrists, the hips, the knees and the ankles.

(18) The present invention is not limited to the described position of the actuators 120. The actuators 120 may, for example, be attached only in the region of the legs and the hips. Furthermore, a plurality of actuators 120 can be located in the region of the back, in particular in the region of the spinal column.

(19) Furthermore, the present invention is not limited to the described position of the sensors 110. These can be attached, for example, in the middle of parts of the extremities, instead of in the region of the joints of the person 200. Thus, one sensor each might be fitted in the region of the palm, in the region of the lower and upper arms and in the region of the lower legs and thighs.

(20) Furthermore, the stabilisation system 100 comprises the control unit 130, which, as can be seen from FIG. 3, is attached in the region of the chest of the person 200. However, the present invention is not limited to this position of the control unit. Rather, it may be attached anywhere on the body 200. Alternatively, it is possible that it is not directly attached to the person, but, for example, can be carried in a backpack or be injected onto an integrated circuit (chip).

(21) The stabilisation system further comprises a power or energy supply system, such as a battery, together with power supply lines, and communication lines for signal transmission between the individual components of system 100.

(22) The present invention is not limited to a central power supply system. Instead, each individual component may include an appropriate power supply.

(23) This can be realised, for example, as a common transmission line between the individual components of the stabilisation system 100 in the form of a BUS-line. However, the present invention is not restricted to data transmission in a BUS-system, instead, the data transmission between the individual components can take place in any desired manner. Wireless data transmission between the components, for example, via a local wireless network (WLAN) or via Bluetooth® connections, is also possible.

(24) The system 100 may be embedded in a support structure that may be attached to the person 200. Alternatively, the components may be integrated into textiles worn by the person 200. The present invention is not restricted to a specific support system or method of attaching the individual components, provided the sensors are able to detect required movement parameters and the actuators restrict the freedom of movement of the person 200 during stiffening.

(25) The sensors 110 detect movement parameters of the body 200 and pass them on to the control unit 130. The movement parameters may be, for example, acceleration values, speed values or rotation rates, depending on the specificity of the individual sensors 110a-110c. In this case, the movement parameters are transmitted at predefined regular intervals, for example every 0.1, 0.2, 0.5 or 1 seconds.

(26) However, the present invention is not limited to a specific transmission/detection rate. Instead, the movement parameters can be transmitted to the control unit 130 at any regular or even irregular times.

(27) The control unit further comprises a memory unit which stores the movement parameters as received.

(28) On the basis of the movement parameters received or the changes in the movement data, the control unit 130 determines the positions of reference points of a biomechanical movement model.

(29) FIGS. 4A to 4B show, by way of example, four biomechanical movement models of different complexity.

(30) By way of example, FIG. 4A illustrates a biomechanical movement model based on a simple inverted pendulum. The position of the biomechanical movement model is clearly defined by the angular deflection 8 from the equilibrium position. The parameters l1 and m1, which denote the length and the mass of the pendulum, are predefined and can be configured, for example, as part of the initialisation of system 100.

(31) FIG. 4B shows, by way of example, a biomechanical movement model, based on double-inverted pendulums. The position of this biomechanical movement model is defined by the angular deflection 8 of the first inverted pendulum and the angular deflection ϕ of the second inverted pendulum. The parameters l1, m1, l2 and m2, which denote the length of the first pendulum, the first mass, the length of the second pendulum and the second mass, are predetermined and can be configured, like in the case of the simple inverted pendulum, as part of the initialisation of system 100.

(32) The examples of biomechanical movement models, shown in FIGS. 4C and 4D, correspond to the models shown in FIGS. 4A and 4B, the models additionally including an elastic spring on which the pendulums are mounted. The spring deflection ys and the spring stiffness k of the spring are thus added as further parameters of the position of the movement models.

(33) As already described, the parameters of the biomechanical movement model defining the characteristics of the model, may be configured as part of the initialisation of system 100. In this case, the properties of the body 200 to be stabilised by the system 100, can be taken into account, such that the model can optimally represent the movement of the person (of the body) 200.

(34) For example, the properties of the person 200, on the basis of which the model parameters are initialised, can include body size, length of the extremities, age and weight. However, the present invention is not limited to these properties. In particular, a standard configuration can be specified which does not take into account the individual geometric properties of the body. On the other hand, for example, detailed weight distribution and/or the geometry of the person 200 may serve as a basis for initialising the model parameters.

(35) The biomechanical movement models shown in FIGS. 4A to 4D are limited to two dimensions (x,y), with y denoting a forward direction of the body 200 and y denoting a vertical axis of the body 200. However, the present invention is not limited to a model in two dimensions, and an upgrade of the biomechanical movement models to three dimensions is possible, which additionally takes into account a deflection perpendicular to the illustrated directions, i.e, into or from the drawing plane. In order to describe the position of the movement models, additional angular deflection coordinates are required which map the deflection of the individual pendulums into the drawing plane. Since an expansion to three dimensions does not change the basic principle of the present invention, but by virtue of the higher degree of complexity allows for a more precise/extended description of the position of the body 200, a pictorial representation was dispensed with here.

(36) Furthermore, the present invention is not limited to the movement models shown in FIGS. 4A to 4D. Rather, by adding further pendulums, the position, for example, of the arms, of both legs and/or of the head can be taken into account. Furthermore, the biomechanical movement model can include a further inverted double pendulum, which is coupled to the illustrated model via a further spring with associated spring stiffness.

(37) On the basis of the movement parameters which are detected by the sensors 110 and forwarded to the control unit 130, the control unit 130 first determines the coordinates for describing the position of the biomechanical movement model. Furthermore, on the basis of the movement parameters and the position of the biomechanical movement model, the control unit determines the position of reference points, in particular the position of the head, the hands, the body centre of gravity and/or the feet of the person 200. The control unit 120 [sic] further detects the position of the vertical projections of the reference points onto the standing plane of the body.

(38) FIGS. 5A to 5C show, by way of example, the vertical projection of the centre of gravity CM of the body onto the standing plane of the person 200. FIGS. 5A and 5B show the person 200 while standing in different body positions and the corresponding vertical projection directions show the body's centre of gravity CM. FIG. 5C illustrates the position of the body's centre CM of a person 200 in motion as compared to the standing position. The direction of movement is indicated by a horizontal arrow.

(39) FIGS. 6A and 6B show schematic positions of biomechanical movement models, which respectively represent the two legs (a, b) and the upper body (c) of a person 200. The vertical projection of the body's centre of gravity CM onto the standing plane is indicated by an arrow. The positions of the feet define the support base which is defined by a surface between the contact points of the feet and the standing plane of the body 200.

(40) In FIG. 6A, the projection of the body's centre of gravity CM is located within the support base. Such a position of the movement model in FIG. 6A can be regarded as “stable”. In contrast, the projection of the body's centre of gravity of the movement model in FIG. 6B is outside the support base, so that the position of the movement model can be regarded as “unstable”.

(41) To illustrate the definition of the support base, FIGS. 7A to 7C show the contact surfaces of the feet of a person 200 with the standing surface and the support base defined thereby as a surface between and including the contact surfaces of the feet for a person 200 in the standing position. The support base is characterised by a dashed line. FIGS. 7A and 7B show a two-legged standing position, whereas FIG. 7C represents a one-legged standing position.

(42) FIGS. 7D and 7E each show a support base for a person 200 in motion. Due to the movement of the person 200, the support base is extended forward in comparison with the standing position.

(43) The control unit 130 determines the positions of reference points of the person 200 and the corresponding position of the biomechanical movement model on the basis of the movement parameters at specific points in time. The times can be defined, for example, by a temporally-equidistant grid. This means that the determination of the positions of the reference points and the position of the movement model is detected in specific time steps. By way of the preceding movement parameters, reference positions and the position of the movement model, for example at a time ti−1 and at the current point in time ti, the position of the movement model at a future point in time ti+1 is determined on the basis of the movement model.

(44) This is done on the basis of formalising the movement of the movement model, as shown, by way of example, in FIG. 8. FIG. 8 shows the formalisation of a movement model of a double-inverted pendulum on an elastic spring, as shown in FIG. 4D. The future position of the movement model and the corresponding reference positions of the person 200, are calculated on the basis of the mathematical model.

(45) After calculating the future position of the movement model, the control unit 130 determines whether the future position satisfies a predetermined condition. The predetermined conditions can be stored in the memory unit, for example, in the form of a database, which can be accessed by the control unit 130. The predetermined conditions define positions of the movement model or positions of the reference points of the body which are associated with an instability of the person 200 and which require the intervention of the system 100 to prevent an impending fall.

(46) For this purpose, each predetermined condition is linked to a stabilisation strategy. In that regard, a stabilisation strategy represents a specification for controlling the actuators 120, in order to prevent the person 200 from coming into the imminent unstable position. That is to say, on the basis of the determined future position of the movement model and the corresponding reference positions of the person 200, an appropriate stabilisation strategy is selected if it has been estimated that the person 200 (the body) will move into an unstable position.

(47) In this context, the stabilisation strategies define the actuators which are to be controlled and the time when they are to be controlled. In this regard, a priority control may, for example, be defined. This means that first a specific actuator 120 or a specific group of actuators is controlled, and only if it is estimated in a next time step that the future unstable position of the person 200 could not be prevented by the control of the actuators 120, will a second actuator or a second actuator group be controlled.

(48) The control unit 130 controls the actuators 120 in accordance with the selected stabilisation strategy. While the actuators 120 are controlled, i.e. during carrying out the stabilisation strategy according to the selected stabilisation strategy, the current and future position of the person 200 continues to be constantly determined and, if the imminent instability was prevented, actuator 120 control is terminated. In this case, a control process for terminating the actuator control is carried out by the control unit 130.

(49) For a stability analysis, for example, the following geometric data can be used: body size, weight of the person 200, length of the legs and of the arms, height of the body centre above the ground and its respective position, projected as a perpendicular to the standing surface, the support base, the head centre position and/or the positions of joints, such as ankles, knees, hips, shoulders, elbows or wrist joints.

(50) The following Table 1 shows, by way of example, some predetermined conditions for determining an imminent instability of the person 200.

(51) TABLE-US-00001 TABLE 1 Examples of predefined conditions for determining an imminent instability of the person 200. Position Range/cm Changes/cm Body centre 10-40 5-15 Left hip 10-15 5-10 Right hip 10-15 5-10 Right shoulder 10-60 5-20 Left shoulder 10-60 5-20 Distance between body  5-35 5-20 centre and support base . . . . . . . . .

(52) In Table 1, the reference positions of the person are listed under ‘Position’. The ‘Range’ indicates a permissible range of the reference position relative to the corresponding rest position. A value range for the ‘Range’ is set out in Table 1 (e.g. 10-40 cm for the body centre). This reflects the fact that the permissible range can be determined individually for each wearer within the specified range, for example depending on body size, weight, age or other properties of the person 200.

(53) If it is determined by the control unit 130 that a future position of a reference point, for example of the body centre, lies outside the specified range, an appropriate stabilisation strategy will be executed.

(54) The expected change in Table 1 indicates a permissible change in the position of the reference point within the permissible range. In the same way as indicated for the permissible range, a value range within which the permissible change can be set individually for the wearer of system 100, is indicated here as well. If the estimated change in the position of a reference point exceeds the expected (permissible) change, an appropriate stabilisation strategy will be selected and carried out.

(55) This means that it is not only monitored whether the future position is within the permissible range, but also whether the expected change in position exceeds a permissible change. In both cases, a stabilisation strategy is selected and the actuators 120 are controlled accordingly.

(56) Alternatively, or in addition to monitoring the positions of the reference points, the speed, acceleration, angle or rotation rate of the reference points can also be monitored. If these parameters exceed a predetermined threshold value, a stabilisation strategy is selected and executed. For example, a future instability can be detected if the acceleration measured on the back of the person 200 exceeds a value of 2 cm/s2.

(57) Furthermore, instead of or in addition to the positions of the reference points, rotation rates or angles can be monitored and linked to appropriate stabilisation strategies.

(58) The present invention is not limited to the predetermined conditions described above. Instead, further conditions may be defined, defining a permissible range of or change in a position, velocity, or acceleration of a reference point of the body 200.

(59) If the control unit 130, by using the predetermined conditions, determines that an instability of the body is imminent, an appropriate stabilisation strategy is selected and the actuators 120 are activated accordingly.

(60) Possible stabilisation strategies associated with the definitions of an imminent instability may be: support of back and neck, stiffening of the arms to reduce uncontrolled movements, or stiffening of hips, knees and ankle joints for stabilisation purposes.

(61) For example, in the event of a person 200 (head and hands outside the permissible ranges) falling over, a stabilisation strategy is selected, where arm and wrist joints are stiffened by controlling appropriate actuators, in order to prevent the arms or hands from flailing or rotating. In addition, the back is stiffened.

(62) In another example, if a person 200 moves too fast when about to sit down (detected, for example, by the speed of the hips and the angular velocity of the knee joints outside the respectively permissible range), the movement is slowed down by activating the actuators 120, which are attached to the knee joints.

(63) The present invention is, however, not limited to the described stabilisation strategies. Instead, a stabilisation strategy, which is linked to a predetermined condition, represents a control specification for controlling the actuators 120. This specification includes which actuators are controlled at what time, if the relevant condition is met.

(64) FIG. 9 schematically shows the steps of a movement-dependent stabilisation support method for maintaining the stability of a moving body 200 according to one embodiment.

(65) After start-up, system 100 is initialised in step S110. Initialisation comprises, for example, the setting of parameters of the movement model, such as, for example, pendulum lengths, masses and spring stiffness. Furthermore, the initialisation may include setting sensor positions on the body 200. The parameters can in this context also be predetermined and stored on a memory unit.

(66) In step S120, the movement parameters are detected by the sensors 110 and passed on to the control unit 130. In step S130, the positions of the biomechanical movement model are determined by the control unit 130 on the basis of the movement parameters, and are temporally extrapolated in step S140, in order to be able to assess an imminent instability of the body.

(67) For this purpose, it is checked in step S150 whether the future positions satisfy predetermined conditions as defined, for example, in Table 1. If one or more conditions is/are met (‘yes’ in step S150), an appropriate stabilisation strategy is selected in step S160 and is implemented in step S170 by controlling corresponding actuators 120.

(68) Detection of movement parameters and identification of an imminent instability is in this context performed continuously, so that, after/during actuator control, movement parameters continue to be detected and evaluated.

(69) If the temporally extrapolated positions do not satisfy any of the predetermined conditions (‘no’ in step S150), actuator control is terminated in step S180. Termination of the control is only carried out if the actuators 120 are controlled at the time of estimation of the imminent instability in step S150.

(70) In step S190, it is checked whether the stabilisation support is to be terminated. This can be done, for example, by way of an input by the wearer of system 100. If the stabilisation support is not to be terminated (‘no’ in step S190), further detection and evaluation of movement parameters takes place. In the event that stabilisation is to be terminated (‘yes’ in S190), the process for stabilising support is terminated accordingly.

(71) In a first modification of the above-described embodiment, at least one of the sensors 110 contains a detection unit 111, a memory unit 112 and a computing unit 113, as shown in FIG. 10.

(72) The detection unit 111 is designed to detect sensor data which, as set out below, are stored by the memory unit 112. The computing unit 113 processes previous and current sensor data and forwards a processing result to the control unit 130 as movement parameters of the body.

(73) As a result, a portion of data processing is performed by the sensors 120 themselves, instead of by the control unit 130. For example, instead of sensor data, such as an acceleration or a rotation rate, the change in acceleration or the rate of rotation can be detected as movement parameters and transmitted to the control unit 130.

(74) In addition, the memory unit 112 may also include one or more predetermined conditions which are accessed by the computing unit 113 in order to determine already whether a movement parameter satisfies one of the conditions, such that the control unit 130 must control the corresponding actuators 120 to prevent imminent instability. For this reason, such sensors are also referred to as MEM SSC (memory stability management and control).

(75) According to a second modification of the described embodiment, the system 100 comprises, in addition to the plurality of sensors 110, the plurality of actuators 120 and the control unit 130, a plurality of second actuators 140, which are also referred to as active actuators 140.

(76) FIG. 11, by way of example, shows such a modified embodiment of the stabilisation support system 100, which additionally comprises second actuators 140, which perform an active movement.

(77) The active actuators 140 are in this case attached in the area of the neck, the back, the hips, the knees, the shoulders and the elbows and the foot and wrist joints of the person 200.

(78) In the second modification of the stabilisation system 100, the stabilisation strategies further include control specifications for controlling the second actuators 140, in addition to the control of the actuators 120 which can be stiffened. This makes it possible to limit not only the freedom of movement of the person 200, but moreover to actively influence the movement of the person 200, and thus to again stabilise a body which is already in the process of falling.

(79) The second actuators may be provided, for example, as hydraulic or pneumatic cylinders, piezoelectric drives or conventional electromagnetic drives.

(80) According to a further modification, not only movement parameters, which are detected by corresponding sensors, are used to estimate the future stability of the body, but also other parameters and/or measured values. The totality of the parameters, used to assess the future instability of the body 200, can be referred to as influencing parameters or environmental parameters which influence a movement.

(81) Environmental parameters which influence a movement are, for example, the surface conditions, such as the slip resistance of the surface, for example, in the case of icy grounds or slippery surfaces. Furthermore, the surface conditions can be taken into account. In this case a distinction can be made, for example, between flat and uneven, hard, stony or soft.

(82) Said surface conditions can be defined as an additional parameter in the predetermined conditions. For example, the permissible ranges, velocities, or accelerations may be reduced on a slippery ground. The inclination of the ground can also be taken into account, so that, for example, permissible angles of the movement model in relation to the perpendicular are reduced or increased according to the inclination of the ground.

(83) In addition, the system can take into account sounds, having regard to both, the selection of the stabilisation strategy and the specificity thereof. For this purpose, the system 100 can additionally be equipped with a microphone which detects sounds and forwards these to the control unit 130. The control unit processes the detected sound signal and selects an appropriate stabilisation strategy. For example, the clicking of joints or the intensity of a breathing sound of the wearer of system 100 may indicate his/her/its current physical capacity which is taken into account when selecting the stabilisation strategy.

(84) In addition, the system may be equipped with further sensors, the measured values of which allow to infer an emotional state of the wearer. For example, sensors for measuring skin resistance, pulse, blood pressure and/or sounds are suitable for this purpose. The control unit 130 can determine an emotional state of the wearer on the basis of the detected measured values, and assess the future stability situation, taking into account the detected emotional state. For example, the predetermined conditions may include the detected emotional state as an additional parameter, so that, for example, in conditions of agitation, the wearer is afforded a greater freedom of movement, which, for example, in the case of a calm emotional state, would result in an assessed instability.

(85) In particular, the predetermined conditions for defining an imminent unstable situation of the body, the biomechanical movement model and the stabilisation strategies can be defined/initialised by taking into account individual parameters. In that regard, for example, parameters such as gender, physical condition, age, known physical movement restrictions (e.g. caused by pain) or currently taken medication, may be taken into consideration.

(86) During the process of stabilisation, the body is thus subjected to the evaluation of two types of influencing parameters. On the one hand, the evaluation is based on data received from various sensors and other signal transmitters in real time, and, on the other hand, is based on the evaluation of existing profile data.

(87) All influencing parameters may play a different role individually, in groups or in sum with regard to the predetermined conditions and corresponding stabilisation strategies.

(88) The overall concept of the present invention can thus be described as an adaptive safety cage, where an imminent fall of the movable body is prevented by targeted interventions through the control of the actuators 120, in that the freedom of movement of the body is restricted in such a way that further movement towards the imminent unstable state is prevented or inhibited.

(89) In this case, the actuator technology may be designed in two stages. Thus, joints and the back region can be provided with overlapping structures having separately-controllable chambers of magneto-fluidic stabilisers in order to carry out a situation-dependent passive stabilisation by way of precise situational stiffening. A second stage makes it possible to counteract a fall and to straighten the body if stabilisation by stiffening is not sufficient, for example by using hydraulic or pneumatic cylinders, piezoelectric drives or conventional electromagnetic drives.

(90) For supplying power to system 100, for example a power supply system, such as a battery system, may be used, which is distributed within the system 100. The distribution of the energy storage means increases comfort and improves the passive stability compared to a central energy supply system.

(91) The system 100 may further comprise a programming interface (API) via which current data for describing the instability can be transmitted, so that they are used for later optimisation of the personalised parameters. In particular, the effect of a performed stabilisation can be determined and stored, in order then to be able to be transmitted to an external device via the API which optimises the predetermined conditions and the corresponding stabilisation strategies. The movement-dependent stabilisation support system 100 can be embedded in a smart textile product.

(92) In summary, the present invention relates to a movement-dependent stabilisation support system for stabilising a moving body which comprises a plurality of sensors and actuators and a control unit. The plurality of sensors continuously detects movement parameters of the body, on the basis of which the control unit determines whether an instability of the body is imminent. If it is determined that an instability is imminent, the control unit selects a stabilisation strategy according to which the actuators are controlled. When controlled, the actuators attached to the body stiffen and limit the freedom of movement of the body, so that a movement in the direction of the imminent unstable state is prevented or suppressed. In this way, the body is supported in its stabilisation and an imminent fall is prevented.