Variable acceleration stimulation device

Abstract

The invention provides a variable acceleration stimulation device, and the device comprises an acceleration driver which is provided with a power part and an execution part which is connected with the power part and is used for outputting acceleration; the fixing mechanism is connected with the execution part and used for bearing a trainee; the control assembly is electrically connected with the power part; the control assembly drives the acceleration driver to execute acceleration motion in different modes by adjusting the output current and / or voltage. According to the invention, the acceleration driver outputs linear acceleration motion so as to realize simulation of gravity; the output current and / or voltage are adjusted through the control assembly to drive the acceleration driver to execute acceleration movement in different modes, so that acceleration stimulation of different durations and magnitudes is achieved for trainees, and then systems such as cardiovascular systems, skeletal muscles and bones of a body are stimulated to keep normal metabolism rates and keep a healthy state.

Description

Technical Field

[0001] The invention belongs to the field of aerospace rehabilitation, and in particular relates to a variable acceleration stimulation device. Background Art

[0002] Long-term weightlessness in space flight can lead to cardiovascular dysfunction, significant atrophy of muscles, especially anti-gravity muscles, and bone loss in load-bearing bones. These problems seriously affect the astronauts' health in orbit and their safety upon return. Although the use of treadmills, resistance training devices and other measures in orbit has achieved good protective effects, the above effects are still very obvious after living in a weightless environment for a long time. At the same time, existing weightless environment training devices have the problems of incomplete force-bearing parts and unadjustable force patterns. Summary of the invention

[0003] The purpose of the present invention is to solve the problems that the existing weightlessness environment training device has incomplete force-bearing parts and the force-bearing mode cannot be adjusted.

[0004] The purpose of the present invention is to adopt the following technical solutions to achieve:

[0005] A variable acceleration stimulation device, comprising:

[0006] An acceleration driver, comprising a power unit and an execution unit connected to the power unit for outputting acceleration;

[0007] A fixing mechanism, connected to the execution part and used for carrying the trainee;

[0008] A control component, electrically connected to the power unit;

[0009] The control component drives the acceleration driver to perform acceleration motions in different modes by adjusting the output current and / or voltage.

[0010] Preferably, the device comprises a frame for fixing the acceleration driver.

[0011] Preferably, the power unit includes a servo motor.

[0012] Preferably, the execution unit includes a synchronous belt or a linear guide rail.

[0013] Preferably, the fixing mechanism includes a platform, a box, or a combination of the two.

[0014] Preferably, the control component includes a driver connected to the power unit, a programmable control module connected to the driver, and an output component and an input component connected to the programmable control module;

[0015] The programmable control module and the driver are respectively connected to the power supply.

[0016] Preferably, the output component includes a display.

[0017] Preferably, the input component includes a keyboard, a data interface, and buttons.

[0018] Preferably, the control parameters of the control component include acceleration and time.

[0019] Preferably, the ascending deceleration of the actuator includes 0g.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention provides a variable acceleration stimulation device, the device comprising: an acceleration driver, which has a power unit and an execution unit connected to the power unit for outputting acceleration; a fixing mechanism connected to the execution unit for carrying a trainee; a control component electrically connected to the power unit; the control component drives the acceleration driver to perform different modes of acceleration motion by adjusting the output current and / or voltage. The present invention realizes the simulation of gravity by outputting linear acceleration motion through the acceleration driver; through the fixing mechanism, the acceleration is converted into a force applied to the trainee to stimulate the muscles and bones, thereby reducing or avoiding the problems of bone loss and muscle atrophy; through the control component, the output current and / or voltage is adjusted to drive the acceleration driver to perform different modes of acceleration motion, thereby realizing acceleration stimulation of different durations and sizes to the trainee, thereby stimulating the cardiovascular, skeletal muscle and bone systems of the body to maintain a normal metabolic rate and maintain a healthy state. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a variable acceleration stimulation device of the present invention;

[0023] Figure 2 This is a working flow chart of a variable acceleration stimulation device of the present invention;

[0024] Figure 3 is an acceleration curve diagram of Example 2 of the present invention;

[0025] Figure 4 is an acceleration curve diagram of Example 3 of the present invention;

[0026] Among them: 1-acceleration driver, 2-fixing mechanism, 3-control component, 4-frame, 5-box, 11-power unit, 12-executing unit, 31-display, 32-button, 33-position sensor. DETAILED DESCRIPTION

[0027] The technical solution is further described below in conjunction with the accompanying drawings and specific embodiments to help understand the content of the present invention.

[0028] Example 1

[0029] The essence of artificial gravity is a kind of acceleration. Due to the limitations of engineering costs and technical levels, and because the Coriolis force generated during its rotation can easily induce motion sickness, it is currently impossible to establish artificial gravity in space flight. Therefore, studying a device that can simulate the volume force characteristics of gravity and avoid the generation of Coriolis force will likely become an effective protective measure against the physiological effects of weightlessness. Previous inventions have used a motor to achieve reciprocating acceleration through a four-bar linkage, but the acceleration curve generated by this mechanism is a single sinusoidal curve with a single performance, and the reciprocating stroke can only be adjusted manually. In order to address the shortcomings of existing devices, the present invention proposes a variable acceleration stimulation device that can achieve automatic adjustment of acceleration characteristics, which can be used for health maintenance training in low-gravity environments, animal experimental research, and rehabilitation training model research.

[0030] like Figure 1 As shown, the present invention provides a variable acceleration stimulation device, the device comprising:

[0031] An acceleration driver 1 comprises a power unit 11 and an execution unit 12 connected to the power unit 11 for outputting acceleration;

[0032] The fixing mechanism 2 is connected to the execution part 12 and is used to carry a trainee; the trainee includes a human or an experimental animal, and the trainee in this embodiment is an experimental mouse.

[0033] The control component 3 is electrically connected to the power unit 11; in this embodiment, the power unit 11 is a servo motor.

[0034] The control component 3 drives the acceleration driver 1 to perform acceleration motions in different modes by adjusting the output current and / or voltage.

[0035] The variable acceleration stimulation device further comprises a frame 4 for fixing the acceleration driver 1 .

[0036] The execution part 12 includes a synchronous belt or a linear guide rail. In this embodiment, the execution part 12 is a synchronous belt. The control component 3 also includes a position sensor 33 located at the upper end of the execution part 12 for collecting position information.

[0037] In this embodiment, the fixing mechanism 2 is a platform fixed on the synchronous belt slider, and the box 5 for placing the experimental mice is fixed on the upper surface of the platform.

[0038] The control component 3 includes a driver connected to the power unit 11, a programmable control module connected to the driver, and an output component and an input component connected to the programmable control module; the programmable control module and the driver are respectively connected to a power source.

[0039] The output component includes a display 31 .

[0040] The input component includes a data interface (not shown) and a button 32 .

[0041] The control parameters of the control component include acceleration and time.

[0042] The working process of the variable acceleration stimulation device is as follows: Figure 2 shown.

[0043] The acceleration setting of the control component includes adjusting the rising target speed of the fixing mechanism 2, the time to reach the target speed, the falling target speed and the time to reach the target speed; compared with the traditional device, high G value acceleration and low G value deceleration are achieved, and the acceleration curve is changed from a sine curve mode to an adjustable mode. In this embodiment, the working mode of setting the rising acceleration of 2.3g, the rising deceleration of -0.3g, and the falling acceleration of 1g (gravity acceleration) is set. After setting, the acceleration curve is shown in Figure 3 , achieving a relatively constant acceleration in a short time; the horizontal axis in the acceleration curve is time, and the interval between adjacent maximum peaks of the acceleration curve shows that the time of a cycle is about 6.8 horizontal grids; the area where the acceleration is greater than 0 is about 5.7 horizontal grids: the execution unit 12 of the present invention can achieve a time proportion of positive acceleration in a cycle of 5.7 / 6.8≈91.18, while the time proportion of positive acceleration of the traditional device is generally 50%. It can be seen that the technical solution of this embodiment increases the time proportion of positive acceleration by (91.18-50) / 50=82.36%, so that the trainee's body tissue can be subjected to the effect of +Gz for more time, achieving the simulation of gravity, reducing the effect of -Gz, and being able to solve or delay the deterioration of body function caused by weightlessness in a weightless environment or microgravity environment. The Gz (the component of gravity along the head-to-toe direction of the body) usually refers to the acceleration experienced by the pilot or crew during the high-speed on-orbit flight or acceleration of the aircraft.

[0044] The present invention is used to study the effects of acceleration on the cardiovascular, skeletal and muscular systems of experimental animals, and effectively solves the shortcomings of previously reported single acceleration curve characteristics and low proportion of the time of positive acceleration. It can realize the adjustment of parameters such as acceleration size, growth rate, and reciprocating interval time, and provides an effective measure for studying the effects of different accelerations on the body.

[0045] Example 2

[0046] Mode 2 is set to the working mode of ascending acceleration 2g, ascending deceleration 0g and descending acceleration 1g (gravity acceleration). After setting, the acceleration curve is shown in Figure 4 , achieving rapid changes in acceleration.

[0047] The present invention is used to study the effects of acceleration on the cardiovascular, skeletal and muscular systems of experimental animals, effectively solving the problem of single acceleration curve characteristics reported previously, and can adjust parameters such as acceleration size, growth rate, and reciprocating interval time, providing an effective measure for studying the effects of different accelerations on the body.

[0048] According to the interval between adjacent maximum peaks of the acceleration curve, the time of one cycle is about 8 horizontal grids; the acceleration in the whole cycle is greater than 0, and the average (average per horizontal grid) acceleration is about 1g in the area of ​​about 7 horizontal grids: the execution unit 12 of the present invention can achieve a time proportion of 100% of positive acceleration in one cycle, and the area with acceleration greater than 0.8g is about 7.3 horizontal grids, accounting for 7.3 / 8≈91.25, while the time proportion of positive acceleration of the traditional device is generally 50%. It can be seen that the technical solution of this embodiment increases the time proportion of positive acceleration by (100-50) / 50=100%, and at the same time, the area with acceleration greater than 0.8g realizes a continuous platform area, which proves that the variable acceleration stimulation device of the present invention has excellent acceleration controllability and a high proportion of simulated gravity time; in this way, the trainee's body tissue can be subjected to the effect of acceleration for more time, achieving a better gravity simulation effect, and being able to solve or delay the degradation of body function caused by weightlessness in a weightless environment or a microgravity environment. Thus, the problem that the force-bearing parts of the existing weightlessness environment training device are not comprehensive and the force-bearing mode cannot be adjusted is solved.

[0049] Use Figure 3 Animal experiments were conducted using the acceleration curve model to verify the stimulating effect of acceleration on muscles.

[0050] 24 SD rats were divided into 2 groups, 12 in each group. One group was raised normally, and the other group was intervened on the device for 1 hour every day for a total of 4 weeks. After the experiment, the soleus and gastrocnemius muscles of the rats were tested to study the effect of daily acceleration intervention on the muscles. After four weeks of intervention, the muscle index of the rats in the acceleration stimulation group, especially the soleus muscle index, was significantly improved, indicating that daily acceleration stimulation can effectively exercise the hind limb muscles of rats, and has a better stimulation effect on the soleus muscle, which is mainly composed of slow muscle fibers.

[0051] Group <![CDATA[Soleus muscle weight / body weight (×10 3 )]]> <![CDATA[Gastrocnemius muscle weight / body weight (×10 3 )]]> Control group 0.366±0.045 5.078±0.376 Acceleration stimulation group 0.407±0.049* 5.234±0.491

[0052] *P<0.05 compared with the control group

[0053] The above experiments show that the variable acceleration stimulation device of the present invention can actually and effectively stimulate the metabolism of animal body tissues, can effectively simulate the load of ground gravity on the body, and can effectively replace traditional resistance-type exercise training. Although human musculoskeletal system is different from that of animals, their basic metabolism is the same, and the effects of gravity are the same. The above experiments can also prove the effectiveness of the variable acceleration stimulation device of the present invention on the human body. Compared with traditional resistance-type exercise, the variable acceleration stimulation device of the present invention also has the advantage of comprehensive stimulation of all body organs, and can effectively solve the problem that conventional exercise can only directly stimulate a single aspect of the musculoskeletal system.

[0054] The above are merely embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the scope of the claims of the present invention.

Claims

1. A variable acceleration stimulation device, characterized in that: The device comprises: An acceleration driver, comprising a power unit and an execution unit connected to the power unit for outputting acceleration; A fixing mechanism, connected to the execution part and used for carrying the trainee; A control component, electrically connected to the power unit; The control component drives the acceleration driver to perform acceleration motions in different modes by adjusting the output current and / or voltage.

2. A variable acceleration stimulation device as claimed in claim 1, characterized in that: The device comprises a frame for fixing the acceleration drive.

3. A variable acceleration stimulation device as claimed in claim 1, characterized in that: The power unit includes a servo motor.

4. A variable acceleration stimulation device as claimed in claim 1, characterized in that: The execution part includes a synchronous belt or a linear guide rail.

5. A variable acceleration stimulation device as claimed in claim 1, characterized in that: The fixing mechanism includes a platform, a box, or a combination of the two.

6. A variable acceleration stimulation device as claimed in claim 1, characterized in that: The control component includes a driver connected to the power unit, a programmable control module connected to the driver, and an output component and an input component connected to the programmable control module; The programmable control module and the driver are respectively connected to the power supply.

7. A variable acceleration stimulation device as claimed in claim 6, characterized in that: The output component includes a display.

8. A variable acceleration stimulation device as claimed in claim 6, characterized in that: The input component includes a keyboard, a data interface, and buttons.

9. A variable acceleration stimulation device as claimed in claim 1, characterized in that: The control parameters of the control component include acceleration and time.

10. A variable acceleration stimulation device as claimed in claim 1, characterized in that: The ascending deceleration of the actuator includes 0g.

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