CN117883051B - Multi-cylinder-based dynamic-static conversion balance capability testing device and testing method - Google Patents

Abstract

The invention discloses a balance capability testing device and a balance capability testing method capable of achieving dynamic and static conversion based on multiple cylinders, and relates to the technical field of medical equipment, wherein the balance capability testing device comprises a display module, an armrest module and a testing module; the test module comprises a cylinder assembly, a bottom plate, a supporting plate and a test universal joint; the cylinder assembly comprises a dynamic stiffness control cylinder and a dynamic-static conversion cylinder, wherein the dynamic stiffness control cylinder is connected with a dynamic cylinder branch, a dynamic branch control valve is connected to the dynamic stiffness control cylinder, the dynamic cylinder branch is connected with a dynamic cylinder trunk, and the dynamic cylinder trunk is connected with a dynamic air release valve; the dynamic-static conversion air cylinder is connected with a dynamic-static conversion branch circuit, the dynamic-static conversion branch circuit is connected with a dynamic-static conversion trunk circuit, and the dynamic-static conversion trunk circuit is connected with a dynamic-static conversion air release valve; the dynamic cylinder trunk and the dynamic-static conversion trunk are connected with two air outlets of a two-position three-way reversing valve, and an air inlet of the two-position three-way reversing valve is connected with an air pump. The invention can realize the accurate regulation and control of the dynamic stiffness control cylinder and the dynamic-static conversion cylinder.

Description

A balancing ability testing device and a testing method based on multiple cylinders capable of switching between dynamic and static states

Technical Field

The present invention relates to the technical field of medical devices, and in particular to a dynamic-static switchable balancing ability testing device and a testing method based on multiple cylinders.

Background technique

Balance ability refers to the ability to maintain body posture, especially the ability to control the body's center of gravity on a smaller support surface. Balance ability is the basic ability of all human static and dynamic activities. Almost any human movement is carried out in a state of maintaining body balance, which is affected by many factors, and each factor compensates and influences each other. As a basic ability of the human body, balance ability also plays a very important role in our daily life. Especially for some elderly people or people with certain diseases, measuring and understanding their balance ability in advance will help to provide early warning of certain diseases and carry out targeted training. For example, it can provide early warning of falls of the elderly, and carry out corresponding training to reduce the occurrence of falls.

The current balance ability testing equipment is mainly divided into two types: static balance and dynamic balance. Static balance testing is mostly based on plantar pressure sensors to measure a person's balance ability in static, non-disturbance conditions, and the test is not comprehensive enough. In order to increase the comprehensiveness of the test, the test subject is usually required to complete specific test movements, such as standing on one foot, squatting with eyes closed, etc., and the procedure is relatively cumbersome. In addition, because static balance testing equipment is difficult to generate movement, it is difficult to achieve improvement training for people with impaired balance ability. The detection platform of the dynamic balance testing equipment will automatically generate disturbances after the human body stands on it. The balance ability is measured by evaluating the ability of the person being tested to control the human body to reduce the amplitude of the disturbance. This type of test equipment is more comprehensive and accurate in testing balance ability. At the same time, because the dynamic balance testing equipment has the characteristics of free disturbance, it can achieve corresponding balance ability rehabilitation training through the setting of specific action curves and programs.

Dynamic balance is currently achieved through inertial sensors or plantar pressure sensors combined with corresponding mechanisms with disturbance functions. Such as Korebalance's inertial sensor plus air bag method, and the medium bag method proposed by existing patents ZL202111596258.9, CN202211475757.7 and CN202210804826.8 based on the water bag and plantar pressure sensor model. However, the air bags and water bags used in this type of equipment are relatively large in size, which easily occupies a large space, is not conducive to the layout of related components, and makes the size of the equipment larger. At the same time, due to the large volume of this type of medium bag of the equipment, it takes a long time to fill the medium and adjust the pressure, which is not convenient for operation.

In response to the above-mentioned problems, the prior art also proposed a balancing ability testing device based on multiple cylinders that can be switched between dynamic and static, see patent application number 202311020188.1. However, the lower chambers of the multiple dynamic stiffness control cylinders proposed in the patent are set to be in a connected state. This setting allows the gas in each chamber to flow between the chambers when the working surface moves, making it difficult to reset the working surface. Specifically, as shown in Figure 8 or Figure 9, if the person being tested steps on any dynamic stiffness control piston cylinder, the telescopic rod of the dynamic stiffness control piston cylinder will drop, but the telescopic rods of other dynamic stiffness control piston cylinders will extend upward, thus being out of control and unable to move according to the expected trajectory.

Therefore, there is an urgent need in the art for a balancing ability testing device and a testing method based on multiple cylinders that can be switched between static and dynamic to solve the above problems.

Summary of the invention

The purpose of the present invention is to provide a balancing ability testing device and testing method based on multiple cylinders that can be switched between static and dynamic, so as to solve the technical problems existing in the above-mentioned prior art and realize the separate control of the dynamic stiffness control cylinder and the dynamic-static conversion cylinder, so that they can run according to the expected trajectory.

To achieve the above object, the present invention provides the following solutions:

The present invention discloses a balancing ability test device based on multiple cylinders and capable of dynamic and static conversion, comprising a display module, an armrest module and a test module, wherein the display module and the test module are respectively arranged at the upper and lower ends of the armrest module, the display module and the test module are electrically connected, and the display module is used to display relevant data of the test module;

The test module comprises a cylinder assembly, a base plate, a support plate and a test universal joint, wherein the cylinder assembly is fixed to the base plate, each telescopic end of the cylinder assembly is in contact with the support plate, and both ends of the test universal joint are respectively fixed at the center of the base plate and the support plate;

The cylinder assembly includes a plurality of dynamic stiffness control cylinders and a plurality of dynamic-static conversion cylinders, the upper cavity interface of the dynamic stiffness control cylinder is used to connect to the atmosphere, the lower cavity interface of the dynamic stiffness control cylinder is connected to a dynamic cylinder branch, each of the dynamic cylinder branches is connected to a dynamic branch control valve, the dynamic branch control valve is used to control the on-off of the dynamic cylinder branch, one end of the dynamic cylinder branch away from the dynamic stiffness control cylinder is connected to a dynamic cylinder trunk, the dynamic cylinder trunk is connected to a dynamic air relief valve, and the dynamic air relief valve can be connected to the atmosphere when in an open state;

The upper cavity interface of the dynamic-static conversion cylinder is used to connect to the atmosphere, the lower cavity interface of the dynamic-static conversion cylinder is connected to a dynamic-static conversion branch, one end of the dynamic-static conversion branch away from the dynamic-static conversion cylinder is connected to a dynamic-static conversion main road, the dynamic-static conversion main road is connected to a dynamic-static conversion air release valve, and the dynamic-static conversion air release valve can be connected to the atmosphere when it is in an open state;

One end of the dynamic cylinder main circuit away from the dynamic cylinder branch circuit and one end of the dynamic-static conversion main circuit away from the dynamic-static conversion branch circuit are respectively connected to two air outlets of a two-position three-way reversing valve, and an air inlet of the two-position three-way reversing valve is connected to an air pump.

Preferably, a sensor assembly is further provided on the support plate, and the sensor assembly includes a plurality of thin film pressure sensors and/or accelerometers.

Preferably, the display module includes a display screen body, a display screen fixing rod and a display screen universal joint, one end of the display screen universal joint is fixed to the upper end of the display screen fixing rod, the other end of the display screen universal joint is connected to the display screen body, and the lower end of the display screen fixing rod is used to connect to the armrest module.

Preferably, the armrest module comprises a front armrest and two side armrests, the two side armrests are respectively fixed to two ends of the front armrest, and the front armrest is provided with a armrest rod.

Preferably, the front armrest is connected to the test module via a support rod;

Two armrest connection holes are provided on a surface of the front armrest away from the side armrests, the lower end of the display screen fixing rod and the upper end of the support rod are respectively inserted into the two armrest connection holes, and an armrest threaded hole is also provided at the bottom of the front armrest, a first fastening knob is threadedly connected to the armrest threaded hole, and the first fastening knob is also threadedly connected to the display screen fixing rod and the support rod;

The test module is provided with a connecting portion, and a test threaded hole is provided on the side wall of the connecting portion. The lower end of the support rod is sleeved on the outside of the connecting portion, and also includes a second tightening knob, which passes through the lower end of the support rod and is threadedly connected to the test threaded hole.

Preferably, a shell is provided on the outer side of the test module.

Preferably, a controller is further provided inside the shell, and a control screen is installed on the side wall of the shell, and the control screen is electrically connected to the controller.

Preferably, the telescopic end surface of the dynamic stiffness control cylinder is an arc surface structure, and the telescopic end surface of the dynamic-static conversion cylinder is a plane structure.

Preferably, the dynamic branch control valve is provided with two working positions: in working position one, the lower chamber of the dynamic stiffness control cylinder is connected to the air pump or the outside world; in working position two, the connection between the air pump or the outside world and the lower chamber of the dynamic stiffness control cylinder is cut off, and the gas is sealed in the lower chamber of the dynamic stiffness control cylinder and the pressure is maintained;

The dynamic air relief valve has two working positions: in working position one, the dynamic air relief valve is connected to the atmosphere, and the pressure in the lower chamber of the dynamic stiffness control cylinder is discharged or reduced after passing through the separate dynamic branch control valve; in working position two, the dynamic air relief valve is not connected to the outside atmosphere, and the dynamic air relief valve is used to discharge or reduce the pressure of the gas inside the lower chamber of the dynamic stiffness control cylinder to the atmosphere;

The dynamic-static conversion cylinder has two working positions: in working position one, the two-position three-way reversing valve is connected to the dynamic-static conversion main circuit, the dynamic-static conversion air relief valve is closed, the lower chamber of the dynamic-static conversion cylinder is filled with gas to the rated pressure, the upper chamber of the dynamic-static conversion cylinder is facing the atmosphere, and the piston rod of the dynamic-static conversion cylinder contacts the support plate to lift it up; in working position two, the two-position three-way reversing valve is connected to the dynamic cylinder main circuit, the dynamic-static conversion air relief valve is opened, and the upper and lower chambers of the dynamic-static conversion cylinder are both connected to the atmosphere.

The present invention also discloses a dynamic-static conversion balancing ability test method based on multiple cylinders, including three working states of the dynamic stiffness control cylinder and three common working states of the dynamic stiffness control cylinder and the dynamic-static conversion cylinder:

The dynamic stiffness control cylinder has the following three working states:

Working state 1: The gas pressure in the lower chamber of the dynamic stiffness control cylinder increases. The separate dynamic branch control valve is opened and connected to the air pump. The dynamic air release valve is closed to isolate the gas circuit from the atmosphere. At this time, the gas is filled into the lower chamber of the dynamic stiffness control cylinder, and the upper chamber of the dynamic stiffness control cylinder is connected to the atmosphere. The pressure of the filled gas is detected by a pressure gauge. When the set pressure is reached, the inflation ends.

Working state 2: The dynamic stiffness control cylinder is in the test state. At this time, the separate dynamic branch control valve is closed, the lower chamber of the dynamic stiffness control cylinder is isolated from the atmosphere and the air pump, the gas is kept inside, and the dynamic air release valve is opened, so that the dynamic air release valve is connected to the atmosphere, and the residual gas in the air pump is discharged through the dynamic air release valve;

In working state three, in order to reduce the pressure in the lower chamber of the dynamic stiffness control cylinder, the dynamic branch control valve is opened and the dynamic air relief valve is opened. At this time, the air pump stops working and the pressure in the lower chamber of the dynamic stiffness control cylinder is reduced to a specified pressure.

The dynamic stiffness control cylinder and the dynamic-static conversion cylinder have the following three working states:

Working state one, when the dynamic stiffness control cylinder is inflated, the dynamic branch control valve is opened, the dynamic air relief valve is closed, the dynamic-static conversion air relief valve is opened, and the inlet of the two-position three-way reversing valve is connected to the dynamic cylinder trunk. At this time, the lower chamber of the dynamic stiffness control cylinder is connected to the air pump and is isolated from the atmosphere through the dynamic air relief valve. The lower chamber of the dynamic-static conversion cylinder is connected to the atmosphere through the dynamic-static conversion air relief valve, and the piston rod in the dynamic-static conversion cylinder moves downward;

Working state two, the independent dynamic branch control valve is closed, the lower chamber of the dynamic stiffness control cylinder is isolated from the atmosphere, the two-position three-way reversing valve is connected to the dynamic cylinder trunk, the dynamic air relief valve is opened, and the air pump is connected to the atmosphere through the two-position three-way reversing valve and the dynamic air relief valve; when working under pressure, the dynamic-static conversion air relief valve is opened, and the air pump is connected to the dynamic-static conversion trunk through the two-position three-way reversing valve;

Working state three, the dynamic branch control valve is opened, the dynamic air relief valve is opened, the two-position three-way reversing valve is connected to the dynamic-static conversion main circuit, the dynamic-static conversion air relief valve is closed, the lower chamber of the dynamic stiffness control cylinder is connected to the atmosphere, and the gas of the air pump is filled into the lower chamber of the dynamic-static conversion cylinder to lift the piston rod of the dynamic-static conversion cylinder to realize static testing.

Compared with the prior art, the present invention has achieved the following technical effects:

The present invention connects a dynamic branch control valve to each dynamic cylinder branch and also connects a dynamic air release valve to the dynamic cylinder main line, thereby preventing one of the dynamic stiffness control cylinders from affecting the motion trajectory of other dynamic stiffness control cylinders when compressed, so that each dynamic stiffness control cylinder is controlled independently without interfering with each other, and ultimately ensures that each dynamic stiffness control cylinder and the dynamic-static conversion cylinder can be tested according to the expected motion trajectory.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic structural diagram of a balancing ability testing device based on multiple cylinders that can be switched between static and dynamic according to an embodiment of the present invention;

FIG2 is a schematic structural diagram of a test module with a support plate in a balancing ability test device based on multiple cylinders capable of switching between static and dynamic states according to an embodiment of the present invention;

3 is a schematic structural diagram of a test module without a support plate in a balancing ability test device based on multiple cylinders capable of switching between static and dynamic states according to an embodiment of the present invention;

4 is a schematic diagram of a dynamic stiffness control cylinder in a balancing ability test device based on multiple cylinders capable of switching between static and dynamic states according to an embodiment of the present invention when the cylinder is in a working state;

5 is a schematic diagram of a dynamic stiffness control cylinder in a balancing ability test device based on multiple cylinders capable of switching between static and dynamic states when the cylinder is in a second working state according to an embodiment of the present invention;

6 is a schematic diagram of the dynamic stiffness control cylinder in the dynamic-static conversion balancing ability testing device based on multiple cylinders according to an embodiment of the present invention when the cylinder is in a working state at three times;

FIG7 is a schematic diagram of a working state of a balancing ability testing device based on a multi-cylinder movable-static switch with a static-dynamic switch cylinder according to an embodiment of the present invention;

FIG8 is a second schematic diagram of the working state of the balancing ability testing device based on a multi-cylinder movable-static switch with a static-static switch cylinder according to an embodiment of the present invention;

FIG9 is a third schematic diagram of the working state of the balancing ability testing device based on a multi-cylinder movable-static switch with a static-dynamic switch cylinder according to an embodiment of the present invention;

FIG10 is a schematic diagram of the back structure of a balancing ability testing device based on multiple cylinders that can be switched between static and dynamic according to an embodiment of the present invention;

11 is a schematic structural diagram of an armrest module in a balancing ability testing device based on a multi-cylinder that can be switched between static and dynamic according to an embodiment of the present invention;

FIG12 is an external schematic diagram of a test device in a balancing ability test device based on a multi-cylinder that can be switched between static and dynamic according to an embodiment of the present invention;

13 is a schematic structural diagram of a dynamic stiffness control cylinder in a balancing ability testing device based on multiple cylinders capable of switching between static and dynamic states according to an embodiment of the present invention;

In the figure: 1-display module; 11-display body; 12-display fixing rod; 13-display universal joint; 2-armrest module; 21-front armrest; 22-side armrest; 23-armrest connecting hole; 24-armrest threaded hole; 3-test module; 31-sensor assembly; 32-cylinder assembly; 33-bottom plate; 34-control screen; 35-housing; 36-connecting part; 37-support plate; 38-dynamic stiffness control cylinder; 39-dynamic-static conversion cylinder; 40-test universal joint; 41-dynamic branch control valve; 42-dynamic relief valve; 43-dynamic-static conversion relief valve; 44-two-position three-way reversing valve; 45-dynamic cylinder branch; 46-dynamic cylinder main; 47-dynamic-static conversion branch; 48-dynamic-static conversion main; 49-pressure gauge; 4-air pump; 5-support rod; 6-first tightening knob; 7-second tightening knob.

Detailed ways

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

The purpose of the present invention is to provide a balancing ability testing device and testing method based on multiple cylinders that can be switched between static and dynamic, so as to solve the technical problems existing in the above-mentioned prior art and realize the separate control of the dynamic stiffness control cylinder and the dynamic-static conversion cylinder, so that they can run according to the expected trajectory.

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

Embodiment 1

As shown in Figures 1 to 13, this embodiment provides a dynamic-static convertible balancing ability testing device based on multiple cylinders, including a display module 1, an armrest module 2 and a test module 3, wherein the display module 1 and the test module 3 are respectively arranged at the upper and lower ends of the armrest module 2, the display module 1 and the test module 3 are electrically connected, the display module 1 is used to display relevant data of the test module 3, and the armrest module 2 is used to support the person being tested.

As shown in Figures 2 and 3, the test module 3 includes a cylinder assembly 32, a base plate 33, a support plate 37 and a test universal joint 40, wherein the cylinder assembly 32 is fixed on the base plate 33, each telescopic end of the cylinder assembly 32 is in contact with the lower surface of the support plate 37, and the two ends of the test universal joint 40 are respectively fixed at the center of the base plate 33 and the support plate 37. When the equipment is in a dynamic balance state, the support plate 37, supported by the test universal joint 40, can shake in any direction with the shaking of the tester to achieve a dynamic balance test. The existence of the test universal joint 40 realizes the rotation of the support plate 37 while effectively preventing the support plate 37 from moving in the planar direction.

The cylinder assembly 32 includes a plurality of dynamic stiffness control cylinders 38 and a plurality of static-dynamic conversion cylinders 39, wherein the number of dynamic stiffness control cylinders 38 is 3-9. Too few cylinders will affect the stability of the support plate 37, and the force borne by each dynamic stiffness control cylinder 38 will increase, and the performance requirements for the dynamic stiffness control cylinder 38 will be improved. Too many cylinders will occupy the space of the equipment. Similarly, the number of static-dynamic conversion cylinders 39 is also 3-9. Specifically, as shown in FIG3 , there are four dynamic stiffness control cylinders 38 and static-dynamic conversion cylinders 39 (three static-dynamic conversion cylinders 39 are not shown), and they are arranged in an alternating manner. As shown in FIG4-FIG9 , there are three dynamic stiffness control cylinders 38 and static-dynamic conversion cylinders 39. Of course, the specific number of dynamic stiffness control cylinders 38 and static-dynamic conversion cylinders 39 can be adjusted by technicians in this field according to actual needs, and is not limited to these two cases. Regarding the specific structure of the dynamic stiffness control cylinder 38 and the dynamic-static conversion cylinder 39, both are common cylinder structures on the market, including a cylinder body with a piston inside the cylinder body. The piston divides the inner part of the cylinder body into two upper and lower cavities. The piston is connected to a telescopic rod (or piston rod), and an upper cavity interface and a lower cavity interface are provided on the side wall of the cylinder body for connecting related air circuits.

The upper cavity interface of the dynamic stiffness control cylinder 38 is used to connect to the atmosphere, and the lower cavity interface of the dynamic stiffness control cylinder 38 is connected to a dynamic cylinder branch 45. Each dynamic cylinder branch 45 is connected to a dynamic branch control valve 41 and a pressure gauge 49. The dynamic branch control valve 41 can be an existing common electric control valve. The dynamic branch control valve 41 is used to control the on and off of the dynamic cylinder branch 45, that is, when the dynamic branch control valve 41 is closed, the dynamic cylinder branch 45 is closed, and when the dynamic branch control valve 41 is opened, the dynamic cylinder branch 45 is opened. The end of the dynamic cylinder branch 45 away from the dynamic stiffness control cylinder 38 is connected to a dynamic cylinder trunk 46, and the dynamic cylinder trunk 46 is connected to a dynamic air relief valve 42. When the dynamic air relief valve 42 is in an open state, it can be connected to the atmosphere. At this time, the gas in the dynamic cylinder trunk 46 and each dynamic cylinder branch 45 can flow out from the dynamic air relief valve 42.

The upper cavity interface of the dynamic-static conversion cylinder 39 is used to connect to the atmosphere, and the lower cavity interface of the dynamic-static conversion cylinder 39 is connected to a dynamic-static conversion branch 47. The end of the dynamic-static conversion branch 47 away from the dynamic-static conversion cylinder 39 is connected to a dynamic-static conversion main circuit 48. The dynamic-static conversion main circuit 48 is connected to a dynamic-static conversion air relief valve 43, and the dynamic-static conversion air relief valve 43 can be connected to the atmosphere when it is in an open state.

One end of the dynamic cylinder main circuit 46 away from the dynamic cylinder branch circuit 45 and one end of the dynamic-static conversion main circuit 48 away from the dynamic-static conversion branch circuit 47 are respectively connected to two air outlets of the two-position three-way reversing valve 44, and the air inlet of the two-position three-way reversing valve 44 is connected to the air pump 4. In actual use, by adjusting the two-position three-way reversing valve 44, the air pump 4 can be connected to the dynamic cylinder main circuit 46 or the dynamic-static conversion main circuit 48.

In this embodiment, as shown in FIG2 , a sensor assembly 31 is further provided on the upper surface of the support plate 37. The sensor assembly 31 includes a plurality of thin film pressure sensors and/or accelerometers. The thin film pressure sensors and accelerometers are both common existing sensor elements, and the relevant data detected by them can be transmitted to the display module 1. The arrangement of the thin film pressure sensor and the accelerometer is also a prior art, and reference can be made to the arrangement of the sensors in patent numbers CN202211475757.7 and CN202210804826.8, so no further description will be given here.

In this embodiment, as shown in FIG. 10 , the display module 1 includes a display screen body 11, a display screen fixing rod 12 and a display screen universal joint 13. One end of the display screen universal joint 13 is fixed to the upper end of the display screen fixing rod 12, and the other end of the display screen universal joint 13 is connected to the display screen body 11. The display screen universal joint 13 facilitates the adjustment of the display screen body 11 in the up, down, left and right directions to meet the needs of different testers. It is also possible to not set the display screen universal joint 13 according to actual conditions, and directly fix the display screen body 11 to the display screen fixing rod 12. The lower end of the display screen fixing rod 12 is used to connect with the armrest module 2.

In this embodiment, as shown in FIG11 , the armrest module 2 includes a front armrest 21 and two side armrests 22, and the two side armrests 22 are respectively fixed to the two ends of the rear side of the front armrest 21 to prevent the test subject from falling to the left and right directions. A handrail bar is provided on the front armrest 21, and the handrail bar and the front armrest 21 form an annular area, and the test subject can hold the handrail bar when standing to prevent the test subject from falling to the front and back directions.

In this embodiment, as shown in FIG. 10 , the front armrest 21 is connected to the test module 3 via a support rod 5, wherein the upper end of the support rod 5 is connected to the armrest module 2, and the lower end of the support rod 5 is connected to the test module 3. The specific connection relationship is as follows:

Two armrest connection holes 23 of different sizes are provided on the side of the front armrest 21 away from the side armrest 22. The display screen fixing rod 12 is a J-shaped structure, and the upper end of the support rod 5 is a 7-shaped structure. The lower end of the display screen fixing rod 12 and the upper end of the support rod 5 are respectively inserted into the two armrest connection holes 23. The bottom of the front armrest 21 is also provided with an armrest threaded hole 24, and a first fastening knob 6 is threadedly connected at the armrest threaded hole 24. The first fastening knob 6 has an external threaded column, and the external threaded column on the first fastening knob 6 is also threadedly connected to the display screen fixing rod 12 and the support rod 5. It can be understood that the lower end of the display screen fixing rod 12 and the upper end of the support rod 5 are provided with threaded holes corresponding to the first fastening knob 6, so as to facilitate the first fastening knob 6 to pass through and connect.

Similarly, as shown in Figure 12, a connecting portion 36 is provided on the test module 3, and a test threaded hole is provided on the side wall of the connecting portion 36. The lower end of the support rod 5 is sleeved on the outer side of the connecting portion 36, and also includes a second tightening knob 7. The second tightening knob 7 also has an external threaded column. The second tightening knob 7 passes through the lower end of the support rod 5 and is threadedly connected to the test threaded hole to fix the lower end of the support rod 5.

The first fastening knob 6 and the second fastening knob 7 facilitate the installation and disassembly of the support rod 5, the armrest module 2 and the display module 1, and the operation is convenient.

In this embodiment, the outer side of the test module 3 is provided with a shell 35. The shell 35 covers the internal dynamic stiffness control cylinder 38, the dynamic-static conversion cylinder 39, the air pump 4 and other components, and only exposes the part of the sensor assembly 31 where a person can stand. The shell 35 is preferably made of a material with moderate deformability and is installed in the bottom plate 33 through a snap-fit structure to facilitate its installation and removal.

In this embodiment, a controller is also provided inside the shell 35, and the controller includes but is not limited to a PLC controller or a single-chip microcomputer controller, etc. A control screen 34 is installed on the side wall of the shell 35, and the control screen 34 and the cylinder assembly 32 are electrically connected to the controller. The control screen 34 facilitates the staff to input operating instructions.

In this embodiment, in order to further stabilize the support plate 37 in a static state, the telescopic end surface of the dynamic stiffness control cylinder 38 is recommended to be an arc surface structure, and the telescopic end surface of the dynamic-static conversion cylinder 39 is a flat structure. Furthermore, in order to overcome the problem of long-term wear of the top end of the piston rod, its top end is set as a split structure and fixed to the piston rod by means of threads, etc., so that it can be replaced in time if it is worn.

In this embodiment, as for the working principle of the dynamic stiffness control cylinder 38, it can be seen from Figure 4 (there are three dynamic stiffness control cylinders 38 in Figure 4), the separate dynamic branch control valves 41 are provided with two working positions: when in working position one (i.e., the position of the dynamic branch control valve 41 in Figure 4), the lower chamber of the dynamic stiffness control cylinder 38 is connected to the air pump 4 or the outside world; when in working position two (i.e., the position of the dynamic branch control valve 41 in Figure 5), the connection between the air pump 4 or the outside world and the lower chamber of the corresponding dynamic stiffness control cylinder 38 is cut off, and the gas is sealed in the lower chamber of the dynamic stiffness control cylinder 38 and the pressure is maintained.

The dynamic relief valve 42 also has two working positions: in working position 1 (i.e., the working position of the dynamic relief valve 42 in FIG. 5 ), the dynamic relief valve 42 is connected to the atmosphere, and the pressure of the lower chamber in the dynamic stiffness control cylinder 38 is discharged or reduced after passing through the separate dynamic branch control valve 41; in working position 2 (i.e., the working position of the dynamic relief valve 42 in FIG. 4 ), the dynamic relief valve 42 is not connected to the outside atmosphere. The dynamic relief valve 42 is used to discharge or reduce the pressure of the gas inside the lower chamber of the dynamic stiffness control cylinder 38 to the atmosphere; to prevent the gas in the lower chamber of the dynamic stiffness control cylinder 38 from being effectively discharged when the pressure is reduced when the air pump 4 itself has the sealing ability or the exhaust ability is insufficient, so as to achieve rapid and timely adjustment of the pressure in the dynamic stiffness control cylinder 38.

Regarding the working principle of the static-dynamic conversion cylinder 39, the static-dynamic conversion cylinder 39 has two working positions:

Working position one, two-position three-way reversing valve 44 is connected to dynamic-static conversion main circuit 48, dynamic-static conversion air release valve 43 is closed, the lower chamber of dynamic-static conversion cylinder 39 is filled with gas to rated pressure, the upper chamber of dynamic-static conversion cylinder 39 is facing the atmosphere, and the piston rod of dynamic-static conversion cylinder 39 contacts support plate 37 to lift it up.

Working position 2, the two-position three-way reversing valve 44 is connected to the dynamic cylinder trunk 46, the dynamic-static conversion air release valve 43 is opened, and the upper chamber and the lower chamber of the dynamic-static conversion cylinder 39 are both connected to the atmosphere.

Embodiment 2

This embodiment provides a balancing ability test method based on a multi-cylinder dynamic-static conversion, based on the balancing ability test device based on a multi-cylinder dynamic-static conversion disclosed in the first embodiment, including three working states of the dynamic stiffness control cylinder 38, and three common working states of the dynamic stiffness control cylinder 38 and the dynamic-static conversion cylinder 39:

As shown in FIG. 4 to FIG. 6 , the dynamic stiffness control cylinder 38 has the following three working states.

Working state 1: The gas pressure in the lower chamber of the dynamic stiffness control cylinder 38 increases. As shown in FIG4 , the separate dynamic branch control valve 41 is located in working position 1 (i.e., open) and connected to the air pump 4, and the dynamic air release valve 42 is located in working position 2 (i.e., closed) to isolate the gas circuit from the atmosphere. At this time, the gas is filled into the lower chamber of the dynamic stiffness control cylinder 38, and the upper chamber of the dynamic stiffness control cylinder 38 is connected to the atmosphere. The pressure of the filled gas is detected by the pressure gauge 49, and the inflation ends when the set pressure is reached.

Working state 2: The dynamic stiffness control cylinder 38 is in the test state, as shown in FIG5 , at this time, the separate dynamic branch control valve 41 is in the working position 2 (i.e. closed), the lower chamber of the dynamic stiffness control cylinder 38 is isolated from the atmosphere and the air pump 4, and the gas is kept inside. The dynamic air release valve 42 is in the working position 1 (i.e. open), so that the dynamic air release valve 42 is connected to the atmosphere, and the residual gas in the air pump 4 is discharged through the dynamic air release valve 42, preventing the air pump 4 from being suffocated and causing damage to the air pump 4 and the overall pipeline system.

It should be noted that in state two, the pressure setting of the lower chamber of the dynamic stiffness control cylinder 38 can be set to the dynamic adjustment pressure section P1 and the static working pressure P2 as needed. Among them, all pressures P1 in the dynamic pressure section are much smaller than the static pressure P2. In the P1 pressure section, the pressure in the dynamic stiffness control cylinder 38 plays the function of adjusting the dynamic disturbance amplitude of the tester. The higher the P1 pressure, the greater the amplitude of the tester's shaking, and the higher the test accuracy of the balance tester. The lower the pressure, the lower the accuracy, which is more suitable for grading patients with known balance problems, and the higher the safety during the test. In the P2 pressure section, the tester's own weight and perturbation can no longer cause any movement to the support plate 37. At this time, the patient's static balance ability is tested. In the P1 pressure section, it can also be used to train the patient's balance ability. By adjusting the pressure, the patient can adapt to different disturbance amplitudes.

In working state three, as shown in Figure 6, in order to reduce the pressure in the lower chamber of the dynamic stiffness control cylinder 38, the separate dynamic branch control valve 41 is located in working position one (i.e. open) and the dynamic air relief valve 42 is located in working position one (i.e. open). At this time, the air pump 4 stops working and the pressure in the lower chamber of the dynamic stiffness control cylinder 38 is reduced to a specified pressure to meet the requirements.

The dynamic stiffness control cylinder 38 and the dynamic-static conversion cylinder 39 have the following three working states after cooperation:

Working state 1, as shown in FIG7, when the dynamic stiffness control cylinder 38 is inflated, the separate dynamic branch control valve 41 is located at working position 1 (i.e. open), the dynamic air relief valve 42 is located at position 2 (i.e. closed), the dynamic-static conversion air relief valve 43 is located at position 1 (i.e. open), and the inlet of the two-position three-way reversing valve 44 is connected to the dynamic cylinder trunk 46. At this time, the lower chamber of the dynamic stiffness control cylinder 38 is connected to the air pump 4 and is isolated from the atmosphere by the dynamic air relief valve 42. The lower chamber of the dynamic-static conversion cylinder 39 is connected to the atmosphere through the dynamic-static conversion air relief valve 43, and the piston rod in the dynamic-static conversion cylinder 39 moves downward to prevent it from blocking the movement of the support plate 37.

Working state 2, as shown in FIG8 , the separate dynamic branch control valve 41 is located in working position 2 (i.e. closed), the lower chamber of the dynamic stiffness control cylinder 38 is isolated from the atmosphere, the two-position three-way reversing valve 44 is connected to the dynamic cylinder trunk 46, the dynamic relief valve 42 is located in position 1 (i.e. open), and the air pump 4 is connected to the atmosphere through the two-position three-way reversing valve 44 and the dynamic relief valve 42 to prevent the air pump 4 and the overall pipeline system from being damaged by holding the breath. During the pressure-maintaining operation, the dynamic-static conversion relief valve 43 is located in position 1 (i.e. open). Under this configuration, the dynamic stiffness control cylinder 38 has only one pressure section, i.e., the low-pressure section P1. The static test state is realized by the dynamic-static conversion cylinder 39, i.e., the air pump 4 is connected to the dynamic-static conversion trunk 48 through the two-position three-way reversing valve 44, and is no longer realized by a single dynamic stiffness control cylinder 38. In addition to the convenience of operation, this setting also avoids the inconvenience of operation caused by the difference in the top of the piston rod of the dynamic stiffness control cylinder 38 and the dynamic-static conversion cylinder 39.

Working state three, as shown in Figure 9, the separate dynamic branch control valve 41 is located in the working position one (i.e. open), the dynamic air relief valve 42 is located in position one (i.e. open), the two-position three-way reversing valve 44 is connected to the dynamic-static conversion main circuit 48, and the dynamic-static conversion air relief valve 43 is located in position two (i.e. closed). At this time, the dynamic stiffness control cylinder 38 and the atmosphere are no longer connected, and the gas of the air pump 4 is filled into the lower chamber of the dynamic-static conversion cylinder 39 until its pressure reaches P2, and the piston rod of the dynamic-static conversion cylinder 39 is lifted to realize static testing.

The present specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of the present invention. At the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims (10)

1. Balance capability testing device based on can sound conversion of multicylinder, its characterized in that: the device comprises a display module (1), an armrest module (2) and a test module (3), wherein the display module (1) and the test module (3) are respectively arranged at the upper end and the lower end of the armrest module (2), the display module (1) is electrically connected with the test module (3), and the display module (1) is used for displaying related data of the test module (3);

The test module (3) comprises a cylinder assembly (32), a bottom plate (33), a supporting plate (37) and a test universal joint (40), wherein the cylinder assembly (32) is fixed on the bottom plate (33), each telescopic end in the cylinder assembly (32) is abutted against the supporting plate (37), and two ends of the test universal joint (40) are respectively fixed at the central positions of the bottom plate (33) and the supporting plate (37);

The cylinder assembly (32) comprises a plurality of dynamic stiffness control cylinders (38) and a plurality of dynamic and static conversion cylinders (39), an upper cavity interface of each dynamic stiffness control cylinder (38) is used for being connected with the atmosphere, a lower cavity interface of each dynamic stiffness control cylinder (38) is connected with a dynamic cylinder branch (45), each dynamic cylinder branch (45) is connected with a dynamic branch control valve (41), each dynamic branch control valve (41) is used for controlling the on-off of each dynamic cylinder branch (45), one end, far away from each dynamic stiffness control cylinder (38), of each dynamic cylinder branch (45) is connected with a dynamic cylinder trunk (46), and each dynamic cylinder trunk (46) is connected with a dynamic air release valve (42) which can be communicated with the atmosphere when the dynamic air release valve (42) is in an open state;

The upper cavity interface of the dynamic and static conversion cylinder (39) is used for being connected with the atmosphere, the lower cavity interface of the dynamic and static conversion cylinder (39) is connected with a dynamic and static conversion branch circuit (47), one end of the dynamic and static conversion branch circuit (47) far away from the dynamic and static conversion cylinder (39) is connected with a dynamic and static conversion trunk circuit (48), the dynamic and static conversion trunk circuit (48) is connected with a dynamic and static conversion air release valve (43), and the dynamic and static conversion air release valve (43) can be communicated with the atmosphere when in an open state;

One end of the dynamic cylinder trunk (46) far away from the dynamic cylinder branch (45) and one end of the dynamic and static conversion trunk (48) far away from the dynamic and static conversion branch (47) are respectively connected to two air outlets of a two-position three-way reversing valve (44), and an air inlet of the two-position three-way reversing valve (44) is connected with an air pump (4).

2. The multiple cylinder based dynamic-static convertible balance capability test device of claim 1, wherein: the support plate (37) is also provided with a sensor assembly (31), and the sensor assembly (31) comprises a plurality of film pressure sensors and/or accelerometers.

3. The multiple cylinder based dynamic-static convertible balance capability test device of claim 1, wherein: the display module (1) comprises a display screen body (11), a display screen fixing rod (12) and a display screen universal joint (13), one end of the display screen universal joint (13) is fixed at the upper end of the display screen fixing rod (12), the other end of the display screen universal joint (13) is connected with the display screen body (11), and the lower end of the display screen fixing rod (12) is used for being connected with the handrail module (2).

4. The multi-cylinder based dynamic-static switching balance capability test device according to claim 3, wherein: the handrail module (2) comprises a front handrail (21) and two side handrails (22), wherein the two side handrails (22) are respectively fixed at two ends of the front handrail (21), and a handrail rod is arranged on the front handrail (21).

5. The multi-cylinder based dynamic-static conversion balance capability test device according to claim 4, wherein: the front handrail (21) is connected with the test module (3) through a supporting rod (5);

Two handrail connecting holes (23) are formed in one surface, far away from the side handrail (22), of the front handrail (21), the lower end of the display screen fixing rod (12) and the upper end of the supporting rod (5) are respectively inserted into the two handrail connecting holes (23), a handrail threaded hole (24) is further formed in the bottom of the front handrail (21), a first fastening knob (6) is connected at the handrail threaded hole (24) in a threaded mode, and the first fastening knob (6) is further connected with the display screen fixing rod (12) and the supporting rod (5) in a threaded mode;

The testing module (3) is provided with a connecting part (36), the side wall of the connecting part (36) is provided with a testing threaded hole, the lower end of the supporting rod (5) is sleeved on the outer side of the connecting part (36), the testing module further comprises a second fastening knob (7), and the second fastening knob (7) penetrates through the lower end of the supporting rod (5) and then is in threaded connection with the testing threaded hole.

6. The multiple cylinder based dynamic-static convertible balance capability test device of claim 1, wherein: and a shell (35) is sleeved outside the test module (3).

7. The multiple cylinder based dynamic-static convertible balance capability test device of claim 6, wherein: the controller is further arranged inside the shell (35), a control screen (34) is arranged on the side wall of the shell (35), and the control screen (34) is electrically connected with the controller.

8. The multiple cylinder based dynamic-static convertible balance capability test device of claim 1, wherein: the end face of the telescopic end of the dynamic stiffness control cylinder (38) is of an arc surface structure, and the end face of the telescopic end of the dynamic and static conversion cylinder (39) is of a plane structure.

9. The multiple cylinder based dynamic-static convertible balance capability test device of claim 1, wherein:

the dynamic bypass control valve (41) is provided with two working positions: when in working position, the lower cavity of the dynamic stiffness control cylinder (38) is connected with the air pump or the outside; when the second working position is adopted, the connection between the air pump or the outside and the lower cavity of the dynamic stiffness control cylinder (38) is cut off, and the air is sealed in the lower cavity of the dynamic stiffness control cylinder (38) and the pressure is kept;

the dynamic air release valve (42) has two operating positions: when in working position, the dynamic air release valve (42) is communicated with the atmosphere, and the pressure of the lower cavity in the dynamic stiffness control cylinder (38) is discharged or reduced after passing through the independent dynamic branch control valve (41); in the second working position, the dynamic air release valve (42) is not communicated with the outside atmosphere;

The dynamic-static conversion cylinder (39) has two working positions: the first working position is that the two-position three-way reversing valve (44) is connected with the dynamic-static conversion trunk (48), the dynamic-static conversion air release valve (43) is closed, the lower cavity of the dynamic-static conversion air cylinder (39) is filled with air to rated pressure, the upper cavity of the dynamic-static conversion air cylinder (39) is communicated with the atmosphere, and the piston rod of the dynamic-static conversion air cylinder (39) is in contact with the supporting plate (37) to jack up the piston rod; and in the second working position, the two-position three-way reversing valve (44) is connected with the dynamic cylinder trunk (46), the dynamic-static conversion air release valve (43) is opened, and the upper cavity and the lower cavity of the dynamic-static conversion cylinder (39) are communicated with the atmosphere.

10. The balance capability testing method based on the dynamic and static conversion of the multiple cylinders is characterized in that the balance capability testing device based on the dynamic and static conversion of the multiple cylinders according to any one of claims 1-9 comprises three working states of a dynamic stiffness control cylinder (38), and three working states of the dynamic stiffness control cylinder (38) and a dynamic and static conversion cylinder (39) which are common:

the dynamic stiffness control cylinder (38) has the following three operating states:

The working state is as follows: the dynamic stiffness control cylinder (38) is in a lower cavity gas pressure increasing state, an independent dynamic branch control valve (41) is opened and communicated with the air pump (4), a dynamic air release valve (42) is closed to isolate an air path from the atmosphere, gas is filled into the lower cavity of the dynamic stiffness control cylinder (38), the upper cavity of the dynamic stiffness control cylinder (38) is connected with the atmosphere, the pressure of the filled gas is detected by a pressure gauge (49), and when the set pressure is reached, the air inflation is ended;

And the working state is as follows: the dynamic stiffness control cylinder (38) is in a test state, at the moment, an independent dynamic branch control valve (41) is closed, the lower cavity of the dynamic stiffness control cylinder (38) is isolated from the atmosphere and the air pump (4), air is kept in the dynamic stiffness control cylinder, the dynamic air release valve (42) is opened, so that the dynamic air release valve (42) is communicated with the atmosphere, and residual air in the air pump (4) is discharged through the dynamic air release valve (42);

In the third working state, in order to reduce the pressure of the lower cavity of the dynamic stiffness control cylinder (38), the dynamic branch control valve (41) is opened, the dynamic air release valve (42) is opened, at the moment, the air pump (4) stops working, and the pressure of the lower cavity of the dynamic stiffness control cylinder (38) is reduced by the specified pressure;

The dynamic stiffness control cylinder (38) and the dynamic-static conversion cylinder (39) are matched in three working states:

when the dynamic stiffness control cylinder (38) is inflated in the first working state, a dynamic branch control valve (41) is opened, a dynamic air release valve (42) is closed, a dynamic and static conversion air release valve (43) is opened, an inlet of a two-position three-way reversing valve (44) is communicated with a dynamic cylinder trunk (46), at the moment, the lower cavity of the dynamic stiffness control cylinder (38) is connected with an air pump (4) and is isolated from the atmosphere through the dynamic air release valve (42), the lower cavity of a dynamic and static conversion cylinder (39) is communicated with the atmosphere through the dynamic and static conversion air release valve (43), and a piston rod in the dynamic and static conversion cylinder (39) moves downwards;

In the second working state, an independent dynamic branch control valve (41) is closed, the lower cavity of the dynamic stiffness control cylinder (38) is isolated from the atmosphere, a two-position three-way reversing valve (44) is connected with a dynamic cylinder main path (46), a dynamic air release valve (42) is opened, and an air pump (4) is communicated with the atmosphere through the two-position three-way reversing valve (44) and the dynamic air release valve (42); when the pressure maintaining work is performed, the dynamic-static conversion air release valve (43) is opened, and the air pump (4) is connected with the dynamic-static conversion trunk (48) through the two-position three-way reversing valve (44);

In the third working state, the dynamic branch control valve (41) is opened, the dynamic air release valve (42) is opened, the two-position three-way reversing valve (44) is connected with the dynamic-static conversion trunk (48), the dynamic-static conversion air release valve (43) is closed, the lower cavity of the dynamic stiffness control cylinder (38) is communicated with the atmosphere, and the air of the air pump (4) is filled into the lower cavity of the dynamic-static conversion cylinder (39) to jack up the piston rod of the dynamic-static conversion cylinder (39) to realize static test.