KR101208987B1 - Human dummy head and measuring apparatus of brain pressure under external shock - Google Patents

Abstract

The manikin head according to an embodiment of the present invention is made of a skull-like material, a skull portion having an accommodation chamber therein, an opening formed to open a portion of the accommodation chamber on one side of the skull portion, and hollow A hole of the cover, coupled to the skull to cover at least a part of the opening, a cover part supporting the skull, at least one pressure sensor disposed on an inner circumferential surface of the storage chamber, and to fill the storage chamber; By including a fluid part mounted in the accommodation chamber and made of a brain-like material, it is possible to accurately measure the pressure change inside the skull caused by an external impact, thereby diagnosing and analyzing the degree of damage and injury to the head of the human body. have.

Description

HUMAN DUMMY HEAD AND MEASURING APPARATUS OF BRAIN PRESSURE UNDER EXTERNAL SHOCK}

Embodiments of the present invention are directed to a device capable of measuring changes in brain pressure due to impact.

The head structure of the human body is composed of the hair, the scalp, the skull inside the scalp, and the brain inside the skull, which absorb a part of the external impact (about 13-20%).

Excessive shock and deformation of the brain, which occurs inside the skull of the head due to external shocks, can be fatal to life and paralyze the function of the brain.

The behavior occurring inside the skull after an external shock is a partial change in brain pressure. The present invention is to provide a tool for determining the degree of damage and injury of the brain by accurately measuring the change in the behavior of the brain pressure.

In general, in order to investigate the degree of injury of the driver and the occupant due to the collision of the vehicle or the damage of the head of the combatant due to the unspecified external shock generated on the battlefield, the development of a dummy very similar to the actual human head is essential.

Each component of the dummy head must have characteristics that are structurally or physically similar to the human body.

A sensor capable of measuring the deformation of the dummy head or the change in the brain pressure due to an external impact should be mounted on the dummy head, and the mounted sensor and the dummy head itself need sufficient durability to satisfy the repeatability of the test evaluation.

To evaluate these trials, some used real head skulls for research purposes. However, since experiments with the human body are very limited, the finite element method may be used to predict the change in brain pressure by analytical methods. In addition, an acceleration sensor or a pressure sensor may be attached to a kind of mannequin made similarly to a human body to analyze the degree of injury of a vehicle driver, but such a mannequin is based on mechanical and physical properties of the human skull and brain. Because it is not manufactured, there are limitations in accurately analyzing and predicting human head injury.

In particular, in the case of manufacturing a dummy by injecting a brain material into the interior of the skull, the already injected brain material flows out or the pressure sensor Has a problem that is difficult to mount at a fixed position.

In addition, it is difficult to implement a change in thickness and structural shape according to the position of the skull similar to the skull of an actual human body.

One embodiment of the present invention is to provide a brain pressure measuring device capable of measuring a change in the brain pressure reliably and accurately during the impact of the impact body.

In addition, the thickness change and structural shape change according to the position of the skull is implemented to be similar to the skull of the actual human body, and to provide a pressure measuring device that can be formed arbitrarily arranged a pressure sensor capable of measuring the brain pressure.

And, the problem to be solved by the present invention is not limited to the above-mentioned problem, another problem to be solved by the present invention that is not mentioned here is a common knowledge in the technical field to which the present invention belongs from the following description It will be clearly understood by those who have it.

In order to achieve the above object of the present invention, the manikin head according to an embodiment of the present invention, the skull portion is made of a material similar to the skull, and having an accommodation chamber therein, and the accommodation on one side of the skull portion An opening formed to open a portion of the seal, a hollow hole, coupled to the skull to cover at least a portion of the opening, and a cover part to support the skull, and at least one of an inner circumferential surface of the storage chamber. And a fluid unit mounted in the accommodation chamber so as to fill the above-described pressure sensor and the accommodation chamber, and made of a brain-like material.

According to an example related to the present invention, the manikin head is coupled to the cover part and is provided with a pressurizing unit having a surface formed to be movable through the hollow hole so as to control the pressure of the accommodation chamber. Includes more wealth.

According to an example related to the present invention, the sealing part further includes an air outlet and an inlet.

According to an example related to the present invention, the pressing unit is formed to be movable up and down by a pressing plate and a rotation, and includes a pressing rod configured to press the pressing plate.

In addition, in order to realize the above object, the present invention, the human body head including a skull-like material and brain-like material, a helmet coupled to surround at least a portion of the human body head and a predetermined direction in the helmet A collider lightning pressure measuring device including a collider colliding at a high speed is disclosed.

According to an example related to the present invention, the impact object lightning pressure measuring apparatus further includes a band portion formed to closely contact the helmet and the skull portion to be attached to the outer circumferential surface of the skull portion.

According to an example related to the present invention, a plurality of pressure sensors are attached along the inner circumferential surface of the skull portion located on the same plane as the traveling direction of the collider.

According to an example related to the present invention, the impact object brain pressure measuring device, the guide groove is formed on the inner peripheral surface so that the pressure sensor can move up and down along the inner peripheral surface of the skull.

According to an example related to the present invention, the impact object brain pressure measuring device further comprises a fixing part so that the pressure sensor can be fixed at a predetermined position while moving along the inner circumferential surface of the skull part.

According to at least one embodiment of the present invention, the apparatus for measuring blood pressure includes an integrated skull very similar to the material, shape, and structure of the human skull, and a viscous material similar to the brain inside the skull. It is possible to manufacture a dummy head very similar to the actual human head, and to accurately measure the pressure change inside the skull caused by an external impact, and to analyze and analyze the degree of damage and injury to the human head.

1 is a conceptual diagram of a collider lightning pressure measuring device according to an embodiment of the present invention.
2 is a sectional view of Fig. 1;
3 is an enlarged view of a portion A of FIG. 2.
4 is a perspective view of a manikin head according to an embodiment of the present invention.
5 is a conceptual diagram in a state in which the human body head and the helmet associated with one embodiment of the present invention;

Hereinafter, a manikin head according to an embodiment of the present invention and a collider body pressure measuring apparatus having the same will be described in more detail with reference to the accompanying drawings.

The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role.

In the present specification, different embodiments are given the same or similar reference numerals for the same or similar configurations, and the description is replaced with the first description. As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.

1 is a conceptual diagram of an impact collider pressure measuring apparatus according to an embodiment of the present invention, Figure 2 is a cross-sectional view of Figure 1, Figure 3 is an enlarged view of portion A of FIG. 4 is a perspective view of a manikin head according to an embodiment of the present invention, Figure 5 is a conceptual diagram in a state in which the manikin head and the helmet according to an embodiment of the present invention combined.

1 to 5, the human body head according to an embodiment of the present invention includes a skull part 110, an opening 120, a cover part 130, a pressure sensor 140, and a fluid part 150. Include. The skull (110) is a portion corresponding to the hard skull of the human head, and includes a cortical bone of the outer layer and a cancellous bone of the inner layer.

For example, the skull unit 110 may be formed of a special plastic material (VeroGray, trade name) having similar mechanical and physical properties.

The outline of the skull 110 sends a skull 3D data of a Korean man's standard size directly to a rapid prototyping modeler to produce an integral skull model (the skull 110).

The skull unit 110 is exactly the thickness change and shape change according to the position of the skull. And, the skull portion 110 is formed in the receiving chamber so that the fluid portion 150 is made of a brain-like material therein.

The opening 120 is formed to open the accommodation chamber at the lower end of the skull portion 110.

The cover part 130 is formed to cover a part of the opening 120 in combination with the skull part 110 and includes a hollow hole.

In addition, the cover portion 130 corresponds to the neck vertebra supporting the head in the manikin head structure, is formed to support the skull portion 110. In addition, the cover part 130 may be coupled to the fixing jig 190 by the fixing screw 131 to form a thread 163.

The pressure sensor 140 is arranged so that when the skull 110 is impacted, the fluid 150 filling the inside of the skull 110 measures the pressure applied to the inner wall of the accommodation chamber of the skull 110. In particular, the present invention has to measure a partial change in the brain pressure due to an external impact, so that it is arranged in plurality on the inner wall of the storage chamber.

In particular, the pressure sensor 140 is disposed along the inner circumferential surface of the skull portion 110 in contact with the imaginary plane including the traveling direction of the collider 200, as shown in FIG. 1 or 2, whereby the collider 200 The change in the brain pressure on the inner circumferential surface of each skull unit 110 according to the direct impact of the) can be accurately measured.

The pressure sensor 140 transmits an electrical signal about a change in the brain pressure to a controller disposed outside by the pressure sensor cable 141. The pressure sensor cable 141 bundles the plurality to form the pressure sensor cable bundle 142, and is formed to have wear resistance and sufficient tensile strength with respect to the external environment.

The fluid part 150 is mounted in the accommodation chamber to fill the inside of the accommodation chamber with a predetermined pressure. The fluid unit 150 to be mounted has properties similar to those of the brain, so as to accurately measure changes in brain pressure due to impact.

For example, the fluid part 150 may be formed using a special silicone (KE-11, trade name) of a silicon-based material, which is a material similar in mechanical properties and physical properties to the brain.

The cover part 130 may further be coupled to the sealing part 160. The cover part 130 includes a pressing unit which is slidably movable through the hollow hole 161 and the hollow hole 161. For example, the hollow hole 161 may include a screw groove, and the body of the pressing unit may have a thread 164b to correspond to the screw groove.

Due to this configuration, the pressure in the storage chamber can be adjusted by rotating the pressurizing unit so as to be movable along the screw groove. That is, the fluid unit 150 may be filled in the accommodating chamber of the skull unit 110, and the accommodating chamber may be sealed by the sealing unit 160, and then the pressure in the accommodating chamber may be adjusted by the pressure unit.

The pressurizing unit includes a pressurizing plate 133 and a pressurizing rod 164 formed to be movable up and down by rotation and pressurizing the pressurizing plate 133.

The pressure plate 133 is formed to directly press the fluid part 150 in contact with the fluid part 150, and the pressure rod 164 rotates along a hole having a screw groove in the sealing part 160. It is possibly formed. In addition, the scale rod 164a may be formed on the pressure rod 164 so as to check the pressure being pushed along the rotation.

One end of the pressure rod 164 may be fitted or screwed into the pressure plate 133, and thus, the pressure plate 133 may be effectively moved by using the pressure rod 164.

The seal 160 may further include an air outlet and an inlet 162. Injecting the brain-like material constituting the fluid portion 150 into the inlet 162, and in addition to allowing the air to escape when the brain-like material is injected into the air outlet, if there is a sudden pressure rise above a predetermined pressure is sealed Is formed to be separated from the unit 160, to prevent unexpected damage of the skull unit (110).

The air outlet may have a screw groove formed on an inner circumferential surface thereof, and an outflow prevention part 165 corresponding to the screw groove may be formed. For this reason, the air outlet may be sealed by the outflow prevention part 165.

In addition, the outflow prevention part 165 is formed in a wedge shape, and is spaced apart from the screw groove by more than a predetermined time, through the discharge hole formed toward the outside from the inner side of the receiving portion in the wedge-shaped side, formed so that the substance inside do.

Including the above-described human body head, the helmet 170 and the collider 200 may configure the collider 200 brain pressure measuring device.

As such, the impact object 200 brain pressure measuring apparatus according to an embodiment of the present invention can measure the change in the brain pressure when the impact body 200 impacts a part of the helmet 170 while wearing the helmet 170. have.

The helmet 170 may be made of metal or synthetic resin, and formed to surround at least a portion of the skull part 110.

Here, the outer surface of the skull portion 110 may further include a band portion 180. The helmet 170 and the skull part 110 attached to each other by the band part 180 are in close contact with each other, and the impact applied to the helmet 170 is transmitted to the inside of the skull part 110. In addition, the acceleration sensor 145 is mounted on the outer surface of the skull unit 110 to measure the impact acceleration applied to the skull unit 110.

As described above, the collision body 200 is set in the movement direction to collide at a high speed in the predetermined direction of the helmet 170, the pressure sensor 140 correspondingly to the inner wall of the storage chamber or the inner circumferential surface of the skull 110 Are placed along.

The position where the pressure sensor 140 is disposed is a point where the virtual plane 300 including the moving direction of the collider 200 meets the inner wall of the storage chamber or the inner circumferential surface of the skull 110 as described above.

In addition, the change in the direction of movement of the impact body 200, the change in the brain pressure corresponding to the impact point of the helmet 170 corresponding to this, so that the guide groove 111 and the guide on the inner peripheral surface of the skull unit 110 The part 112 is formed and the pressure sensor 140 is movable along this groove. The pressure sensor 140 may move along the groove while being fixed to the fixing unit 144, and measure the change in pressure while moving or fixing the pressure sensor 140 according to the moving direction.

The fixing part 144 is formed to fix the position at a predetermined position to the guide part 112 formed in proximity to both side surfaces of the guide groove 111. For example, the fixing part 144 may be formed to have a size corresponding to the distance between the guide parts 112 at both ends, and may be formed to be slidably movable with a predetermined or more frictional force.

In addition, the fixing part 144 may include a fixing screw and a through hole, and may be formed to press one surface of the guide part 112 by rotation. In this case, the guide portion formed on the inner surface of the skull portion by rotating the fixing screw at the position to be fixed so that one end of the fixing screw is moved outward from the inside of the skull portion to press one surface of the guide portion, Can be fixed to (112).

In addition, as shown in Figures 4 and 5, the lower end of the manikin head is formed with a fixing jig 190 is coupled to the cover 130 or the sealing unit 160 and the fixing screw 131, the collision body ( 200) can support the brain pressure measuring device.

The above-described phantom head and the collider body pressure measuring apparatus having the same are not limited to the configuration and method of the above-described embodiments, but the above embodiments may be modified in various ways so that various modifications may be made. Or some may be selectively combined.

Claims (9)

Manikin head;
A helmet coupled to surround at least a portion of the manikin head; And
And a collider colliding with the helmet at a high speed in a predetermined direction,
The human body head is
Skull part which has an accommodating chamber inside;
An opening formed at one side of the skull to open a portion of the accommodation chamber;
A cover part having a hollow hole, coupled to the skull part to cover at least a portion of the opening, and supporting the skull part;
At least one pressure sensor disposed on an inner circumferential surface of the accommodation chamber;
A fluid unit mounted in the accommodation chamber to fill the accommodation chamber; And
It is coupled to the cover portion, and provided with a pressure unit which is formed to be movable on one surface through the hollow hole includes a sealing portion formed to adjust the pressure of the storage chamber,
The pressure sensor is coupled to the guide groove extending in the vertical direction along the inner circumferential surface of the skull portion so as to be located on the same plane as the traveling direction of the collider, so as to be movable in the vertical direction,
The sealing unit, the impact object brain pressure measuring device, characterized in that it comprises an air outlet and the air outlet to cover the air outlet so that it can be separated from the seal when pressed above a predetermined pressure. delete delete The method of claim 1,
The pressure unit is a pressure plate; And
It is formed so as to be movable up and down by rotation, the impact object pressure measuring device comprising a pressure rod made to press the pressure plate. delete The method of claim 1,
On the outer circumferential surface of the skull portion, the impact body thrust pressure measurement device further comprises a band portion formed to be in close contact with the skull portion and the skull. The method of claim 1,
And a plurality of pressure sensors are attached along the inner circumferential surface of the skull portion on the same plane as the traveling direction of the collider. delete The method of claim 1,
The collider body pressure measurement apparatus further comprises a fixing part to be fixed at a predetermined position while the pressure sensor moves along the inner circumferential surface of the skull.

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