KR101798948B1 - Valve Box Modeling Apparatus and Valve Box Modeling Method - Google Patents

Abstract

Disclosed are a valve box modeling apparatus including an anti-shake device and a valve box modeling method. According to an embodiment of the present invention, the valve box modeling apparatus (100) comprises: an input unit (140) receiving a tilt setting value of a 3D scanner (101); a slope sensing unit (110) transmitting sensed tilt data to a control unit (120); and a control unit (120) controlling the operation of an anti-shake device (102). According to the present invention, it is possible to accurately and easily measure the internal and external dimensions in accordance with the shape and type of an object to be measured.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve box modeling apparatus and a valve box modeling method,

The present invention relates to a valve box modeling apparatus and a valve box modeling method, and more particularly, to a valve box modeling apparatus and a valve box modeling method including an anti-shake apparatus.

For valves mounted on large or small piping lines, valve boxes are installed at specific locations according to the designer's intention or operator's intention.

When a valve box is installed and operated, a plurality of valve boxes are installed, and then a similar valve box is built again. After the valve box is mounted, the valve box is modeled with some specifications according to the designer's intention. It also produces.

According to the related art, the operator modeled the valve box by measuring the size of the pre-installed valve through a measuring operation using a measuring instrument such as a tape measure or a triangle.

However, the conventional measuring method has a problem that the error of the measured value is significant according to the skill level of the operator, and a lot of time is required for the actual measuring operation.

A large 3D scanner is used to solve this problem.

In the case of a large-sized 3D scanner according to the related art, there is a problem that a reference mark must be attached to various positions of a measurement object after fixed at a specific position, and it takes a long time to perform arithmetic processing after measurement.

To solve these problems, a portable 3D scanner device has been developed and utilized.

In the portable 3D scanner according to the related art, a 3D scanner is mounted on an arm or an shoulder of a worker in order to scan a measurement object and extract 3D data.

However, in the case of the portable 3D scanner according to the related art, there is a problem that an error occurs in the measured value due to the arm or shoulder shaking during the scanning operation of the operator.

Accordingly, there is a need for a technique for a 3D scanner capable of solving the above-mentioned problems according to the related art.

Korean Patent Publication No. 10-2015-0141107 (published on December 17, 2015)

SUMMARY OF THE INVENTION An object of the present invention is to provide a valve box modeling apparatus and a valve box modeling apparatus including an anti-shake device capable of accurately and easily measuring internal and external dimensions according to a shape type of an object to be measured and extracting drawing information based on measured data, And to provide a modeling method.

According to an aspect of the present invention, there is provided a 3D scanner comprising: a 3D scanner; a 3D scanner mounted on one side of the 3D scanner to maintain a tilt of the 3D scanner at a predetermined tilt value; An input unit which is mounted on one side of the anti-shake device and receives an absolute coordinate value of a plurality of reference points located in the inside and outside of the measurement object from a user and receives a tilt setting value of the 3D scanner from a user; A tilt sensing unit mounted on one side of the 3D scanner to sense the tilt of the 3D scanner and transmit the sensed tilt data to the controller; And a controller for controlling the operation of the 3D scanner based on the input value input from the input unit to acquire measurement data from the 3D scanner, and based on the tilt data received from the tilt sensing unit, And a control unit for controlling the operation of the anti-shake device by calculating a correction angle and an angular velocity.

In one embodiment of the present invention, the 3D scanner is an apparatus for scanning an external shape of an object to be measured using an optical method, and further includes an X-ray measuring device capable of scanning an internal shape of the object to be measured Lt; / RTI >

In one embodiment of the present invention, the anti-shake device includes: an upper rotation binding link for mounting a 3D scanner; A lower rotation binding link located in a direction perpendicular to the upper rotation binding link and spaced apart from the upper rotation binding link by a predetermined distance; A first link and a second link which are respectively coupled to the hinge structure by the upper rotation binding link and the lower rotation binding link; A first driving unit mounted on a binding portion between the upper rotation binding link and the first link; And a second driving part mounted on a binding part of the lower rotation binding link first link.

In one embodiment of the present invention, the tilt sensing unit 100 may be a gyroscope sensor.

The first driving unit 311 and the second driving unit 321 may be servo motors.

In one embodiment of the present invention, the 3D scanner may further include a power supply unit for supplying power to the tilt sensing unit, the first driving unit, the second driving unit, and the control unit.

At this time, the power supply unit may be a battery or a rechargeable battery.

In one embodiment of the present invention, the 3D scanner may further include a connection portion mounted on a binding portion between the anti-shake device and the 3D scanner, and capable of attaching and detaching the 3D scanner from the anti-shake device.

The connecting portion may be formed by a vacuum adsorption method, a velcro binding method, a bolting method, a hook binding method, a method using a permanent magnet, a method using an electromagnet, and a magnetic lift The 3D scanner and the anti-shake device can be bound to each other by one or more methods selected from the group consisting of the method of using the 3D scanner and the anti-shake device.

The present invention can also provide a method of modeling a valve box using the valve box modeling apparatus, wherein a method of modeling a valve box according to an aspect of the present invention includes: a) Inputting an absolute coordinate value of a plurality of reference points located inside and outside of the object and inputting a reference point coordinate value and a slope setting value for receiving a slope setting value of the 3D scanner from a user; b) point data generating step of generating point data by scanning a measurement object using a 3D scanner on the basis of an absolute coordinate value of a reference point; c) a matching step of matching the point data of each point of the measurement object with one point data; And d) a drawing information extracting step of extracting the 2D drawing information from the 3D point data.

In one embodiment of the present invention, the b) point data generation step may include a 3D scanning process of an external structure for a predetermined height of a measurement object using a 3D scanner on the basis of absolute coordinates of a plurality of reference points; And a 3D scanning process of the internal structure of the measurement object at predetermined heights.

In one embodiment of the present invention, the step (a) of inputting the reference point coordinate value and the slope setting value fixes the external structure 3D scanning data for each predetermined height of the measurement object generated through the point data generation step, The 3D structure data of each height is registered, the inside of the measurement object is divided into zones, the point data is matched for each zone, and the point data for each point of the measurement object is pasted It can be matched with one point data.

In one embodiment of the present invention, the a) the reference point coordinate value and the slope setting value input step may include a step of selecting one of the shape types of the measurement object previously stored in the control unit, measuring at least three specific dimensions of the measurement object, The absolute coordinate values of a plurality of reference points located inside and outside of the reference point can be input.

As described above, according to the valve box modeling apparatus of the present invention, by providing the anti-shake device, the input unit, the tilt sensing unit, and the control unit having a specific structure, it is possible to accurately and easily measure the inner and outer dimensions according to the shape of the measurement object And a valve box modeling device capable of extracting the drawing information based on the measured data can be provided.

Further, according to the valve box modeling apparatus of the present invention, by providing the X-ray measuring device capable of scanning the internal shape of the measurement object, the inner and outer dimensions can be accurately and easily measured according to the shape of the measurement object.

Further, according to the valve box modeling device of the present invention, by providing the anti-shake device including the upper rotation binding link, the lower rotation binding link, the first link and the second link, the first driving portion and the second driving portion having a specific structure, It is possible to provide a valve box modeling device that can accurately and easily measure the inside and outside dimensions according to the shape type of the measurement object.

Further, according to the valve box modeling apparatus of the present invention, since the power supply unit and the connection unit having a specific structure are provided, the portability is simple and the measurement preparation operation can be performed more easily, A valve box modeling device can be provided.

According to the valve box modeling method of the present invention, by including a) a reference point coordinate value and a slope set value input step, b) a point data generating step, c) a matching step, and d) It is possible to provide a valve box modeling method which can accurately and easily measure the inside and outside dimensions according to the shape type of the object and can extract the drawing information based on the measured data.

Further, according to the valve box modeling method of the present invention, accuracy can be ensured by providing reference points on the inside and outside of a measurement object and securing position coordinates by measuring the reference points.

According to the valve box modeling method of the present invention, the interior of the measurement object is divided into zones, the point data is matched for each zone, and the point data of the zone and the adjacent zone are matched to extract the accurate 2D drawing information of the measurement object .

1 is a perspective view showing a valve box modeling apparatus according to an embodiment of the present invention.
2 is a front view showing the valve box modeling apparatus shown in Fig.
3 is a right side view showing the valve box modeling apparatus shown in Fig.
4 is a left side view showing the valve box modeling apparatus shown in Fig.
5 is a perspective view showing the first link and the second link of the anti-shake device shown in Fig.
FIG. 6 is a perspective view showing a state in which the inclination of the 3D scanner is changed by driving the first driving unit shown in FIG. 5. FIG.
7 is a perspective view showing a state in which the inclination of the 3D scanner is changed by driving the second driving unit shown in FIG.
8 is a perspective view showing a valve box modeling apparatus according to another embodiment.
9 is a flowchart illustrating a method of modeling a valve box according to an embodiment of the present invention.
FIG. 10 is a schematic view showing a state in which a measurement object is scanned using a valve box modeling method according to an embodiment of the present invention.
11 is a schematic diagram showing a reference point and a point data coordinate on the measurement object shown in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. Prior to the description, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and should be construed in accordance with the technical concept of the present invention.

Throughout this specification, when a member is "on " another member, this includes not only when the member is in contact with another member, but also when there is another member between the two members. Throughout this specification, when an element is referred to as "including" an element, it is understood that it may include other elements as well, without departing from the other elements unless specifically stated otherwise.

FIG. 1 is a perspective view showing a valve box modeling apparatus according to an embodiment of the present invention, and FIGS. 2 to 4 show a front view, a right side view, and a left side view, respectively, of the 3D scanner shown in FIG. 1 have.

5 is a perspective view showing the first link and the second link of the anti-shake device shown in Fig. 1. Fig. 6 is a perspective view showing a state in which the inclination of the 3D scanner is changed by driving the first driving unit shown in Fig. And FIG. 7 is a perspective view illustrating a state in which the inclination of the 3D scanner is changed by driving the second driving unit shown in FIG.

Referring to these figures, the valve box modeling apparatus 100 according to the present embodiment includes an anti-shake device (not shown) mounted on one side of the 3D scanner 101 to maintain the tilt of the 3D scanner 101 at a predetermined tilt value The 3D scanner includes the input unit 140, the tilt sensing unit 110, and the control unit 120 having a specific structure. The internal and external dimensions can be accurately and easily measured according to the shape of the measurement object, It is possible to provide a 3D scanner capable of extracting the drawing information based on the measured data.

Hereinafter, each constitution of the valve box modeling apparatus 100 according to the present embodiment will be described in detail.

The input unit 140 according to the present embodiment can be mounted on one side of the anti-shake device 102. [ At this time, the input unit 140 can receive the absolute coordinate values of a plurality of reference points located on the inside and outside of the measurement object 10 and the type of the shape of the measurement object 10 from the user. Also, the input unit 140 can receive the tilt setting value of the 3D scanner 101 from the user.

The inputted values are used as reference data for controlling the anti-skid device 102 to prevent the operator from shaking the position of the 3D scanner 101. [

The tilt sensing unit 110 may be mounted on one side of the 3D scanner 101 to sense the inclination of the 3D scanner 101 and transmit the sensed tilt data to the controller 120. [

At this time, the tilt sensing unit 110 may include a gyroscope sensor. The tilt sensor 110 senses the tilt of the 3D scanner 101 using a gyroscope sensor and transmits the sensed tilt data to the controller 120. [

The control unit 120 according to the present embodiment is incorporated in the anti-shake device 102 and can control the operation of the 3D scanner 101 based on input values input from the input unit 140. [

The control unit 120 according to the present embodiment acquires the measurement data from the 3D scanner 101 and calculates the tilt correction angle and angular velocity of the 3D scanner 101 based on the tilt data received from the tilt sensing unit 110. [ And the operation of the anti-shake device 102 can be controlled.

The 3D scanner 101 according to the present embodiment is an apparatus for scanning the external shape of the measurement object 10 using a laser and is capable of scanning an internal shape of the measurement object 10 with an X- And a measurement device. In this case, the internal structure of the measurement object 10 can be measured. A detailed description thereof will be given later.

The anti-shake device 102 according to the present embodiment includes the first link 131 and the second link 132 having a specific structure, thereby preventing the 3D scanner from shaking or trembling by the operation of the operator, So that more accurate scanning data can be obtained.

Specifically, the first link 131 and the second link 132 according to the present embodiment are configured such that the upper rotation binding link 134-1 and the lower rotation binding link 134 -2), respectively, in the hinge structure.

At this time, the upper rotation binding link 134-1 can mount the 3D scanner 101. Further, the lower rotation binding link 134-2 is located in a direction orthogonal to the upper rotation binding link and is spaced from the upper rotation binding link by a predetermined distance, and the handle can be mounted.

The first driving portion 131-1 is mounted on the binding portion between the upper rotating binding link 134-1 and the first link 131 and the lower rotating binding link 134-2 and the first link 131 are mounted on the binding portion between the upper rotating binding link 134-1 and the first link 131, The second driving part 132-1 may be mounted on the binding part of the second driving part 132-1. Here, the first driving unit 311 and the second driving unit 321 are not particularly limited as long as they can be driven by a control signal of the controller 102, and may be a servo motor.

1 to 7, the 3D scanner 101 according to the present embodiment includes a tilt sensing unit 110, a first driving unit 131-1, a second driving unit 132-1 And a power supply unit 160 for supplying power to the controller 120. [ At this time, the power supply unit 160 may be a battery or a rechargeable battery.

FIG. 8 is a perspective view showing a 3D scanner according to another embodiment.

8, the valve box modeling apparatus 100 according to the present embodiment is mounted on the binding site of the anti-shake device 102 and the 3D scanner 101, and the 3D scanner 101 is mounted on the anti- And a connecting portion 150 for allowing the connecting portion 150 to be detached and attached from the connecting portion 102.

At this time, the connecting portion 150 is not particularly limited as long as it is a member that enables the 3D scanner 101 to be detachably attached to the anti-shake device 102. For example, a vacuum adsorption method, a velcro binding method, The 3D scanner 101 is configured by at least one method selected from the group consisting of a bolting method, a hook binding method, a method using a permanent magnet, a method using an electromagnet, and a method using a magnetic lift. And the anti-shake device 102 to each other.

As described above, the valve box modeling apparatus 100 according to the present embodiment includes the anti-shake device 102, the input unit 140, the tilt sensing unit 110, and the control unit 120 having the specific structure It is possible to easily carry out the measurement work on the measurement object irrespective of the skill of the operator and at the same time to prevent the measurement error from occurring due to the shaking and to obtain the reliable measurement value.

FIG. 9 is a flowchart illustrating a 3D scanner operation method according to an embodiment of the present invention. FIG. 10 is a schematic diagram illustrating a method of scanning a measurement object using a 3D scanner operation method according to an embodiment of the present invention. And FIG. 11 is a schematic diagram showing a reference point and a point data coordinate on the measurement object shown in FIG.

Referring to these drawings, a valve box modeling method (S100) according to the present embodiment includes inputting a reference point coordinate value and a slope setting value (S110), a point data generating step (S120), a matching step (S130) And a drawing information extracting step (S140).

Specifically, the reference point coordinate value and slope setting value input step (S110) receives the absolute coordinate values of a plurality of reference points located on the inside and outside of the measurement object 10 and the type of the object 10 to be measured from the user, And receiving a slope setting value of the 3D scanner.

The type of the object to be measured can be stored in the control unit according to the present embodiment. For example, a general shape of the valve box can be stored for each type, and the type of the object to be measured can be input by the user's selection.

As shown in Fig. 10, when selecting the square pillar-shaped valve box shape type, three points (P1, P2, P3) on the bottom face and one point P4 on the uppermost point can be set as reference points. At this time, after inputting the absolute coordinate values of the initial reference point P1, relative coordinate values between the remaining three points P2, P3, and P4 are measured using the 3D scanner 101, The absolute coordinate values of the reference points P1, P2, P3, and P4 can be set.

In Fig. 10, only the square pillar shape is mentioned. In the case of the cylindrical valve box shape, the center of the bottom surface, the line segment corresponding to the diameter of the bottom surface, and the center of the top surface may be the reference points. It goes without saying that the reference point setting can be variously set according to the user's intention and convenience.

At this time, the user can set the slope setting value of the 3D scanner in consideration of the separation distance and the separation position between the 3D scanner 101 and the measurement object 10, and then input the slope setting value to the input unit 140.

The control unit 120 calculates the tilt correction angle and the angular velocity of the 3D scanner 101 based on the input tilt setting value and the tilt data received from the tilt sensing unit 110 so that the operation of the anti- So that the inclination of the 3D scanner 101 can be maintained.

10 and 11, the point data generating step S120 is a step of scanning the measurement object 10 using the 3D scanner 101 on the basis of the absolute coordinate value of the reference point to generate point data to be.

Specifically, the point data generation step S120 is a step of generating point data S120 by using the 3D scanner 101 on the basis of the absolute coordinate values of the plurality of reference points P1, P2, and P4, H2, H3, H4, H5 and H6 of the measurement object 10 and the internal structure 3D scanning process of the internal structure 3D of the measurement object 10 according to preset heights H1, H2, H3, H4, H5 and H6 S122). ≪ / RTI > 11, a plurality of point data P11 to P13, P21 to P27, P32 to P37, and P42 to P47 for the predetermined height H1, H2, H3, H4, H5, and H6, , P52 to P57, P61). Specifically, a plurality of point data mentioned above can be obtained by performing point scanning of a target scheme with respect to each vertex or an intermediate point forming the outer shape of the measurement object 10, and the accuracy of data matching can be obtained using the target .

The matching step (S130) is a step of pasting point data for each point of the measurement object 10 and matching them to one point data.

H3, H4, H5, and H6) of the measurement object 10 generated through the point data generation step S120 can be fixed, Dimensional object 3D data can be matched by dividing the interior of the measurement object 10 into zones and matching point data for each zone and matching the point data of the zone and the adjacent zone, Point data can be added to the point data of one point.

11, a plurality of point data (P11 to P13, P21 to P27, P32 to P37, P42) measured by predetermined height (H1, H2, H3, H4, H5, H6) P47, P52 to P57 and P61 are matched with the point data P12, P24, P34, P44, P54 and P61 arranged along the imaginary center line of the measurement target 10, The data can be arranged correctly.

10, the interior of the measurement object 10 is divided into zones 11, 12, and 13, point data is matched to the zones 11, 12, and 13, The 2D drawing information can be extracted by matching the point data of the adjacent area.

The scanning data of the object to be measured can be acquired more accurately based on the point data for each height arranged by this method.

The drawing information extraction step may be performed by extracting the 2D drawing information from the 3D point data acquired through the above-mentioned series of processes.

Specifically, the 3D object can be modeled from the 3D point data using the Workstation PC and Auto CAD, and the 2D drawing information can be extracted from the 3D object modeling.

As described above, according to the valve box modeling method (S100) according to the present embodiment, a) a reference point coordinate value and slope setting value input step (S110), b) point data generating step (S120), c ) Matching step (S130) and d) drawing information extracting step (S140), it is possible to accurately and easily measure the inner and outer dimensions according to the shape type of the measurement object and to extract the drawing information based on the measured data To provide a method of operating a 3D scanner.

In the foregoing detailed description of the present invention, only specific embodiments thereof have been described. It is to be understood, however, that the invention is not to be limited to the specific forms thereof, which are to be considered as being limited to the specific embodiments, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. .

That is, the present invention is not limited to the above-described specific embodiment and description, and various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims. And such variations are within the scope of protection of the present invention.

10: object to be measured
100: Valve box modeling device
101: 3D Scanner
102: Anti-shake device
110: tilt detection unit
120:
131: first link
131-1:
132: second link
132-1:
133: Handle portion
134-1: Upper rotation binding link
134-2: lower rotation binding link
140: Input unit
141: input device
142: Screen
150:
160: Power supply
S100: Valve box modeling method
S110: Entering the reference point coordinate value and the slope setting value
S120: Point data generation step
S130: matching step
S140: drawing information extraction step

Claims (13)

An anti-shake device (102) mounted on one side of a 3D scanner (101) to maintain a tilt of a 3D scanner (101) at a predetermined tilt value,
(102) and receives the absolute coordinate values of a plurality of reference points located on the inside and the outside of the measurement object (10) from the shape of the measurement object (10) from the user, An input unit 140 for receiving a tilt setting value of the tilt sensor 101;
A tilt sensing unit 110 mounted on one side of the 3D scanner 101 to sense the tilt of the 3D scanner 101 and transmit the sensed tilt data to the controller 120;
The operation of the 3D scanner 101 is controlled based on the input value input from the input unit 140 to acquire measurement data from the 3D scanner 101. The tilt detection unit A controller 120 for calculating the tilt correction angle and angular velocity of the 3D scanner 101 based on the tilt data received from the tilt sensor 110 to control the operation of the anti-shake device 102; And
The valve box modeling apparatus 100 includes a connection portion 150 (not shown) which is mounted on a binding portion between the anti-shake device 102 and the 3D scanner 101 and which enables the 3D scanner 101 to be detached from the anti- );
Lt; / RTI >
The connecting portion 150 may be formed by a vacuum adsorption method, a velcro binding method, a bolting method, a hook binding method, a method using a permanent magnet, a method using an electromagnet and a magnetic lift, And the 3D scanner (101) and the anti-shake device (102) are bound to each other by one or more methods selected from the group consisting of a method using the anti-shake device (102).
The method according to claim 1,
The 3D scanner 101 is an apparatus for scanning an external shape of an object to be measured by using an optical method, and further includes an X-ray measuring device capable of scanning the internal shape of the object to be measured 10 Valve box modeling device.
The method according to claim 1,
The anti-shake device (102)
An upper rotation binding link 134-1 for mounting the 3D scanner 101;
A lower rotation binding link 134-2 located in a direction perpendicular to the upper rotation binding link and spaced from the upper rotation binding link by a predetermined distance and mounting the handle;
A first link 131 and a second link 132 bound to the hinge structure by the upper rotation binding link 134-1 and the lower rotation binding link 134-2, respectively;
A first driving part 131-1 mounted on a binding part between the upper rotation binding link 134-1 and the first link 131;
A second driving part 132-1 mounted on the binding part between the lower rotation binding link 134-2 and the first link 131;
Wherein the valve modeling device comprises:
The method according to claim 1,
Wherein the tilt sensing part (100) is a gyroscope sensor.
The method of claim 3,
Wherein the first driving part (311) and the second driving part (321) are servomotors.
The method of claim 3,
The valve box modeling apparatus 100 includes a tilt sensing unit 110, a first driving unit 131-1, a second driving unit 132-1 and a power supply unit 160 for supplying power to the control unit 120 Further comprising: a valve body having a valve body;
The method according to claim 6,
Wherein the power supply unit (160) is a dry cell or a secondary battery capable of charging and discharging.
delete delete 8. A method of operating a valve box modeling device according to any one of claims 1 to 7,
a) inputting the absolute coordinate values of the plurality of reference points located in the inside and outside of the measurement object 10, the shape type of the measurement object 10 from the user, receiving the reference point coordinate value and slope setting A value input step (S110);
b) point data generation step (S120) of generating point data by scanning the measurement object (10) using the 3D scanner (101) based on the absolute coordinate value of the reference point;
c) a matching step (S130) of adding the point data of each point of the measurement object 10 to one point data; And
d) a drawing information extracting step (S140) of extracting 2D drawing information from the 3D point data;
(S100). ≪ / RTI >
11. The method of claim 10,
The b) point data generation step (S120)
An external structure 3D scanning process (S121) of a predetermined height of the measurement object 10 using a 3D scanner on the basis of an absolute coordinate value of a plurality of reference points; And
An internal structure 3D scanning process (S122) for each predetermined height of the measurement object 10;
And performing a point scanning of the target junction method including the step of performing point scanning.
12. The method of claim 11,
The a) the reference point coordinate value and the slope setting value input step (S110)
The external structure 3D scanning data for each predetermined height of the measurement object 10 generated through the point data generation step S120 is fixed,
Matching the internal structure 3D scanning data by the predetermined height,
The inside of the measurement object 10 is divided into zones, point data is matched for each zone,
Wherein point data of each point of the measurement object (10) is pasted in such a manner as to match point data of a region and an adjacent region, and is matched to one point data.
12. The method of claim 11,
The a) a reference point coordinate value and a slope setting value input step (S110) is a step of selecting one of the types of shape of the measured object 10 previously stored in the control unit, measuring at least three specified dimensions of the measured object 10, Wherein the absolute coordinate values of a plurality of reference points located inside and outside of the valve body (10) are input.

Images