KR20130090023A - Apparatus of sensing dynamic motion using change of laser beam by curvature - Google Patents

Apparatus of sensing dynamic motion using change of laser beam by curvature Download PDF

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Publication number
KR20130090023A
KR20130090023A KR1020120011037A KR20120011037A KR20130090023A KR 20130090023 A KR20130090023 A KR 20130090023A KR 1020120011037 A KR1020120011037 A KR 1020120011037A KR 20120011037 A KR20120011037 A KR 20120011037A KR 20130090023 A KR20130090023 A KR 20130090023A
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South Korea
Prior art keywords
laser beam
case
ball
receiver sensor
change
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KR1020120011037A
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Korean (ko)
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김덕후
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김덕후
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Priority to KR1020120011037A priority Critical patent/KR20130090023A/en
Publication of KR20130090023A publication Critical patent/KR20130090023A/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
    • G01B11/167—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by projecting a pattern on the object
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/12—Detecting, e.g. by using light barriers using one transmitter and one receiver
    • G01V8/14—Detecting, e.g. by using light barriers using one transmitter and one receiver using reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/002—Arrays of reflective systems

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Optics & Photonics (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The present invention proposes a dynamic motion sensing device using a change in the laser beam due to a simple curvature, no inconvenience to use, active in various applications, and fast response speed. The apparatus includes a laser diode located on one side of the case and generating a laser beam, and a receiver sensor receiving the laser beam and positioned on the other side of the case so as to be spatially separated from the converter for converting the path of the laser beam using the bearing portion. It includes.

Description

Apparatus of sensing dynamic motion using change of laser beam by curvature}

The present invention relates to a device for detecting dynamic movement, and more particularly, by using a change in the laser beam due to the direct or indirect influence of an object having a curvature such as a ball, in particular, by recognizing a three-dimensional moving three-dimensional movement It relates to a device for detecting this.

Methods of detecting and using an object or a human body are being implemented in various forms. For example, it has been applied in various ways such as a vibration sensor for detecting the vibration of an object, a three-dimensional pointing device for selecting an object on the display screen by a three-dimensional pointing technique, an acceleration sensor for measuring the instantaneous acceleration. As such, the movement is approached using many sources such as magnetic force and optical path change. Among them, the optical implementation is attracting much attention because of its non-contact and relatively high stability of the source.

A laser beam, on the other hand, is light with only one type of wavelength and is continuous light with a uniform phase. That is, it has the characteristics of line spectrum with even phase and very narrow width, and has good coherence and straightness. Due to these characteristics, the laser beam region has a random pattern due to the interference of light. In the meantime, there have been many attempts to grasp the dynamic motion by using the characteristics of the laser beam. Specifically, efforts to detect dynamic movement of an object or a human body through the use of an imaging system, the addition of sensors having different functions, the use of optical fibers, and the optical path change between the laser beam and the receiving sensor are continuing.

However, the conventional dynamic motion detection apparatus using a laser beam is inconvenient to use because of its complicated structure, its use is limited to a pointer, and the like, and some have a problem in that the relative response speed is slow. Accordingly, there is no difficulty in using a simple structure, and there is a need for a sensing device that can be utilized in a wide range.

The problem to be solved by the present invention is to provide a dynamic motion detection apparatus using a simple structure, the inconvenience is not inconvenient to use, is utilized in various applications, the path change of the laser beam by the curvature with a fast response speed. .

One example of the dynamic motion detection apparatus using the change of the laser beam by the curvature of the present invention for solving the above problems includes a case and a laser diode for generating a laser beam on one side of the case. The apparatus may further include a converter converting a path of the laser beam by using up, down, left, and right rotational movements of a bearing part. Located on the other side of the case so as to be spaced apart from the converter, and comprises a receiver sensor for receiving the laser beam.

In one example of the present invention, the bearing part is fixed to the case, which may be made of an outer ball that rotates up and down and left and right and an inner ball that is partially covered by the outer ball. In this case, the laser diode may be located at the center of the inner ball or the center of the outer ball. Further, the laser diode is moved in the open portion of the outer ball, the outer ball is preferably opened by an angle larger than 50 degrees and smaller than 90 degrees.

In one example of the present invention, the method may further include at least one reflector forming a path for sending the laser beam passing through the converter to the receiver sensor. In this case, the reflecting surface of the reflector may be a horizontal surface or an inclined surface or a mixture thereof.

Another example of the dynamic motion detection apparatus using the change of the laser beam by the curvature of the present invention for solving the above problems includes a case and a laser diode for generating a laser beam on one side of the case. The apparatus may further include a receiver sensor located at the other side of the case so as to be spaced apart from the laser diode and receiving the laser beam. And a converter configured to convert the path of the laser beam by using a distance change between the rotating plate and the case positioned between the laser diode and the receiver sensor and being horizontal to the ground.

In another sensing device of the present invention, the rotary plate is placed on the rotary weight, wherein the rotary weight is a ball of the spherical shape that allows the rotary wheel to rotate up and down and left and right, and the ball to support the rotating plate It may be made of a pillar for limiting the distance and the support portion fixed to the case and to limit the movement of the rotating plate together with the pillar.

In the other device, the rotating plate preferably forms an angle greater than 30 degrees and less than 60 degrees with the rotary weight when the sensing device is not tilted.

Another example of the dynamic motion detection apparatus using the change of the laser beam by the curvature of the present invention for solving the above problems includes a case, and a laser diode for generating a laser beam on one side in the case. In addition, located on the other side of the case so as to be spaced apart from the laser diode, and comprises a receiver sensor for receiving the laser beam. Located between the laser diode and the receiver sensor, and comprises a conversion unit for converting the path of the laser beam using the refraction of the laser beam by the lens.

At this time, the lens may be attached to the bearing portion consisting of the inner ball is rotated up and down and left and right, and the inner ball is partially covered with the outer ball. The lens may be attached to the center of the inner ball or the center of the outer ball.

According to the dynamic motion detection apparatus using the change of the laser beam by the curvature of the present invention, by detecting the change of the laser beam induced by the dynamic motion by the curvature, the structure is simple, there is no inconvenience to use, and various It is possible to implement a device that is active for a purpose and has a fast reaction rate.

1A is a schematic diagram illustrating an apparatus for detecting a dynamic motion using a path change of a laser beam due to curvature according to a first embodiment of the present invention.
FIG. 1B is a view showing the motion of the first converter when the device of FIG. 1A is tilted arbitrarily in space. FIG.
2A is a schematic diagram illustrating an apparatus for detecting a dynamic motion using a path change of a laser beam due to curvature according to a second embodiment of the present invention.
FIG. 2B is a view showing the motion of the second transform unit when the device of FIG. 2A is tilted arbitrarily in space. FIG.
3A is a schematic diagram illustrating a dynamic motion sensing apparatus using a path change of a laser beam due to curvature according to a third embodiment of the present invention.
FIG. 3B is a view showing the motion of the third converter when the device of FIG. 3A is tilted arbitrarily in space. FIG.
4A is a schematic diagram illustrating a dynamic motion sensing apparatus using a path change of a laser beam due to curvature according to a fourth embodiment of the present invention.
FIG. 4B is a view showing the motion of the fourth converter when the device of FIG. 4A is tilted arbitrarily in space. FIG.
FIG. 5A is a schematic diagram illustrating an apparatus for detecting dynamic motion using a pattern change of a laser beam due to curvature according to a fifth embodiment of the present invention.
FIG. 5B is a schematic diagram illustrating an implementation of the dynamic motion sensing device of FIG. 5A in the form of a pen.
6 is a view for explaining a three-dimensional pointing device according to an application example of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. The embodiments of the present invention are provided to enable those skilled in the art to more fully understand the present invention.

According to the embodiment of the present invention, a dynamic structure detects a change in a laser beam induced by curvature, and thus the structure is simple and hassle-free operation. Present a motion detection device. Here, the change of the laser beam is a concept including a path change of the laser beam or a pattern change of the laser beam. To this end, the case of inducing the path change of the laser beam by the movement of the bearing portion and the laser beam pattern change process will be described in detail through the apparatus proposed by the present invention. In addition, as an example of the dynamic motion detection apparatus using the laser beam of the present invention will be described in detail the three-dimensional pointing device for selecting the object on the display screen.

Here, the first device 100 to the fourth device 400 relates to a dynamic motion detection device using a path change of a laser beam, and the fifth device 500 is a dynamic motion detection device using a pattern change of a laser beam. It is about.

 FIG. 1A is a schematic diagram illustrating a dynamic motion detecting apparatus 100 (hereinafter referred to as a first apparatus) using a path change of a laser beam caused by a bearing according to a first embodiment of the present invention. FIG. 1B is a diagram illustrating the movement of the first converter 105 when the first device 100 of FIG. 1A is tilted arbitrarily in space. At this time, the first device 100 is an example implemented using a bearing that rotates vertically and horizontally with respect to the ground.

1A and 1B, the first device 100 of the present invention includes a first converter 105 and LD (including a laser diode 30 (LD)) on one side of a case 10. And a receiver sensor 20 that finally receives the laser beam emitted from 30 and at least two reflectors 130 and 132 forming a path for sending the laser beam to the receiver sensor 20. In this case, the first converter 105 including the LD 30 and the receiver sensor 20 are spatially separated by a predetermined interval. The interval is set such that the laser beam passing through the reflectors 130 and 132 can be detected by the receiver sensor 20 by the movement of the first device 100 of the present invention.

The first conversion unit 105 of the present invention is attached to the case 10 by the fixing unit 110, and uses the vertical and horizontal rotational movement of the bearing. The bearing part 110 is fixed to the fixing part 140 and is surrounded by the outer ball 111 and the outer ball 111 that rotate up and down and left and right, and a part of the inner ball exposed in the direction of the reflector 120 ( 112). At this time, the center ball 112 is the center of gravity toward the ground, do not follow the movement of the case (10). Accordingly, the outer ball 111 is to move up and down and rotate relative to the inner ball (112). The shape of the inner ball 112 and the outer ball 111 applied to the present invention is various. In other words, the outer ball 111 and the inner ball 112 may be a spherical shape, or may be a ring-shaped ring shape.

The outer ball 111 moves in the same direction as the case 10, and the inner ball 112 does not respond to the movement of the outer ball 111. In addition, when the first device 100 of the present invention is not tilted, the LD 30 which generates a laser beam in the ground direction at the center of the inner bowl 112 exposed to the outside of the outer bowl 111 with respect to the ground. Is inserted into the LD support 120. Here, the center of the inner bowl 112 refers to a place located in the middle on the arc from both open ends of the outer bowl 111.

The LD 30 is substantially fixed and does not move, but relatively moves relative to the movement of the outer shell 111, the movement of which is limited by the open degree of the outer shell 111 and the LD support 120. . Specifically, the LD 30 is moved within an angle θ between the center of the inner bowl 112 and the open end of the outer bowl 111, and the limit of the moving distance is the arc support 120 in the shape of an arc. The open end of the one side and the outer shell 112 and the distance (L) is twice. Although the angle θ is shown in a plan view, it is obvious that the angle θ will be an open angle in a conical shape. The angle θ is preferably larger than 50 degrees and smaller than 90, and may be set differently in some cases.

At least two reflectors 130 and 132 of the present invention, in which the reflector 130 moves in the same direction as the case 10 with respect to the outer ball (111). In other words, the movement of the reflector 130 of the present invention is defined with respect to the movement of the outer shell 111. There is a need for one reflector that reflects a laser beam at a predetermined angle and at least one reflector that allows the reflected laser beam to reach the receiver sensor 20. In the drawing, one reflector installed below the first converter 105 based on the ground is referred to as reference numeral 130 and a reflector for accommodating the laser beam reflected by the reflector 130 is referred to as reference numeral 132. At least one reflector is represented as one reflector for convenience of description.

The reflecting surface of the reflector 130 is inclined so that the laser beam irradiated from the LD 30 is reflected at a predetermined angle. In this case, the inclination degree may vary depending on the shape of the first device 100. The reflecting surface of the reflector 132 may be horizontal to the ground when the first device 100 is not tilted, or may be inclined at a constant level. In some cases, all reflective surfaces of the reflector 132 may be horizontal or inclined, and the horizontal and inclined states may be combined according to the design of the laser beam path. This is because the reflector 132 of the present invention should allow the laser beam generated by the LD 30 to be detected by the receiver sensor 20 in response to the tilt of the user.

When the user arbitrarily tilts the first device 100 with respect to the ground in space, the outer ball 111 of the first conversion unit 105 is rotated corresponding to the inclination, so that the laser beam generated by the LD 30 is generated. The point of reaching the reflector 130 is different. Here, the user may be a person or may be a specific object, for example a machine. Specifically, if the reflector 130 lies horizontally with respect to the ground, the laser beam reaches point a1 of the reflector 130, but if the reflector 130 is tilted relative to the ground, the laser beam reaches point a2 of the reflector 130 Is incident on. On the other hand, since the laser beams reflected from the a1 point and the a2 point proceed through different paths, they are detected at different positions of the receiver sensor 20. Using this principle, even if the user tilts the first device 100 arbitrarily in space, the receiver 20 may detect the change by the path of the laser beam.

In the first device 100 of the present invention, an example in which the reflectors 130 and 132 are provided is provided. However, in some cases, the LD 30 may be directly directed toward the receiver sensor 20 without the reflectors 130 and 132. You may. In this case, the dynamic movement can be detected by the position detected by the receiver 20 by the LD 30. For example, the bearing unit 110 may be installed so that the LD 30 of the first converter 105 faces the receiver sensor 20.

FIG. 2A is a schematic diagram illustrating a dynamic motion detecting apparatus 200 (hereinafter referred to as a second apparatus) using a path change of a laser beam by a bearing according to a second embodiment of the present invention. FIG. 2B is a diagram illustrating the movement of the second converter 205 when the second device 200 of FIG. 2A is tilted arbitrarily in space. At this time, the second device 200 is another example implemented using a bearing that rotates up, down, left and right simultaneously with respect to the ground, and the second converter 205 is the first converter 105 of the first device 100. ) Is implemented in a different structure. Accordingly, since the case 10, the receiver sensor 20, the LD 30, the reflectors 230 and 232, and the bearing unit 210 have the same function and role as the first device 100, the description thereof will be described. It will be omitted.

2A and 2B, the second device 200 of the present invention finally receives the laser beam emitted from the second conversion unit 205 including the LD 30 and the LD 30 on one side of the case 10. And at least two reflectors 230 and 232 forming a path for transmitting the receiver sensor 20 and the laser beam to the receiver sensor 20. At this time, the second converter 205 including the LD 30 and the receiver sensor 20 are spatially separated by a predetermined interval. The interval is set such that the laser beam passing through the reflectors 230 and 232 can be detected by the receiver sensor 20 by the movement of the second apparatus 200 of the present invention.

The second conversion unit 205 of the present invention is attached to the case 10 by the fixing unit 240, and uses the vertical and horizontal rotation of the bearing. The bearing part 210 is rotated up and down and left and right and is partially surrounded by an outer ball 211 and an outer ball 211 open in the direction of the fixing part 240, and a spherical shape fixed to the fixing part 240. Cabinet ball 212 is made of. At this time, the outer ball 211 is moved in the same direction as the case 10, the inner ball 212 is fixed to the case 10 does not move. In addition, when the second device 200 of the present invention is not inclined, an LD 30 for generating a laser beam in the ground direction is inserted into the LD support 220 at the center of the lower portion of the outer bowl 211 with respect to the ground. have. Here, the center of the lower portion of the outer ball 211 is opposed to the middle position on the arc from both open ends of the outer ball 211, the outer ball 211 refers to the direction toward the reflector 230.

The movement of the LD 30 is limited by the openness of the outer ball 211 and the fixing part 240. Specifically, the LD 30 is moved within an angle θ between the center of the inner ball 212 and the open end of the outer ball 211, and the limit of the moving distance is fixed to the arc 240. The open end of the one side and the outer shell 211 and the distance (L) is twice. Although the angle θ is shown in a plan view, it is apparent that the angle θ is a conical open angle in a three-dimensional manner. The angle θ is preferably greater than 20 degrees and smaller than 90, and may be set differently in some cases.

When the user arbitrarily tilts the second device 200 with respect to the ground in space, the outer ball 211 rotates corresponding to the inclination so that the laser beam generated from the LD 30 reaches the reflector 230. The point is different. Here, the user may be a person or may be a specific object, for example a machine. Specifically, if the reflector 230 lies horizontally with respect to the ground, the laser beam reaches point b1 of the reflector 230, but if the reflector 230 is tilted with respect to the ground, the laser beam reaches point b2 of the reflector 230 Is incident on. On the other hand, since the laser beam reflected from the b1 point and the b2 point passes through different paths, the laser beams are detected at different positions of the receiver sensor 20. Using this principle, even if the user tilts the second device 200 arbitrarily in space, the receiver sensor 20 may detect the change by the change of the path of the laser beam.

On the other hand, in the second device 200 of the present invention, the case where the reflectors 230 and 232 are provided, but in some cases, the receiver 30 directly to the LD 30 without the reflectors 230 and 232. You can also face. In this case, the dynamic movement can be detected by the position detected by the receiver 20 by the LD 30. For example, the bearing unit 210 may be installed so that the LD 30 of the second converter 205 faces the receiver sensor 20.

3A is a schematic diagram illustrating a dynamic motion sensing apparatus 300 (hereinafter referred to as a third apparatus) using a path change of a laser beam by a bearing according to a third embodiment of the present invention. FIG. 3B is a diagram illustrating the movement of the third converter 305 when the third apparatus 300 of FIG. 3A is tilted arbitrarily in space. At this time, the third device 300 is an example implemented using a rotary weight to rotate up and down and left and right relative to the ground. Accordingly, since the case 10, the receiver sensor 20, and the LD 30 have the same function and role as the first device 100, a description thereof will be omitted.

3A and 3B, the third device 300 of the present invention is located on one side of the case 10, and the LD 30 is fixed to the LD support 310 so that the third converting unit ( 305 to irradiate the laser beam. In addition, the lower part of the case 10 with respect to the ground includes a third converter 305 for changing the path of the laser beam, and a receiver sensor 20 for finally receiving the laser beam emitted from the LD (30). . In this case, the third converter 305 and the receiver sensor 20 are spatially separated by a predetermined interval. The interval is set to be in an area where the receiver sensor 20 can detect all the laser beams that have passed through the third converter 305 by the movement of the third device 300 of the present invention.

The third conversion unit 305 of the present invention is attached to the lower case 10 with respect to the ground, and uses the vertical and horizontal rotational movement relative to the rotary plate 320. The relative movement to the rotating plate 320 means that there is no movement of the rotating plate 320, but the movement is determined according to the movement of the rotary weight 330. To this end, the upper surface of the rotating plate 320 is to reflect the laser beam, regardless of the inclination of the third device 300, the upper surface is always horizontal with respect to the ground.

Rotating weight 330 is a ball (331) of the spherical shape to allow the rotary weight 330 to rotate up and down and to the left and right, a column for supporting the ball 331 and limiting the distance to the rotating plate 320 ( 332 and the support 10 which is fixed to the case 10 and limits the relative distance of the rotating plate 320 together with the pillar 332. The rotary weight 330 is inclined in the same direction as the case 10, and the rotary plate 320 is always horizontal to the ground regardless of the tilt of the rotary weight 330. Here, it can be seen that the rotary weight 330 has substantially the same function as the bearing portion in the first and second devices (100, 200) of the present invention.

When the third device 300 is not inclined, the support part 333 and the rotating plate 320 are set such that the initial angle is θ1. The motion of the LD 30 is limited by the initial angle θ1. Although the angle θ1 is shown in a plan view, it is apparent that the angle θ1 may be applied in a three-dimensional space. The angle θ1 may be set differently according to circumstances. Rotating movement of the rotating plate 320 in up, down, left, and right directions may be similar to the concept that the outer ball moves relatively to the inner ball in the first and second devices of the present invention.

When the user arbitrarily tilts the third device 300 with respect to the ground in space, the rotating plate 320 is inclined corresponding to the inclination so that the laser beam generated from the LD 30 reaches the rotating plate 320. This is different. Here, the user may be a person or may be a specific object, for example a machine. Specifically, if the third device 300 lies horizontally with respect to the ground, the laser beam reaches point c1 of the rotating plate 320, but if the third device 300 is tilted with respect to the ground, the laser beam is rotating plate 320 Incident at point c2). On the other hand, since the laser beam reflected from the c1 point and the c2 point proceeds through different paths, they are detected at different positions of the receiver sensor 20.

In other words, when the laser beam is incident on the c1 point of the rotating plate 320, the angle between the rotating plate 320 and the support part 333 forms θ1, but when the laser beam is incident on the c2 point, the angle between the rotating plate 320 and the supporting part 333 is increased. The silver plane forms θ2 on one side and θ3 on the opposite side. When the angle change on the plane is expanded and interpreted in space, the principle of detecting the dynamic movement by the third device 300 of the present invention will be clearly understood. Using this principle, even if the user tilts the third device 300 arbitrarily in space, the receiver 20 may detect the change by the path of the laser beam.

4A is a schematic diagram illustrating a dynamic motion detecting apparatus 400 (hereinafter referred to as a fourth apparatus) using a path change of a laser beam by a bearing according to a fourth embodiment of the present invention. FIG. 4B is a diagram illustrating the motion of the fourth converter 405 when the fourth device 400 of FIG. 4A is tilted arbitrarily in space. In this case, since the fourth device 400 is an example implemented by adding a lens to the bearing part of the first device 100, the fourth device 400 may apply the bearing part of the second device 200 in some cases. Accordingly, since the case 10, the receiver sensor 20, and the LD 30 have the same function and role as the first device 100, a description thereof will be omitted.

According to FIGS. 4A and 4B, the fourth device 400 of the present invention provides a path of a laser beam generated from the LD 30 and the LD 30 fixed by the LD support 410 to one side of the case 10. And a fourth sensor 405 for converting and a receiver sensor 20 for finally receiving the laser beam emitted from the LD 30. In this case, the fourth converter 405 including the LD 30, the LD 30, the fourth converter 405, and the receiver sensor 20 are spatially separated by a predetermined interval. The interval is set such that the laser beam passing through the fourth converter 405 is in an area in which the receiver sensor 20 can detect all the movements of the fourth device 400 of the present invention.

The fourth conversion unit 405 of the present invention is attached to the case 10 by the fixing unit 420, and uses the vertical and horizontal motion of the bearing and the refraction of the lens. The bearing part 430 is fixed to the fixing part 420 and is surrounded by an outer ball 431 and an outer ball 431 rotating up and down and left and right, and the inner part ball 432 is partially exposed. At this time, the cabinet ball 432 is the center of gravity toward the ground, do not follow the movement of the case 10. Accordingly, the outer ball 431 is moved up and down and rotate relative to the inner ball 432. On the other hand, the shape of the inner ball 432 and the outer ball 431 applied to the present invention is various. In other words, the inner ball 432 and the outer ball 431 may be a spherical shape, or may be a ring-shaped ring shape.

The outer ball 431 moves in the same direction as the case 10, and the inner ball 432 has a fixed motion irrespective of the movement of the case 10. In addition, when the fourth device 400 of the present invention is not inclined, the lens 440 is provided by the lens support 442 at the center of the inner bowl 432 exposed to the outside of the outer bowl 431 with respect to the ground. It is hanging. The movement of the LD 30 is limited by the openness of the outer ball 431 and the lens support 442. Since this has been described in detail through the first device 100, the description thereof will be omitted here.

When the user arbitrarily tilts the fourth device 400 with respect to the ground in space, the outer ball 431 of the fourth converter 405 is rotated corresponding to the inclination so that the laser beam generated by the LD 30 is generated. The point of reaching this receiver sensor 20 is different. Here, the user may be a person or may be a specific object, for example a machine. Specifically, if the receiver sensor 20 is placed perpendicular to the ground, the laser beam reaches point d1 of the receiver sensor 20, but if the receiver sensor 20 is tilted relative to the ground, the laser beam is received at the receiver sensor 20 Incident at the point d2.

The change in the position of the laser beam incident on the receiver sensor 20 is caused by the lens 440 of the fourth converter 405 due to the optical position change between the LD 30 and the lens 440. will be. On the other hand, since the laser beam reflected at the point d1 and d2 proceeds through different paths, they are sensed at different positions of the receiver sensor 20. Using this principle, even if the user tilts the fourth device 400 arbitrarily in space, the receiver sensor 20 may detect the change by the change of the path of the laser beam.

FIG. 5A is a schematic diagram illustrating a dynamic motion sensing apparatus 500 (hereinafter referred to as a fifth apparatus) using a pattern change of a laser beam due to curvature according to a fifth embodiment of the present invention. FIG. 5B is a schematic diagram illustrating an implementation of the dynamic motion sensing device of FIG. 5A in the form of a pen.

Referring to FIG. 5A, the fifth device 500 of the present invention has the following two characteristics. First, the laser beam reflected by the reflector 520 of the fifth device 500 is always detected at a specific position of the receiver sensor 20 regardless of the dynamic movement of the fifth device 500. That is, the position of the received laser beam that the receiver sensor 20 accepts is always the same. Second, the dynamic movement by the fifth device 500 is detected by a change in the laser beam pattern (image) received at a specific position of the receiver sensor 20. To this end, the LD 30 and the receiver sensor 20 fixed to the LD support 510 are preferably fixed as shown in the case 20 with the reflector 520 therebetween.

The position of the received laser beam received by the receiver sensor 20 is always the same. However, when viewed from the position of the receiver sensor 20, when the pattern of the beam that the laser beam enters the receiver sensor 20 is reflected on the reflector 520, the pattern of the beam is different depending on the position irradiated to the reflector 520. Since it changes and enters the receiver sensor 20, the receiver sensor 20 compares the position and speed of the mouse with the pattern of the beam previously input to find the coordinates of the mouse.

As described above, the reflector 520 is sufficient to form a curved surface where the laser beam touches. The portion where the laser beam of the reflector 520 touches may have various shapes forming a curved surface. In other words, the surface to which the laser beam of the reflector 520 of the fifth apparatus 500 of the present invention comes into contact is a spherical surface having a constant curvature, a part of which is a spherical surface having a constant curvature, and the other is an aspherical surface of which the curvature changes, or the aspheric surface as a whole. Can be. Accordingly, the reflector 520 may be a spherical shape or the portion hit by the laser beam may be a spherical shape or an ellipsoid. A portion of the reflector 520 exposed out of the case 20 is for manipulation by a user's finger, and may match the shape of the user's finger.

According to FIG. 5B, the pen-type dynamic motion sensing device is located inside the pen 550 and the pen 550 and is irradiated by the LD 30 and the LD 30 fixed by the LD support 552. It includes a reflector 554 for reflecting the beam and a receiver sensor 20 for receiving the laser beam reflected by the reflector 554. The surface of the reflector 520 that the laser beam touches may form a spherical surface having a constant curvature, a part of which may be a spherical surface having a constant curvature, and the other may be an aspherical surface in which the curvature changes, or may be an aspheric surface as a whole. Accordingly, the reflector 520 may be a spherical shape or the portion hit by the laser beam may be a spherical shape or an ellipsoid.

In addition, the curvature of the reflector 554 may be determined by comparing the distance that the position change of the laser beam on the reflector 554 moves on the actual display screen. That is, when the magnitude of curvature is larger than that of the small curvature, the movement of the cursor on the display screen due to the positional change of the laser beam is large. Therefore, the curvature of the reflector 554 may be determined according to the size of the display screen. For example, if the display screen is relatively large, the curvature of the reflector 554 may be large, and if it is small, the curvature may be small. The size of the curvature may be determined according to the characteristics of the reflector 554 that forms a spherical surface with a constant curvature, a part of which is a spherical surface having a constant curvature, and the other is an aspherical surface with a curvature changing.

The dynamic motion detection apparatus using the laser beam of the present invention can be applied to all applications in which the change of the laser beam occurs by the dynamic motion. For example, a vibration sensor using a laser beam path change due to a vibration of a machine, a pointing device for selecting an object on a display screen according to a user's tilt, and a position sensor for maintaining a fixed position. Hereinafter, a pointing device that can select an object on the display screen among them will be described as an application example.

(Application example)

6 is a view for explaining a three-dimensional pointing device according to an application example of the present invention. In this case, the pointing device applies the first device 100.

According to FIG. 6, the click outside of the case 10 of the first device 100 selects an ON / OFF switch 40 for stopping the operation of the LD 30 and an object on a display screen (not shown). The switch 42 is provided. The ON / OFF switch 40 and the click switch 42 may be disposed at an appropriate position for the user's convenience. In the drawing, the first converter 105 is positioned at a predetermined distance in the direction of the receiver sensor 20 (hereinafter, referred to as a longitudinal direction), but may be disposed at a predetermined distance in a direction perpendicular to the longitudinal direction. The receiver sensor 20 is preprogrammed to correspond to the display screen. For example, when a laser beam is detected at a specific position of the receiver sensor 20, the position is set to designate a specific position of the display screen.

The method of operating the three-dimensional pointing device is as follows. First, after the user presses the ON / OFF switch 40 to operate the LD 30, the first device 100 is tilted to move the pointer on the display screen to a desired position. After that, the ON / OFF switch 40 is turned off (for example, after removing the user's index finger) and the click switch 42 is pressed to select a desired object on the display screen. Here, the movement of the pointer is made by the detection of the receiver sensor 20 of the first device 100. That is, the information sensed by the receiver sensor 20 is transmitted to the display by wire or wirelessly through a wired cable or an RF wireless device to enable the movement of the pointer and the selection of an object.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but many variations and modifications may be made without departing from the scope of the present invention. It is possible. For example, it is possible to detect the dynamic movement by moving the receiver sensor of the present invention up and down and left and right without changing the path of the laser beam. In addition, in the embodiment of the present invention, although the bearing portion to the path change of the laser beam is taken as an example, if the path change of the laser beam is caused by the up and down and left and right rotational movement will be possible within the scope of the present invention.

10; Case 20; Receiver sensor
30; LD 40; ON / OFF switch
42; Click switch
100; First device 105; First conversion unit
110, 210, 430; Bearing
111, 211, 431; Outer ball
112, 212, 432; Cabinet ball
120, 220, 310, 410; LD support
130, 132, 230, 232; reflector
140, 240, 420; [0035]
200; Second device 205; 2nd conversion unit
300; Third device 305; 3rd conversion unit
320; Swivel plate 330; Rotary weight
400; Fourth device 405; 4th conversion unit
440; lens

Claims (15)

case;
A conversion unit including a laser diode generating a laser beam at one side of the case and converting a path of the laser beam by using up, down, left, and right rotational movements of a bearing part; And
Located on the other side of the case so as to be spaced apart from the conversion unit, Dynamic motion detection apparatus using a change in the laser beam by the curvature comprising a sensor for receiving the laser beam. The method according to claim 1, wherein the bearing portion is fixed to the case, the outer surface of the laser beam rotated up and down and left and right and wrapped by the outer ball and the outer portion of the laser beam, characterized in that made of a part exposed Dynamic motion detection device using change. The apparatus of claim 2, wherein the outer ball moves in the same direction as the case. The apparatus of claim 2, wherein the laser diode is positioned at the center of the cabinet ball. 4. The apparatus of claim 2, wherein the laser diode is positioned at the center of the outer ball. 4. The apparatus of claim 2, wherein the laser diode moves within an open portion of the outer ball. 4. The apparatus of claim 2, wherein the outer ball is opened by an angle larger than 50 degrees and smaller than 90. 4. The apparatus of claim 1, further comprising at least one reflector forming a path for transmitting the laser beam passing through the converter to the receiver sensor. The apparatus of claim 8, wherein the reflecting surface of the reflector is a horizontal surface, an inclined surface, or a mixture thereof. case;
A laser diode generating a laser beam on one side of the case;
A receiver sensor located at the other side of the case so as to be spaced apart from the laser diode and receiving the laser beam; And
The laser beam is changed between the laser diode and the receiver sensor, and includes a converter configured to convert a path of the laser beam by using a change in distance between the rotating plate and the case, which are horizontal to the ground. Dynamic motion detection device. The method of claim 10, wherein the rotating plate is placed on the rotary weight,
The rotary weight,
A ball of a spherical shape that allows the rotary adder to rotate vertically and horizontally;
A pillar supporting the ball and limiting a distance between the rotary weight and the rotary plate; And
Dynamic motion sensing device using a change in the laser beam by the curvature, characterized in that the support is fixed to the case and consisting of a support to limit the distance to the rotating plate together with the pillar. The apparatus of claim 11, wherein the rotating plate forms an angle greater than 30 degrees and less than 60 degrees with the rotating weight when the sensing device is not tilted. case;
A laser diode generating a laser beam on one side of the case;
A receiver sensor located at the other side of the case so as to be spaced apart from the laser diode and receiving the laser beam; And
And a conversion unit positioned between the laser diode and the receiver sensor and converting a path of the laser beam by using refraction of the laser beam by a lens. The method according to claim 13, wherein the lens is attached to a bearing consisting of an outer ball rotating up and down and left and right, and an inner ball wrapped around the outer ball and partially exposed. Motion detection device. 15. The apparatus of claim 14, wherein the lens is attached to a center of the inner ball or to a center of the outer ball.
KR1020120011037A 2012-02-03 2012-02-03 Apparatus of sensing dynamic motion using change of laser beam by curvature KR20130090023A (en)

Priority Applications (1)

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Applications Claiming Priority (1)

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KR20130090023A true KR20130090023A (en) 2013-08-13

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