JP4991039B2 - A tilt mechanism to align the direction of the line sensor with the goal line - Google Patents

A tilt mechanism to align the direction of the line sensor with the goal line Download PDF

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JP4991039B2
JP4991039B2 JP2007109927A JP2007109927A JP4991039B2 JP 4991039 B2 JP4991039 B2 JP 4991039B2 JP 2007109927 A JP2007109927 A JP 2007109927A JP 2007109927 A JP2007109927 A JP 2007109927A JP 4991039 B2 JP4991039 B2 JP 4991039B2
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line sensor
housing
line
front plate
mechanism
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JP2008268456A (en
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良成 山口
栄次郎 成川
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株式会社山口シネマ
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Description

  The present invention relates to a tilt mechanism for adjusting the direction of a line sensor of an electronic determination device in a competition (race) such as horse racing, bicycle racing, boat racing, or auto.

2. Description of the Related Art Conventionally, a system is known in which a goal sensor is continuously imaged on a goal line in horse racing and the like, and arrival order determination and time display of horse racing are performed from the captured images.
A line sensor (linear CCD sensor) is used in the electronic judging device for competition, and the line sensor images the line on the goal line of the race track at a certain slit interval, These images are continuously displayed on the monitor to obtain an arrival order determination image.

  This is a CCD line sensor that uses a slit camera to continuously shoot the film at approximately the same speed as the object (for example, a horse) and display it as an arrival order determination image. And electronically realized by a monitor.

  FIG. 7 shows an example of the arrival order determination image. In FIG. 7, 31 and 32 are cursor lines for determining the arrival order. The referee determines the arrival order by placing the cursors 31 and 32 on the tip of the horse for determining the arrival order in the video displayed on the monitor.

  FIG. 6 is a conceptual diagram of an arrival order determination apparatus using a conventional slit camera. In the figure, 51 is a lens, 52 is a slit plate having a slit, 53 is a film, and these are housed in a camera case C. The object image on the goal line 54 is arranged so as to form an image on the film 53 through the lens 51 and the slit, and the film 53 is moved in the direction opposite to the moving object at the speed of the object passing on the goal line and rewinded. As shown in FIG. 7, the image of the moving object that has passed over the goal line is imprinted on the film.

  At present, a line sensor (linear CCD sensor) is used in the electronic judging device for competition instead of the slit camera, and the line sensor is arranged on the goal line of the race track at a certain slit interval. The line-shaped images are continuously displayed on the monitor to obtain an arrival order determination image.

  The line sensor needs to be accurately aligned on the goal line. If there is a deviation between the goal line (judgment reference line) and the imaging direction of the line sensor, the arrival order cannot be determined accurately. For example, if the goal line and the line sensor are installed with even a slight angle, a horse or the like that is delayed depending on the position that has reached the goal line will be detected first, or the rank will be determined to be the same. . In addition, if the direction of the goal line and the line sensor is shifted to the left or right, the arrival order is determined at a position shifted from the goal line.

In horse racing and the like, the order of arrival is determined by the difference in the nose, so it is important to accurately align the line sensor on the goal line.
For this reason, the above-described conventional electronic determination device performs spectroscopic analysis between the lens 51 and the slit 52 in FIG. 6 and uses a viewfinder as disclosed in, for example, Japanese Patent Application Laid-Open Nos. 6-276526 and 4-268548. The line sensor was aligned with the goal line.

  An example of the line alignment is also shown in JP-T-8-506225. In this way, the electronic determination device is installed so that the line sensors accurately overlap the start line or goal line that is the determination reference line.

For this line alignment, it is necessary to adjust the tilt angle (the elevation angle at which the line is viewed) as well as the left and right and back focus adjustment of the substrate on which the line sensor is installed.
Conventionally, these left / right, tilt angle, and back focus adjustments were integrally provided in a housing incorporating a line sensor and circuit, so the camera is fixed when left / right adjustment, tilt angle adjustment, and back focus adjustment are performed. It was very difficult to adjust again.

However, there are cases where it is desired to adjust only the tilt angle. In such a case, it is convenient that only the tilt angle can be adjusted without changing the left / right adjustment and the back focus adjustment. With the conventional ones, everything is already adjusted and fixed, so if you try to adjust it again, you need to redo all adjustments from the beginning, not just the tilt angle, but also the left and right adjustments and back focus adjustment. .
JP-A-6-14233 Japanese Patent Laid-Open No. 5-118908

  The present invention relates to an electronic determination device using a line sensor, wherein the tilt angle adjustment mechanism is different from the left / right adjustment and back focus adjustment so that the tilt angle of the line sensor can be adjusted without changing the left / right adjustment or the back focus adjustment. It is an object of the present invention to provide a camera mechanism that can easily adjust only the tilt angle.

  In order to achieve the above object, the camera head of the electronic judging device for competition according to the present invention images a line on the goal line of the race track with a line sensor at a constant slit interval, and continuously displays the line-shaped image on the monitor. In a camera head of an electronic judging device for competition which is displayed as an arrival order judging image by displaying, a front plate housing having a mechanism for adjusting left and right blur of the line sensor and a back focus mechanism, a line sensor, and a control circuit for the line sensor A line sensor installation housing having a printed circuit board provided with the line sensor installation housing, wherein the line sensor installation housing is incorporated with respect to the front plate housing and is rotatable forward or backward. The installation angle between the case and the case where the line sensor is installed is finely adjusted. And adjusting the.

  Further, a vertical adjustment mechanism reference rod is provided in the center of the front plate casing, and a taper (conical) diameter pin for adjusting the tilt angle is provided on the line sensor installation casing. The conical diameter portion of the pin having the conical diameter for adjusting the tilt angle is pressed against the adjustment reference rod of the tilt mechanism by a spring mechanism, and the tapered (conical) diameter portion of the pin is By moving the line sensor installation housing to the left and right and adjusting the distance of the line sensor installation housing to the front plate housing, the line sensor installation housing rotates forward or backward with respect to the front plate housing. The installation angle between the body and the line sensor installation housing is finely adjusted.

  According to the camera head of the present invention, a line sensor installation housing having a front plate housing having a mechanism for adjusting left and right blur of the line sensor, a back focus mechanism, a line sensor, and a printed circuit board provided with a control circuit for the line sensor. The body can be assembled separately and adjusted, and only the tilt angle of the line sensor is adjusted while fixing the adjustment position of the front panel housing that has the back focus mechanism and the mechanism that adjusts the left and right blur of the line sensor once adjusted. Because it is possible, it is not necessary to redo all adjustments at the time of adjusting the tilt angle as in the past, so that the tilt angle can be adjusted easily and easily.

1 and 2 are exploded views of a camera head that houses a line sensor of the present invention.
FIG. 1 shows an entire exploded view of the front plate housing 1. In FIG. 1, reference numeral 2 denotes a front plate, and a line sensor receiving plate 4 into which a line sensor is fitted behind the front plate 2 is screwed. In the center of the line sensor receiving plate 4, a pin 6 that fits into a groove of a line sensor front plate, which will be described later, is provided. On the upper rear side of the front plate 2, there is provided a reference rod 7 for adjusting the tilt mechanism described later.
The front plate 2, the line sensor receiving plate 4, the reference rod for adjusting the tilt mechanism and the like are all integrated by screwing to form the front plate housing 1.

FIG. 2 shows the line sensor installation housing 8 used by being fitted to the front plate housing.
In FIG. 2, 9 is a line sensor front plate, and grooves 18 and 19 are cut in the center of the line sensor front plate, and the grooves 18 and 19 are used when the camera is incorporated and used. It fits into a pin 6 provided in the center of the sensor receiving plate 4. 10 is a near-infrared cut filter glass, and 11 is a CCD image sensor of a line sensor. Reference numerals 20, 21, and 22 denote printed circuit board mounting plates, which are formed with a casing including a front printed circuit board 12 on which the line sensor 11 is installed and printed circuit board mounting plates 20 and 22 extending from the printed circuit board to the left and right. The printed circuit board mounting plates 20, 21, and 22 are provided with circuit boards that perform line sensor drive processing. A pin 13 having a tapered (conical) diameter for adjusting the tilt angle is fitted above the printed circuit board mounting plates 20 and 22. A heat radiating plate 16 and a cooling fan 17 are provided behind the front printed circuit board 21.

  These line sensor front plate 9, near-infrared cut filter glass 10, line sensor CCD image pickup device 11, printed circuit board mounting plates 20, 21, 22, heat sink 16 and cooling fan 17 are all integrated by screwing. Thus, the line sensor installation housing 8 is obtained. FIG. 3 shows a front view, a side view, and a bottom view of the line sensor installation housing 8.

  FIG. 4 shows a plan view (as viewed from the right in FIG. 1) of the front panel housing 1 after assembly as viewed from the rear. 4, 7 is a reference rod 7 for adjusting the tilting mechanism of FIG. 1. On the left side and the lower side of FIG. 4, a tapered shape (conical shape) for adjusting the tilt angle of the line sensor installation housing 8 is shown. The top view and cross-sectional view which show the relationship between the pin 13 which has the diameter of this, and the reference | standard reference | standard 7 for adjustment of the said tilt mechanism are shown. A belt 38 is wound around four pulleys 34, 35, 36, and 37, and a back focus mechanism (not shown) is adjusted by the rotation of the belt. The oval holes 41, 42, and 43 are used to adjust the vertical and horizontal blur of the line sensor. The longitudinal direction of the line sensor needs to be accurately aligned with the goal line. For this reason, the screw in the elongated hole is set so that the reference line in the viewfinder 25 in the optical system 14 shown in FIG. The stop position is adjusted.

  The viewfinder 25 is the same as the conventional one described above, and is installed between the lens and the line sensor to divide the imaging light and adjust the direction of the line sensor to the reference direction.

  As shown in FIG. 4, the conical diameter portion of the pin 13 having the conical diameter for adjusting the tilt angle is pressed against the adjustment reference rod 7 of the tilt mechanism by a spring mechanism described later. Therefore, when the screw 23 is rotated, the tapered (conical) diameter portion of the pin 13 moves to the left and right (up and down in the left side view of FIG. 4), and as a result, the line sensor as indicated by the arrow A in FIG. The distance between the installation housing 8 and the front plate housing 1 is adjusted, and the line sensor installation housing 8 rotates forward or backward with respect to the front plate housing 1, so that the front plate housing 1 and the line sensor installation housing are rotated. The forward or backward tilt angle with the body 8 is finely adjusted.

This is because the front plate housing 1 is fixed and installed in accordance with the goal line direction, so that the tilt angle of the line sensor 11 is finely adjusted by adjusting the angle.
Note that the tilt angle in this case refers to an angle (elevation angle) between the horizontal line and the viewpoint point when the viewpoint point of the line sensor moves up and down on the vertical line.

FIG. 5 shows an example of a spring mechanism for press-contacting the conical diameter portion of the pin 13 having the conical diameter for adjusting the tilt angle and the adjusting reference rod 7 of the tilt mechanism.
For example, as shown in FIG. 5, the spring 46 is a pin 47 (see FIG. 2) supported between the locking hole 45 at the top of the front plate housing 1 and the printed circuit board mounting plates 20 and 22 of the line sensor installation housing 8. Although not shown, it is stretched so as not to interfere with other pins or the like. As a result, the line sensor installation housing 8 is urged in a direction that rotates forward with respect to the front plate housing 1, and the cone diameter of the pin 13 having the conical diameter for adjusting the tilt angle is increased. The portion and the reference rod 7 for adjusting the tilt mechanism are pressed against each other. Note that the spring is not limited to the above location, but may be any other location as long as the line sensor installation housing 8 is urged in the direction of rotating forward with respect to the front plate housing 1.

  With the camera head of the present invention, the tilt angle of the line sensor can be adjusted with the other back focus and left / right adjustments fixed, so it is not difficult to change the tilt angle for each race. Since the order determination can be easily performed, industrial applicability is high.

It is an exploded view of the front plate housing | casing of the camera head which accommodated the line sensor of this invention. It is an exploded view of the line sensor installation housing | casing of the camera head which accommodated the line sensor of this invention. It is the front view of the line sensor installation housing | casing of this invention, a side view, and a bottom view. It is the top view which looked at the front plate housing | casing after the assembly of this invention from back, the left view, and bottom sectional drawing. It is a figure which shows the example of the spring mechanism for press-contacting the part of the cone-shaped diameter of the pin which has the cone-shaped diameter for tilt angle adjustment of this invention, and the adjustment reference | standard rod of the said tilt mechanism. It is a conceptual diagram of the conventional slit camera. It is a figure which shows the example of the arrival order determination image in the electronic determination apparatus for competitions.

Explanation of symbols

1 Front plate housing 4 Line sensor backing plate 6 Pin that fits into groove on line sensor front plate 7 Reference rod for adjusting tilt mechanism 8 Line sensor installation housing 11 Line sensor 13 Conical diameter for tilt angle adjustment Pin 16 Radiator 17 Cooling fan 38 Back focus adjustment belt 46 Spring

Claims (2)

  1. In the camera head of the electronic judging device for competitions, which is taken by a CCD line sensor at a predetermined slit interval on the goal line of the race track and displayed on the monitor in succession as a line-like image. ,
    It consists of a front panel housing having a mechanism for adjusting left and right blur of the line sensor and a back focus mechanism, a line sensor installation housing having a line sensor and a printed circuit board provided with a control circuit for the line sensor,
    The line sensor installation housing is incorporated into the front plate housing, and the front plate housing having a mechanism for adjusting the left and right blur of the line sensor and a back focus mechanism is fixed in front of the front panel housing. The built-in angle between the front plate housing and the line sensor installation housing is finely adjusted by being able to rotate in the tilt or backward tilt direction, and the tilt angle of the line sensor is adjusted by the fine adjustment. A camera head for an electronic judging device for competition.
  2. In the center of the front plate housing is provided a reference rod for adjusting the vertical mechanism in the vertical direction, and the line sensor installation housing is provided with a pin having a tapered (conical) diameter for adjusting the tilt angle,
    The conical diameter portion of the pin having the conical diameter for adjusting the tilt angle is pressed against the adjustment reference rod of the tilt mechanism by a spring mechanism, and the tapered (conical) diameter portion of the pin is moved to the left and right. When the distance between the line sensor installation housing and the front plate housing is adjusted, the line sensor installation housing rotates forward or backward with respect to the front plate housing. The camera head of the electronic judging device for games according to claim 1, wherein the assembly angle with the line sensor installation housing is finely adjusted.
JP2007109927A 2007-04-18 2007-04-18 A tilt mechanism to align the direction of the line sensor with the goal line Active JP4991039B2 (en)

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JP2007109927A JP4991039B2 (en) 2007-04-18 2007-04-18 A tilt mechanism to align the direction of the line sensor with the goal line

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JP2007109927A JP4991039B2 (en) 2007-04-18 2007-04-18 A tilt mechanism to align the direction of the line sensor with the goal line

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104038692A (en) * 2014-04-28 2014-09-10 深圳英飞拓科技股份有限公司 Camera back-focus adjustment method and camera back-focus adjustment device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5068725B2 (en) 2008-10-17 2012-11-07 株式会社マキタ Hedge trimmer
CN102025906B (en) * 2010-09-30 2013-09-18 马克·伊恩·提本汉姆 Monitoring equipment of security system
EP2887655A1 (en) * 2013-12-20 2015-06-24 Swiss Timing Ltd. Adaptive colour filter for digital sensor
EP2887656B1 (en) * 2013-12-20 2019-11-06 Swiss Timing Ltd. Method for adjusting a colour filter for a digital sensor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3729818B2 (en) * 2003-05-14 2005-12-21 株式会社日本写真科学研究所 Arrival order and time determination device
JP2005018723A (en) * 2003-06-27 2005-01-20 For-A Co Ltd Line sensor camera apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104038692A (en) * 2014-04-28 2014-09-10 深圳英飞拓科技股份有限公司 Camera back-focus adjustment method and camera back-focus adjustment device
CN104038692B (en) * 2014-04-28 2017-10-27 深圳英飞拓科技股份有限公司 A kind of camera back focus method of adjustment and camera back focus adjusting apparatus

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