JP2013129300A - Sensor unit of movable platform gate device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and surely adjust a position and an angle for fixing a sensor to a fence of a movable platform device.SOLUTION: This sensor unit 20 includes a casing 26 fixed to the fence 14, and a holder for holding a three-dimensional sensor 22 is detachably installed in an opening part formed in the casing 26 in a state of holding the three-dimensional sensor 22. The holder is provided with a flange brought into close contact with a frame part for surrounding the opening part of the casing 26. An installation angle of the three-dimensional sensor 22 is univocally determined by bringing the flange of the holder and the frame part of the casing 26 into close contact with each other. The three-dimensional sensor 22 can be installed so as to become an angle of not generating a place (a dead angle ) D dislocated from an irradiation area of the detection light L emitted from a light emitting part of the three-dimensional sensor 22, in a range for requiring detection of a passenger between a track end 12a of a platform 12 and a side door 52 of a railroad vehicle 50.

Description

  The present invention relates to a sensor unit of a movable home gate device installed on a platform such as a railway.

  In recent years, in order to prevent a passenger falling accident from a railway platform, a mobile home gate device separating the track and the platform has been widely used. As shown in FIGS. 1A and 1B, the movable home gate device 10 has an opening along the track end 12 a of the platform 12 and facing the side door 52 at the stop position of the railway vehicle 50. A fence 14 is provided with an interval so as to be 16. The fence 14 also functions as a door pocket of a door 18 (shown only in FIG. 1 (a)) that can be moved into and out of the fence 14. And normally, the platform 12 and the track are separated by closing the opening 16 between the fences 14 with a door 18. Further, when passengers get on and off between the platform 12 and the railway vehicle, the door 18 is drawn into the fence 14 and the opening 16 is formed between the fences 14.

  Further, when the passenger 14 or an obstacle (hereinafter referred to as “passenger or the like”) is present in the opening 16 of the fence 14 of the movable platform device 10, the door 18 is not inadvertently opened and closed. Therefore, a sensor unit 20 that detects passengers and the like is provided. Conventionally, a transmission type sensor that irradiates a linear light beam is often used for the sensor unit 20, but in recent years, passengers and the like around the opening 16 can be detected in a planar and three-dimensional manner. In addition, a reflection type three-dimensional sensor has been used, and the discrimination accuracy of passengers and the like has been improved (see, for example, Patent Document 1).

JP 2011-016421 A

  By the way, since it is indispensable for the sensor unit 20 to detect passengers and the like in the vicinity of the side door 52 of the railway vehicle 50 with high accuracy, the installation location thereof is connected to the track end 12a of the platform 12 of the fence 14. It is common to have the facing side. Moreover, as for the sensor unit 20, it is desirable to suppress the protrusion amount of the sensor unit 20 from the fence 14 as much as possible so that a construction limit may not be violated. In order to facilitate maintenance of the sensor unit 20, it is desirable that the end of the fence 14 be provided as close as possible to the opening 16 side.

However, when a three-dimensional sensor is used for the sensor unit 20, the detection light emitted from the light-emitting portion of the three-dimensional sensor has a form in which the irradiation range is expanded in a quadrangular pyramid shape, so that the above conditions are satisfied. If the sensor unit 20 is disposed at a position where the sensor unit 20 is located, a portion (a blind spot) is generated between the track end 12a of the platform 12 and the side door 52 of the railway vehicle 50 that deviates from the irradiation region of the detection light of the three-dimensional sensor. It will be. Therefore, it is desired to easily and reliably set the position and angle at which the sensor unit 20 is fixed to the fence 14 so that this blind spot does not occur in a range where passengers are required to be detected.

  The present invention has been made in view of the above problems, and the object of the present invention is to easily and reliably adjust the position and angle at which the sensor is fixed with respect to the fence of the movable platform device. It is to do.

(Aspect of the Invention)
The following aspects of the present invention exemplify the configuration of the present invention, and will be described separately for easy understanding of various configurations of the present invention. Each item does not limit the technical scope of the present invention. Therefore, the technical aspects of the present invention also apply to those in which some of the constituent elements in each section are replaced, deleted, or other constituent elements are added while referring to the best mode for carrying out the invention. It can be included in the range.

(1) The movable platform device provided along the track end of the platform is provided on a fence installed at an interval so that a portion facing the side door at the stop position of the railway vehicle is an opening. A sensor unit that detects people around the fence opening,
A three-dimensional sensor, a holder for holding the three-dimensional sensor, and a casing fixed to the fence for detachably mounting the holder, the casing holding the three-dimensional sensor An opening for inserting the holder and a frame surrounding the opening, and the holder is provided with a flange closely contacting the frame surrounding the opening formed in the casing. A sensor unit of a movable platform device in which an attachment angle of the three-dimensional sensor is determined by closely contacting a flange of the casing and a frame portion of the casing (Claim 1).

The sensor unit of the movable home gate device described in this section is provided on a fence that is installed at an interval along the line end of the platform, and detects a person or the like around the opening of the fence. It is composed of a three-dimensional sensor. In addition, a holder for holding the three-dimensional sensor is detachably mounted in a state of holding the three-dimensional sensor in an opening formed in the casing, including a casing fixed to the fence. In addition, the holder is provided with a flange that is in close contact with the frame surrounding the opening of the casing, and the attachment angle of the three-dimensional sensor is determined by the close contact between the holder flange and the casing frame. is there.
And the detection light of the aspect which the irradiation range is emitted from the light emission part of a three-dimensional sensor in the range which needs the detection of a passenger etc. between the track end of a platform, and the side door of a railcar The three-dimensional sensor is attached so that a position (a blind spot) outside the irradiation region does not occur.

(2) In the above item (1), the frame portion surrounding the opening of the casing is inclined at a predetermined inclination angle with respect to the normal of the plane parallel to the line end of the platform, facing the line end direction. A sensor unit for a movable platform device (claim 2).
The sensor unit of the movable home gate device described in this section is configured such that the frame portion surrounding the opening of the casing is at a predetermined angle facing the line end direction with respect to the normal line of the plane parallel to the line end of the platform. Inclined. Therefore, the location (dead angle) where the irradiation area by the detection light emitted from the light emitting part of the three-dimensional sensor is outside the range that needs to be detected by passengers, etc. only by the close contact between the flange of the holder and the frame part of the casing. A three-dimensional sensor is attached at an angle at which no occurrence occurs.

(3) In the above item (2), the predetermined inclination angle θ ₄ of the frame portion surrounding the opening of the casing is the rotation angle θ ₃ of the viewing angle center of the three-dimensional sensor, the sensor scanning viewing angle θ ₂ , And the angle θ ₁ derived based on the distance from the scanning center point of the sensor to the opening side end of the fence and the distance to the plane installed parallel to the track end of the fence platform. _{when, θ 4 = θ 3 = (} θ 2/2) sensor unit movable platform unit set as - [theta] ₁ and becomes a value (claim 3).
Sensor unit movable home gate apparatus according to the above frame portion surrounding the opening of the casing, a predetermined inclination angle theta ₄ is a _{θ 4 = θ 3 = (θ} 2/2) -θ 1 By setting the value to a value, the field of the detection light that is emitted from the light-emitting part of the three-dimensional sensor and has a quadrangular pyramid-shaped irradiation range that is emitted only from the close contact between the holder flange and the casing frame. The three-dimensional sensor is attached at an optimum angle in consideration of the angle.

(4) In the above items (1) to (3), the holder is a sensor unit for a movable platform device that is in close contact with the outside of the frame portion of the casing (claim 4).
The sensor unit of the movable home gate device described in this section is configured such that the holder is in close contact with the outside of the casing frame, and the sensor is attached to and detached from the casing from the outside of the casing together with the holder.

  Since this invention was comprised in this way, it becomes possible to adjust easily and reliably the position and angle which fix a sensor with respect to the fence of a movable platform apparatus.

1 shows a movable home gate device including a sensor unit according to an embodiment of the present invention, where (a) is a front view seen from the platform side in the track direction, (b) is a plan view, and (c) is ( The principal part enlarged view of b), (d) is a figure which shows the comparative example with (c). FIG. 2 shows the movable home gate device shown in FIG. 1, (a) is a back view of the sensor unit peripheral portion as seen from the track side in the platform direction, and (b) is a side view as seen from the opening side end portion. FIG. It is sectional drawing of the sensor unit in the AA line of FIG.2 (b). BRIEF DESCRIPTION OF THE DRAWINGS The three-dimensional sensor which concerns on embodiment of this invention and the holder of the state holding the three-dimensional sensor are shown, (a) is a front view, (b) is a top view, (c) is a side view. is there. It is a top view explaining the concrete determination method of the inclination angle of the frame part surrounding the opening part of the casing which concerns on embodiment of this invention.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings. Here, parts that are the same as or equivalent to those of the prior art are denoted by the same reference numerals, and detailed description thereof is omitted.
As shown in FIGS. 1B and 1C, the movable home gate device 10 according to the embodiment of the present invention is a sensor provided on a side surface of the fence 14 facing the line end 12a of the platform 12. A unit 20 is provided.

  As shown in FIGS. 2 to 4, the sensor unit 20 is fixed to the fence 14 for detachably mounting the three-dimensional sensor 22, the holder 24 that holds the three-dimensional sensor 22, and the holder 24. And a casing 26. The holder 24 includes a flat plate-like flange 24a and a pair of flat plate-like brackets 24b protruding in parallel from the flange 24a. The flange 24a is formed with an opening 24c for exposing the light emitting portion 22a of the three-dimensional sensor 22. The light emitting portion 22a is opposed to the opening 24c, and the three-dimensional sensor 22 is inserted between the brackets 24b. The bracket 24b and the three-dimensional sensor 22 are fixed by the bolt 28, whereby the three-dimensional sensor 22 is held by the holder 24. The shape of the holder 24 is not limited to the example shown in the figure, and any shape can be used as long as the three-dimensional sensor 22 can be easily attached and detached and can also be attached to and detached from the casing 26.

In the illustrated example, the casing 26 is a member having a hat-shaped cross section that extends in the height direction of the fence 14. Then, as shown in FIG. 3, among the pair of inclined surfaces 26 a constituting the hat-shaped cross section, an inclined surface (lower inclined surface in FIG. 3) 26 a facing the opening 16 side of the fence 14 is three-dimensional. An opening 26b for inserting the holder 24 in a state where the sensor 22 is held is formed. The attachment angle of the three-dimensional sensor 22 is determined by the flange 24a of the holder 24 being in close contact with a frame portion 26c (in the illustrated example, a part of the inclined surface 26a) surrounding the opening portion 26b. The shape of the casing 26 is not limited to the example shown in the figure, and has at least an inclined surface 26 a facing the opening 16 side of the fence 14, an opening portion 26 b and a frame portion 26 c, and houses the three-dimensional sensor 22 together with the holder 24. Anything is possible.

The flange 24 a of the holder 24 is attached to the casing 26 so as to be in close contact with the outside of the frame portion 26 c of the casing 26. Further, the attaching / detaching operation of the flange 24a of the holder 24 and the frame portion 26c surrounding the opening 26b is performed by inserting a bolt 30 (see FIG. 2) into a bolt hole 24d (see FIG. 4A) formed in the flange 24a of the holder 24. (See (b)), the bolt 30 is screwed into a screw hole (not shown) formed in the frame portion 26 c of the casing 26, and is performed from the outside of the casing 26. Further, the connector attaching / detaching operation between the three-dimensional sensor 22 and the internal wiring installed in the casing 26 is performed by removing the flange 24a of the holder 24 from the frame portion 26c of the casing 26 and opening the opening 26b of the casing 26. Therefore, it is possible to carry out by drawing out the internal wiring to the outside.

Further, as shown in FIG. 5, a frame portion 26 c surrounding the opening 26 b of the casing 26 is formed on a surface parallel to the line end 12 a of the platform 12, in the illustrated example, on the line end 12 a of the platform 12 of the fence 14. parallel installed the surface to 14a against, with respect to the normal N, is one that is inclined at a predetermined angle theta ₄ facing the line end 12a direction (if the line end 12a of the platform 12 is curved Is the normal N of the tangent of the curve.) The inclination angle θ ₄ is the rotation angle θ _{3 at the} center of the viewing angle of the three-dimensional sensor 22, the sensor scanning viewing angle θ ₂ , and the scanning center point P of the three-dimensional sensor 22 to the opening 16 side end of the fence 14. The angle θ ₁ (= tan ⁻¹ ···) derived from the distance X and the distance from the scanning center point P of the three-dimensional sensor 22 to the surface 14a of the fence 14 installed in parallel to the line end 12a of the platform 12. when the H / X), is set to _{θ 4 = θ 3 = (θ} 2/2) -θ 1 and becomes a value.
In FIG. 5, a dotted line indicated by a symbol C indicates a viewing angle center line of the three-dimensional sensor 22 according to the embodiment of the present invention, and a dotted line indicated by C ₀ is a three-dimensional sensor as a comparative example. The viewing angle center line when 22 viewing angle center lines are arranged in parallel to the line end 12a of the platform 12 is shown.

Now, according to the embodiment of the present invention configured as described above, the following operational effects can be obtained.
That is, the sensor unit 20 of the movable home gate device 10 according to the embodiment of the present invention is provided on the fence 14 installed at intervals along the line end 12 a of the platform 12, and the periphery of the opening of the fence 14. Is used to detect people and the like, and is constituted by a three-dimensional sensor. The sensor unit 20 includes a casing 26 fixed to the fence 14, and a holder 24 that holds the three-dimensional sensor 22 is held in the opening 26 b formed in the casing 26 while holding the three-dimensional sensor 22. It is detachably mounted. In addition, the holder 24 is provided with a flange 24a that is in close contact with the frame portion 26c surrounding the opening 26b of the casing 26, and the flange 24a of the holder 24 and the frame portion 26c of the casing 26 are in close contact with each other. The mounting angle of the original sensor 22 is uniquely determined.

Then, as shown in FIG. 1C, the light emitting unit of the three-dimensional sensor 22 is within a range that requires detection of passengers or the like between the track end 12 a of the platform 12 and the side door 52 of the railway vehicle 50. It is possible to attach the three-dimensional sensor 22 so that the portion of the detection light L to be emitted does not generate a portion (dead angle) that deviates from the irradiation region.
In FIG. 1D, as a reference example of the embodiment of the present invention, the viewing angle center line of the three-dimensional sensor 22 (see C _{0 in} FIG. 5) is arranged in parallel to the line end 12 a of the platform 12. In this case, the irradiation range of the detection light L is shown. In this reference example, a part of the side door 52 of the railway vehicle 50 is not irradiated with the detection light L of the three-dimensional sensor 22, and the blind spot D of the detection range of the three-dimensional sensor 22 is within a range where passengers need to be detected. Will occur. On the other hand, as shown in FIG. 1 (c), according to the embodiment of the present invention, the side door 52 of the railway vehicle 50 and the periphery thereof are included in the detection range of the three-dimensional sensor 22. The home gate device 10 can be greatly contributed to safe operation.

Further, as shown in FIG. 5, the sensor unit 20 of the movable home gate device 10 according to the embodiment of the present invention has a frame portion 26 c surrounding the opening portion 26 b of the casing 26, and the line end 12 a of the platform 12. with respect to the normal N of the surface parallel 14a, in which are inclined at a predetermined angle theta ₄ facing the line end 12a direction. Therefore, in a range where detection of passengers or the like is necessary, at an angle where a spot (dead angle) D (FIG. 1 (d)) outside the irradiation region by the detection light L emitted from the light emitting unit 22a of the three-dimensional sensor 22 does not occur, The three-dimensional sensor 22 can be easily and securely attached.

Moreover, the frame portion 26c surrounding the opening 26b of the casing 26, the inclination angle theta _{4 is, θ 4 = θ 3 = (} θ 2/2) By setting the - [theta] ₁ and comprising value, flange of the holder 24 Considering the viewing angle of the detection light L that is emitted from the light emitting part 22a of the three-dimensional sensor 22 and whose irradiation range extends in a quadrangular pyramid shape only by the close contact between the casing 24a and the casing frame part. It becomes possible to attach the three-dimensional sensor 22 to the angle.
In addition, the frame part 26c surrounding the opening part 26b of the casing 26 may constitute a plane parallel to the normal line N, and the inclination angle θ4 may be realized by adjusting the shape of the flange 24a of the holder 24. Further, even if the inclination angle θ4 is realized by the sum of the inclination angles of the frame portion 26c surrounding the opening 26b of the casing 26 and the flange 24a of the holder 24, the same effect can be obtained. It is.

In addition, when the flange 24a of the holder 24 and the frame portion 26c of the casing 26 are in close contact with each other, the holder 24 is brought into close contact with the outside of the frame portion 26c of the casing 26. Can be performed together with the holder 24 from the outside of the casing 26, and the attaching / detaching operation of the three-dimensional sensor 22 can be performed quickly.
Further, when the holder 24 is brought into close contact from the outside of the frame portion 26c of the casing 26, the seal member 32 is sandwiched between the flange 24a of the holder 24 and the frame portion 26c of the casing 26 as shown in FIG. Thus, it is possible to ensure the sealing performance of this portion.

10: movable home gate device, 12: platform, 12a: track end, 14: fence, 16: opening, 20: sensor unit, 22: three-dimensional sensor, 24: holder, 24a: flange, 26: casing, 26a: the inclined surface, 26b: opening, 26c: frame portion, theta _4: tilt angle of the frame part surrounding the opening of the casing

Claims (4)

The movable platform device provided along the track end of the platform is provided on a fence installed at an interval so that a portion facing the side door at the stop position of the railway vehicle is an opening. A sensor unit that detects people in the vicinity,
A three-dimensional sensor, a holder for holding the three-dimensional sensor, and a casing fixed to the fence for detachably mounting the holder, the casing holding the three-dimensional sensor An opening for inserting the holder and a frame surrounding the opening, and the holder is provided with a flange closely contacting the frame surrounding the opening formed in the casing. A mounting unit of the three-dimensional sensor is determined by closely contacting the flange of the casing and the frame portion of the casing, and the sensor unit of the movable platform device. The frame portion surrounding the opening of the casing is inclined at a predetermined inclination angle with respect to a normal line of a plane parallel to the line end of the platform in a line end direction. A sensor unit of the movable platform device according to claim 1. The predetermined inclination angle θ ₄ of the frame portion surrounding the opening of the casing is determined from the rotation angle θ ₃ of the viewing angle center of the three-dimensional sensor, the sensor scanning viewing angle θ ₂ , and the scanning center point of the sensor. When the angle θ ₁ derived based on the distance to the opening side end of the fence and the distance to the surface installed in parallel to the line end of the platform of the fence is θ ₄ = θ ₃ = (θ _3. The sensor unit of the movable platform device according to claim 2, wherein the sensor unit is set to a value of 2/2)-[theta] ₁ . The sensor unit of the movable platform device according to any one of claims 1 to 3, wherein the holder is in close contact with an outside of a frame portion of the casing.

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