JP6241101B2 - Passenger conveyor object detection device - Google Patents

Description

  The present invention relates to an object detection device for a passenger conveyor.

  For example, Patent Document 1 proposes a plurality of photoelectric devices that form an optical axis orthogonal to the traveling direction of a moving body of a passenger conveyor. The plurality of photoelectric devices are provided side by side along the traveling direction of the moving body.

Japanese Utility Model Publication No. 5-81174 Japanese Patent No. 5089304 JP 2005-8326 A

  When an object is detected by the photoelectric device, the interval between adjacent photoelectric devices is set in accordance with the diameter of the minimum part of the object. For this reason, the number of photoelectric devices proportional to the length of the passenger conveyor is required.

  The present invention has been made to solve the above-described problems. An object of the present invention is to provide an object detection device for a passenger conveyor that can reduce the number of photoelectric devices.

The object detection device for a passenger conveyor according to the present invention is provided on the structural walls on both sides of the moving body of the passenger conveyor, is arranged along the traveling direction of the moving body, and forms an optical axis across the upper side of the moving body, A plurality of photoelectric devices whose optical axes are inclined in the same direction with respect to the traveling direction of the moving body, and provided on an end of the moving body in the traveling direction side of the plurality of photoelectric devices, on a horizontal projection plane And an end side photoelectric device having an optical axis formed in a direction perpendicular to the traveling direction of the moving body at a position overlapping with the moving body, wherein the photoelectric device projects light that forms the optical axis And a light receiving device that receives light projected by the projector, wherein one of the adjacent projectors is provided on one of the structural walls, and the other of the adjacent projectors is the structural wall The receiver that is provided on the other side and corresponds to one of the adjacent projectors is Provided on the other Zokabe, adjacent light-receiving unit corresponding to the other floodlight has is provided at one of the structural wall.

  According to the present invention, the number of photoelectric devices can be reduced.

It is a front view of the principal part of a passenger conveyor using the object detection apparatus of the passenger conveyor in Embodiment 1 of this invention. It is a top view of the principal part of a passenger conveyor using the object detection apparatus of the passenger conveyor in Embodiment 1 of this invention. It is a top view of the passenger conveyor using the object detection apparatus of the passenger conveyor in Embodiment 1 of this invention. It is a side view of the principal part of a passenger conveyor using the object detection apparatus of the passenger conveyor in Embodiment 1 of this invention. It is a front view of the principal part of a passenger conveyor using the object detection apparatus of the passenger conveyor in Embodiment 2 of this invention. It is a top view of the principal part of a passenger conveyor using the object detection apparatus of the passenger conveyor in Embodiment 3 of this invention.

  A mode for carrying out the invention will be described with reference to the accompanying drawings. In addition, the same code | symbol is attached | subjected to the part which is the same or it corresponds in each figure. The overlapping explanation of the part is appropriately simplified or omitted.

Embodiment 1 FIG.
1 is a front view of an essential part of a passenger conveyor using an object detection device for a passenger conveyor according to Embodiment 1 of the present invention.

  In FIG. 1, a passenger conveyor consists of escalators. A moving body 1 is provided on the passenger conveyor. The moving body 1 includes a plurality of steps. The plurality of steps are provided endlessly. Structural walls 2 are provided on both sides of the moving body 1. The structural wall 2 includes a skirt guard 2a, a balustrade 2b, and the like. The skirt guard 2 a is provided on both sides of the moving body 1. The balustrade 2b is provided on the upper surface of the skirt guard 2a. A handrail 3 is provided on the upper part of the balustrade 2b. The handrail 3 is provided so as to be able to move in synchronization with the moving body 1 on which the user is placed.

  A translucent plate 4a is provided on one inner surface of the skirt guard 2a. The translucent plate 4a is formed of a material that transmits light. For example, the translucent plate 4a is made of acrylic, glass, or polycarbonate. A translucent plate 4b is provided on the other inner surface of the skirt guard 2a. The translucent plate 4b is formed of a material that transmits light. For example, the translucent plate 4b is made of acrylic, glass, or polycarbonate.

  A photoelectric device 5 is provided on the passenger conveyor. The photoelectric device 5 includes a projector 5a and a light receiver 5b. The projector 5a is provided on one side of the skirt guard 2a. The projector 5a is provided inside the translucent plate 4a. The light receiver 5b is provided on the other side of the skirt guard 2a. The light receiver 5b is provided inside the translucent plate 4b.

  The projector 5a projects light in a straight line. The incident surface of the translucent plate 4a refracts the light. The translucent plate 4a transmits the light. The exit surface of the light transmissive plate 4a refracts the light. The light travels toward the translucent plate 4b.

  When there is no object between the translucent plate 4a and the translucent plate 4b, the light crosses the moving body 1. The translucent plate 4b receives the light. The incident surface of the translucent plate 4b refracts the light. The translucent plate 4b transmits the light. The exit surface of the light transmissive plate 4b refracts the light. The light travels toward the light receiver 5b. The light receiver 5b receives the light. As a result, an optical axis 5c is formed between the projector 5a and the light receiver 5b.

  When there is an object between the translucent plate 4a and the translucent plate 4b, the translucent plate 4b does not receive light. The light receiver 5b does not receive light. In this case, an object is detected.

Next, the arrangement of the projector 5a and the light receiver 5b will be described with reference to FIG.
FIG. 2 is a plan view of the main part of the passenger conveyor using the passenger conveyor object detection device according to the first embodiment of the present invention.

  In FIG. 2, when a plurality of photoelectric devices 5 are provided, the plurality of optical axes 5c are set to be parallel to each other. At this time, the light projector 5 a and the light receiver 5 b are arranged such that the optical axis 5 c is inclined by an angle θ with respect to the traveling direction of the moving body 1. The angle θ is set as small as possible in consideration of the refractive indexes of the light-transmitting plates 4a and 4b. For example, when the translucent plates 4a and 4b are acrylic, the angle θ is set to 30 degrees.

Next, the arrangement of the photoelectric device 5 will be described with reference to FIG.
FIG. 3 is a plan view of a passenger conveyor using the passenger conveyor object detection device according to Embodiment 1 of the present invention.

  As shown in FIG. 3, a plurality of projectors 5 a are provided side by side at equal intervals along the traveling direction of the moving body 1 in the intermediate portion of the skew portion of the passenger conveyor. When the diameter of the object 6 to be detected is α, the adjacent projectors 5a are arranged with an interval of α / sin θ or less. The plurality of light receivers 5b are provided along the traveling direction of the moving body 1 at equal intervals with the intervals of the projectors 5a. The adjacent light receivers 5b are arranged with an interval of α / sin θ or less. As a result, the plurality of optical axes 5 c are inclined at the same angle with respect to the traveling direction of the moving body 1.

  At the end of the skewed portion of the passenger conveyor, the plurality of projectors 5a are provided side by side at equal intervals. When the diameter of the object 6 to be detected is α, the plurality of projectors 5a are arranged with an interval of α or less. The plurality of light receivers 5b are provided side by side with a narrower interval than the interval between the projectors 5a. As a result, the plurality of optical axes 5 c are inclined at different angles with respect to the traveling direction of the moving body 1.

  For example, the height difference H of the passenger conveyor is assumed. The inclination of the skew portion of the passenger conveyor is 30 degrees. Let L1 be the end length of the skewed portion of the passenger conveyor. In this case, the number of the photoelectric devices 5 is (2H−L1) / (α / sin θ) +7 in the skew portion of the passenger conveyor.

  For example, when a 300 mm object is reliably detected, α is set to 275 mm. In this case, if the height difference H of the passenger conveyor is 7.5 m, the number of photoelectric devices 5 is (2H−L1) / (α / sin θ) + 7≈32.2 in the skew portion of the passenger conveyor. .

  Two photoelectric devices 5 are provided in the horizontal portion on the upper end side of the passenger conveyor. Two photoelectric devices 5 are provided outside the upper end of the passenger conveyor. Two photoelectric devices 5 are provided outside the lower end of the passenger conveyor. For this reason, the number of photoelectric devices 5 is 40.2 in the entire passenger conveyor.

  On the other hand, when the optical axis is orthogonal to the traveling direction of the moving body 1, the number of photoelectric devices 5 is (2H−L1) /α+7≈57.5 in the skew portion of the passenger conveyor. For this reason, in the entire passenger conveyor, the number of photoelectric devices 5 is 65.5.

Next, the detection direction of the object 6 will be described with reference to FIG.
FIG. 4 is a side view of the main part of the passenger conveyor using the passenger conveyor object detection device according to the first embodiment of the present invention.

  As shown in FIG. 4, the optical axis 5 c is set so as not to be blocked in Step 1. In the middle part of the skewed part of the passenger conveyor, the optical axis 5c is set as close to step 1 as possible. Specifically, the sensor installation surface height M from the lowest point of Step 1 is set to be higher than the height L of Step 1 in the intermediate portion of the skewed portion of the passenger conveyor. The sensor installation surface height M from the lowest point in step 1 is set lower than the diameter α of the object 6. In this case, the object 6 protrudes in a direction away from the step 1 with respect to the plane connecting the adjacent edges of the step 1. Therefore, the object 6 reliably blocks the optical axis 5c even in the middle part of the skewed part of the passenger conveyor. For example, even a person who falls over step 1 reliably blocks the optical axis 5c. As a result, the object 6 is reliably detected.

  According to Embodiment 1 demonstrated above, the some optical axis 5c inclines in the same direction with respect to the advancing direction of a passenger conveyor. For this reason, the number of photoelectric devices 5 can be reduced as compared with the case where the plurality of optical axes 5c are orthogonal to the traveling direction of the passenger conveyor.

  Moreover, the light projector 5a and the light receiver 5b are provided in the skirt guard 2a. For this reason, it can prevent that the light projector 5a and the light receiver 5b contact the object on the mobile body 1. FIG.

  In addition, as long as the some optical axis 5c inclines in the same direction with respect to the advancing direction of a passenger conveyor, you may replace the position of the light projector 5a, and the position of the light receiver 5b. Also in this case, the number of photoelectric devices 5 can be reduced as compared with the case where the plurality of optical axes 5c are orthogonal to the traveling direction of the passenger conveyor.

  If the optical axis 5c is formed between the projector 5a and the light receiver 5b, at least one of the light transmitting plate 4a and the light transmitting plate 4b may not be provided. At this time, an opening may be formed in the corresponding structural wall 2. For example, when the translucent plate 4 a is not provided, the projector 5 a projects light to the opening of the corresponding structural wall 2. For example, when the translucent plate 4 b is not provided, the light receiver 5 b receives light from the opening of the corresponding structural wall 2. Also in these cases, the number of photoelectric devices 5 can be reduced as compared with the case where the plurality of optical axes 5c are orthogonal to the traveling direction of the passenger conveyor.

  The moving body 1 may be an endless belt. Also in this case, the number of photoelectric devices 5 can be reduced as compared with the case where the plurality of optical axes 5c are orthogonal to the traveling direction of the passenger conveyor.

Embodiment 2. FIG.
FIG. 5 is a front view of an essential part of a passenger conveyor using an object detection device for a passenger conveyor according to Embodiment 2 of the present invention. In addition, the same code | symbol is attached | subjected to Embodiment 1 and an equivalent part, and description is abbreviate | omitted.

    The photoelectric device 5 of Embodiment 1 is provided on the skirt guard 2a. On the other hand, the photoelectric device 5 of Embodiment 2 is provided in the lower part of the balustrade 2b.

  According to the second embodiment described above, as in the first embodiment, the number of photoelectric devices 5 can be reduced as compared with the case where the plurality of optical axes 5c are orthogonal to the traveling direction of the passenger conveyor.

  One of the light projector 5a and the light receiver 5b may be provided on the skirt guard 2a, and the other of the light projector 5a and the light receiver 5b may be provided below the balustrade 2b. Also in this case, the number of photoelectric devices 5 can be reduced as compared with the case where the plurality of optical axes 5c are orthogonal to the traveling direction of the passenger conveyor.

Embodiment 3 FIG.
FIG. 6 is a plan view of the main part of a passenger conveyor using the passenger conveyor object detection device according to Embodiment 3 of the present invention. In addition, the same code | symbol is attached | subjected to Embodiment 1 and an equivalent part, and description is abbreviate | omitted.

  In Embodiment 1, translucent plates 4a and 4b are provided. On the other hand, in Embodiment 3, prisms 7a and 7b are provided.

  The light from the projector 5a is orthogonal to the incident surface of the prism 7a. In this case, the incident surface of the prism 7a does not refract the light. The prism 7a transmits the light. The exit surface of the prism 7a refracts the light. The light travels toward the prism 7b.

  When there is no object between the prism 7a and the prism 7b, the prism 7b receives the light. The incident surface of the prism 7b refracts the light. The prism 7b transmits the light. The light is orthogonal to the exit surface of the prism 7b. In this case, the exit surface of the prism 7b does not refract the light. The light travels toward the light receiver 5b. The light receiver 5b receives the light.

  According to the third embodiment described above, the incident surface of the prism 7a and the exit surface of the prism 7b do not refract light. For this reason, the angle θ of the optical axis 5c can be made smaller than when the translucent plates 4a and 4b are used. As a result, the number of photoelectric devices 5 can be reduced.

  In addition, you may apply the object detection apparatus of Embodiment 1- Embodiment 3 to the moving walkway.

  DESCRIPTION OF SYMBOLS 1 Mobile body, 2 Structure wall, 2a Skirt guard, 2b Railing, 3 Handrail, 4a, 4b Translucent plate, 5 Photoelectric device, 5a Light projector, 5b Light receiver, 5c Optical axis, 6 Object, 7a, 7b Prism

Claims (10)

Provided on the structural walls on both sides of the moving body of the passenger conveyor, aligned along the traveling direction of the moving body, forming an optical axis across the moving body, and in the same direction with respect to the traveling direction of the moving body A plurality of photoelectric devices with tilted optical axes;
An optical axis is provided in an end portion on the moving direction side of the moving body with respect to the plurality of photoelectric devices, and an optical axis is formed in a direction perpendicular to the moving direction of the moving body at a position overlapping the moving body on a horizontal projection plane . An end-side photoelectric device;
With
The photoelectric device is
A projector that projects light that forms the optical axis;
A receiver for receiving the light projected by the projector;
With
One of the adjacent projectors is provided on one of the structural walls,
The other of the adjacent projectors is provided on the other of the structural walls,
A receiver corresponding to one of the adjacent projectors is provided on the other of the structural walls,
The light receiver corresponding to the other of the adjacent projectors is an object detection device for a passenger conveyor provided on one of the structural walls.   2. The object detection device for a passenger conveyor according to claim 1, wherein the adjacent photoelectric devices are arranged at intervals set based on an inclination of the optical axis with respect to a traveling direction of the moving body and a diameter of a detection target.   The said light projector is provided inside the corresponding structural wall, The object detection apparatus of the passenger conveyor of Claim 1 or Claim 2 which projects light with respect to the opening part formed in the said structural wall.   3. The object detection device for a passenger conveyor according to claim 1, wherein the projector is provided inside the structural wall with respect to a light transmitting body provided on the corresponding structural wall. 4.   The said light projector is provided inside the said structural wall rather than the board provided as a translucent body in the corresponding structural wall, The object detection apparatus of the passenger conveyor of Claim 4 which casts light with respect to the said board .   5. The passenger conveyor object according to claim 4, wherein the projector is provided inside the structural wall rather than the prism provided as a translucent member on the corresponding structural wall, and projects light perpendicularly to the prism. Detection device.   The said light receiver is provided inside the corresponding structural wall, The object detection apparatus of the passenger conveyor as described in any one of Claims 1-6 which receives the light from the opening part formed in the said structural wall. .   The said light receiver is the object detection apparatus of the passenger conveyor as described in any one of Claims 1-6 provided in the inner side of the said structural wall rather than the translucent body provided in the corresponding structural wall.   The said light receiver is an object detection apparatus of the passenger conveyor of Claim 8 which is provided inside the said structural wall rather than the board provided as a translucent body in the corresponding structural wall, and receives the light from the said board.   9. The passenger conveyor according to claim 8, wherein the light receiver is provided inside the structural wall rather than the prism provided as a translucent member on the corresponding structural wall, and receives light traveling vertically from an emission surface of the prism. Object detection device.

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