JP2009249077A - Passenger conveyor device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a passenger conveyor device capable of preventing a shoe or the like of a passenger from being caught in a gap in advance, easily fitting a sensor and executing the maintenance. <P>SOLUTION: The passenger conveyor device comprises a footstep 2 for conveying a passenger, a movable handrail 3, a driving device 6, a skirt guard 5 which is located below a supporting part for supporting the movable handrail 2 and opposite to a side face of the footstep 2 with a space therebetween, a light emitting device 9 for emitting the light 14 and a light receiving device 10 for receiving the light 14, a detector 11, an alarm device 12, and an operation control device 13. The light emitting device 9 and the light receiving device 10 are provided on the same side face of the footstep side of the skirt guard 5, and arranged so that the light 14 travels through an entrance. The detector 11 detects an obstacle by the light receiving signal from the light receiving device 10. The alarm device 12 gives an alarm by the detection signal from the detector 11. The operation control device 13 controls the operation of the driving device 6 by the detection signal from the detector 11. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a passenger conveyor device that prevents a shoe of a passenger using a passenger conveyor from being caught in a gap between a step and a skirt guard.

  As shown in FIG. 1, the escalator 1 includes a step 2, a moving handrail 3, an inner side plate 4, a skirt guard 5 and a drive device 6 for driving the escalator 1. As shown in FIG. 2, a gap 7 of about several millimeters exists between the demarcation line 8 and the skirt guard 5 at the end of the step 2. Therefore, in the conventional escalator accident prevention apparatus, a phototube is attached inside the skirt guard of the escalator, and a light beam is emitted along the escalator. When the skirt guard hits the skirt guard and a deformation of deformation occurs, the photoelectric tube beam is shielded, thereby detecting an abnormality in the gap between the step (step) and the skirt guard (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 57-41878 (Figs. 1 and 2)

  In the conventional escalator accident prevention device, an abnormality is detected after a passenger's shoes, etc. contact the skirt guard. Since it depends on the shape and deflection displacement, there is a problem that it may not be possible to detect that a passenger's shoes or the like are caught in the gap. In addition, since the sensor is inside the skirt guard, there is a problem that it is difficult to align the light emitting / receiving module during sensor installation or maintenance.

  The present invention has been made to solve the above-described problems, and it is an object of the present invention to prevent a passenger's shoes or the like from being caught in a gap, and to obtain a passenger conveyor device in which sensor installation and maintenance are easy. And

  The passenger conveyor device according to the present invention supports a step for carrying and transporting passengers between entrances, a moving handrail that moves at the same speed as the step, a driving device that moves the step and the moving handrail, and a moving handrail. A skirt guard that is below the supporting portion and that faces the side of the step with a gap, a light emitting device that emits light, a light receiving device that receives the light, a detection device, a warning device, and an operation control device With. The light-emitting device and the light-receiving device are provided on the same side surface on the step side of the skirt guard, are arranged so that the light beam passes between the entrances and exits, and the detection device detects the light-shielding object based on the light-receiving signal from the light-receiving device. The warning device issues a warning by a detection signal from the detection device. The operation control device controls the operation of the drive device by a detection signal from the detection device.

  A light emitting device and a light receiving device are installed on the step side of the skirt guard so that the light beam passes between the entrances and exits, so that it is possible to detect when the passenger's shoes approach the skirt guard and to be caught in the gap. Can be prevented. In addition, inspection during installation and maintenance can be easily performed.

Embodiment 1 FIG.
FIG. 3 is an explanatory diagram of the escalator device according to Embodiment 1 for carrying out the present invention. There are escalators, moving walkways, etc. as passenger conveyors. Here, an escalator will be described as an example, but the present invention can also be applied to other passenger conveyors. In the figure, the escalator device includes a step 2, a moving handrail 3, an inner plate 4, a skirt guard 5, a driving device 6, a light emitting device 9, a light receiving device 10, a detecting device 11, a warning device 12, an operation control device 13, and a warning means. 15. This figure shows the rear handrail 3, the inner plate 4, and the guard guard 5 with respect to the step 2. However, since there is a handrail on the front side as well, the light emitting device is similarly applied to the skirt guard on the front side. And a light receiving device can be installed.

  The steps 2 are moved by the drive device 6 controlled by the operation control device 13 and carry passengers between the entrances and exits. The moving handrail 3 is also moved by the driving device 6 controlled by the operation control device 13 and moved at the same speed as the step 2. The inner plate 4 is disposed below the moving handrail 3 and constitutes a support portion that supports the moving handrail. The skirt guard 5 is a panel located under the inner plate 4 and facing the side surface of the step 2 with a slight gap 7.

  A light emitting device 9 and a light receiving device 10 are mounted on the same side surface of the skirt guard 5 on the step side. The light emitting device 9 disposed at one entrance is a device for emitting a light beam 14 and is configured to irradiate a light receiving device 10 disposed at the other entrance. As the light emitting device 9, for example, as shown in FIG. 4, a light emitting element 22 such as an LED (Light Emitting Diode) or an LD (Laser Diode), and a light projection for making the emitted light from the light emitting element 22 parallel light. The lens 23 is configured. For example, a plano-convex lens or a Fresnel lens can be used as the light projecting lens 23. The light receiving device 10 is provided at a position facing the light emitting device 9, receives the light beam 14 from the light emitting element 22, and converts the received light intensity into an electrical signal. As the light receiving device 10, for example, as shown in FIG. 5, a light receiving element 24 such as a PD (Photo Diode), a CCD (Charge Coupled Device) or a photomultiplier tube, and a light receiving lens 25 for condensing the light beam 14. It is composed of. As the light receiving lens 25, for example, a plano-convex lens or a Fresnel lens can be used.

  The detection device 11 determines the presence or absence of a light shielding object according to the intensity of the light reception signal from the light reception device 10. The warning device 12 operates according to a detection signal that is output when the detection device 11 detects a light blocking object, and issues a warning using the warning means 15. The warning means 15 is means for warning the passenger of danger, and for example, an audio announcement by a speaker, a warning light, or the like is used. The operation control device 13 controls the drive device 6 by a detection signal from the detection device 11 to decelerate the escalator 1 and perform an emergency stop.

  In the passenger conveyor device configured as described above, when the passenger's shoes or the like approach the skirt guard 5 and the light beam 14 emitted from the light emitting element 22 of the light emitting device 9 is blocked, the light receiving device 10 to the detecting device 11. When the intensity of the received light reception signal decreases and falls below a certain intensity, the detection device 11 determines that there is a light shielding object.

  The detection device 11 outputs a detection signal to the warning device 12, and the warning device 12 warns the passenger of the danger using the warning means 15. Alternatively, the detection device 11 outputs a detection signal to the operation control device 13, the operation control device 13 controls the drive device 6, and the step 2 and the moving handrail 3 are decelerated and urgently stopped. Alternatively, the detection device 11 outputs a detection signal to both the warning device 12 and the operation control device 13. In this case, the passenger is warned of the danger, and the step 2 and the moving handrail 3 are decelerated and stopped urgently.

  Alternatively, the detection device 11 first outputs a detection signal to the warning device 12, and outputs the detection signal to the operation control device 13 when the detection device 11 continues the determination of the presence of the light shielding object for a certain period of time. May be. In this case, a warning is issued first, the operation control device 13 operates after a predetermined time has elapsed, the step 2 and the moving handrail 3 are decelerated, and an emergency stop is performed.

  A plurality of sets of the light emitting device 9 and the light receiving device 10 may be installed at the entrance / exit by changing the height and position from the step. In this case, if there is a response to a sensor away from the step 2, a warning is given. Next, when there is a response to a sensor near the step, stop or control the deceleration first, and then control the stop when the detection of the shade is continued for a certain time or longer. good.

  Since the sensor is outside the skirt guard, it may be affected by ambient light such as a fluorescent lamp. In that case, a light emitting device and a light receiving device using infrared rays may be used. Further, the light beam may be emitted in a pulse shape and shifted from the emission frequency of the fluorescent lamp. Further, the field of view of the light receiving sensor may be limited so that the light from the light emitting device 9 is received so that it is not easily affected by disturbance light.

  According to the passenger conveyor device configured in this way, the light emitting device and the light receiving device are provided on the step side of the skirt guard 5 and are arranged so that the light beam passes between the entrances and exits. It is possible to detect a passenger's shoes or the like, and a passenger's shoes or the like are caught in the gap between the skirt guard 5 and the step 2 to prevent the passenger from falling or damaging his / her legs and fingers. Further, since the light emitting device 9 and the light receiving device 10 are provided on the outer side (step side) of the skirt guard 5, it is possible to easily perform inspection during installation and maintenance.

  In addition, if the operation control is performed after a certain time has elapsed since the warning is issued, the escalator stops after the passenger is alerted, so that erroneous stops can be reduced. In addition, when multiple sets of sensors are installed with different heights and positions, warnings and operation control can be performed according to the position of the shade, so the passengers can be alerted and the number of accidents caught in the gap is reduced. Increased safety. Furthermore, if it is made less susceptible to disturbance light due to infrared rays, pulses, and field-of-view restrictions, it is possible to prevent malfunction due to disturbance light caused by a fluorescent lamp or the like.

Embodiment 2. FIG.
In the first embodiment, the light emitting device 9 and the light receiving device 10 are arranged at the entrance / exit, but here, a plurality of sets arranged in series between the entrances / exits will be described. FIG. 6 is an explanatory diagram of an escalator device according to Embodiment 2 for carrying out the present invention. In the figure, the light emitting devices 9a, 9b and the light receiving devices 10a, 10b are provided on the same side surface on the step side of the skirt guard 5, and are arranged so that the light beam passes between the entrances and exits. The light emitting devices 9a and 9b emit light rays 14a and 14b, respectively, and irradiate the light receiving devices 10a and 10b, respectively. As the light emitting devices 9a and 9b and the light receiving devices 10a and 10b, those described in the first embodiment can be used.

  The detection device 11 determines the presence or absence of a light shielding object according to the intensity of the light reception signal from the light receiving devices 10a and 10b. The warning device 12 operates in accordance with a detection signal output when the detection device 11 detects a light shielding object. When the light shielding object exists within the range of the light beam 14a, the warning device 12 warns the passenger using the warning means 15a. When there is a light-shielding object within the range of 14b, the warning means 15b is used to warn the passenger. The operation control device 13 controls the drive device 6 by a detection signal from the detection device 11 to decelerate the escalator 1 and perform an emergency stop.

  FIG. 6 shows an example in which the shielding object detection range is two places, but the present invention can be applied to three or more places including a boarding / alighting part. Here, the area close to the entrance / exit at the both ends of the passenger conveyor is the entrance / exit, and as a guideline, for example, in the case of a general escalator, about 2.2 m is required before stopping. It is appropriate for the boarding / alighting section to be set in a range of about 3 m from the boarding gate to the step side. Since the distance to stop depends on the speed of the passenger conveyor, the range of the getting-on / off section may be changed as appropriate.

  Operation | movement of the detection apparatus 11 of the passenger conveyor apparatus comprised in this way is demonstrated along the flowchart of FIG. First, in step 100, the received light signal from the light receiving device is observed, and in step 110, it is determined whether the intensity is below a certain level. If the received light intensity is high, it is determined in step 111 that there is no light blocking object. If the intensity is below a certain level, it is determined that there is a light blocking object, and the process proceeds to step 120. Here, the number of shading detection areas is determined. If there are less than three light-shielding detection areas, the process proceeds to step 134, where a warning is issued using the warning means 15a or 15b in the corresponding area. If there are three or more shading detection areas, the process proceeds to step 121 to determine whether it is a boarding / alighting part. If it is not a boarding / exiting part (far from the boarding / exiting gate), the process proceeds to step 133 and a warning is given in the corresponding area. If it is a boarding / exiting part (close to the boarding / exiting gate), the process proceeds to step 130. Here, the process may proceed to step 132 to give a warning in the corresponding area, or may proceed to step 131 to perform the operation control or the operation control together with the warning in the corresponding area. As the operation control, there are deceleration and emergency stop of the step 2 and the moving handrail 3.

  If a warning is given in the corresponding area in steps 132 to 134, the warning time is counted in step 140. Next, in step 141, it is determined whether the warning is performed for a certain time or more. If the warning is performed for a certain time or more, operation control is performed in step 150. If the predetermined time has not been reached, the process returns to step 100 and the loop is repeated. Since the warning is given and the passenger notices and leaves the skirt guard 5, the received light intensity returns in step 110. In this case, the process proceeds to step 111, where it is determined that there is no light blocking object, and the warning is canceled.

  According to the passenger conveyor device configured as described above, since warning can be made for each place where the light shielding object is detected, it is possible to accurately alert the passenger. In addition, when three or more sets of sensors including the boarding / alighting part are arranged, it is possible to perform operations such as deceleration and emergency stop at the boarding / alighting part where accidents are likely to occur, and stop after warning at other positions, improving safety. To do.

Embodiment 3 FIG.
In the first and second embodiments, the light-emitting device and the light-receiving device are arranged at separate locations, but here, a method of installing them in close locations by using a reflector will be described. FIG. 8 is an explanatory diagram of an escalator apparatus according to Embodiment 3 for carrying out the present invention. In the figure, the light emitting devices 9a and 9b and the light receiving devices 10a and 10b are arranged on the same side of the skirt guard near the center of the escalator, and the reflectors 16a and 16b are arranged on the same side of the skirt guard at the entrance / exit. Is installed. Thereby, it arrange | positions so that a light beam may pass between entrances and exits. As the light emitting devices 9a and 9b and the light receiving devices 10a and 10b, those described in the first embodiment can be used.

  The light emitting devices 9a and 9b emit light rays 14a and 14b, respectively, which are folded back by the reflecting plates 16a and 16b and received by the light receiving devices 10a and 10b, respectively. These light emitting device and light receiving device may be arranged on the same side surface of the skirt guard 5 while changing the height from the step. For example, when the installation positions of the light emitting devices 9a and 9b are high and the installation positions of the light receiving devices 10a and 10b are close to the step 2, the forward light is on the upper side, and the return light is on the lower side and passes near the step 2. It becomes.

  In addition, in FIG. 8, although the specific example in which the light-shielding object detection range was two places was shown, it is applicable also to three or more places including a boarding / alighting part. About operation | movement of the detection apparatus 11 of the passenger conveyor apparatus comprised in this way, it is the same as that of Embodiment 2. FIG.

  According to the passenger conveyor device configured in this way, the area that can be sensed is expanded because of the use of reciprocating light, and safety is increased. Further, when a thin reflector is used, space saving is possible.

Embodiment 4 FIG.
In the second and third embodiments, the location of the light shielding object is detected by installing a plurality of sets of light emitting devices and light receiving devices. Here, the distance measurement is performed together with the light emitting device 9 and the light receiving device 10 of the first embodiment. A method for detecting the location of the light shielding object using the apparatus will be described. FIG. 9 is an explanatory diagram of an escalator device according to Embodiment 4 for carrying out the present invention. In the figure, distance measuring devices 17a and 17b are installed in the vicinity of the entrance and exit, measure the distance to the light shields 18a and 18b that shield the light beam 14a between the entrance and exit by a passenger's shoes and the like, and include distance information. The signal is output to the detection device 11.

  Examples of the distance measuring devices 17a and 17b include a device that measures a distance using reflected light from a light shielding object such as a triangulation method or a TOF (Time of Flight) method. In the triangulation method, as shown in FIG. 10, the irradiation light 26 that has passed through the light projecting lens 23 from the light emitting element 22 hits the light blocking object 18, and the reflected light 27 enters the light receiving element 24 through the light receiving lens 25. It measures the distance from. For example, PSD (Position Sensitive Detector) is used as the light receiving element. Further, in the TOF method, as shown in FIG. 11, the pulsed irradiation light 26 is emitted from the transmitter 28, and the reflected light 27 that hits the light shielding object 18 returns to the receiver 29. The time τ with the received signal 31 is measured, and the distance is calculated.

  The detection device 11 determines the presence / absence of a light shielding object according to the intensity of the light reception signal from the light receiving device 10 and determines the distance from the entrance / exit to the light shielding object by a signal including distance information from the distance measurement devices 17a and 17b. It is also determined whether it is within a certain distance (getting on / off part).

  The warning device 12 operates according to a detection signal output when the detection device 11 detects a light shielding object. As shown in FIG. 9, when the light shielding object exists within the range of the light beam 14a, the warning device 15a is used. A warning is given to the passenger, and when a light-shielding object is present at the boarding / alighting part, the warning means 15b and 15c are used to warn the passenger. The operation control device 13 controls the drive device 6 by a detection signal from the detection device 11 to decelerate the escalator 1 and perform an emergency stop.

  Operation | movement of the detection apparatus 11 of the passenger conveyor apparatus comprised in this way is demonstrated along the flowchart of FIG. First, in step 101, the output signals from the light receiving device and the distance measuring device are viewed, and in step 102, the signals from the distance measuring devices 17a and 17b are determined. If there is a signal, the process proceeds to step 122. If there is no signal at the center of the escalator 1 or the like because it is outside the detection area of the distance measuring devices 17a, 17b (intermediate part of the escalator 1), the process proceeds to step 110.

  In step 110, it is determined whether the light receiving device is below a certain intensity. If the received light intensity is high, it is determined in step 111 that there is no light blocking object. If the intensity is below a certain level, it is determined that there is a light-shielding object, and the process proceeds to step 135, where a warning is given in the corresponding area using warning means, for example, 15a.

  In step 122, it is determined whether or not the distance measuring devices 17a and 17b have detected a light-shielding object having a distance equal to or less than a certain distance (getting-on / off part). When the distance is long, the process proceeds to step 133 and a warning is given in the corresponding area. When the distance is close (getting on / off section), the process proceeds to step 130. Here, the process proceeds to step 132, where warning may be performed using the warning means, for example, 15b, 15c, in the corresponding area, or the process proceeds to step 131, where operation control or operation control is performed together with a warning in the corresponding area. May be performed. As the operation control, there are deceleration and emergency stop of the step 2 and the moving handrail 3.

  If a warning is given in the corresponding area in steps 132, 133, 135, the warning time is counted in step 140. Next, in step 141, it is determined whether the warning is performed for a certain time or more. If the warning is performed for a certain time or more, operation control is performed in step 150. If the predetermined time has not been reached, the process returns to step 101 and the loop is repeated. In addition, since a warning is given, when the passenger notices and leaves the skirt guard 5, there is no signal from the distance measuring device, and since the received light intensity returns in step 110, the process proceeds to step 111, and it is determined that there is no light shielding object. Release the warning.

  According to the passenger conveyor device configured as described above, since the light shield is an intermediate part of the escalator, the light receiving device detects the presence or absence of the light shield when it is outside the detection area of the distance measuring device. The location of the shade can be detected by the measuring device. For this reason, it is possible to perform an operation such as giving a warning corresponding to the detected place, decelerating near the boarding / exiting portion, emergency stop, and warning at other positions, thereby improving safety. In addition, since the distance setting from the entrance / exit when performing warning or operation control can be easily changed, the distance can be changed to an optimum distance according to the speed, installation environment, and usage status of the escalator. Therefore, convenience is improved.

Embodiment 5 FIG.
In the fourth embodiment, the distance measurement device using the reflected light from the light shielding object is used to measure the distance to the light shielding object, but here, the distance measurement using two sets of optical paths that reciprocate in opposite directions. Is described. FIG. 13 is an explanatory diagram of an escalator apparatus according to Embodiment 5 for carrying out the present invention. In the figure, the escalator device includes light emitting devices 9a to 9d, light receiving devices 10a to 10d, and light beam guiding means 19a and 19b.

  A light beam 14b from the light emitting device 9b disposed at the entrance / exit of the upper floor is received by the light receiving device 10b disposed at the entrance / exit of the lower floor, and the light emitting device 9d emits light in conjunction with the light receiving device 10b. Is received by the light receiving device 10d by a light guide means 19a such as an optical fiber, and forms a counterclockwise round-trip optical path. A light beam from the light emitting device 9c on the upper floor is received by the light receiving device 10c on the lower floor by the light wave guiding means 19b, and a light beam 14a from the light emitting device 9a that emits light in conjunction with the light receiving device 10c is obtained. Light is received by the light receiving device 10a and forms a reciprocal optical path in the opposite direction (clockwise).

  The light guides 19b and 19a are means for propagating the light emitted by the light emitting devices 9c and 9d to the light receiving devices 10c and 10d, respectively. For example, an optical fiber or the like can be used, and it is desirable that the lengths are the same. When the light beams 14a and 14b are blocked, the detection device 11 determines the presence or absence of the light shielding object based on the light reception signals from the light receiving devices 10a and 10d, and specifies the position of the light shielding object. The warning device 12 operates according to a detection signal that is output when the detection device 11 detects a light-shielding object, and warns the passenger using the warning means 15 that is closest to the location specified by the detection device 11. The operation control device 13 controls the drive device 6 by a detection signal from the detection device 11 to decelerate the escalator 1 and perform an emergency stop.

  The distance calculation method of the detection apparatus 11 of the passenger conveyor apparatus comprised in this way is demonstrated using FIG. This figure shows the output 20 from the light receiving device and the signal 21 of the detecting device. It is assumed that the light rays 14a and 14b emitted from the light emitting devices 9a and 9b are simultaneously blocked by the light shielding member 18 when a passenger's shoes or the like approaches the skirt guard 5. Assume that the total length of the passenger conveyor is L, and there is a light shielding object 18 at a distance of La from the entrance / exit on the lower floor and Lb from the entrance / exit on the upper floor.

L = La + Lb (1)

  When the light ray is blocked, the last counterclockwise light reaches the light receiving device 10d through a distance La + L, and the last right light reaches the light receiving device 10a through a distance Lb. If the speed of light is c and the refractive index of the light guide means is n, the speed of the light is reduced by the refractive index in the light guide means, so the last counterclockwise light is a light receiving device after a time of (La + nL) / c. 10d and the last clockwise light reaches the light receiving device 10a after Lb / c. Therefore, if the difference between the time when the clockwise and counterclockwise light reaches the light receiving device is ΔT, the equation (2) is obtained.

(La−Lb + nL) / c = ΔT (2)

  Equations (3) and (4) are derived from Equations (1) and (2), and the position of the light shielding object can be specified.

La = {(1-n) L + c · ΔT} / 2 (3)
Lb = {(1 + n) L−c · ΔT} / 2 (4)

  Therefore, if a fixed distance from the entrance / exit is A, the operation control is performed together with the operation control or the warning when the expression (5) is satisfied.

La ≦ A or Lb ≦ A (5)

  Since this method can grasp the position of the light shielding object over the entire length of the escalator 1, if a plurality of warning means are installed, a warning can be issued from the closest warning means corresponding to the position of the light shielding object.

  In order to measure the position by the above method, the light beams 14a and 14b need to be interrupted almost simultaneously. However, if these light beams are separated, accurate position measurement becomes difficult. Therefore, for example, using semiconductor technology and micromachine technology, the light emitting element 9b and the light receiving element 10a are formed adjacent to each other on the same substrate, covered with a microlens, and installed at one entrance / exit, and similarly at the other entrance / exit The same light emitting element 9a and light receiving element 10b may be provided. As a result, the light beams of the sensors installed at the entrance / exit can be made substantially the same.

  The above method uses a counterclockwise round-trip optical path from the light-emitting device 9b installed on the upper floor and a clockwise round-trip optical path from the light-emitting apparatus 9c installed on the upper floor. The detecting device 11 calculates the distance from the light receiving signals of the light receiving devices 10d and 10a installed close to the upper floor. However, it may be emitted from another floor and received by another floor.

  In this case, the light-emitting device 9b installed on the upper floor → the light beam 14b → the light-receiving device 10b → the light-emitting device 9d → the light waveguide means 19a → the light-receiving device 10d, The detection device 11 is installed on another floor using a clockwise and reciprocating optical path of the light emitting device 9a → the light beam 14a → the light receiving device 10a → the light emitting device 9c → the light beam guiding means 19b → the light receiving device 10c. The distance is calculated from the light reception signals of the light receiving devices 10d and 10c.

  The distance calculation method of the detection apparatus 11 in this case is demonstrated using FIG. The last counterclockwise light reaches the light receiving device 10d through a distance of La + L, and the last clockwise light reaches the light receiving device 10c through a distance of Lb + L. Therefore, the last counterclockwise light reaches the light receiving device 10d after the time (La + nL) / c, and the last right light reaches the light receiving device 10a after the time (Lb + nL) / c. Therefore, if the difference between the time in which the clockwise and counterclockwise light reaches the light receiving device is ΔT, the equation (6) is obtained. From the equations (1) and (6), the distance from the entrance / exit to the light shielding object Can be calculated.

| La−Lb | / c = ΔT (6)
| La−Lb | = c · ΔT ≧ B (7)

  As shown in the equation (7), when the value B is equal to or greater than a certain value B, the shade is close to the entrance / exit (the entrance / exit part). In this case, the operation control may be performed together with the operation control or warning. good. However, in this method, since the light receiving devices 10c and 10d are divided into upper and lower floors, when the distance between the detecting device 11 and each of the light receiving devices 10c and 10d is different, detection from each of the light receiving devices 10c and 10d is performed. Since a time difference occurs in the signal, it is necessary to measure and calibrate the time difference in advance.

  According to the passenger conveyor device configured as described above, the position of the light shielding object can be grasped, so that warning is given from the nearest warning means corresponding to the detected place, or deceleration or emergency is performed near the entrance / exit. It is possible to stop and warn at other positions. Therefore, it is possible to accurately alert the passenger, and safety is improved. In addition, since the reflected light from the light shield is not used, the SN ratio is good. Therefore, the light shielding object can be detected with high sensitivity.

It is a perspective view which shows the conventional escalator. It is a top view which shows the conventional escalator. It is explanatory drawing of the escalator apparatus which shows Embodiment 1 of this invention. It is a block diagram of the light-emitting device of the escalator apparatus which shows Embodiment 1 of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram of the light-receiving device of the escalator apparatus which shows Embodiment 1 of this invention. It is explanatory drawing of the escalator apparatus which shows Embodiment 2 of this invention. It is a flowchart which shows operation | movement of the escalator apparatus which shows Embodiment 2 of this invention. It is explanatory drawing of the escalator apparatus which shows Embodiment 3 of this invention. It is explanatory drawing of the escalator apparatus which shows Embodiment 4 of this invention. It is explanatory drawing of the triangulation method of the escalator apparatus which shows Embodiment 4 of this invention. It is explanatory drawing of the TOF method of the escalator apparatus which shows Embodiment 4 of this invention. It is a flowchart which shows operation | movement of the escalator apparatus which shows Embodiment 4 of this invention. It is explanatory drawing of the escalator apparatus which shows Embodiment 5 of this invention. It is explanatory drawing which shows the principle of the escalator apparatus which shows Embodiment 5 of this invention. It is explanatory drawing which shows the principle of the escalator apparatus which shows Embodiment 5 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Escalator 2 Step 3 Moving handrail 4 Inner plate 5 Skirt guard 6 Drive device 7 Gap 8 Demarcation line 9, 9a, 9b, 9c, 9d Light emitting device 10, 10a, 10b, 10c, 10d Light receiving device 11 Detection device 12 Warning device 13 Operation control device 14, 14a, 14b, 14c Light beam 15, 15a, 15b, 15c Warning means 16a, 16b Reflector 17a, 17b Distance measuring device 18, 18a, 18b Light shield 19a, 19b Light guide device 20 From light receiving device Output signal 21 detector signal 22 light emitting element 23 light projecting lens 24 light receiving element 25 light receiving lens 26 irradiation light 27 reflected light 28 transmitter 29 receiver 30 transmission signal 31 reception signal

Claims (11)

Steps for carrying passengers between the entrances and exits,
A moving handrail that moves at the same speed as the steps;
A driving device for moving the steps and the movable handrail;
A skirt guard at a lower part of a support part for supporting the moving handrail, and facing the side surface of the step with a gap;
A light emitting device for emitting the light beam and a light receiving device for receiving the light beam, which are provided on the same side surface of the step side of the skirt guard and arranged so that the light beam crosses between the entrances and exits;
A detection device for detecting a light blocking object by a light reception signal from the light receiving device;
A warning device for giving a warning by a detection signal from the detection device;
A passenger conveyor device comprising: an operation control device that controls operation of the drive device according to a detection signal from the detection device. The passenger conveyor device according to claim 1, wherein a plurality of sets of the light emitting device and the light receiving device are provided in parallel at the entrance and exit at different heights and positions from the step. Three or more sets of light-emitting devices and light-receiving devices are provided in series between the entrances and exits, and two of them are arranged at the getting-on / off portions at both ends of the passenger conveyor,
The passenger conveyor device according to claim 1, wherein the detection device detects a light shielding object at the getting-on / off portion based on a light reception signal from a light-receiving device at the getting-on / off portion. A distance measuring device for measuring the distance to the light shielding object by reflected light from the light shielding object is further provided at the entrance / exit,
The passenger conveyor device according to claim 1, wherein the detection device detects a light shielding object at a boarding / alighting portion based on distance information from the distance measurement device. The light emitting device and light receiving device
A first light emitting device provided at one entrance and exit, a first light receiving device provided at the other entrance and receiving light from the first light emitting device, and a first light receiving device in proximity to the first light receiving device. A second light-emitting device that emits light in conjunction with the light-emitting device, a first light-wave guiding means that transmits a light beam from the second light-emitting device, and the first light-wave guiding device that is adjacent to the first light-emitting device. A first optical path that reciprocates the entrance and exit comprising a second light receiving device that receives light from the means;
A third light emitting device proximate to the first light emitting device; a second light guide means for transmitting light from the third light emitting device; and the second light beam proximate to the first light receiving device. A third light-receiving device that receives light from the waveguide means; a fourth light-emitting device that is provided adjacent to the first light-receiving device and emits light in conjunction with the third light-receiving device; A second optical path comprising a fourth light receiving device provided adjacent to the light emitting device for receiving the light beam from the fourth light emitting device,
2. The passenger conveyor device according to claim 1, wherein the detection device calculates a distance to the light shielding object based on a light reception signal from the second light receiving device and the fourth light receiving device, and detects the light shielding object at a boarding / exiting portion. The passenger conveyor device according to claim 1, wherein the light emitting device emits at least one of infrared rays and pulsed light rays. The passenger conveyor device according to claim 1, wherein the light receiving device receives a light from the light emitting device by limiting a field of view of the light receiving portion. A reflection plate that reflects the light from the light emitting device is further provided on the same side of the skirt guard on the step side,
The passenger conveyor device according to claim 1, wherein the light receiving device receives the light beam from the reflecting plate. The passenger conveyor device according to any one of claims 1 to 5, wherein the operation control means controls the operation of the driving device based on a detection signal output when the detection device continues detection of the light blocking object for a predetermined time or more. The passenger conveyor device according to any one of claims 3 to 5, wherein the operation control means controls the operation of the drive device based on a detection signal output when the detection device detects a light blocking object at the boarding / exiting portion. The passenger conveyor device according to any one of claims 3 to 5, wherein the warning device issues a warning corresponding to a place where the detection device detects the light shielding object.

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